Battery management test system, battery simulation device and battery array management module test tool

Abstract

The invention discloses a battery management test system, a battery simulation device and a battery array management module test tool, and relates to the technical field of battery management system testing, the disclosed battery management test system comprises a battery cluster management module, a battery array management module and a battery simulation module; the battery cluster management module is respectively connected with the battery array management module and the battery simulation module; the battery simulation module is used for simulating and generating battery information of a plurality of single batteries when the system is powered on, and transmitting the battery information to the battery cluster management module; the battery cluster management module is used for monitoring the plurality of single batteries generated by simulation according to the battery information and generating single battery monitoring results corresponding to the single batteries; and the battery array management module is used for managing the battery cluster management module according to the monitoring result of each single battery and obtaining battery management data.

Description

Technical Field

[0001] The present invention relates to the technical field of battery management system testing, and in particular to a battery management testing system, a battery simulation device, and a battery array management module testing tool. Background Art

[0002] Depending on the battery composition and system scale of the energy storage system, traditional battery management test systems generally have two structures: the first is a two-level topology (BMU (Battery Management Unit) + BCU (Battery Control Unit)), and the second is a three-level topology (BMU + BCU + BAU (Business As Usual Battery Array Management Unit)).

[0003] Large-scale energy storage systems with numerous parallel battery clusters require a three-level battery management system. A three-level topology energy storage system consists of multiple BMUs, multiple BCUs, and a single BAU. Due to the large number of batteries, complex structure, and bulky, unwieldy design of a three-level architecture, setting up a testing environment during the R&D and testing phase is costly and time-consuming. Furthermore, a single energy storage system can only test one management solution, resulting in low efficiency. Summary of the Invention

[0004] The main purpose of the present invention is to provide a battery management test system, a battery simulation device and a battery array management module test tooling, aiming to solve the technical problem of high cost and low efficiency of the traditional three-level topology structure.

[0005] To achieve the above objectives, the present invention provides a battery management test system, which includes:

[0006] Battery cluster management module, battery array management module and battery simulation module;

[0007] The battery cluster management module is connected to the battery array management module and the battery simulation module respectively;

[0008] The battery simulation module is used to simulate and generate battery information of multiple single batteries when the system is powered on, and transmit the battery information to the battery cluster management module;

[0009] The battery cluster management module is configured to monitor the plurality of cells generated by simulation according to the battery information and generate a cell monitoring result corresponding to each cell;

[0010] The battery array management module is used to manage the battery cluster management module according to the monitoring results of each single battery and obtain battery management data.

[0011] In one embodiment, the battery management test system further includes:

[0012] Switch module;

[0013] The switch module is connected to the battery cluster management module and the electronic load respectively;

[0014] The voltage sampling terminal of the battery cluster management module is connected to a high-voltage power supply to form a high-voltage box for simulating the voltage of the battery pack terminal;

[0015] The switch module is connected to the high-voltage box and is used to control the charge and discharge switching of the high-voltage box;

[0016] The electronic load is connected in series with the AC-to-DC power supply to form a closed-loop current circuit, and assists the switch module in performing charge and discharge switching.

[0017] In one embodiment, the battery management test system further includes:

[0018] Protection board and display screen;

[0019] The battery array management module is connected to the protection board and the display screen respectively; the protection board and the display screen are connected to a DC power supply respectively;

[0020] The protection board is used to protect the battery array management module;

[0021] The display screen is used to display the battery management data of the battery array management module.

[0022] In one embodiment, the battery management test system further includes:

[0023] Monitoring module;

[0024] The monitoring module is connected to the battery cluster management module and the battery array management module respectively;

[0025] The monitoring module is used to monitor the data transmission status between the battery cluster management module and the battery array management module.

