Battery wireless testing system, method, high-voltage testing device and low-voltage testing device

Abstract

The present application provides a battery wireless testing system, method, high-voltage testing device, and low-voltage testing device, belonging to the field of battery technology. The system includes a high-voltage testing device and a low-voltage testing device. The high-voltage testing device is used to connect to the first port of the battery to be tested by wired communication, and the high-voltage testing device includes a first wireless communication module, and the first wireless communication module is used to connect to the test terminal by wireless communication; the low-voltage testing device is set separately from the high-voltage testing device, and the low-voltage testing device is used to connect to the second port of the battery to be tested by wired communication, and the low-voltage testing device includes a second wireless communication module, and the second wireless communication module is used to connect to the test terminal by wireless communication, and the first wireless communication module is also connected to the second wireless communication module by wireless communication. The present application can advance high-voltage testing and low-voltage testing, thereby improving testing efficiency.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery wireless testing system, method, high-voltage testing device, and low-voltage testing device. Background Art

[0002] To ensure that battery performance meets design requirements, they must undergo rigorous testing. End of Line (EOL) testing refers to quality control and performance verification testing performed at the final stage of battery production, and is a crucial step in the battery production process.

[0003] However, the EOL test cycle of batteries in related technologies is long and the test efficiency is low. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the background art. To this end, one purpose of the present application is to provide a battery wireless testing system, method, high-voltage testing device and low-voltage testing device to improve the problem of low battery testing efficiency in the related art.

[0005] An embodiment of the first aspect of the present application provides a battery wireless testing system, comprising: a high-voltage testing device and a low-voltage testing device, the high-voltage testing device being used to be connected to a first port of a battery to be tested by wired communication, and the high-voltage testing device comprising a first wireless communication module, the first wireless communication module being used to be connected to a test terminal by wireless communication, so as to transmit the high-voltage test data of the battery to be tested measured by the high-voltage testing device to the test terminal; the low-voltage testing device being separately arranged from the high-voltage testing device, and the low-voltage testing device being used to be connected to a second port of the battery to be tested by wired communication, the low-voltage testing device comprising a second wireless communication module, the second wireless communication module being used to be connected to the test terminal by wireless communication, so as to transmit the low-voltage test data of the battery to be tested measured by the low-voltage testing device to the test terminal, and the first wireless communication module being also connected to the second wireless communication module by wireless communication; the first wireless communication module being used to obtain a first test instruction issued by the test terminal through the second wireless communication module; and / or the second wireless communication module being used to obtain a second test instruction issued by the test terminal through the first wireless communication module.

[0006] In this embodiment, since the high-voltage test device and the low-voltage test device are separately provided and each has a wireless communication function, the high-voltage test device and the low-voltage test device can be separated from the test cabinet, and the high-voltage test and the low-voltage test can be advanced, and the high-voltage test and the low-voltage test can be performed simultaneously when the battery undergoes other processes, thereby reducing the residence time of the battery at the test station and improving the test cycle and test efficiency. In addition, since the high-voltage test device and the low-voltage test device are separately provided, the high-voltage test device and the low-voltage test device can be tested in parallel without having to complete the high-voltage test and the low-voltage test in sequence, further improving the test cycle and test efficiency. In this embodiment, through the mutual communication between the first wireless communication module and the second wireless communication module, some test items that require the high-voltage test device and the low-voltage test device to cooperate with each other can be completed, and the master-slave control method can improve scalability, reduce the complexity of communication, optimize the network structure, and improve maintainability.

[0007] In some embodiments, the high-voltage testing device also includes: a first relay module, the first end of the first relay module is electrically connected to the first wireless communication module, the second end of the first relay module is electrically connected to the first end of at least one first resistor, and the second end of at least one first resistor is electrically connected to the first port, and the first relay module is used to connect the at least one first resistor to the battery to be tested.

[0008] By connecting the first resistor to the measurement loop, since the resistance value of the first resistor is fixed, the accuracy of the test result can be improved by measuring the voltage across the first resistor.

[0009] In some embodiments, the high-voltage testing device also includes: a first voltage measuring module, the first end of the first voltage measuring module is electrically connected to the first wireless communication module, the second end of the first voltage measuring module is electrically connected to the first port, and the first voltage measuring module is used to measure the voltage of the first port.

[0010] In this embodiment, by embedding the first voltage measurement module in the high-voltage test device, device stacking and operation complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0011] In some embodiments, the high-voltage testing device also includes: a first signal conversion module, the first end of the first voltage measurement module is electrically connected to the first wireless communication module through the first signal conversion module, and the first signal conversion module is used to perform signal conversion on the data transmitted between the first voltage measurement module and the first wireless communication module to realize communication between the first voltage measurement module and the first wireless communication module.

[0012] In this embodiment, signal transmission between the first voltage measurement module and the first wireless communication module can be achieved through the first signal conversion module, which is conducive to directly using the high-voltage test device to perform voltage measurement.

[0013] In some embodiments, at least one first voltage measurement circuit is provided between the second end of the first voltage measurement module and the first port, and the at least one first voltage measurement circuit is used to electrically connect to at least one high-voltage port to be tested of the battery to be tested through the first port in a one-to-one correspondence; alternatively, the battery wireless testing system includes at least one high-voltage testing device, and the first voltage measurement modules in the at least one high-voltage testing device are respectively used to electrically connect to at least one high-voltage port to be tested of the battery to be tested through the first port in a one-to-one correspondence.

[0014] The above embodiment provides multiple first voltage test circuits or multiple high-voltage test devices, so as to measure multiple high-voltage ports to be tested of the battery to be tested, and has high test coverage.

[0015] In some embodiments, the low-voltage testing device further includes: a second relay module, a first end of the second relay module is electrically connected to the second wireless communication module, a second end of the second relay module is electrically connected to the second port, and the second relay module is used to control the power supply status of the BMU in the battery to be tested.

[0016] In this embodiment, the second relay module can realize power on and off of each circuit in the BMU, thereby completing different test items and improving the test coverage.

[0017] In some embodiments, the third end of the second relay module is also electrically connected to the first end of at least one second resistor, and the second end of at least one second resistor is electrically connected to the second port, and the second relay module is used to connect the at least one second resistor to the battery to be tested.

[0018] By connecting the second resistor to the measurement loop, since the resistance value of the second resistor is fixed, the accuracy of the test result can be improved by measuring the voltage across the second resistor.

[0019] In some embodiments, the low voltage testing device also includes: a second voltage measuring module, the first end of the second voltage measuring module is electrically connected to the second wireless communication module, the second end of the second voltage measuring module is electrically connected to the second port, and the second voltage measuring module is used to measure the voltage of the second port.

[0020] In this embodiment, by embedding the second voltage measurement module in the low-voltage test device, device stacking and operation complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0021] In some embodiments, the low voltage testing device further includes: a resistance measuring module, a first end of the resistance measuring module is electrically connected to the second wireless communication module, a second end of the resistance measuring module is electrically connected to the second port, and the resistance measuring module is used to detect the resistance of the second port.

[0022] In this embodiment, by integrating a resistance measurement module into the low-voltage test device, device stacking and operation complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0023] In some embodiments, the low-voltage testing device also includes: a second signal conversion module, the first end of the second voltage measurement module is electrically connected to the second wireless communication module through the second signal conversion module, and the second signal conversion module is used to perform signal conversion on the data transmitted between the second voltage measurement module and the second wireless communication module to realize communication between the second voltage measurement module and the second wireless communication module; the first end of the resistance measurement module is electrically connected to the second wireless communication module through the second signal conversion module, and the second signal conversion module is also used to perform signal conversion on the data transmitted between the resistance measurement module and the second wireless communication module to realize communication between the resistance measurement module and the second wireless communication module.

[0024] In this embodiment, the second signal conversion module can realize signal transmission between the second voltage measurement module and the first wireless communication module, and between the resistance measurement module and the second wireless communication module, which is conducive to directly using the low-voltage test device to perform voltage and resistance measurements.

[0025] In some embodiments, the low voltage testing device further includes: a test communication module, a first end of the test communication module is electrically connected to the second wireless communication module, a second end of the test communication module is electrically connected to the second port, and the test communication module is used to test the communication function of the battery to be tested.

[0026] In this embodiment, the low-voltage communication function of the battery to be tested can be tested by testing the communication module to check whether it meets the design requirements.

[0027] An embodiment of the second aspect of the present application provides a battery wireless testing method, which is used for a high-voltage testing device in a battery wireless testing system in any of the above embodiments; the method includes: obtaining a first test instruction through a first wireless communication module; controlling the battery to be tested to perform a first high-voltage test based on the first test instruction, and obtaining first test data of the first high-voltage test; and sending the first test data to a test terminal through the first wireless communication module.

[0028] In this embodiment, the high-voltage test device can communicate with the test terminal to obtain test instructions and send test results, which is conducive to the reliable implementation of high-voltage testing.

[0029] In some embodiments, the first test instruction is a test instruction sent by the test terminal to the first wireless communication module; or, the first test instruction is a test instruction sent by the test terminal to the second wireless communication module of the low-voltage test device and forwarded by the second wireless communication module to the first wireless communication module.

[0030] The method provided in this embodiment can realize communication between a high-voltage test device and a test terminal. Direct communication can improve communication efficiency, while indirect communication can improve scalability, reduce communication complexity, optimize network structure, and improve maintainability.

[0031] An embodiment of the third aspect of the present application provides a battery wireless testing method, which is used for a low-voltage testing device in any of the above-mentioned battery wireless testing systems; the method includes: obtaining a second test instruction through a second wireless communication module; controlling the battery to be tested to perform a first low-voltage test based on the second test instruction, and obtaining second test data of the first low-voltage test; and sending the second test data to a test terminal through the second wireless communication module.

[0032] In this embodiment, the low-voltage test device can communicate with the test terminal to obtain test instructions and send test results, which is conducive to the reliable implementation of the low-voltage test.

[0033] In some embodiments, the second test instruction is a test instruction sent by the test terminal to the second wireless communication module; or, the second test instruction is a test instruction sent by the test terminal to the first wireless communication module of the high-voltage testing device and forwarded by the first wireless communication module to the second wireless communication module.

