WO2025001076A1 - 储能阀子模块测试方法、装置、系统和计算机设备 - Google Patents

储能阀子模块测试方法、装置、系统和计算机设备 Download PDF

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Publication number
WO2025001076A1
WO2025001076A1 PCT/CN2024/072593 CN2024072593W WO2025001076A1 WO 2025001076 A1 WO2025001076 A1 WO 2025001076A1 CN 2024072593 W CN2024072593 W CN 2024072593W WO 2025001076 A1 WO2025001076 A1 WO 2025001076A1
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WIPO (PCT)
Prior art keywords
submodule
test
energy storage
power module
module
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PCT/CN2024/072593
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English (en)
French (fr)
Inventor
宗彦妘
雷志方
刘子昂
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Contemporary Amperex Technology Co Ltd
Contemporary Amperex Future Energy Research Institute (Shanghai) Ltd
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Contemporary Amperex Technology Co Ltd
Contemporary Amperex Future Energy Research Institute (Shanghai) Ltd
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Publication of WO2025001076A1 publication Critical patent/WO2025001076A1/zh
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in networks by storage of energy
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/865—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/90—Regulation of charging or discharging current or voltage
    • H02J7/933—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a method, device, system, computer equipment, storage medium and computer program product for testing an energy storage valve submodule.
  • Energy storage provides frequency regulation and peak regulation in all aspects of power generation, transmission, distribution and use, and plays a role in stabilizing the frequency of the power grid, alleviating grid congestion, and improving the flexibility of power generation and use.
  • the cascade energy storage system has the advantages of modular design, high capacity utilization, high conversion efficiency, fast dynamic response, low harmonic content, and stable system operation. It has become a current research hotspot and has broad application prospects.
  • the core component of the cascade energy storage system is the energy storage valve submodule that integrates the power module and the battery module.
  • the reliable operation of the energy storage valve submodule is of great significance to the high reliability of the energy storage system and even the power system.
  • the operation reliability of the energy storage valve submodule is low.
  • a method for testing an energy storage valve submodule comprises: controlling a companion test submodule to perform direct current charging on a sample submodule, wherein the sample submodule comprises a first power module and a first energy storage module connected to each other, the companion test submodule comprises a second power module and a second energy storage module connected to each other, a high voltage end of the first power module is connected to a high voltage end of the second power module, and a low voltage end of the first power module is connected to a low voltage end of the second power module; obtaining charging state parameters of the sample submodule during the charging process; and determining the operating state of the sample submodule according to the charging state parameters.
  • the above scheme uses a test submodule and a test product submodule to build a towing architecture, uses the test submodule to charge the test product submodule, obtains the charging state parameters of the test product submodule during the charging process, and thus analyzes the operating state of the test product submodule.
  • the actual operating conditions of the energy storage valve submodule can be simulated, and the energy storage valve submodule can be tested for operation before it is put into use, thereby reducing the probability of a faulty energy storage valve submodule being put into the energy storage system and improving the operating reliability of the energy storage valve submodule.
  • controlling the accompanying test submodule to perform DC charging on the sample submodule includes: when the voltage difference between the accompanying test submodule and the sample submodule is greater than a first preset threshold, controlling the accompanying test submodule to charge the sample submodule in a forward mode; when the voltage difference between the accompanying test submodule and the sample submodule is less than a second preset threshold, controlling the accompanying test submodule to charge the sample submodule in a reverse mode; wherein the first preset threshold is greater than or equal to the second preset threshold.
  • the test submodule when the voltage of the accompanying test submodule is greater than the voltage of the test submodule, or the voltage of the accompanying test submodule is less than the voltage of the test submodule, the test submodule can be charged by the accompanying test submodule, thereby improving the charging test reliability of the test submodule.
  • controlling the companion test submodule to charge the sample submodule in forward mode includes: controlling the sample submodule to enter a charging mode, and controlling the power switch devices of the companion test submodule to be turned on in rotation, so as to charge the sample submodule in forward mode through the second energy storage module.
  • the above scheme controls the power switch devices of the companion test submodule to be turned on in rotation, so as to maintain a continuous and relatively stable DC current to charge the test submodule.
  • the high voltage end of the first power module is connected to the high voltage end of the second power module through an inductor
  • the accompanying test submodule is controlled to charge the sample submodule in reverse mode, including: controlling the accompanying test submodule to charge the inductor; controlling the sample submodule to enter a charging mode, and controlling the power switching devices of the accompanying test submodule to be turned on in rotation, so as to charge the sample submodule in reverse mode through the electric energy stored in the inductor and the second energy storage module.
  • the sample submodule when the voltage of the companion test submodule is lower than the voltage of the sample submodule, the sample submodule is first controlled to charge the inductor, and then the electric energy of the inductor and the electric energy stored in the second energy storage module are transmitted to the sample submodule, thereby achieving a voltage boosting effect and maintaining a continuous and relatively stable DC current to charge the sample submodule.
  • controlling the accompanying test submodule to DC charge the sample submodule includes: inputting a switch control signal with any duty cycle and frequency to the sample submodule, and inputting a switch control signal with a fixed frequency to the accompanying test submodule to control the accompanying test submodule to DC charge the sample submodule.
  • the test submodule can perform charging test with a switch control signal of any duty cycle and frequency, thereby completing charging test from 0 to the highest operating frequency and any duty cycle, enriching the test scenarios of the test submodule.
  • the energy storage valve submodule testing method further includes: adjusting the duty cycle of the switch control signal of the accompanying test submodule according to the current sampling value of the first end of the test submodule and the preset reference current.
  • the duty cycle of the switch control signal can be adjusted in real time in combination with the actual feedback current sampling value, thereby improving the test reliability of the test submodule.
  • the charging state parameter includes at least one of a current parameter, a voltage parameter, and a temperature parameter.
  • the charging state parameter includes at least one of the current parameter, the voltage parameter, and the temperature parameter, so that the corresponding test content of the test submodule can be completed according to at least one of the current parameter, the voltage parameter, and the temperature parameter, which can effectively enrich the test content.
  • determining the operating state of the test submodule according to the charging state parameter includes: determining the voltage stress state and the current stress state of the test submodule during the charging process according to the voltage parameter and the current parameter.
  • the above scheme can implement voltage stress testing according to the voltage parameters of the test submodule during the charging process, and implement current stress testing through current parameters, so as to determine the voltage stress state and current stress state of the energy storage valve submodule, and improve the operational reliability of the test submodule when it is put into use.
  • the current fluctuation state and the temperature rise state of the test submodule are determined according to the current parameters and the temperature parameters.
  • the above scheme can implement a current fluctuation state test according to the current parameters of the test submodule during the charging process, and implement a temperature rise test through the temperature parameters, thereby determining the current fluctuation state and temperature rise state of the energy storage valve submodule, and improving the operational reliability of the test submodule when it is put into use.
  • the energy storage valve submodule testing method further includes: when the accompanying test submodule has a need for power replenishment, controlling the accompanying test submodule to perform power replenishment.
  • the above scheme can provide power replenishment for the accompanying test submodule, whether before or during the test, if the accompanying test submodule needs power replenishment, which can effectively increase the test time of the energy storage valve submodule.
  • the energy storage valve submodule testing method further includes: controlling the test submodule to discharge the companion test submodule; obtaining discharge state parameters of the test submodule during the discharge process; and determining the operating state of the test submodule according to the discharge state parameters.
  • the above scheme can also realize the discharge test of the test submodule by controlling the test submodule to charge the companion test submodule, thereby further improving the operational reliability of the test submodule when it is put into use.
  • a test device for energy storage valve submodules comprising: a charging control module, used to control a test submodule to charge a sample submodule with direct current, wherein the sample submodule comprises a first power module and a first energy storage module connected to each other, and the test submodule comprises A second power module and a second energy storage module are connected, the high voltage end of the first power module is connected to the high voltage end of the second power module, and the low voltage end of the first power module is connected to the low voltage end of the second power module; a parameter acquisition module is used to obtain the charging state parameters of the test submodule during the charging process; the charging state parameters are used to determine the operating state of the test submodule.
  • a computer device includes a memory and a processor.
  • the memory stores a computer program.
  • the processor executes the computer program, the steps of the energy storage valve submodule testing method are implemented.
  • a computer-readable storage medium stores a computer program, which implements the steps of the energy storage valve submodule testing method when executed by a processor.
  • a computer program product includes a computer program, which implements the steps of the above-mentioned energy storage valve submodule testing method when executed by a processor.
  • a storage valve submodule testing system includes a test submodule, a companion test submodule and a processor, wherein the test submodule includes a first power module and a first energy storage module connected to each other, the companion test submodule includes a second power module and a second energy storage module connected to each other, the high voltage end of the first power module is connected to the high voltage end of the second power module, the low voltage end of the first power module is connected to the low voltage end of the second power module, the control end of the first power module and the control end of the second power module are respectively connected to the processor, and the processor is used to test the test submodule according to the above-mentioned energy storage valve submodule testing method.
  • the above scheme uses a test submodule and a test product submodule to build a pair-drag architecture, uses the test submodule to charge the test product submodule, obtains the charging state parameters of the test product submodule during the charging process, and thus analyzes the operating state of the test product submodule.
  • the actual operating conditions of the energy storage valve submodule can be simulated, and the energy storage valve submodule can be tested for operation before it is put into use, thereby reducing the probability of a faulty energy storage valve submodule being put into the energy storage system and improving the operating reliability of the energy storage valve submodule.
  • the energy storage valve submodule testing system further includes an inductor, and the high voltage end of the first power module is connected to the high voltage end of the second power module through the inductor.
  • an inductor is arranged between the high-voltage ends of the first power module and the second power module, so that when the voltage of the companion test submodule is low, the test submodule can still be charged through inductive energy storage, thereby improving the charging reliability of the companion test submodule for charging the test submodule.
  • the energy storage valve submodule testing system further includes an energy replenishment circuit connected to the second energy storage module.
  • an energy replenishment circuit is also provided in the energy storage valve submodule test system.
  • the energy compensation circuit includes a switch device and a current source, and the current source is connected to the second energy storage module through the switch device.
  • the energy replenishment circuit specifically includes a switch device and a current source connected in series, has a simple structure, and can effectively save the volume and circuit cost of the energy storage valve submodule test system.
  • the first power module includes a first power unit and a first capacitor connected in parallel, the high voltage end of the first power unit is connected to the high voltage end of the second power module, and the low voltage end of the first power unit is connected to the low voltage end of the second power module.
  • the second power module includes a second power unit and a second capacitor in parallel, the high voltage end of the second power unit is connected to the high voltage end of the first power module, and the low voltage end of the second power unit is connected to the low voltage end of the first power module.
  • the first power module and the second power module both include power cells and capacitors.
  • the first power module includes a full-bridge power module or a half-bridge power module
  • the second power module includes a full-bridge power module or a half-bridge power module.
  • test submodule and the accompanying test submodule can be a half-bridge structure and a full-bridge structure respectively, which can realize the pair-drag test of the energy storage valve submodule under the half-bridge structure, or the pair-drag test of the energy storage valve submodule under the full-bridge structure, and has a wide range of application.
  • FIG1 is a schematic flow chart of a method for testing an energy storage valve submodule in some embodiments of the present application
  • FIG2 is a schematic diagram of the structure of an energy storage valve submodule test system in some embodiments of the present application.
  • FIG3 is a schematic flow chart of a method for testing an energy storage valve submodule in some other embodiments of the present application.
  • FIG4 is a schematic flow chart of a method for testing an energy storage valve submodule in some other embodiments of the present application.
  • FIG5 is a schematic diagram of an equivalent circuit structure of an energy storage valve submodule test system in some embodiments of the present application.
  • FIG6 is a schematic diagram of the structure of an energy storage valve submodule test system in some other embodiments of the present application.
  • FIG7 is a schematic diagram of an inductor current waveform during forward mode charging in some embodiments of the present application.
  • FIG8 is a schematic diagram of an inductor current waveform during reverse mode charging in some embodiments of the present application.
  • FIG9 is a schematic diagram of switch control signal injection in some embodiments of the present application.
  • FIG10 is a schematic flow chart of a method for testing an energy storage valve submodule in some further embodiments of the present application.
  • FIG11 is a schematic flow chart of a method for testing an energy storage valve submodule in some other embodiments of the present application.
  • FIG12 is a schematic diagram of the structure of a storage valve submodule testing device in some embodiments of the present application.
  • FIG13 is a schematic diagram of the structure of an energy storage valve submodule testing device in other embodiments of the present application.
  • FIG14 is a schematic diagram of the structure of an energy storage valve submodule testing device in some other embodiments of the present application.
  • FIG15 is a schematic diagram of the structure of an energy storage valve submodule testing device in some other embodiments of the present application.
  • FIG16 is a schematic diagram of the internal structure of a computer device in some embodiments of the present application.
  • FIG17 is a schematic diagram of the structure of an energy storage valve submodule test system in some other embodiments of the present application.
  • FIG18 is a schematic diagram of the structure of an energy storage valve submodule test system in some other embodiments of the present application.
  • FIG19 is a schematic diagram of the structure of an energy storage valve submodule test system in some other embodiments of the present application.
  • FIG. 20 is a schematic diagram of the structure of the energy storage valve submodule testing system in some further embodiments of the present application.
  • connection and “fixation” should be understood in a broad sense.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • connection and “fixation” should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • the core part is the energy storage valve submodule.
  • Each energy storage valve submodule includes a power part and an energy storage part. Multiple energy storage valve submodules are connected to form an energy storage system. Typically, energy storage valve submodules are cascaded to form a cascade energy storage system. Therefore, the reliable operation of the energy storage valve submodule directly affects the operation of the energy storage system. How to improve the operational reliability of the energy storage valve submodule is particularly important.
  • the energy storage valve submodule In addition to the operational failure of the energy storage valve submodule during use due to power grid failure, improper operation or component aging, the energy storage valve submodule itself may have a fault before being connected to the energy storage system. Therefore, in order to improve the operational reliability of the energy storage submodule and reduce the failure rate of the energy storage valve submodule connected to the energy storage system, it is particularly important to test the energy storage valve submodule before connecting it to the energy storage system.
