BMS simulation test circuit and device
By setting the BMU close to the battery simulation module in the BMS simulation test circuit, the signal accuracy problem caused by the long distance between the BMU and the single-cell simulation module is solved, and a more accurate BMS simulation test is achieved.
Patent Information
- Application Number
- CN202421483590.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In the existing BMS simulation test methods, due to the long distance between the BMU and the single-cell simulation module, the length of the acquisition line affects the signal accuracy, and it is impossible to accurately simulate the working state of the real vehicle power battery.
A BMS simulation test circuit was designed, including a real-time simulation system, a BMS-specific simulation module and a BMS integrated module. By setting the BMU close to the battery simulation module, the wiring harness length between the BMU and the battery simulation module is reduced and the signal accuracy is improved.
It effectively reduces the impact of wiring harness length on signal transmission, improves the accuracy of simulated signals, and enables BMS simulation test to more accurately simulate the working state of the real vehicle power battery.
Smart Images
Figure CN222914057U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of simulation testing, and particularly relates to a BMS simulation testing circuit and device. Background Art
[0002] In the three-electricity control system of electric vehicles, the BMS (Battery Management System) control system shoulders the important responsibilities of ensuring the safe operation of the power system, improving the charging and discharging efficiency, and extending the driving range.
[0003] In order to comprehensively verify and test the functions of BMS software and hardware, it is necessary to use a simulation testing system to perform simulation testing on the BMS to be tested. By simulation, various sensor signals required during the operation of the BMS are provided, and each control signal of the BMS is detected, enabling closed-loop simulation testing of the BMS hardware loop.
[0004] Currently, in the simulation testing method for BMS, since the distance between the BMU (Battery Management Unit) that collects the voltage of single cells in the BMS and the simulation module of the single cells is relatively long, the length of the acquisition line connected between the BMU and the single cell simulation module affects the accuracy of the sampling signal, resulting in a certain deviation in the signal actually collected by the BMU and being unable to accurately simulate the actual working state of the power battery of a real vehicle. Utility Model Content
[0005] The embodiments of this application provide a BMS simulation testing circuit and device, which can improve the technical defects existing in the simulation testing of BMS in related technologies.
[0006] In a first aspect, the embodiments of this application provide a BMS simulation testing circuit, which includes:
[0007] A real-time simulation system, used to connect to a host computer to obtain a battery simulation model;
[0008] A BMS dedicated simulation module, connected to the real-time simulation system, for generating BMS simulation signals based on the battery simulation model;
[0009] A BMS integration module, including a main module interface and at least two battery simulation modules. The main module interface is connected to the BMS dedicated simulation module, and the battery simulation modules are connected to the real-time simulation system;
[0010] The main module interface is used to connect to the BCU of the BMS to be tested; the battery simulation modules are used to connect to the corresponding BMUs in the BMS to be tested through sampling lines and generate battery simulation parameters based on the battery simulation model; wherein, the BMUs are closely arranged near the battery simulation modules.
[0011] In some embodiments, the real-time simulation system includes:
[0012] A real-time simulator for running a battery simulation model;
[0013] An input / output subsystem connected to the real-time simulator via a PCIe bus, for providing an input / output interface or a communication control interface for connecting to a BMS dedicated simulation module and a BMS integration module.
[0014] In some embodiments, the BMS dedicated simulation module includes at least one of a high-voltage simulation module, an insulation resistance and capacitance simulation module, a temperature simulation module, or a charging pile simulation module.
[0015] In some embodiments, the BMS dedicated simulation module further includes:
[0016] A high-voltage programmable power supply connected between the main module interface and the real-time simulation system, for generating an analog high-voltage signal and / or a pre-charge current signal based on the battery simulation model.
[0017] In some embodiments, the high-voltage simulation module, the insulation resistance and capacitance simulation module, the temperature simulation module, or the charging pile simulation module is connected to the input / output subsystem via a PCIe bus, the high-voltage programmable power supply is connected to the input / output subsystem via a CAN bus, and the battery simulation module is connected to the input / output subsystem via a PCIe bus.
