Optical storage all-in-one machine test system and control method thereof

Abstract

The invention discloses an optical storage all-in-one machine testing system and a control method thereof.The optical storage all-in-one machine testing system comprises at least one twin trawling testing module, the twin trawling testing module comprises two testing circuits, each testing circuit is connected with an optical storage all-in-one machine, and each optical storage all-in-one machine comprises a photovoltaic power generation module, a battery module and an inverter; each test circuit comprises a circuit breaker, a first contactor, a second contactor and a one-way direct-current power supply, the first ends of the circuit breakers of the two test circuits are connected and are connected with a power grid, and the second ends of the circuit breakers are respectively connected with the first ends of the first contactor and the second contactor; the second end of the first contactor and the second end of the second contactor are connected with the alternating current end and the standby power end of the corresponding optical storage all-in-one machine respectively, and the second end of the second contactor and the standby power end of the corresponding optical storage all-in-one machine are connected with the photovoltaic power generation end of the optical storage all-in-one machine through a one-way direct current power source. And the battery ends of the optical storage all-in-one machines electrically connected with the two test circuits are connected.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated photovoltaic and energy storage machines, and particularly to an integrated photovoltaic and energy storage machine test system and a control method therefor. Background Art

[0002] An integrated photovoltaic and energy storage machine can be installed with photovoltaic modules and batteries to perform photovoltaic power generation and energy storage, so that it can discharge through the stored batteries in case of insufficient light or at night to achieve continuous household power supply. To ensure product quality, production tests need to be carried out on the integrated photovoltaic and energy storage machine. However, in existing test schemes, the test object usually needs to be moved and replaced multiple times, resulting in low test efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an integrated photovoltaic and energy storage machine test system and a control method therefor, so as to reduce the replacement frequency of the test object and improve the test efficiency.

[0004] In a first aspect, the present invention provides an integrated photovoltaic and energy storage machine test system, including at least a pair of drag test modules. The drag test module includes two test circuits, and each test circuit is used to be connected to an integrated photovoltaic and energy storage machine to test the integrated photovoltaic and energy storage machine. The integrated photovoltaic and energy storage machine includes a photovoltaic power generation module, a battery module, and an inverter. The photovoltaic power generation module and the battery module are connected to the inverter. The test circuit includes a circuit breaker, a first contactor, a second contactor, and a unidirectional DC power supply. The first end of the circuit breaker is connected to the power grid, the second end of the circuit breaker is respectively connected to the first ends of the first contactor and the second contactor. The second end of the first contactor is connected to the AC power terminal of the corresponding integrated photovoltaic and energy storage machine. The second end of the second contactor is connected to the standby power terminal of the corresponding integrated photovoltaic and energy storage machine. The second end of the second contactor and the standby power terminal of the corresponding integrated photovoltaic and energy storage machine are connected to the photovoltaic power generation terminal of the integrated photovoltaic and energy storage machine through the unidirectional DC power supply. The battery terminals of the integrated photovoltaic and energy storage machines electrically connected by the two test circuits are connected, and the first ends of the circuit breakers of the two test circuits are connected.

[0005] Second aspect, the present invention further provides a control method for a photovoltaic and energy storage integrated machine test system, which is applied to the above-mentioned photovoltaic and energy storage integrated machine test system. The two test circuits of the counter-rotating test module are respectively a first test circuit and a second test circuit. The control method of the photovoltaic and energy storage integrated machine test system includes the following steps: supplying power to the AC terminal of the photovoltaic and energy storage integrated machine connected to the first test circuit of the counter-rotating test module; supplying power to the AC terminal of the photovoltaic and energy storage integrated machine connected to the second test circuit of the counter-rotating test module; controlling two photovoltaic and energy storage integrated machines respectively connected to the first test circuit and the second test circuit of the counter-rotating test module to charge and discharge according to power parameters and perform initial aging tests; setting the working parameters of the photovoltaic and energy storage integrated machine connected to the first test circuit and the photovoltaic and energy storage integrated machine connected to the second test circuit in sequence according to the working modes of the photovoltaic and energy storage integrated machine connected to the first test circuit and the photovoltaic and energy storage integrated machine connected to the second test circuit corresponding to each test rule in the preset test strategy, and controlling the first test circuit and the second test circuit to work; wherein, the working parameters include the output parameters of the standby power terminal.