  • the technical solution of the present application provides a method for testing an energy storage valve sub-module.
  • two energy storage valve sub-modules of the same type are selected, one of which is used as a companion test sub-module and the other as a test sub-module.
  • the two energy storage valve sub-modules are connected to form a pair-drag architecture.
  • the companion test sub-module is used to charge the test sub-module.
  • the charging status parameters of the test sub-module are obtained, and finally the operating status of the test sub-module is determined based on the charging status parameters.
  • the actual operating conditions of the energy storage valve submodule can be simulated.
  • the energy storage valve submodule is tested for operation to determine whether the energy storage valve submodule has a fault, thereby reducing the probability of a faulty energy storage valve submodule being put into the energy storage system and improving the operational reliability of the energy storage valve submodule.
  • the test submodule can also discharge to the companion test submodule, and accordingly, the discharge state parameters of the test submodule are obtained at this time, and the operating state of the test submodule is determined by the discharge state parameters, thereby completing the discharge test of the test submodule.
  • This can further reduce the probability of a faulty energy storage valve submodule being put into the energy storage system, and further improve the operating reliability of the energy storage valve submodule.
  • the energy storage valve submodule provided in the present application is applied in an energy storage system.
  • the energy storage valve submodule is applied in an electrochemical energy storage system, that is, an energy storage system that stores, releases and manages energy through batteries.
  • the type of electrochemical energy storage system is not unique, as long as it is an electrochemical energy storage system that needs to be built using an energy storage valve submodule.
  • the electrochemical energy storage system includes a high-voltage direct-mounted energy storage system.
  • FIG. 1 shows a method for testing an energy storage valve submodule, including step 102 , step 104 and step 106 .
  • Step 102 controlling the accompanying test submodule to perform direct current charging on the sample submodule.
  • the test submodule includes a first power module and a first energy storage module connected to each other
  • the accompanying test submodule includes a second power module and a second energy storage module connected to each other, the high voltage end of the first power module is connected to the high voltage end of the second power module, and the low voltage end of the first power module is connected to the low voltage end of the second power module.
  • the accompanying test submodule is an energy storage valve submodule used to provide charging power or store and release power for the energy storage valve submodule to be tested.
  • the test submodule is the energy storage valve submodule that needs to be tested, that is, the energy storage valve submodule to be tested.
  • the high voltage end of the second power module of the companion test sub-module 204 (not shown) is connected to the high voltage end of the first power module of the test sub-module 202 (not shown) through the inductor L.
  • test submodule in the actual test process, in the towing architecture built by the two energy storage valve submodules, the definitions of the test submodule and the accompanying test submodule are not unique. If both energy storage valve submodules need to be tested, any one of the energy storage valve submodules can be used as the test submodule, and the other energy storage valve submodule can be tested as the accompanying test submodule. After the test of the test submodule is completed, it is used as the accompanying test submodule, and the previous accompanying test submodule is used as the test submodule, and the test of the other energy storage valve submodule is switched.
  • the energy storage valve submodule includes an energy storage module and a power module.
  • the processor only needs to send control signals to the second energy storage module and the second power module of the accompanying test submodule, and the first energy storage module and the first power module of the sample submodule, so that the electric energy stored in the second energy storage module of the accompanying test submodule is transmitted to the sample submodule, thereby realizing the charging of the sample submodule.
  • the processor can be an additional setting of the independent energy storage valve submodule, which can be an MCU (Microcontroller Unit), a CPU (Central Processing Unit), etc.
  • the processor can also be integrated in the control board of the energy storage valve submodule, which is not limited to the specific form and can be selected in combination with actual needs.
  • Step 104 obtaining charging state parameters of the test submodule during the charging process.
  • the charging state parameter is a parameter related to the charging state of the test submodule during the charging process. It can be a charging-related parameter applied to the test submodule during the test process, or a parameter that changes with the change of charging time during the test process. There is no specific limitation, and it can be selected according to actual needs.
  • the processor and the test submodule exchange information to obtain it, or it can be acquired by setting an additional state parameter collector in the test submodule.
  • the processor can exchange information with the battery management system of the energy storage module to obtain the temperature parameters, charging current parameters, and charging voltage parameters of the energy storage module, and use these parameters as charging state parameters.
  • Step 106 determining the operating state of the test submodule according to the charging state parameter.
  • the processor After the processor obtains the charging state parameters, it will analyze the charging state parameters to determine the current operating state of the test submodule, that is, to determine whether the test submodule is operating normally. If it is determined that the test submodule is operating normally, the test submodule can be put into use in the energy storage system normally. If the test submodule is not operating normally, the staff can be informed by outputting alarm prompt information, so that the staff can perform maintenance in time.
  • the operating state of the test submodule is not unique, and the operating state finally analyzed may be different depending on the type of charging state parameter obtained.
  • the operating state may include states related to voltage, current or temperature changes during the charging process.
  • the processor can also push the operating status parameters to the staff, which can be implemented by displaying on the display terminal or voice prompt information, etc., which is not limited here.
  • the staff will then analyze the displayed charging status parameters and finally determine the operating status of the test submodule, thereby determining whether the test submodule is suitable for use in the energy storage system.
  • the above scheme uses a test submodule and a test product submodule to build a towing architecture, uses the test submodule to charge the test product submodule, obtains the charging state parameters of the test product submodule during the charging process, and thus analyzes the operating state of the test product submodule.
  • the actual operating conditions of the energy storage valve submodule can be simulated, and the energy storage valve submodule can be tested for operation before it is put into use, thereby reducing the probability of a faulty energy storage valve submodule being put into the energy storage system and improving the operating reliability of the energy storage valve submodule.
  • the energy storage valve submodule testing method further includes step 302 .
  • Step 302 When the accompanying test submodule has a need for power replenishment, control the accompanying test submodule to perform power replenishment.
  • replenishing power means replenishing electric energy, that is, charging the accompanying test submodule.
  • the accompanying test submodule in order to simulate various working conditions of the test submodule as much as possible, the accompanying test submodule needs to charge the test submodule for a longer time. Therefore, the electric energy stored in the energy storage module of the accompanying test submodule may be too low and cannot meet the long-term charging demand. Therefore, the solution of this embodiment needs to control the accompanying test submodule to replenish power when the accompanying test submodule needs to replenish power. To achieve long-term running tests.
  • the staff may set a preset number of charging operations.
  • One number of reincarnations includes: the test submodule is provided with a plurality of different switch control signals. If the test submodule completes a charging test with each of the set switch control signals, it is considered that a test of one number of reincarnations is completed.
  • the processor can determine whether the accompanying test submodule has a need for additional power based on the preset number of reincarnations and the current power of the accompanying test submodule. If the current power can meet the charging requirements of the preset number of reincarnations, there is no need to supplement power. If the current power does not meet the charging requirements of the preset number of reincarnations, it is necessary to supplement power for the accompanying test submodule.
  • the remaining power of the current accompanying test submodule can be detected in real time.
  • the remaining power does not meet the next charging demand, it is considered that the accompanying test submodule needs to be recharged, and then recharging is started for the accompanying test submodule.
  • an external supplementary power device may be connected to the accompanying test submodule to control the on and off of the power switch device of the accompanying test submodule, and the external supplementary power device may be used to charge the accompanying test submodule, thereby realizing the supplementary power operation.
  • a power supply circuit may be built at the accompanying test submodule. During the actual test process, the power supply circuit may be turned on to supply power to the accompanying test submodule in combination with the remaining power of the accompanying test submodule.
  • the above scheme can provide power replenishment for the accompanying test submodule, whether before or during the test, if the accompanying test submodule needs power replenishment, which can effectively increase the test time of the energy storage valve submodule.
  • step 102 includes step 402 and step 404 .
  • Step 402 When the voltage difference between the accompanying test submodule and the sample submodule is greater than a first preset threshold, the accompanying test submodule is controlled to charge the sample submodule in a forward mode.
  • Step 404 When the voltage difference between the accompanying test submodule and the sample submodule is less than a second preset threshold, the accompanying test submodule is controlled to charge the sample submodule in a reverse mode.
  • the first preset threshold is greater than or equal to the second preset threshold.
  • the processor can obtain the voltage of the accompanying test submodule and the test product submodule in real time, and determine the charging mode required by the current test product submodule based on the voltage difference between the accompanying test submodule and the test product submodule, and then control the accompanying test submodule to charge the test product submodule in different operating states.
  • forward mode charging refers to the process in which the voltage of the companion test submodule is significantly different from the voltage of the sample submodule, and the electric energy is transferred from the higher voltage companion test submodule to the lower voltage sample submodule to charge the sample submodule.
  • Reverse mode charging refers to the process in which the voltage of the companion test submodule is higher than the voltage of the sample submodule, but the difference between the two is The voltage of the accompanying test submodule is smaller, and electric energy is transferred from the accompanying test submodule with a higher voltage to the sample submodule with a lower voltage to charge the sample submodule (in this process, as the charging time increases, the voltage of the accompanying test submodule may be lower than the voltage of the sample submodule); or when the voltage of the accompanying test submodule is lower than the low voltage of the sample submodule, electric energy is transferred from the accompanying test submodule with a lower voltage to the sample submodule with a higher voltage to charge the sample submodule.
  • the specific sizes of the first preset threshold and the second preset threshold are not unique.
  • the two can be set the same, for example, both are set to 0; or they can be set differently.
  • the first preset threshold can be set to a voltage threshold greater than 0, and the second preset threshold can be set to a voltage threshold less than 0.
  • the specific selection can be made based on actual needs.
  • the entire test system can achieve full energy operation, that is, no matter how much the voltage of the accompanying test submodule is, the accompanying test submodule can realize direct current charging of the test product submodule.
  • the test submodule when the voltage of the accompanying test submodule is greater than the voltage of the test submodule, or the voltage of the accompanying test submodule is less than the voltage of the test submodule, the test submodule can be charged by the accompanying test submodule, thereby improving the charging test reliability of the test submodule.
  • controlling the companion test submodule to charge the sample submodule in forward mode includes: controlling the sample submodule to enter a charging mode, and controlling the power switch devices of the companion test submodule to be turned on in rotation, so as to charge the sample submodule in forward mode through the energy storage module of the companion test submodule.
  • the pair-drag structure constructed by the accompanying test submodule and the test product submodule can be equivalent to that shown in Figure 5.
  • u 1 and u 2 are the voltages of the test product submodule and the accompanying test submodule
  • r 1 and r 2 are the internal resistances of the test product submodule and the accompanying test submodule
  • i L is the line resistance
  • L is the inductor
  • i L is the inductor current
  • d 1 and d 2 are the duty cycles of the switch control signals of the test product submodule and the accompanying test submodule, respectively.
  • the method of controlling the test sub-module to enter the charging mode and controlling the power switching devices of the companion test sub-module to rotate and turn on is not unique. It is different due to the different power module structures of the test sub-module and the companion test sub-module.
  • the half-bridge power module is used as an example for explanation below.
  • the test submodule includes a first power module 601, a first energy storage module 602, and a companion test submodule.
  • the module includes a second power module 603 and a second energy storage module 604.
  • the structures of the first power module 601 and the second power module 603 can be the same or different, depending on actual needs.
  • FIG6 takes the case where the structures of the first power module 601 and the second power module 603 are consistent as an example.
  • the first power module 601 includes a power unit and a first capacitor C1.
  • the power unit is a half-bridge structure, including a first power switch device T1 and a second power switch device T2.
  • the common end of the first power switch device T1 and the second power switch device T2 serves as a high-voltage end.
  • the input end of the first power switch device T1 is connected to the input end of the second power switch device T2, a processor (not shown) and a first end of the inductor L.
  • the output end of the first power switch device T1 is connected to the first end of the first capacitor C1 and the first end of the first energy storage module 602.
  • the output end of the second power switch device T2 serves as a low-voltage end and is connected to the second power module 603.
  • the output end of the second power switch device T2 is also connected to the second end of the first capacitor C1 and the second end of the first energy storage module 602.
  • the control end of the first power switch device T1 and the control end of the second power switch device T2 are respectively connected to the processor (not shown).
  • the processor outputs a switch control signal to control the first power switch device T1 to turn on, and the test submodule enters the charging mode. At this time, the processor outputs a switch control signal to control the two power switch devices of the accompanying test submodule to turn on in rotation.
  • d2 represents the duty cycle of the switch control signal of the accompanying test submodule
  • T2 represents the period of the switch control signal of the accompanying test submodule, that is, 1/f, where f is the frequency.
  • the specific types of the first power switch device T1 and the second power switch device T2 are not unique, and can be MOS (Metal-Oxide-Semiconductor) tube or IGBT (Insulated Gate Bipolar Transistor), etc., without specific limitation.
  • MOS Metal-Oxide-Semiconductor
  • IGBT Insulated Gate Bipolar Transistor
  • the above scheme controls the power switch devices of the test submodule to alternately conduct, so that the current flowing through the inductor increases and decreases alternately. Since the inductor current cannot change suddenly, the current direction will not change in a short time, thereby maintaining a continuous and relatively stable DC current to charge the test submodule.
  • the high voltage end of the first power module is connected to the high voltage end of the second power module through an inductor
  • the accompanying test submodule is controlled to charge the sample submodule in reverse mode, including: controlling the accompanying test submodule to charge the inductor; controlling the sample submodule to enter a charging mode, and controlling the power switch device of the accompanying test submodule to be turned on in turn, so as to charge the electric energy stored in the inductor and the accompanying test submodule in reverse mode.
  • the energy storage module of the test submodule charges the test sample submodule in reverse mode.
  • an inductor is set between the accompanying test submodule and the test product submodule, and the power module includes a half-bridge power module.
  • the accompanying test submodule when the voltage difference between the accompanying test submodule and the test product submodule is less than the second preset threshold value, the accompanying test submodule is first controlled to charge the inductor.
