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

Abstract

The invention provides a battery wireless test system and method, a high-voltage test device and a low-voltage test device, and belongs to the technical field of batteries. The system comprises a high-voltage testing device and a low-voltage testing device, the high-voltage testing device is used for being in wired communication connection with a first port of a battery to be tested, the high-voltage testing device comprises a first wireless communication module, and the first wireless communication module is used for being in wireless communication connection with a testing terminal; the low-voltage testing device and the high-voltage testing device are arranged in a split mode, the low-voltage testing device is used for being in wired communication connection with a second port of the battery to be tested, and the low-voltage testing device comprises a second wireless communication module which is used for being in wireless communication connection with a testing terminal. And the first wireless communication module is also in wireless communication connection with the second wireless communication module. High-voltage testing and low-voltage testing can be advanced, and the testing efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery wireless testing system, method, high-voltage testing device, and low-voltage testing device. Background Art

[0002] In order to make the performance of the battery meet the design requirements, it is necessary to strictly test the battery. EOL (End of Line) testing refers to the quality control and performance verification testing carried out in the final stage of battery production, which is an important link in the battery production process.

[0003] However, in the related art, the EOL testing cycle of the battery is long and the testing efficiency is low. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the background art. For this reason, an object of this 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 this application provides a battery wireless testing system, including: a high-voltage testing device and a low-voltage testing device. The high-voltage testing device is used for wired communication connection with the first port of the battery under test, and the high-voltage testing device includes a first wireless communication module. The first wireless communication module is used for wireless communication connection with the test terminal to transmit the high-voltage test data of the battery under test 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 for wired communication connection with the second port of the battery under test. The low-voltage testing device includes a second wireless communication module. The second wireless communication module is used for wireless communication connection with the test terminal to transmit the low-voltage test data of the battery under test measured by the low-voltage testing device to the test terminal, and the first wireless communication module is also wirelessly communicatively connected to the second wireless communication module. The first wireless communication module is used to obtain the 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 the 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 arranged 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. Furthermore, the high-voltage test and the low-voltage test can be advanced and carried out simultaneously while other processes of the battery are being performed, thereby reducing the residence time of the battery at the test station and improving the test rhythm and test efficiency. In addition, because the high-voltage test device and the low-voltage test device are separately arranged, the high-voltage test device and the low-voltage test device can perform tests in parallel without having to complete the high-voltage test and the low-voltage test sequentially, further improving the test rhythm 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 cooperation of the high-voltage test device and the low-voltage test device can be completed. Moreover, through the master-slave control method, the scalability can be improved, the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0007] In some embodiments, the high-voltage test device further includes: a first relay module, 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 at least one first resistor is electrically connected to the first port. The first relay module is configured to connect at least one first resistor to the battery under test.

[0008] By connecting the first resistor to the measurement circuit, 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 test device further includes: a first voltage measurement module, 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. The first voltage measurement module is configured to measure the voltage of the first port.

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

[0011] In some embodiments, the high-voltage test device further includes: a first signal conversion module, a first end of the first voltage measurement module is electrically connected to the first wireless communication module through the first signal conversion module. The first signal conversion module is configured to perform signal conversion on the data transmitted between the first voltage measurement module and the first wireless communication module to enable 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 test device further includes: a resistance measurement module, the first end of the resistance measurement module is electrically connected to the second wireless communication module, the 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.

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

[0023] In some embodiments, the low-voltage test device further 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 achieve 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 achieve communication between the resistance measurement module and the second wireless communication module.

[0024] In this embodiment, through the second signal conversion module, 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 can be achieved, which is beneficial to directly using the low-voltage test device for voltage and resistance measurement.

[0025] In some embodiments, the low-voltage test device further includes: a test communication module, the first end of the test communication module is electrically connected to the second wireless communication module, the 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 under test.

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

[0027] An embodiment of the second aspect of the present application provides a battery wireless test method for the high-voltage test device in the battery wireless test system in any of the above embodiments; the method includes: obtaining a first test instruction through the first wireless communication module; controlling the battery under test to perform a first high-voltage test based on the first test instruction, and obtaining first test data of the first high-voltage test; sending the first test data to the 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 beneficial to the reliable progress 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 achieve communication between the high-voltage test device and the test terminal. The communication efficiency can be improved through direct communication, while the scalability can be improved through indirect communication, and the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0031] An embodiment of the third aspect of this application provides a battery wireless test method for the low-voltage test device in the battery wireless test system of any of the above; the method includes: obtaining a second test instruction through the second wireless communication module; controlling the battery under test to perform a first low-voltage test based on the second test instruction and obtaining second test data of the first low-voltage test; sending the second test data to the 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 beneficial to the reliable progress of low-voltage tests.

[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 test device and forwarded by the first wireless communication module to the second wireless communication module.

[0034] The method provided in this embodiment can achieve communication between the low-voltage test device and the test terminal. The communication efficiency can be improved through direct communication, while the scalability can be improved through indirect communication, and the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0035] An embodiment of the fourth aspect of this application provides a high-voltage test device, which is the high-voltage test device in the battery wireless test system of any of the above embodiments; the high-voltage test device includes: a first control module, configured to obtain a first test instruction through the first wireless communication module; control the battery under test to perform a first high-voltage test based on the first test instruction and obtain first test data of the first high-voltage test; send the first test data to the 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 the 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, configured to obtain a second test instruction through a second wireless communication module; control a battery under test 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.

[0037] An embodiment of the sixth aspect of the present application provides a computing device, including: at least one processor; and at least one memory communicatively connected to the at least one processor, where the at least one memory stores instructions, and when the instructions are executed alone or jointly by the at least one processor, the computing device is caused to execute the battery wireless testing method in the above embodiments.

[0038] An embodiment of the seventh aspect of the present application provides a computer-readable storage medium storing instructions, and when the instructions are executed alone or jointly by one or more processors of a computing device, the computing device is caused to execute the battery wireless testing method in the above embodiments.

[0039] An embodiment of the eighth aspect of the present application provides a computer program product including instructions, and when the instructions are executed alone or jointly by one or more processors of a computing device, the computing device is caused to execute the battery wireless testing method in the above embodiments.

[0040] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote 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 accordance with the present application and should not be regarded as limiting the scope of the present application.

[0042] Figure 1 is a schematic structural diagram of a battery wireless testing system provided by some embodiments of the present application; Figure 2 is an application flowchart of a battery wireless testing system provided by some embodiments of the present application; Figure 3 is Figure 1 a schematic structural diagram of a medium-high voltage testing device; Figure 4 is Figure 1 a schematic structural diagram of a medium-low voltage testing device; Figure 5 Schematic flow diagram of the battery wireless testing method provided for some embodiments of the present application; Figure 6 Schematic flow diagram of the battery wireless testing method provided for some other embodiments of the present application; Figure 7 Schematic diagram of the high-voltage testing device provided for some other embodiments of the present application; Figure 8 Schematic diagram of the low-voltage testing device provided for some other embodiments of the present application; Figure 9 Schematic diagram of the computing device for implementing the battery wireless testing method provided for some embodiments of the present application.