[0034] The method provided in this embodiment can realize communication between the low-voltage test device and the test terminal. It can improve communication efficiency through direct communication and improve scalability through indirect communication. It can also reduce the complexity of communication, optimize the network structure, and improve maintainability.

[0035] An embodiment of the fourth aspect of the present application provides a high-voltage testing device, which is a high-voltage testing device in a battery wireless testing system in any of the above embodiments; the high-voltage testing device includes: a first control module, used to obtain a first test instruction through a first wireless communication module; based on the first test instruction, controlling the battery to be tested to perform a first high-voltage test, and obtaining first test data of the first high-voltage test; and sending the first test data to a test terminal through the first wireless communication module.

[0036] An embodiment of the fifth aspect of the present application provides a low-voltage testing device, which is a low-voltage testing device in the battery wireless testing system in any of the above embodiments; the low-voltage testing device includes: a second control module, used to obtain a second test instruction through a second wireless communication module; based on the second test instruction, controlling the battery to be tested to perform a first low-voltage test, and obtaining second test data of the first low-voltage test; and sending the second test data to the test terminal through the second wireless communication module.

[0037] An embodiment of the sixth aspect of the present application provides a computing device, comprising: at least one processor; and at least one memory communicatively connected to the at least one processor, wherein the at least one memory stores instructions, which, when executed individually or collectively by the at least one processor, enable the computing device to execute the battery wireless testing method in the above embodiment.

[0038] An embodiment of the seventh aspect of the present application provides a computer-readable storage medium storing instructions, which, when executed individually or collectively by one or more processors of a computing device, enable the computing device to execute the battery wireless testing method in the above embodiment.

[0039] An embodiment of the eighth aspect of the present application provides a computer program product, comprising instructions, which, when executed individually or collectively by one or more processors of a computing device, enable the computing device to execute the battery wireless testing method in the above embodiment.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0042] Figure 1 A schematic diagram of the structure of a battery wireless testing system provided in some embodiments of the present application;

[0043] Figure 2 An application flow chart of a battery wireless testing system provided in some embodiments of the present application;

[0044] Figure 3 for Figure 1 Schematic diagram of the structure of the medium and high voltage test device;

[0045] Figure 4 for Figure 1 Schematic diagram of the structure of the medium and low voltage test device;

[0046] Figure 5 A flowchart of a battery wireless testing method provided in some embodiments of the present application;

[0047] Figure 6 A flowchart of a battery wireless testing method provided in some other embodiments of the present application;

[0048] Figure 7 Schematic diagram of a high-voltage testing device provided in some other embodiments of the present application;

[0049] Figure 8 Schematic diagram of a low supply voltage testing device according to some other embodiments of the present application;

[0050] Figure 9 A schematic diagram of a computing device for implementing a wireless battery testing method provided in some embodiments of the present application.

[0051] Description of reference numerals:

[0052] High voltage testing device 100, first wireless communication module 110, first relay module 120, first resistor 130, first voltage measuring module 140, first signal conversion module 150, first voltage measuring circuit 160, first control module 170;

[0053] Low voltage testing device 200, second wireless communication module 210, second relay module 220, second resistor 230, second voltage measurement module 240, resistance measurement module 250, second signal conversion module 260, power supply line 270, test communication module 280, second control module 290;

[0054] A battery to be tested 300, a first port 310, and a second port 320;

[0055] Test terminal 400. DETAILED DESCRIPTION

[0056] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0058] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0059] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0060] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0061] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0062] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0063] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0064] To ensure that the battery's performance meets the design requirements, it needs to be rigorously tested. End-of-line (EOL) testing refers to quality control and performance verification testing performed at the final stage of battery production, and is an important step in the battery production process.

[0065] In related technologies, battery EOL testing is typically performed using a test cabinet that integrates the equipment required for various battery tests. For high-voltage testing (such as high-voltage sampling and relay function testing) and low-voltage testing (such as CAN (Controller Area Network) communication and SOC (State of Charge) calibration) in battery EOL testing, an integrated high- and low-voltage testing architecture is typically used. This means the test cabinet is equipped with both high-voltage and low-voltage testing equipment, which are integrated within the cabinet and tested via a wired connection between the test cabinet and the battery. Of course, the test cabinet also integrates the equipment required for other tests.

[0066] However, in order to meet the electrical isolation requirements of high and low voltage tests, electrical isolation configuration is required when integrating high-voltage test equipment and low-voltage test equipment in a test cabinet, resulting in a large test cabinet (typical size ≥800mm×600mm×1800mm), which is difficult to deploy flexibly, resulting in problems such as space occupation and deployment rigidity. Therefore, the battery in the related technology can only be tested for EOL at a fixed workstation, which means that the battery needs to remain stationary at the test station for a long time for various tests, resulting in a long test cycle and low test efficiency.

[0067] In addition, in the related art, since the high-voltage test equipment and the low-voltage test equipment are integrated in the test cabinet and share some equipment, the high-voltage and low-voltage test hardware are coupled.

[0068] Furthermore, due to the hardware coupling between high- and low-voltage tests, high- and low-voltage tests must be performed sequentially, preventing the high-voltage test from being used to parallelize the low-voltage test. This results in insufficient equipment utilization, inefficient resource scheduling, and long test cycles, leading to low test efficiency. Furthermore, as battery production capacity evolves toward CTP (cell-to-pack) / CTC (cell-to-chassis) integrated manufacturing models, the serialization flaws in the relevant test processes have become a key bottleneck restricting production line cycle times.

[0069] In order to solve at least one of the above problems, an embodiment of the present application provides a battery wireless testing system, method, high-voltage testing device and low-voltage testing device, the system including: a high-voltage testing device and a low-voltage testing device; the high-voltage testing device is used to be connected to the first port of the battery to be tested by wired communication, and the high-voltage testing device includes a first wireless communication module, the first wireless communication module is used to be connected to the test terminal by wireless communication to transmit the high-voltage test data of the battery to be tested measured by the high-voltage testing device to the test terminal; the low-voltage testing device is separately arranged from the high-voltage testing device, and the low-voltage testing device is used to be connected to the second port of the battery to be tested by wired communication, the low-voltage testing device includes a second wireless communication module, the second wireless communication module is used to be connected to the test terminal by wireless communication to transmit the low-voltage test data of the battery to be tested measured by the low-voltage testing device to the test terminal, and the first wireless communication module is also connected to the second wireless communication module by wireless communication; the first wireless communication module is used to obtain a first test instruction issued by the test terminal through the second wireless communication module; and / or the second wireless communication module is used to obtain a second test instruction issued by the test terminal through the first wireless communication module.

[0070] Since the high-voltage test device and the low-voltage test device are separately provided and each has a wireless communication function, the high-voltage test device and the low-voltage test device can be separated from the test cabinet, and the high-voltage test and the low-voltage test can be advanced, and the high-voltage test and the low-voltage test can be performed simultaneously when the battery undergoes other processes, thereby reducing the residence time of the battery at the test station and improving the test cycle and test efficiency. In addition, since the high-voltage test device and the low-voltage test device are separately provided, the high-voltage test device and the low-voltage test device can be tested in parallel without having to complete the high-voltage test and the low-voltage test in sequence, further improving the test cycle and test efficiency. Through the mutual communication between the first wireless communication module and the second wireless communication module, some test items that require the high-voltage test device and the low-voltage test device to cooperate with each other can be completed, and the master-slave control method can improve scalability, reduce the complexity of communication, optimize the network structure, and improve maintainability.

[0071] The wireless battery testing system provided in the embodiments of the present application can perform high and low voltage testing on batteries. The batteries involved can include, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc. In addition, the batteries involved in the embodiments of the present application can be batteries used in electric vehicles, or they can be batteries used in other electrical devices or energy storage devices.

[0072] The energy storage device in the embodiments of the present application may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple batteries connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0073] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output electrical energy at the appropriate time. For example, energy storage devices can store electrical energy during low-consumption periods and provide electrical energy to relevant users or electrical equipment during peak periods. The energy storage system provided in the embodiments of the present application can be any power system that requires an energy storage device. As an example, the energy storage device is an energy storage container or an energy storage cabinet.

[0074] The electrical devices in the embodiments of the present application may be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. The electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. The spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0075] It should be understood that the battery involved in the embodiments of the present application is not limited to being applicable to the energy storage devices and electrical equipment described above, but can also be applicable to all battery devices including a box and electrical equipment using the battery device.

[0076] For ease of explanation, the battery wireless testing method provided in this embodiment is described below in conjunction with the scenario of calendar life test. The same applies to other testing scenarios and will not be described in detail.

[0077] Figure 1 This is a schematic diagram of the structure of a battery wireless testing system provided in some embodiments of the present application. Figure 2 This is an application flowchart of a battery wireless testing system provided in some embodiments of the present application.

[0078] Please refer to Figures 1 to 2The embodiment of the present application provides a battery wireless testing system, including: a high-voltage testing device 100 and a low-voltage testing device 200. The high-voltage testing device 100 is used to communicate with the first port 310 of the battery 300 to be tested by wired communication, and the high-voltage testing device 100 includes a first wireless communication module 110, and the first wireless communication module 110 is used to wirelessly connect to the test terminal 400 to transmit the high-voltage test data of the battery 300 to be tested measured by the high-voltage testing device 100 to the test terminal 400; the low-voltage testing device 200 is separately provided from the high-voltage testing device 100, and the low-voltage testing device 200 is used to communicate with the second port 320 of the battery 300 to be tested by wired communication, and the low-voltage testing device 200 includes a second wireless communication module 310, and the second wireless communication module 210 is used to wirelessly connect to the test terminal 400 to transmit the low-voltage test data of the battery 300 to be tested measured by the low-voltage testing device 200 to the test terminal 400. The first wireless communication module 110 is also wirelessly connected to the second wireless communication module 210; the first wireless communication module 110 is used to obtain the first test instruction issued by the test terminal 400 through the second wireless communication module 210; and / or, the second wireless communication module 210 is used to obtain the second test instruction issued by the test terminal 400 through the first wireless communication module 110.