[0026] In one embodiment, the battery management test system further includes:

[0027] Communication module;

[0028] The communication module is connected to the battery array management module and is used to upload the battery management data of the battery array management module to the cloud;

[0029] The communication module is further configured to transmit the control instructions issued by the cloud to the battery array management module;

[0030] The battery array management module is further configured to control the battery cluster management module according to the control instruction.

[0031] In one embodiment, the battery management test system further includes:

[0032] Cut off the module;

[0033] The cut-off module is connected to the battery array management module and the battery simulation module respectively;

[0034] The disconnection module is used to disconnect the battery array management module from the battery simulation module and transmit a power-on signal to the battery simulation module when a communication failure is detected between the battery array management module and the battery simulation module.

[0035] In one embodiment, the switch module includes:

[0036] A first air switch and a second air switch;

[0037] The first end of the first air switch is connected to the negative electrode of the AC-DC power supply and the third end of the second air switch respectively, the second end of the first air switch is connected to the positive electrode of the high-voltage box and the second end of the second air switch respectively, the third end of the first air switch is connected to the negative electrode of the electronic load and the first end of the second air switch respectively, and the fourth end of the first air switch is connected to the negative electrode of the high-voltage box and the fourth end of the second air switch respectively;

[0038] The first end of the second air switch is connected to the negative pole of the electronic load, the second end of the second air switch is connected to the positive pole of the high-voltage box, the third end of the second air switch is connected to the negative pole of the AC-to-DC power supply, and the fourth end of the second air switch is connected to the negative pole of the high-voltage box.

[0039] In one embodiment, the battery simulation module is further connected to the battery array management module via a Modbus communication interface to simulate battery environment data required to trigger an environmental control alarm test.

[0040] The present invention also provides a battery simulation device, which includes the battery management test system.

[0041] The present invention also provides a battery array management module testing tool, which includes the battery management testing system.

[0042] One or more technical solutions proposed in the present invention have at least the following technical effects:

[0043] The battery management test system proposed in the present invention includes: a battery cluster management module, a battery array management module, and a battery simulation module; the battery cluster management module is connected to the battery array management module and the battery simulation module respectively; the battery simulation module is used to simulate and generate battery information of multiple single batteries when the system is powered on, and transmit the battery information to the battery cluster management module; the battery cluster management module is used to monitor the multiple single batteries generated by simulation based on the battery information and generate single battery monitoring results corresponding to each single battery; the battery array management module is used to manage the battery cluster management module based on each of the single battery monitoring results and obtain battery management data. The present invention constructs a three-level topology test fixture by combining the battery cluster management module, the battery array management module, and the battery simulation module, thereby achieving a simple structure, time-saving and labor-saving environment construction, low cost, simple operation, high safety, and the ability to add modules or modify at any time, and make adjustments according to technical requirements. It is suitable for the research and development testing of various energy storage systems, and achieves safe and efficient battery management testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] Figure 1 A schematic diagram of the module structure provided in Example 1 of the battery management test system of the present invention;

[0047] Figure 2 A schematic diagram of the module structure provided by the second embodiment of the battery management test system of the present invention;

[0048] Figure 3 This is a schematic diagram of the module structure provided in Example 3 of the battery management test system of the present invention.

[0049] Description of Figure Numbers:

[0050]

[0051]

[0052] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0053] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0055] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] A battery management system (BMS) monitors battery status, provides communication interfaces and protection systems, and enables comprehensive control and protection of the energy storage battery system, thereby ensuring safe and stable battery operation, improving battery cycle efficiency, and extending battery life. Depending on the battery composition and system scale and capacity within the energy storage system, battery management systems generally adopt a hierarchical management model. There are two typical structures: a two-tier topology (BMU + BCU) and a three-tier topology (BMU + BCU + BAU).

[0058] Large energy storage systems with numerous parallel battery clusters require a three-level battery management system. A three-level topology consists of multiple BMUs, multiple BCUs, and a single BAU, using the CAN bus for internal data transmission. Due to the large number of batteries, complex structure, and bulky, unwieldy design of a three-level architecture, setting up a testing environment during the R&D and testing phase is costly and time-consuming. Furthermore, only one management solution can be tested within a single energy storage system.