[0043] Explanation of reference numerals: High-voltage testing device 100, first wireless communication module 110, first relay module 120, first resistor 130, first voltage measurement module 140, first signal conversion module 150, first voltage measurement line 160, first control module 170; Low-voltage testing device 200, second wireless communication module 210, second relay module 220, second resistor 230, second voltage measurement module 240, resistor measurement module 250, second signal conversion module 260, power supply line 270, test communication module 280, second control module 290; Battery under test 300, first port 310, second port 320; Test terminal 400. Detailed implementation manners

[0044] Hereinafter, embodiments of the technical solutions of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above accompanying drawing description are intended to cover non-exclusive inclusion.

[0046] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "plural" is more than two, unless otherwise specifically and clearly defined.

[0047] Reference to "embodiment" in this text means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0049] In the description of the embodiments of the present application, the term "plural" 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).

[0050] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0051] In the description of the embodiments of the present application, unless otherwise clearly specified and defined, technical terms such as "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may also be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0052] To ensure that the performance of the battery meets the design requirements, the battery needs to be strictly tested. EOL testing refers to the quality control and performance verification testing carried out in the final stage of battery production, which is an important link in the battery production process.

[0053] In the related art, the EOL testing of the battery is usually carried out by a test cabinet. The test cabinet integrates the equipment required for various test items of the battery. For the high-voltage testing (such as high-voltage sampling, relay function detection) and low-voltage testing (such as CAN (Controller Area Network) communication, SOC (State of Charge) calibration) in the battery EOL testing, an integrated high-low voltage testing architecture is usually adopted. That is, high-voltage testing equipment and low-voltage testing equipment are arranged in the test cabinet, and the two are integrally arranged in the test cabinet, and the testing is realized through the wired connection mode between the test cabinet and the battery. Of course, the test cabinet also integrates the equipment required for other test items.

[0054] However, in order to meet the electrical isolation requirements of high-low voltage testing, electrical isolation configuration is also required when integrating the high-voltage testing equipment and the low-voltage testing equipment in the test cabinet, resulting in a large volume of the test cabinet (typical size ≥800mm×600mm×1800mm), which is difficult to deploy flexibly, and problems such as space occupation and deployment rigidity occur. Therefore, the battery in the related art can only be subjected to EOL testing at a fixed work station, resulting in the battery needing to be stationary at the test station for a long time for various tests, with a long test beat and low test efficiency.

[0055] In addition, in the related art, since the high-voltage testing equipment and the low-voltage testing equipment are integrated in the test cabinet and share some equipment, there is a coupling situation in the high-low voltage testing hardware.

[0056] Moreover, due to the coupling of the high-low voltage testing hardware, when performing high-low voltage testing, the high-voltage testing and the low-voltage testing need to be carried out in sequence, and the low-voltage testing cannot be executed in parallel during the high-voltage testing time, resulting in insufficient utilization rate of the equipment and inefficient resource scheduling, leading to a long test beat and low test efficiency. At the same time, with the evolution of the battery production capacity towards the CTP (Cell to pack) / CTC (Cell to Chassis) integrated manufacturing mode, the serial defect of the related test process has become the key bottleneck restricting the improvement of the production line beat.

[0057] To solve at least one of the above problems, an embodiment of the present application provides a battery wireless test system, method, high-voltage test device, and low-voltage test device. The system includes: a high-voltage test device and a low-voltage test device; the high-voltage test device is used for a wired communication connection with the first port of the battery under test, and the high-voltage test device includes a first wireless communication module, and the first wireless communication module is used for a wireless communication connection with a test terminal to transmit the high-voltage test data of the battery under test measured by the high-voltage test device to the test terminal; the low-voltage test device is separately arranged from the high-voltage test device, and the low-voltage test device is used for a wired communication connection with the second port of the battery under test, and the low-voltage test device includes a second wireless communication module, and the second wireless communication module is used for a wireless communication connection with the test terminal to transmit the low-voltage test data of the battery under test measured by the low-voltage test device to the test terminal, and the first wireless communication module is also wirelessly communicatively 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.

[0058] Since the high-voltage test device and the low-voltage test device are separately arranged and each has a wireless communication function, therefore, the high-voltage test device and the low-voltage test device can be separated from the test cabinet, and further, the high-voltage test and the low-voltage test can be advanced, and the high-voltage test and the low-voltage test can be carried out simultaneously when the battery is undergoing other processes, thereby reducing the residence time of the battery at the test station and improving the test beat and test efficiency. In addition, since the high-voltage test device and the low-voltage test device are separately arranged, the high-voltage test device and the low-voltage test device can perform tests in parallel without sequentially completing the high-voltage test and the low-voltage test, further improving the test beat 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 cooperation of the high-voltage test device and the low-voltage test device can be completed, and moreover, through the master-slave control method, the scalability can be improved, the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0059] The battery wireless test system provided by the embodiment of the present application can perform high and low voltage tests on the battery, and the battery involved can be, but is 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 battery involved in the embodiment of the present application can be a battery in an electric vehicle, and it can also be a battery in other electrical equipment or energy storage equipment.

[0060] 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, and the multiple batteries are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0061] The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low electricity consumption periods and provide electrical energy to relevant users or electrical equipment during high electricity consumption periods. The energy storage system provided by 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 electrical cabinet.

[0062] The electrical equipment in the embodiments of the present application can be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric vehicles, ships, spacecraft, and so on. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0063] It should be understood that the batteries involved in the embodiments of the present application are not only limited to the above-described energy storage devices and electrical equipment, but can also be applied to all battery devices including boxes and electrical equipment using battery devices.

[0064] For the convenience of description, the battery wireless test method provided in this embodiment will be described below in combination with the scenario of calendar life test. The same applies to other test scenarios and will not be elaborated further.

[0065] Figure 1 It is a schematic structural diagram of a battery wireless test system provided by some embodiments of the present application. Figure 2 It is an application flow chart of a battery wireless test system provided by some embodiments of the present application.

[0066] Please refer to Figures 1 to 2, an embodiment of the present application provides a battery wireless test system, including: a high-voltage test device 100 and a low-voltage test device 200. The high-voltage test device 100 is used for wired communication connection with the first port 310 of the battery under test 300, and the high-voltage test device 100 includes a first wireless communication module 110. The first wireless communication module 110 is used for wireless communication connection with the test terminal 400 to transmit the high-voltage test data of the battery under test 300 measured by the high-voltage test device 100 to the test terminal 400; the low-voltage test device 200 is separately arranged from the high-voltage test device 100, and the low-voltage test device 200 is used for wired communication connection with the second port 320 of the battery under test 300. The low-voltage test device 200 includes a second wireless communication module 310. The second wireless communication module 210 is used for wireless communication connection with the test terminal 400 to transmit the low-voltage test data of the battery under test 300 measured by the low-voltage test device 200 to the test terminal 400. And the first wireless communication module 110 is also wirelessly communication-connected with 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.