[0006] The beneficial technical effects of the present invention are as follows: The photovoltaic and energy storage integrated machine test system of the present invention realizes that only by controlling the counter-rotating test module to adjust the operation of the test circuit and set the corresponding parameters can the test object be switched by setting at least one counter-rotating test module including two test circuits, and each test circuit is used to be connected to a photovoltaic and energy storage integrated machine for testing. This reduces the frequent movement and replacement of the test object, improves the test efficiency. The two photovoltaic and energy storage integrated machines connected to the same counter-rotating test module can interact with each other to perform aging operation of the effective rated current, and can exchange roles with each other during the test, which is convenient for more comprehensive testing of the photovoltaic and energy storage integrated machine. It can also replace the devices required for testing, which is beneficial to reducing the test cost. Moreover, the battery terminals of the photovoltaic and energy storage integrated machines electrically connected to the two test circuits are connected, which can realize energy recycling, reduce overall loss, and save electricity. The control method of the photovoltaic and energy storage integrated machine test system of the present invention also has the above functions. Description of the Drawings

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0008] Figure 1 It is a framework schematic diagram of the photovoltaic and energy storage integrated machine test system provided by the embodiment of the present invention;

[0009] Figure 2 It is a circuit schematic diagram when the counter-rotating test module of the photovoltaic and energy storage integrated machine test system provided by the embodiment of the present invention is specifically applied;

[0010] Figure 3 Schematic flow chart of the control method for the photovoltaic and energy storage integrated machine test system provided by the embodiment of the present invention;

[0011] Figure 4 Circuit diagram of the counter-dragging test module of the photovoltaic and energy storage integrated machine test system provided by the present invention when the test rule is the first test rule;

[0012] Figure 5 Circuit diagram of the counter-dragging test module of the photovoltaic and energy storage integrated machine test system provided by the present invention when the test rule is the third test rule. Detailed implementation manners

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0014] Please refer to Figure 1 and Figure 2 , Figure 1It is a schematic framework diagram of the photovoltaic and energy storage integrated machine test system provided by the embodiments of the present invention. The photovoltaic and energy storage integrated machine test system includes at least a pair of back-to-back test modules 11. The back-to-back test module 11 includes two test circuits 111. Each test circuit 111 is used to be connected to a photovoltaic and energy storage integrated machine 20 to test the photovoltaic and energy storage integrated machine 20. The photovoltaic and energy storage integrated machine 20 includes a photovoltaic power generation module 21, a battery module 22, and an inverter 23. The photovoltaic power generation module 21 and the battery module 22 are connected to the inverter 23. The test circuit 111 includes a circuit breaker QA, a first contactor KA, a second contactor KB, and a unidirectional DC power supply 112. The first end of the circuit breaker QA is connected to the power grid. The second end of the circuit breaker QA is respectively connected to the first ends of the first contactor KA and the second contactor KB. The second end of the first contactor KA is connected to the AC power terminal AC of the corresponding photovoltaic and energy storage integrated machine 20. The AC power terminal AC is connected to the inverter 23 to supply power to the inverter 23 of the corresponding photovoltaic and energy storage integrated machine 20 through the AC power terminal AC. The second end of the second contactor KB is connected to the backup power terminal BACKUP of the corresponding photovoltaic and energy storage integrated machine 20. The backup power terminal BACKUP is connected to the inverter 23 to output the electrical signal processed by the inverter 23 through the backup power terminal BACKUP. The second end of the second contactor KB and the backup power terminal BACKUP of the corresponding photovoltaic and energy storage integrated machine 20 are connected to the photovoltaic power generation terminal PV of this photovoltaic and energy storage integrated machine 20 through the unidirectional DC power supply 112. The photovoltaic power generation terminal PV is connected to the photovoltaic power generation module 21 to supply power to the photovoltaic power generation module 21 of the corresponding photovoltaic and energy storage integrated machine through the photovoltaic power generation terminal PV. The photovoltaic power generation module 21 includes a photovoltaic power generation DC / DC circuit. The battery module 22 includes a battery DC / DC circuit. The photovoltaic power generation DC / DC circuit is respectively connected to the battery DC / DC circuit and the inverter 23. The battery DC / DC circuit is connected to the inverter 23. The battery terminals BAT of the photovoltaic and energy storage integrated machines electrically connected by the two test circuits 111 are connected. The first ends of the circuit breakers QA of the two test circuits 111 are connected.