[0059] To address the above-mentioned issues, this embodiment proposes a battery management test system, comprising: a battery cluster management module, a battery array management module, and a battery simulation module; the battery cluster management module is connected to the battery array management module and the battery simulation module, respectively; the battery simulation module is configured to simulate and generate battery information for multiple single cells when the system is powered on, and transmit the battery information to the battery cluster management module; the battery cluster management module is configured to monitor the simulated multiple single cells based on the battery information and generate single cell monitoring results corresponding to each single cell; and the battery array management module is configured to manage the battery cluster management module based on each of the single cell monitoring results and obtain battery management data. By constructing a three-level topology test fixture comprising the battery cluster management module, the battery array management module, and the battery simulation module, the present invention achieves a simple structure, time-saving and labor-saving environment setup, low cost, simple operation, high safety, and the ability to add modules or modify at any time, making adjustments based on technical requirements. This makes it suitable for the R&D and testing of various energy storage systems, thereby achieving safe and efficient battery management testing.

[0060] Based on this, the embodiment of the present invention provides a battery management test system, referring to Figure 1 , Figure 1 FIG. 1 is a structural diagram of a first embodiment of a battery management test system according to the present invention.

[0061] In this embodiment, the battery management test system includes:

[0062] The battery management test system includes:

[0063] Battery cluster management module 1, battery array management module 2 and battery simulation module 3;

[0064] The battery cluster management module 1 is connected to the battery array management module 2 and the battery simulation module 3 respectively;

[0065] The battery simulation module 3 is used to simulate and generate battery information of multiple single batteries when the system is powered on, and transmit the battery information to the battery cluster management module 1;

[0066] The battery cluster management module 1 is configured to monitor the plurality of cells generated by simulation according to the battery information and generate a cell monitoring result corresponding to each cell;

[0067] The battery array management module 2 is used to manage the battery cluster management module according to the monitoring results of each single battery and obtain battery management data.

[0068] It should be noted that the above-mentioned battery cluster management module 1 is composed of several BCUs;

[0069] It should be noted that the battery array management module 2 is BAU;

[0070] It should be noted that the battery simulation module 3 is capable of generating battery information and replacing the actual battery module;

[0071] It should be noted that the above battery information includes battery voltage, current, temperature, charge and discharge capacity, charge and discharge limit parameters, alarm information and fault information, etc.

[0072] It should be noted that the above single battery monitoring results are monitoring results obtained by summing up the specific values of each parameter in the corresponding battery information by each BCU;

[0073] It should be noted that the above-mentioned battery management data is the information of all BCUs collected by BAU, which is responsible for monitoring the operating status of the entire system, calculating the state of charge and health status, and managing the records of control commands issued by BAU to BCU according to the preset control strategy.

[0074] It is understandable that the number of BCUs in the battery cluster management module 1 and the preset control strategy can be adjusted according to actual experimental requirements.

[0075] In a specific implementation, the battery cluster management module 1 is connected to the battery array management module 2 via a CAN bus, supporting high-speed data transmission to ensure that the BAU obtains the monitoring data of all BCUs in real time. The battery cluster management module 1 and the battery simulation module 3 use RS-485 or Ethernet communication to transmit the simulated single battery information. Each BCU is assigned a unique CAN ID, and the BAU identifies the data source of different battery clusters through the ID. The battery simulation module 3 can simulate complex scenarios such as battery aging (capacity decay) and short circuit faults. For example, the battery cluster management module 1 monitors the simulated multiple single batteries according to the battery information in the following manner: scan the single cell voltage every 100ms to detect whether it exceeds the threshold, the temperature sampling period is 1s, and a sliding window filtering algorithm is used to eliminate noise. If a single cell overvoltage is detected, the BCU triggers the balancing circuit and uploads the fault code. When the temperature exceeds the limit, the BCU sends an alarm signal and requests the BAU to reduce power operation. The BAU polls all BCU data through the CAN bus to build a global battery array status table. Exemplarily, the battery array management module 2 manages the battery cluster management module 1 based on the monitoring results of each single battery as follows: the state of charge is calculated based on the ampere-hour integration method, and the health status is estimated in combination with historical charge and discharge data. If a BCU reports a single cell overvoltage, the BAU issues an instruction to limit the charging current of the cluster to 50%. When multiple clusters are connected in parallel, the BAU starts an active balancing strategy based on the difference in the state of charge of each cluster. When multiple BCUs report a temperature alarm, the BAU triggers system-level protection (such as disconnecting the contactor).

