Redundant energy storage integration test system and test method

Abstract

The invention relates to a redundant energy storage integrated test system and method. The test system is characterized in that a first battery system is connected with a first bidirectional PCS (Power Conversion System) through a communication and charging and discharging circuit; the second battery system is connected with the second bidirectional PCS through a communication and charge-discharge circuit; the first bidirectional PCS and the second bidirectional PCS are connected through a loop switch; the first bidirectional PCS and the second bidirectional PCS are respectively connected with an external power grid and a load through a main loop and a pre-charging loop; the electronic control unit controls the charging and discharging states, power and voltage of the first battery system and the second battery system by sending control signals to the first bidirectional PCS and the second bidirectional PCS and sending turn-off signals to the loop switch, the first control branch and the second control branch. The electrochemical energy storage system can be subjected to full-functional protection, and various abnormities in the system capacity and the energy storage system operation process can be detected, so that normal operation of an energy storage power station is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of energy storage system testing, and in particular to a redundant energy storage integrated testing system and a testing method. Background Art

[0002] As the scale of battery packs is getting bigger and bigger, more and more power stations are using large-scale energy storage. At the same time, due to the relatively expensive and non-abuse characteristics of lithium-ion batteries and the inherent insecurity of lithium-ion batteries, an efficient integrated test system and a professional charging management system are needed to test and manage the entire integrated system to ensure the best performance of the battery pack. Various energy storage integrated systems on the market often suddenly have SOC protection alarms, BMS abnormal alarms, battery abnormal alarms, communication abnormalities, insufficient capacity and other problems during use, causing many users of large energy storage power stations to feel very distressed.

[0003] Currently, the technical requirements for large-scale energy storage testing are stringent. There is no independent intelligent testing system, and most of them use manual control solutions. The test data is incomplete and cannot provide reliability verification. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a redundant energy storage integrated test system, which can provide full functional protection for the electrochemical energy storage system and detect various abnormalities in the system capacity and the operation process of the energy storage system, ensuring that the energy storage integrated system will not have various abnormal alarms during use, so as to facilitate the normal operation of the energy storage power station.

[0005] According to a first aspect of the present invention, a redundant energy storage integrated test system is provided, comprising: a first battery system, a second battery system, a first bidirectional PCS, a second bidirectional PCS, a loop switch and an energy storage intelligent control system; the energy storage intelligent control system comprises: an electronic control unit, a main loop and a pre-charging loop; The first battery system is connected to the first bidirectional PCS via a communication and charge-discharge line; the second battery system is connected to the second bidirectional PCS via a communication and charge-discharge line; The first bidirectional PCS and the second bidirectional PCS are connected via a loop switch; the first bidirectional PCS and the second bidirectional PCS are connected to an external power grid and a load via a main loop and a pre-charging loop respectively; The electronic control unit controls the charge and discharge state, power and voltage of the first battery system and the second battery system by sending control signals to the first bidirectional PCS and the second bidirectional PCS and sending shutdown signals to the loop switch, the first control branch and the second control branch.

[0006] Based on the above technical solution, the present invention can also make the following improvements.

[0007] Optionally, the main circuit includes: a total positive relay; the pre-charging circuit includes: a pre-charging relay and a pre-charging resistor; the pre-charging relay is connected in series with the pre-charging resistor and then connected in parallel with the total positive relay; After the first bidirectional PCS is connected to the power grid, it is then connected to the load through the main positive relay; After the second bidirectional PCS is connected to the power grid, it is connected to the load through the pre-charging relay and the pre-charging resistor.

[0008] Optionally, the electronic control unit performs functional tests on the first battery system and the second battery system by controlling the charging and discharging state, power and voltage of the first battery system and the second battery system, and the test contents include: pulse to battery test, power replenishment test and capacity test.

