CN115459248B - Power distribution circuit, power distribution method and electric equipment - Google Patents
Power distribution circuit, power distribution method and electric equipment Download PDFInfo
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- CN115459248B CN115459248B CN202211104742.XA CN202211104742A CN115459248B CN 115459248 B CN115459248 B CN 115459248B CN 202211104742 A CN202211104742 A CN 202211104742A CN 115459248 B CN115459248 B CN 115459248B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000011664 signaling Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 11
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- 238000010586 diagram Methods 0.000 description 5
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
- H02J3/00125—Transmission line or load transient problems, e.g. overvoltage, resonance or self-excitation of inductive loads
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- Engineering & Computer Science (AREA)
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Abstract
The embodiment of the application provides a power distribution circuit, a power distribution method and electric equipment, wherein the circuit comprises: a power supply module; the first power supply module is connected with the power distribution module to form a first power supply network together with the power distribution module; the second power supply module is connected with the power distribution module to form a second power supply network together with the power distribution module; the power distribution module comprises a plurality of load interfaces, wherein each load interface is connected with a first power supply network and/or a second power supply network; the first switch module is arranged between the load interface and the appointed power supply network and used for controlling the connection or disconnection of a passage between the load interface and the appointed power supply network, and the appointed power supply network is the first power supply network or the second power supply network. According to the power distribution circuit, independent isolation of a failed load can be achieved, the appointed power supply network can supply power for other loads connected with the appointed power supply network, and power supply efficiency of the power distribution circuit is improved.
Description
Technical Field
The present application relates to the field of power distribution technology, and more particularly, to a power distribution circuit, a power distribution method, and electric equipment.
Background
Currently, there is a need for redundant power supply to electric devices, and in order to solve the above need, technicians design and use a dual-grid power supply mode for the electric devices.
In the dual-power-grid power supply mode, the user equipment comprises a main power grid and a secondary power grid, and an isolator is arranged between the main power grid and the secondary power grid so as to avoid mutual influence between the main power grid and the secondary power grid. When a power supply module in a certain power grid or a load connected to the power grid fails, the power grid usually stops supplying power to avoid burning out the load or the power supply module.
However, when a load connected to the power grid fails, the power grid may stop supplying power, and at this time, the power grid cannot supply power to other loads connected thereto, resulting in low power supply efficiency.
Disclosure of Invention
The embodiment of the application provides a power distribution circuit, a power distribution method and electric equipment.
In a first aspect, embodiments of the present application provide a power distribution circuit including a power distribution module; the first power supply module is connected with the power distribution module to form a first power supply network together with the power distribution module; the second power supply module is connected with the power distribution module to form a second power supply network together with the power distribution module; the power distribution module comprises a plurality of load interfaces, and each load interface is connected with the first power supply network and/or the second power supply network; the first switch module is arranged between the load interface and the appointed power supply network and used for controlling the connection or disconnection of a passage between the load interface and the appointed power supply network, and the appointed power supply network is the first power supply network or the second power supply network.
In a second aspect, embodiments of the present application provide a power distribution method applied to the power distribution circuit according to the first aspect, and in which at least one load interface is connected to a load, the method including: acquiring a target current, wherein the target current refers to a current flowing through a target load; generating a first control signal for a designated switch module according to a target current, wherein the designated switch module is a first switch module arranged between a target load interface and a designated power supply network, the target load interface is connected with a target load, and the designated power supply network is a first power supply network or a second power supply network; the first switch module is controlled to be closed or opened according to the first control signal.
In a third aspect, embodiments of the present application provide a powered device comprising a plurality of loads, and a power distribution circuit as described in the first aspect, and the plurality of loads being connectable with a plurality of load interfaces.
The embodiment of the application provides a power distribution circuit, a power distribution method and electric equipment, wherein a first switch module is arranged between a load interface and a specified power supply network and is used for controlling the connection or disconnection of a passage between the specified power supply network and the load interface, when a load connected with the load interface breaks down, the first switch module is opened, so that the passage between the specified power supply network and the load interface is controlled to be disconnected, the independent isolation of the broken load is realized, the specified power supply network can also supply power for other loads connected with the specified power supply network at the moment, and the power supply efficiency of the power distribution circuit is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a power distribution circuit provided in one embodiment of the present application.
Fig. 2 is a block diagram of a power distribution circuit provided in one embodiment of the present application.
Fig. 3 is a flow chart of a power distribution method provided in one embodiment of the present application.
Fig. 4 is a flow chart of a power distribution method provided in another embodiment of the present application.
Fig. 5 is a flow chart of a power distribution method provided in another embodiment of the present application.
Fig. 6 is a block diagram of a powered device according to one embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In order to better understand the solution of the present application, the following description will make clear and complete descriptions of the technical solution of the embodiment of the present application with reference to the accompanying drawings in the embodiment of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Based on the above-mentioned problem, the embodiment of the application provides a power distribution circuit, set up first switch module between load interface and appointed power supply network, first switch module is used for controlling the switch-on or disconnection of the passageway between appointed power supply network and this load interface, when the load that load interface connected breaks down, first switch module opens, so that control the passageway disconnection between appointed power supply network and the load interface, realize the individual isolation to the load that breaks down, appointed power supply network can also supply power for other loads that it connects at this moment, improve the power supply efficiency of power distribution circuit.
Referring to fig. 1, which illustrates a block diagram of a power distribution circuit 100 according to an embodiment of the present application, the circuit 100 includes: a first power supply module 110, a power distribution module 120, a second power supply module 130, a load interface 140, and a first switch module 150.
The first power supply module 110 is connected to the power distribution module 120 to form a first power supply network 11 together with the power distribution module. The first power supply module 110 is configured to supply power to a load connected to the first power supply network 11. Optionally, the first power supply module 110 may also supply power to the power distribution module 120.
The second power supply module 130 is connected to the power distribution module 120 to form the second power supply network 12 together with the power distribution module. The second power supply module 130 is configured to supply power to a load connected to the second power supply network 12. Optionally, the second power module 130 may also power the power distribution module 120.