  • the processor first controls the second power switch device T2 connected to the negative pole of the first energy storage module 602 in the test product submodule to turn on, and at the same time controls the power switch device connected to the positive pole of the second energy storage module 604 in the accompanying test submodule to turn on. At this time, the electric energy of the accompanying test submodule is transmitted to the inductor for charging.
  • the processor controls the test submodule to enter the charging mode, and controls the power switch devices of the accompanying test submodule to be turned on in rotation. Specifically, the processor controls the first power switch device T1 of the test submodule to be turned on, and the electric energy input to the test submodule includes the electric energy stored in the inductor and the electric energy stored in the second energy storage module 604, so as to achieve a boosting effect, and realize the reverse mode charging of the accompanying test submodule to the test submodule.
  • d1 represents the duty cycle of the switch control signal of the test submodule
  • T1 represents the period of the switch control signal of the test submodule
  • d2 represents the duty cycle of the switch control signal of the accompanying test submodule
  • T2 represents the period of the switch control signal of the accompanying test submodule.
  • the sample submodule when the voltage of the companion test submodule is lower than the voltage of the sample submodule, the sample submodule is first controlled to charge the inductor, and then the electric energy of the inductor and the electric energy stored in the energy storage module of the companion test submodule are transmitted to the sample submodule, thereby achieving a voltage boosting effect and maintaining a continuous and relatively stable DC current to charge the sample submodule.
  • controlling the accompanying test submodule to DC charge the sample submodule includes: inputting a switch control signal with any duty cycle and frequency to the sample submodule, and inputting a switch control signal with a fixed frequency to the accompanying test submodule to control the accompanying test submodule to DC charge the sample submodule.
  • the scheme of this embodiment in the process of testing the test submodule, in order to obtain the charging state parameters of the test submodule under various working conditions, improves the test accuracy of the test submodule.
  • the accompanying test submodule and the test submodule are modulated separately, and when the test submodule is controlled to start charging, a switch control signal with any duty cycle (d1) and any frequency (f) can be input to the test submodule, and the accompanying test submodule controls the operation of its second power module with a switch control signal of a higher fixed frequency, thereby charging the test submodule.
  • the type of switch control signal is not unique.
  • the switch control signal includes a PWM (Pulse Width Modulation) signal.
  • the processor is provided with a PWM controller or the processor has a PWM modulation function. In the actual test process, the PWM controller generates a switch control signal of any frequency and any duty cycle according to the test requirements, controls the operation of the first power module of the test submodule, and completes DC charging.
  • the frequency and duty cycle of the switch control signal required by the test submodule can be preset.
  • the frequency of the switch control signal is set to 10 Hz (Hertz), 20 Hz... 1000 Hz, then, in the actual test process, the test submodule needs to be controlled to run at a frequency of 10 Hz, 20 Hz... up to 1000 Hz to complete each charging test at the set frequency.
  • the test submodule can perform charging test with a switch control signal of any duty cycle and frequency, thereby completing charging test from 0 to the highest operating frequency and any duty cycle, enriching the test scenarios of the test submodule.
  • the energy storage valve submodule testing method further includes: adjusting the duty cycle of the switch control signal of the accompanying test submodule according to the current sampling value of the first end of the test submodule and the preset reference current.
  • the duty cycle of the switch control signal of the accompanying test submodule changes with the change of the load current fed back by the test product submodule.
  • the specific adjustment method is PI (proportional Integral) regulation.
  • the processor has a PI regulation function or is provided with a PI regulator.
  • the processor obtains the current value between the first end of the test product submodule and the inductor, that is, the current sampling value (iL).
  • the preset reference current (I_ref) and the current sampling value will produce a difference, and the difference enters the PI regulator for regulation.
  • the PI regulator can make the input value track the reference value, that is, here the PI regulator makes the difference between the preset reference current and the current sampling value as small as possible, that is, the value of the current sampling value always tracks the value of the preset reference current, and a stable DC charging current is achieved.
  • the duty cycle value when the difference between the preset reference current and the current sampling value is very small is obtained through the output of the PI regulator, and it is used as the duty cycle of the switch control signal of the accompanying test submodule, and input into the PWM controller to generate a modulation wave to achieve the control of the accompanying test submodule.
  • the size of the preset reference current is not unique. According to actual test requirements, the preset reference current can be set to any size, such as 0 to the maximum operating current of the test submodule, so as to achieve full testing of the test submodule from 0 to the maximum operating current.
  • the duty cycle of the switch control signal can be adjusted in real time in combination with the actual feedback current sampling value, thereby improving the test reliability of the test submodule.
  • the charging state parameter includes at least one of a current parameter, a voltage parameter, and a temperature parameter.
  • the current parameter is the current value of the test submodule in the charging operation state
  • the voltage parameter is the current value of the test submodule in the charging operation state
  • the temperature parameter is the temperature value of the battery in the energy storage module when the test submodule is under the charging operation state.
  • At least one of the current parameters, voltage parameters, and temperature parameters can be obtained, so as to analyze the operating status of the test submodule based on one or more of the current parameters, voltage parameters, and temperature parameters, so as to determine whether the test submodule can be put into use in the energy storage system.
  • the charging state parameter includes at least one of the current parameter, the voltage parameter, and the temperature parameter, so that the corresponding test content of the test submodule can be completed according to at least one of the current parameter, the voltage parameter, and the temperature parameter, which can effectively enrich the test content.
  • step 106 includes step 1061.
  • Step 1061 determining the voltage stress state and the current stress state of the test submodule during the charging process according to the voltage parameter and the current parameter.
  • voltage stress is the ratio of voltage in application to component specification value, that is, the ratio of working voltage to rated voltage.
  • Current stress is the ratio of current in application to component specification value, that is, the ratio of working current to rated current.
  • the scheme of this embodiment obtains voltage parameters and current parameters in real time to analyze and obtain the voltage stress state and current stress state of the test submodule, that is, the real-time voltage stress and current stress.
  • the specific forms of the voltage stress state and the current stress state are not unique.
  • the voltage stress state may be a specific voltage stress value of the voltage stress, or an analysis result of whether the voltage stress is normal, etc., without specific limitation.
  • the current stress state may be a specific current stress value of the voltage stress, or an analysis result of whether the current stress is normal, etc., without specific limitation.
  • a threshold value can be set for the voltage stress and the current stress respectively. When the voltage stress exceeds the corresponding threshold value, the voltage parameter is confirmed to be abnormal, and when the current stress exceeds the corresponding threshold value, the current parameter is confirmed to be abnormal.
  • the threshold value is not unique and is not specifically limited.
  • the threshold value corresponding to the voltage stress can be set to 90%, and the threshold value corresponding to the current stress can be set to 80%.
  • the above scheme can implement voltage stress testing according to the voltage parameters of the test submodule during the charging process, and implement current stress testing through current parameters, so as to determine the voltage stress state and current stress state of the energy storage valve submodule, and improve the operational reliability of the test submodule when it is put into use.
  • step 106 further includes step 1063.
  • Step 1063 according to the current parameter
  • the current fluctuation state and temperature rise state of the test submodule are determined by the number and temperature parameters.
  • the current fluctuation is the fluctuation of the current value currently obtained relative to the current value obtained last time.
  • the temperature rise is the value of the temperature parameter currently obtained relative to the temperature parameter obtained last time.
  • the current fluctuation state can be a specific value of the current fluctuation, or an analysis result of whether the current fluctuation is normal;
  • the temperature rise state can be a specific temperature rise value, or an analysis result of whether the temperature rise is normal, without specific limitation.
  • the processor pre-stores a current fluctuation standard threshold and a temperature rise standard threshold. After obtaining the current fluctuation value or the temperature rise value, the processor compares and analyzes with the current fluctuation standard threshold and the temperature rise standard threshold respectively. When the current fluctuation value is less than or equal to the current fluctuation standard threshold, the current fluctuation is considered normal, and when the temperature rise value is less than or equal to the temperature rise standard threshold, the temperature rise is considered normal.
  • the above scheme can implement a current fluctuation state test according to the current parameters of the test submodule during the charging process, and implement a temperature rise test through the temperature parameters, thereby determining the current fluctuation state and temperature rise state of the energy storage valve submodule, and improving the operational reliability of the test submodule when it is put into use.
  • the specific analysis method is not unique, and it can be achieved by analyzing the changing state of the voltage parameter, the changing state of the current parameter, or the changing state of the temperature parameter. In other embodiments, it can also be further analyzed according to the voltage stress state, the current stress state, the current fluctuation state, or the temperature rise state, without specific limitation.
  • the energy storage valve submodule test method further includes steps 112, 114, and 116.
  • Step 112 controlling the test submodule to discharge the companion test submodule.
  • Step 114 obtaining the discharge state parameters of the test submodule during the discharge process.
  • Step 116 determining the operating state of the test submodule according to the discharge state parameters.
  • test submodule when testing the test submodule, in addition to the charging test in the above embodiment, the test submodule can also be controlled to charge the companion test submodule, obtain the discharge state parameters in this process, and implement the discharge test of the test submodule in combination with the discharge state parameters.
  • discharge state parameters can also include at least one of current parameters, voltage parameters, and temperature parameters. Combined with one or more of the current parameters, voltage parameters, and temperature parameters, one or more of the voltage stress test, current stress test, current fluctuation test, and temperature rise test can be implemented, without specific limitation.
  • test submodule in this embodiment only needs to be regarded as the accompanying test submodule in the above embodiment, and the accompanying test submodule in this embodiment only needs to output the corresponding control signal to control the test submodule to charge the accompanying test submodule, and the specific details will not be repeated.
  • the above scheme can also realize the discharge test of the test submodule by controlling the test submodule to charge the companion test submodule, thereby further improving the operational reliability of the test submodule when it is put into use.
  • both the test submodule and the accompanying test submodule are energy storage valve submodules of a half-bridge structure, which are constructed to form a towing architecture, and the specific structure can be seen in Figure 6.
  • the processor first obtains the amount of electricity stored in the energy storage module of the accompanying test submodule, and analyzes whether it can complete the charging test of the preset number of cycles. If not, the accompanying test submodule is charged through an external charging device so that the stored electricity can complete the charging test of several cycles; if it can, the charging test is directly started.
  • the processor outputs a switch control signal to the test submodule according to the preset duty cycle and frequency, and controls the on or off of the first power switch device T1 and the second power switch device T2 in the power unit of the first power module 601 of the test submodule.
  • the current sampling value of the test submodule is obtained in real time, and compared and analyzed with the preset reference current, so that the current sampling value follows the preset reference current, so as to obtain the duty cycle required by the accompanying test submodule through PI adjustment, and thereby output a switch control signal of a fixed frequency to the accompanying test submodule, and control the on and off of the power switch device in the power unit of the second power module 603 of the accompanying test submodule, thereby realizing the DC charging of the test submodule by the accompanying test submodule.
  • the processor can also obtain and analyze the voltage values of the test submodule and the accompanying test submodule, and start forward mode charging when the voltage difference between the accompanying test submodule and the test submodule is greater than the first preset threshold.
  • the processor controls the first power switch device T1 to turn on and the second power switch device T2 to turn off through the switch control signal, and maintains continuous and relatively stable DC charging by controlling the two power switch devices of the accompanying test submodule to turn on alternately.
  • the second power switch device T2 of the sample submodule is first controlled to be turned on, and the power switch device connected to the positive end of the second energy storage module 604 in the accompanying test submodule is turned on to charge the inductor L.
  • the first power switch device T1 of the sample submodule is switched on, and the two switch devices of the accompanying test submodule are alternately turned on to transmit the electric energy stored in the inductor L and the electric energy stored in the second energy storage module of the accompanying test submodule to the sample submodule, so as to achieve a boosting effect, that is, to realize reverse mode charging.
  • the processor obtains the voltage parameters of the test submodule in real time. Numbers, current parameters and temperature parameters, according to one or more of the voltage parameters, current parameters and temperature parameters obtained in real time, analyze whether the test submodule can be charged normally. According to the voltage parameters or current parameters, calculations are performed to obtain voltage stress and current stress respectively, and then compared and analyzed with the corresponding thresholds to obtain the result of whether the voltage parameters or current parameters are normal during the charging process. And according to the current parameters or temperature parameters, calculations are performed to obtain current fluctuation values or temperature rise values, which are compared and analyzed with the current fluctuation standard threshold and the temperature rise standard threshold respectively, to determine whether there is charging abnormality in the test submodule. Finally, when all the above tests are normal, it is determined that the test submodule is normal and can be put into use in the energy storage system with high operational reliability.
  • steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.
  • the embodiment of the present application also provides a storage valve submodule testing device for implementing the above-mentioned storage valve submodule testing method.
  • the implementation solution provided by the device to solve the problem is similar to the implementation solution recorded in the above-mentioned method, so the specific limitations in the one or more storage valve submodule testing device embodiments provided below can refer to the above-mentioned limitations on the storage valve submodule testing method, and will not be repeated here.
  • FIG. 12 shows a device for testing an energy storage valve submodule, including a charging control module 122 and a parameter acquisition module 124 .
  • the charging control module 122 is used to control the companion submodule to perform DC charging on the sample submodule; the parameter acquisition module 124 is used to acquire the charging state parameters of the sample submodule during the charging process; the charging state parameters are used to determine the operating state of the sample submodule.
  • the energy storage valve submodule test device may acquire the charging state parameters and then push them to the user, and the user may determine the operating state of the sample submodule in combination with the charging state parameters; or it may acquire the charging state parameters, further determine the operating state of the sample submodule according to the charging state parameters, and finally push the operating state results, which are not limited here.
  • the energy storage valve submodule testing device further includes a power supply module 132 .
  • the power replenishment module 132 is used to control the accompanying test submodule to replenish power when the accompanying test submodule has a power replenishment demand.
  • the charging control module 122 is further configured to control the test submodule to charge the sample submodule in a forward mode when the voltage difference between the test submodule and the sample submodule is greater than a first preset threshold; When the voltage difference of the test submodule is less than the second preset threshold, the companion test submodule is controlled to charge the test submodule in reverse mode.
  • the charging control module 122 is further used to control the test submodule to enter the charging mode, and control the power switch devices of the accompanying test submodule to be turned on in rotation, so as to charge the test submodule in the forward mode through the energy storage module of the accompanying test submodule.