[0079] The wireless battery testing system provided in this embodiment can be used to perform at least partial EOL testing of the battery under test. It is understood that EOL testing is performed after the battery pack is assembled and before shipment, and aims to ensure that the product meets design standards and safety regulations through multi-dimensional electrical performance testing and functional verification. The wireless battery testing system can be used to perform high and low voltage testing during EOL testing. Functionally, it can include safety testing, instrumentation testing, and communication testing. Voltage testing levels include high-voltage testing and low-voltage testing.

[0080] The battery under test 300 may be a battery that requires EOL testing. It is understood that the battery under test 300 may possess complete electrical functionality, thereby enabling the relevant test items of the EOL test. However, this embodiment does not specifically limit the structural integrity of the battery under test 300. For example, the battery under test 300 may be a fully assembled battery, or it may be an unassembled battery, for example, without non-functional components such as a battery cover. Since non-functional components, while affecting the structural integrity of the battery, do not affect the battery's functionality, EOL testing can be performed.

[0081] The wireless battery testing system provided in this embodiment can perform both high-voltage and low-voltage tests on the battery 300 under test. High-voltage testing can include tests such as high-voltage sampling and relay function testing, while low-voltage testing can include tests such as CAN communication and SOC calibration. CAN communication testing is a type of low-voltage battery communication test, primarily used to verify that the CAN bus communication functionality of the BMU (Battery Management Unit) meets design requirements.

[0082] The system provided in this embodiment may include a high voltage test device 100 and a low voltage test device 200. The high voltage test device 100 can perform high voltage testing, and the low voltage test device 200 can perform low voltage testing.

[0083] It can be understood that the battery 300 to be tested can have a first port 310 and a second port 320. The first port 310 can be used to output a high-voltage signal, and the second port 320 can be used to output a low-voltage signal. The first port 310 and the second port 320 can be external interfaces of the battery itself, or they can be test interfaces specially set for testing, and can be set according to actual conditions. In addition, the first port 310 is a general term for the interfaces that the high-voltage test device 100 needs to connect to, and does not refer to a physical interface. It can include one or more interfaces with different functions. These interfaces can be integrated into a large interface or multiple independent interfaces, and can be set according to actual conditions. The second port 320 is a general term for the interfaces that the low-voltage test device 200 needs to connect to, and does not refer to a physical interface. It can include one or more interfaces with different functions. These interfaces can be integrated into a large interface or multiple independent interfaces, and can be set according to actual conditions. In one embodiment, the first port can be the high-voltage output port of the battery, and the second port can be the low-voltage output port of the battery.

[0084] The high voltage test device 100 can be connected to the first port 310 in a wired manner. For example, the high voltage test device 100 can be connected to the first port 310 in a wired manner such as a cable. Furthermore, the high voltage test device 100 can be quickly connected to the first port 310 through a plug-in terminal.

[0085] In addition, the high-voltage test device 100 may be provided with a first wireless communication module 110. The first wireless communication module may be a structure capable of wireless communication, wherein the wireless communication method may be various wireless communication methods such as WIFI (Wireless Fidelity, wireless local area network), Bluetooth, 5G, etc. The first wireless communication module 110 can wirelessly communicate with the test terminal 400. The test terminal 400 can be a terminal device such as a host computer that issues test instructions and processes data. When the high-voltage test device 100 is connected to the battery under test, the measured high-voltage test data can be uploaded to the test terminal 400 via the first wireless communication module 110, so that the test terminal 400 can analyze the test results based on the high-voltage test data. It is understood that the communication between the first wireless communication module 110 and the test terminal 400 can be direct or indirect. For example, the high-voltage test data can be sent directly from the first wireless communication module 110 to the test terminal 400 or forwarded to the test terminal 400 by another device.

[0086] The low voltage test device 200 can be connected to the second port 320 in a wired manner. For example, the low voltage test device 200 can be connected to the second port 320 in a wired manner such as a cable. Further, the low voltage test device 200 can be quickly connected to the second port 320 through a plug-in terminal.

[0087] In addition, the low-voltage test device 200 may be provided with a second wireless communication module 210. The second wireless communication module may be a structure capable of wireless communication, wherein the wireless communication method may be various wireless communication methods such as WIFI (Wireless Fidelity, wireless local area network), Bluetooth, 5G, etc. The second wireless communication module 210 can communicate wirelessly with the test terminal 400. When the low-voltage test device 200 is connected to the battery to be tested, the low-voltage test data measured by it can be uploaded to the test terminal 400 via the second wireless communication module 210, so that the test terminal 400 can analyze the test results based on the low-voltage test data. It is understood that the communication between the second wireless communication module 210 and the test terminal 400 can be direct communication or indirect communication. For example, the low-voltage test data can be sent directly to the test terminal 400 by the second wireless communication module 210, or it can be forwarded to the test terminal 400 by other devices.

[0088] In this embodiment, the high-voltage test device 100 and the low-voltage test device 200 are separately provided, that is, they are physically separated from each other and can each be an independent device, so that they can be independently installed and tested accordingly.

[0089] In some embodiments, when a high-voltage test is required, the test terminal 400 can generate a first test instruction corresponding to the high-voltage test item, and then the test terminal 400 can directly send the first test instruction to the first wireless communication module 110. After receiving the first test instruction, the high-voltage test device 100 can control the battery under test to perform the high-voltage test corresponding to the first test instruction and obtain first test data of the high-voltage test. In addition, the high-voltage test device 100 can directly send the first test data to the test terminal 400 via the first wireless communication module 110.

[0090] When a low-voltage test is required, the test terminal 400 can generate a second test instruction corresponding to the low-voltage test item. The test terminal 400 can then directly send the second test instruction to the second wireless communication module 210. After receiving the second test instruction, the low-voltage test device 200 can control the battery under test to perform the low-voltage test corresponding to the second test instruction and obtain second test data of the low-voltage test. In addition, the low-voltage test device 200 can directly send the second test data to the test terminal 400 via the second wireless communication module 210.

[0091] In this embodiment, since the high-voltage test device 100 and the low-voltage test device 200 are separately arranged, the two can be connected to the battery to be tested as an independent device respectively, so that the high-voltage test and the low-voltage test can be separated from the test cabinet, that is, there is no need to perform high and low voltage tests at the test station where the test cabinet is located, so that the high and low voltage tests can be advanced, which will be explained in conjunction with the accompanying drawings below.

[0092] Please refer to Figure 2 In a specific testing process flow, steps S501 to S506 may be included.

[0093] Step S501: Installing the battery wireless test system. After the battery to be tested is installed at the previous high-voltage station, the high-voltage test device and the low-voltage wireless test device can be installed on the battery to be tested. This step can be completed manually or automatically.

[0094] In step S502, after the test terminal 400 detects that the battery wireless test system has been installed, it initiates the wireless test program and performs high-voltage and low-voltage tests. As can be appreciated, since the high-voltage and low-voltage test devices are separate units, they can each perform independent test items. Of course, they can also be controlled collaboratively to perform complex test items. As can be appreciated, after initiating the wireless test, the high-voltage and low-voltage test devices can flow sequentially along with the batteries under test to the remaining processes (processes 1 through 3) for processing. Simultaneously, the high-voltage and low-voltage test devices complete a portion of the EOL testing (high-voltage and low-voltage tests) without affecting other processes.

[0095] In some embodiments, steps 1 to 3 may include installing the upper cover of the battery to be tested, installing the screws for the upper cover, and the like.

[0096] Step S503: After the wireless test is completed, the high-voltage test device and the low-voltage test device can wirelessly transmit the high-voltage and low-voltage test results to the test terminal 400 through their respective wireless communication modules for judgment and result upload.

[0097] Meanwhile, after the wireless test is completed, the high-voltage test device 100 and the low-voltage test device 200 can be disassembled, and the battery to be tested can be further transported to the test station for EOL testing.

[0098] In step S504, the battery to be tested arrives at the test station, and the remaining EOL tests can then be performed. Specifically, the remaining EOL test items can be tested after the high-voltage and low-voltage tests are removed. Since the high-voltage and low-voltage tests have been completed previously, the EOL test time at the test station can be greatly reduced, improving testing efficiency and thus improving the manufacturing efficiency of the production line. After the test in step S504 is completed, the battery can be transported to the next station for inspection in step S505.

[0099] In step S505 , a DCR (DC Resistance) test and a helium test may be performed.

[0100] In step S506 , it is understood that after the wireless test is completed, the disassembled high-voltage test device and the low-voltage test device can be returned to step S501 to repeat the wireless test of the next battery to be tested.

[0101] As can be understood, in this embodiment, since the high-voltage and low-voltage test devices are not integrated into the test cabinet but are instead separately installed, the battery wireless testing system is simplified, enabling miniaturization of wireless testing. Furthermore, since wireless communication modules are built into each of the high-voltage and low-voltage test devices, wireless high-voltage and low-voltage testing can be achieved. Miniaturization and wireless integration overcome spatial constraints and enable flexible deployment. Specifically, the battery wireless testing system can perform high- and low-voltage testing concurrently without interfering with normal manufacturing or battery transport at other stations. This allows at least some test items (high-voltage and low-voltage testing) to be performed at a test station in parallel, reducing the number of test items at each station and improving testing efficiency. Furthermore, since the high-voltage and low-voltage test devices are separated from the test cabinet, the test cabinet's volume can also be reduced.

[0102] Furthermore, in related art high- and low-voltage tests, high-voltage sampling must be performed first, followed by low-voltage CAN communication testing, resulting in a long battery test cycle. This embodiment, by separating the high- and low-voltage test components, improves hardware coupling, overcomes the serial interlocking of high- and low-voltage tests, restructures the test flow, and enables parallel execution of high- and low-voltage tests. This allows for rational resource allocation and improved resource utilization, shortens test cycles, and improves test efficiency. Verified tests have shown that test cycles can be shortened by over 20%.

[0103] Furthermore, unlike test cabinets in related art that require long wiring harnesses, this embodiment achieves wireless communication through first and second wireless communication modules, eliminating wiring harness dependency and replacing over 90% of physical cables. Furthermore, because the high-voltage and low-voltage test devices are separate, both can be connected to different interfaces of the battery under test via shorter wiring harnesses, further reducing wiring harness length compared to test cabinets in related art.