The power distribution module 120 is configured to distribute the electrical energy of the first power supply module 110 and/or the second power supply module 130. The power distribution module 120 includes a plurality of load interfaces 140, and the plurality of load interfaces 140 are connected to the first power supply network 11 and/or the second power supply network 12 for connecting a plurality of loads, so that the power distribution module 120 can distribute power to the plurality of loads. One end of the load interface 140 is used to connect a load, and the other end is connected to the first power supply module 110 and/or the second power supply module 130. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 1 does not limit the present application.
The first switch module 150 is disposed between the load interfaces 140 and a designated power supply network, and is configured to control on or off of paths between the load interfaces 140 and the designated power supply network, where the designated power supply network is the first power supply network 11 or the second power supply network 12. One end of the first switch module 150 is connected to the first load interface 141, and the other end is connected to the first power supply module 110, and/or the second power supply module 130. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 1 does not limit the present application. When the first switch module 150 is closed, the path between the load interface 140 and the designated power supply network is conductive; when the first switch module 150 is open, the path between the load interface 140 and the designated power supply network is broken.
In this embodiment of the present application, the power distribution module 120 may control the first switch module 150 to be turned on or turned off according to the power supply requirement and the power supply parameter of the load, for example, when the current flowing through the load is too large, the first switch module 150 is controlled to be turned on to cut off the connection between the designated power supply network and the load, so as to improve the power supply safety by cutting off the connection between the designated power supply network and the load on the one hand, avoid irreversible damage to the power supply module or the load, and on the other hand, the designated power supply network may further supply power to other loads, so as to improve the power supply efficiency of the power distribution circuit.
The number of the first switch modules 150 is actually determined according to the number of the load interfaces 140, and specifically, the number of the first switch modules 150 is the same as the number of the load interfaces 140, that is, the first switch modules 150 are disposed on paths between each load interface 140 and a specified power supply network.
In summary, in the power distribution circuit provided by the embodiment of the present application, the first switch module is disposed between the load interface and the specified power supply network, and the first switch module is configured to control the connection or disconnection of the path between the specified power supply network and the load interface, and when the load connected to the load interface fails, the first switch module is opened, so as to control the disconnection of the path between the specified power supply network and the load interface, to achieve independent isolation of the failed load, and at this time, the specified power supply network can also supply power to other loads connected to the specified power supply network, thereby improving the power supply efficiency of the power distribution circuit.
Referring to fig. 2, which illustrates a block diagram of a power distribution circuit 100 according to an embodiment of the present application, the circuit 100 includes: the power supply system comprises a first power supply module 110, a power distribution module 120, a second power supply module 130, a load interface and a first switch module.
Unlike the fig. 1 embodiment, in the fig. 2 embodiment, the load interfaces include a first load interface 141 and a second load interface 142.
The first load interface 141 is used to connect a first load. The first load interface 141 is connected to both the first supply network 11 and the second supply network 12, i.e. both supply networks can supply power to a first load to which the first load interface 141 is connected. One end of the first load interface 141 is used for connecting a first load, and the other end is connected with the first power supply module 110 and the second power supply module 130 respectively. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application.
The consumer, which is provided with the power distribution circuit 100, may determine the first load connected to the first load interface 141 according to the safety performance requirements, importance level, priority requirements of the load. Taking an autopilot scenario as an example, the vehicle may determine a load, such as a motor control system, a brake control system, an anti-lock system, etc., which is related to the safety of autopilot, as a first load, and connect to the first load interface 141 to meet the redundant power supply requirement of the load, and even if one power supply network fails, the vehicle may supply power to the load through another power supply network, so as to ensure the normal operation of the load.
The second load interface 142 is used to connect a second load. The second load interface 142 is connected to the first power supply network 11 or the second load interface 142 is connected to the second power supply network 12. I.e. only one of the two supply networks supplies a second load to which the second load interface 142 is connected. One end of the second load interface 142 is used to connect to the second load, and the other end is connected to the first power supply module 110 or the second power supply module 130. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application.
The powered device may determine the second load coupled to the second load interface 142 based on the security performance requirements, importance, and priority requirements of the load. Taking the autopilot scenario as an example, the vehicle may determine a load of a light system, a sound system, or the like, which is related to weak safety of autopilot, as the second load, and connect to the second load interface 142.
In the embodiment of the present application, the first switch module includes a first switch sub-module 151 and a second switch sub-module 152.
The first switch sub-module 151 is disposed between the first load interface 141 and the first power supply network 11, and is configured to control on or off of a path between the first load interface 141 and the first power supply network 11. One end of the first switch sub-module 151 is connected to the first load interface 141, and the other end is connected to the first power supply module 110. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the first switch sub-module 151 is closed, the path between the first load interface 141 and the first power supply network 11 is conductive; when the first switch sub-module 151 is open, the path between the first load interface 141 and the first power supply network 11 is disconnected. In the embodiment of the present application, the first switch sub-module 151 is closed in case the first power supply network 11 supplies power to the first load connected to the first load interface 141.
In this embodiment of the present application, the first switch sub-module 151 may be a first intelligent fuse encapsulated with a first switching element, where the first intelligent fuse may implement a current detection function and a current reporting function, and may also implement a state control function for the first switching element in the first intelligent fuse, for example, controlling the first switching element to switch from a closed state to an open state according to an open control signal, or controlling the first switching element to switch from the open state to the closed state according to the close control signal. The first switching element may be a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), hereinafter referred to as MOS transistor, or may be a triode, a thyristor, a relay, or the like. The MOS tube can be an N-type MOS tube or a P-type MOS tube. In fig. 2, the first switch sub-module 151 includes a third switch S3, a fifth switch S5.
The second switch sub-module 152 is disposed between the first load interface 141 and the second power supply network 12, and is configured to control on or off of a path between the first load interface 141 and the second power supply network 12. One end of the second switch sub-module 152 is connected to the first load interface 141, and the other end is connected to the second power supply module 130. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the second switch sub-module 152 is closed, the path between the first load interface 141 and the second power supply network 12 is conductive; when the second switch sub-module 152 is open, the path between the first load interface 141 and the second power supply network 12 is disconnected. In the present embodiment, the second switch sub-module 152 is closed in case the second power supply network 12 supplies power to the first load connected to the first load interface 141.