[0009] Optionally, before performing the functional test, the first battery system and / or the second battery system is initially inspected, and the initial inspection process includes: The first battery system and / or the second battery system are powered on, and the first battery system and / or the second battery system self-check and determine whether there is a fault, and the first bidirectional PCS and / or the second bidirectional PCS are started after no fault is found; After the first bidirectional PCS and / or the second bidirectional PCS self-check and confirm that there is no fault, the first battery system and the first bidirectional PCS and / or the second battery system and the second bidirectional PCS respectively exchange information and confirm the handshake status. After the handshake is successful, the first bidirectional PCS and / or the second bidirectional PCS respectively report the voltage and power to the electronic control unit.

[0010] Optionally, the process of performing a pulse to support test includes: After an initial inspection of the first battery system and the second battery system, the electronic control unit adjusts the input and output power voltages of the first bidirectional PCS and the second bidirectional PCS to keep the charging and discharging power of the first battery system and the second battery system consistent, controls the voltage at a set value, and performs a pulse-to-support test.

[0011] Optionally, the process of performing a power replenishment test on the first battery system or the second battery system includes: After an initial inspection of the first battery system or the second battery system, the electronic control unit adjusts the input power of the first bidirectional PCS or the second bidirectional PCS, and controls the charging power of the first bidirectional PCS to the first battery system or the second bidirectional PCS to the second battery system until the power of the first battery system or the second battery system is charged to the required value.

[0012] Optionally, the process of performing a capacity test on the first battery system or the second battery system includes: After the first battery system or the second battery system is initially inspected, the electronic control unit adjusts the input power of the first bidirectional PCS or the second bidirectional PCS, and controls the charging power of the first bidirectional PCS to the first battery system or the second bidirectional PCS to the second battery system, until the first battery system or the second battery system is fully charged and stops charging; The electronic control unit starts the grid voltage disconnection mode, the load uploads the load condition to the first bidirectional PCS or the second bidirectional PCS, the first bidirectional PCS or the second bidirectional PCS reports the load status to the electronic control unit, and the electronic control unit discharges the first battery system or the second bidirectional PCS based on whether the load is capacitive or inductive, and records the battery capacity of the first battery system or the second battery system when the capacity of the first battery system or the second bidirectional PCS is fully discharged.

[0013] According to a second aspect of the present invention, a redundant energy storage integrated test method is provided, wherein the redundant energy storage system comprises: a first battery system, a second battery system, a first bidirectional PCS and a second bidirectional PCS; the first battery system is connected to the first bidirectional PCS via a communication and charge-discharge line; the second battery system is connected to the second bidirectional PCS via a communication and charge-discharge line; the test method comprises: The charging and discharging state, power and voltage of the first battery system and the second battery system are controlled by controlling the closing of the connection lines between the first bidirectional PCS and the second bidirectional PCS, the first bidirectional PCS and the external load, and the second bidirectional PCS and the external load, and by sending control signals to the first bidirectional PCS and the second bidirectional PCS.

[0014] The present invention provides a redundant energy storage integrated test system and method, 1. Reliability improvement: The redundant energy storage integrated test system can improve the reliability of the system. Through the design and integration of multiple energy storage devices, even if some energy storage devices fail, the system can still continue to work, thereby reducing the risk of the system caused by single point failure. 2. Performance optimization: The system can intelligently manage and optimize the configuration of multiple energy storage devices according to demand to achieve higher performance. By dynamically adjusting the use status of each energy storage unit, the system can use energy more efficiently and reduce energy waste while meeting demand. 3. Energy saving and environmental protection: The system helps to improve energy utilization efficiency and reduce energy waste. By optimizing the energy storage and release process, the system can reduce dependence on traditional energy, thereby reducing the impact on the environment and promoting the development and utilization of green energy. 4. Cost-effectiveness: Although the redundant energy storage integrated test system may increase the initial investment, in the long run, by improving the reliability and performance of the system, reducing energy consumption and maintenance costs, it can bring greater economic benefits and cost savings. 5. Intelligent management: This system usually combines intelligent control and monitoring technology to achieve real-time monitoring, fault diagnosis and remote management of energy storage devices. Through intelligent management, the system's response speed and management efficiency can be improved, ensuring that the system can operate stably under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural block diagram of a redundant energy storage system; Figure 2 A structural block diagram of a redundant energy storage integrated test system provided by an embodiment of the present invention; DETAILED DESCRIPTION The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0016] like Figure 1 In the redundant energy storage system shown, when container battery system 1 is fully charged and container battery system 2 is empty, container battery system 1 will discharge and container battery system 2 will be charged. Since the charging and discharging efficiency cannot be completely matched under normal circumstances, it is often necessary to stop the energy storage system and replace the container battery system to replenish the power, which is very inconvenient.