[0018] In some embodiments, the main module interface is connected to the input / output subsystem via an IO bus;
[0019] The real-time simulator is used to provide a simulation test signal to the BCU through the input / output subsystem and the main module interface.
[0020] In some embodiments, the BMS simulation test circuit further includes:
[0021] A fault simulation unit connected between the main module interface and the input / output subsystem, for generating a first fault simulation signal based on a fault test signal sent by the real-time simulator;
[0022] The battery simulation module further includes a fault injection circuit, and the fault injection circuit is used to generate a second fault simulation signal based on a fault test signal sent by the real-time simulator.
[0023] In a second aspect, an embodiment of the present application provides a BMS simulation test device, including:
[0024] A cabinet;
[0025] The BMS simulation test circuit of the first aspect, and the BMS simulation test circuit is arranged in the cabinet;
[0026] The cabinet is also used to place the BMS under test, so that the BMS simulation test circuit can perform BMS simulation tests on the BMS under test.
[0027] In some embodiments, each BMU of the BMS under test is arranged on the same layer as the battery simulation module of the BMS simulation test circuit to which it is correspondingly connected.
[0028] In some embodiments, the BMS simulation test device further includes:
[0029] A proximity switch module, connected to the power control unit of the cabinet, for disconnecting the power supply circuit of the power control unit when it detects that the cabinet door is opened.
[0030] Compared with the prior art, in the BMS simulation test circuit and device provided by the embodiments of the present application, the real-time simulation system can generate BMS simulation signals by controlling the BMS dedicated simulation module and provide them to the BCU of the BMS to be tested through the main module interface. The real-time simulation system can also control each battery simulation module to provide battery simulation parameters for the corresponding BMU in the BMS to be tested. By providing corresponding simulation parameters for the BCU and BMU in the BMS to be tested respectively, the simulation test of the BMS to be tested can be realized. Moreover, since the BMU is arranged close to the battery simulation module, the sampling line between the BMU and the battery simulation module is short, which can effectively reduce the influence of the wire harness length on the signal transmission process and ensure the accuracy of the simulation signal. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0032] Figure 1 It is a schematic diagram of the module structure of the BMS simulation test circuit provided by an embodiment of the present application;
[0033] Figure 2 is Figure 1 a schematic diagram of the module structure of the real-time simulation system in the embodiment;
[0034] Figure 3 is Figure 1 a schematic diagram of the module structure of the BMS dedicated simulation module in the embodiment;
[0035] Figure 4 It is a schematic diagram of the module structure of the BMS simulation test circuit provided by another embodiment of the present application;
[0036] Figure 5It is a schematic diagram of the module structure of the BMS simulation test circuit provided by another embodiment of the present application;
[0037] Figure 6 It is a schematic diagram of the structure of the BMS simulation test device provided by an embodiment of the present application.
[0038] In the accompanying drawings:
[0039] 1. BMS simulation test circuit; 10. Real-time simulation system; 20. BMS dedicated simulation module; 30. BMS integration module; 31. Main module interface; 32. Battery simulation module; 40. Host computer; 11. Real-time simulator; 12. Input / output subsystem; 21. High-voltage simulation module; 22. Insulation resistance and capacitance simulation module; 23. Temperature simulation module; 24. Charging pile simulation module; 25. High-voltage programmable power supply; 50. Fault simulation unit; 321. Fault injection circuit; 100. BMS simulation test device; 2. Cabinet; 60. Door body. Detailed implementation manners
[0040] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.
[0041] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "comprising..." do not preclude the presence of additional identical elements in the process, method, article or device comprising the said elements.
[0042] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.
[0043] In the three-electricity control system of electric vehicles, the BMS (Battery Management System) control system shoulders the heavy responsibility of ensuring the safe operation of the power system, improving the charging and discharging efficiency, and extending the driving range.
[0044] In order to comprehensively verify and test the functions of BMS software and hardware, it is necessary to use a simulation test system to perform simulation tests on the BMS to be tested, provide various sensor signals required for the operation of the BMS through simulation, and detect each control signal of the BMS, so as to realize the closed-loop simulation test of the BMS hardware loop.