[0067] The battery wireless test system provided in this embodiment can be used to perform at least part of the EOL test of the battery under test. It can be understood that the EOL test is carried out after the battery is assembled and before leaving the factory, aiming to make the product meet the design standards and safety specifications through multi-dimensional electrical performance tests and functional verifications. The battery wireless test system can be used to implement high and low voltage tests in the EOL test, and it can include safety regulation tests, instrument tests, and communication tests according to function classification. According to the voltage test level, it includes high-voltage test and low-voltage test.

[0068] Among them, the battery under test 300 can be a battery that needs to perform an EOL test. It can be understood that the battery under test 300 can have the complete electrical functions of the battery, so that relevant test items of the EOL test can be carried out. However, the structural integrity of the battery under test 300 is not specifically limited in this embodiment. For example, the battery under test 300 can be a completely assembled battery, or it can also be an incompletely assembled battery. For example, the battery can be without non-functional components such as the upper cover of the battery. Although non-functional components affect the structural integrity of the battery, they do not affect the function of the battery, so that the EOL test can be carried out.

[0069] The battery wireless test system provided by this embodiment can perform high-voltage tests and low-voltage tests on the battery under test 300. The high-voltage tests can include test items such as high-voltage sampling and relay function detection, and the low-voltage tests can include test items such as CAN communication and SOC calibration. The CAN communication test is one type of battery low-voltage communication tests, mainly used to verify that the CAN bus communication function of the BMU (Battery Management Unit) meets the design requirements.

[0070] The system provided by this embodiment can include a high-voltage test device 100 and a low-voltage test device 200. The high-voltage test device 100 can perform high-voltage tests, and the low-voltage test device 200 can perform low-voltage tests.

[0071] It can be understood that the battery under test 300 can have a first port 310 and a second port 320. The first port 310 can be used to output high-voltage signals, and the second port 320 can be used to output low-voltage signals. The first port 310 and the second port 320 can be external interfaces of the battery itself, or can also be test interfaces specially set for testing, which can be specifically set according to the actual situation. In addition, the first port 310 is a general term for the interfaces that the high-voltage test device 100 needs to connect to, not referring to a physical interface. It can include one or more interfaces with different functions. These interfaces can be set as an integrated large interface or multiple independent interfaces, which can be specifically set according to the actual situation. The second port 320 is a general term for the interfaces that the low-voltage test device 200 needs to connect to, not referring to a physical interface. It can include one or more interfaces with different functions. These interfaces can be set as an integrated large interface or multiple independent interfaces, which can be specifically set according to the actual situation. 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.

[0072] 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 through a cable. Further, the high-voltage test device 100 can be quickly connected to the first port 310 through a plug-in terminal.

[0073] In addition, a first wireless communication module 110 may be provided in the high-voltage test device 100. The first wireless communication module may be a structure capable of implementing wireless communication. Among them, 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 may perform wireless communication with the test terminal 400. The test terminal 400 may be a terminal device such as a host computer that realizes the issuance of test instructions and data processing. When the high-voltage test device 100 is connected to the battery under test, the measured high-voltage test data may be uploaded to the test terminal 400 through 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 can be understood that the communication between the first wireless communication module 110 and the test terminal 400 may be direct communication or indirect communication. For example, the high-voltage test data may be directly sent from the first wireless communication module 110 to the test terminal 400, or may be forwarded to the test terminal 400 by other devices.

[0074] The low-voltage test device 200 may be connected to the second port 320 in a wired manner. For example, the low-voltage test device 200 may be connected to the second port 320 in a wired manner such as a cable. Further, the low-voltage test device 200 may be quickly connected to the second port 320 through a plug-in terminal.

[0075] In addition, a second wireless communication module 210 may be provided in the low-voltage test device 200. The second wireless communication module may be a structure capable of implementing wireless communication. Among them, 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 may perform wireless communication with the test terminal 400. When the low-voltage test device 200 is connected to the battery under test, the measured low-voltage test data may be uploaded to the test terminal 400 through 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 can be understood that the communication between the second wireless communication module 210 and the test terminal 400 may be direct communication or indirect communication. For example, the low-voltage test data may be directly sent from the second wireless communication module 210 to the test terminal 400, or may be forwarded to the test terminal 400 by other devices.

[0076] In this embodiment, the high-voltage test device 100 and the low-voltage test device 200 are separately provided, that is, the two are physically separated from each other and each can be an independent device, so that they can be independently installed and tested accordingly.

[0077] In some embodiments, when a certain high-voltage test needs to be performed, the test terminal 400 can generate a first test instruction corresponding to the high-voltage test item. 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 a 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 through the first wireless communication module 110.

[0078] When a certain low-voltage test needs to be performed, the test terminal 400 can generate a second test instruction corresponding to the low-voltage test item. Then, the test terminal 400 can 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 a 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 through the second wireless communication module 210.

[0079] In this embodiment, since the high-voltage test device 100 and the low-voltage test device 200 are separately arranged, the two can be respectively connected to the battery under test as an independent device, 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-low voltage tests at the test station where the test cabinet is located, so that the high-low voltage tests can be advanced, which will be explained below with reference to the drawings.

[0080] Please refer to Figure 2 , in a specific test process flow, it can include steps S501 to step S506.

[0081] Step S501, installation of the battery wireless test system. When the battery under test 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 under test. This step can be completed manually or through equipment automation.

[0082] Step S502, after the test terminal 400 detects that the battery wireless test system is installed, it starts the wireless test program to perform high-voltage testing and low-voltage testing. It can be understood that since the high-voltage test device and the low-voltage test device are separately arranged, the two can respectively perform some independent test item tests. Of course, the two can also be cooperatively controlled to implement the testing of complex test items. It can be understood that after starting the wireless test, the high-voltage test device and the low-voltage test device can flow to the remaining processes (processes 1 to 3) in sequence along with the battery to be tested for processing of other processes. At the same time, the high-voltage test device and the low-voltage test device will complete part of the EOL tests (high-voltage test and low-voltage test) without affecting other processes.

[0083] In some embodiments, processes 1 to 3 can be steps such as the installation of the upper cover of the battery to be tested and the installation of the upper cover screws.

[0084] Step S503, when the wireless test ends, the high-voltage test device and the low-voltage test device can wirelessly transmit the high and low voltage test results to the test terminal 400 through their respective wireless communication modules for judgment and result uploading.

[0085] At the same time, after the wireless test ends, the high-voltage test device 100 and the low-voltage test device 200 can be disassembled, and the battery to be tested can continue to be transported to the test station for EOL testing.

[0086] Step S504, when the battery to be tested arrives at the test station, the remaining part of the EOL test can then be carried out. Specifically, the remaining EOL test items after removing the high-voltage test and the low-voltage test can be tested. Since the high-voltage test and the low-voltage test have been completed in the previous process, the time for the EOL test carried out at the test station can be greatly reduced, the test efficiency can be improved, and thus the manufacturing efficiency of the production line can be enhanced. After the test in step S504 is completed, the battery can be transported to the next station for the detection in step S505.

