CN113890371B - Multi-output power distribution control device - Google Patents
Multi-output power distribution control device Download PDFInfo
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- CN113890371B CN113890371B CN202111159125.5A CN202111159125A CN113890371B CN 113890371 B CN113890371 B CN 113890371B CN 202111159125 A CN202111159125 A CN 202111159125A CN 113890371 B CN113890371 B CN 113890371B
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- 238000005859 coupling reaction Methods 0.000 claims abstract 3
- 230000001360 synchronised effect Effects 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000005669 field effect Effects 0.000 claims description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 6
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a multi-output power distribution control device, which is used for generating a first direct current through coupling a first secondary side unit of a power converter with a primary side unit in an induction way, and generating a second direct current through coupling a second secondary side unit with the primary side unit in an induction way. The first direct current is received by a first switch unit, and the second direct current is received by a second switch unit. And finally, receiving a charging control signal transmitted by a power receiving device through an output port by a control unit, controlling one of the first switch unit or the second switch unit to be conducted according to the charging control signal, and controlling the other to be non-conducted, so that the output port outputs the first direct current or the second direct current. Because the invention only has one group of power converters, a plurality of groups of power converters are not needed, and the space needed by the whole group of power converters can be saved, so that the space application efficiency can be improved and the application of wide voltage adjustment range can be met.
Description
Technical Field
The present invention relates to a power distribution control device, and more particularly, to a power distribution control device with multiple outputs.
Background
With the widespread popularity of electronic products, the charging modes of the electronic products are also becoming more and more diverse, and various electronic products have different charging powers, so the electronic products with different charging powers have to be prepared with chargers with various output powers, which is inconvenient for users. For example, with the charging specifications promulgated by the USB developer Forum (USB IF), there are output voltage specifications of 5 volts (V) -48V, and output power specifications of up to 240 watts (W).
Therefore, in order to provide a wide voltage regulation range and meet the requirement of 240W high power, the conventional charger needs multiple switching structures for integrated output. In this way, the space utilization rate is reduced, and the portable charger is not portable and used because the size of the portable charger is increased. For example, referring to fig. 6, in order to achieve the functions of high power and multiple voltage output, the conventional charger employs multiple isolated dc/dc converter modules 300, 400 connected in parallel. One group is usually responsible for the low voltage requirement and the other group is responsible for the high voltage requirement.
When the charger receives ac power through the input port 100, the ac power is converted into dc power by the rectifying unit 200, and then is input to the primary side units of the dc/dc converter modules 300 and 400, and then the secondary side units of the dc/dc converter modules 300 and 400 output the converted dc power to the high power output port 500 and the normal power output port 600, respectively. The high power output port 500 is used for outputting the charging power of the high voltage requirement to charge the electronic product to be charged, and the general power output port 600 is used for outputting the charging power of the low voltage requirement to charge the electronic product to be charged.
However, this architecture requires multiple isolated dc/dc converter modules, which limits the space utilization efficiency of the charger, resulting in a large size and inconvenient portability of the charger. Therefore, there is still a need for further improvement in existing chargers.
Disclosure of Invention
In view of the above, the present invention provides a multi-output power distribution control device, which can output a plurality of different output powers through a single output port, and can effectively improve the space utilization efficiency without providing a plurality of dc/dc converter modules.
The multi-output power distribution control device comprises:
an input port, which is electrically connected to a power supply to receive an alternating current;
the rectification unit is electrically connected with the input port, receives the alternating current and converts the alternating current into direct current;
a power converter, comprising:
a primary side unit electrically connected to the rectifying unit for receiving the direct current;
a first secondary side unit coupled to the primary side unit for inducing a first direct current;
a second secondary side unit coupled to the primary side unit for inducing a second direct current;
a first switch unit electrically connected with the first secondary side unit and receiving the first direct current;
the second switch unit is electrically connected with the second secondary side unit and receives the second direct current;
an output port electrically connected to the first switch unit and the second switch unit, and connected to a power receiving device;
the control unit is electrically connected with the output port, the first switch unit, the second switch unit, the first secondary side unit, the second secondary side unit and the primary side unit;
the control unit receives a charging control signal transmitted by the powered device through the output port;
when the charging control signal is a high-voltage charging signal, the control unit controls the first switch unit to be conducted and controls the second switch unit to be non-conducted, so that the output port outputs the first direct current, and the control unit controls the primary side unit according to the first direct current and the high-voltage charging signal;
when the charging control signal is a low-voltage charging signal, the control unit controls the second switch unit to be conducted and controls the first switch unit to be non-conducted, so that the output port outputs the second direct current, and the control unit controls the primary side unit according to the second direct current and the low-voltage charging signal.