In this embodiment of the present application, the second switch sub-module 152 may be a second intelligent fuse encapsulated with a second switching element, where the second intelligent fuse can implement a current detection function and a current reporting function, and may also implement a state control function for the second switching element inside the second intelligent fuse, for example, controlling the first switching element to switch from a closed state to an open state according to an open control signal, or controlling the first switching element to switch from an open state to a closed state according to a close control signal. The second switching element may be a MOS transistor, or may be a triode, a thyristor, a relay, or the like. The MOS tube can be an N-type MOS tube or a P-type MOS tube. In fig. 2, the second switch sub-module 152 includes a fourth switch S4 and a sixth switch S6.
Note that, when the first switch sub-module 151 is closed, the second switch sub-module 152 is opened. Conversely, with the first switch sub-module 151 open, the second switch sub-module 152 is closed. That is, there is typically only one of the first switch sub-module 151 and the second switch sub-module 152 in a closed state. Through the mode, the problems of electric quantity waste, potential safety hazards and the like caused by the fact that two power supply networks supply power to the first load simultaneously can be avoided, the power supply safety is improved, and the electric quantity is saved.
In the embodiment of the present application, the first switch module further includes a seventh switch sub-module 153. The seventh switching sub-module 153 is disposed between the second load interface 142 and the first power supply network 11, and is configured to control on or off of a path between the second load interface 142 and the first power supply network 11. Alternatively, the seventh switching sub-module 153 is disposed between the second load interface 142 and the second power supply network 12, and is configured to control on or off of a path between the second load interface 142 and the second power supply network 12. One end of the seventh switch sub-module 153 is connected to the second load interface 142, and the other end is connected to the first power supply module 110. Alternatively, one end of the seventh switch sub-module 153 is connected to the second load interface 142, and the other end is connected to the second power supply module 130. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. In the case where the seventh switch sub-module 153 is provided in the second load interface 142 and the first power supply network 11, if the seventh switch sub-module 153 is closed, a path between the second load interface 142 and the first power supply network 11 is turned on; if the seventh switch sub-module 153 is opened, the path between the second load interface 142 and the first power supply network 11 is disconnected. In the case where the seventh switch sub-module 153 is provided between the second load interface 142 and the second power supply network 12, if the seventh switch sub-module 153 is closed, a path between the second load interface 142 and the second power supply network 12 is turned on; if the seventh switch sub-module 153 is open, the path between the second load interface 142 and the second power supply network 12 is disconnected.
In this embodiment of the present application, the seventh switch submodule 153 may be a seventh intelligent fuse encapsulated with a seventh switch element, where the seventh intelligent fuse may implement a current detection function and a current reporting function, and may also implement a state control function for the seventh switch element inside the seventh intelligent fuse, for example, controlling the seventh switch element to switch from a closed state to an open state according to an open control signal, or controlling the seventh switch element to switch from an open state to a closed state according to a close control signal. The seventh switching element may be a MOS transistor, a triode, a thyristor, a relay, or the like. The MOS tube can be an N-type MOS tube or a P-type MOS tube. In fig. 2, the seventh switch sub-module 153 includes a first switch S1 and a second switch S2.
Unlike the embodiment of fig. 1, the circuit 100 further comprises a second switching module 210. The second switch module 210 is disposed between the first power supply module 110 and the power distribution module 120, and is used to control the connection or disconnection of the path between the first power supply module 110 and the power distribution module 120. One end of the second switch module 210 is connected to the first power supply module 110, and the other end is connected to the first switch module 150. Specifically, the other end of the second switching module 210 is connected to the first switching sub-module 151 and the seventh switching sub-module 153. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the second switch module 210 is closed, the path between the first power supply module 110 and the power distribution module 120 is conductive; when the second switch module 210 is opened, the path between the first power supply module 110 and the power distribution module 120 is opened. In this embodiment, the power distribution module 120 may control the second switch module 210 to be closed or opened according to the state of the first power supply module 110, for example, when the voltage at the output end of the first power supply module 210 is too large, the second switch module 210 is controlled to be opened so as to cut off the connection between the first power supply module 110 and the power distribution module 120, thereby improving the power supply safety and avoiding irreversible damage to the first power supply module 110 or the load.
In the embodiment of the present application, the first power supply module 110 includes a first dc converter 111 and a first battery 112. The first dc converter 111 and the first battery 112 are connected to both ends of the power distribution module 120, respectively. That is, the first dc converter 111 is connected to one end of the power distribution module 120, and the first battery 112 is connected to the other end of the power distribution module 120. The first dc converter 111 and the first battery 112 may alternatively be power sources in the first power supply network 11.
In the embodiment of the present application, the second switch module 210 includes a third switch sub-module 211 and a fourth switch sub-module 212.
The third switch sub-module 211 is disposed between the first dc converter 111 and the power distribution module 120, and is used to control on or off of a path between the first dc converter 111 and the power distribution module 120. One end of the third switch sub-module 211 is connected to the first dc converter 111, and the other end is connected to the first switch module 150. The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the third switch sub-module 211 is closed, the path between the first dc converter 111 and the power distribution module 120 is conductive; when the third switch sub-module 211 is open, the path between the first dc converter 111 and the distribution module 120 is open. In this embodiment, the power distribution module 120 may control the second switch module 210 to be turned on or turned off according to the state of the first dc converter 111, for example, when the voltage at the output end of the first dc converter 111 is too large, the third switch sub-module 211 is controlled to be turned on, so as to cut off the connection between the first dc converter 111 and the power distribution module 120, to improve the power supply safety, and avoid causing irreversible damage to the first dc converter 111 or the load.