  • the charging control module 122 is also used to control the companion test sub-module to charge the inductor; control the test product sub-module to enter the charging mode, and control the power switch device of the companion test sub-module to be turned on in rotation, so as to charge the test product sub-module in reverse mode through the electric energy stored in the inductor and the energy storage module of the companion test sub-module.
  • the charging control module 122 is further used to input a switch control signal with any duty cycle and frequency to the test submodule, and to input a switch control signal with a fixed frequency to the accompanying test submodule, so as to control the accompanying test submodule to provide DC charging to the test submodule.
  • the charging control module 122 is further configured to adjust the duty cycle of the switch control signal of the accompanying test submodule according to the current sampling value of the first end of the test submodule and a preset reference current.
  • the energy storage valve submodule test device further includes a discharge test module 142.
  • the discharge test module 142 is used to control the test submodule to discharge the companion test submodule; obtain the discharge state parameters of the test submodule during the discharge process; and determine the operating state of the test submodule according to the discharge state parameters.
  • the energy storage valve submodule test device further includes a state analysis module 152.
  • the state analysis module 152 is used to determine the voltage stress state and current stress state of the test submodule during charging according to the voltage parameters and the current parameters.
  • the state analysis module 152 is further used to determine the current fluctuation state and the temperature rise state of the test submodule according to the current parameters and the temperature parameters.
  • the above scheme uses a test submodule and a test product submodule to build a towing architecture, uses the test submodule to charge the test product submodule, obtains the charging state parameters of the test product submodule during the charging process, and thus analyzes the operating state of the test product submodule.
  • the actual operating conditions of the energy storage valve submodule can be simulated, and the energy storage valve submodule can be tested for operation before it is put into use, thereby reducing the probability of a faulty energy storage valve submodule being put into the energy storage system and improving the operating reliability of the energy storage valve submodule.
  • Each module in the energy storage valve submodule test device can be implemented in whole or in part by software, hardware, or a combination thereof.
  • Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.
  • a computer device which may be a terminal, and its internal structure diagram may be shown in FIG16.
  • the computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected via a system bus.
  • the processor of the computer device is used to provide computing and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium.
  • the communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies.
  • WIFI wireless fidelity
  • NFC near field communication
  • the computer program is executed by the processor, a method for testing a submodule of an energy storage valve is implemented.
  • the display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen
  • the input device of the computer device may be a touch layer covered on the display screen, or a key, a trackball or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.
  • FIG. 16 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied.
  • the specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.
  • a computer device including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:
  • the accompanying test submodule is controlled to perform direct current charging on the test submodule; the charging state parameters of the test submodule during the charging process are obtained; and the operating state of the test submodule is determined according to the charging state parameters.
  • a computer readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:
  • the accompanying test submodule is controlled to perform direct current charging on the test submodule; the charging state parameters of the test submodule during the charging process are obtained; and the operating state of the test submodule is determined according to the charging state parameters.
  • a computer program product comprising a computer program, which, when executed by a processor, implements the following steps:
  • the accompanying test submodule is controlled to perform direct current charging on the test submodule; the charging state parameters of the test submodule during the charging process are obtained; and the operating state of the test submodule is determined according to the charging state parameters.
  • the above-mentioned computer equipment, storage medium and computer program product use the accompanying test submodule and the test product submodule to build a towing architecture, use the accompanying test submodule to charge the test product submodule, obtain the charging state parameters of the test product submodule during the charging process, and thus analyze and obtain the operating state of the test product submodule.
  • the actual operating conditions of the energy storage valve submodule can be simulated, and the energy storage valve submodule can be tested for operation before it is put into use, thereby reducing the time and cost of putting the faulty energy storage valve submodule into service.
  • the probability of the energy storage system is improved, and the operating reliability of the energy storage valve submodule is improved.
  • the present application also provides a storage valve submodule testing system, including a test submodule 202, a companion test submodule 204 and a processor (not shown in the figure), the test submodule 202 includes a first power module 601 and a first energy storage module 602 connected to each other, the companion test submodule 204 includes a second power module 603 and a second energy storage module 604 connected to each other, the high voltage end of the first power module 601 is connected to the high voltage end of the second power module 603, the low voltage end of the first power module 601 is connected to the low voltage end of the second power module 603, the control end of the first power module 601 and the control end of the second power module 603 are respectively connected to the processor (not shown in the figure), and the processor is used to test the test submodule according to the above-mentioned energy storage valve submodule testing method.
  • the specific test method implemented by the energy storage valve submodule test system is as shown in the above-mentioned embodiments, which will not be repeated here.
  • This solution uses the accompanying test submodule 204 and the sample submodule 202 to build a towing architecture, uses the accompanying test submodule 204 to charge the sample submodule 202, obtains the charging state parameters of the sample submodule 202 during the charging process, and thus analyzes and obtains the operating state of the sample submodule 202.
  • the actual operating conditions of the energy storage valve submodule can be simulated, and the energy storage valve submodule can be tested for operation before the energy storage valve submodule is put into use, thereby reducing the probability of a faulty energy storage valve submodule being put into the energy storage system and improving the operating reliability of the energy storage valve submodule.
  • the energy storage valve submodule testing system further includes an inductor L, and the high voltage end of the first power module 601 is connected to the high voltage end of the second power module 603 through the inductor L.
  • the companion test submodule 204 and the sample submodule 202 both include a power module part and an energy storage module part, and the charge and discharge control of the energy storage module is realized through the power conversion of the power module part.
  • the first end of the first power module 601 and the first end of the second power module 603 are connected through an inductor L, and the second end of the first power module 601 is connected to the second end of the second power module 603, thereby building a pair-pull architecture.
  • the processor has a current sampling function, so the high-voltage end of the first power module 601 can be connected to the processor and the inductor L, and the load current of the test submodule 202 during the charging process is collected by the processor, that is, the current sampling value is obtained, and then the duty cycle of the switch control signal of the accompanying test submodule 204 is adjusted according to the current sampling value.
  • the current sampling value can also be achieved through an additional current collector.
  • the high-voltage end of the first power module 601 only needs to be connected to the inductor L, and the current sampling value is obtained by wired or wireless communication between the processor and the current collector.
  • an inductor is arranged between the high-voltage end of the first power module and the second power module.
  • the test method under this structure can refer to the description of the energy storage valve submodule test method, which will not be repeated here.
  • the energy storage valve submodule testing system further includes an energy replenishment circuit 162 .
  • the energy replenishment circuit 162 is connected to a second energy storage module 604 (not shown).
  • the accompanying test submodule 204 is required to charge the test submodule 202 for a long time.
  • the electric energy stored in the energy storage module of the accompanying test submodule 204 may be too low and cannot meet the long-term charging demand. Therefore, the scheme of this embodiment needs to control the accompanying test submodule 204 to replenish power when the accompanying test submodule 204 has a need for replenishing power, so as to realize a long-term operation test.
  • This scheme by setting an energy replenishment circuit 162 at the accompanying test submodule 204, can start or end the charging of the accompanying test submodule 204 in real time according to actual needs during the test process, thereby increasing the charging operation time of the accompanying test submodule 204.
  • an energy replenishment circuit 162 is also provided in the energy storage valve submodule test system.
  • the energy replenishment circuit 162 replenishes power for the accompanying test submodule 204, which can effectively increase the endurance time of the accompanying test submodule 204, so that the energy storage valve submodule can perform long-term operation tests.
  • the energy compensation circuit 162 includes a switch device D1 and a current source LS.
  • the current source LS is connected to the second energy storage module 604 (not shown) of the companion test submodule 204 through the switch device D1 .
  • the current source LS is a power supply device that can provide a constant current to supplement the power of the accompanying test submodule 204.
  • the current source LS provided in the embodiment of the present application is a direct current source.
  • a switch device D1 is also provided in the energy supplement circuit 162, which can prevent the current of the accompanying test submodule 204 from being fed back into the current source LS, thereby improving the operational safety of the current source LS.
  • the specific type of the switch device D1 is not unique, as long as it is a device that prevents the current of the accompanying test submodule 204 from being fed back into the current source LS.
  • the switch device D1 includes a diode, and the anode of the diode is connected to the current source LS, and the cathode of the diode is connected to the second energy storage module 604.
  • the energy compensation circuit 162 specifically includes a switch device D1 and a current source LS connected in series, which has a simple structure and can effectively save the volume and circuit cost of the energy storage valve submodule test system.
  • the first power module 601 includes a first power unit and a first capacitor connected in parallel, the high voltage end of the first power unit is connected to the high voltage end of the second power module 603 , and the low voltage end of the first power unit is connected to the low voltage end of the second power module 603 .
  • the second power module 603 includes a second power unit and a second capacitor in parallel, the high voltage end of the second power unit is connected to the high voltage end of the first power module 601, and the low voltage end of the second power unit is connected to the low voltage end of the first power module 601.
  • the first power module 601 and the second power module 603 both include a power unit and a capacitor.
  • the first power module 601 includes a full-bridge power module or a half-bridge power module
  • the second power module 603 includes a full-bridge power module or a half-bridge power module.
  • the first power module 601 includes a first power switch device T1, a second power switch device T2 and a first capacitor C1.
  • the common end of the first power switch device T1 and the second power switch device T2 serves as a high-voltage end.
  • the input end of the first power switch device T1 is connected to the input end of the second power switch device T2, a processor (not shown) and a first end of the inductor L.
  • the output end of the first power switch device T1 is connected to the first end of the first capacitor C1 and the first end of the first energy storage module 602.
  • the output end of the second power switch device T2 serves as a low-voltage end and is connected to the second power module 603.
  • the output end of the second power switch device T2 is also connected to the second end of the first capacitor C1 and the second end of the first energy storage module 602.
  • the control end of the first power switch device T1 and the control end of the second power switch device T2 are respectively connected to the processor (not shown).
  • the common connection end of the first power switch device T1 and the second power switch device T2 is used as the high-voltage end of the first power module 601
  • the output end of the second power switch device T2 is used as the low-voltage end of the first power module 601, so as to connect the first energy storage module 602, the inductor L and the accompanying test sub-module 204.
  • the structure of the accompanying test sub-module 204 is consistent with the structure of the test product sub-module 202, and is mirror-symmetrical to form a pair-drag architecture.
  • both the test submodule 202 and the accompanying test submodule 204 are half-bridge structures, which can realize the drag test of the energy storage valve submodule under the half-bridge structure and improve the operating reliability of the energy storage valve submodule under the half-bridge structure.
  • the first power module 601 includes a third power switch device T3, a fourth power switch device T4, a fifth power switch device T5, a sixth power switch device T6 and a second capacitor C2, the input end of the third power switch device T3 is connected to the input end of the fourth power switch device T4, a processor (not shown) and a first end of the inductor L, the output end of the third power switch device T3 is connected to the first end of the second capacitor C2 and the first end of the first energy storage module 602, and the first energy storage module
  • the first end of block 602 is also connected to the input end of the fifth power switch device T5, the output end of the fifth power switch device T5 is connected to the input end of the sixth power switch device T6 and the second power module 603, the output end of the sixth power switch device T6 is connected to the second end of the first energy storage module 602, the output end
  • the solution of this embodiment is to connect the common The connection end is used as the high voltage end of the first power module 601, the common connection end of the fifth power switch device T5 and the sixth power switch device T6 is used as the low voltage end of the first power module 601, and the control end of each power switch device is used as the control end of the first power module 601.
  • the first energy storage module 602, the inductor L and the accompanying test submodule 204 are connected, and the structure of the accompanying test submodule 204 is consistent with that of the test product submodule 202, and is mirror-symmetrical to form a pair-pull architecture.
  • both the test submodule 202 and the accompanying test submodule 204 are full-bridge structures, which can realize the towing test of the energy storage valve submodule under the full-bridge structure and improve the operation reliability of the energy storage valve submodule of the full-bridge structure.