[0076] This embodiment achieves efficient collaboration among the battery cluster management module 1, the battery array management module 2, and the battery simulation module 3 through modular design, high-precision simulation, reliable communication protocols, and dynamic management strategies. This includes hardware and software collaboration: the battery simulation module 3 replaces real batteries, reducing costs. Hierarchical management: The BCU is responsible for single-cell monitoring, while the BAU coordinates system-level decision-making, creating a clear hierarchy. Dynamic response: From single-cell anomaly detection to system-level protection, full-link automated processing ensures test safety and efficiency.

[0077] The battery management test system of this embodiment includes: a battery cluster management module, a battery array management module, and a battery simulation module; the battery cluster management module is connected to the battery array management module and the battery simulation module respectively; the battery simulation module is used to simulate and generate battery information of multiple single batteries when the system is powered on, and transmit the battery information to the battery cluster management module; the battery cluster management module is used to monitor the multiple single batteries generated by simulation according to the battery information, and generate single battery monitoring results corresponding to each single battery; the battery array management module is used to manage the battery cluster management module according to each of the single battery monitoring results, and obtain battery management data. The present invention constructs a three-level topology test fixture by combining the battery cluster management module, the battery array management module, and the battery simulation module, thereby achieving a simple structure, time-saving and labor-saving environment construction, low cost, simple operation, high safety, and the ability to add modules or modify at any time, and make adjustments according to technical requirements. It is suitable for the research and development testing of various energy storage systems, and achieves safe and efficient battery management testing.

[0078] Based on the first embodiment of the present invention, a second embodiment of the battery management test system of the present invention is proposed. In the second embodiment of the present invention, the same or similar contents as those of the first embodiment can be referred to the above introduction and will not be described in detail. Figure 2 , Figure 2 This is a schematic diagram of the module structure provided in Example 2 of the battery management test system of the present invention.

[0079] In this embodiment, the battery management test system further includes:

[0080] Switch module 4;

[0081] The switch module 4 is connected to the battery cluster management module 1 and the electronic load 5 respectively;

[0082] The voltage sampling terminal of the battery cluster management module 1 is connected to the high-voltage power supply 6 to form a high-voltage box 7 for simulating the voltage at the battery pack end;

[0083] The switch module 4 is connected to the high-voltage box 7 and is used to control the charge and discharge switching of the high-voltage box 7;

[0084] The electronic load 5 is connected in series with the AC-to-DC power supply 8 to form a closed-loop current circuit, and assists the switch module 1 in performing charge and discharge switching.

[0085] It should be noted that the switch module 4 is composed of two air switches;

[0086] It should be noted that the electronic load 5 is a programmable DC electronic load with 600W and 1200W specifications;

[0087] It should be noted that the high voltage power supply 6 is a programmable DC power supply (such as Keysight N8900 series), which supports a wide range of voltage output (for example, 0-1000V) and an accuracy of ±0.1% to meet the sampling requirements of the battery management system.

[0088] It is understandable that the AC / DC power supply 8 is a bidirectional AC / DC power supply that supports energy feedback to the grid and reduces test energy consumption.