[0104] In some embodiments, the high voltage testing device 100 and the low voltage testing device 200 may be respectively equipped with power supply batteries to supply power to various components.

[0105] Continue to refer to Figure 1 The first wireless communication module 110 can also be wirelessly connected to the second wireless communication module 210, thereby achieving coordinated control of the two. In this embodiment, the first test instruction represents a test instruction for a certain test item of the high-voltage test, and the second test instruction represents a test instruction for a certain test item of the low-voltage test.

[0106] In some embodiments, the high-voltage test device 100 can serve as a master test control device, and the low-voltage test device 200 can serve as a slave test control device. The low-voltage test device 200 can communicate with the test terminal via the high-voltage test device 100. For example, a first test instruction can be sent directly from the test terminal to the first wireless communication module 110 and directly received by the high-voltage test device 100, thereby directly performing a high-voltage test. The high-voltage test results can also be directly sent to the test terminal 400 via the first wireless communication module 110.

[0107] The second test instruction can be sent by the test terminal 400 to the first wireless communication module 110, so that it is first received by the high-voltage test device. Then, the high-voltage test device 100 can forward the second test instruction to the second wireless communication module 210 through the first wireless communication module 110, so that it is received by the low-voltage test device 200, and then a low-voltage test is performed. The result of the low-voltage test can be sent directly to the test terminal 400, or it can also be forwarded by the high-voltage test device.

[0108] In some embodiments, the high-voltage test device 100 can serve as a slave test control device, and the low-voltage test device 200 can serve as a master test control device. The high-voltage test device 100 can communicate with the test terminal via the low-voltage test device 200. For example, a second test instruction can be sent directly from the test terminal to the second wireless communication module 210 and directly received by the low-voltage test device 200, thereby directly performing a low-voltage test. The low-voltage test results can also be directly sent to the test terminal 400 via the second wireless communication module 210.

[0109] The first test instruction can be sent by the test terminal 400 to the second wireless communication module 210, so that it is first received by the low-voltage test device, and then the low-voltage test device 200 can forward the first test instruction to the first wireless communication module 110 through the second wireless communication module 210, so that it is received by the high-voltage test device 100, and then a high-voltage test is performed. The result of the high-voltage test can be sent directly to the test terminal 400, or it can also be forwarded by the low-voltage test device.

[0110] It can be understood that in high and low voltage tests, some test items can be completed independently by high voltage test devices, and some test items can be completed independently by low voltage test devices. These two parts of the test can be tested in parallel. Of course, there are also some test items that require the coordinated control of high voltage test devices and low voltage test devices to complete, such as high voltage sampling tests.

[0111] The following describes the high-voltage sampling test using the high-voltage test device 100 as a slave test control device and the low-voltage test device 200 as a master test control device as an example. It can be understood that, for the safety of the high voltage, part of the high-voltage circuit will be controlled through the low-voltage circuit. When performing a high-voltage sampling test, the test terminal can send the test instruction to the low-voltage test device, and the low-voltage test device can control the low-voltage circuit to close the relay in the high-voltage circuit. When the relay is closed, the high-voltage circuit is turned on. At this time, the low-voltage test device can send the relay closure information and the high-voltage test instruction to the high-voltage test device, so that the high-voltage test device can perform high-voltage sampling. The test data of the high-voltage sampling can be directly sent from the high-voltage test device to the test terminal.

[0112] In addition, in other embodiments, the first wireless communication module 110 can obtain the first test instruction issued by the test terminal 400 through the second wireless communication module 210; and the second wireless communication module 210 can obtain the second test instruction issued by the test terminal 400 through the first wireless communication module 110, that is, the master-slave control device can be switched according to the load conditions of the high-voltage test device and the low-voltage test device.

[0113] In this embodiment, through the communication between the first wireless communication module and the second wireless communication module, some test items that require the high-voltage test device and the low-voltage test device to cooperate with each other can be completed. In addition, the master-slave control method can improve scalability, reduce the complexity of communication, optimize the network structure, and improve maintainability.

[0114] Figure 3 for Figure 1 Schematic diagram of the structure of the medium and high voltage test device; please refer to Figure 1 and Figure 3 The high-voltage testing device 100 further includes: a first relay module 120, wherein a first end of the first relay module 120 is electrically connected to the first wireless communication module 110, a second end of the first relay module 120 is electrically connected to a first end of at least one first resistor 130, and a second end of the at least one first resistor 130 is electrically connected to the first port 310, and the first relay module 120 is used to connect the at least one first resistor 130 to the battery to be tested 300.

[0115] In this embodiment, the high-voltage testing device 100 also includes a first relay module 120. The first end of the first relay module 120 can be electrically connected to the first wireless communication module 110, so that communication between the two can be achieved. For example, the opening and closing of the first relay module 120 can be controlled according to the test instructions received by the first wireless communication module, or the test data related to the first relay module 120 can be sent to the test terminal 400 through the first wireless communication module, etc.

[0116] The second end of the first relay module 120 can be electrically connected to the first port 310 via at least one first resistor 130. The first resistor 130 can be a common resistor structure, which can be a fixed value resistor. The unit of the first resistor 130 can be ohm, and the resistance can be between 0.5M and 2M, for example, 0.5M, 0.6M, 0.8M, 1M, 1.2M, 1.4M, 1.6M, 1.8M, 2M, etc.

[0117] It is understood that the high-voltage testing device may be provided with at least one first resistor 130, with a first end of each first resistor 130 connected to the second end of the first relay module 120, and a second end of each first resistor 130 connected to the first port. When multiple first resistors 130 are provided, the multiple first resistors 130 may be connected in parallel between the first relay module 120 and the first port 310.

[0118] In this embodiment, the first relay module 120 can be composed of at least one switching circuit, which can be used to connect one or more first resistors 130 to the first port, thereby connecting the first resistors to the battery under test 300, thereby allowing the first resistors to be connected to the test circuit. It will be understood that in this embodiment, the first resistor and the battery under test 300 can be connected in series, and of course, the two can also be connected in parallel.

[0119] It is understood that the first and second ends of the first relay module 120 described above refer to interfaces of different types or functions of the first relay module 120, and each end may also be provided with one or more sub-ports, which can be configured according to actual circumstances. Furthermore, the first, second, and third ends of each module described below can also be explained with reference to the respective ends of the first relay module 120, and will not be further described.

[0120] It is understandable that for certain high-voltage test items, such as voltage testing, direct measurement may result in significant errors. By connecting the first resistor to the measurement loop, the accuracy of the test results can be improved by measuring the voltage across the first resistor, as the resistance value of the first resistor is fixed. Furthermore, in the related art, if the battery under test is to be connected to a resistor, an additional resistor box must be connected, resulting in stacked equipment and high operational complexity. This embodiment integrates the first resistor within the high-voltage test device, simplifying equipment stacking and reducing operational complexity.

[0121] According to some embodiments of the present application, continue to refer to Figure 3 The high-voltage testing device 100 may further include: a first voltage measuring module 140, a first end of the first voltage measuring module 140 is electrically connected to the first wireless communication module 110, a second end of the first voltage measuring module 140 is electrically connected to the first port 310, and the first voltage measuring module 140 is used to measure the voltage of the first port 310.

[0122] In this embodiment, a first voltage measurement module 140 is built into the high-voltage test device. The first end of the first voltage measurement module 140 can be electrically connected to the first wireless communication module 110, so that the test data measured by the first voltage measurement module can be sent to the test terminal 400 through the first wireless communication module 110. The second end of the first voltage measurement module 140 can be used to be electrically connected to the first port to measure the voltage of the first port, thereby realizing test items such as voltage sampling.

[0123] The first voltage measurement module 140 may be used to detect the voltage between two pins in a measurement loop connected via the first port, and the measurement range may be 0-1000V.

[0124] It can be understood that in the related art, it is necessary to connect an external multimeter or other instrument to the battery to be tested to complete a special voltage test. However, this method will lead to equipment stacking and high operational complexity. In this embodiment, by building a first voltage measurement module into the high-voltage testing device, the equipment stacking and operational complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0125] According to some embodiments of the present application, the high-voltage testing device 100 also includes: a first signal conversion module 150, the first end of the first voltage measurement module 140 is electrically connected to the first wireless communication module 110 through the first signal conversion module 150, and the first signal conversion module 150 is used to perform signal conversion on the data transmitted between the first voltage measurement module 140 and the first wireless communication module 110 to realize communication between the first voltage measurement module 140 and the first wireless communication module 110.

[0126] In this embodiment, the first voltage measurement module 140 may be indirectly electrically connected to the first wireless communication module 110 through the first signal conversion module 150 .

[0127] It is understood that when the signal type of the first voltage measurement module is consistent with the signal type of the first wireless communication module 110, the first voltage measurement module can be directly electrically connected to the first wireless communication module to achieve mutual signal transmission. However, when the signal type of the first voltage measurement module is inconsistent with the signal type of the first wireless communication module 110, a first signal conversion module 150 is required to be provided between the two. The first signal conversion module 150 can convert the signal type of the first voltage measurement module to the signal type of the first wireless communication module 110, thereby achieving communication between the two.

[0128] There can be various types of the first signal conversion module 150, which can be specifically set according to the type of signal that needs to be converted. For example, the first signal conversion module can be a 485 to 232 signal conversion module for realizing two-way communication between the RS485 communication interface and the RS232 communication interface.

[0129] In this embodiment, signal transmission between the first voltage measurement module and the first wireless communication module can be achieved through the first signal conversion module, which is conducive to directly using the high-voltage test device to perform voltage measurement.

[0130] According to some embodiments of the present application, continue to refer to Figure 3 At least one first voltage measurement circuit 160 is provided between the second end of the first voltage measurement module 140 and the first port 310 , and the at least one first voltage measurement circuit 160 is used to be electrically connected to at least one high-voltage port to be tested of the battery to be tested 300 through the first port 310 in a one-to-one correspondence.

[0131] In this embodiment, Figure 3 The first voltage measurement module can be connected to the first port via a plurality of first voltage measurement lines 160. It is understood that, depending on the type of battery to be tested, the first port 310 can include at least one high-voltage port to be tested of the battery to be tested, for example, 1, 2, or 3 high-voltage ports to be tested.