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Abstract

一种储能阀子模块测试方法、装置、系统、计算机设备、存储介质和计算机程序产品，采用陪试子模块和试品子模块搭建对拖架构，利用陪试子模块向试品子模块充电（步骤102），获取试品子模块在充电过程中的充电状态参数（步骤104），从而分析得到试品子模块的运行状态（步骤106）。

Description

储能阀子模块测试方法、装置、系统和计算机设备
相关申请
本申请要求2023年06月28日申请的，申请号为2023107799531，名称为“储能阀子模块测试方法、装置、系统和计算机设备”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及储能技术领域，特别是涉及一种储能阀子模块测试方法、装置、系统、计算机设备、存储介质和计算机程序产品。
背景技术
储能在电力系统的发、输、配、用等各个环节提供调频、调峰等应用，起到稳定电网频率、缓解电网阻塞、提高发电用电灵活性等作用。级联式储能系统具有模块化设计、容量利用率高、转换效率高、动态响应快、谐波含量小、系统运行稳定等优点，已成为当下研究热点并具备广阔的应用前景。
级联式储能系统的核心部件是集成功率模块和电池模块的储能阀子模块，储能阀子模块可靠运行，对于储能系统乃至电力系统的高可靠性具有重要意义。然而，相关技术中，储能阀子模块的运行可靠性较低。
申请内容
基于此，有必要提供一种储能阀子模块测试方法、装置、系统、计算机设备、存储介质和计算机程序产品。
一种储能阀子模块测试方法，包括：控制陪试子模块为试品子模块直流充电，其中，试品子模块包括相连的第一功率模块和第一储能模块，陪试子模块包括相连的第二功率模块和第二储能模块，第一功率模块的高压端连接第二功率模块的高压端，第一功率模块的低压端连接第二功率模块的低压端；获取试品子模块在充电过程中的充电状态参数；根据充电状态参数，确定试品子模块的运行状态。
上述方案，采用陪试子模块和试品子模块搭建对拖架构，利用陪试子模块向试品子模块充电，获取试品子模块在充电过程中的充电状态参数，从而分析得到试品子模块的运行状态。通过该方案，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，降低故障储能阀子模块投入储能系统的概率，提高储能阀子模块的运行可靠性。
在一些实施例中，控制陪试子模块为试品子模块直流充电，包括：在陪试子模块与试品子模块的电压差值大于第一预设阈值的情况下，控制陪试子模块为试品子模块正向模式充电；在陪试子模块与试品子模块的电压差值小于第二预设阈值的情况下，控制陪试子模块为试品子模块逆向模式充电；其中，第一预设阈值大于或等于第二预设阈值。
上述方案，在陪试子模块的电压大于试品子模块的电压，或者陪试子模块的电压小于试品子模块的电压的情况下，均可通过陪试子模块为试品子模块进行充电，提高试品子模块的充电测试可靠性。
在一些实施例中，控制陪试子模块为试品子模块正向模式充电，包括：控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通，以通过第二储能模块为试品子模块正向模式充电。
上述方案，控制陪试子模块的功率开关器件轮换导通的方式，可保持持续且较为稳定的直流电流为试品子模块充电。
在一些实施例中，第一功率模块的高压端通过电感连接第二功率模块的高压端，控制陪试子模块为试品子模块逆向模式充电，包括：控制陪试子模块向电感充电；控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通，以通过电感存储的电能和第二储能模块为试品子模块逆向模式充电。
上述方案，在陪试子模块的电压小于试品子模块的电压的情况下，首先控制试品子模块为电感充电，之后再以电感的电能，以及第二储能模块存储的电能传输到试品子模块，从而达到升压效果，保持持续且较为稳定的直流电流为试品子模块充电。
在一些实施例中，控制陪试子模块为试品子模块直流充电，包括：向试品子模块输入任意占空比和频率的开关控制信号，以及向陪试子模块输入固定频率的开关控制信号，控制陪试子模块向试品子模块直流充电。
上述方案，试品子模块可以以任意占空比和频率的开关控制信号进行充电测试，从而完成0至最高运行频率以及任意占空比的充电测试，丰富试品子模块的测试场景。
在一些实施例中，储能阀子模块测试方法还包括：根据试品子模块的第一端的电流采样值以及预设参考电流，调整陪试子模块的开关控制信号的占空比。
上述方案，陪试子模块在以固定频率的开关控制信号通断为子模块充电时，还能结合实际反馈的电流采样值，实时调整开关控制信号的占空比，提高试品子模块的测试可靠性。
在一些实施例中，充电状态参数包括电流参数、电压参数、温度参数中的至少一种。
上述方案，充电状态参数包括电流参数、电压参数、温度参数中的至少一种，从而可根据电流参数、电压参数、温度参数中的至少一种，完成试品子模块的相应测试内容，可有效丰富测试内容。
在一些实施例中，根据充电状态参数，确定试品子模块的运行状态，包括：根据电压参数和电流参数，确定试品子模块充电过程中的电压应力状态和电流应力状态。
上述方案，可根据试品子模块在充电过程中的电压参数实现电压应力测试，通过电流参数实现电流应力测试，从而确定储能阀子模块的电压应力状态和电流应力状态，提高试品子模块投入使用时的运行可靠性。
在一些实施例中，根据电流参数和温度参数，确定试品子模块的电流波动状态和温升状态。
上述方案，可根据试品子模块在充电过程中的电流参数实现电流波动状态测试，通过温度参数实现温升测试，从而确定储能阀子模块的电流波动状态和温升状态，提高试品子模块投入使用时的运行可靠性。
在一些实施例中，储能阀子模块测试方法还包括：在陪试子模块有补电需求的情况下，控制陪试子模块进行补电。
上述方案，无论是测试之前，还是测试过程中，在陪试子模块有补电需求的情况下，均可为陪试子模块进行补电，可有效提高储能阀子模块的测试时长。
在一些实施例中，储能阀子模块测试方法还包括：控制试品子模块对陪试子模块放电；获取试品子模块在放电过程中的放电状态参数；根据放电状态参数，确定试品子模块的运行状态。
上述方案，还可通过控制试品子模块为陪试子模块充电，实现试品子模块的放电测试，进一步提高试品子模块投入使用时的运行可靠性。
一种储能阀子模块测试装置，包括：充电控制模块，用于控制陪试子模块为试品子模块直流充电，其中，试品子模块包括相连的第一功率模块和第一储能模块，陪试子模块包括 相连的第二功率模块和第二储能模块，第一功率模块的高压端连接第二功率模块的高压端，第一功率模块的低压端连接第二功率模块的低压端；参数获取模块，用于获取试品子模块在充电过程中的充电状态参数；充电状态参数用于确定试品子模块的运行状态。
一种计算机设备，包括存储器和处理器，存储器存储有计算机程序，处理器执行计算机程序时实现上述储能阀子模块测试方法的步骤。
一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述储能阀子模块测试方法的步骤。
一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现上述储能阀子模块测试方法的步骤。
一种储能阀子模块测试系统，包括试品子模块、陪试子模块和处理器，试品子模块包括相连的第一功率模块和第一储能模块，陪试子模块包括相连的第二功率模块和第二储能模块，第一功率模块的高压端连接第二功率模块的高压端，第一功率模块的低压端连接第二功率模块的低压端，第一功率模块的控制端和第二功率模块的控制端分别连接处理器，处理器用于根据上述的储能阀子模块测试方法对试品子模块进行测试。
上述方案，采用陪试子模块和试品子模块搭建对拖架构，利用陪试子模块向试品子模块充电，获取试品子模块在充电过程中的充电状态参数，从而分析得到试品子模块的运行状态。通过该方案，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，降低故障储能阀子模块投入储能系统的概率，提高储能阀子模块的运行可靠性。
在一些实施例中，储能阀子模块测试系统还包括电感，第一功率模块的高压端通过电感连接第二功率模块的高压端。
上述方案，在第一功率模块和第二功率模块高压端之间设置有电感，以使得陪试子模块的电压较低时，仍能通过电感储能，实现对试品子模块的充电，提高陪试子模块对试品子模块进行充电的充电可靠性。
在一些实施例中，储能阀子模块测试系统还包括补能电路，补能电路连接第二储能模块。
上述方案，在储能阀子模块测试系统中还设置有补能电路，通过补能电路为陪试子模块的第二储能模块补电，可有效提高陪试子模块的续航时间，使得储能阀子模块可进行长时间的运行测试。
在一些实施例中，补能电路包括开关器件和电流源，电流源通过开关器件连接第二储能模块。
上述方案，补能电路具体包括串联的开关器件和电流源，结构简单，可有效节约储能阀子模块测试系统的体积以及电路成本。
在一些实施例中，第一功率模块包括并联的第一功率单元和第一电容，第一功率单元的高压端连接第二功率模块的高压端，第一功率单元的低压端连接第二功率模块的低压端。
和/或，在一些实施例中，第二功率模块包括并联的第二功率单元和第二电容，第二功率单元的高压端连接第一功率模块的高压端，第二功率单元的低压端连接第一功率模块的低压端。
上述方案，第一功率模块和第二功率模块均包括功率单元和电容，通过该种测试架构搭建，可实现功率模块包括功率单元和电容这一类型的储能阀子模块的测试，从而提高该类型储能阀子模块的运行可靠性。
在一些实施例中，第一功率模块包括全桥功率模块或半桥功率模块，第二功率模块包括全桥功率模块或半桥功率模块。
上述方案，试品子模块和陪试子模块均可分别为半桥结构和全桥结构，可实现半桥结构下储能阀子模块的对拖测试，或者是全桥结构下储能阀子模块的对拖测试，具有较高的适用范围。
附图说明
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1为本申请一些实施例中储能阀子模块测试方法的流程示意图；
图2为本申请一些实施例中储能阀子模块测试系统结构示意图；
图3为本申请另一些实施例中储能阀子模块测试方法的流程示意图；
图4为本申请又一些实施例中储能阀子模块测试方法的流程示意图；
图5为本申请一些实施例中储能阀子模块测试系统等效电路结构示意图；
图6为本申请另一些实施例中储能阀子模块测试系统结构示意图；
图7为本申请一些实施例中正向模式充电时电感电流波形示意图；
图8为本申请一些实施例中逆向模式充电时电感电流波形示意图；
图9为本申请一些实施例中开关控制信号注入示意图；
图10为本申请再一些实施例中储能阀子模块测试方法的流程示意图；
图11为本申请另一些实施例中储能阀子模块测试方法的流程示意图；
图12为本申请一些实施例中储能阀子模块测试装置结构示意图；
图13为本申请另一些实施例中储能阀子模块测试装置结构示意图；
图14为本申请又一些实施例中储能阀子模块测试装置结构示意图；
图15为本申请再一些实施例中储能阀子模块测试装置结构示意图；
图16为本申请一些实施例中计算机设备内部结构示意图；
图17为本申请又一些实施例中储能阀子模块测试系统结构示意图；
图18为本申请再一些实施例中储能阀子模块测试系统结构示意图；
图19为本申请又一些实施例中储能阀子模块测试系统结构示意图；
图20为本申请再一些实施例中储能阀子模块测试系统结构示意图。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连” “连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，高压直挂储能由于具有高度模块化的结构，能够满足高效率、高可靠性、经济性和安全性需求，逐渐得到发展和应用。高压直挂储能系统中，其核心部分为储能阀子模块，每一储能阀子模块均包括功率部分和储能部分，多个储能阀子模块之间连接，搭建形成储能系统。较为典型的，储能阀子模块通过级联的方式，搭建形成级联式储能系统。因此，储能阀子模块的可靠运行直接影响到储能系统的运行，如何提高储能阀子模块的运行可靠性显得尤为重要。
储能阀子模块除了在使用过程中，由于电网故障、操作不当或者元器件老化等，出现运行故障之外，还有可能接入储能系统之前，储能阀子模块本身就已经存在故障。因此，为提高储能子模块的运行可靠性，降低储能阀子模块接入储能系统故障率，储能阀子模块在接入储能系统之前，对储能阀子模块进行检测显得尤为重要。
基于上述考虑，本申请的技术方案提供一种储能阀子模块测试方法，在进行测试时，选取两个相同类型的储能阀子模块，将其中一个作为陪试子模块，另一个作为试品子模块，将两个储能阀子模块连接，搭建形成对拖架构，利用陪试子模块为试品子模块充电，在充电过程中获取试品子模块的充电状态参数，最终以充电状态参数，确定试品子模块的运行状态。
通过上述方式，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，确定储能阀子模块是否发生故障，降低故障储能阀子模块投入储能系统的概率，提高储能阀子模块的运行可靠性。
进一步地，在测试过程中，试品子模块还可以向陪试子模块放电，相应的，此时获取试品子模块的放电状态参数，以放电状态参数确定试品子模块的运行状态，从而完成对试品子模块的放电测试。从而可以进一步降低故障储能阀子模块投入储能系统的概率，进一步提高储能阀子模块的运行可靠性。
本申请提供的储能阀子模块应用在储能系统中，具体而言，储能阀子模块应用在电化学储能系统中，也即通过电池所完成的能量储存、释放与管理的储能系统。进一步地，电化学储能系统的类型并不是唯一的，只要是需要利用储能阀子模块搭建的电化学储能系统均可。例如，在一个较为详细的实施例中，电化学储能系统包括高压直挂储能系统。为了便于理解 本申请的技术方案，下面实施例中均可理解为储能阀子模块应用在高压直挂储能系统中。
请参阅图1，一种储能阀子模块测试方法，包括步骤102、步骤104和步骤106。
步骤102，控制陪试子模块为试品子模块直流充电。
具体地，试品子模块包括相连的第一功率模块和第一储能模块，陪试子模块包括相连的第二功率模块和第二储能模块，第一功率模块的高压端连接第二功率模块的高压端，第一功率模块的低压端连接第二功率模块的低压端。陪试子模块即为用来为待测储能阀子模块提供充电电能或者存储释放电能的储能阀子模块。试品子模块即为需要进行测试的储能阀子模块，也即待测储能阀子模块。
进一步地，在另外的实施例中，为提高陪试子模块向试品子模块进行充电时的充电可靠性，使得陪试子模块在电压较低，甚至低于试品子模块的电压的情况下，仍能向试品子模块充电，可结合参阅图2，将陪试子模块204的第二功率模块的高压端(图未示)通过电感L连接试品子模块202的第一功率模块的高压端(图未示)。