[0089] In a specific implementation, the voltage sampling end of the battery cluster management module 1 is connected to the output end of the high-voltage power supply 6 through a high-precision voltage divider circuit to ensure that the sampling signal is consistent with the actual battery pack. An optocoupler or isolation amplifier is added to prevent the high-voltage circuit from interfering with or damaging the low-voltage circuit of the battery cluster management module 1. Two sets of air switches are used to control the charging (high-voltage power supply → battery cluster) and discharging (battery cluster → electronic load) paths respectively to avoid conflicts. In the discharge test, the electronic load 5 absorbs current to simulate the battery supplying power to the outside; in the charging test, it switches to the "source" mode. After the AC-to-DC power supply 8 is connected in series with the electronic load 5, a closed-loop current path is formed by controlling the output voltage of the AC / DC. For example, the AC / DC acts as a source during charging and as an energy feedback end for the load during discharging.

[0090] In this embodiment, the battery management test system further includes:

[0091] Protection plate 9 and display screen 10;

[0092] The battery array management module 2 is connected to the protection board 9 and the display screen 10 respectively; the protection board 9 and the display screen 10 are connected to the DC power supply 11 respectively;

[0093] The protection board 9 is used to protect the battery array management module 2;

[0094] The display screen 10 is used to display the battery management data of the battery array management module 2 .

[0095] It should be noted that the above-mentioned protection plate 9 can be a multi-section protection plate, or a smart protection plate, etc.

[0096] It should be noted that the display screen 10 may be an OLED display screen or a TFT color screen.

[0097] In a specific implementation, the protection board 9 is mainly used to prevent the battery array management module 2 from being damaged due to overvoltage, overcurrent, short circuit, abnormal temperature and other working conditions. When an abnormality is detected, the connection between the battery array management module 2 and the external circuit is cut off to avoid the spread of the fault, and a protection trigger signal is sent to the battery array management module 2 or the host computer to record the fault type (such as overvoltage code 0x01). The display screen 10 is mainly used for real-time data display: displaying battery management data (voltage, current, SOC, temperature, fault code, etc.), supporting parameter settings (such as protection threshold adjustment), test mode switching, storing and replaying key data curves during the test (such as charging and discharging voltage fluctuations). The protection board 9 ensures the safety of the battery array management module 2 under extreme working conditions through multi-level hardware protection circuits and rapid response mechanisms; the display screen 10 provides an intuitive human-computer interaction interface to realize test data visualization and operation control. After the two are combined, the system can meet the full life cycle requirements of R&D debugging, production line testing and after-sales diagnosis. The actual implementation needs to focus on solving problems such as high-precision signal acquisition, real-time guarantee and adaptability to industrial environments. It is suitable for battery management verification in scenarios such as energy storage systems and electric vehicles.

[0098] In this embodiment, the battery management test system further includes:

[0099] Monitoring module 12;

[0100] The monitoring module 12 is connected to the battery cluster management module 1 and the battery array management module 2 respectively;

[0101] The monitoring module 12 is used to monitor the data transmission status between the battery cluster management module 1 and the battery array management module 2 .

[0102] In a specific implementation, the monitoring module 12 collects communication data packets (such as voltage / temperature reports, balancing instructions, and fault codes) between the battery cluster management module 1 and the battery array management module 2 in real time, monitoring metrics such as communication rate, packet loss rate, and latency. CRC checks and hash algorithms (such as SHA-1) verify data tampering and transmission errors. It supports industrial bus protocols such as CAN, RS485, and EtherCAT, and parses custom application layer protocols (such as SAE J1939 and Modbus). It detects communication interruptions, data overruns (such as cell voltage spikes), and timing errors (such as command response timeouts), triggering graded alarms. It records complete communication logs and key events (timestamps, fault types, and raw data), supporting offline playback and analysis. Through hardware-accelerated protocol processing, intelligent anomaly detection algorithms, and multi-dimensional data storage, the monitoring module 12 achieves in-depth monitoring of the entire communication link between the battery cluster management module 1 and the battery array management module 2. This design not only meets the high reliability requirements of power battery systems but is also scalable to complex scenarios such as energy storage power stations and drone battery packs.