[0015] One end of the circuit breaker QA can be connected to the power grid through an isolation transformer. By controlling the operation of the corresponding test circuit 111, the operation of the photovoltaic power generation module 21, the battery module 22, and the inverter 23 of the corresponding connected integrated energy storage and photovoltaic device 20 can be controlled, so as to achieve a comprehensive detection of the photovoltaic power generation module 21, the battery module 22, and the inverter 23 of the integrated energy storage and photovoltaic device 20, and enable the integrated energy storage and photovoltaic device 20 to perform aging operation with an effective rated current. The two test circuits 111 are the same and the connections between the test circuits 111 and the corresponding integrated energy storage and photovoltaic devices 20 are the same, so that the test object can be changed by directly controlling the alternating change of the connection circuit between the corresponding test circuit 111 and the integrated energy storage and photovoltaic device 20 without moving and replacing the test object. The integrated energy storage and photovoltaic device test system is provided with at least one counter-rotating test module 11 including two test circuits 111, and each test circuit 111 is used to be connected to an integrated energy storage and photovoltaic device 20 to test the integrated energy storage and photovoltaic device 20. By controlling the counter-rotating test module 11 to adjust the operation of the test circuit 111 and setting corresponding parameters, the test object can be switched, reducing the frequent movement and replacement of the test object, improving the test efficiency. The two integrated energy storage and photovoltaic devices 20 connected to the same counter-rotating test module 11 can interact with each other to perform aging operation with an effective rated current, and can exchange roles with each other during the test, which is convenient for a more comprehensive test of the integrated energy storage and photovoltaic device 20, and can also replace the devices required for the test, which is beneficial to reducing the test cost. Moreover, the battery terminals BAT of the integrated energy storage and photovoltaic devices 20 electrically connected to the two test circuits 111 are connected, which can realize energy recycling, reduce the overall loss, and save electricity.

[0016] Specifically, the integrated PV energy storage system testing system includes multiple workstations to be tested and a host computer. The workstations to be tested are used to place the integrated PV energy storage system 20. The host computer is connected to the integrated PV energy storage system 20 placed on the workstations to be tested to obtain the power parameters and model information of the integrated PV energy storage system 20. The host computer controls the workstations to be tested corresponding to two integrated PV energy storage systems 20 with the same power parameters and model information to move into the same pair of tow test modules 11, so that the test circuit 111 of the pair of tow test modules 11 is connected to the corresponding integrated PV energy storage system 20. Multiple workstations to be tested can respectively provide placement for integrated PV energy storage systems 20 with different power parameters and model information. And the information of the workstations to be tested and the power parameters and model information of the integrated PV energy storage system 20 placed thereon are uploaded and recorded in the host computer. The host computer can, according to the first-in, first-out rule, sequentially move the workstation to be tested with the integrated PV energy storage system 20 with a previous serial number to the pair of tow test modules 11 and connect it to one of the test circuits 111, and match, according to the power parameters and model information of the integrated PV energy storage system 20, an integrated PV energy storage system 20 with the same power parameters and model information as the integrated PV energy storage system 20 that has entered the pair of tow test modules 11 among the integrated PV energy storage systems 20 on the workstations to be tested that have not entered the pair of tow test modules 11, and move the corresponding workstation to be tested to make the corresponding integrated PV energy storage system 20 enter the other test circuit 111 of the corresponding pair of tow test modules 11, so as to ensure that the power parameters and model information of the integrated PV energy storage systems 20 connected to the two test circuits 111 in the same pair of tow test modules 11 are the same, and prevent the problem of test failure caused by insufficient aging loading power or insufficient discharge power due to different power parameters and model information of the integrated PV energy storage systems 20 connected to the two test circuits 111 in the same pair of tow test modules 11, which may cause a body failure.

[0017] Specifically, the integrated PV energy storage system testing system further includes a workstation driving mechanism. The workstation driving mechanism is used to drive the movement of the workstations to be tested. The workstation driving mechanism is connected to the host computer to drive the movement of the workstations to be tested according to the control of the host computer. Of course, in some embodiments, the workstation driving mechanism can be a palletizer to move the workstation to be tested to the corresponding pair of tow test modules 11 according to the control of the host computer.

[0018] Based on the above design, during operation, the host computer sequentially obtains and records the information of the workstations to be tested and the power parameter and model information of the corresponding integrated energy storage and photovoltaic unit 20 placed on the workstations to be tested according to the serial numbers of the workstations to be tested. According to the first-in, first-out rule, the host computer sequentially moves the workstations to be tested with the integrated energy storage and photovoltaic unit 20 placed in the front to the drag test module 11 and connects them to one of the test circuits 111, and matches the integrated energy storage and photovoltaic units with the same power parameter and model information as those of the integrated energy storage and photovoltaic unit that has entered the drag test module 11 among the integrated energy storage and photovoltaic units on the workstations to be tested that have not entered the drag test module 11 according to the power parameter and model information of the integrated energy storage and photovoltaic unit 20, and moves the corresponding workstations to be tested to make the corresponding integrated energy storage and photovoltaic unit 20 enter the other test circuit 111 of the corresponding drag test module 11, and controls the test circuit 111 of the drag test module 11 and the corresponding integrated energy storage and photovoltaic unit 20 to work according to the preset test strategy to complete the corresponding test.