应当指出的是，在实际测试过程中，两个储能阀子模块搭建的对拖架构中，试品子模块和陪试子模块的定义并不是唯一的，若两个储能阀子模块均需要进行测试，则可将任意一个储能阀子模块作为试品子模块，将另外一个储能阀子模块作为陪试子模块进行测试。在试品子模块测试完成之后，将其作为陪试子模块，将之前的陪试子模块作为试品子模块，切换实现另一个储能阀子模块的测试。
储能阀子模块包括储能模块和功率模块，在实际测试过程中，处理器只需分别向陪试子模块的第二储能模块和第二功率模块，以及试品子模块的第一储能模块和第一功率模块发送控制信号，使得陪试子模块的第二储能模块中存储的电能，传输到试品子模块，实现试品子模块的充电即可。
可以理解，处理器的具体形式并不是唯一的，在一个实施例中，处理器可以是独立储能阀子模块额外设置，其可以是MCU(Microcontroller Unit，微控制单元)、CPU(Central Processing Unit，中央处理器)等。在另外的实施例中，处理器还可以集成设置于储能阀子模块的控制板卡中，具体不做限定，结合实际需求进行选择即可。
步骤104，获取试品子模块在充电过程中的充电状态参数。
具体地，充电状态参数即为试品子模块在充电过程中，与充电状态相关的参数。其可以是在测试过程中施加到试品子模块的充电相关参数，也可以是在测试过程中，随着充电时间的变化而发生变化的参数，具体不做限定，结合实际需求进行选择即可。
可以理解，充电状态参数的获取方式并不是唯一的，可以是通过试品子模块自身的检测器件检测，处理器与试品子模块进行信息交互获取，也可以是在试品子模块中额外设置状态参数采集器的方式采集获取，具体不做限定，结合实际充电状态参数的类型进行选择即可。例如，在一个较为详细的实施例中，可以是处理器与储能模块的电池管理系统进行信息交互，从而获取储能模块的温度参数、充电电流参数以及充电电压参数等，并将这些参数作为充电状态参数。
步骤106，根据充电状态参数，确定试品子模块的运行状态。
具体地，在处理器获取充电状态参数之后，将会结合充电状态参数进行分析，确定当前试品子模块的运行状态，也即确定试品子模块是否正常运行。若确定试品子模块正常运行，则可将试品子模块正常投入储能系统中使用，若试品子模块未正常运行，则可通过输出报警提示信息等方式告知工作人员，以便工作人员及时进行检修。
应当指出的是，试品子模块的运行状态并不是唯一的，根据所获取的充电状态参数类型不同，最终分析得到的运行状态也会有所区别。例如，在一个较为详细的实施例中，运行状态可以包括充电过程中电压、电流或者温度变化相关的状态。
可以理解，在一个实施例中，对储能阀子模块进行测试时，还可以是处理器将运行状态参数推送给工作人员，具体可通过显示终端显示或者语音提示信息等方式实现，在此不做限定。之后由工作人员结合所展示的充电状态参数进行分析，最终确定试品子模块的运行状态，从而决定试品子模块是否适合投入储能系统使用。
上述方案，采用陪试子模块和试品子模块搭建对拖架构，利用陪试子模块向试品子模块充电，获取试品子模块在充电过程中的充电状态参数，从而分析得到试品子模块的运行状态。通过该方案，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，降低故障储能阀子模块投入储能系统的概率，提高储能阀子模块的运行可靠性。
请参阅图3，在一些实施例中，储能阀子模块测试方法还包括步骤302。
步骤302，在陪试子模块有补电需求的情况下，控制陪试子模块进行补电。
具体地，补电即补充电能，也即为陪试子模块进行充电。本申请实施例所公开的测试方法中，为尽可能模拟试品子模块的各种工况，需要陪试子模块为试品子模块进行较长时间的充电，因此，陪试子模块的储能模块存储的电能可能出现过低的情况，无法满足长时间充电需求。故本实施例的方案，需要在陪试子模块有补电需求的情况下，控制陪试子模块补电， 以实现长时运行试验。
可以理解，判断陪试子模块是否有补电需求的方式并不是唯一的，在一个实施例中，可以是测试开始之前，由工作人员设定预设轮回次数的充电操作，一个轮回次数包括：试品子模块对应设置有多个不同的开关控制信号，若试品子模块分别以所设置的各个开关控制信号完成一次充电测试，则认为完成一个轮回次数的测试。之后处理器可结合预设轮回次数以及陪试子模块的当前电量，判断陪试子模块是否有补电需求。若当前电量可以满足预设轮回次数的充电需求，则无需进行补电，若当前电量不满足预设轮回次数的充电需求，则需要为陪试子模块进行补电。
在另外的实施例中，还可以是在实际测试过程中，实时检测当前陪试子模块的剩余电量，在剩余电量不满足下一次充电需求的情况下，认为陪试子模块有补电需求的情况，此时开启为陪试子模块补电。
应当指出的是，陪试子模块进行补电的方式并不是唯一的，在一个较为详细的实施例中，可以是为陪试子模块接入一个外部补电装置，控制陪试子模块的功率开关器件通断，利用外部补电装置为陪试子模块充电，从而实现补电操作。
在另外的实施例中，还可以是在陪试子模块处搭建补能电路，在实际测试过程中，结合陪试子模块的剩余电量，开启补能电路为陪试子模块补电。
上述方案，无论是测试之前，还是测试过程中，在陪试子模块有补电需求的情况下，均可为陪试子模块进行补电，可有效提高储能阀子模块的测试时长。
请参阅图4，在一些实施例中，步骤102包括步骤402和步骤404。
步骤402，在陪试子模块与试品子模块的电压差值大于第一预设阈值的情况下，控制陪试子模块为试品子模块正向模式充电。
步骤404，在陪试子模块与试品子模块的电压差值小于第二预设阈值的情况下，控制陪试子模块为试品子模块逆向模式充电。
具体地，第一预设阈值大于或等于第二预设阈值。在测试过程中，处理器能够实时获取陪试子模块和试品子模块的电压，结合陪试子模块的电压和试品子模块的电压差值，确定当前试品子模块所需的充电模式，进而控制陪试子模块以不同的运行状态为试品子模块充电。
本实施例的方案中，正向模式充电指的是陪试子模块的电压和试品子模块的电压相差较大，电能从较高电压的陪试子模块传输到较低电压的试品子模块，为试品子模块进行充电的过程。而逆向模式充电则指的是陪试子模块的电压大于试品子模块的电压，但两者相差 较小，电能从较高电压的陪试子模块传输到较低电压的试品子模块，为试品子模块进行充电的过程(该过程可能会随着充电时间的增加，陪试子模块的电压小于试品子模块的电压)；或者是陪试子模块的电压小于试品子模块的低压的情况下，电能从较低电压的陪试子模块传输到较高电压的试品子模块，为试品子模块充电的过程。
应当指出的是，第一预设阈值和第二预设阈值的具体大小并不是唯一的，两者可以设置相同，例如均设置为0；也可以设置不同，例如，在一个较为详细的实施例中，可将第一预设阈值设置为大于0的电压阈值，第二预设阈值设置为小于0的电压阈值，具体结合实际需求进行选择即可。
通过本实施例的方案，整个测试系统能够实现全能量运行，即无论陪试子模块的电压大小为多少，都能够实现陪试子模块向试品子模块的直流充电。
上述方案，在陪试子模块的电压大于试品子模块的电压，或者陪试子模块的电压小于试品子模块的电压的情况下，均可通过陪试子模块为试品子模块进行充电，提高试品子模块的充电测试可靠性。
在一些实施例中，控制陪试子模块为试品子模块正向模式充电，包括：控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通，以通过陪试子模块的储能模块为试品子模块正向模式充电。
具体地，以陪试子模块未接入补能电路，且陪试子模块和试品子模块之间接入电感为例进行说明，陪试子模块和试品子模块搭建的对拖结构，可以等效如图5所示。其中，u1、u2为试品子模块和陪试子模块的电压，r1、r2为试品子模块和陪试子模块的内阻，iL为线路电阻，L为电感，iL为电感电流，d1、d2分别为试品子模块和陪试子模块的开关控制信号的占空比。通过基尔霍夫定律可得电流稳态运行点满足：
d2u2-(r1+r2+rl)iL＝d1u1
故在实际测试过程中，通过改变试品子模块和陪试子模块开关控制信号的占空比，维持d2u2-(r1+r2+rl)iL＝d1u1的情况下，即可将陪试子模块输出的电能，等效传输到试品子模块，实现为试品子模块的充电操作。
应当指出的是，控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通的方式并不是唯一的，结合试品子模块和陪试子模块的功率模块结构不同而有所区别，为了便于理解本申请的技术方案，下面以半桥式功率模块为例进行解释说明。
请结合参阅图6，试品子模块包括第一功率模块601、第一储能模块602，而陪试子 模块包括第二功率模块603、第二储能模块604。第一功率模块601和第二功率模块603的结构可以设置相同，也可以设置不同，结合实际需求确定即可。
图6以第一功率模块601和第二功率模块603的结构一致为例，第一功率模块601包括功率单元和第一电容C1，进一步地，功率单元为半桥结构，包括第一功率开关器件T1和第二功率开关器件T2，第一功率开关器件T1和第二功率开关器件T2的公共端作为高压端，对应的，第一功率开关器件T1的输入端连接第二功率开关器件T2的输入端、处理器(图未示)和电感L的第一端，第一功率开关器件T1的输出端连接第一电容C1第一端和第一储能模块602的第一端，第二功率开关器件T2的输出端作为低压端，连接第二功率模块603，第二功率开关器件T2的输出端还连接第一电容C1的第二端和第一储能模块602的第二端，第一功率开关器件T1的控制端和第二功率开关器件T2的控制端分别连接处理器(图未示)。
若第一储能模块602的第一端为正极，第一储能模块602的第二端为负极，在实际运行中则有：处理器输出开关控制信号控制第一功率开关器件T1导通，试品子模块进入充电模式，此时处理器输出开关控制信号控制陪试子模块的两个功率开关器件轮换导通。可结合参阅图7，d2表示陪试子模块的开关控制信号的占空比，T2表示陪试子模块的开关控制信号的周期，也即1/f，其中f为频率。在陪试子模块中与第二储能模块604的正极连接的功率开关器件导通的情况下，施加到电感两端的电压为正值，流过电感的电流升高；若处理器控制陪试子模块中与第二储能模块604的负极连接的功率开关器件导通，此时施加在电感两端电压为负值，流过电感的电流下降。因为电感电流不能突变，所以电流方向在短时间内不会发生改变，流过电感的电流呈在预设参考电流上下波动，此时可保持持续且较为稳定的直流电流为试品子模块正向充电。
可以理解，上述功率单元中，第一功率开关器件T1和第二功率开关器件T2的具体类型并不是唯一的，可以是MOS(Metal-Oxide-Semiconductor。金属-氧化物-半导体)管或者IGBT(Insulated Gate Bipolar Transistor，绝缘栅双极型晶体管)等，具体不做限定。
上述方案，控制陪试子模块的功率开关器件轮换导通的方式，使得流过电感的电流交替的升高和下降，由于电感电流不能突变，使得电流方向在短时间内不会发生改变，从而保持持续且较为稳定的直流电流为试品子模块充电。
在一些实施例中，第一功率模块的高压端通过电感连接第二功率模块的高压端，控制陪试子模块为试品子模块逆向模式充电，包括：控制陪试子模块向电感充电；控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通，以通过电感存储的电能和陪 试子模块的储能模块为试品子模块逆向模式充电。
具体地，为了便于理解本实施例的技术方案，下面同样以陪试子模块与试品子模块之间设置电感，功率模块包括半桥式功率模块进行解释说明。本实施例的方案，在陪试子模块与试品子模块的电压差值小于第二预设阈值的情况下，首先控制陪试子模块为电感进行充电。具体而言，处理器首先控制试品子模块中，与第一储能模块602的负极连接的第二功率开关器件T2导通，同时控制陪试子模块中，与第二储能模块604的正极连接的功率开关器件导通，此时陪试子模块的电能传输到电感进行充能。
在这之后，处理器控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通。具体而言，处理器控制试品子模块的第一功率开关器件T1导通，输入试品子模块的电能包括电感存储的电能以及第二储能模块604存储的电能，从而达到升压效果，实现陪试子模块向试品子模块的逆向模式充电。
具体可结合参阅图8，d1表示试品子模块的开关控制信号的占空比，T1表示试品子模块的开关控制信号的周期，d2表示陪试子模块的开关控制信号的占空比，T2表示陪试子模块的开关控制信号的周期。在试品子模块的开关控制信号的频率设置过低时，第一功率开关器件会长时间导通，相应的，给电感充电的时间较短。在陪试子模块的两个功率开关器件轮换导通的过程中，电感两端的电压均为负值，会导致电流长时持续降低。故在一个较为详细的实施例中，需要设置合适的开关控制信号的频率，减少第一功率开关器件的导通时长，使得流过电感的电流在预设参考电流上下波动，实现持续稳定的逆向模式充电。
上述方案，在陪试子模块的电压小于试品子模块的电压的情况下，首先控制试品子模块为电感充电，之后再以电感的电能，以及陪试子模块的储能模块存储的电能传输到试品子模块，从而达到升压效果，保持持续且较为稳定的直流电流为试品子模块充电。
在一些实施例中，控制陪试子模块为试品子模块直流充电，包括：向试品子模块输入任意占空比和频率的开关控制信号，以及向陪试子模块输入固定频率的开关控制信号，控制陪试子模块向试品子模块直流充电。
具体地，可结合参阅图9，本实施例的方案，在对试品子模块进行测试的过程中，为得到试品子模块在各种不同工况下的充电状态参数，提高试品子模块的测试准确性。在测试过程中，陪试子模块和试品子模块分开调制，控制试品子模块开启进行充电时，可以向试品子模块输入任意占空比(d1)和任意频率(f)的开关控制信号，而陪试子模块则以较高的固定频率的开关控制信号控制其第二功率模块运行，从而为试品子模块进行充电。
应当指出的是，开关控制信号的类型并不是唯一的，在一个较为详细的实施例中，开关控制信号包括PWM(Pulse Width Modulation，脉冲宽度调制)信号。处理器中设置有PWM控制器或者处理器具备PWM调制功能，在实际测试过程中，PWM控制器根据测试需求生成任意频率和任意占空比的开关控制信号，控制试品子模块的第一功率模块运行，完成直流充电。
较为详细的，在一个实施例中，试品子模块所需的开关控制信号的频率以及占空比可以预先设置。例如，将开关控制信号的频率设置为10Hz(赫兹)、20Hz……1000Hz，那么，在实际测试过程中，分别需要以10Hz、20Hz…直至1000Hz的频率，控制试品子模块运行，完成每一个所设置频率下的充电测试。
上述方案，试品子模块可以以任意占空比和频率的开关控制信号进行充电测试，从而完成0至最高运行频率以及任意占空比的充电测试，丰富试品子模块的测试场景。
