CN109254213B - Electrical property detection device and method for intelligent assembly - Google Patents
Electrical property detection device and method for intelligent assembly Download PDFInfo
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- CN109254213B CN109254213B CN201811189508.5A CN201811189508A CN109254213B CN 109254213 B CN109254213 B CN 109254213B CN 201811189508 A CN201811189508 A CN 201811189508A CN 109254213 B CN109254213 B CN 109254213B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
Abstract
The invention provides an electrical property detection device and method of an intelligent assembly, wherein an electronic load is connected with the output end of the intelligent assembly, so that a power module of the intelligent assembly can replace a photovoltaic assembly to supply power for an intelligent junction box of the intelligent assembly before the intelligent assembly enters an IV scanning process, a switch in the intelligent junction box is ensured to be closed in advance, and a complete curve is obtained by scanning; therefore, the disassembling and assembling work of the intelligent junction box caused by the short circuit of the switch of the intelligent junction box in the prior art is not needed, and the problem of complex operation is avoided.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to an electrical property detection device and method of an intelligent assembly.
Background
The photovoltaic power generation technology is widely applied at home and abroad as a renewable energy power generation technology; because the photovoltaic arrays connected in series have very high voltage, in order to improve the safety of a photovoltaic system, an intelligent junction box with a turn-off function is usually integrated on a photovoltaic module, so that the photovoltaic module becomes an intelligent module. As shown in fig. 1, the intelligent junction box mainly includes a sampling module, a power supply for taking electricity from the photovoltaic module, a controller, a driving module, and at least one switch K1 connected in series with the photovoltaic module. When the photovoltaic module works normally, the controller controls the switch K1 to be conducted through the driving module, and the photovoltaic module can output electric energy; when the photovoltaic module needs to be turned off, the controller controls the switch K1 to be turned off through the driving module, so that the external output voltage of the photovoltaic module is 0, and the function of safety protection is realized.
As the intelligent module is the same as the conventional module, the electrical performance detection is required before delivery, that is, an electronic load is connected to the output end of the photovoltaic module for IV scanning while the photovoltaic module is polished, as shown in fig. 2; the specific detection principle is as follows: gradually changing the resistance value of the electronic load between infinity and zero so as to realize the scanning of the output of the photovoltaic module between an open circuit and a short circuit; and recording the voltage and current of each point in the lower scanning process so as to draw a corresponding curve on an upper computer. In the detection process, the switch K1 is required to be in a closed state, otherwise, a current loop cannot be formed; however, the switch K1 needs to supply power to the driving module from the initial open state to the closed state, and the initial power-on process takes tens of milliseconds; however, the process of lighting the photovoltaic module and scanning the electronic load is only ten milliseconds, that is, the switch K1 is not closed all the time during the whole process of scanning the electronic load, so that the scanned curve is incomplete.
Therefore, in the prior art, the intelligent junction box is usually made to be detachable, and when an IV scan needs to be performed, the printed circuit board is detached, and a short-circuit block is used to short-circuit the switch K1 in fig. 2. After the detection is finished, the short circuit block is taken away, the intelligent junction box is installed, and the intelligent junction box is ready to leave a factory. However, the solution is cumbersome to operate for production line workers, and the short-circuit block is easily forgotten, resulting in failure of the function of the intelligent junction box.
Disclosure of Invention
The invention provides an electrical property detection device and method of an intelligent assembly, and aims to solve the problem of complex operation in the prior art.
In order to achieve the purpose, the technical scheme provided by the application is as follows:
an electrical property detection device of an intelligent assembly is connected with the output end of the intelligent assembly through an electronic load;
the electrical property detection device of the intelligent assembly comprises: a power supply module;
the power module is used for supplying power to the intelligent junction box of the intelligent assembly before the intelligent assembly enters the IV scanning process.
Preferably, the electrical property detection device of the intelligent component further includes: the device comprises a sampling module, a controller and a controllable switch; wherein:
the sampling module is used for detecting the output voltage of the intelligent assembly and forwarding the output voltage to the controller;
the controller is used for receiving the power supply of the power supply module, judging whether the intelligent assembly enters an IV scanning process or not according to the output voltage, and controlling the controllable switch to act to disconnect the loop connection of the power supply module to the intelligent junction box if the intelligent assembly enters the IV scanning process.