[0087] Step S505, DCR (DC Resistance) detection and helium detection can be carried out.

[0088] Step S506, it can be understood that after the wireless test is completed, the disassembled high-voltage test device and the low-voltage test device can flow back to step S501 to repeat the wireless test of the next battery to be tested.

[0089] It can be understood that in this embodiment, since the high-voltage test device and the low-voltage test device are not integrated in the test cabinet and are separately arranged, the volume of the battery wireless test system is simplified, and the miniaturization of the wireless test can be achieved. At the same time, since the wireless communication modules are built into the high-voltage test device and the low-voltage test device respectively, the wirelessization of the high-voltage test and the low-voltage test can be realized. Through miniaturization and wirelessization, the space constraint can be broken through and flexible deployment can be achieved. That is, the battery wireless test system can perform parallel high- and low-voltage tests while not interfering with the normal manufacturing of other workstations or the battery transportation, so that at least some of the test items (high-voltage test and low-voltage test) of the test workstation can be advanced, the test items of the test workstation are reduced, and the test efficiency is improved. Moreover, since the high-voltage test device and the low-voltage test device are independent of the test cabinet, the volume of the test cabinet can also be reduced.

[0090] In addition, in the high- and low-voltage tests in the related art, high-voltage sampling needs to be carried out first, and then the low-voltage CAN communication test is started after completion, resulting in a long battery test cycle. However, in this embodiment, through separate arrangement, the situation of hardware coupling in high- and low-voltage tests can be improved, the serial interlock in high- and low-voltage tests can be broken through, the test process can be reconstructed, and the parallel execution of high-voltage test and low-voltage test can be realized, so that resources can be reasonably allocated, resource utilization rate can be improved, and at the same time, the test beat can be shortened and the test efficiency can be improved. It has been verified that the test beat can be shortened by more than 20%.

[0091] In addition, the test cabinet in the related art needs to be configured with long wire harnesses. In this embodiment, wireless communication is achieved through the first wireless communication module and the second wireless communication module, the dependence on wire harnesses can be eliminated, and more than 90% of physical cables can be replaced. Moreover, since the high-voltage test device and the low-voltage test device are separately arranged, both can be connected to different interfaces of the battery under test through short wire harnesses, and the wire harness length can be further reduced compared with the test cabinet in the related art.

[0092] In some embodiments, power supply batteries can be respectively configured in the high-voltage test device 100 and the low-voltage test device 200 to supply power to each component.

[0093] Continue to refer to Figure 1 , the first wireless communication module 110 can also be wirelessly communicatively connected to the second wireless communication module 210, so as to achieve cooperative control between the two. In this embodiment, the first test instruction represents the test instruction of a certain test item in the high-voltage test, and the second test instruction represents the test instruction of a certain test item in the low-voltage test.

[0094] In some embodiments, the high-voltage test device 100 can serve as the main test control device, and the low-voltage test device 200 can serve as the 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 first test instruction can be directly sent from the test terminal to the first wireless communication module 110 and directly received by the high-voltage test device 100, so as to directly perform the high-voltage test. The high-voltage test result can also be directly sent to the test terminal 400 through the first wireless communication module 110.

[0095] The second test instruction can be sent from the test terminal 400 to the first wireless communication module 110, and thus 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 as to be received by the low-voltage test device 200, and then perform the low-voltage test. The result of the low-voltage test can be directly sent to the test terminal 400, or alternatively, it can be forwarded by the high-voltage test device.

[0096] In some embodiments, the high-voltage test device 100 can be the slave test control device, and the low-voltage test device 200 can serve as the main test control device. The high-voltage test device 100 can communicate with the test terminal through the low-voltage test device 200. For example, the second test instruction can be directly sent from the test terminal to the second wireless communication module 210 and directly received by the low-voltage test device 200, so as to directly perform the low-voltage test. The low-voltage test result can also be directly sent to the test terminal 400 through the second wireless communication module 210.

[0097] The first test instruction can be sent from the test terminal 400 to the second wireless communication module 210, and thus first received by the low-voltage test device. 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 as to be received by the high-voltage test device 100, and then perform the high-voltage test. The result of the high-voltage test can be directly sent to the test terminal 400, or alternatively, it can be forwarded by the low-voltage test device.

[0098] It can be understood that in the high- and low-voltage tests, some test items can be independently completed by the high-voltage test device, and some test items can be independently completed by the low-voltage test device. These two parts of the tests can be performed in parallel. Of course, there are also some test items that require the collaborative control of the high-voltage test device and the low-voltage test device. For example, the test of high-voltage sampling.

[0099] The following takes the high-voltage test device 100 as the slave test control device and the low-voltage test device 200 as the master test control device as an example to illustrate the high-voltage sampling test. It can be understood that for the safety of high voltage, part of the high-voltage circuit is controlled by the low-voltage circuit. When performing the 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 relay in the high-voltage circuit to close the low-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 information that the relay is closed and the high-voltage test instruction to the high-voltage test device, so that the high-voltage test device can perform high-voltage sampling, and the test data of the high-voltage sampling can be directly sent by the high-voltage test device to the test terminal.

[0100] 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.

[0101] 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 cooperation of the high-voltage test device and the low-voltage test device can be completed. Moreover, through the master-slave control method, the scalability can be improved, the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0102] Figure 3 For Figure 1 the structural schematic diagram of the high-voltage test device in Figure 1 and Figure 3 refer to, the high-voltage test device 100 further includes: a first relay module 120. The first end of the first relay module 120 is electrically connected to the first wireless communication module 110, the second end of the first relay module 120 is electrically connected to the first end of at least one first resistor 130, and the second end of at least one first resistor 130 is electrically connected to the first port 310. The first relay module 120 is used to connect at least one first resistor 130 to the battery under test 300.

[0103] In this embodiment, the high-voltage test device 100 further 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 as to realize the communication between the two. For example, control the opening and closing of the first relay module 120 according to the test instruction received by the first wireless communication module, or send the test data related to the first relay module 120 to the test terminal 400 through the first wireless communication module, etc.

[0104] The second terminal of the first relay module 120 can be electrically connected to the first port 310 through 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 value can be between 0.5M - 2M. For example, it can be 0.5M, 0.6M, 0.8M, 1M, 1.2M, 1.4M, 1.6M, 1.8M, 2M, etc.

[0105] It can be understood that at least one first resistor 130 can be provided in the high-voltage test device. The first end of each first resistor 130 is connected to the second terminal of the first relay module 120, and the second end of each first resistor 130 is connected to the first port. When multiple first resistors 130 are provided, the multiple first resistors 130 can be connected in parallel between the first relay module 120 and the first port 310.