[0017] Figure 2 A structural diagram of a redundant energy storage integrated test system provided by an embodiment of the present invention, such as Figure 2 As shown, the test system includes: a first battery system, a second battery system, a first bidirectional PCS, a second bidirectional PCS, a loop switch and an energy storage intelligent control system; the energy storage intelligent control system includes: an electronic control unit, a main loop and a pre-charging loop.

[0018] The first battery system is connected to the first bidirectional PCS via a communication and charge-discharge line; the second battery system is connected to the second bidirectional PCS via a communication and charge-discharge line.

[0019] The first bidirectional PCS and the second bidirectional PCS are connected via a loop switch; the first bidirectional PCS and the second bidirectional PCS are connected to an external power grid and a load via a main loop and a pre-charging loop, respectively; in a specific implementation, the loop switch may be a high-voltage loop switch.

[0020] The electronic control unit controls the charge and discharge state, power and voltage of the first battery system and the second battery system by sending control signals to the first bidirectional PCS and the second bidirectional PCS and sending shutdown signals to the loop switch, the first control branch and the second control branch.

[0021] In specific implementation, Figure 2 As shown, the battery system may be a container battery system, the load may be a factory load, and the power grid may be a 400VAC power grid.

[0022] The main circuit between the first / second battery system and the first / second bidirectional PCS is connected by a cable to charge and discharge the battery system, and the communication line adopts CAN communication.

[0023] The first bidirectional PCS and the second bidirectional PCS are connected by cables, and a high-voltage circuit switch is used in the middle for connection. The communication connection is also performed by RS485. The electronic control unit is connected to the first bidirectional PCS and the second bidirectional PCS respectively through Ethernet.

[0024] The load is also connected to the first bidirectional PCS and the second bidirectional PCS for communication respectively, and the communication method may be RS485 communication.

[0025] The present invention provides a redundant energy storage integrated test system. An electronic control unit, a communication scheme, and a high-voltage control circuit are added to the energy storage test system. The test equipment is turned on to connect the energy storage container system, and the charging or discharging mode is started. The electronic control unit, the communication scheme, and the high-voltage control circuit are automatically started. According to the power status of the energy storage container system, the system will give priority to starting the container test. When one of the container systems is not fully discharged and the other is fully charged, the system will automatically switch to the discharge mode. The container system starts the mode of discharging the factory load until the power is completely consumed, and then the discharge circuit is turned off to enter the waiting charging mode. The process can be tested back and forth, so as to better detect the performance of the energy storage integrated system.

[0026] There is no need to worry about the remaining capacity or the amount of power needed to be replenished. If there is remaining capacity and needs to be discharged, it can be discharged through the factory load. If power needs to be replenished, it can be charged directly through the grid to achieve intelligent testing.

[0027] Example 1 Embodiment 1 provided by the present invention is an embodiment of a redundant energy storage integrated test system provided by the present invention, combined with Figure 2 It can be seen that an embodiment of the test system includes: a first battery system, a second battery system, a first bidirectional PCS, a second bidirectional PCS, a loop switch and an energy storage intelligent control system; the energy storage intelligent control system includes: an electronic control unit, a main loop and a pre-charging loop.

[0028] The first battery system is connected to the first bidirectional PCS via a communication and charge-discharge line; the second battery system is connected to the second bidirectional PCS via a communication and charge-discharge line.

[0029] The first bidirectional PCS and the second bidirectional PCS are connected via a loop switch; the first bidirectional PCS and the second bidirectional PCS are connected to an external power grid and a load via a main loop and a pre-charging loop, respectively.