Preferably, when the controller is configured to determine whether the intelligent component enters the IV scanning process according to the output voltage, the controller is specifically configured to:
judging whether the output voltage is greater than a preset threshold value or not;
and if the output voltage is greater than the preset threshold value, judging that the intelligent assembly enters an IV scanning process.
Preferably, the method further comprises the following steps: an anti-reversion module;
the anti-reverse module is used for preventing the intelligent assembly from outputting electric energy to the power supply module after the intelligent assembly enters the IV scanning process.
Preferably, the anti-reverse module, the power supply module and the controllable switch are connected in series to form a first branch circuit, and the first branch circuit and the electronic load are connected in parallel between the positive electrode and the negative electrode of the output end of the intelligent assembly;
when the controller is used for controlling the action of the controllable switch, the controller is specifically used for: and controlling the controllable switch to be converted into an open state from a closed state when the controllable switch is powered on.
Preferably, the anti-reverse module and the power module are connected in series to form a second branch circuit, the second branch circuit and the controllable switch are connected in parallel to form a third branch circuit, and the third branch circuit and the electronic load are connected in series between the positive electrode and the negative electrode of the output end of the intelligent assembly;
when the controller is used for controlling the action of the controllable switch, the controller is specifically used for: and controlling the controllable switch to be changed into a closed state from an open state when the controllable switch is powered on.
Preferably, the power supply module is a direct current voltage-stabilizing source or a switching power supply.
Preferably, the anti-reverse module is a current-limiting resistor or a diode; the conduction direction of the diode is the direction in which the power module outputs electric energy to the intelligent assembly.
An electrical property detection method of an intelligent assembly is applied to an electrical property detection device of the intelligent assembly;
the electrical property detection device of intelligence subassembly passes through electronic load and links to each other with the output of intelligence subassembly, just the electrical property detection device of intelligence subassembly includes: a power supply module;
the electrical property detection method of the intelligent assembly comprises the following steps:
the power module supplies power to the intelligent junction box of the intelligent assembly before the intelligent assembly enters the IV scanning process.
Preferably, the electrical property detection device of the intelligent component further includes: the device comprises a sampling module, a controller and a controllable switch;
the power module still includes for the intelligent terminal box power supply of intelligent subassembly when the intelligence subassembly gets into the intelligent terminal box power supply of IV scanning process:
the power supply module supplies power to the controller;
the power module still includes after the intelligence terminal box power supply for the intelligence subassembly before the intelligence subassembly gets into the IV scanning process:
the sampling module detects the output voltage of the intelligent assembly and forwards the output voltage to the controller;
the controller judges whether the intelligent assembly enters an IV scanning process or not according to the output voltage;
and if the intelligent assembly is judged to enter the IV scanning process, the controller controls the controllable switch to act so as to disconnect the loop connection of the power supply module to the intelligent junction box.
Preferably, the controller determines whether the intelligent component enters an IV scanning process according to the output voltage, including:
the controller judges whether the output voltage is greater than a preset threshold value;
and if the output voltage is greater than the preset threshold value, the controller judges that the intelligent assembly enters an IV scanning process.
Preferably, the electrical property detection device of the intelligent component further includes: an anti-reversion module;
after the controller judges whether the intelligent component enters the IV scanning process according to the output voltage, the electrical property detection method of the intelligent component further comprises the following steps: preventing the smart component from outputting power to the power module after the smart component enters the IV scanning process.
Preferably, the anti-reverse module, the power supply module and the controllable switch are connected in series to form a first branch circuit, and the first branch circuit and the electronic load are connected in parallel between the positive electrode and the negative electrode of the output end of the intelligent assembly;
the controller controls the controllable switch to act, and comprises: the controller controls the controllable switch to be changed from a closed state to an open state when the controllable switch is powered on.