[0103] In this embodiment, the battery management test system further includes:

[0104] Communication module 13;

[0105] The communication module 13 is connected to the battery array management module 2 and is used to upload the battery management data of the battery array management module 2 to the cloud;

[0106] The communication module 13 is further used to transmit the control instructions issued by the cloud to the battery array management module 2;

[0107] The battery array management module 2 is further configured to control the battery cluster management module 1 according to the control instruction.

[0108] In a specific implementation, the communication module 13 collects the battery management data from the battery array management module 2 in real time and uploads it to the cloud through a secure channel. It receives control commands (such as balancing start and stop, and charge and discharge strategy adjustment) issued by the cloud and forwards them to the battery array management module 2 for supervision and execution.

[0109] Compatible with the local communication protocols (such as CAN, RS485) and cloud IoT protocols (such as MQTT, HTTP / HTTPS) of the above-mentioned battery array management module 2. Key data is stored locally when the network is interrupted and automatically retransmitted after recovery. The above-mentioned communication module 13 realizes efficient two-way interaction between battery management data and the cloud through multi-mode network redundancy, end-to-end security reinforcement, and intelligent command scheduling. Its design not only meets automotive-grade reliability standards (such as AEC-Q100), but can also be expanded to scenarios such as energy storage power stations and battery swap cabinets.

[0110] In this embodiment, the battery management test system further includes:

[0111] Cutting module 14;

[0112] The cut-off module 14 is connected to the battery array management module 2 and the battery simulation module 3 respectively;

[0113] The disconnection module 14 is used to disconnect the battery array management module 2 from the battery simulation module 3 and transmit a power-on signal to the battery simulation module 3 when a communication failure is detected between the battery array management module 2 and the battery simulation module 3 .

[0114] In a specific implementation, the above-mentioned cut-off module 14 monitors the communication link status (such as the CAN bus explicit / implicit level, heartbeat packet period, CRC check error rate) between the above-mentioned battery array management module 2 and the above-mentioned battery simulation module 3 in real time. When the communication is interrupted or the data is abnormal, the electrical connection between the two is cut off by a physical switch to prevent the simulation module from losing control due to erroneous instructions, and after the disconnection, a hardware reset signal (not software restart) is sent to the above-mentioned battery simulation module 3 to ensure that its status is completely reset. The original communication data (such as the last 10 frames of messages), environmental parameters (temperature, power supply voltage) and action timestamp when the fault is triggered are recorded. The above-mentioned cut-off module 14 is suitable for high-risk test scenarios (such as thermal runaway simulation and high-voltage short-circuit testing) through hardware-level rapid disconnection, multi-level fault diagnosis, and safe reset control.

[0115] Based on the second embodiment of the present invention, a third embodiment of the battery management test system of the present invention is proposed. In the third embodiment of the present invention, the same or similar contents as those of the second embodiment can be referred to the above introduction and will not be described in detail. Figure 3 , Figure 3 This is a schematic diagram of the module structure provided in Example 3 of the battery management test system of the present invention.

[0116] In this embodiment, the switch module 4 includes:

[0117] A first air switch K1 and a second air switch K2;

[0118] The first end of the first air switch K1 is connected to the negative electrode of the AC-DC power supply 8 and the third end of the second air switch K2, respectively; the second end of the first air switch K1 is connected to the positive electrode of the high-voltage box 7 and the second end of the second air switch K2, respectively; the third end of the first air switch K1 is connected to the negative electrode of the electronic load 5 and the first end of the second air switch K2, respectively; the fourth end of the first air switch K1 is connected to the negative electrode of the high-voltage box 7 and the fourth end of the second air switch K2, respectively;

[0119] The first end of the second air switch K2 is connected to the negative pole of the electronic load 5, the second end of the second air switch K2 is connected to the positive pole of the high-voltage box 7, the third end of the second air switch K2 is connected to the negative pole of the AC-to-DC power supply 8, and the fourth end of the second air switch K2 is connected to the negative pole of the high-voltage box 7.