[0030] In one possible implementation mode, the main circuit includes: a total positive relay; the pre-charging circuit includes: a pre-charging relay and a pre-charging resistor; the pre-charging relay is connected in series with the pre-charging resistor and then connected in parallel with the total positive relay; thereby protecting the entire normal operation.

[0031] After the first bidirectional PCS is connected to the grid, it is then connected to the load through the main positive relay.

[0032] After the second bidirectional PCS is connected to the grid, it is connected to the load through the pre-charging relay and the pre-charging resistor.

[0033] In the specific implementation, the pre-charge relay is connected in series with the pre-charge resistor and then in parallel with the main positive relay, and then connected to the load through the system fuse. The electronic control unit controls the main positive relay, pre-charge relay, pre-charge resistor, system fuse and high-voltage circuit switch respectively by driving analog signals.

[0034] The electronic control unit controls the charge and discharge state, power and voltage of the first battery system and the second battery system by sending control signals to the first bidirectional PCS and the second bidirectional PCS, and sending shutdown signals to the loop switch, the first control branch and the second control branch.

[0035] In a possible implementation manner, the electronic control unit performs functional tests on the first battery system and the second battery system by controlling the charge and discharge state, power and voltage of the first battery system and the second battery system, and the test contents include: pulse to battery test, power replenishment test and capacity test.

[0036] In a possible embodiment, before the functional test is performed, the first battery system and / or the second battery system is initially inspected, and the initial inspection process includes: The first battery system and / or the second battery system are powered on, and the first battery system and / or the second battery system are self-checked to determine whether there is a fault, and if there is a fault, they are taken offline for inspection. After no fault is found, the first bidirectional PCS and / or the second bidirectional PCS are started.

[0037] After the first bidirectional PCS and / or the second bidirectional PCS self-check and confirm that there is no fault, the first battery system and the first bidirectional PCS and / or the second battery system and the second bidirectional PCS respectively exchange information and confirm the handshake status. After the handshake is successful, the first bidirectional PCS and / or the second bidirectional PCS respectively report the voltage and power to the electronic control unit.

[0038] In a possible embodiment, the process of performing the pulse-to-support test includes: After the initial inspection of the first battery system and the second battery system, the electronic control unit adjusts the input and output power voltages of the first bidirectional PCS and the second bidirectional PCS to keep the charging and discharging power of the first battery system and the second battery system consistent, controls the voltage at a set value, and performs a pulse pair test.

[0039] The specific contents of the pulse-to-support test include: connecting the test harness according to the design requirements, and reading the container system voltage, temperature, whether it has charging and discharging functions and various parameter information; importing the DBC file into the electronic control unit to read the parameters of the entire support test system; writing the pulse test process according to the on-site operating conditions; controlling the power of two PCS energy storage bidirectional inverters through the electronic control unit; starting the system pulse test, in which the container battery system 1 and system 2 are charged and discharged back and forth; and recording the voltage, pressure difference, current, temperature, temperature rise and other data of each system to determine whether the system is normal and eliminate the abnormality in the factory.

[0040] In a possible embodiment, the process of performing a power replenishment test on the first battery system or the second battery system includes: After an initial inspection of the first battery system or the second battery system, the electronic control unit adjusts the input power of the first bidirectional PCS or the second bidirectional PCS, and controls the charging power of the first bidirectional PCS to the first battery system or the second bidirectional PCS to the second battery system until the power of the first battery system or the second battery system is charged to the required value.

[0041] In a possible embodiment, the process of performing a capacity test on the first battery system or the second battery system includes: After an initial inspection of the first battery system or the second battery system, the electronic control unit adjusts the input power of the first bidirectional PCS or the second bidirectional PCS, controls the charging power of the first bidirectional PCS to the first battery system or the second bidirectional PCS to the second battery system, and stops charging after the first battery system or the second battery system is fully charged.

[0042] The electronic control unit starts the grid voltage disconnection mode, the load uploads the load condition to the first bidirectional PCS or the second bidirectional PCS, the first bidirectional PCS or the second bidirectional PCS reports the load status to the electronic control unit, the electronic control unit discharges the first battery system or the second bidirectional PCS based on whether the load is capacitive or inductive, and records the battery capacity of the first battery system or the second battery system when the capacity of the first battery system or the second bidirectional PCS is fully discharged.