Preferably, the anti-reverse module and the power module are connected in series to form a second branch circuit, the second branch circuit and the controllable switch are connected in parallel to form a third branch circuit, and the third branch circuit and the electronic load are connected in series between the positive electrode and the negative electrode of the output end of the intelligent assembly;
the controller controls the controllable switch to act, and comprises: the controller controls the controllable switch to be changed from an open state to a closed state when the controllable switch is powered on.
According to the electrical property detection device of the intelligent assembly, the electronic load is connected with the output end of the intelligent assembly, so that a power module of the detection device can replace a photovoltaic assembly to supply power to the intelligent junction box of the intelligent assembly before the intelligent assembly enters an IV scanning process, the switch in the intelligent junction box is ensured to be closed in advance, and a complete curve is obtained through scanning; therefore, the disassembling and assembling work of the intelligent junction box caused by the short circuit of the switch of the intelligent junction box in the prior art is not needed, and the problem of complex operation is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an intelligent junction box provided in the prior art;
FIG. 2 is a schematic diagram of the connection relationship of devices in electrical performance testing of the intelligent device provided by the prior art;
fig. 3a and 3b are schematic diagrams of a device connection relationship when the intelligent component provided by the embodiment of the invention performs electrical performance detection;
fig. 4a and 4b are schematic diagrams illustrating connection relationships of another device when the intelligent component provided by the embodiment of the invention performs electrical performance detection;
FIGS. 5 and 6 are schematic signal waveforms provided by another embodiment of the present invention;
fig. 7 is a flowchart of an electrical property detection method for an intelligent device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The invention provides an electrical property detection device of an intelligent assembly, which aims to solve the problem of complex operation in the prior art.
Specifically, please refer to fig. 3a and 4a, a photovoltaic module and an intelligent junction box are integrated in the intelligent module, and the intelligent junction box includes: the photovoltaic module power supply comprises a sampling module 201, a power supply 202 for taking power from the photovoltaic module, a controller 203, a driving module 204 and at least one switch K1 connected with the photovoltaic module in series.
In order to implement the electrical property detection of the intelligent component, the electrical property detection device of the intelligent component provided in this embodiment needs to be connected to the output end of the intelligent component to be detected through the electronic load R1; in concrete practical application, can wait to detect the intelligent component through pulling out the joint of inserting this electrical property detection device and changing, realize detecting respectively in a plurality of intelligent components, need not to do the change, simple and easy convenience to the circuit in the intelligent terminal box, and can not additionally increase the cost of intelligent component.
As shown in fig. 3a and 4a, the electrical property detection apparatus of the smart component includes: a power module 101, a sampling module 102, a controller 103 and a controllable switch K2.
The power module 101 may be a dc voltage regulator or a switching power supply, but is not limited thereto, as long as the power module can supply power to the intelligent junction box of the intelligent component before the intelligent component enters the IV scanning process, and the power module is within the protection scope of the present application depending on the specific application environment. In addition, the power module 101 also needs to supply power to the electrical property detection device, mainly to supply power to the controller 103, so as to ensure that the controller 103 can work normally.
After the power module 101 supplies power to the intelligent junction box, the controller 203 in the intelligent junction box is powered on, and then the switch K1 can be controlled to be closed through the driving module 204, so that the photovoltaic module has a normal output loop; once the IV scan is started, the photovoltaic module can output corresponding electrical energy after being lighted. In practical application, the environmental condition of the IV scanning is that the temperature is 25 ℃, the temperature can be floated up and down by 2 ℃, the irradiance is 1000W/m2, and the spectral distribution AM is 1.5.
The sampling module 102 may be a direct sampling module or an isolated sampling module, and is not specifically limited herein, as long as the output voltage of the intelligent component can be detected and forwarded to the controller 103, which is within the protection scope of the present application.
The controller 103 is used as a core of the whole electrical property detection device and is responsible for controlling the timing of the on and off of the controllable switch K2, in practical applications, the controllable switch K2 may be a transistor or a relay, and according to the specific selection of the controllable switch K2, a driving module may be further provided for the controllable switch K2, which is not specifically limited herein and is within the protection scope of the present application.