[0132] Among them, the high-voltage port to be tested can be a front-wheel drive high-voltage port, a rear-wheel drive high-voltage port or a fast-charging high-voltage port, and the first port 310 can include at least one of the front-wheel drive high-voltage port, the rear-wheel drive high-voltage port and the fast-charging high-voltage port.

[0133] The number of first voltage measurement circuits 160 can be the same as the number of high-voltage ports to be tested included in the first port 310. When multiple first voltage measurement circuits 160 are provided, these voltage measurement circuits can be connected in parallel. If there is only one high-voltage port to be tested, the first voltage measurement module can be directly connected to it through the first port to complete voltage detection.

[0134] When the first port 310 includes three high-voltage ports to be tested, namely the front-wheel drive high-voltage port, the rear-wheel drive high-voltage port and the fast-charging high-voltage port, the number of first voltage measurement circuits 160 can be 3, and each first voltage measurement circuit can be electrically connected to a high-voltage port to be tested, so that the first voltage measurement module 140 can test each high-voltage port to be tested, thereby improving the test coverage.

[0135] In addition, a first backup measurement circuit may also be provided between the second end of the first voltage measurement module 140 and the first port 310. The first backup measurement circuit may be connected in parallel with multiple first voltage measurement circuits. When the first voltage measurement circuit fails, measurement may be performed through the first backup test circuit, thereby improving the redundancy of the test.

[0136] like Figure 3 In the embodiment, the first voltage measurement module 140 can be connected to the first port through four lines, three of which are the three first voltage measurement lines respectively connected to the front-wheel drive high-voltage port, the rear-wheel drive high-voltage port and the fast-charging high-voltage port, and the other line can be the first backup test line.

[0137] It is understood that the above embodiment implements the testing of multiple high-voltage ports to be tested by providing multiple first voltage measurement circuits in a high-voltage test device. In other embodiments, multiple high-voltage test devices can be provided to respectively implement the testing of multiple high-voltage ports to be tested, as will be described in detail below.

[0138] In other embodiments, the battery wireless testing system may include at least one high-voltage testing device 100, and the first voltage measurement module 140 in at least one high-voltage testing device 100 is respectively used to electrically connect to at least one high-voltage port to be tested of the battery to be tested through the first port 310.

[0139] It can be understood that the number of high-voltage testing devices in the battery wireless measurement system can be the same as the number of high-voltage ports to be tested.

[0140] When the first port 310 includes three high-voltage ports to be tested, namely a front-wheel drive high-voltage port, a rear-wheel drive high-voltage port, and a fast-charging high-voltage port, the battery wireless measurement system may include three high-voltage test devices 100. The first voltage measurement module in each high-voltage test device may be electrically connected to one of the high-voltage ports to be tested via a first voltage measurement line. Of course, in order to improve the reliability of the test, the first voltage measurement line in each high-voltage test device may also be connected in parallel with a first backup test line.

[0141] The above embodiment provides multiple first voltage test circuits or multiple high-voltage test devices, so as to measure multiple high-voltage ports to be tested of the battery 300 to be tested, and has high test coverage.

[0142] Figure 4 for Figure 1 Schematic diagram of the structure of the medium and low voltage test device; please refer to Figure 4According to some embodiments of the present application, the low-voltage testing device 200 may further include: a second relay module 220, a first end of the second relay module 220 is electrically connected to the second wireless communication module 210, a second end of the second relay module 220 is electrically connected to the second port 320, and the second relay module 220 is used to control the power supply status of the BMU in the battery to be tested 300.

[0143] In this embodiment, the low-voltage testing device 200 also includes a second relay module 220. The first end of the second relay module 220 can be electrically connected to the second wireless communication module 210, so that communication between the two can be achieved. For example, the opening and closing of the second relay module 220 can be controlled according to the test instructions received by the second wireless communication module, or the test data related to the second relay module 220 can be sent to the test terminal 400 through the second wireless communication module, etc.

[0144] The second end of the second relay module 220 may be electrically connected to the second port 320 , for example, may be connected to the second port 320 through the power supply line 270 , and specifically may be connected to the BMU through the second port 320 .

[0145] It is understood that the BMU can have different power supply states in different test items. For example, some test items require BMU participation, so the BMU needs to be powered on, while other test items do not require BMU participation, so the BMU needs to be powered off. The second relay module 220 can be composed of at least one switching circuit and can be used to control the power supply state of the BMU. Specifically, the second relay module 220 can be connected to the BMU via multiple power supply lines 270. The number of power supply lines 270 can be set according to the structure of the BMU. For example, the number can be four, corresponding to the three power supply lines and one backup power supply line connected to the BMU.

[0146] In this embodiment, the second relay module 220 can realize power on and off of various circuits in the BMU, thereby completing different test items and improving the test coverage.

[0147] According to some embodiments of the present application, continue to refer to Figure 4 The third end of the second relay module 220 is also electrically connected to the first end of at least one second resistor 230, and the second end of at least one second resistor 230 is electrically connected to the second port 320. The second relay module 220 is used to connect the at least one second resistor 230 to the battery to be tested 300.

[0148] The third end of the second relay module 220 can be electrically connected to the second port 320 via at least one second resistor 230. The second resistor 230 can be a common resistor structure, which can be a fixed value resistor. The unit of the second resistor 230 can be ohm, and the resistance can be 0.5k-2k, for example, 0.5k, 0.6k, 0.8k, 1k, 1.2k, 1.4k, 1.6k, 1.8k, 2k, etc.

[0149] It is understood that the low-voltage test device may be provided with at least one second resistor 230, with a first end of each second resistor 230 connected to the third end of the second relay module, and a second end of each second resistor connected to the second port. If multiple second resistors 230 are provided, the multiple second resistors 230 may be connected in parallel between the second relay module 220 and the second port 320.

[0150] In this embodiment, the second relay module 220 can be composed of at least one switching circuit, which can be used to connect one or more second resistors 230 to the second port, thereby connecting the second resistors to the battery under test 300, thereby allowing the second resistors to be connected to the test circuit. In this embodiment, the second resistor and the battery under test 300 can be connected in series, but of course, the two can also be connected in parallel.

[0151] It is understandable that for certain low-voltage test items, such as voltage testing, direct measurement may result in significant errors. By connecting a second resistor to the measurement loop, the accuracy of the test results can be improved by measuring the voltage across the second resistor, as the resistance value of the second resistor is fixed. Furthermore, in the related art, if the battery under test is to be connected to a resistor, an additional resistor box must be connected, resulting in stacked equipment and high operational complexity. This embodiment integrates the first resistor within the low-voltage test device, simplifying equipment stacking and reducing operational complexity.

[0152] According to some embodiments of the present application, the low voltage testing device 200 may further include: a second voltage measuring module 240, the first end of the second voltage measuring module 240 is electrically connected to the second wireless communication module 210, the second end of the second voltage measuring module 240 is electrically connected to the second port 320, and the second voltage measuring module 240 is used to measure the voltage of the second port.

[0153] In this embodiment, a second voltage measurement module 240 is built into the low-voltage test device. The first end of the second voltage measurement module 240 can be electrically connected to the second wireless communication module 210, so that the test data measured by the second voltage measurement module can be sent to the test terminal 400 through the second wireless communication module 210. The second end of the second voltage measurement module 240 can be used to electrically connect to the second port to measure the voltage of the second port, thereby realizing test items such as voltage sampling.

[0154] The second voltage measurement module 240 can be used to detect the voltage between two pins in a test loop connected via the second port, with a measurement range of 0-50 V. The second voltage measurement module can also be connected to the second port via multiple second voltage measurement lines connected in parallel. The number of lines can be set based on actual conditions. For example, two, three, four, or five lines can be set, one of which can be a spare line.

[0155] It can be understood that in the related art, it is necessary to connect an external multimeter or other instrument to the battery to be tested to complete a special voltage test. However, this method will lead to equipment stacking and high operational complexity. In this embodiment, by building a second voltage measurement module into the low-voltage test device, the equipment stacking and operational complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0156] According to some embodiments of the present application, the low voltage testing device 200 may further include: a resistance measuring module 250, wherein the first end of the resistance measuring module 250 is electrically connected to the second wireless communication module 210, and the second end of the resistance measuring module 250 is electrically connected to the second port 320, and the resistance measuring module 250 is used to detect the resistance of the second port 320.

[0157] In this embodiment, a resistance measurement module 250 is built into the low-voltage testing device. The first end of the resistance measurement module 250 can be electrically connected to the second wireless communication module 210 to achieve communication with the second wireless communication module 210. The second end of the resistance measurement module 250 can be used to electrically connect to the second port to measure the resistance of the second port, thereby achieving test items such as resistance sampling.

[0158] The resistance measurement module can also be connected to the second port through multiple parallel lines. The number of lines can be set according to actual conditions. For example, 2, 3, or 4 lines can be set, one of which can be a spare line.

[0159] It can be understood that in the related art, it is necessary to connect an external multimeter or other equipment to the battery to be tested to complete a special resistance test. However, this method will lead to equipment stacking and high operational complexity. In this embodiment, by building a resistance measurement module into the low-voltage test device, the equipment stacking and operational complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0160] It can be understood that by providing a first voltage measurement module and a first resistor in the high-voltage device and a second voltage measurement module, a second resistor, and a resistance measurement module in the low-voltage device, multi-dimensional instrument-level testing functions can be integrated into the battery wireless testing system, namely, multimeter functions (measuring voltage and resistance) and resistor (first resistor and second resistor) series and parallel functions, thereby improving test coverage, improving equipment stacking problems, and reducing operational complexity.

[0161] According to some embodiments of the present application, the low-voltage testing device 200 also includes: a second signal conversion module 260, the first end of the second voltage measurement module 240 is electrically connected to the second wireless communication module 210 through the second signal conversion module 260, and the second signal conversion module 260 is used to perform signal conversion on the data transmitted between the second voltage measurement module 240 and the second wireless communication module 210 to realize communication between the second voltage measurement module 240 and the second wireless communication module 210; the first end of the resistance measurement module 250 is electrically connected to the second wireless communication module 210 through the second signal conversion module 260, and the second signal conversion module 260 is also used to perform signal conversion on the data transmitted between the resistance measurement module 250 and the second wireless communication module 210 to realize communication between the resistance measurement module 250 and the second wireless communication module 210.