在一些实施例中，储能阀子模块测试方法还包括：根据试品子模块的第一端的电流采样值以及预设参考电流，调整陪试子模块的开关控制信号的占空比。
具体地，请继续参阅图9，本实施例的方案，陪试子模块的开关控制信号的占空比跟随试品子模块反馈的负载电流的变化而变化，具体调整方式为PI(proportional Integral，比例积分)调节，处理器具备PI调节功能或设置有PI调节器，处理器获取试品子模块的第一端与电感之间的电流值，也即电流采样值(iL)，预设参考电流(I_ref)与电流采样值会产生一个差值，该差值进入PI调节器进行调节。PI调节器的能够使输入值跟踪参考值，即在这里PI调节器使预设参考电流与电流采样值的差值尽可能小，即电流采样值的值一直跟踪预设参考电流的值，实现了稳定的直流充电电流。经过PI调节器输出获得预设参考电流与电流采样值的差值很小时的占空比值，将其作为陪试子模块的开关控制信号的占空比，输入PWM控制器中产生调制波，实现陪试子模块的控制。
应当指出的是，预设参考电流的大小并不是唯一的，根据实际测试需求，可将预设参考电流设置为任意大小，例如0至陪试子模块的最大运行电流，从而实现试品子模块从0至最大运行电流的充分测试。
上述方案，陪试子模块在以固定频率的开关控制信号通断为子模块充电时，还能结合实际反馈的电流采样值，实时调整开关控制信号的占空比，提高试品子模块的测试可靠性。
在一些实施例中，充电状态参数包括电流参数、电压参数、温度参数中的至少一种。具体地，电流参数即为试品子模块在充电运行状态下的电流值；电压参数即为试品子模块在 充电运行状态下的电压值；温度参数即为试品子模块在充电运行状态下，储能模块中电池的温度值。
本实施例的方案，在试品子模块进行对拖测试，由陪试子模块为其充电的过程中，可以获取电流参数、电压参数、温度参数中的至少一种，从而以电流参数、电压参数、温度参数中的一种或者多种，进行试品子模块的运行状态分析，从而确定试品子模块是否能够投入储能系统使用。
上述方案，充电状态参数包括电流参数、电压参数、温度参数中的至少一种，从而可根据电流参数、电压参数、温度参数中的至少一种，完成试品子模块的相应测试内容，可有效丰富测试内容。
请参阅图10，在一些实施例中，步骤106包括步骤1061。步骤1061，根据电压参数和电流参数，确定试品子模块充电过程中的电压应力状态和电流应力状态。
具体地，电压应力就是在应用中的电压与零件规格值的比值，也即工作电压与额定电压的比值。电流应力就是在应用中的电流与零件规格值的比值，也即工作电流与额定电流的比值。本实施例的方案，通过实时获取的电压参数和电流参数，分析得到试品子模块的电压应力状态和电流应力状态，也即实时的电压应力和电流应力。
应当指出的是，电压应力状态和电流应力状态的具体形式并不是唯一的，在一个实施例中，电压应力状态可以是电压应力的具体电压应力的数值，或者是电压应力是否正常的分析结果等，具体不做限定。同样的，电流应力状态可以是电压应力的具体电流应力的数值，或者是电流应力是否正常的分析结果等，具体不做限定。
在一个较为详细的实施例中，根据实时获取的电压应力和电流应力，可以进一步分析试品子模块的电压参数或者电流参数是否发生异常。具体而言，可分别为电压应力和电流应力设置一个阈值，在电压应力超过对应阈值时，确认电压参数异常，在电流应力超过对应阈值时，确认电流参数异常。
可以理解，阈值的大小并不是唯一的，具体不做限定。例如，在一个较为详细的实施例中，可将电压应力对应的阈值设置为90％，电流应力对应的阈值设置为80％。
上述方案，可根据试品子模块在充电过程中的电压参数实现电压应力测试，通过电流参数实现电流应力测试，从而确定储能阀子模块的电压应力状态和电流应力状态，提高试品子模块投入使用时的运行可靠性。
请参阅图10，在一些实施例中，步骤106还包括步骤1063。步骤1063，根据电流参 数和温度参数，确定试品子模块的电流波动状态和温升状态。
具体地，电流波动即为当前获取的电流值相对上一次获取的电流值所发生的波动。温升即为当前次获取的温度参数相对上一次获取的温度参数所上升的数值。与上述电压应力状态和电流应力状态类似，电流波动状态可以是一个具体地电流发生波动的数值，或者电流波动是否正常的分析结果；温升状态可以是一个具体地温度上升数值，或者温升是否正常的分析结果，具体不做限定。
较为详细的，在一个实施例中，处理器预存有电流波动标准阈值和温升标准阈值。处理器在得到电流波动值或者温升值之后，分别与电流波动标准阈值和温升标准阈值进行比较分析，在电流波动值小于或等于电流波动标准阈值的情况下，认为电流波动正常，在温升值小于或等于温升标准阈值的情况下，认为温升正常。
上述方案，可根据试品子模块在充电过程中的电流参数实现电流波动状态测试，通过温度参数实现温升测试，从而确定储能阀子模块的电流波动状态和温升状态，提高试品子模块投入使用时的运行可靠性。
应当指出的是，在一个较为详细的实施例中，通过上述测试方式，获取电流参数、电压参数、温度参数中的至少一种之后，还可结合电流参数、电压参数、温度参数中的一种或者多种，分析试品子模块能否正常进行充电。具体分析方式并不是唯一的，可以是通过分析电压参数的变化状态、电流参数的变化状态或者温度参数的变换状态等的方式实现。在另外的实施例中，还可以是进一步根据电压应力状态、电流应力状态、电流波动状态或者温升状态进行分析得到，具体不做限定。
请参阅图11，在一些实施例中，储能阀子模块测试方法还包括步骤112、步骤114和步骤116。步骤112，控制试品子模块对陪试子模块放电。步骤114，获取试品子模块在放电过程中的放电状态参数。步骤116，根据放电状态参数，确定试品子模块的运行状态。
具体地，在对试品子模块进行测试时，除了上述实施例中的充电测试之外，还可以控制试品子模块为陪试子模块充电，获取在这一过程中的放电状态参数，结合放电状态参数实现试品子模块的放电测试。
可以理解，放电状态参数同样可以包括电流参数、电压参数、温度参数中的至少一种，结合电流参数、电压参数、温度参数中的一种或者多种，实现电压应力测试、电流应力测试、电流波动测试以及温升测试中的一种或者多种，具体不做限定。
应当指出的是，在一个较为详细的实施例中，在对试品子模块进行放电测试时，具体 操作与上述实施例中的充电操作类似，只需将本实施例中的试品子模块看作上述实施例中的陪试子模块，将本实施例中的陪试子模块看作上述实施例中的试品子模块。只需输出对应的控制信号，控制试品子模块为陪试子模块充电即可，具体不再赘述。
上述方案，还可通过控制试品子模块为陪试子模块充电，实现试品子模块的放电测试，进一步提高试品子模块投入使用时的运行可靠性。
为了便于理解本申请的技术方案，下面结合较为详细的实施例中，对本申请进行解释说明。
本实施例的方案中，试品子模块和陪试子模块均为半桥结构的储能阀子模块，搭建形成对拖架构，具体结构可参阅图6。在该种架构下，处理器首先获取陪试子模块的储能模块中存储的电量，分析其是否能否完成预设轮回次数的充电测试，若不能，则通过外部充电装置为陪试子模块进行补电，使其所存储的电量能够完成数个轮回次数的充电测试；若能，则直接开启充电测试。
充电测试过程中，处理器根据预先设置的占空比和频率，向试品子模块输出开关控制信号，控制试品子模块的第一功率模块601的功率单元中，第一功率开关器件T1和第二功率开关器件T2的导通或者关断。在这一过程中，实时获取试品子模块的电流采样值，并与预设参考电流进行比较分析，使得电流采样值跟随预设参考电流，从而经过PI调节得到陪试子模块所需的占空比，以此向陪试子模块输出固定频率的开关控制信号，控制陪试子模块的第二功率模块603的功率单元中，功率开关器件通断，进而实现陪试子模块对试品子模块的直流充电。
在充电过程中，处理器还能获取试品子模块和陪试子模块的电压值并进行分析，在陪试子模块与试品子模块的电压差值大于第一预设阈值的情况下，开启正向模式充电。此时，处理器通过开关控制信号控制第一功率开关器件T1导通，第二功率开关器件T2断开，通过控制陪试子模块的两个功率开关器件轮换导通的方式，保持持续且较为稳定的直流充电。
陪试子模块与试品子模块的电压差值小于第二预设阈值的情况下，首先控制试品子模块的第二功率开关器件T2导通，陪试子模块中与第二储能模块604的正端连接的功率开关器件导通，为电感L充电。在这之后，切换控制试品子模块的第一功率开关器件T1导通，陪试子模块的两个开关器件交替导通，将电感L存储的电能和陪试子模块的第二储能模块存储的电能传输到试品子模块，达到升压效果，也即实现逆向模式充电。
在正向模式充电或者逆向模式充电的过程中，处理器实时获取试品子模块的电压参 数、电流参数以及温度参数，根据实时获取的电压参数、电流参数和温度参数中的一种或多种，分析试品子模块是否能够正常充电。根据电压参数或者电流参数进行计算，分别得到电压应力和电流应力，之后再与对应的阈值进行比较分析，得到充电过程中电压参数或者电流参数是否正常的结果。以及根据电流参数或者温度参数进行计算，得到电流波动值或者温升值，将其分别与电流波动标准阈值和温升标准阈值进行比较分析，进而判断出试品子模块是否存在充电异常。最终，在上述各项检测均正常的情况下，确定试品子模块正常，能够投入储能系统使用，具有较高的运行可靠性。
应该理解的是，虽然如上所述的各实施例所涉及的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，如上所述的各实施例所涉及的流程图中的至少一部分步骤可以包括多个步骤或者多个阶段，这些步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤中的步骤或者阶段的至少一部分轮流或者交替地执行。
基于同样的技术构思，本申请实施例还提供了一种用于实现上述所涉及的储能阀子模块测试方法的储能阀子模块测试装置。该装置所提供的解决问题的实现方案与上述方法中所记载的实现方案相似，故下面所提供的一个或多个储能阀子模块测试装置实施例中的具体限定可以参见上文中对于储能阀子模块测试方法的限定，在此不再赘述。
请参阅图12，一种储能阀子模块测试装置，包括：充电控制模块122和参数获取模块124。
充电控制模块122用于控制陪试子模块为试品子模块直流充电；参数获取模块124用于获取试品子模块在充电过程中的充电状态参数；充电状态参数用于确定试品子模块的运行状态。具体而言，储能阀子模块测试装置可以是获取充电状态参数之后，向用户推送，由用户结合充电状态参数确定试品子模块的运行状态；也可以是获取充电状态参数，进一步根据充电状态参数确定试品子模块的运行状态，最终推送运行状态结果，在此不做限定。
请参阅图13，在一些实施例中，储能阀子模块测试装置还包括补电模块132。
补电模块132用于在陪试子模块有补电需求的情况下，控制陪试子模块进行补电。
在一些实施例中，充电控制模块122还用于在陪试子模块与试品子模块的电压差值大于第一预设阈值的情况下，控制陪试子模块为试品子模块正向模式充电；在陪试子模块与 试品子模块的电压差值小于第二预设阈值的情况下，控制陪试子模块为试品子模块逆向模式充电。
在一些实施例中，充电控制模块122还用于控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通，以通过陪试子模块的储能模块为试品子模块正向模式充电。
在一些实施例中，充电控制模块122还用于控制陪试子模块向电感充电；控制试品子模块进入充电模式，并控制陪试子模块的功率开关器件轮换导通，以通过电感存储的电能和陪试子模块的储能模块为试品子模块逆向模式充电。
在一些实施例中，充电控制模块122还用于向试品子模块输入任意占空比和频率的开关控制信号，以及向陪试子模块输入固定频率的开关控制信号，控制陪试子模块向试品子模块直流充电。
在一些实施例中，充电控制模块122还用于根据试品子模块的第一端的电流采样值以及预设参考电流，调整陪试子模块的开关控制信号的占空比。
请参阅图14，在一些实施例中，储能阀子模块测试装置还包括放电测试模块142。放电测试模块142用于控制试品子模块对陪试子模块放电；获取试品子模块在放电过程中的放电状态参数；根据放电状态参数，确定试品子模块的运行状态。
请结合参阅图15，在一些实施例中，储能阀子模块测试装置还包括状态分析模块152。状态分析模块152用于根据电压参数和电流参数，确定试品子模块充电过程中的电压应力状态和电流应力状态。
在一些实施例中，状态分析模块152还用于根据电流参数和温度参数，确定试品子模块的电流波动状态和温升状态。
上述方案，采用陪试子模块和试品子模块搭建对拖架构，利用陪试子模块向试品子模块充电，获取试品子模块在充电过程中的充电状态参数，从而分析得到试品子模块的运行状态。通过该方案，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，降低故障储能阀子模块投入储能系统的概率，提高储能阀子模块的运行可靠性。
上述储能阀子模块测试装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一个实施例中，提供了一种计算机设备，该计算机设备可以是终端，其内部结构图可以如图16所示。该计算机设备包括通过系统总线连接的处理器、存储器、通信接口、显示屏和输入装置。其中，该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统和计算机程序。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该计算机设备的通信接口用于与外部的终端进行有线或无线方式的通信，无线方式可通过WIFI、移动蜂窝网络、NFC(近场通信)或其他技术实现。该计算机程序被处理器执行时以实现一种储能阀子模块测试方法。该计算机设备的显示屏可以是液晶显示屏或者电子墨水显示屏，该计算机设备的输入装置可以是显示屏上覆盖的触摸层，也可以是计算机设备外壳上设置的按键、轨迹球或触控板，还可以是外接的键盘、触控板或鼠标等。
本领域技术人员可以理解，图16中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
在一个实施例中，提供了一种计算机设备，包括存储器和处理器，存储器中存储有计算机程序，该处理器执行计算机程序时实现以下步骤：
控制陪试子模块为试品子模块直流充电；获取试品子模块在充电过程中的充电状态参数；根据充电状态参数，确定试品子模块的运行状态。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现以下步骤：
控制陪试子模块为试品子模块直流充电；获取试品子模块在充电过程中的充电状态参数；根据充电状态参数，确定试品子模块的运行状态。
在一个实施例中，提供了一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现以下步骤：