In order to enable the connected intelligent components to realize electrical performance detection, after the controller 103 receives power supply from the power module 101, its specific operating principle is as follows: whether the intelligent assembly enters an IV scanning process or not is judged according to the output voltage of the intelligent assembly output by the sampling module 102; if the intelligent assembly is judged to enter the IV scanning process, in order to ensure that the electrical property detection device is not affected, at this time, the action of the controllable switch K2 needs to be controlled, and the initial state of the controllable switch K2 during power-on needs to be changed, so that the loop connection of the power module 101 to the power supply of the intelligent junction box is disconnected. After the power supply module 101 is disconnected from supplying power to the intelligent junction box, since the driving module 204 in the intelligent junction box stores electric energy and can maintain the switch K1 closed for a period of time, an output loop is provided for the subsequent IV scan, so that the maximum open-circuit voltage Voc, the maximum short-circuit current Isc, the maximum power Pmax and the IV scan curve of the photovoltaic module can be obtained.
In summary, the electrical property detection device of the intelligent component provided in this embodiment is connected to the output end of the intelligent component through the electronic load R1, so that the power module 101 can replace the photovoltaic component to supply power to the intelligent junction box of the intelligent component before the intelligent component enters the IV scanning process, thereby ensuring that the switch in the intelligent junction box is closed in advance, and further scanning to obtain a complete curve; therefore, the disassembling and installing work of the intelligent junction box caused by the short circuit of the switch of the intelligent junction box in the prior art is not needed, and the problem of complicated operation is avoided; then after the intelligent assembly is judged to enter the IV scanning process, the controller 103 controls the controllable switch K2 to act, the loop connection of the power supply module 101 to the intelligent junction box is disconnected, and the electrical property detection device is not affected.
Another embodiment of the present invention further provides a specific electrical property detection apparatus for an intelligent component, on the basis of the foregoing embodiment and fig. 3a and 4a, preferably, when the controller 103 determines whether the intelligent component enters the IV scanning process according to the output voltage, the specific steps may be as follows:
judging whether the output voltage is greater than a preset threshold value or not;
and if the output voltage is greater than the preset threshold value, judging that the intelligent assembly enters an IV scanning process.
The IV scanning process may be a scanning process from an open circuit to a short circuit, or a scanning process from a short circuit to an open circuit, and is not specifically limited herein, depending on the application environment, and is within the protection scope of the present application.
Taking the example that the output voltage of the power module 101 is 20V and the open-circuit voltage of the photovoltaic module is 45V, when the electrical property detection device and the electronic load R1 are both connected to the output terminal of the smart module by inserting the connector, firstly, the power module 101 outputs 20V to the output terminal of the smart module, so that the controller 203 is powered on, and the switch K1 can be controlled to be closed by the driving module 204. When the intelligent assembly starts to be scanned in an IV mode, the photovoltaic assembly is illuminated, and the switch K1 outputs electric energy to the output end of the intelligent assembly, so that the voltage of the output end of the intelligent assembly becomes 45V, and the voltage exceeds a preset threshold value, and the controller 103 can determine that the intelligent assembly enters the IV scanning process.
In addition, in order to ensure that the 45V open circuit voltage of the photovoltaic module is reversely pumped to the power module 101 with the output voltage of 20V, the electrical property detection device should further include: and an anti-reverse module 104, as shown in fig. 3a and 4 a.
In practical applications, the anti-reverse module 104 may be a current-limiting resistor (e.g., R2 in fig. 4b, which may have a resistance value of 20 ohms) and a diode (e.g., D1 in fig. 3 b), where a conduction direction of the diode is a direction in which the power module 101 outputs power to the intelligent component; the two forms are not limited to the above two forms, and can be determined according to the specific application environment, and are within the protection scope of the present application.
The anti-reverse module 104 is used to prevent the smart component from outputting power to the power module 101 after the smart component enters the IV scanning process. Due to the existence of the anti-reverse module 104, even if the controllable switch K2 is not turned off timely due to sampling delay, the output voltage of the photovoltaic module is not allowed to be reversely fed to the power module 101.
The rest of the principle is the same as the above embodiments, and is not described in detail here.
Another embodiment of the present invention provides two other specific forms of electrical performance detection means for the intelligent components, namely, a form in parallel with the electronic load R1 (as shown in fig. 3a and 3 b), and a form in series with the electronic load R1 (as shown in fig. 4a and 4 b).