[0162] In this embodiment, the first end of the second voltage measurement module 240 and the first end of the resistance measurement module 250 are both connected to the second signal conversion module 260 , thereby being indirectly electrically connected to the second wireless communication module 210 through the second signal conversion module 260 .

[0163] It is understood that when the signal type of the second voltage measurement module or the signal type of the resistance measurement module is consistent with the signal type of the second wireless communication module 210, the second voltage measurement module and the resistance measurement module can be directly electrically connected to the second wireless communication module to achieve mutual signal transmission. However, when the signal type of the second voltage measurement module or the signal type of the resistance measurement module is inconsistent with the signal type of the second wireless communication module 210, a second signal conversion module 260 is required to be interposed. The second signal conversion module 260 can convert the signal type of the second voltage measurement module (or the signal type of the resistance measurement module) to the signal type of the second wireless communication module 210, thereby achieving communication between the two.

[0164] There can be various types of the second signal conversion module 260, which can be specifically set according to the type of signal that needs to be converted. For example, the second signal conversion module can be a 485 to 232 signal conversion module for realizing two-way communication between the RS485 communication interface and the RS232 communication interface.

[0165] In this embodiment, the second signal conversion module can realize signal transmission between the second voltage measurement module and the first wireless communication module, and between the resistance measurement module and the second wireless communication module, which is conducive to directly using the low-voltage test device to perform voltage and resistance measurements.

[0166] According to some embodiments of the present application, the low-voltage testing device 200 may further include: a test communication module 280, wherein the first end of the test communication module 280 is electrically connected to the second wireless communication module 210, and the second end of the test communication module 280 is electrically connected to the second port 320, and the test communication module 280 is used to test the communication function of the battery to be tested 300.

[0167] It is understood that the test communication module 280 can be used to test low-voltage communication functions and can be different modules for different communication protocols. For example, it can be a CAN FD (Controller Area Network with Flexible Data-Rate, CAN 2.0) module, which uses CAN 2.0 to implement CAN communication, thereby testing the CAN communication function of the BMU. Of course, it can also be a test communication module that uses other communication protocols, such as Ethernet / IP (Ethernet / Industrial Protocol) or Profibus (Process Field Bus), etc. The specific configuration can be based on the BMU's communication protocol.

[0168] In this embodiment, the test communication module 280 can be connected to the second port via three test lines. These three test lines can be used to test the communication status of the ACAN (Application CAN), SCAN (System CAN), and CHCAN (Check CAN). Among them, ACAN is the communication interface between the battery and the vehicle, SCAN is the interface used for writing programs or factory testing, and CHCAN is the handshake signal interface for power-on, etc. The above communication status can be tested through the test communication module 280. In this embodiment, the resistance measurement module can also be connected to the second port via four lines, three of which can be used to measure the resistance of the ACAN, SCAN, and CHCAN respectively, and the other one can be a backup line.

[0169] Of course, the number of parallel test lines and test functions in the test communication module 280 are not limited to the above three types. It may include only at least one of them, or may also include other types of tests.

[0170] In this embodiment, the low-voltage communication function of the battery to be tested can be tested by testing the communication module 280 to check whether it meets the design requirements.

[0171] In some embodiments, the first resistor and the second resistor may be implemented using a programmable series-parallel resistor array. This approach allows for a miniaturized design of the first resistor and the second resistor, further reducing the size of the device.

[0172] Figure 5 For a flow chart of a battery wireless testing method provided in some embodiments of the present application, please refer to Figure 5 The embodiment of the present application further provides a battery wireless testing method 600, which is used for a high-voltage testing device in a battery wireless testing system in any of the above embodiments; the method 600 includes steps S610 to S630.

[0173] Step S610 : Acquire a first test instruction through the first wireless communication module 110 .

[0174] Step S620 : Controlling the battery to be tested to perform a high voltage test based on the first test instruction, and obtaining first test data of the high voltage test.

[0175] Step S630 : Send the first test data to the test terminal 400 through the first wireless communication module 110 .

[0176] In this embodiment, the high-voltage test device 100 can communicate directly or indirectly with the test terminal 400 via the first wireless communication module 110. It is understood that the test terminal 400 may also be provided with a wireless communication module. Direct communication between the high-voltage test device 100 and the test terminal 400 can be achieved through a wireless communication connection between the first wireless communication module and the wireless communication module of the test terminal. Of course, indirect communication between the two can also be achieved via other wireless communication modules. The following description uses direct communication as an example.

[0177] The first test instruction may be a control instruction for one or more high-voltage test items (the first high-voltage test). The first test instruction is generated by the test terminal and may be directly sent by the test terminal 400 to the first wireless communication module 110 and directly received by the high-voltage testing device 100. After receiving the first test instruction, the high-voltage testing device may control the battery under test to perform the first high-voltage test corresponding to the first test instruction and obtain first test data of the first high-voltage test. It will be understood that because the high-voltage testing device and the battery under test are connected via a wired communication connection via the first port, the first test instruction and the first test data can be transmitted between the two.

[0178] After obtaining the first test data, the high-voltage test device may send the data to the test terminal 400 via the first wireless communication module 110 , and the test terminal 400 may analyze and judge the first test data.

[0179] In this embodiment, the high-voltage test device can communicate with the test terminal to obtain test instructions and send test results, which is conducive to the reliable implementation of high-voltage testing.

[0180] According to some embodiments of the present application, the first test instruction is a test instruction sent by the test terminal 400 to the first wireless communication module 110; or, the first test instruction is a test instruction sent by the test terminal 400 to the second wireless communication module 210 of the low-voltage testing device 200, and forwarded by the second wireless communication module 210 to the first wireless communication module 110.

[0181] In this embodiment, the first wireless communication module 110 may directly communicate with the test terminal, thereby directly acquiring the first test instruction sent by the test terminal.

[0182] In other embodiments, the high-voltage test device 100 may be a slave test control device, and the low-voltage test device 200 may be a master test control device. The high-voltage test device 100 may communicate with the test terminal through the low-voltage test device 200. A first test instruction may be sent by the test terminal 400 to the second wireless communication module 210, which is first received by the low-voltage test device. The low-voltage test device 200 may then forward the first test instruction to the first wireless communication module 110 via the second wireless communication module 210, which is then received by the high-voltage test device 100, and then perform a high-voltage test. The result of the high-voltage test may be sent directly to the test terminal 400, or may be forwarded by the low-voltage test device.

[0183] The method provided in this embodiment can realize communication between a high-voltage test device and a test terminal. Direct communication can improve communication efficiency, while indirect communication can improve scalability, reduce communication complexity, optimize network structure, and improve maintainability.

[0184] Figure 6 This is a flowchart of a battery wireless testing method provided in some other embodiments of the present application. Figure 6 The embodiment of the present application provides a battery wireless testing method 700, which is used for the low voltage testing device 200 in the battery wireless testing system in any of the above embodiments; the method 700 includes steps S710 to S730.

[0185] Step S710 : Acquire a second test instruction through the second wireless communication module 210 .

[0186] Step S720 : Control the battery under test 300 to perform a first low-voltage test based on the second test instruction, and obtain second test data of the first low-voltage test.

[0187] Step S730: Send the second test data to the test terminal 400 via the second wireless communication module.

[0188] In this embodiment, the low-voltage test device 200 can communicate directly or indirectly with the test terminal 400 via the second wireless communication module 210. It is understood that the test terminal 400 may also be provided with a wireless communication module. Direct communication between the low-voltage test device 200 and the test terminal 400 can be achieved through a wireless communication connection between the second wireless communication module and the wireless communication module of the test terminal. Of course, indirect communication between the two can also be achieved via other wireless communication modules. The following description uses direct communication as an example.

[0189] The second test instruction can be a control instruction for one or more low-voltage test items (the first low-voltage test). The second test instruction is generated by the test terminal and can be directly sent by the test terminal 400 to the second wireless communication module 210 and directly received by the low-voltage testing device 200. After receiving the second test instruction, the low-voltage testing device 200 can control the battery under test to perform the first low-voltage test corresponding to the second test instruction and obtain second test data of the first low-voltage test. It will be understood that because the low-voltage testing device and the battery under test are connected by wired communication via the second port, the second test instruction and the second test data can be transmitted between the two.

[0190] After obtaining the second test data, the low voltage test device 200 may send the data to the test terminal 400 via the second wireless communication module 210 , and the test terminal 400 may analyze and judge the second test data.

[0191] In this embodiment, the low-voltage test device can communicate with the test terminal to obtain test instructions and send test results, which is conducive to the reliable implementation of the low-voltage test.

[0192] According to some embodiments of the present application, the second test instruction is a test instruction sent by the test terminal 400 to the second wireless communication module 210; or, the second test instruction is a test instruction sent by the test terminal 400 to the first wireless communication module 110 of the high-voltage testing device, and forwarded by the first wireless communication module 110 to the second wireless communication module 210.

[0193] In this embodiment, the second wireless communication module 210 may communicate directly with the test terminal, thereby directly acquiring the second test instruction sent by the test terminal.

[0194] In other embodiments, the high-voltage test device 100 can serve as a master test control device, and the low-voltage test device 200 can serve as a slave test control device. The low-voltage test device 200 can communicate with the test terminal through the high-voltage test device 100. For example, the second test instruction can be sent by the test terminal 400 to the first wireless communication module 110, so that it is first received by the high-voltage test device. Then, the high-voltage test device 100 can forward the second test instruction to the second wireless communication module 210 through the first wireless communication module 110, so that it is received by the low-voltage test device 200, and then a low-voltage test is performed. The result of the low-voltage test can be sent directly to the test terminal 400, or it can also be forwarded by the high-voltage test device.

[0195] The method provided in this embodiment can realize communication between the low-voltage test device and the test terminal. It can improve communication efficiency through direct communication and improve scalability through indirect communication. It can also reduce the complexity of communication, optimize the network structure, and improve maintainability.

[0196] It can be understood that, unless otherwise specified, the connections in each embodiment of the present application, such as electrical connections, communication connections, etc., can be direct connections or indirect connections.