The third switch sub-module 211 may be a third intelligent fuse packaged with a third switching element, where the third intelligent fuse may implement a voltage detection function and a voltage reporting function, and may also implement a state control function for the third switching element therein. The third switching element may be a MOS transistor, or may be a triode, a thyristor, or a relay. The MOS tube can be an N-type MOS tube or a P-type MOS tube.
In fig. 2, the third switch sub-module 211 includes a ninth switch Q1, the third switch element is a dual-back MOS transistor, and includes two N-type MOS transistors, the D pole of the first MOS transistor is connected to the output end of the first dc converter 111, the S pole is connected to the S pole of the second MOS transistor, and the D pole of the second MOS transistor is connected to the control end of the first switch module 150 (specifically including the first switch sub-module 151 and the seventh switch sub-module 153).
The fourth switch sub-module 212 is disposed between the first battery 112 and the power distribution module 120, and is used to control the connection or disconnection of the path between the first battery 112 and the power distribution module 120. One end of the fourth switch sub-module 212 is connected to the first battery 112, and the other end is connected to a control end of the first switch module 150 (specifically, including the first switch sub-module 151 and the seventh switch sub-module 153). The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the fourth switch sub-module 212 is closed, the path between the first battery 112 and the power distribution module 120 is conductive; when the fourth switch sub-module 212 is open, the path between the first battery 112 and the power distribution module 120 is open. In this embodiment of the present application, the power distribution module 120 may control the fourth switch sub-module 212 to be closed or opened according to the state of the first storage battery 112, for example, when the voltage of the output end of the first storage battery 112 is too large, the fourth switch sub-module 212 is controlled to be opened so as to cut off the connection between the first storage battery 112 and the power distribution module 120, thereby improving the power supply safety and avoiding irreversible damage to the first storage battery 112 or the load.
The fourth switch sub-module 212 may be a fourth intelligent fuse that encapsulates a fourth switching element, where the fourth intelligent fuse may implement a voltage detection function and a voltage reporting function, and may also implement a state control function for the fourth switching element therein. The fourth switching element may be a MOS transistor, or may be a triode, a thyristor, or a relay. The MOS tube can be an N-type MOS tube or a P-type MOS tube. In fig. 2, the fourth switch sub-module 212 includes a seventh switch S7, the fourth switch element is an N-type MOS transistor, a D pole of the N-type MOS transistor is connected to the control end of the first switch sub-module 151, and an S pole of the N-type MOS transistor is connected to the output end of the first battery 112.
Note that, when the third switch sub-module 211 is closed, the fourth switch sub-module 212 is opened. Conversely, with the third switch sub-module 211 open, the fourth switch sub-module 212 is closed. That is, there is typically only one of the third switch sub-module 211 and the fourth switch sub-module 212 in a closed state. By the above manner, the problems of electric quantity waste, potential safety hazard and the like caused by the fact that the first direct current converter 111 and the first storage battery 112 supply power to the load connected with the first power supply network 11 can be avoided, the power supply safety is improved, and the electric quantity is saved.
Unlike the embodiment of fig. 1, the circuit 100 further comprises a third switching module 220. The third switching module 220 is disposed between the second power supply module 130 and the power distribution module 120, and is used to control the connection or disconnection of the path between the second power supply module 130 and the power distribution module 120. In fig. 2, one end of the third switch module 220 is connected to the second power supply module 130, and the other end is connected to the control end of the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153). The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the third switch module 220 is closed, the path between the second power supply module 130 and the power distribution module 120 is conductive; when the third switch module 220 is opened, the path between the second power supply module 130 and the power distribution module 120 is opened. In this embodiment of the present application, the power distribution module 120 may control the third switch module 220 to be turned on or turned off according to the state of the second power supply module 130, for example, when the voltage at the output end of the second power supply module 130 is too large, the third switch module 220 is controlled to be turned on, so as to cut off the connection between the second power supply module 130 and the power distribution module 120, to improve the power supply safety, and avoid irreversible damage to the second power supply module 130 or the load.
In the embodiment of the present application, the second power supply module 130 includes a second dc converter 131 and a second battery 132. The second dc converter 131 and the second battery 132 are connected to both ends of the power distribution module 120, respectively. That is, the second dc converter 131 is connected to one end of the power distribution module 120, and the second battery 132 is connected to the other end of the power distribution module 120. The second dc converter 131 and the second battery 132 may alternatively be power sources in the second power supply network 12. Also, second dc converter 131 may charge second battery 132.
In the embodiment of the present application, the third switch module 220 includes a fifth switch sub-module 221 and a sixth switch sub-module 222.
The fifth switching sub-module 221 is disposed between the second dc converter 131 and the power distribution module 120, and is used to control on or off of a path between the second dc converter 131 and the power distribution module 120. In fig. 2, the fifth switch sub-module 221 has one end connected to the second dc converter 131 and the other end connected to the control end of the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153). The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the fifth switch sub-module 221 is closed, the path between the second dc converter 131 and the distribution module 120 is conductive; when the fifth switch sub-module 221 is opened, the path between the second dc converter 131 and the power distribution module 120 is opened. In this embodiment, the power distribution module 120 may control the fifth switch sub-module 221 to be turned on or turned off according to the state of the second dc converter 131, for example, when the voltage at the output end of the second dc converter 131 is too high, the fifth switch sub-module 221 is controlled to be turned on to cut off the connection between the second dc converter 131 and the power distribution module 120, so as to improve the power supply safety, and avoid irreversible damage to the second dc converter 131 or the load.
The fifth switch sub-module 221 may be a fifth intelligent fuse packaged with a fifth switching element, where the fifth intelligent fuse may implement a voltage detection function and a voltage reporting function, and may also implement a state control function for the fifth switching element therein. The fifth switching element may be a MOS transistor, or may be a triode, a thyristor, or a relay. The MOS tube can be an N-type MOS tube or a P-type MOS tube.
In fig. 2, the fifth switch sub-module 221 includes a tenth switch Q2, and the fifth switch element is a dual-back MOS transistor, and the connection manner thereof may be referred to the description of the third switch element.