Referring to fig. 3a and 3b, the anti-reverse module 104, the power module 101 and the controllable switch K2 are connected in series to form a first branch circuit, and the first branch circuit and the electronic load R1 are connected in parallel between the positive and negative poles of the output end of the intelligent component; in this form, when the controller 103 controls the controllable switch K2 to operate, specifically: the controllable switch K2 is controlled to change from a closed state at power-up to an open state.
For fig. 3a and 3B, taking the output voltage of the power module 101 as 20V and the open-circuit voltage of the photovoltaic module as 45V as an example, when the electrical property detection device and the electronic load R1 are connected in parallel to the output end of the intelligent module (as shown in points a and B in fig. 3B) by inserting the connector, the power module 101 outputs 20V voltage to the controller 103 at time t0, and the controller 103 turns on the controllable switch K2; after the controllable switch K2 is closed, the power module 101 can output 20V voltage to the output terminal of the intelligent component, so that the controller 203 is powered on, and the switch K1 is closed after about 40mS of power-on initialization in the period from t1 to t 2; the voltage across the electronic load R1 is 20V at this time. When the intelligent component starts to be scanned in an IV mode, the photovoltaic component is illuminated at the moment of t3, electric energy is output to the output end of the intelligent component through the switch K1, the voltage of the two ends of the electronic load R1 and the voltage of the output end of the intelligent component at the moment are changed into 45V, after the voltage is detected by the sampling module 102, the controller 103 judges that the voltage exceeds a preset threshold value, the controllable switch K2 is controlled to be disconnected, and the connection between the output end of the intelligent component and the power module 101 is cut off. The switch K1 in the intelligent junction box can maintain a closed state for more than ten milliseconds due to the fact that certain energy is stored in the early stage, and an output loop consisting of an electronic load R1 and a switch K1 is provided for the subsequent IV scanning; if the IV scan is performed from open scan to short scan during the period from t3 to t4, the specific signal waveforms are as shown in fig. 5.
Referring to fig. 4a and 4b, the reverse preventing module 104 is connected in series with the power supply module 101 to form a second branch, the second branch is connected in parallel with the controllable switch K2 to form a third branch, and the third branch and the electronic load R1 are connected in series between the positive and negative poles of the output end of the intelligent component; in this form, when the controller 103 controls the controllable switch K2 to operate, specifically: the controllable switch K2 is controlled to change from an open state at power-up to a closed state.
For fig. 4a and 4B, taking the output voltage of the power module 101 as 20V and the open-circuit voltage of the photovoltaic module as 45V as an example, when the electrical property detection device and the electronic load R1 are connected in series to the output end of the intelligent module (as shown in points a and B in fig. 4B) by inserting the connector, the power module 101 outputs 20V voltage to the controller 103 at time t0, and the controller 103 turns off the control controllable switch K2 after being powered on; after the controllable switch K2 is turned off, the power module 101 can output 20V voltage, and the voltage is applied to the output end of the intelligent component through the current-limiting resistor R2 and the electronic load R1, so that the controller 203 is powered on, and the switch K1 is turned on after being powered on for initialization of about 40mS in the period from t0 to t 1; at this time, the voltage at the output terminal of the smart component (the voltage between the two points AB in fig. 4 b) is 20V, and the voltage across the electronic load R1 (the voltage between the two points AC in fig. 4 b) is 0V. When beginning to carry out the IV scan to intelligent component, the photovoltaic module receives illumination, through switch K1 output electric energy to intelligent component's output at t2 moment, and the voltage of intelligent component output this moment will become 45V, detects the back by sampling module 102, and controller 103 judges that it exceeds preset threshold value, and then control controllable switch K2 is closed, with power module 101 bypass. The switch K1 in the intelligent junction box can maintain a closed state for more than ten milliseconds due to the fact that certain energy is stored in the early stage, and an output loop consisting of an electronic load R1, a controllable switch K2 and a switch K1 is provided for the subsequent IV scanning; if the IV scan is performed from the open scan to the short scan during the period from t2 to t3, the specific signal waveforms are as shown in fig. 6.