[0019] Please refer to Figure 3 as shown in Figure 3 FIG. is a schematic flowchart of a control method for an integrated energy storage and photovoltaic unit test system provided by an embodiment of the present invention. The control method for the integrated energy storage and photovoltaic unit test system is applied to the above integrated energy storage and photovoltaic unit test system. The two test circuits of the drag test module are respectively a first test circuit and a second test circuit. The control method for the integrated energy storage and photovoltaic unit test system includes the following steps:

[0020] Step S10: Supply power to the AC terminal of the integrated energy storage and photovoltaic unit connected to the first test circuit of the drag test module; wherein, by supplying power to the AC terminal of the integrated energy storage and photovoltaic unit, communication connection judgment can be performed to ensure the reliability of test control, facilitate issuing instructions during the subsequent test process, and the corresponding integrated energy storage and photovoltaic unit enters the waiting state for pairing.

[0021] Step S20: Supply power to the AC terminal of the integrated energy storage and photovoltaic unit connected to the second test circuit of the drag test module;

[0022] Step S30: Control the two integrated energy storage and photovoltaic units respectively connected to the first test circuit and the second test circuit of the drag test module to charge and discharge according to the power parameter and perform an initial aging test; by detecting the operation of the integrated energy storage and photovoltaic unit within a preset time, the normal progress of the subsequent test can be ensured, and the reliability of the test can be improved.

[0023] Step S40: According to the working modes of the integrated energy storage and photovoltaic unit connected to the first test circuit and the integrated energy storage and photovoltaic unit connected to the second test circuit corresponding to each test rule in the preset test strategy, sequentially set the working parameters of the integrated energy storage and photovoltaic unit connected to the first test circuit and the integrated energy storage and photovoltaic unit connected to the second test circuit and control the first test circuit and the second test circuit to work; wherein, the working parameters include the output parameters of the backup power terminal.

[0024] Among them, the two test circuits are the same and the connections between the test circuits and the corresponding integrated energy storage and photovoltaic systems are the same, so that the test object can be changed by directly controlling the alternating change of the connection circuits between the corresponding test circuits and the integrated energy storage and photovoltaic systems without moving and replacing the test object. The control method of the integrated energy storage and photovoltaic system test system sequentially sets the operating parameters of the integrated energy storage and photovoltaic system connected to the first test circuit and the second test circuit of the counter-rotating test module according to the operating modes of the integrated energy storage and photovoltaic systems connected to the first test circuit and the second test circuit corresponding to each test rule in the preset test strategy, and controls the operation of the first test circuit and the second test circuit of the counter-rotating test module, so as to realize that only by controlling the counter-rotating test module to adjust the operation of the test circuit and set the corresponding parameters can the test object be switched, reducing the frequent movement and replacement of the test object, improving the test efficiency. The two integrated energy storage and photovoltaic systems connected to the same counter-rotating test module can interact with each other to carry out aging operation of the effective rated current, and can exchange roles with each other during the test, which is convenient for more comprehensive testing of the integrated energy storage and photovoltaic system. It can also replace the devices required for testing, which is beneficial to reducing the test cost.

[0025] Specifically, after the step S10, the following is further included:

[0026] Match the corresponding integrated energy storage and photovoltaic system according to the power parameter and model information of the integrated energy storage and photovoltaic system connected to the first test circuit of the counter-rotating test module, and connect it to the second test circuit of the counter-rotating test module, so as to ensure that the power parameters and model information of the integrated energy storage and photovoltaic systems connected to the two test circuits in the same counter-rotating test module are the same, and prevent the problem of test failure caused by insufficient aging load power or insufficient discharge power due to different power parameters and model information of the integrated energy storage and photovoltaic systems connected to the two test circuits of the same counter-rotating test module, which may cause a body failure.

[0027] Specifically, the preset test strategy includes a first test rule, a second test rule, a third test rule, and a fourth test rule. The first test rule is that the photovoltaic power generation module of the integrated energy storage and photovoltaic system connected to the first test circuit operates and the battery module discharges, while the battery module of the integrated energy storage and photovoltaic system connected to the second test circuit charges and the inverter operates. The second test rule is that the photovoltaic power generation module of the integrated energy storage and photovoltaic system connected to the second test circuit operates and the battery module discharges, while the battery module of the integrated energy storage and photovoltaic system connected to the first test circuit charges and the inverter operates. The third test rule is that the inverter of the integrated energy storage and photovoltaic system connected to the second test circuit operates and the battery module charges and discharges, while the battery module of the integrated energy storage and photovoltaic system connected to the first test circuit charges and the inverter operates. The fourth test rule is that the inverter of the integrated energy storage and photovoltaic system connected to the first test circuit operates and the battery module charges and discharges, while the battery module of the integrated energy storage and photovoltaic system connected to the second test circuit charges and the inverter operates. Among them, the logic of the first test rule and the second test rule is opposite, and the logic of the third test rule and the fourth test rule is opposite, realizing the exchange of the test objects.