Since the invention has only one group of power converters, and two switch units are used to switch the direct current to be output. The output multiple groups of direct currents are respectively connected to the output port through the two switch units, and the control unit is used for receiving the charging control signal transmitted by the power receiving device connected with the output port and judging the current power to be output, so that the first switch unit and the second switch unit are adjusted to be opened and closed so as to output the direct currents with the corresponding output power to the output port, and the power receiving device is charged. Therefore, the multi-output power distribution control device provided by the invention does not need a plurality of groups of power converters, and can save the space required by a whole group of power converters, so that the space application efficiency can be improved, the application of wide voltage adjustment range can be met, the space utilization rate is greatly improved, and the range of optimal design is reached.
Drawings
Fig. 1 is a schematic system architecture diagram of a multi-output power distribution control device according to the present invention.
Fig. 2 is a schematic diagram of another system architecture of the multi-output power distribution control device according to the present invention.
Fig. 3 is a schematic circuit diagram of a multi-output power distribution control device according to the present invention.
Fig. 4 is a schematic diagram of another system architecture of the multi-output power distribution control device according to the present invention.
Fig. 5 is a schematic system architecture diagram of a multi-output power distribution control device according to another embodiment of the present invention.
Fig. 6 is a schematic diagram of a system architecture of a conventional charger.
Detailed Description
Referring to fig. 1, the multi-output power distribution control device of the present invention includes an input port 10, a rectifying unit 20, a power converter 30, a first switch unit 40, a second switch unit 50, an output port 60 and a control unit 70.
The input port 10 is electrically connected to a power source for receiving an alternating current. The rectifying unit 20 is electrically connected to the input port 10 to receive the alternating current and convert the alternating current into a direct current.
The power converter 30 includes a primary side unit 31, a first secondary side unit 32, and a second secondary side unit 33. The primary side unit 31 is electrically connected to the rectifying unit 20 to receive the direct current. The first secondary side unit 32 is coupled to the primary side unit 31 to induce a first direct current. The second secondary side unit 33 is coupled to the primary side unit 31 to inductively generate a second direct current.
The first switch unit 40 is electrically connected to the first secondary side unit 32 and receives the first direct current. The second switch unit 50 is electrically connected to the second secondary side unit 33 and receives the second direct current.
The output port 60 is electrically connected to the first switch unit 40 and the second switch unit 50, and is electrically connected to a powered device. The control unit 70 is electrically connected to the output port 60, the first switch unit 40, the second switch unit 50, the first secondary side unit 32, the second secondary side unit 33, and the primary side unit 31.
The control unit 70 receives a charging control signal transmitted by the powered device through the output port 60. When the charging control signal is a high voltage charging signal, the control unit 70 controls the first switch unit 40 to be turned on and controls the second switch unit 50 to be turned off, so that the output port 60 outputs the first direct current, and the control unit 70 controls the primary side unit 31 according to the first direct current and the high voltage charging signal. When the charging control signal is a low voltage charging signal, the control unit 70 controls the second switch unit 50 to be turned on and controls the first switch unit 40 to be turned off, so that the output port 60 outputs the second direct current, and the control unit 70 controls the primary side unit 31 according to the second direct current and the low voltage charging signal.
Since the present invention has only one set of power converters 30 and uses two switching units to switch the output dc power, i.e., the first switching unit 40 and the second switching unit 50. The first direct current or the second direct current is respectively output to the output port 60 through the first switch unit 40 and the second switch unit 50, and the control unit 70 determines the current power to be output according to the charging control signal transmitted by the powered device connected to the output port 60, thereby adjusting the on/off of the first switch unit 40 and the second switch unit 50, controlling the direct current corresponding to the output power to be output to the output port 60, and further providing the powered device for charging. Therefore, the multi-output power distribution control device provided by the invention does not need a plurality of groups of power converters, and can save the space required by a whole group of power converters, so that the space application efficiency can be improved, the application of wide voltage adjustment range can be met, the space utilization rate is greatly improved, and the range of optimal design is reached.