[0045] Currently, in the simulation test method of the BMS, since the distance between the BMU (Battery Management Unit) for voltage acquisition of single cells in the BMS and the simulation module of single cells is relatively long, the length of the acquisition line connected between the BMU and the single cell simulation module affects the accuracy of the sampling signal, resulting in a certain deviation in the signal actually collected by the BMU and unable to accurately simulate the actual working state of the power battery of a real vehicle.
[0046] To solve the above technical problems, the embodiments of the present application provide a BMS simulation test circuit and device. First, the BMS simulation test circuit provided by the embodiments of the present application will be introduced below.
[0047] Figure 1 The structural schematic diagram of the BMS simulation test circuit provided by an embodiment of the present application is shown. The BMS simulation test circuit includes a real-time simulation system 10, a BMS dedicated simulation module 20, and a BMS integration module 30.
[0048] The real-time simulation system 10 can be communicatively connected to the host computer 40 and obtain a battery simulation model through the host computer 40. By running the battery simulation model, the real-time simulation system 10 can provide various simulation parameters corresponding to the normal operation of the battery. Among them, the real-time simulation system 10 and the host computer 40 can be connected through Ethernet or other local area network connection methods.
[0049] The BMS dedicated simulation module 20 is connected to the real-time simulation system 10. When the real-time simulation system 10 runs the battery simulation model, it can send corresponding control signals to the BMS dedicated simulation module 20 to enable the BMS dedicated simulation module 20 to simulate various BMS simulation signals required for the normal operation of the BMS.
[0050] The BMS integration module 30 may include a main module interface 31 and at least two battery simulation modules 32.
[0051] The main module interface 31 can be connected to the BCU (Battery Control Unit) of the BMS under test when the BMS under test is connected to the BMS simulation test circuit.
[0052] The battery simulation module 32 can be connected to the BMU of the BMS under test when the BMS under test is connected to the BMS simulation test circuit. Among them, the number of battery simulation modules 32 can be set according to the number of BMUs in the BMS to be tested. For example, when the BMS to be tested includes two BMUs, two or more battery simulation modules 32 can be set in the BMS integration module 30, and each BMU in the BMS to be tested is respectively connected to the corresponding battery simulation module 32.
[0053] It should be noted that when the BMS to be tested is connected to the BMS simulation test circuit, the BMU can be set close to the battery simulation module 32, and the BMU and the battery simulation module 32 are connected through a sampling line. The length of the sampling line is approximately the same as the distance between the interface of the BMS and the interface of the battery simulation module 32. By setting the BMU close to the battery simulation module 32, the harness length between the BMU and the battery simulation module 32 can be minimized as much as possible, avoiding the influence of too long harness on the simulation signal and ensuring the accuracy of the simulation signal.
[0054] In the BMS integration module 30, the main module interface 31 can be connected to the BMS dedicated simulation module 20, and various dedicated signals generated by the real-time simulation system 10 controlling the BMS dedicated simulation module 20 can be provided to the BCU of the BMS under test through the main module interface 31 to implement the simulation test of the BMS.
[0055] The battery simulation module 32 can be connected to the real-time simulation system 10, and the real-time simulation system 10 can control the battery simulation module 32 to generate battery simulation parameters of the corresponding battery unit, such as voltage, current or temperature parameters, etc. It can be understood that each battery unit can include a single battery cell or multiple battery cells.
[0056] In this embodiment, the real-time simulation system 10 can generate BMS simulation signals by controlling the BMS dedicated simulation module 20 and provide them to the BCU of the BMS to be tested through the main module interface 31. The real-time simulation system 10 can also control each battery simulation module 32 to provide battery simulation parameters for the corresponding BMU in the BMS to be tested. By respectively providing corresponding simulation parameters for the BCU and BMU in the BMS to be tested, the simulation test of the BMS to be tested can be realized. And because the BMU is set close to the battery simulation module 32, the sampling line between the BMU and the battery simulation module 32 is short, which can effectively reduce the influence of the harness length on the signal transmission process and ensure the accuracy of the simulation signal.
[0057] Please refer to Figure 2 , in some embodiments, the above real-time simulation system 10 may include a real-time simulator 11 and an input / output subsystem 12.