A sixth switch sub-module 222 is disposed between second battery 132 and power distribution module 120 for controlling the conduction or disconnection of a path between second battery 132 and power distribution module 120. In fig. 2, a sixth switch sub-module 222 has one end connected to the second battery 132 and the other end connected to the control end of the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153). The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When sixth switch sub-module 222 is closed, the path between second battery 132 and power distribution module 120 is conductive; when sixth switch sub-module 222 is open, the path between second battery 132 and power distribution module 120 is open. In this embodiment, the power distribution module 120 may control the sixth switch sub-module 222 to be turned on or turned off according to the state of the second storage battery 132, for example, when the voltage at the output end of the second storage battery 132 is too high, the sixth switch sub-module 222 is controlled to be turned on, so as to cut off the connection between the second storage battery 132 and the power distribution module 120, to improve the power supply safety, and avoid irreversible damage to the second storage battery 132 or the load.
The sixth switch sub-module 222 may be a sixth intelligent fuse that encapsulates a sixth switching element, where the sixth intelligent fuse may implement a voltage detection function and a voltage reporting function, and may also implement a state control function for the sixth switching element therein. The sixth switching element may be a MOS transistor, or may be a triode, a thyristor, or a relay. The MOS tube can be an N-type MOS tube or a P-type MOS tube. In fig. 2, the sixth switch submodule 222 includes an eighth switch S8, and the sixth switching element is an N-type MOS transistor, and the connection manner thereof may refer to the description of the fourth switching element.
Note that, when the fifth switch sub-module 221 is closed, the sixth switch sub-module 222 is opened. Conversely, with the fifth switch sub-module 221 open, the sixth switch sub-module 222 is closed. That is, there is typically only one of the fifth 221 and sixth 222 switch sub-modules in the closed state. Through the above manner, the problems of electric quantity waste, potential safety hazard and the like caused by the fact that the second direct current converter 131 and the second storage battery 132 supply power to the load connected with the second power supply network can be avoided, the power supply safety is improved, and the electric quantity is saved.
Unlike the embodiment of fig. 1, the circuit 100 further includes a fourth switching module 230. The fourth switching module 230 is disposed between the second switching module 210 and the third switching module 230, and is used for controlling on or off of a path between the first power supply network 11 and the second power supply network 12. Specifically, one end of the fourth switch module 230 is connected to the common terminal of the third switch sub-module 211 and the fourth switch sub-module 212, the first switch module 150 (including the first switch sub-module 151 and the seventh switch sub-module 153 in particular), and the other end is connected to the common terminal of the fifth switch sub-module 221 and the sixth switch sub-module 222, the first switch module 150 (including the second switch sub-module 152 and the seventh switch sub-module 153 in particular). The embodiment of the present application does not exclude other specific connection modes, and the connection mode shown in fig. 2 does not limit the present application. When the fourth switching module 230 is closed, the path between the first power supply network 11 and the second power supply network 12 is conductive; when the fourth switching module 230 is opened, the path between the first power supply network 11 and the second power supply network 12 is disconnected. In the embodiment of the present application, the fourth switch module 230 is in a normally open state.
In this embodiment of the present application, the power distribution module 120 may control the fourth switch module 230 to be closed or opened according to the states of the first power supply network 11 and the second power supply network 12, for example, when the first power supply network 11 may normally supply power but the second power supply network 12 cannot normally supply power, the fourth switch module 230 is controlled to be closed so as to conduct a path between the first power supply network 11 and the second power supply network 12, so that the first power supply network 11 may perform redundant power supply for a load connected to the second power supply network 12; alternatively, when the second power supply network 12 can supply power normally but the first power supply network 11 cannot supply power normally, the fourth switch module 230 is controlled to be closed to conduct a path between the first power supply network 11 and the second power supply network 12, so that the second power supply network 12 can supply power redundantly to the load connected to the first power supply network 11.
The fourth switching module 230 may be an eighth intelligent fuse packaged with an eighth switching element, and the eighth intelligent fuse may implement a voltage detection function and a voltage reporting function, and may also implement a state control function for the eighth switching element therein. The eighth switching element may be a MOS transistor, a triode, a thyristor, a relay, or the like. The MOS tube can be an N-type MOS tube or a P-type MOS tube.
In fig. 2, the fourth switch module 230 includes an eleventh switch Q3, the eighth switch element is a dual-back MOS transistor, and it includes two N-type MOS transistors, the D pole of the first MOS transistor is connected to the D pole of the second MOS transistor of the first switch sub-module 151, the S pole is connected to the S pole of the second MOS transistor, and the D pole of the second MOS transistor is connected to the D pole of the second MOS transistor of the second switch sub-module 152.
In summary, the embodiment of the present application provides a power distribution circuit, in which a switch module (including a second switch module and a third switch module) is disposed between a power supply module (including a first power supply module and a second power supply module) and a power distribution module, so that when the power supply module fails, a path between the power supply module and the power distribution module can be disconnected to protect the power supply module and a load; in addition, a switch module (fourth switch module) is arranged between the first power distribution network and the second power distribution network, so that when one of the power supply networks cannot work, the switch module is controlled to be closed to conduct a passage between the first power supply network and the second power supply network, and the normally-working power supply network can supply power to loads connected with the abnormally-working power supply network, thereby realizing redundant power supply and improving power supply efficiency.
Referring to fig. 3, an embodiment of the present application provides a power distribution method, which may be applied to a power distribution module, and at least one load interface in a power distribution circuit is connected to a load. The method may include steps S310 to S330.
In step S310, a target current is acquired.
The target current refers to a current flowing through the target load. The target load may be any load to which the power distribution circuit is connected. In the above embodiment, the first intelligent fuse, the second intelligent fuse and the seventh intelligent fuse all have the functions of current detection and current reporting, so the power distribution module can receive the current value reported by the intelligent fuses.
Step S320, generating a first control signal for a specified switch module according to the target current.
The appointed switch module is a first switch module arranged between a target load interface and an appointed power supply network, the target load interface is connected with a target load, and the appointed power supply network is a first power supply network or a second power supply network.