[0028] Preferably, when the test rule is the first test rule, the step of controlling the first test circuit and the second test circuit to operate in step S40 is specifically as follows:

[0029] Control the circuit breaker and the first contactor of the first test circuit to close and control the second contactor of the first test circuit to open, so that the inverter of the corresponding integrated energy storage and photovoltaic system obtains an electrical signal through the AC terminal. Control the grid-side relay of the integrated energy storage and photovoltaic system connected to the first test circuit to close, so that the electrical signal flows from the AC terminal into the grid-side relay and then is transmitted to the standby power terminal, and the standby power terminal outputs an electrical signal to the unidirectional DC power supply of the first test circuit;

[0030] Control the unidirectional DC power supply of the first test circuit to operate to supply power to the photovoltaic power generation DC / DC circuit of the photovoltaic power generation module of the integrated energy storage and photovoltaic system through the photovoltaic power generation terminal of the corresponding integrated energy storage and photovoltaic system, and control the integrated energy storage and photovoltaic system to operate, so that the battery terminal of the integrated energy storage and photovoltaic system outputs direct current to the battery terminal of the integrated energy storage and photovoltaic system connected to the second test circuit;

[0031] Control the integrated energy storage and photovoltaic system connected to the second test circuit to operate and load the rated power value, so that the battery DC / DC circuit of the battery module of the integrated energy storage and photovoltaic system connected to the second test circuit operates to output an electrical signal, which is processed by the inverter and then output through the standby power terminal;

[0032] Control the circuit breaker and the second contactor of the second test circuit to close and control the first contactor of the second test circuit to open, so that the electrical signal output from the standby power terminal of the corresponding integrated energy storage and photovoltaic system is transmitted to the AC terminal of the integrated energy storage and photovoltaic system connected to the first test circuit.

[0033] Preferably, when the test rule is the second test rule, the step of controlling the first test circuit and the second test circuit to work in step S40 is specifically as follows:

[0034] Control the circuit breaker and the first contactor of the second test circuit to close and control the second contactor of the second test circuit to open, so that the inverter of the corresponding integrated photovoltaic and energy storage unit receives an electrical signal through the AC power terminal, control the grid-side relay of the integrated photovoltaic and energy storage unit connected to the second test circuit to close, so that the electrical signal flows from the AC power terminal into the grid-side relay and then is transmitted to the backup power terminal, and the backup power terminal outputs an electrical signal to the unidirectional DC power supply of the second test circuit;

[0035] Control the unidirectional DC power supply of the second test circuit to work to supply power to the photovoltaic power generation DC / DC circuit of the photovoltaic power generation module of the integrated photovoltaic and energy storage unit through the photovoltaic power generation terminal of the corresponding integrated photovoltaic and energy storage unit, control the integrated photovoltaic and energy storage unit to work, so that the battery terminal of the integrated photovoltaic and energy storage unit outputs direct current to the battery terminal of the integrated photovoltaic and energy storage unit connected to the first test circuit;

[0036] Control the integrated photovoltaic and energy storage unit connected to the first test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the integrated photovoltaic and energy storage unit connected to the first test circuit works to output an electrical signal, which is processed by the inverter and then output through the backup power terminal;

[0037] Control the circuit breaker and the second contactor of the first test circuit to close and control the first contactor of the first test circuit to open, so that the electrical signal output from the backup power terminal of the corresponding integrated photovoltaic and energy storage unit is transmitted to the AC power terminal of the integrated photovoltaic and energy storage unit connected to the second test circuit of the counter-dragging test module.

[0038] Among them, the combined application of the first test rule and the second test rule can be used to detect the discharge function of the integrated photovoltaic and energy storage unit, and the photovoltaic power generation DC / DC circuit of the photovoltaic power generation module, the battery DC / DC circuit of the battery module, the power devices and terminals of the inverter can all be fully tested. The power-on function of the AC power terminal of the integrated photovoltaic and energy storage unit is also verified, and the grid-side relay between the AC power terminal and the backup power terminal of the integrated photovoltaic and energy storage unit is tested to complete the grid-connected aging test. The two integrated photovoltaic and energy storage units can be used as the load power consumption of another integrated photovoltaic and energy storage unit to simulate the off-grid load aging test.