[0106] In this embodiment, the first relay module 120 can be composed of at least one switch circuit. The switch circuit can be used to connect one or more first resistors 130 to the first port, so that the first resistor can be connected to the battery under test 300, and then the first resistor can be connected into the test circuit. It can be understood that the connection mode between the first resistor and the battery under test 300 in this embodiment can be in series. Of course, the two can also be connected in parallel.

[0107] It can be understood that the first end and the second end of the above-mentioned first relay module 120 refer to interfaces of different types or functions of the first relay module 120, and one or several sub-ports can also be provided at each end. Specifically, it can be set according to the actual situation. In addition, the first end, the second end, the third end, etc. of each of the following modules can also be explained by referring to the respective ends of the first relay module 120, and will not be elaborated here.

[0108] It can be understood that for some high-voltage test items, such as voltage test, there may be a large error in direct measurement. By connecting the first resistor to the measurement circuit, due to the fixed resistance value of the first resistor, by measuring the voltage across the first resistor, the accuracy of the test result can be improved. In addition, in the related art, if a resistor needs to be connected to the battery under test, an additional resistance box needs to be connected, resulting in equipment stacking and high operation complexity. In this embodiment, the first resistor is integrated inside the high-voltage test device, simplifying the equipment stacking and reducing the operation complexity.

[0109] According to some embodiments of the present application, continue to refer to Figure 3 , the high-voltage test device 100 may further include: a first voltage measurement module 140. The first end of the first voltage measurement module 140 is electrically connected to the first wireless communication module 110, and the second end of the first voltage measurement module 140 is electrically connected to the first port 310. The first voltage measurement module 140 is used to measure the voltage of the first port 310.

[0110] 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.

[0111] The first voltage measurement module 140 can be used to detect the voltage between two pins in the measurement loop connected through the first port, and its range can be 0 - 1000V.

[0112] It can be understood that in the related art, it is necessary to externally connect instruments such as a multimeter to the battery under test to complete the voltage special test. However, this method will cause equipment stacking and high operation complexity. In this embodiment, by building a first voltage measurement module in the high-voltage test device, the equipment stacking and operation complexity can be simplified, and the coverage of high and low voltage wireless tests can be enriched.

[0113] According to some embodiments of the present application, the high-voltage test device 100 further 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. 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.

[0114] In this embodiment, the first voltage measurement module 140 can be indirectly electrically connected to the first wireless communication module 110 through the first signal conversion module 150.

[0115] It can be understood that when the signal type of the first voltage measurement module is the same as that of the first wireless communication module 110, the first voltage measurement module can be directly electrically connected to the first wireless communication module to realize the mutual transmission of signals. However, when the signal type of the first voltage measurement module is different from that of the first wireless communication module 110, a first signal conversion module 150 needs to be set between the two. The first signal conversion module 150 can convert the signal type of the first voltage measurement module and the signal type of the first wireless communication module 110, thereby realizing communication between the two.

[0116] The type of the first signal conversion module 150 can be various, and can be specifically set according to the type of the signal to be converted. For example, the first signal conversion module can be a 485-to-232 signal conversion module, which is used to implement two-way communication between the RS485 communication interface and the RS232 communication interface.

[0117] In this embodiment, through the first signal conversion module, the signal transmission between the first voltage measurement module and the first wireless communication module can be realized, which is beneficial to directly use the high-voltage test device for voltage measurement.

[0118] According to some embodiments of the present application, continue to refer to Figure 3 , at least one first voltage measurement line 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 line 160 is used to be electrically connected to at least one to-be-tested high-voltage port of the to-be-tested battery 300 in one-to-one correspondence through the first port 310.

[0119] In this embodiment, as Figure 3 , the first voltage measurement module can be connected to the first port through multiple first voltage measurement lines 160. It can be understood that according to the types of the to-be-tested batteries, the first port 310 can include at least one to-be-tested high-voltage port of the to-be-tested battery, for example, it can be 1, 2, or 3 to-be-tested high-voltage ports.

[0120] Among them, the to-be-tested high-voltage port can be a front-drive high-voltage port, a rear-drive high-voltage port or a fast-charge high-voltage port, and the first port 310 can include at least one of the front-drive high-voltage port, the rear-drive high-voltage port and the fast-charge high-voltage port.

[0121] The number of the first voltage measurement lines 160 can be the same as the number of the to-be-tested high-voltage ports included in the first port 310. When multiple first voltage measurement lines 160 are provided, these voltage measurement lines can be connected in parallel. When there is only one to-be-tested high-voltage port, the first voltage measurement module can be directly connected to it through the first port, so as to complete the voltage detection.

[0122] When the first port 310 includes 3 to-be-tested high-voltage ports, namely the front-drive high-voltage port, the rear-drive high-voltage port and the fast-charge high-voltage port, the number of the first voltage measurement lines 160 can be 3, and each first voltage measurement line can be electrically connected to a to-be-tested high-voltage port, so that the first voltage measurement module 140 can test each to-be-tested high-voltage port, improving the test coverage.

[0123] In addition, a first standby measurement line may be provided between the second end of the first voltage measurement module 140 and the first port 310. The first standby measurement line may be connected in parallel with multiple first voltage measurement lines. When a first voltage measurement line fails, measurement can be performed through the first standby test line, improving the redundancy of the test.

[0124] As Figure 3 shown in, the first voltage measurement module 140 may be connected to the first port through 4 lines, where three lines are three first voltage measurement lines respectively connected to the front-drive high-voltage port, the rear-drive high-voltage port, and the fast-charge high-voltage port, and the other line may be the first standby test line.

[0125] It can be understood that the above embodiments achieve the test of multiple high-voltage ports to be measured by setting multiple first voltage measurement lines in a high-voltage test device. In other embodiments, the test of multiple high-voltage ports to be measured can also be achieved by setting multiple high-voltage test devices respectively, which will be specifically described below.

[0126] In some other embodiments, the battery wireless test system may include at least one high-voltage test device 100. The first voltage measurement modules 140 in at least one high-voltage test device 100 are respectively used to be electrically connected to at least one high-voltage port to be measured of the battery to be tested through the first port 310 in a one-to-one correspondence.

[0127] It can be understood that the number of high-voltage test devices in the battery wireless measurement system may be the same as the number of high-voltage ports to be measured.

[0128] When the first port 310 includes 3 high-voltage ports to be measured, namely the front-drive high-voltage port, the rear-drive high-voltage port, and the fast-charge high-voltage port, the battery wireless measurement system may include 3 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 measured through a first voltage measurement line. Of course, in order to improve the reliability of the test, a first standby test line may also be connected in parallel to the first voltage measurement line in each high-voltage test device.

[0129] The above embodiments can measure multiple high-voltage ports to be measured of the battery to be tested 300 by setting multiple first voltage test lines or multiple high-voltage test devices, and the test coverage is high.

[0130] Figure 4 For Figure 1 the structural schematic diagram of the medium and low voltage test device; please refer to Figure 4, according to some embodiments of the present application, the low-voltage test device 200 may further include: a second relay module 220. The first end of the second relay module 220 is electrically connected to the second wireless communication module 210, and the second end of the second relay module 220 is electrically connected to the second port 320. The second relay module 220 is used to control the power supply state of the BMU in the battery under test 300.