[0058] The real-time simulator 11 has a certain computing power and can run the battery simulation model after downloading the battery simulation model from the host computer 40.
[0059] The input / output subsystem 12 can provide the sensor simulation interface and the actuator acquisition interface required for simulating and testing the BMS to be measured. That is, the input / output subsystem 12 can provide the required simulation signals to the BCU or BMU of the BMS to be measured, so that the BMS to be measured can run in the simulation environment. The input / output subsystem 12 can also collect the corresponding monitoring signals from the BCU or BMU of the BMS to be measured, so as to obtain the simulation test results of the BMS to be measured through the collected signals.
[0060] The input / output subsystem 12 can realize the input or output of analog signals and the input or output of digital signals through the sensor simulation interface and the actuator acquisition interface. In addition, the input / output subsystem 12 can also provide a communication control interface with the battery simulation module 32 and the BMS special simulation module 20. The real-time simulator 11 can send control signals to the battery simulation module 32 or the BMS special simulation module 20 through the input / output subsystem 12.
[0061] Please continue to refer to Figure 3 , in some embodiments, the above BMS special simulation module 20 may include at least one of a high-voltage simulation module 21, an insulation resistance and capacitance simulation module 22, a temperature simulation module 23, or a charging pile simulation module 24.
[0062] Each of the above simulation modules can provide corresponding BMS simulation signals, so that the BCU of the BMS to be measured can perform corresponding control according to the BMS simulation signals to realize the simulation test of the BMS to be measured.
[0063] Please continue to refer to Figure 3 , in some embodiments, the above BMS special simulation module 20 may further include a high-voltage programmable power supply 25.
[0064] The high-voltage programmable power supply 25 can be connected between the main module interface 31 and the real-time simulation system 10. When the real-time simulator 11 in the real-time simulation system 10 runs the battery simulation model, it can send corresponding control signals to the high-voltage programmable power supply 25 through the input / output subsystem 12, so that the high-voltage programmable power supply 25 generates an analog high-voltage signal or a pre-charge current signal, etc. The parameter signal generated by the high-voltage programmable power supply 25 can be provided to the BCU of the BMS to be measured through the main module interface 31.
[0065] In some embodiments, the connection between the above-mentioned BMS dedicated simulation module 20 and the input / output subsystem 12 can be through a PCIe (peripheral component interconnect express, high-speed serial computer expansion bus) bus or through a CAN (Controller Area Network) bus.
[0066] As an alternative implementation, as Figure 3 and Figure 4 shown, in the BMS dedicated simulation module 20, the high-voltage simulation module 21, the insulation resistance and capacitance simulation module 22, the temperature simulation module 23, or the charging pile simulation module 24 can be connected to the input / output subsystem 12 through a PCIe bus. The battery simulation module 32 can also be connected to the input / output subsystem 12 through a PCIe bus, while the high-voltage programmable power supply 25 can be connected to the input / output subsystem 12 through a CAN bus.
[0067] The PCIe bus has the characteristic of high signal real-time performance, which can ensure the real-time performance of simulation signals and achieve high-bandwidth data interaction. The CAN bus has the characteristic of flexible configuration. The high-voltage programmable power supply 25 communicates and expands based on the CAN bus, enabling flexible configuration of the power supply.
[0068] Please refer to Figure 4 , in some embodiments, the above-mentioned input / output subsystem 12 can also be connected to the main module interface 31 through an IO bus, and the real-time simulator 11 can be connected to the input / output subsystem 12 through a PCIe bus. When running the battery simulation model, the real-time simulator 11 can send simulation test signals to the connected BCU through the input / output subsystem 12 and the main module interface 31, and can also obtain the control signals generated by the BCU to judge the simulation results of the BMS to be tested.
[0069] As Figure 5 shown, in some embodiments, the above-mentioned BMS simulation test circuit can also include a fault simulation unit 50.
[0070] The fault simulation unit 50 can be connected between the main module interface 31 and the input / output subsystem 12. The real-time simulator 11 can send fault test signals to the fault simulation unit 50 based on the running battery simulation model. The fault simulation unit 50 can generate a first fault simulation signal according to the fault test signals and provide it to the BCU through the main module interface 31.