For example, when the control unit 70 determines that the powered device needs a high power source to charge according to the charging control signal, the control unit 70 controls the first switch unit 40 to be turned on, outputs the first direct current with high voltage, such as 48 volts (V), and charges the powered device with high power of 240 watts (W) at a current of 5 amps (a). When the control unit 70 determines that the power receiving device needs a low power source to charge according to the charging control signal, the control unit 70 controls the second switch unit 50 to be turned on, outputs the second dc power with low voltage, for example, 5V dc power, and charges the power receiving device with low power of 15W at 3A.
Referring to fig. 2 and 3, the multi-output power distribution control device further includes an anti-electromagnetic interference unit 80, the anti-electromagnetic interference unit 90 is electrically connected between the input port 10 and the rectifying unit 20, and the ac power is output to the rectifying unit 20 after passing through the anti-electromagnetic interference unit 80. By the arrangement of the anti-electromagnetic interference unit 80, electromagnetic interference noise in the alternating current can be reduced. In the present embodiment, the rectifying unit 20 is a bridge rectifier, and the anti-electromagnetic interference unit 80 is a common mode inductor.
Further, the first switching unit 40 is a first Metal Oxide Semiconductor Field Effect Transistor (MOSFET), and a source and a drain of the first MOSFET are electrically connected between the first secondary side unit 32 and the output port 60, and a gate of the first MOSFET is electrically connected to the control unit 70.
The second switch unit 50 is a second MOSFET, and a source and a drain of the second MOSFET are electrically connected between the second secondary side unit 33 and the output port 60, and a gate of the second MOSFET is electrically connected to the control unit 70.
In this way, the control unit 70 can control the on/off of the first switch unit 40 and the second switch unit 50 by controlling the gate voltages of the first MOSFET and the second MOSFET.
The first secondary side unit 32 includes a secondary side module 321 and a first synchronous rectification control (Synchronous Rectifier control) module 322. The second secondary unit 33 includes a second secondary module 331 and a second synchronous rectification control module 332.
The first secondary module 321 includes a first coil 3211, and the first coil 3211 is coupled to the primary unit 31 to generate the first direct current. The first synchronous rectification control module 322 is electrically connected to the first secondary side module 321 and the first switching unit 40, so as to receive the first direct current and output the first direct current after synchronous rectification to the first switching unit 40.
The second secondary module 331 includes a second coil 3311, and the second coil 3311 is coupled to the primary unit 31 to inductively generate the second dc power. The second synchronous rectification control module 332 is electrically connected to the second secondary side module 331 and the second switching unit 50, so as to receive the second direct current and output the second direct current after synchronous rectification to the second switching unit 50. In the present embodiment, the first synchronous rectification control module 322 includes a first synchronous rectification controller 3221, and the second synchronous rectification control module 332 includes a second synchronous rectification controller 3321. The first synchronous rectifier 3221 and the second synchronous rectifier 3321 are all MP3608GJ-Z.
In addition, the primary unit 31 includes a primary coil 311 and a primary switch 312.
The primary coil 311 couples the first coil 3211 of the first secondary module 321 of the first secondary unit 32 and the second coil 3311 of the second secondary module 331 of the second secondary unit 33.
The primary switch 312 is connected in series with the primary coil 311 and then connected between a positive output terminal and a negative output terminal of the rectifying unit 20, and a control terminal of the primary switch 312 is connected to the control unit 70.
Further, the control unit 70 includes a circuit control module 71 and a power conversion control module 72.
The circuit control module 71 is electrically connected to the output port 60, the gate of the first MOSFET of the first switching unit 40, the gate of the second MOSFET of the second switching unit 50, the first secondary side unit 32 and the second secondary side unit 33. The circuit control module 71 receives the charging control signal transmitted by the powered device through the output port 60. When the charging control signal is the high voltage charging signal, the circuit control module 71 controls the first switch unit 40 to be turned on and controls the second switch unit 50 to be turned off, so that the output port 60 outputs the first direct current. When the charging control signal is the low voltage charging signal, the circuit control module 71 controls the second switch unit 50 to be turned on and controls the first switch unit 40 to be turned off, so that the output port 60 outputs the second direct current.
The power conversion control module 72 is coupled to the circuit control module 71 and is electrically connected to a control end of the primary switch 312 of the primary unit 31, and the power conversion control module 72 controls the primary unit 31 according to a feedback control signal generated by the circuit control module 71. When the first switch unit 40 is turned on, the circuit control module 71 generates the feedback control signal according to the first dc and the high voltage charging signal. When the second switch unit 50 is turned on, the circuit control module 71 generates the feedback control signal according to the second dc power and the low voltage charging signal. In the present embodiment, the model of the circuit control module 71 is WT6633F, and the model of the power conversion control module 72 is NCP12601.