In the embodiment of the application, the power distribution module controls the target load according to the magnitude of the current flowing through the target load, and if the current is too large, the designated switch module is controlled to be disconnected, so that a passage between the designated power supply network and the target load interface is disconnected.
If the load interface is a first load interface, if a first switch sub-module included in the first switch module is in a closed state, and a second switch sub-module is in an open state, if the target current is greater than a first current threshold, a first opening signal for the first switch sub-module is generated to control the first switch sub-module to switch from the closed state to the open state, and at this time, a passage between the first power supply network and the target load interface is disconnected, and the first power supply network cannot supply power to the first load. In some embodiments, the power distribution module further generates a first close signal to the second switch sub-module when the path between the second power supply network and the target load interface is conductive, the second power supply network
The network supplies power to the first load.
If the load interface is a first load interface, if a first switch sub-module included in the first switch module is in an open state, and if the target current is greater than a first current threshold, a second open signal for the second switch sub-module is generated to control the second switch sub-module to switch from the closed state to the open state, and at this time, a path between the second power supply network and the target load interface is disconnected, and the second power supply network cannot supply power to the first load. In some embodiments, the power distribution module further generates a second close signal to the first switch sub-module when the path between the first power supply network and the target load interface is conductive, the first power supply network powering the first load.
If the load interface is the second load interface, if a seventh switch sub-module included in the first switch module is in a closed state, and if the target current is greater than the second current threshold, generating a seventh opening signal for the seventh switch sub-module to control the seventh switch sub-module to switch from the closed state to the open state, at this time, a path between the first power supply network and the target load interface is disconnected, and the designated power supply network cannot supply power to the second load. The power supply network is designated as either the first power supply network or the second power supply network.
The first current threshold is determined from the first load, which is typically a short circuit current of the first load. The second current threshold is determined from the second load, which is typically a short circuit current of the second load. The first current threshold and the second current threshold may or may not be equal.
Step S330, the first switch module is controlled to be closed or opened according to the first control signal.
In the above embodiments, the first intelligent fuse, the second intelligent fuse, and the seventh intelligent fuse each have the control function of the switching element.
When the first control signal is a first opening signal, the intelligent fuse can control the switching element in the intelligent fuse to be opened, and when the first control signal is a first closing signal, the intelligent fuse can control the switching element in the intelligent fuse to be closed.
In some embodiments, the intelligent fuse controls the switching element therein to open or close by outputting different levels. Taking a switching element as an NMOS tube as an example, the intelligent fuse controls the input of a first level to the input end of the switching element, so that the voltage of a G level in the NMOS tube is lower than the voltage of an S pole and cannot reach the starting condition of the NMOS tube, and the switching element is opened; the intelligent fuse controls the input of the second level to the input end of the switching element, so that the voltage of the G level in the NMOS tube is higher than that of the S level, the opening condition of the NMOS tube can be achieved, and the first switching element is closed. The first level is less than the second level.
In summary, the embodiment of the present application provides a power distribution method, in which the first switch module is controlled to be turned on or turned off according to the current flowing through the target load, when the current flowing through the target load is too large, the target load is considered to have a relatively high probability of failure, and at this time, the first switch module is controlled to be turned on to disconnect the target load from the designated power supply network, so as to achieve separate isolation of the target load, and at this time, the designated power supply network can continue to supply power to other loads, thereby improving the power supply efficiency of the power distribution circuit.
Referring to fig. 4, fig. 4 is a flowchart of a power distribution method according to an embodiment of the present application, and the method may be applied to a power distribution module. The method may include steps S410 to S450.
In step S410, a first target voltage is obtained.
The first target voltage refers to a voltage at an output terminal of the first power supply module. In an embodiment of the present application, the first power supply module includes a first dc converter and a first battery. The first target voltage is the voltage at the output of the first battery when the first battery is supplying power to a load connected to the first power supply network. The first target voltage is the voltage at the output of the first dc converter when the first dc converter is supplying power to a load connected to the first supply network.
In the above embodiments, the third intelligent fuse and the fourth intelligent fuse have the functions of voltage detection and voltage reporting, so the power distribution module can receive the voltage value reported by the intelligent fuses.
Step S420, generating a second control signal for the second switch module according to the first target voltage.
In this embodiment of the present application, the power distribution module controls the second switch module according to the magnitude of the first target voltage, and if the first target voltage is too large, controls the second switch module to be turned off, so that the path between the first power supply module and the power distribution module is turned off.
And if the fourth switch sub-module included in the second switch module is in a closed state, the power supply of the load in the first power supply network is indicated by the first storage battery. When the voltage of the output end of the first storage battery is larger than a first voltage threshold value, a third opening signal aiming at the fourth switch sub-module is generated to control the fourth switch sub-module to switch from a closed state to an open state, and at the moment, a passage between the first storage battery and a load connected with the first power supply network is disconnected, and the first storage battery cannot supply power for the load connected with the first power supply network.
In some embodiments, if the third switch sub-module is in an open state, the power distribution module further generates a third close signal for the third switch sub-module, at which time the path between the first dc converter and the load connected to the first power supply network is conductive, and the first dc converter supplies power to the load connected to the first power supply network.
And if the third switch sub-module included in the second switch module is in a closed state, the power supply of the load in the first power supply network is performed through the first direct current converter. When the voltage of the output end of the first direct current converter is larger than the second voltage threshold value, a fourth opening signal aiming at the third switch sub-module is generated to control the third switch sub-module to switch from a closed state to an open state, and at the moment, a path between the first direct current converter and a load connected with the first power supply network is disconnected, and the first direct current converter cannot supply power for the load connected with the first power supply network.
The first voltage threshold and the second voltage threshold may be set according to experiments or experience, which is not limited in the embodiments of the present application. The first voltage threshold and the second voltage threshold may or may not be equal.
Step S430, controlling the second switch module to be opened or closed according to the second control signal.
The second control signal may refer to step S330 of the embodiment of fig. 3 for controlling the opening or closing of the second switch module, which is not described herein.