[0120] It should be noted that the first air switch K1 and the second air switch K2 may be electronic air switches or drawer-type air switches.

[0121] In a specific implementation, the main circuit connection terminals of the first air switch K1 and the second air switch K2 are connected to the P+ and P- of the high-voltage box 7, and the B+ and B- of the high-voltage box 7 are short-circuited, so that the current flow in the high-voltage box 7 forms a loop. Normally, the position of the power line needs to be changed during charge and discharge conversion, but the first air switch K1 and the second air switch K2 are installed on the DC output side. By operating the opening and closing of the first air switch K1 and the second air switch K2, the charge and discharge switching can be achieved. The system is successfully powered on, the AC to DC power supply 8 is powered on, and the electronic load 5 switch is started. If the system has no faults and no alarms, the display screen of the electronic load 5 will display the DC output voltage value of the AC to DC power supply 8. Click the button on the display screen of the electronic load 5, enter the required current, confirm that the number on the display screen is correct, and then click the output switch.

[0122] In this embodiment, the battery simulation module 3 is further connected to the battery array management module 2 via a Modbus communication interface, and is used to simulate the battery environment data required to trigger the environmental control alarm test.

[0123] In a specific implementation, the battery simulation module 3 is connected to the battery array management module 2 via Modbus communication to simulate air conditioning data information and modify the temperature and humidity values directly on Modbus. After modification, the Modbus simulation data will be transmitted to the display screen 10 and the battery cluster management module 1 through the battery array management module 2.

[0124] In addition, the charging current is set using the electronic load 5, and the single cell voltage is set to be greater than the single cell overvoltage parameter value through the battery simulation module 3. At this time, the host computer will upload the alarm status. The alarm information will also be transmitted to the battery array management module 2 through the battery cluster management module 1, and then transmitted to the cloud by the battery array management module 2. During this process, the battery array management module 2 will also determine what corresponding actions the system will take due to this alarm. For example, in the case of a level 1 alarm, the battery array management module 2 will send a command to the battery cluster management module 1 requesting the system to reduce the charging current by half. In the case of a level 2 alarm, the battery array management module 2 will send a command to the battery cluster management module 1 requesting the system to reduce the charging current to zero. In the case of a level 3 alarm, the battery array management module 2 will control the battery cluster management module 1 to disconnect the contactor, reduce the system high voltage, and the battery array management module 2 will upload a series of actions to the cloud platform. After setting the voltage value to the recovery value, the battery array management module 2 will determine whether the high-voltage conditions are met. The contactor will close, the system will be high-voltage, and the charging and discharging current will be requested to resume. The battery array management module 2 will also update the action status to the cloud and the display screen.

[0125] Disconnect the communication between the battery simulation module 3 and the battery cluster management module 1, and observe whether the battery array management module 2 uploads fault information to the cloud, whether the battery array management module 2 controls the contactor of the battery cluster management module 1 to be open, and whether the system is under high voltage. After restoring the battery management system communication value, the battery array management module 2 determines whether the high voltage condition is met. If so, the contactor is closed, the system is under high voltage, and the charging and discharging current is restored. The battery array management module 2 also updates the operation status to the cloud.

[0126] Furthermore, to achieve the above objectives, the present invention further provides a battery simulation device, comprising the battery management and testing system described above. Other embodiments or specific implementations of the battery management and testing system of the present invention may refer to the above embodiments of the battery management and testing system and are not further detailed here.