[0071] A fault injection circuit 321 may also be integrated in the battery simulation module 32. The simulator may also send a fault test signal to the battery simulation module 32 based on the running battery simulation model. The fault injection circuit 321 may generate a second fault simulation signal based on the fault test signal and provide the second fault simulation signal to the corresponding BMU.
[0072] Through the fault simulation unit 50 and the fault injection circuit 321 provided in the battery simulation module 32, corresponding fault simulation signals can be provided to the BCU and the BMU, thereby realizing the electrical fault simulation in the BMS simulation test process.
[0073] The embodiment of the present application also provides a BMS simulation test device. As Figure 6 shown, the BMS simulation test device 100 may include a cabinet 2 and the BMS simulation test circuit 1 in the above embodiment.
[0074] The BMS simulation test circuit 1 may be arranged in the cabinet 2.
[0075] The cabinet 2 may also place the BMS to be tested. The BMS to be tested may be connected to the BMS simulation test circuit 1 in the cabinet 2 to perform BMS simulation test on the BMS to be tested through the BMS simulation test circuit 1.
[0076] The BMU of the BMS to be tested may be correspondingly arranged in the cabinet 2 at a position close to the battery simulation module 32 corresponding to the BMU in the BMS simulation test circuit 1. The BCU of the BMS to be tested may be arranged at the bottom of the BMS integration module 30. Since the BMU is close to the corresponding battery simulation module 32, the connection between the BMU and the battery simulation module 32 can be realized through a shorter acquisition line, reducing the influence of the length of the acquisition wire harness on the signal, improving the simulation accuracy of the signal, and enabling the single-cell battery simulation channel between the BMU and the battery simulation module 32 to better simulate the working state of the power battery of the actual vehicle.
[0077] In some embodiments, the various BMUs of the BMS to be tested may be respectively arranged on the same layer as the battery simulation module 32 of the corresponding connected BMS simulation test circuit 1.
[0078] In the above embodiment, the cabinet 2 may be a standard network cabinet 2, for example, a 38U wide-body cabinet 2. Each module in the BMS simulation test circuit 1 may be a rack-mounted chassis structure, such as a 4U rack-mounted chassis, and each module may be respectively installed in the cabinet 2.
[0079] The BMS integration module 30 in the BMS simulation test circuit 1 can adopt an indented design. After the BMS integration module 30 is installed in the cabinet 2, there can still be a certain space on the same layer of the BMS integration module 30 to place the BMU of the BMS to be tested. At the same time, the interface of the battery simulation module 32 in the BMS integration module 30 can be opened on the side close to the BMU, so that the distance between the BMU and the corresponding battery simulation module 32 can be shortened as much as possible. Moreover, through the compact design, more battery simulation modules 32 can be integrated in the same-sized cabinet 2 space, providing more battery simulation channels for the BMS to be tested, so that the BMS simulation test circuit can meet the BMS to be tested with a large number of BMUs. For example, for a BMS that supports a long driving range, the number of BMUs it contains is usually greater than that of a BMS with a short driving range. By setting more battery simulation modules 32, the simulation test of the BMS with a long driving range can be realized.
[0080] By setting the cabinet 2 to accommodate the BMS simulation test circuit, the space of each layer in the cabinet 2 can be fully utilized to place each module of the BMS simulation test circuit, and sufficient layout space can be provided for the BMS to be tested, so that the BMS to be tested can be as close as possible to the corresponding connected module, thereby improving the signal simulation accuracy of the BMS and reducing the interference between signals.
[0081] In some embodiments, the above-mentioned battery simulation module 32 can be connected to the corresponding BMU through a Phoenix connector, so that the BMU and the battery simulation module 32 can be conveniently connected. The door body 60 of the cabinet 2 can be a transparent material door body, such as a transparent acrylic door body. During the simulation test of the BMS to be tested, the state of the BMS to be tested can be visualized through the transparent acrylic door body, making the test more convenient and providing more convenience for the complex test process.
[0082] In some embodiments, the BMS simulation test device 100 can further include a proximity switch module (not shown).