In step S440, after the second switch module is controlled to be opened and the third switch module is controlled to be closed, a fourth control signal for the fourth switch module is generated.
In the embodiment of the application, the power distribution module further controls the fourth switch module according to the states of the second switch module and the third switch module.
In some embodiments, when the first storage battery and the first dc converter in the first power supply module cannot supply power to the load in the first power supply network, if the second power supply network can normally supply power at this time, an eighth closing signal for the fourth switch module is generated, where the eighth closing signal may cause the fourth switch module to close, so as to conduct a path between the first power supply network and the second power supply network, so that the second power supply network may supply power to the load connected to the first power supply network, and power supply efficiency may be improved.
Step S450, the fourth switch module is controlled to switch from the open state to the closed state according to the fourth control signal.
The fourth control signal may refer to step S330 of the embodiment of fig. 3 for controlling the opening or closing of the eighth switch module, which is not described herein.
In summary, the embodiment of the present application provides a power distribution method, where the second switch module is controlled to be turned on or turned off according to the voltage of the output end of the first power supply module, and when the voltage of the output end of the first power supply module is too large, the second switch module may be controlled to be turned on, so as to disconnect the load connected to the first power supply network from the first power supply module, thereby protecting the load in the first power supply network and avoiding potential safety hazards. In addition, under the condition that the first power supply network cannot work normally, the fourth switch module is controlled to be closed so as to conduct a passage between the first power supply network and the second power supply network, so that the second power supply network can supply power for a load connected with the first power supply network, and the power supply efficiency can be improved.
Referring to fig. 5, fig. 5 is a flowchart of a power distribution method according to an embodiment of the present application, and the method may be applied to a power distribution module. The method may include steps S510 to S550.
Step S510, obtaining a second target voltage.
The second target voltage refers to the voltage at the output terminal of the second power supply module. In an embodiment of the present application, the first power supply module includes a second dc converter and a second battery. The second target voltage is the voltage at the output of the second battery when the second battery is supplying power to the load connected to the second power supply network. The second target voltage is the voltage at the output of the second dc converter when the second dc converter supplies power to the load connected to the second power supply network. In the above embodiments, the fifth intelligent fuse and the sixth intelligent fuse have the functions of voltage detection and voltage reporting, so the power distribution module can receive the voltage value reported by the intelligent fuses.
Step S520, generating a third control signal for the third switch module according to the second target voltage.
In this embodiment of the present application, the power distribution module controls the second target voltage according to the magnitude of the second target voltage, and if the second target voltage is too large, the third switch module is controlled to be turned off, so that a path between the second power supply module and the power distribution module is turned off.
In the case that the second power supply module includes the second dc converter and the second battery, the third switch module includes a fifth switch sub-module and a sixth switch sub-module, where the fifth switch sub-module is used to control disconnection or conduction of a path between the second dc converter and the power distribution module, and the sixth switch sub-module is used to control disconnection or conduction of a path between the second battery and the power distribution module.
And if the sixth switch sub-module included in the third switch module is in a closed state, the second storage battery is used for supplying power to the load in the second power supply network. When the voltage of the output end of the second storage battery is larger than the third voltage threshold value, a fifth opening signal aiming at the sixth switch sub-module is generated to control the sixth switch sub-module to switch from a closed state to an open state, and at the moment, a path between the second storage battery and a load connected with the second power supply network is disconnected, and the second storage battery cannot supply power for the load connected with the second power supply network.
In some embodiments, if the fifth switch sub-module is in the open state, the power distribution module further generates a fifth close signal for the fifth switch sub-module, at which time the path between the second dc converter and the load connected to the second power supply network is conductive, and the second dc converter supplies power to the load connected to the second power supply network.
And if the fifth switch sub-module included in the third switch module is in a closed state, the second direct current converter is used for supplying power to the load in the second power supply network. When the voltage of the second direct current converter is larger than the fourth voltage threshold, a sixth opening signal aiming at the fifth switch sub-module is generated to control the fifth switch sub-module to switch from a closed state to an open state, and at the moment, a path between the second direct current converter and a load connected with the second power supply network is disconnected, and the second direct current converter cannot supply power for the load connected with the second power supply network.
The third voltage threshold and the fourth voltage threshold may be set experimentally or empirically, which is not limited in the embodiments of the present application. The third voltage threshold and the fourth voltage threshold may be equal or unequal.
In step S530, the third switch module is controlled to be opened or closed according to the third control signal.
The third control signal may refer to step S330 of the embodiment of fig. 3 for controlling the opening or closing of the third switch module, which is not described herein.
In step S540, after the third switch module is controlled to be opened, and the second switch module is controlled to be closed, a fourth control signal is generated.
In the embodiment of the application, the power distribution module further controls the fourth switch module according to the states of the second switch module and the third switch module.
In some embodiments, when the second storage battery and the second dc converter in the second power supply module cannot supply power to the load in the second power supply network, if the first power supply network can normally supply power at this time, an eighth closing signal for the fourth switch module is generated, where the eighth closing signal may cause the fourth switch module to close, so as to conduct a path between the first power supply network and the second power supply network, so that the first power supply network may supply power to the load connected to the second power supply network, and power supply efficiency may be improved.
Step S550, controlling the fourth switch module to switch from the open state to the closed state according to the fourth control signal.
The fourth control signal may refer to step S330 of the embodiment of fig. 3 for controlling the opening or closing of the eighth switch module, which is not described herein.
In summary, the embodiment of the present application provides a power distribution method, where the third switch module is controlled to be turned on or turned off according to the voltage of the output end of the second power supply module, and when the voltage of the output end of the second power supply module is too large, the third switch module may be controlled to be turned on to disconnect the load connected to the second power supply network from the second power supply module, so as to protect the load in the second power supply network and avoid potential safety hazards. In addition, under the condition that the second power supply network cannot work normally, the fourth switch module is controlled to be closed so as to conduct a passage between the first power supply network and the second power supply network, so that the second power supply network can supply power for a load connected with the first power supply network, and the power supply efficiency can be improved.