[0131] In this embodiment, the low-voltage test device 200 further 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 as to enable communication between the two. 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.

[0132] The second end of the second relay module 220 can be electrically connected to the second port 320. For example, it can be connected to the second port 320 through the power supply line 270, and specifically can be connected to the BMU through the second port 320.

[0133] It can be understood that in different test items, the BMU can have different power supply states. For example, in some test items where the BMU needs to participate, power needs to be supplied to the BMU, while in some test items where the BMU does not need to participate, the BMU needs to be powered off. The second relay module 220 can be composed of at least one switch circuit. The second relay module 220 can be used to control the power supply state of the BMU. Specifically, the second relay module 220 can be connected to the BMU through 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 4, respectively corresponding to connecting to three power-on / off lines and one standby power supply line of the BMU.

[0134] In this embodiment, the second relay module 220 can be used to achieve the on / off of each path in the BMU, so as to complete different test items and improve the test coverage.

[0135] 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 at least one second resistor 230 to the battery under test 300.

[0136] The third terminal of the second relay module 220 can be electrically connected to the second port 320 through 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 value can be between 0.5k and 2k. For example, it can be 0.5k, 0.6k, 0.8k, 1k, 1.2k, 1.4k, 1.6k, 1.8k, 2k, etc.

[0137] It can be understood that at least one second resistor 230 can be provided in the low-voltage test device. The first end of each second resistor 230 is connected to the third terminal of the second relay module, and the second end of each second resistor is connected to the second port. When multiple second resistors 230 are provided, the multiple second resistors 230 can be connected in parallel between the second relay module 220 and the second port 320.

[0138] In this embodiment, the second relay module 220 can be composed of at least one switch circuit. The switch circuit can be used to connect one or more second resistors 230 to the second port, so that the second resistor can be connected to the battery under test 300, and then the second resistor can be connected into the test circuit. In this embodiment, the connection method between the second resistor and the battery under test 300 can be in series. Of course, the two can also be in parallel.

[0139] It can be understood that for some low-voltage test items, such as voltage test, there may be large errors in direct measurement. By connecting the second resistor to the measurement circuit, due to the fixed resistance value of the second resistor, the accuracy of the test result can be improved by measuring the voltage across the second resistor. In addition, in the related art, if a resistor needs to be connected to the battery under test, an additional resistance box needs to be connected, resulting in equipment stacking and high operation complexity. In this embodiment, the first resistor is integrated inside the low-voltage test device, simplifying the equipment stacking and reducing the operation complexity.

[0140] According to some embodiments of the present application, the low-voltage test device 200 may further include: a second voltage measurement module 240. The first end of the second voltage measurement module 240 is electrically connected to the second wireless communication module 210, and the second end of the second voltage measurement module 240 is electrically connected to the second port 320. The second voltage measurement module 240 is used to measure the voltage of the second port.

[0141] In this embodiment, the 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 be electrically connected to the second port to measure the voltage of the second port, so as to implement test items such as voltage sampling.

[0142] The second voltage measurement module 240 can be used to detect the voltage between two pins in a test loop connected through the second port, and its measurement range can be 0 - 50V. The second voltage measurement module can also be connected to the second port through multiple parallel second voltage measurement lines, and the number of lines can be set according to actual situations. For example, 2, 3, 4, or 5 lines can be set, and one of them can be a spare line.

[0143] It can be understood that in the related art, it is necessary to externally connect instruments such as a multimeter to the battery under test to complete the voltage special test. However, this method will cause equipment stacking and high operation complexity. In this embodiment, by integrating the second voltage measurement module into the low - voltage test device, the equipment stacking and operation complexity can be simplified, and the coverage of high - and low - voltage wireless testing can be enriched.

[0144] According to some embodiments of the present application, the low - voltage test device 200 may further include: a resistance measurement module 250. The first end of the resistance measurement module 250 is electrically connected to the second wireless communication module 210, and the second end of the resistance measurement module 250 is electrically connected to the second port 320. The resistance measurement module 250 is used to detect the resistance of the second port 320.

[0145] In this embodiment, the resistance measurement module 250 is integrated into the low - voltage test 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 be electrically connected to the second port to measure the resistance of the second port, thereby realizing test items such as resistance sampling.

[0146] The resistance measurement module can also be connected to the second port through multiple parallel lines, and the number of lines can be set according to actual situations. For example, 2, 3, or 4 lines can be set, and one of them can be a spare line.

[0147] It can be understood that in the related art, it is necessary to externally connect devices such as a multimeter to the battery under test to complete the resistance special test. However, this method will cause equipment stacking and high operation complexity. In this embodiment, by integrating the resistance measurement module into the low - voltage test device, the equipment stacking and operation complexity can be simplified, and the coverage of high - and low - voltage wireless testing can be enriched.

[0148] It can be understood that by setting the first voltage measurement module and the first resistor in the high - voltage device, and setting the second voltage measurement module, the second resistor, and the resistance measurement module in the low - voltage device, multi - dimensional instrument - level test functions can be integrated in the battery wireless test system, that is, the multimeter function (measuring voltage and measuring resistance) and the series - parallel functions of resistors (the first resistor and the second resistor), improving the test coverage, solving the problem of equipment stacking, and reducing the operation complexity.

[0149] According to some embodiments of the present application, the low-voltage test device 200 further 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. The second signal conversion module 260 is configured to perform signal conversion on the data transmitted between the second voltage measurement module 240 and the second wireless communication module 210, so as to implement 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. The second signal conversion module 260 is further configured to perform signal conversion on the data transmitted between the resistance measurement module 250 and the second wireless communication module 210, so as to implement communication between the resistance measurement module 250 and the second wireless communication module 210.

[0150] In this embodiment, the first ends of both the second voltage measurement module 240 and the resistance measurement module 250 are connected to the second signal conversion module 260, so as to be indirectly electrically connected to the second wireless communication module 210 through the second signal conversion module 260.

[0151] It can be understood that when the signal types of the second voltage measurement module or the resistance measurement module are respectively 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 realize the mutual transmission of signals. However, when the signal type of the second voltage measurement module or the resistance measurement module is inconsistent with the signal type of the second wireless communication module 210, a second signal conversion module 260 needs to be provided in the middle. 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) and the signal type of the second wireless communication module 210, so as to realize communication between the two.

[0152] There can be various types of the second signal conversion module 260, which can be specifically set according to the type of the signal to be converted. For example, the second signal conversion module can be a 485-to-232 signal conversion module, which is used to implement two-way communication between the RS485 communication interface and the RS232 communication interface.

[0153] In this embodiment, through the second signal conversion module, 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 can be realized, which is beneficial to directly using the low-voltage test device to measure voltage and resistance.

[0154] According to some embodiments of the present application, the low-voltage test device 200 may further include: a test communication module 280. 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. The test communication module 280 is used to test the communication function of the battery 300 to be tested.