[0043] In a possible embodiment, before the electronic control unit performs a pulse-to-tray test on the container battery system, it is necessary to adjust the charging and discharging power and voltage of the container battery system 1 and the container battery system 2, and the adjustment steps are as follows: Power on the container battery system 1 and the container battery system 2, start self-checking and determine whether there is a fault; if the container battery system 1 or the container battery system 2 is faulty, go offline for inspection.

[0044] After the container battery system 1 and the container battery system 2 have self-checked and found no faults, start the PCS energy storage bidirectional converter 1 and the PCS energy storage bidirectional converter 2, and synchronize the PCS to start self-checking and confirm whether there are any faults; if the PCS energy storage bidirectional converter 1 and the PCS energy storage bidirectional converter 2 have faults, troubleshoot them.

[0045] After the PCS energy storage bidirectional converter 1 and the PCS energy storage bidirectional converter 2 have no faults after self-check, they exchange information with the container battery system 1 and the container battery system 2 through CAN communication and confirm the handshake status.

[0046] After the handshake is successful, PCS energy storage bidirectional converter 1 and PCS energy storage bidirectional converter 2 report the voltage and power information to the electronic control unit via Ethernet respectively.

[0047] The electronic control unit independently builds a data model and uses an intelligent algorithm to adjust the input voltage, output voltage, input power and output power of PCS energy storage bidirectional converter 1 and PCS energy storage bidirectional converter 2 respectively, so that the charging and discharging power of container battery system 1 and container battery system 2 remain consistent and the voltage is controlled at a reasonable value, thereby performing normal pulse-to-support testing on container battery system 1 and container battery system 2.

[0048] In a possible embodiment, for different projects, there are certain requirements for the shipping power. Whether it is during storage or charging and discharging, there will be power loss. At this time, it is necessary to recharge it until the power shipping requirements are met. The process of the electronic control unit performing a system recharge test on the container battery system 1 is specifically as follows: Channel 1 is used to test the system capacity. First, the container battery system 1 is powered on. The container battery system 1 starts self-checking and determines whether there is a fault. If the container battery system 1 is faulty, it is taken offline for inspection.

[0049] After the container battery system 1 is fault-free, start the PCS energy storage bidirectional converter 1, and synchronize the PCS to start self-checking to confirm whether there is any fault. If the PCS energy storage bidirectional converter 1 is faulty, troubleshoot it.

[0050] After the PCS energy storage bidirectional converter 1 is fault-free, it exchanges information with the container battery system 1 through CAN communication and confirms the handshake status.

[0051] After the handshake is successful, the PCS energy storage bidirectional converter 1 reports the voltage and power information to the electronic control unit via Ethernet. The electronic control unit adjusts the input power of the PCS energy storage bidirectional converter 1 through an intelligent control strategy, and controls the charging power of the PCS energy storage bidirectional converter 1 to the container battery system 1 until the container battery system 1 is charged to a satisfactory value.

[0052] In a possible embodiment, the process of the electronic control unit performing a system capacity test on the container battery system 1 is specifically as follows: Channel 1 is used to test the system capacity. First, the container battery system 1 is powered on. The container battery system 1 starts self-checking and determines whether there is a fault. If the container battery system 1 is faulty, it is taken offline for inspection.

[0053] After the container battery system 1 is fault-free, start the PCS energy storage bidirectional converter 1, and synchronize the PCS to start self-checking to confirm whether there is any fault. If the PCS energy storage bidirectional converter 1 is faulty, troubleshoot it.

[0054] After the PCS energy storage bidirectional converter 1 is fault-free, it exchanges information with the container battery system 1 through CAN communication and confirms the handshake status.

[0055] After the handshake is successful, the PCS energy storage bidirectional converter 1 reports the voltage and power information to the electronic control unit via Ethernet. The electronic control unit adjusts the input power of the PCS energy storage bidirectional converter 1 through an intelligent control strategy, and controls the charging power of the PCS energy storage bidirectional converter 1 to the container battery system 1 until the container battery system 1 is fully charged.