Referring to fig. 4, the circuit control module 71 includes a charge controller 711 and a control circuit 712.
The charge controller 711 is electrically connected to the output port 60, the first switching unit 40, and the second switching unit 50. The charging controller 711 receives the charging control signal transmitted by the powered device through the output port 60. When the charging control signal is the high voltage charging signal, the charging controller 711 controls the first switch unit 40 to be turned on, and controls the second switch unit 50 to be turned off, so that the output port 60 outputs the first direct current. When the charging control signal is the low voltage charging signal, the charging controller 711 controls the second switch unit 50 to be turned on and controls the first switch unit 40 to be turned off, so that the output port 60 outputs the second dc power.
The control circuit 712 is electrically connected to the first secondary side unit 32, the second secondary side unit 33, and the charge controller 711, and is coupled to the power conversion control module 72. When the first switch unit 40 is turned on, the control circuit 712 generates the feedback control signal according to the first direct current and the high voltage charging signal. When the second switch unit 50 is turned on, the control circuit 712 generates the feedback control signal according to the second dc power and the low voltage charging signal.
In this embodiment, the charging controller 711 is a USB power controller (USB PD controller), and the control circuit 712 is optically coupled to the power conversion control module 72. The control circuit 712 and the power conversion control module 72 control the primary side unit 31 in a feedback control manner of a conventional dc/dc converter, which is not described herein.
The multi-output power distribution control device further comprises a power factor correction circuit 91 and a power factor controller 92.
The power factor correction circuit 91 is electrically connected between the rectifying unit 20 and the primary side unit 31, receives the direct current, and outputs the corrected direct current to the primary side unit 31. The power factor controller 92 is electrically connected to the power factor correction circuit 91, receives the corrected dc power, and feedback-controls the power factor correction circuit 91 according to the corrected dc power.
Referring to fig. 5, in another embodiment of the present invention, the first switching unit 40 includes a first switch 41, a first direct current/direct current (DC/DC) converter 42, and a three-switch module 43.
The first switch 41 is electrically connected between the first secondary side unit 32 and the output port 60 to receive the first direct current and is electrically connected to the control unit 70. The first DC/DC converter 42 is electrically connected to the first secondary side unit 32 to receive the first direct current and convert it into a third direct current. The third switch 43 is electrically connected between the first DC/DC converter and the output port 60 to receive the third direct current and is electrically connected to the control unit 70.
The second switching unit 50 includes a second switch 51, a second DC/DC converter 52, and a fourth switch 53.
The second switch 51 is electrically connected between the second secondary unit 33 and the output port 60 to receive the second direct current, and is electrically connected to the control unit 70. The second DC/DC converter is electrically connected to the second secondary unit 33 to receive the second direct current and convert the second direct current into a fourth direct current. The fourth switch 43 is electrically connected between the second DC/DC converter 52 and the output port 60 to receive the fourth direct current and is electrically connected to the control unit 70.
When the charging control signal is the high voltage charging signal, the control unit 70 controls the first switch 41 to be turned on, and controls the second switch 51, the third switch 43 and the fourth switch 43 to be turned off, so that the output port 60 outputs the first direct current.
When the charging control signal is a high voltage charging signal, the control unit 70 controls the third switch 43 to be turned on, and controls the first switch 41, the second switch 51 and the fourth switch 53 to be turned off, so that the output port 60 outputs the third direct current.
When the charging control signal is the low voltage charging signal, the control unit 70 controls the second switch 51 to be turned on, and controls the first switch 41, the third switch 43 and the fourth switch 53 to be turned off, so that the output port 60 outputs the second direct current.
When the charging control signal is a low voltage charging signal, the control unit 70 controls the fourth switch 53 to be turned on, and controls the first switch 41, the second switch 51 and the third switch 43 to be turned off, so that the output port 60 outputs the fourth direct current.
Further, the first switch 41 is the first MOSFET, and a source and a drain of the first MOSFET are electrically connected between the first secondary side cell 32 and the output port 60, and a gate of the first MOSFET is electrically connected to the control unit 70.
The third switch 43 is a third MOSFET, and a source and a drain of the third MOSFET are electrically connected between the first DC/DC converter 42 and the output port 60, and a gate of the third MOSFET is electrically connected to the control unit 70.