[0197] Figure 7 For schematic diagrams of high voltage testing devices provided in other embodiments of the present application, please refer to Figure 7 , an embodiment of the present application provides a high-voltage testing device 100, which is a high-voltage testing device in any of the above-mentioned battery wireless testing systems; the high-voltage testing device 100 includes: a first control module 170, the first control module 170 is used to obtain a first test instruction through a first wireless communication module 110; based on the first test instruction, the battery to be tested 300 is controlled to perform a first high-voltage test, and first test data of the first high-voltage test is obtained; the first test data is sent to the test terminal 400 through the first wireless communication module 110.

[0198] The first control module 170 can execute steps S610 to S630 in the battery wireless testing method 600. For the sake of brevity, they are not described here in detail. It should be understood that corresponding to the embodiment of the battery wireless testing method 600, the high voltage testing device 100 can also include more modules.

[0199] The first control module 170 can be connected to the first wireless communication module 110 to control the first wireless communication module 110 to communicate. It can be understood that the first wireless communication module 110 can be concentrated in the first control module 170, or the first wireless communication module 110 can be set independently from the first control module 170.

[0200] At the same time, in some embodiments, the first control module 170 can also control Figure 3 The remaining modules in the high voltage test device 100 shown, or the control Figure 3 The transmission of instructions or test data between various modules.

[0201] Figure 8 For schematic diagrams of low-voltage test devices provided in other embodiments of the present application, please refer to Figure 8 , an embodiment of the present application provides a low-voltage testing device 200, which is a low-voltage testing device in a battery wireless testing system in any of the above embodiments; the low-voltage testing device 200 includes: a second control module 290, the second control module 290 is used to obtain a second test instruction through a second wireless communication module 210; based on the second test instruction, the battery to be tested 300 is controlled to perform a first low-voltage test, and obtain second test data of the first low-voltage test; and the second test data is sent to the test terminal 400 through the second wireless communication module 210.

[0202] The second control module 290 can be used to execute steps S710 to S730 in the battery wireless testing method 700. For the sake of brevity, they are not described here in detail. It should be understood that corresponding to the embodiment of the battery wireless testing method 700, the low voltage testing device 200 can also include more modules.

[0203] The second control module 290 can be connected to the second wireless communication module 210 to control the second wireless communication module 210 to communicate. It can be understood that the second wireless communication module 210 can be concentrated in the second control module 290, or the second wireless communication module 210 can be set independently from the second control module 290.

[0204] At the same time, in some embodiments, the second control module 290 can also control Figure 4 The remaining modules in the low voltage test device 200 shown, or the control Figure 4 The transmission of instructions or test data between various modules.

[0205] It should be noted that the functionality of the various modules discussed herein can be divided into multiple modules, and / or at least some functionality of multiple modules can be combined into a single module. A specific module discussed herein performing an action includes the specific module itself performing the action, or alternatively, the specific module calling or otherwise accessing another component or module that performs the action (or performs the action in conjunction with the specific module). Therefore, a specific module performing an action can include the specific module itself performing the action and / or another module that the specific module calls or otherwise accesses to perform the action.

[0206] It should also be understood that various techniques may be described herein in the general context of software hardware elements or program modules. Figure 7 or Figure 8 The various modules described can be implemented in hardware or in hardware in combination with software and / or firmware. For example, these modules can be implemented as computer program code / instructions that are configured to be executed in one or more processors and stored in a computer-readable storage medium. Alternatively, these modules can be implemented as hardware logic / circuits. The hardware logic / circuit can include an integrated circuit chip (which includes a processor (e.g., a central processing unit (CPU), a microcontroller, a microprocessor, a digital signal processor (DSP), etc.), a memory, one or more communication interfaces, and / or one or more components in other circuits), and can optionally execute received program code and / or include embedded firmware to perform functions.

[0207] Figure 9 Schematic diagram of a computing device for implementing a battery wireless testing method provided in some embodiments of the present application. Figure 9 As shown, an embodiment of the present application also provides a computing device 800, including: at least one processor 805; and at least one memory 807 communicatively connected to the at least one processor 805, the at least one memory 807 storing instructions, which, when executed individually or collectively by the at least one processor 805, enable the computing device to execute the method of any of the above embodiments.

[0208] The computing device 800 may include at least one processor 805, memory 807, communication interface(s) 802, a display device 801, other input / output (I / O) devices 803, and one or more mass storage devices 806, all capable of communicating with one another, such as via a bus 804 or other appropriate connections. The memory 807 may store instructions that, when executed by the processor 805, cause the processor 805 to perform the wireless battery testing method 600 or the wireless battery testing method 700 described in the above-described embodiments.

[0209] The processor 805 may be a single processing unit or multiple processing units, all of which may include a single or multiple computing units or multiple cores. The processor 805 may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuits, and / or any computing device that manipulates signals based on operational instructions. Among other capabilities, the processor 805 may be configured to retrieve and execute computer-readable instructions stored in the memory 807, mass storage device 806, or other computer-readable media, such as program code for an operating system 808, program code for application programs 809, program code for other programs 810, and the like.

[0210] Memory 807 and mass storage device 806 are examples of computer-readable storage media for storing instructions that are executed by processor 805 to implement the various functions described above. For example, memory 807 may generally include both volatile memory and non-volatile memory (e.g., RAM, ROM, etc.). Furthermore, mass storage device 806 may generally include a hard drive, a solid-state drive, removable media, including external and removable drives, memory cards, flash memory, floppy disks, optical disks (e.g., CDs, DVDs), storage arrays, network-attached storage, storage area networks, and the like. Memory 807 and mass storage device 806 may be collectively referred to herein as memory or computer-readable storage media and may be non-transitory media capable of storing computer-readable, processor-executable program instructions as computer program code, which may be executed by processor 805 as a specific machine configured to implement the operations and functions described in the examples herein.

[0211] A plurality of programs may be stored on the mass storage device 806. These programs include an operating system 808, one or more application programs 809, other programs 810, and program data 811, and may be loaded into the memory 807 for execution. Examples of such application programs or program modules may include, for example, computer program logic (e.g., computer program code or instructions) for implementing the following components / functions: the high-voltage test apparatus 100 (including the first control module 170), the battery wireless testing method 600 (including any suitable steps of the battery wireless testing method 600), the low-voltage test apparatus 200 (including the second control module 290), the battery wireless testing method 700 (including any suitable steps of the battery wireless testing method 700), and / or other embodiments described herein.

[0212] Although Figure 9800 , but operating system 808 , application programs 809 , other programs 810 , and program data 811 , or portions thereof, may be implemented using any form of computer-readable media accessible by computing device 800 .

[0213] One or more communication interfaces 802 are used to exchange data with other computing devices, such as via a network, direct connection, or the like. Such communication interfaces may be one or more of the following: any type of network interface (e.g., a network interface card (NIC)), a wired or wireless wireless interface (such as an IEEE 802.11 wireless LAN (WLAN)), a Worldwide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth™ interface, a Near Field Communication (NFC) interface, or the like. The communication interface 802 may facilitate communication within a variety of network and protocol types, including wired networks (e.g., LAN, cable, etc.) and wireless networks (e.g., WLAN, cellular, satellite, etc.), the Internet, or the like. The communication interface 802 may also provide for communication with external storage devices (not shown), such as storage arrays, network-attached storage, storage area networks, or the like.

[0214] In some examples, a display device 801 such as a monitor may be included for displaying information and images to the user. Other I / O devices 803 may be devices that receive various inputs from the user and provide various outputs to the user, and may include a touch input device, a gesture input device, a camera, a keyboard, a remote control, a mouse, a printer, an audio input / output device, and the like.

[0215] The techniques described herein can be supported by these various configurations of the computing device 800, including but not limited to the specific examples of the techniques described herein. For example, the functionality can also be implemented in whole or in part on a "cloud" using a distributed system. The cloud includes and / or represents a platform for resources. The platform abstracts the underlying functionality of the cloud's hardware (e.g., servers) and software resources. Resources can include applications and / or data that can be used when performing computing processing on servers remote from the computing device 800. Resources can also include services provided over the Internet and / or through a subscriber network such as a cellular or Wi-Fi network. The platform can abstract resources and functionality to connect the computing device 800 with other computer devices. Therefore, the implementation of the functionality described herein can be distributed throughout the cloud. For example, the functionality can be implemented partially on the computing device 800 and partially through a platform that abstracts the functionality of the cloud.

[0216] An embodiment of the present application also provides a computer-readable storage medium having instructions stored thereon. When the instructions are executed individually or collectively by one or more processors of a computing device, the computing device executes a method as described in any of the above embodiments.

[0217] Computer-readable storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer-readable instructions, data structures, program modules, or other data. Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVDs), or other optical storage devices, magnetic cassettes, magnetic tape, magnetic disk storage devices or other magnetic storage devices, or any other non-transmission media that can be used to store information for access by a computer device.

[0218] An embodiment of the present application provides a computer program product, including instructions, which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to perform the method of any of the above embodiments.

[0219] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0220] In a specific embodiment, please refer to Figures 1 to 4The embodiment of the present application provides a battery wireless testing system, including: a high-voltage testing device 100 and a low-voltage testing device 200. The high-voltage testing device 100 is used to communicate with the first port 310 of the battery 300 to be tested by wired communication, and the high-voltage testing device 100 includes a first wireless communication module 110, and the first wireless communication module 110 is used to wirelessly connect to the test terminal 400 to transmit the high-voltage test data of the battery 300 to be tested measured by the high-voltage testing device 100 to the test terminal 400; the low-voltage testing device 200 is separately provided from the high-voltage testing device 100, and the low-voltage testing device 200 is used to communicate with the second port 320 of the battery 300 to be tested by wired communication, and the low-voltage testing device 200 includes a second wireless communication module 310, and the second wireless communication module 210 is used to wirelessly connect to the test terminal 400 to transmit the low-voltage test data of the battery 300 to be tested measured by the low-voltage testing device 200 to the test terminal 400. The first wireless communication module 110 is also wirelessly connected to the second wireless communication module 210; the first wireless communication module 110 is used to obtain the first test instruction issued by the test terminal 400 through the second wireless communication module 210; and / or, the second wireless communication module 210 is used to obtain the second test instruction issued by the test terminal 400 through the first wireless communication module 110.