[0039] Preferably, when the test rule is the third test rule, the step of controlling the first test circuit and the second test circuit to work in step S40 is specifically as follows:

[0040] Control the circuit breaker and the first contactor of the second test circuit to close and control the second contactor of the second test circuit to open. Control the circuit breaker and the second contactor of the first test circuit to close and control the first contactor of the first test circuit to close, so that the inverter of the integrated energy storage and photovoltaic unit connected to the second test circuit receives an electrical signal through the AC power terminal. Control the battery module of the integrated energy storage and photovoltaic unit connected to the second test circuit to charge and perform constant voltage output discharge, so that the battery DC / DC circuit of the inverter and the battery module of the integrated energy storage and photovoltaic unit connected to the second test circuit works, and the battery terminal of the integrated energy storage and photovoltaic unit outputs direct current to the battery terminal of the integrated energy storage and photovoltaic unit connected to the first test circuit;

[0041] Control the integrated energy storage and photovoltaic unit connected to the first test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the integrated energy storage and photovoltaic unit connected to the first test circuit works, and outputs an electrical signal to the inverter for processing and then outputs it through the backup power terminal and transmits it to the AC power terminal of the integrated energy storage and photovoltaic unit connected to the second test circuit.

[0042] Preferably, when the test rule is the fourth test rule, the step of controlling the first test circuit and the second test circuit to work in step S40 is specifically as follows:

[0043] Control the circuit breaker and the first contactor of the first test circuit to close and control the second contactor of the first test circuit to open. Control the circuit breaker and the second contactor of the second test circuit to close and control the first contactor of the second test circuit to open, so that the inverter of the integrated energy storage and photovoltaic unit connected to the first test circuit receives an electrical signal through the AC power terminal. Control the battery module of the integrated energy storage and photovoltaic unit connected to the first test circuit to charge and perform constant voltage output discharge, so that the battery DC / DC circuit of the inverter and the battery module of the integrated energy storage and photovoltaic unit connected to the first test circuit works, and the battery terminal of the integrated energy storage and photovoltaic unit outputs direct current to the battery terminal of the integrated energy storage and photovoltaic unit connected to the second test circuit;

[0044] Control the integrated energy storage and photovoltaic unit connected to the second test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the integrated energy storage and photovoltaic unit connected to the second test circuit works, and outputs an electrical signal to the inverter for processing and then outputs it through the backup power terminal and transmits it to the AC power terminal of the integrated energy storage and photovoltaic unit connected to the first test circuit.

[0045] Among them, the combined application of the third test rule and the fourth test rule can be used to detect the charge and discharge function of the integrated energy storage and photovoltaic unit, and the battery DC / DC circuit of the battery module, the power devices and terminals of the inverter can be fully tested, and the power-on function of the AC power terminal of the integrated energy storage and photovoltaic unit is also verified. The two integrated energy storage and photovoltaic units can be used as the load power consumption of another integrated energy storage and photovoltaic unit to realize the simulation of off-grid load aging test.

[0046] When the test rule is the first test rule, the working process circuit of the back-to-back test module is as follows Figure 4 shown. When the test rule is the third test rule, the working process circuit of the back-to-back test module is as follows Figure 5 shown, Figure 4 and Figure 5 the dashed arrows in which indicate the direction of electric signal flow. Figure 4 and Figure 5 The first test circuit and the second test circuit in are respectively denoted as 111a and 111b.

[0047] In summary, the integrated energy storage and photovoltaic testing system of the present invention realizes switching of test objects by setting at least one back-to-back test module including two test circuits, and each test circuit is used to be connected to an integrated energy storage and photovoltaic device for testing the integrated energy storage and photovoltaic device, so that only by controlling the back-to-back test module to adjust the operation of the test circuit and setting corresponding parameters can the test object be switched, reducing the frequent movement and replacement of the test object, improving the test efficiency. The two integrated energy storage and photovoltaic devices connected to the same back-to-back test module can interact with each other to perform aging operation of the effective rated current, and can exchange roles with each other during the test, facilitating a more comprehensive test of the integrated energy storage and photovoltaic device. It can also replace the devices required for testing, which is beneficial to reducing the test cost. Moreover, the battery terminals of the integrated energy storage and photovoltaic devices electrically connected by the two test circuits are connected, enabling energy recycling, reducing overall losses, and saving electricity. The control method of the integrated energy storage and photovoltaic testing system of the present invention also has the above functions.