Referring to fig. 6, an embodiment of the present application further provides a power consumption device 600, where the power consumption device 600 may be a power consumption device with a plurality of user loads, such as a vehicle, a cabinet, and the like, and the power consumption device 600 includes the power distribution circuit 100 and a plurality of loads 610 described in the foregoing embodiment, where the plurality of loads 610 are connected to a plurality of load interfaces of the power distribution circuit 100 respectively.
The foregoing description is not intended to limit the preferred embodiments of the present application, but is not intended to limit the scope of the present application, and any such modifications, equivalents and adaptations of the embodiments described above in accordance with the principles of the present application should and are intended to be within the scope of the present application, as long as they do not depart from the scope of the present application.
Claims (8)
1. A power distribution circuit, the circuit comprising:
a power distribution module;
the first power supply module is connected with the power distribution module to form a first power supply network together with the power distribution module;
the second power supply module is connected with the power distribution module to form a second power supply network together with the power distribution module;
the power distribution module comprises a plurality of load interfaces, and each load interface is connected to the first power supply network and/or the second power supply network; the plurality of load interfaces comprise a first load interface and a second load interface, the first load interface is used for connecting a first load, and the second load interface is used for connecting a second load; the first load interface is connected with the first power supply network and the second power supply network; the second load interface is connected with the first power supply network or the second power supply network;
The first switch module is arranged between the load interface and a designated power supply network and is used for controlling the connection or disconnection of a passage between the load interface and the designated power supply network based on the current flowing through a load connected with the load interface, wherein the designated power supply network is the first power supply network or the second power supply network;
the second switch module is arranged between the first power supply module and the power distribution module;
the third switch module is arranged between the second power supply module and the power distribution module;
the fourth switch module is arranged between the second switch module and the third switch module and is used for controlling the connection or disconnection of a passage between the first power supply network and the second power supply network;
the first switch module comprises a first switch sub-module, a second switch sub-module and a seventh switch sub-module;
the first switch sub-module is arranged between the first load interface and the first power supply network and is used for controlling the connection or disconnection of a passage between the first load interface and the first power supply network based on the current flowing through a load connected with the first load interface;
The second switch sub-module is arranged between the first load interface and the second power supply network and is used for controlling the connection or disconnection of a passage between the first load interface and the second power supply network based on the current flowing through a load connected with the first load interface;
the seventh switch sub-module is arranged between the second load interface and the first power supply network and is used for controlling the connection or disconnection of a path between the second load interface and the first power supply network based on the current flowing through the load connected by the second load interface; or the seventh switch sub-module is arranged between the second load interface and the second power supply network and is used for controlling the connection or disconnection of a path between the second load interface and the second power supply network based on the current flowing through the load connected by the second load interface.
2. The power distribution circuit of claim 1 wherein the second switch module is configured to control the conduction or disconnection of a path between the first power supply module and the power distribution module; the third switch module is used for controlling the connection or disconnection of a passage between the second power supply module and the power distribution module.
3. The power distribution circuit of claim 2 wherein the first power module comprises a first dc converter and a first battery, the first dc converter and the first battery being connected to respective ends of the power distribution module; the second switch module comprises a third switch sub-module and a fourth switch sub-module; the third switch sub-module is arranged between the first direct current converter and the power distribution module, and the fourth switch sub-module is arranged between the first storage battery and the power distribution module;
the second power supply module comprises a second direct current converter and a second storage battery, and the second direct current converter and the second storage battery are respectively connected to two ends of the power distribution module; the third switch module comprises a fifth switch sub-module and a sixth switch sub-module; the fifth switch sub-module is arranged between the second direct-current converter and the power distribution module, and the sixth switch sub-module is arranged between the second storage battery and the power distribution module.
4. A power distribution method applied to the power distribution circuit of any one of claims 1 to 3, wherein at least one load interface in the power distribution circuit is connected with a load, the method comprising:
Obtaining a target current, wherein the target current refers to a current flowing through a target load;
generating a first control signal for a specified switch module according to the target current, wherein the specified switch module is a first switch module arranged between a target load interface and a specified power supply network, the target load interface is connected with the target load, and the specified power supply network is a first power supply network or a second power supply network;
and controlling the first switch module to be closed or opened according to the first control signal.
5. The method of claim 4, wherein the target load interface is a first load interface and the designated switch module comprises a first switch sub-module and a second switch sub-module; the first control signal comprises a first opening signal and a first closing signal, or the first control signal comprises a second opening signal and a second closing signal;
the generating a first control signal for a first switch module according to the target current comprises:
when the first switch sub-module is closed and the second switch sub-module is opened, if the target current is larger than a current threshold, generating the first opening signal and the first closing signal, controlling the first switch sub-module to be opened according to the first opening signal, and controlling the second switch sub-module to be closed according to the first closing signal;
And under the condition that the first switch sub-module is opened and the second switch sub-module is closed, if the target current is larger than a current threshold value, generating a second opening signal and a second closing signal, controlling the second switch sub-module to be opened according to the second opening signal, and controlling the first switch sub-module to be closed according to the second closing signal.
6. The method according to claim 4 or 5, characterized in that the method further comprises:
acquiring a first target voltage, wherein the first target voltage refers to the voltage of an output end of a first power supply module;
generating a second control signal for a second switching module according to the first target voltage;
controlling the second switch module to be opened or closed according to the second control signal;
and/or the number of the groups of groups,
acquiring a second target voltage, wherein the second target voltage is the voltage of the output end of the second power supply module;
generating a third control signal for a third switch module according to the second target voltage;
and controlling the third switch module to be opened or closed according to the third control signal.
7. The method of claim 6, wherein the method further comprises:
Generating a fourth control signal when the second switch module is controlled to be opened and the third switch module is controlled to be closed, or when the third switch module is controlled to be opened and the second switch module is controlled to be closed;
and controlling the fourth switch module to switch from an open state to a closed state according to the fourth control signal.
8. A powered device comprising a plurality of loads, and the power distribution circuit of any of claims 1-3, wherein the plurality of loads interface with the plurality of loads.
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