[0127] Furthermore, to achieve the aforementioned objectives, the present invention further provides a battery array management module testing fixture, comprising the battery management testing system described above. Other embodiments or specific implementations of the battery management testing system of the present invention may refer to the aforementioned embodiments of the battery management testing system and are not further detailed here.

[0128] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A battery management test system, characterized in that: The battery management test system includes: Battery cluster management module, battery array management module and battery simulation module; The battery cluster management module is connected to the battery array management module and the battery simulation module respectively; The battery simulation module is used to simulate and generate battery information of multiple single batteries when the system is powered on, and transmit the battery information to the battery cluster management module; The battery cluster management module is configured to monitor the plurality of cells generated by simulation according to the battery information and generate a cell monitoring result corresponding to each cell; The battery array management module is used to manage the battery cluster management module according to the monitoring results of each single battery and obtain battery management data.

2. The battery management test system according to claim 1, wherein: The battery management test system further includes: Switch module; The switch module is connected to the battery cluster management module and the electronic load respectively; The voltage sampling terminal of the battery cluster management module is connected to a high-voltage power supply to form a high-voltage box for simulating the voltage of the battery pack terminal; The switch module is connected to the high-voltage box and is used to control the charge and discharge switching of the high-voltage box; The electronic load is connected in series with the AC-to-DC power supply to form a closed-loop current circuit, and assists the switch module in performing charge and discharge switching.

3. The battery management test system according to claim 1, wherein: The battery management test system further includes: Protection board and display screen; The battery array management module is connected to the protection board and the display screen respectively; the protection board and the display screen are connected to a DC power supply respectively; The protection board is used to protect the battery array management module; The display screen is used to display the battery management data of the battery array management module.

4. The battery management test system according to claim 1, wherein: The battery management test system further includes: Monitoring module; The monitoring module is connected to the battery cluster management module and the battery array management module respectively; The monitoring module is used to monitor the data transmission status between the battery cluster management module and the battery array management module.

5. The battery management test system according to claim 1, wherein: The battery management test system further includes: Communication module; The communication module is connected to the battery array management module and is used to upload the battery management data of the battery array management module to the cloud; The communication module is further configured to transmit the control instructions issued by the cloud to the battery array management module; The battery array management module is further configured to control the battery cluster management module according to the control instruction.

6. The battery management test system according to claim 1, wherein: The battery management test system further includes: Cut off the module; The cut-off module is connected to the battery array management module and the battery simulation module respectively; The disconnection module is used to disconnect the battery array management module from the battery simulation module and transmit a power-on signal to the battery simulation module when a communication failure is detected between the battery array management module and the battery simulation module.

7. The battery management test system according to claim 2, wherein: The switch module includes: A first air switch and a second air switch; The first end of the first air switch is connected to the negative electrode of the AC-DC power supply and the third end of the second air switch respectively, the second end of the first air switch is connected to the positive electrode of the high-voltage box and the second end of the second air switch respectively, the third end of the first air switch is connected to the negative electrode of the electronic load and the first end of the second air switch respectively, and the fourth end of the first air switch is connected to the negative electrode of the high-voltage box and the fourth end of the second air switch respectively; The first end of the second air switch is connected to the negative pole of the electronic load, the second end of the second air switch is connected to the positive pole of the high-voltage box, the third end of the second air switch is connected to the negative pole of the AC-to-DC power supply, and the fourth end of the second air switch is connected to the negative pole of the high-voltage box.

8. The battery management test system according to claim 1, wherein: The battery simulation module is also connected to the battery array management module via a Modbus communication interface, and is used to simulate the battery environment data required to trigger the environmental control alarm test.

9. A battery simulation device, characterized in that: The battery protection device comprises: the battery management test system according to any one of claims 1 to 8.

10. A battery array management module testing tool, characterized in that: The battery array management module testing tool comprises: the battery management testing system according to any one of claims 1 to 8.

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