[0048] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or replacements, and these modifications or replacements should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A test system for an integrated optical storage device, characterized in that: It includes at least one pair of drag test modules, and the pair of drag test modules includes two test circuits, each of the test circuits is used to be connected to a photovoltaic and storage integrated machine to test the photovoltaic and storage integrated machine, the photovoltaic and storage integrated machine includes a photovoltaic power generation module, a battery module and an inverter, the photovoltaic power generation module and the battery module are connected to the inverter, the test circuit includes a circuit breaker, a first contactor, a second contactor and a unidirectional DC power supply, the first end of the circuit breaker is connected to the power grid, the second end of the circuit breaker is respectively connected to the first ends of the first contactor and the second contactor, the second end of the first contactor is connected to the AC power end of the corresponding photovoltaic and storage integrated machine, the second end of the second contactor is connected to the backup power end of the corresponding photovoltaic and storage integrated machine, the second end of the second contactor and the backup power end of the corresponding photovoltaic and storage integrated machine are connected to the photovoltaic power generation end of the photovoltaic and storage integrated machine through the unidirectional DC power supply, the battery end of the photovoltaic and storage integrated machine electrically connected to the two test circuits is connected, and the first ends of the circuit breakers of the two test circuits are connected.

2. The optical storage integrated machine test system according to claim 1, characterized in that: The optical-storage integrated machine testing system comprises a plurality of stations to be tested and a host computer. The stations to be tested are used to place the optical-storage integrated machines, and the host computer is connected to the optical-storage integrated machines placed on the stations to be tested.

3. The optical storage integrated machine test system according to claim 2, characterized in that: The optical storage integrated machine testing system further includes a station driving mechanism, which is used to drive the station to be tested to move. The station driving mechanism is connected to the host computer to drive the station to be tested to move according to the control of the host computer.

4. A control method for an optical storage integrated machine test system, characterized in that: Applied to the integrated optical storage device test system according to any one of claims 1 to 3, the two test circuits of the pair-to-pull test module are respectively a first test circuit and a second test circuit, and the control method of the integrated optical storage device test system comprises the following steps: Supplying power to an AC power terminal of the optical storage integrated machine connected to the first test circuit of the towing test module; Supplying power to an AC power terminal of the optical storage integrated machine connected to the second test circuit of the towing test module; Control two integrated optical and storage devices respectively connected to the first test circuit and the second test circuit of the pair-to-pull test module to charge and discharge according to power parameters and perform an initial aging test; According to the working modes of the optical-storage integrated machine connected to the first test circuit and the optical-storage integrated machine connected to the second test circuit corresponding to each test rule in the preset test strategy, the working parameters of the optical-storage integrated machine connected to the first test circuit and the optical-storage integrated machine connected to the second test circuit are set in sequence and the operation of the first test circuit and the second test circuit are controlled; wherein the working parameters include the output parameters of the standby power terminal.

5. The control method of the optical storage integrated machine test system according to claim 4, characterized in that: After the step of supplying power to the AC power terminal of the optical storage integrated machine connected to the first test circuit of the towing test module, the method further includes: According to the power parameters and model information of the integrated optical-storage device connected to the first test circuit of the pair-to-pull test module, the corresponding integrated optical-storage device is matched and connected to the second test circuit of the pair-to-pull test module.

6. The control method of the optical storage integrated machine test system according to claim 4, characterized in that: The preset test strategy includes a first test rule, a second test rule, a third test rule and a fourth test rule. The first test rule is that the photovoltaic power generation module of the photovoltaic and storage integrated machine connected to the first test circuit works and the battery module discharges, while the battery module of the photovoltaic and storage integrated machine connected to the second test circuit is charged and the inverter works. The second test rule is that the photovoltaic power generation module of the photovoltaic and storage integrated machine connected to the second test circuit works and the battery module discharges, while the battery module of the photovoltaic and storage integrated machine connected to the first test circuit is charged and the inverter works. The third test rule is that the inverter of the photovoltaic and storage integrated machine connected to the second test circuit works and the battery module charges and discharges, while the battery module of the photovoltaic and storage integrated machine connected to the first test circuit is charged and the inverter works. The fourth test rule is that the inverter of the photovoltaic and storage integrated machine connected to the first test circuit works and the battery module charges and discharges, while the battery module of the photovoltaic and storage integrated machine connected to the second test circuit is charged and the inverter works.