[0056] After the container battery system 1 stops charging, the electronic control unit starts the grid voltage disconnection mode, and the factory load uploads the load status to the PCS energy storage bidirectional converter 1 through RS485 communication, and the PCS energy storage bidirectional converter 1 then reports the load status to the electronic control unit through Ethernet.

[0057] The electronic control unit determines whether the load is capacitive or inductive and formulates different control strategies.

[0058] Use the control strategy to discharge the battery system of container 1 until the capacity of the battery system is fully discharged and an alarm is issued to shut down, and record the capacity of the container battery system.

[0059] The redundant energy storage integrated test system provided by the embodiment of the present invention will bring many advantages and beneficial effects such as higher reliability, performance optimization, energy saving and environmental protection, cost-effectiveness and intelligent management, and is expected to bring significant innovation and progress in the field of energy storage.

[0060] Example 2 Embodiment 2 provided by the present invention is an embodiment of a redundant energy storage integrated test method provided by the present invention, combined with Figure 1 It can be seen that the redundant energy storage system includes: a first battery system, a second battery system, a first bidirectional PCS and a second bidirectional PCS; the first battery system and the first bidirectional PCS are connected through a communication and charging and discharging line; the second battery system and the second bidirectional PCS are connected through a communication and charging and discharging line. A test method provided by an embodiment of the present invention includes: The charging and discharging state, power and voltage of the first battery system and the second battery system are controlled by controlling the closing of the connection lines between the first bidirectional PCS and the second bidirectional PCS, the first bidirectional PCS and the external load, and the second bidirectional PCS and the external load, and by sending control signals to the first bidirectional PCS and the second bidirectional PCS.

[0061] It can be understood that the redundant energy storage integrated testing method provided by the present invention corresponds to the redundant energy storage integrated testing system provided by the aforementioned embodiments. The relevant technical features of the redundant energy storage integrated testing method can refer to the relevant technical features of the redundant energy storage integrated testing system, which will not be repeated here.

[0062] A redundant energy storage integrated test system and method provided by the embodiment of the present invention has the following beneficial effects: 1. Improved reliability: The redundant energy storage integrated test system can improve the reliability of the system. Through the design and integration of multiple energy storage devices, even if some energy storage devices fail, the system can still continue to work, thereby reducing the risk of the system caused by single point failure. 2. Performance optimization: The system can intelligently manage and optimize the configuration of multiple energy storage devices according to demand to achieve higher performance. By dynamically adjusting the use status of each energy storage unit, the system can use energy more efficiently and reduce energy waste while meeting demand. 3. Energy saving and environmental protection: The system helps to improve energy utilization efficiency and reduce energy waste. By optimizing the energy storage and release process, the system can reduce dependence on traditional energy, thereby reducing the impact on the environment and promoting the development and utilization of green energy. 4. Cost-effectiveness: Although the redundant energy storage integrated test system may increase the initial investment, in the long run, by improving the reliability and performance of the system, reducing energy consumption and maintenance costs, it can bring greater economic benefits and cost savings. 5. Intelligent management: This system usually combines intelligent control and monitoring technology to achieve real-time monitoring, fault diagnosis and remote management of energy storage devices. Through intelligent management, the system's response speed and management efficiency can be improved, ensuring that the system can operate stably under various working conditions.

[0063] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0064] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0065] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0066] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0067] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0068] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0069] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A redundant energy storage integrated test system, characterized in that: The test system includes: a first battery system, a second battery system, a first bidirectional PCS, a second bidirectional PCS, a loop switch and an energy storage intelligent control system; the energy storage intelligent control system includes: an electronic control unit, a main loop and a pre-charging loop; The first battery system is connected to the first bidirectional PCS via a communication and charge-discharge line; the second battery system is connected to the second bidirectional PCS via a communication and charge-discharge line; The first bidirectional PCS and the second bidirectional PCS are connected via a loop switch; the first bidirectional PCS and the second bidirectional PCS are connected to an external power grid and a load via a main loop and a pre-charging loop respectively; The electronic control unit controls the charge and discharge state, power and voltage of the first battery system and the second battery system by sending control signals to the first bidirectional PCS and the second bidirectional PCS and sending shutdown signals to the loop switch, the first control branch and the second control branch.