[0083] The proximity switch module can be connected to the power control unit PDU of the cabinet 2. The proximity switch module can monitor the opening state of the cabinet door of the cabinet 2. When it detects that the cabinet door of the cabinet 2 is opened, it can disconnect the power supply loop of the power control unit, that is, cut off the system power supply to ensure the safety of the operator.
[0084] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present application are programs or code segments for performing the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted via a data signal carried in a carrier wave over a transmission medium or a communication link. "Machine-readable medium" can include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.
[0085] It should be noted that, in this article, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.
[0086] In this article, specific examples are used to elaborate on the principles and implementation manners of the present application. The description of the above examples is only for helping to understand the method and its core idea of the present application. The above is only the preferred implementation manner of the present application. It should be pointed out that due to the limitation of literal expression and objectively there are infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the present application to other occasions without improvement, shall all be regarded as the protection scope of the present application.
Claims
1. A BMS simulation test circuit, characterized in that: The BMS simulation test circuit comprises: Real-time simulation system, used to connect with the host computer to obtain the battery simulation model; A BMS dedicated simulation module, connected to the real-time simulation system, for generating a BMS simulation signal based on the battery simulation model; A BMS integrated module, comprising a main module interface and at least two battery simulation modules, wherein the main module interface is connected to the BMS dedicated simulation module, and the battery simulation module is connected to the real-time simulation system; The main module interface is used to connect to the BCU of the BMS under test; the battery simulation module is used to connect to the corresponding BMU in the BMS under test through the sampling line, and generate battery simulation parameters based on the battery simulation model; wherein the BMU is arranged close to the battery simulation module; The real-time simulation system comprises: A real-time simulation machine, used for running the battery simulation model; An input / output subsystem, connected to the real-time simulator via a PCIe bus, for providing an input / output interface or a communication control interface connected to the BMS dedicated simulation module and the BMS integrated module; The BMS dedicated simulation module includes at least one of a high voltage simulation module, an insulation resistance and capacitance simulation module, a temperature simulation module or a charging pile simulation module.
2. The BMS simulation test circuit according to claim 1, characterized in that: The BMS dedicated simulation module also includes: A high-voltage programmable power supply is connected between the main module interface and the real-time simulation system, and is used to generate a simulated high-voltage signal and / or a pre-charge current signal based on the battery simulation model.
3. The BMS simulation test circuit according to claim 2, characterized in that: The high-voltage simulation module, insulation resistance and capacitance simulation module, temperature simulation module or charging pile simulation module is connected to the input-output subsystem via a PCIe bus, the high-voltage programmable power supply is connected to the input-output subsystem via a CAN bus, and the battery simulation module is connected to the input-output subsystem via a PCIe bus.
4. The BMS simulation test circuit according to claim 1, characterized in that: The main module interface is connected to the input and output subsystem via an IO bus; The real-time simulator is used to provide simulation test signals to the BCU through the input-output subsystem and the main module interface.
5. The BMS simulation test circuit according to claim 1, characterized in that: The BMS simulation test circuit also includes: A fault simulation unit, connected between the main module interface and the input / output subsystem, for generating a first fault simulation signal based on a fault test signal sent by the real-time simulator; The battery simulation module further includes a fault injection circuit, which is used to generate a second fault simulation signal based on a fault test signal sent by the real-time simulator.
6. A BMS simulation test device, characterized in that: The BMS simulation test device comprises: Cabinets; The BMS simulation test circuit according to any one of claims 1 to 5, wherein the BMS simulation test circuit is arranged in the cabinet; The cabinet is also used to place the BMS under test, so that the BMS simulation test circuit performs a BMS simulation test on the BMS under test.
7. The BMS simulation test device according to claim 6, characterized in that: Each BMU of the tested BMS is respectively arranged at the same layer as the battery simulation module of the correspondingly connected BMS simulation test circuit.
8. The BMS simulation test device according to claim 6, characterized in that: The BMS simulation test device also includes: The proximity switch module is connected to the power control unit of the cabinet and is used to disconnect the power supply circuit of the power control unit when it is detected that the cabinet door of the cabinet is opened.