[0155] It can be understood that the test communication module 280 can be used to test the low-voltage communication function. For different communication protocols, it can be different modules. For example, it can be a CANFD (Controller Area Network with Flexible Data-Rate, Can2.0) module, that is, a module that implements CAN communication using CAN2.0, so as to test the CAN communication function of the BMU. Of course, it can also be a test communication module using other communication protocols, such as Ethernet / IP (Ethernet / Industrial Protocol) or Profibus (Process Field Bus, open fieldbus) protocol, etc. Specifically, it can be set according to the communication protocol of the BMU.

[0156] In this embodiment, the test communication module 280 can be connected to the second port through three test lines. These three test lines can be used to test the communication conditions of ACAN (Application CAN), SCAN (System CAN), and CHCAN (Check CAN) respectively. Among them, ACAN is the communication interface between the battery and the vehicle, SCAN is the interface for writing programs or in-factory testing, and CHCAN is the handshake signal interface for power-on, etc. The test communication module 280 can test the above communication conditions. In this embodiment, the resistance measurement module can also be connected to the second port through 4 lines, of which 3 can be used to measure the resistance of ACAN, SCAN, and CHCAN respectively, and the other 1 can be a spare line.

[0157] Of course, the number of test lines connected in parallel in the test communication module 280 and the test functions are not limited to the above three. It can only include at least one of them, or there can be other types of tests.

[0158] In this embodiment, the test communication module 280 can test the low-voltage communication function of the battery to be tested to check whether it meets the design requirements.

[0159] In some embodiments, the first resistor and the second resistor can be implemented by a programmable series-parallel resistor array. By this means, miniaturized design of the first resistor and the second resistor can be achieved, and further the volume of the device can be compressed.

[0160] Figure 5 The following is a schematic flowchart of a battery wireless testing method provided by some embodiments of the present application. Please refer to Figure 5 Embodiments of the present application further provide a battery wireless testing method 600 for a high-voltage testing device in the battery wireless testing system in any of the above embodiments. The method 600 includes steps S610 to step S630.

[0161] Step S610: Obtain a first test instruction through the first wireless communication module 110.

[0162] Step S620: Control the battery under test to perform a high-voltage test based on the first test instruction, and obtain first test data of the high-voltage test.

[0163] Step S630: Send the first test data to the test terminal 400 through the first wireless communication module 110.

[0164] In this embodiment, the high-voltage testing device 100 can communicate with the test terminal 400 directly or indirectly through the first wireless communication module 110. It can be understood that the test terminal 400 can also be provided with a wireless communication module. Through the wireless communication connection between the first wireless communication module and the wireless communication module of the test terminal, direct communication between the high-voltage testing device 100 and the test terminal 400 can be achieved. Of course, indirect communication between the two can also be carried out through other wireless communication modules. The following takes direct communication as an example for illustration.

[0165] The first test instruction can be a control instruction for one or several high-voltage test items (the first high-voltage test). The first test instruction is generated by the test terminal, and the first test instruction can be directly sent from 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 can control the battery under test to execute the first high-voltage test corresponding to the first test instruction and obtain the first test data of the first high-voltage test. It can be understood that since the high-voltage testing device and the battery under test are connected by wire communication through the first port, the transmission of the first test instruction and the first test data can be achieved between the two.

[0166] After obtaining the first test data, the high-voltage testing device can send the data to the test terminal 400 through the first wireless communication module 110, and the test terminal 400 can analyze and judge the first test data.

[0167] In this embodiment, the high-voltage test device can communicate with the test terminal to obtain test instructions and send test results, which is beneficial to the reliable implementation of high-voltage testing.

[0168] 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 test device 200 and forwarded by the second wireless communication module 210 to the first wireless communication module 110.

[0169] In this embodiment, the first wireless communication module 110 can directly communicate with the test terminal, so as to directly obtain the first test instruction sent by the test terminal.

[0170] In some other embodiments, the high-voltage test device 100 can be a slave test control device, and the low-voltage test device 200 can be used as a master test control device. The high-voltage test device 100 can communicate with the test terminal through the low-voltage test device 200. 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 as to be received by the high-voltage test device 100, and then high-voltage testing is performed. The result of the high-voltage test can be directly sent to the test terminal 400, or it can also be forwarded by the low-voltage test device.

[0171] The method provided in this embodiment can realize communication between the high-voltage test device and the test terminal. The communication efficiency can be improved through direct communication, while the scalability can be improved through indirect communication, and the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0172] Figure 6 It is a schematic flow chart of a battery wireless test method provided for some other embodiments of the present application. Please refer to Figure 6 According to an embodiment of the present application, a battery wireless test method 700 is provided for the low-voltage test device 200 in the battery wireless test system in any of the above embodiments; the method 700 includes steps S710 to step S730.

[0173] Step S710, obtaining a second test instruction through the second wireless communication module 210.

[0174] Step S720, controlling the battery under test 300 to perform a first low-voltage test based on the second test instruction and obtaining second test data of the first low-voltage test.

[0175] Step S730: Send the second test data to the test terminal 400 through the second wireless communication module.

[0176] In this embodiment, the low-voltage test device 200 can communicate with the test terminal 400 directly or indirectly through the second wireless communication module 210. It can be understood that the test terminal 400 can also be provided with a wireless communication module. Through the wireless communication connection between the second wireless communication module and the wireless communication module of the test terminal, direct communication between the low-voltage test device 200 and the test terminal 400 can be achieved. Of course, indirect communication between the two can also be carried out through other wireless communication modules. The following takes direct communication as an example for illustration.

[0177] The second test instruction can be a control instruction for one or several low-voltage test items (the first low-voltage test). The second test instruction is generated by the test terminal and can be directly sent from the test terminal 400 to the second wireless communication module 210 and directly received by the low-voltage test device 200. After receiving the second test instruction, the low-voltage test device 200 can control the battery under test to perform the first low-voltage test corresponding to the second test instruction and obtain the second test data of the first low-voltage test. It can be understood that since the low-voltage test device and the battery under test are connected by wire communication through the second port, the transfer of the second test instruction and the second test data can be achieved between the two.

[0178] After obtaining the second test data, the low-voltage test device 200 can send this data to the test terminal 400 through the second wireless communication module 210, and the test terminal 400 can analyze and judge the second test data.

[0179] In this embodiment, the low-voltage test device can communicate with the test terminal to obtain the test instruction and send the test result, which is beneficial to the reliable progress of the low-voltage test.

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

[0181] In this embodiment, the second wireless communication module 210 can communicate directly with the test terminal, so that the second test instruction sent by the test terminal can be directly obtained.

[0182] In some other embodiments, the high-voltage test device 100 can serve as the main test control device, and the low-voltage test device 200 can serve as the 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, and thus 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 as to be received by the low-voltage test device 200, and then the low-voltage test is performed. The result of the low-voltage test can be directly sent to the test terminal 400, or alternatively, it can be forwarded by the high-voltage test device.