The rest of the principle is the same as the above embodiments, and is not described in detail here.
Another embodiment of the present invention further provides an electrical property detection method for an intelligent component, which is applied to the electrical property detection apparatus shown in fig. 3a to 4 b; this electrical property detection device of intelligent component passes through electronic load R1 and links to each other with the output of intelligent component, and the electrical property detection device of intelligent component includes: a power module 101, a sampling module 102, a controller 103 and a controllable switch K2.
As shown in fig. 7, the method for detecting the electrical property of the intelligent component includes:
s101, a power supply module supplies power to a controller and supplies power to an intelligent junction box of an intelligent assembly before the intelligent assembly enters an IV scanning process;
s102, detecting the output voltage of the intelligent assembly by a sampling module and forwarding the output voltage to a controller;
s103, judging whether the intelligent assembly enters an IV scanning process or not according to the output voltage by the controller;
if the intelligent assembly is judged to enter the IV scanning process, executing the step S104;
and S104, the controller controls the controllable switch to act so as to disconnect the loop connection of the power supply module to the intelligent junction box.
Preferably, as shown in fig. 7, step S103 includes:
s301, judging whether the output voltage is larger than a preset threshold value by a controller;
if the output voltage is greater than the preset threshold, executing step S302;
s302, the controller judges that the intelligent component enters an IV scanning process.
Preferably, the electrical property detection apparatus of the smart component further includes: an anti-reversion module;
after step S103, the method for detecting an electrical property of an intelligent component further includes: after the smart component enters the IV scanning process, the smart component is prevented from outputting power to the power module.
If the anti-reverse module, the power supply module and the controllable switch are connected in series to form a first branch circuit, the first branch circuit and the electronic load are connected in parallel between the positive electrode and the negative electrode of the output end of the intelligent assembly; the controller in step S104 controls the controllable switch to act, including: the controller controls the controllable switch to be changed from a closed state to an open state when the controllable switch is electrified;
if the anti-reverse module is connected with the power supply module in series to form a second branch circuit, the second branch circuit is connected with the controllable switch in parallel to form a third branch circuit, and the third branch circuit and the electronic load are connected between the positive electrode and the negative electrode of the output end of the intelligent assembly in series; the controller in step S104 controls the controllable switch to act, including: the controller controls the controllable switch to be changed from an open state to a closed state when the controllable switch is powered on.
The rest of the principle is the same as the above embodiments, and is not described in detail here.
The embodiments of the invention are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (14)
1. The electrical property detection device of an intelligent assembly is characterized in that the electrical property detection device is connected with the output end of the intelligent assembly through an electronic load;
the electrical property detection device of the intelligent assembly comprises: a power supply module;
the power module is used for supplying power to the intelligent junction box of the intelligent assembly before the intelligent assembly enters the IV scanning process.
2. The electrical property detection device of an intelligent component according to claim 1, further comprising: the device comprises a sampling module, a controller and a controllable switch; wherein:
the sampling module is used for detecting the output voltage of the intelligent assembly and forwarding the output voltage to the controller;
the controller is used for receiving the power supply of the power supply module, judging whether the intelligent assembly enters an IV scanning process or not according to the output voltage, and controlling the controllable switch to act to disconnect the loop connection of the power supply module to the intelligent junction box if the intelligent assembly enters the IV scanning process.
3. The electrical property detection device of the intelligent component according to claim 2, wherein the controller is configured to, when determining whether the intelligent component enters an IV scanning process according to the output voltage, specifically:
judging whether the output voltage is greater than a preset threshold value or not;
and if the output voltage is greater than the preset threshold value, judging that the intelligent assembly enters an IV scanning process.
4. The electrical property detection apparatus of the smart component as claimed in claim 2 or 3, further comprising: an anti-reversion module;
the anti-reverse module is used for preventing the intelligent assembly from outputting electric energy to the power supply module after the intelligent assembly enters the IV scanning process.