[0221] The high-voltage test device further includes a first signal conversion module 150, a first voltage measurement module 140, and a first relay module 120. The first voltage measurement module is connected to the first wireless communication module via the first signal conversion module 150. The first voltage measurement module is also connected to the first port, and the first relay module is connected between the first wireless communication module and the first port. It will be appreciated that the various modules in the high-voltage test device can be connected to sub-ports of the first port with different functions.

[0222] The low-voltage test device also includes a second signal conversion module 260, a second voltage measurement module 240, a resistance measurement module 250, a test communication module 280, and a second relay module 220. The test communication module 280 can be a CANFD communication module, which and the second relay module are both connected between the second wireless communication module and the second port. The second voltage measurement module and the resistance measurement module are both connected to the second wireless communication module via the second signal conversion module, and the second voltage measurement module and the resistance measurement module are also connected to the second port. It is understood that each module in the low-voltage test device can be connected to each sub-port with different functions in the second port.

[0223] In this embodiment, since the high-voltage and low-voltage test devices are not integrated into the test cabinet but are instead separately installed, the battery wireless testing system is simplified, enabling miniaturization of wireless testing. Furthermore, since wireless communication modules are built into each of the high-voltage and low-voltage test devices, wireless high-voltage and low-voltage testing can be achieved. Miniaturization and wireless integration overcome spatial constraints and enable flexible deployment. Specifically, the battery wireless testing system can perform high- and low-voltage testing concurrently without interfering with normal manufacturing or battery transport at other stations. This allows at least some test items (high-voltage and low-voltage testing) to be performed earlier at a test station, reducing the number of test items at that station and improving testing efficiency. Furthermore, since the high-voltage and low-voltage test devices are separated from the test cabinet, the test cabinet's volume can be reduced.

[0224] Furthermore, in related art high- and low-voltage tests, high-voltage sampling must be performed first, followed by low-voltage CAN communication testing, resulting in a long battery test cycle. This embodiment, by separating the high- and low-voltage test components, improves hardware coupling, overcomes the serial interlocking of high- and low-voltage tests, restructures the test flow, and enables parallel execution of high- and low-voltage tests. This allows for rational resource allocation and improved resource utilization, shortens test cycles, and improves test efficiency. Verified tests have shown that test cycles can be shortened by over 20%.

[0225] Furthermore, unlike test cabinets in related art that require long wiring harnesses, this embodiment achieves wireless communication through first and second wireless communication modules, eliminating wiring harness dependency and replacing over 90% of physical cables. Furthermore, because the high-voltage and low-voltage test devices are separate, both can be connected to different interfaces of the battery under test via shorter wiring harnesses, further reducing wiring harness length compared to test cabinets in related art.

[0226] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery wireless testing system, characterized in that: include: a high-voltage testing device, the high-voltage testing device being connected to a first port of a battery to be tested by wired communication, and the high-voltage testing device comprising a first wireless communication module, the first wireless communication module being connected to a test terminal by wireless communication to transmit high-voltage test data of the battery to be tested measured by the high-voltage testing device to the test terminal; a low-voltage testing device, the low-voltage testing device being separately provided from the high-voltage testing device, and the low-voltage testing device being configured to be connected to a second port of the battery to be tested by wired communication, the low-voltage testing device including a second wireless communication module configured to be connected to the test terminal by wireless communication to transmit low-voltage test data of the battery to be tested measured by the low-voltage testing device to the test terminal; The first wireless communication module is also wirelessly connected to the second wireless communication module; The first wireless communication module is used to obtain a first test instruction issued by the test terminal through the second wireless communication module; and / or the second wireless communication module is used to obtain a second test instruction issued by the test terminal through the first wireless communication module; The battery wireless testing system is further configured to switch between a master and a slave control device according to load conditions of the high-voltage testing device and the low-voltage testing device; The high-voltage test device has a built-in first voltage measurement module, and the low-voltage test device has a built-in second voltage measurement module and a resistance measurement module.

2. The battery wireless testing system according to claim 1, characterized in that: The high voltage testing device further comprises: A first relay module, wherein a first end of the first relay module is electrically connected to the first wireless communication module, a second end of the first relay module is electrically connected to a first end of at least one first resistor, and a second end of the at least one first resistor is electrically connected to the first port, and the first relay module is used to connect the at least one first resistor to the battery to be tested.

3. The battery wireless testing system according to claim 1 or 2, characterized in that: A first end of the first voltage measurement module is electrically connected to the first wireless communication module, a second end of the first voltage measurement module is electrically connected to the first port, and the first voltage measurement module is used to measure the voltage of the first port.

4. The battery wireless testing system according to claim 3, characterized in that: The high voltage testing device further comprises: a first signal conversion module, wherein the first end of the first voltage measurement module is electrically connected to the first wireless communication module through the first signal conversion module, and the first signal conversion module is used to perform signal conversion on the data transmitted between the first voltage measurement module and the first wireless communication module to realize communication between the first voltage measurement module and the first wireless communication module.

5. The battery wireless testing system according to claim 3, characterized in that: At least one first voltage measurement circuit is provided between the second end of the first voltage measurement module and the first port, and the at least one first voltage measurement circuit is used to be electrically connected to at least one high-voltage port to be tested of the battery to be tested through the first port in a one-to-one correspondence; or, The battery wireless testing system includes at least one high-voltage testing device, and the first voltage measurement modules in the at least one high-voltage testing device are respectively used to be electrically connected to at least one high-voltage port to be tested of the battery to be tested through the first port in a one-to-one correspondence.

6. The battery wireless testing system according to claim 1 or 2, characterized in that: The low voltage testing device further comprises: A second relay module, wherein a first end of the second relay module is electrically connected to the second wireless communication module, a second end of the second relay module is electrically connected to the second port, and the second relay module is used to control the power supply status of the BMU in the battery to be tested.

7. The battery wireless testing system according to claim 6, characterized in that: The third end of the second relay module is also electrically connected to the first end of at least one second resistor, and the second end of the at least one second resistor is electrically connected to the second port. The second relay module is used to connect the at least one second resistor to the battery to be tested.

8. The battery wireless testing system according to claim 1 or 2, characterized in that: A first end of the second voltage measurement module is electrically connected to the second wireless communication module, a second end of the second voltage measurement module is electrically connected to the second port, and the second voltage measurement module is used to measure the voltage of the second port.

9. The battery wireless testing system according to claim 8, characterized in that: A first end of the resistance measurement module is electrically connected to the second wireless communication module, a second end of the resistance measurement module is electrically connected to the second port, and the resistance measurement module is used to detect the resistance of the second port.

10. The battery wireless testing system according to claim 9, characterized in that: The low voltage testing device further comprises: a second signal conversion module, wherein the first end of the second voltage measurement module is electrically connected to the second wireless communication module through the second signal conversion module, and the second signal conversion module is used to perform signal conversion on data transmitted between the second voltage measurement module and the second wireless communication module to achieve communication between the second voltage measurement module and the second wireless communication module; The first end of the resistance measuring module is electrically connected to the second wireless communication module through the second signal conversion module. The second signal conversion module is also used to perform signal conversion on the data transmitted between the resistance measuring module and the second wireless communication module to realize communication between the resistance measuring module and the second wireless communication module.

11. The battery wireless testing system according to claim 1 or 2, characterized in that: The low voltage testing device further comprises: A test communication module, wherein a first end of the test communication module is electrically connected to the second wireless communication module, a second end of the test communication module is electrically connected to the second port, and the test communication module is used to test the communication function of the battery to be tested.

12. A battery wireless testing method, characterized in that: A high voltage testing device for a wireless battery testing system according to any one of claims 1 to 11; the method comprising: Acquire a first test instruction through the first wireless communication module; Controlling the battery to be tested to perform a first high-voltage test based on the first test instruction, and obtaining first test data of the first high-voltage test; The first test data is sent to a test terminal through the first wireless communication module.

13. The method according to claim 12, characterized in that The first test instruction is a test instruction sent by the test terminal to the first wireless communication module; or, The first test instruction is a test instruction sent by the test terminal to the second wireless communication module of the low-voltage test device, and forwarded by the second wireless communication module to the first wireless communication module.

14. A battery wireless testing method, characterized in that: A low voltage testing device for a battery wireless testing system according to any one of claims 1 to 11; the method comprising: Acquire a second test instruction through the second wireless communication module; Controlling the battery to be tested to perform a first low-voltage test based on the second test instruction, and obtaining second test data of the first low-voltage test; The second test data is sent to the test terminal through the second wireless communication module.

15. The method according to claim 14, characterized in that The second test instruction is a test instruction sent by the test terminal to the second wireless communication module; or, The second test instruction is a test instruction sent by the test terminal to the first wireless communication module of the high-voltage test device, and forwarded by the first wireless communication module to the second wireless communication module.

16. A high voltage testing device, characterized in that: The high-voltage testing device is the high-voltage testing device in the battery wireless testing system according to any one of claims 1 to 11; The high voltage testing device comprises: A first control module, configured to obtain a first test instruction through a first wireless communication module; Based on the first test instruction, the battery to be tested is controlled to perform a first high-voltage test, and first test data of the first high-voltage test is obtained; and the first test data is sent to a test terminal through the first wireless communication module.

17. A low voltage testing device, characterized in that: The low-voltage testing device is a low-voltage testing device in the battery wireless testing system according to any one of claims 1 to 11; The low-voltage testing device comprises: A second control module is configured to obtain a second test instruction through a second wireless communication module; control the battery to be tested to perform a first low-voltage test based on the second test instruction, and obtain second test data of the first low-voltage test; and send the second test data to a test terminal through the second wireless communication module.

18. A computing device, characterized in that include: at least one processor; as well as At least one memory is communicatively connected to the at least one processor, the at least one memory storing instructions, which, when executed individually or collectively by the at least one processor, cause the computing device to perform the method of any one of claims 12 to 15.

19. A computer-readable storage medium, characterized in that Instructions are stored which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to perform the method of any one of claims 12 to 15.

20. A computer program product, characterized in that The method comprises instructions which, when executed individually or collectively by one or more processors of a computing device, cause the computing device to perform the method of any one of claims 12 to 15.

Images