The second switch 51 is the second MOSFET, and a source and a drain of the second MOSFET are electrically connected between the second secondary side cell 33 and the output port 60, and a gate of the second MOSFET is electrically connected to the control unit 70.
The fourth switch 53 is a fourth MOSFET, and a source and a drain of the fourth MOSFET are electrically connected between the second DC/DC converter 52 and the output port 60, and a gate of the fourth MOSFET is electrically connected to the control unit 70.
In this embodiment, since the output port 60 can receive the first to fourth direct currents with more different voltages, and the control unit 70 controls the first to fourth switches 41, 43, 51, 53 according to the received charging control signal, respectively, so that the output port 60 can output more voltages to charge the powered device. For example, the first direct current is a power supply with voltage 48V, current 5A and output power 240W. The second direct current is a power supply with 20V voltage, 5A current and 100W output power. The third direct current is a power supply with voltage 36V, current 5A and output power of 180W. The fourth direct current is a power supply with voltage of 5V, current of 3A and output power of 15W.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (10)
1. A multi-output power distribution control device, comprising:
an input port, which is electrically connected to a power supply to receive an alternating current;
the rectification unit is electrically connected with the input port, receives the alternating current and converts the alternating current into direct current;
a power converter, comprising:
a primary side unit electrically connected to the rectifying unit for receiving the direct current;
a first secondary side unit coupled to the primary side unit for inducing a first direct current;
a second secondary side unit coupled to the primary side unit for inducing a second direct current;
the first switch unit is electrically connected with the first secondary side unit and receives the first direct current;
the second switch unit is electrically connected with the second secondary side unit and receives the second direct current;
an output port electrically connected to the first switch unit and the second switch unit, and connected to a power receiving device;
the control unit is electrically connected with the output port, the first switch unit, the second switch unit, the first secondary side unit, the second secondary side unit and the primary side unit;
the control unit receives a charging control signal transmitted by the powered device through the output port;
when the charging control signal is a high-voltage charging signal, the control unit controls the first switch unit to be conducted and controls the second switch unit to be non-conducted, so that the output port outputs the first direct current, and the control unit controls the primary side unit according to the first direct current and the high-voltage charging signal;
when the charging control signal is a low-voltage charging signal, the control unit controls the second switch unit to be conducted and controls the first switch unit to be non-conducted, so that the output port outputs the second direct current, and the control unit controls the primary side unit according to the second direct current and the low-voltage charging signal.
2. The multi-output power distribution control apparatus according to claim 1, further comprising:
the anti-electromagnetic interference unit is electrically connected between the input port and the rectifying unit, and the alternating current passes through the anti-electromagnetic interference unit and then is output to the rectifying unit.
3. The multi-output power distribution control device according to claim 1, wherein the first switch unit is a first mosfet, a source and a drain of the first mosfet are electrically connected between the first secondary side unit and the output port, and a gate of the first mosfet is electrically connected to the control unit;
the second switch unit is a second metal oxide semiconductor field effect transistor, a source electrode and a drain electrode of the second metal oxide semiconductor field effect transistor are electrically connected between the second secondary side unit and the output port, and a grid electrode of the second metal oxide semiconductor field effect transistor is electrically connected to the control unit.
4. The multi-output power distribution control apparatus according to claim 1, wherein the first secondary side unit includes:
a first secondary side module including a first coil coupled to the primary side unit for inducing the first direct current;
the first synchronous rectification control module is electrically connected with the first secondary side module and the first switch unit to receive the first direct current and output the first direct current subjected to synchronous rectification to the first switch unit;
wherein the second secondary side unit comprises:
a second secondary side module including a second coil coupled to the primary side unit for inducing the second direct current;
and the second synchronous rectification control module is electrically connected with the second secondary side module and the second switch unit so as to receive the second direct current and output the second direct current subjected to synchronous rectification to the second switch unit.
5. The multi-output power distribution control apparatus according to claim 1, wherein the primary side unit includes:
a primary side coil coupling the first secondary side unit and the second secondary side unit;
and the primary side switch is connected between a positive output end and a negative output end of the rectifying unit after being connected with the primary side coil in series, and a control end of the primary side switch is connected to the control unit.