5. The electrical property detection device of the intelligent assembly according to claim 4, wherein the anti-reverse module, the power supply module and the controllable switch are connected in series to form a first branch circuit, and the first branch circuit and the electronic load are connected in parallel between the positive electrode and the negative electrode of the output end of the intelligent assembly;
when the controller is used for controlling the action of the controllable switch, the controller is specifically used for: and controlling the controllable switch to be converted into an open state from a closed state when the controllable switch is powered on.
6. The electrical property detection device of the intelligent assembly according to claim 4, wherein the anti-reverse module is connected in series with the power supply module to form a second branch, the second branch is connected in parallel with the controllable switch to form a third branch, and the third branch and the electronic load are connected in series between the positive electrode and the negative electrode of the output end of the intelligent assembly;
when the controller is used for controlling the action of the controllable switch, the controller is specifically used for: and controlling the controllable switch to be changed into a closed state from an open state when the controllable switch is powered on.
7. The electrical performance detection device of the intelligent component according to claim 1, wherein the power supply module is a dc voltage regulator or a switching power supply.
8. The electrical property detection device of the intelligent component according to claim 4, wherein the anti-reverse module is a current limiting resistor or a diode; the conduction direction of the diode is the direction in which the power module outputs electric energy to the intelligent assembly.
9. The electrical property detection method of a intellectual assembly, characterized by, apply to the electrical property detection device of the intellectual assembly;
the electrical property detection device of intelligence subassembly passes through electronic load and links to each other with the output of intelligence subassembly, just the electrical property detection device of intelligence subassembly includes: a power supply module;
the electrical property detection method of the intelligent assembly comprises the following steps:
the power module supplies power to the intelligent junction box of the intelligent assembly before the intelligent assembly enters the IV scanning process.
10. The electrical property detection method of an intelligent component according to claim 9, wherein the electrical property detection apparatus of an intelligent component further comprises: the device comprises a sampling module, a controller and a controllable switch;
the power module still includes for the intelligent terminal box power supply of intelligent subassembly when the intelligence subassembly gets into the intelligent terminal box power supply of IV scanning process:
the power supply module supplies power to the controller;
the power module still includes after the intelligence terminal box power supply for the intelligence subassembly before the intelligence subassembly gets into the IV scanning process:
the sampling module detects the output voltage of the intelligent assembly and forwards the output voltage to the controller;
the controller judges whether the intelligent assembly enters an IV scanning process or not according to the output voltage;
and if the intelligent assembly is judged to enter the IV scanning process, the controller controls the controllable switch to act so as to disconnect the loop connection of the power supply module to the intelligent junction box.
11. The method for detecting the electrical property of the intelligent component according to claim 10, wherein the controller determines whether the intelligent component enters an IV scanning process according to the output voltage, and comprises:
the controller judges whether the output voltage is greater than a preset threshold value;
and if the output voltage is greater than the preset threshold value, the controller judges that the intelligent assembly enters an IV scanning process.
12. The electrical property detection method of an intelligent component according to claim 10 or 11, wherein the electrical property detection apparatus of an intelligent component further comprises: an anti-reversion module;
after the controller judges whether the intelligent component enters the IV scanning process according to the output voltage, the electrical property detection method of the intelligent component further comprises the following steps: preventing the smart component from outputting power to the power module after the smart component enters the IV scanning process.
13. The electrical property detection method of the intelligent assembly according to claim 12, wherein the anti-reverse module, the power supply module and the controllable switch are connected in series to form a first branch circuit, and the first branch circuit and the electronic load are connected in parallel between a positive electrode and a negative electrode of an output end of the intelligent assembly;
the controller controls the controllable switch to act, and comprises: the controller controls the controllable switch to be changed from a closed state to an open state when the controllable switch is powered on.
14. The electrical property detection method of the intelligent component according to claim 12, wherein the anti-reverse module is connected in series with the power module to form a second branch, the second branch is connected in parallel with the controllable switch to form a third branch, and the third branch and the electronic load are connected in series between the positive and negative poles of the output end of the intelligent component;
the controller controls the controllable switch to act, and comprises: the controller controls the controllable switch to be changed from an open state to a closed state when the controllable switch is powered on.
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| CN113203963A (en) * | 2021-05-12 | 2021-08-03 | 通威太阳能（合肥）有限公司 | Photovoltaic module IV test method |
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