控制陪试子模块为试品子模块直流充电；获取试品子模块在充电过程中的充电状态参数；根据充电状态参数，确定试品子模块的运行状态。
上述计算机设备、存储介质和计算机程序产品，采用陪试子模块和试品子模块搭建对拖架构，利用陪试子模块向试品子模块充电，获取试品子模块在充电过程中的充电状态参数，从而分析得到试品子模块的运行状态。通过该方案，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，降低故障储能阀子模块投入 储能系统的概率，提高储能阀子模块的运行可靠性。
请结合参阅图17，本申请还提供一种储能阀子模块测试系统，包括试品子模块202、陪试子模块204和处理器(图未示)，试品子模块202包括相连的第一功率模块601和第一储能模块602，陪试子模块204包括相连的第二功率模块603和第二储能模块604，第一功率模块601的高压端连接第二功率模块603的高压端，第一功率模块601的低压端连接第二功率模块603的低压端，第一功率模块601的控制端和第二功率模块603的控制端分别连接处理器(图未示)，处理器用于根据上述的储能阀子模块测试方法对试品子模块进行测试。
具体地，储能阀子模块测试系统所实现的具体测试方式如上述各个实施例所示，在此不再赘述。该方案，采用陪试子模块204和试品子模块202搭建对拖架构，利用陪试子模块204向试品子模块202充电，获取试品子模块202在充电过程中的充电状态参数，从而分析得到试品子模块202的运行状态。通过该方案，可模拟储能阀子模块的实际运行工况，在储能阀子模块投入使用之前，对储能阀子模块进行运行检测，降低故障储能阀子模块投入储能系统的概率，提高储能阀子模块的运行可靠性。
在一个实施例中，请结合参阅图18，储能阀子模块测试系统还包括电感L，第一功率模块601的高压端通过电感L连接第二功率模块603的高压端。
具体地，陪试子模块204和试品子模块202均包括功率模块部分和储能模块部分，通过功率模块部分的功率变换，实现储能模块的充放电控制。第一功率模块601的第一端和第二功率模块603的第一端通过电感L连接，第一功率模块601的第二端连接第二功率模块603的第二端，从而搭建形成对拖架构。
在一个实施例中，处理器具备电流采样功能，故可将第一功率模块601的高压端连接处理器和电感L，通过处理器采集试品子模块202在充电过程中的负载电流，也即得到电流采样值，在这之后以电流采样值调节陪试子模块204的开关控制信号的占空比。
可以理解，在另外的实施例中，电流采样值还可以通过额外的电流采集器实现，此时第一功率模块601的高压端只需与电感L连接即可，电流采样值由处理器与电流采集器有线或者无线通信的方式获取。
上述方案，在第一功率模块和第二功率模块高压端之间设置有电感，该种结构下的测试方式可参阅上述储能阀子模块测试方法描述，在此不再赘述。通过该方案，可使得陪试子模块的电压较低时，仍能通过电感储能，实现对试品子模块的充电，提高陪试子模块对试品子模块进行充电的充电可靠性。
请参阅图19，在一些实施例中，储能阀子模块测试系统还包括补能电路162，补能电路162连接第二储能模块604(图未示)。
具体地，为尽可能模拟试品子模块202的各种工况，需要陪试子模块204为试品子模块202进行较长时间的充电，然而，陪试子模块204的储能模块存储的电能可能出现过低的情况，无法满足长时间充电需求。故本实施例的方案，需要在陪试子模块204有补电需求的情况下，控制陪试子模块204补电，以实现长时运行试验。该方案，通过在陪试子模块204处设置补能电路162，能够在测试过程中根据实际需求，实时开启或结束陪试子模块204的充电，提高陪试子模块204的充电运行时长。
上述方案，在储能阀子模块测试系统中还设置有补能电路162，通过补能电路162为陪试子模块204补电，可有效提高陪试子模块204的续航时间，使得储能阀子模块可进行长时间的运行测试。
请继续参阅图19，在一些实施例中，补能电路162包括开关器件D1和电流源LS，电流源LS经过开关器件D1连接陪试子模块204的第二储能模块604(图未示)。
具体地，电流源LS即为能够提供恒定电流为陪试子模块204补电的电源装置，具体而言，本申请实施例所提供的电流源LS为直流电流源。同时，补能电路162中还设置有开关器件D1，能够防止陪试子模块204的电流反灌电流源LS，提高电流源LS的运行安全性。应当指出的是，开关器件D1的具体类型并不是唯一的，只要是防止陪试子模块204的电流反灌电流源LS的器件均可，例如，在一个较为详细的实施例中，开关器件D1包括二极管，此时将二极管的阳极连接电流源LS，二极管的阴极连接第二储能模块604。
上述方案，补能电路162具体包括串联的开关器件D1和电流源LS，结构简单，可有效节约储能阀子模块测试系统的体积以及电路成本。
在一些实施例中，第一功率模块601包括并联的第一功率单元和第一电容，第一功率单元的高压端连接第二功率模块603的高压端，第一功率单元的低压端连接第二功率模块603的低压端。
和/或，在一些实施例中第二功率模块603包括并联的第二功率单元和第二电容，第二功率单元的高压端连接第一功率模块601的高压端，第二功率单元的低压端连接第一功率模块601的低压端。
上述方案，第一功率模块601和第二功率模块603均包括功率单元和电容，通过该种测试架构搭建，可实现功率模块包括功率单元和电容这一类型的储能阀子模块的测试，从而 提高该类型储能阀子模块的运行可靠性。
进一步地，在一些实施例中，第一功率模块601包括全桥功率模块或半桥功率模块，第二功率模块603包括全桥功率模块或半桥功率模块。
请结合参阅图6，以第一功率模块601和第二功率模块603的结构一致，且包括半桥结构为例，第一功率模块601包括第一功率开关器件T1、第二功率开关器件T2和第一电容C1，第一功率开关器件T1和第二功率开关器件T2的公共端作为高压端，对应的，第一功率开关器件T1的输入端连接第二功率开关器件T2的输入端、处理器(图未示)和电感L的第一端，第一功率开关器件T1的输出端连接第一电容C1第一端和第一储能模块602的第一端，第二功率开关器件T2的输出端作为低压端，连接第二功率模块603，第二功率开关器件T2的输出端还连接第一电容C1的第二端和第一储能模块602的第二端，第一功率开关器件T1的控制端和第二功率开关器件T2的控制端分别连接处理器(图未示)。
具体地，本实施例的方案，将第一功率开关器件T1和第二功率开关器件T2的公共连接端作为第一功率模块601的高压端，将第二功率开关器件T2的输出端作为第一功率模块601的低压端，以此接入第一储能模块602、电感L和陪试子模块204，陪试子模块204的结构则与试品子模块202的结构一致，并镜像对称，搭建形成对拖架构。
上述方案，试品子模块202和陪试子模块204均为半桥结构，可实现半桥结构下储能阀子模块的对拖测试，提高半桥结构储能阀子模块的运行可靠性。
请结合参阅图20，在一些实施例中，以第一功率模块601和第二功率模块603的结构一致，且包括全桥结构为例，第一功率模块601包括第三功率开关器件T3、第四功率开关器件T4、第五功率开关器件T5、第六功率开关器件T6和第二电容C2，第三功率开关器件T3的输入端连接第四功率开关器件T4的输入端、处理器(图未示)和电感L的第一端，第三功率开关器件T3的输出端连接第二电容C2的第一端和第一储能模块602的第一端，第一储能模块602的第一端还连接第五功率开关器件T5的输入端，第五功率开关器件T5的输出端连接第六功率开关器件T6的输入端和第二功率模块603，第六功率开关器件T6的输出端连接第一储能模块602的第二端，第四功率开关器件T4的输出端连接第二电容C2的第二端和第一储能模块602的第二端，第三功率开关器件T3的控制端、第四功率开关器件T4的控制端、第五功率开关器件T5的控制端和第六功率开关器件T6的控制端分别连接处理器(图未示)。
具体地，本实施例的方案，将第三功率开关器件T3和第四功率开关器件T4的公共 连接端作为第一功率模块601的高压端，将第五功率开关器件T5和第六功率开关器件T6的公共连接端作为第一功率模块601的低压端，将各个功率开关器件的控制端作为第一功率模块601的控制端。以此接入第一储能模块602、电感L和陪试子模块204，陪试子模块204的结构则与试品子模块202的结构一致，并镜像对称，搭建形成对拖架构。
上述方案，试品子模块202和陪试子模块204均为全桥结构，可实现全桥结构下储能阀子模块的对拖测试，提高全桥结构储能阀子模块的运行可靠性。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (20)

  1. 一种储能阀子模块测试方法，包括：
    控制陪试子模块为试品子模块直流充电，其中，所述试品子模块包括相连的第一功率模块和第一储能模块，所述陪试子模块包括相连的第二功率模块和第二储能模块，所述第一功率模块的高压端连接所述第二功率模块的高压端，所述第一功率模块的低压端连接所述第二功率模块的低压端；
    获取所述试品子模块在充电过程中的充电状态参数；及
    根据所述充电状态参数，确定所述试品子模块的运行状态。
  2. 根据权利要求1所述的储能阀子模块测试方法，其中，所述控制陪试子模块为试品子模块直流充电，包括：
    在陪试子模块与试品子模块的电压差值大于第一预设阈值的情况下，控制陪试子模块为试品子模块正向模式充电；
    在陪试子模块与试品子模块的电压差值小于第二预设阈值的情况下，控制陪试子模块为试品子模块逆向模式充电；其中，所述第一预设阈值大于或等于所述第二预设阈值。
  3. 根据权利要求2所述的储能阀子模块测试方法，其中，所述控制陪试子模块为试品子模块正向模式充电，包括：
    控制所述试品子模块进入充电模式，并控制所述陪试子模块的功率开关器件轮换导通，以通过所述第二储能模块为所述试品子模块正向模式充电。
  4. 根据权利要求2或3所述的储能阀子模块测试方法，其中，所述第一功率模块的高压端通过电感连接所述第二功率模块的高压端，所述控制陪试子模块为试品子模块逆向模式充电，包括：
    控制所述陪试子模块向所述电感充电；
    控制所述试品子模块进入充电模式，并控制所述陪试子模块的功率开关器件轮换导通，以通过所述电感存储的电能和所述第二储能模块为所述试品子模块逆向模式充电。
  5. 根据权利要求1-4任意一项所述的储能阀子模块测试方法，其中，所述控制陪试子模块为试品子模块直流充电，包括：
    向所述试品子模块输入任意占空比和频率的开关控制信号，以及向所述陪试 子模块输入固定频率的开关控制信号，控制所述陪试子模块向所述试品子模块直流充电。
  6. 根据权利要求5所述的储能阀子模块测试方法，其中，还包括：
    根据所述试品子模块的第一端的电流采样值以及预设参考电流，调整所述陪试子模块的开关控制信号的占空比。
  7. 根据权利要求1-6任意一项所述的储能阀子模块测试方法，其中，所述充电状态参数包括电流参数、电压参数、温度参数中的至少一种。
  8. 根据权利要求7所述的储能阀子模块测试方法，其中，所述根据所述充电状态参数，确定所述试品子模块的运行状态，包括：
    根据所述电压参数和电流参数，确定所述试品子模块充电过程中的电压应力状态和电流应力状态；
    和/或，根据所述电流参数和所述温度参数，确定所述试品子模块的电流波动状态和温升状态。
  9. 根据权利要求1-8任意一项所述的储能阀子模块测试方法，其中，还包括：
    在陪试子模块有补电需求的情况下，控制所述陪试子模块进行补电。
  10. 根据权利要求1-9任意一项所述的储能阀子模块测试方法，其中，还包括：
    控制所述试品子模块对所述陪试子模块放电；
    获取所述试品子模块在放电过程中的放电状态参数；
    根据所述放电状态参数，确定所述试品子模块的运行状态。
  11. 一种储能阀子模块测试装置，包括：
    充电控制模块，用于控制陪试子模块为试品子模块直流充电，其中，所述试品子模块包括相连的第一功率模块和第一储能模块，所述陪试子模块包括相连的第二功率模块和第二储能模块，所述第一功率模块的高压端连接所述第二功率模块的高压端，所述第一功率模块的低压端连接所述第二功率模块的低压端；及
    参数获取模块，用于获取所述试品子模块在充电过程中的充电状态参数；所述充电状态参数用于确定所述试品子模块的运行状态。
  12. 一种计算机设备，包括存储器和处理器，所述存储器存储有计算机程序， 所述处理器执行所述计算机程序时实现权利要求1至10中任一项所述储能阀子模块测试方法的步骤。
  13. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至10中任一项所述储能阀子模块测试方法的步骤。
  14. 一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时实现权利要求1至10中任一项所述储能阀子模块测试方法的步骤。
  15. 一种储能阀子模块测试系统，包括试品子模块、陪试子模块和处理器，所述试品子模块包括相连的第一功率模块和第一储能模块，所述陪试子模块包括相连的第二功率模块和第二储能模块，所述第一功率模块的高压端连接所述第二功率模块的高压端，所述第一功率模块的低压端连接所述第二功率模块的低压端，所述第一功率模块的控制端和所述第二功率模块的控制端分别连接所述处理器，所述处理器用于根据权利要求1-10任意一项所述的储能阀子模块测试方法对所述试品子模块进行测试。
  16. 根据权利要求15所述的储能阀子模块测试系统，其中，还包括电感，所述第一功率模块的高压端通过电感连接所述第二功率模块的高压端。
  17. 根据权利要求15或16所述的储能阀子模块测试系统，其中，还包括补能电路，所述补能电路连接所述第二储能模块。
  18. 根据权利要求17所述的储能阀子模块测试系统，其中，所述补能电路包括开关器件和电流源，所述电流源通过开关器件连接所述第二储能模块。
  19. 根据权利要求15-18任意一项所述的储能阀子模块测试系统，其中，所述第一功率模块包括并联的第一功率单元和第一电容，所述第一功率单元的高压端连接所述第二功率模块的高压端，所述第一功率单元的低压端连接所述第二功率模块的低压端；
    和/或，所述第二功率模块包括并联的第二功率单元和第二电容，所述第二功率单元的高压端连接所述第一功率模块的高压端，所述第二功率单元的低压端连接所述第一功率模块的低压端。
  20. 根据权利要求19所述的储能阀子模块测试系统，其中，所述第一功率模块包括全桥功率模块或半桥功率模块，所述第二功率模块包括全桥功率模块或半桥功率模块。
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