6. The multi-output power distribution control apparatus according to claim 1, wherein the control unit includes:
the circuit control module is electrically connected with the output port, the first switch unit, the second switch unit, the first secondary side unit and the second secondary side unit; the circuit control module receives the charging control signal transmitted by the powered device through the output port; when the charging control signal is the high-voltage charging signal, the circuit control module controls the first switch unit to be conducted and controls the second switch unit to be non-conducted, so that the output port outputs the first direct current; when the charging control signal is the low-voltage charging signal, the circuit control module controls the second switch unit to be conducted and controls the first switch unit to be non-conducted, so that the output port outputs the second direct current;
the power supply conversion control module is coupled with the circuit control module and is electrically connected with the primary side unit, and the power supply conversion control module controls the primary side unit according to a feedback control signal generated by the circuit control module; when the first switch unit is conducted, the circuit control module generates the feedback control signal according to the first direct current and the high-voltage charging signal; when the second switch unit is turned on, the circuit control module generates the feedback control signal according to the second direct current and the low-voltage charging signal.
7. The multi-output power distribution control apparatus according to claim 6, wherein the circuit control module includes:
the charging controller is electrically connected with the output port, the first switch unit and the second switch unit; wherein the charging controller receives the charging control signal transmitted by the powered device through the output port; when the charging control signal is the high-voltage charging signal, the charging controller controls the first switch unit to be conducted and controls the second switch unit to be non-conducted, so that the output port outputs the first direct current; when the charging control signal is the low-voltage charging signal, the charging controller controls the second switch unit to be conducted and controls the first switch unit to be non-conducted, so that the output port outputs the second direct current;
the control circuit is electrically connected with the first secondary side unit, the second secondary side unit and the charging controller and is coupled with the power supply conversion control module; when the first switch unit is conducted, the control circuit generates the feedback control signal according to the first direct current and the high-voltage charging signal; when the second switch unit is turned on, the control circuit generates the feedback control signal according to the second direct current and the low-voltage charging signal.
8. The multi-output power distribution control apparatus according to claim 1, further comprising:
the power factor correction circuit is electrically connected between the rectifying unit and the primary side unit, receives the direct current and outputs the corrected direct current to the primary side unit;
and the power factor controller is electrically connected with the power factor correction circuit, receives the corrected direct current and feedback controls the power factor correction circuit according to the corrected direct current.
9. The multi-output power distribution control apparatus according to claim 1, wherein the first switching unit includes:
a first switch electrically connected between the first secondary side unit and the output port to receive the first direct current and electrically connected to the control unit;
a first DC/DC converter electrically connected to the first secondary side unit for receiving the first DC and converting the first DC into a third DC;
a third switch electrically connected between the first DC/DC converter and the output port for receiving the third DC and electrically connected to the control unit;
wherein the second switching unit includes:
a second switch electrically connected between the second secondary side unit and the output port to receive the second direct current and electrically connected to the control unit;
a second DC/DC converter electrically connected to the second secondary side unit for receiving the second DC and converting the second DC into a fourth DC;
a fourth switch electrically connected between the second DC/DC converter and the output port for receiving the fourth DC and electrically connected to the control unit;
when the charging control signal is the high-voltage charging signal, the control unit controls the first switch to be conducted, and controls the second switch, the third switch and the fourth switch to be non-conducted, so that the output port outputs the first direct current;
when the charging control signal is a primary high-voltage charging signal, the control unit controls the third switch to be conducted, and controls the first switch, the second switch and the fourth switch to be non-conducted, so that the output port outputs the third direct current;
when the charging control signal is the low-voltage charging signal, the control unit controls the second switch to be conducted, and controls the first switch, the third switch and the fourth switch to be non-conducted, so that the output port outputs the second direct current;
when the charging control signal is a low-voltage charging signal, the control unit controls the fourth switch to be conducted, and controls the first switch, the second switch and the third switch to be non-conducted, so that the output port outputs the fourth direct current.
10. The multi-output power distribution control device according to claim 9, wherein the first switch is a first mosfet, a source and a drain of the first mosfet are electrically connected between the first secondary side unit and the output port, and a gate of the first mosfet is electrically connected to the control unit;
wherein the third switch is a third mosfet, a source and a drain of the third mosfet are electrically connected between the first dc/dc converter and the output port, and a gate of the third mosfet is electrically connected to the control unit;
the second switch is a second metal oxide semiconductor field effect transistor, a source electrode and a drain electrode of the second metal oxide semiconductor field effect transistor are electrically connected between the second secondary side unit and the output port, and a grid electrode of the second metal oxide semiconductor field effect transistor is electrically connected to the control unit;
the fourth switch is a fourth mosfet, a source and a drain of the fourth mosfet are electrically connected between the second dc/dc converter and the output port, and a gate of the fourth mosfet is electrically connected to the control unit.
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