2. The integrated test system according to claim 1, characterized in that: The main circuit includes: a total positive relay; the pre-charging circuit includes: a pre-charging relay and a pre-charging resistor; the pre-charging relay is connected in series with the pre-charging resistor and then connected in parallel with the total positive relay; After the first bidirectional PCS is connected to the power grid, it is then connected to the load through the main positive relay; After the second bidirectional PCS is connected to the power grid, it is connected to the load through the pre-charging relay and the pre-charging resistor.

3. The integrated test system according to claim 1, characterized in that: The electronic control unit performs functional tests on the first battery system and the second battery system by controlling the charge and discharge state, power and voltage of the first battery system and the second battery system. The test contents include: pulse to battery test, power replenishment test and capacity test.

4. The integrated test system according to claim 3, characterized in that: Before performing the functional test, the first battery system and / or the second battery system is initially inspected, and the initial inspection process includes: The first battery system and / or the second battery system are powered on, and the first battery system and / or the second battery system self-check and determine whether there is a fault, and the first bidirectional PCS and / or the second bidirectional PCS are started after no fault is found; After the first bidirectional PCS and / or the second bidirectional PCS self-check and confirm that there is no fault, the first battery system and the first bidirectional PCS and / or the second battery system and the second bidirectional PCS respectively exchange information and confirm the handshake status. After the handshake is successful, the first bidirectional PCS and / or the second bidirectional PCS respectively report the voltage and power to the electronic control unit.

5. The integrated test system according to claim 3, characterized in that: The process of performing a pulse to support test includes: After an initial inspection of the first battery system and the second battery system, the electronic control unit adjusts the input and output power voltages of the first bidirectional PCS and the second bidirectional PCS to keep the charging and discharging power of the first battery system and the second battery system consistent, controls the voltage at a set value, and performs a pulse-to-support test.

6. The integrated test system according to claim 3, characterized in that: The process of performing a power replenishment test on the first battery system or the second battery system includes: After an initial inspection of the first battery system or the second battery system, the electronic control unit adjusts the input power of the first bidirectional PCS or the second bidirectional PCS, and controls the charging power of the first bidirectional PCS to the first battery system or the second bidirectional PCS to the second battery system until the power of the first battery system or the second battery system is charged to the required value.

7. The integrated test system according to claim 3, characterized in that: The process of performing a capacity test on the first battery system or the second battery system includes: After the first battery system or the second battery system is initially inspected, the electronic control unit adjusts the input power of the first bidirectional PCS or the second bidirectional PCS, and controls the charging power of the first bidirectional PCS to the first battery system or the second bidirectional PCS to the second battery system, until the first battery system or the second battery system is fully charged and stops charging; The electronic control unit starts the grid voltage disconnection mode, the load uploads the load condition to the first bidirectional PCS or the second bidirectional PCS, the first bidirectional PCS or the second bidirectional PCS reports the load status to the electronic control unit, and the electronic control unit discharges the first battery system or the second bidirectional PCS based on whether the load is capacitive or inductive, and records the battery capacity of the first battery system or the second battery system when the capacity of the first battery system or the second bidirectional PCS is fully discharged.

8. A redundant energy storage integrated testing method, the redundant energy storage system comprising: A first battery system, a second battery system, a first bidirectional PCS and a second bidirectional PCS; the first battery system and the first bidirectional PCS are connected via a communication and charging and discharging line; The second battery system is connected to the second bidirectional PCS via a communication and charging and discharging line; characterized in that the testing method comprises: The charging and discharging state, power and voltage of the first battery system and the second battery system are controlled by controlling the closing of the connection lines between the first bidirectional PCS and the second bidirectional PCS, the first bidirectional PCS and the external load, and the second bidirectional PCS and the external load, and by sending control signals to the first bidirectional PCS and the second bidirectional PCS.

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