7. The control method of the optical storage integrated machine test system according to claim 6, characterized in that: When the test rule is the first test rule, the step of controlling the first test circuit and the second test circuit to work is specifically: Control the circuit breaker and the first contactor of the first test circuit to close and control the second contactor of the first test circuit to open, so that the inverter of the corresponding integrated optical storage device receives an electrical signal through the AC power terminal and the standby power terminal outputs an electrical signal to the unidirectional DC power supply of the first test circuit; Control the unidirectional DC power supply of the first test circuit to work, so as to supply power to the photovoltaic power generation DC / DC circuit of the photovoltaic power generation module of the photovoltaic power generation module through the corresponding photovoltaic power generation terminal of the photovoltaic power generation module, and control the photovoltaic power generation module to work, so that the battery terminal of the photovoltaic power generation module outputs DC power to the battery terminal of the photovoltaic power generation module connected to the second test circuit; Control the photovoltaic and storage integrated machine connected to the second test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the photovoltaic and storage integrated machine connected to the second test circuit works to output an electrical signal to the inverter for processing and then output through the standby power terminal; Control the circuit breaker and the second contactor of the second test circuit of the tow test module to close and control the first contactor of the second test circuit to open, so that the electrical signal output from the backup power terminal of the corresponding optical storage integrated machine is transmitted to the AC power terminal of the optical storage integrated machine connected to the first test circuit.

8. The control method of the optical storage integrated machine test system according to claim 6, characterized in that: When the test rule is the second test rule, the step of controlling the first test circuit and the second test circuit to work is specifically: Control the circuit breaker and the first contactor of the second test circuit to close and control the second contactor of the second test circuit to open, so that the inverter of the corresponding integrated optical storage device receives an electrical signal through the AC power terminal and the standby power terminal outputs an electrical signal to the unidirectional DC power supply of the second test circuit; Control the unidirectional DC power supply of the second test circuit to work, so as to supply power to the photovoltaic power generation DC / DC circuit of the photovoltaic power generation module of the photovoltaic power generation integrated machine through the photovoltaic power generation end of the corresponding photovoltaic power generation integrated machine, and control the photovoltaic power generation integrated machine to work, so that the battery end of the photovoltaic power generation integrated machine outputs DC power to the battery end of the photovoltaic power generation integrated machine connected to the first test circuit of the towing test module; Control the photovoltaic and energy storage integrated machine connected to the first test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the photovoltaic and energy storage integrated machine connected to the first test circuit works to output an electrical signal to the inverter for processing and then output through the standby power terminal; The circuit breaker and the second contactor of the first test circuit are controlled to close and the first contactor of the first test circuit is controlled to open, so that the electrical signal output from the backup power terminal of the corresponding optical storage device is transmitted to the AC power terminal of the optical storage device connected to the second test circuit.

9. The control method of the optical storage integrated machine test system according to claim 6, characterized in that: When the test rule is the third test rule, the step of controlling the first test circuit and the second test circuit to work is specifically: Control the circuit breaker and the first contactor of the second test circuit to close and control the second contactor of the second test circuit to open, control the circuit breaker and the second contactor of the first test circuit to close and control the first contactor of the first test circuit to close, so that the inverter of the photovoltaic and storage integrated machine connected to the second test circuit receives an electrical signal through the AC power terminal, controls the battery module of the photovoltaic and storage integrated machine connected to the second test circuit to charge and discharge at a constant voltage, so that the inverter and battery DC / DC circuit of the photovoltaic and storage integrated machine connected to the second test circuit work, so that the battery terminal of the photovoltaic and storage integrated machine outputs direct current to the battery terminal of the photovoltaic and storage integrated machine connected to the first test circuit; Control the photovoltaic and storage integrated machine connected to the first test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the photovoltaic and storage integrated machine connected to the first test circuit works to output an electrical signal to the inverter for processing, which is then output through the backup power terminal and transmitted to the AC power terminal of the photovoltaic and storage integrated machine connected to the second test circuit.

10. The control method of the optical storage integrated machine test system according to claim 6, characterized in that: When the test rule is the fourth test rule, the step of controlling the first test circuit and the second test circuit to work is specifically: Control the circuit breaker and the first contactor of the first test circuit to close and control the second contactor of the first test circuit to open, control the circuit breaker and the second contactor of the second test circuit to close and control the first contactor of the second test circuit to close, so that the inverter of the photovoltaic and storage integrated machine connected to the first test circuit receives an electrical signal through the AC power terminal, controls the battery module of the photovoltaic and storage integrated machine connected to the first test circuit to charge and discharge at a constant voltage, so that the inverter and battery DC / DC circuit of the photovoltaic and storage integrated machine connected to the first test circuit work, so that the battery terminal of the photovoltaic and storage integrated machine outputs direct current to the battery terminal of the photovoltaic and storage integrated machine connected to the second test circuit; Control the photovoltaic and storage integrated machine connected to the second test circuit to work and load the rated power value, so that the battery DC / DC circuit of the battery module of the photovoltaic and storage integrated machine connected to the second test circuit works to output an electrical signal to the inverter for processing, which is then output through the backup power terminal and transmitted to the AC power terminal of the photovoltaic and storage integrated machine connected to the first test circuit.

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