[0183] The method provided in this embodiment can achieve communication between the low-voltage test device and the test terminal. The communication efficiency can be improved through the direct communication method, while the scalability can be improved through the indirect communication method, and the communication complexity can be reduced, the network structure can be optimized, and the maintainability is better.

[0184] It can be understood that unless otherwise specified, the connections in various embodiments of the present application, such as electrical connections, communication connections, etc., can be either direct connection methods or indirect connection methods.

[0185] Figure 7 For the schematic diagram of the high-voltage test device provided in some other embodiments of the present application, please refer to Figure 7 , the present application embodiment provides a high-voltage test device 100. The high-voltage test device 100 is the high-voltage test device in the battery wireless test system of any one of the above; the high-voltage test device 100 includes: a first control module 170. The first control module 170 is used to obtain a first test instruction through the first wireless communication module 110; control the battery under test 300 to perform a first high-voltage test based on the first test instruction, and obtain first test data of the first high-voltage test; send the first test data to the test terminal 400 through the first wireless communication module 110.

[0186] The first control module 170 can execute steps S610 to S630 in the battery wireless test method 600. For the sake of brevity, it will not be elaborated here. It should be understood that corresponding to the embodiments of the battery wireless test method 600, the high-voltage test device 100 may further include more modules.

[0187] 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 independently arranged with the first control module 170.

[0188] Meanwhile, in some embodiments, the first control module 170 may also control the remaining modules in the high-voltage test device 100 as shown in Figure 3 , or control the transmission of instructions or test data between the various modules in Figure 3 .

[0189] Figure 8 The following is a schematic diagram of a low-voltage test device provided in some other embodiments of the present application. Please refer to Figure 8 . Embodiments of the present application provide a low-voltage test device 200. The low-voltage test device 200 is the low-voltage test device in the battery wireless test system in any of the above embodiments. The low-voltage test device 200 includes: a second control module 290. The second control module 290 is configured to obtain a second test instruction through the second wireless communication module 210; 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; and send the second test data to the test terminal 400 through the second wireless communication module 210.

[0190] The second control module 290 may be configured to execute steps S710 to S730 in the battery wireless test method 700. For the sake of brevity, details are not described herein again. It should be understood that corresponding to the embodiments of the battery wireless test method 700, the low-voltage test device 200 may further include more modules.

[0191] The second control module 290 may 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 may be integrated in the second control module 290, or the second wireless communication module 210 may be independently provided with respect to the second control module 290.

[0192] Meanwhile, in some embodiments, the second control module 290 may also control the remaining modules in the low-voltage test device 200 as shown in Figure 4 , or control the transmission of instructions or test data between the various modules in Figure 4 .

[0193] It should be noted that the functions of the various modules discussed herein may be divided into multiple modules, and / or at least some functions of multiple modules may be combined into a single module. The specific module 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 combination with the specific module). Thus, the specific module performing an action may include the specific module itself performing the action and / or another module that the specific module calls or otherwise accesses and performs the action.

[0194] It should also be understood that the various technologies described herein can be described in the general context of software, hardware components, or program modules. As described above regarding Figure 7 or Figure 8 each module can be implemented in hardware or in hardware combined with software and / or firmware. For example, these modules can be implemented as computer program code / instructions 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 / circuits can include an integrated circuit chip (which includes one or more components such as 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 other circuits), and can optionally execute the received program code and / or include embedded firmware to perform functions.

[0195] Figure 9 Schematic diagram of a computing device provided for some embodiments of the present application to implement the battery wireless test method. As Figure 9 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 that, when executed by the at least one processor 805 alone or jointly, cause the computing device to execute the method of any of the above embodiments.

[0196] The computing device

[0197] 800 may include at least one processor 805, a memory 807, (multiple) communication interfaces 802, a display device 801, other input / output (I / O) devices 803, and one or more mass storage devices 806 that can communicate with each other, such as via a bus 804 or other suitable connections. Instructions are stored on the memory 807 that, when executed by the processor 805, cause the processor 805 to execute the battery wireless test method 600 or the battery wireless test method 700 as in the above embodiments.​The processor 805 can be a single processing unit or multiple processing units, and all processing units can include one or more computing units or multiple cores. The processor 805 can 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 operation instructions. Among other capabilities, the processor 805 can be configured to obtain and execute computer-readable instructions stored in the memory 807, the mass storage device 806, or other computer-readable media, such as the program code of the operating system 808, the program code of the application 809, the program code of other programs 810, etc.

[0198] The memory 807 and the mass storage device 806 are examples of computer-readable storage media for storing instructions that are executed by the processor 805 to implement the various functions described above. For example, the memory 807 generally can include both volatile and non-volatile memories (e.g., RAM, ROM, etc.). In addition, the mass storage device 806 generally can include a hard disk drive, a solid-state drive, removable media, including external and removable drives, memory cards, flash memory, floppy disks, optical discs (e.g., CD, DVD), storage arrays, network-attached storage, storage area networks, etc. The memory 807 and the mass storage device 806 can both be collectively referred to as memory or computer-readable storage media in this article, and can be non-transitory media capable of storing computer-readable, processor-executable program instructions as computer program code that can be executed by the processor 805 as a specific machine configured to implement the operations and functions described in the examples in this article.

[0199] Multiple programs can be stored on the mass storage device 806. These programs include the operating system 808, one or more applications 809, other programs 810, and program data 811, and they can be loaded into the memory 807 for execution. Examples of such applications or program modules can include, for example, computer program logic (e.g., computer program code or instructions) for implementing the following components / functions: the high-voltage test device 100 (including the first control module 170), the battery wireless test method 600 (including any suitable steps of the battery wireless test method 600), the low-voltage test device 200 (including the second control module 290), the battery wireless test method 700 (including any suitable steps of the battery wireless test method 700), and / or additional embodiments described in this article.

[0200] Although in Figure 9is illustrated as being stored in the memory 807 of the computing device 800, but the 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 medium accessible to the computing device 800.

[0201] One or more communication interfaces 802 are used to exchange data with other computing devices, such as via a network, a direct connection, and 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 (such as IEEE 802.11 wireless LAN (WLAN)) wireless interface, a Worldwide Interoperability for Microwave Access (WiMAX) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth™ interface, a Near Field Communication (NFC) interface, etc. 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, and the like. The communication interface 802 may also provide communication with external storage devices (not shown), such as in a storage array, a network-attached storage, a storage area network, etc.

[0202] In some examples, a display device 801, such as a monitor, may be included for displaying information and images to a user. Other I / O devices 803 may be devices that receive various inputs from a user and provide various outputs to the user, and may include touch input devices, gesture input devices, cameras, keyboards, remote controls, mice, printers, audio input / output devices, and the like.

[0203] The techniques described herein may 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 may also be implemented in whole or in part using a distributed system on a "cloud". The cloud includes and / or represents a platform for resources. The platform abstracts the underlying functionality of the hardware (e.g., servers) and software resources of the cloud. Resources may include applications and / or data that may be used when performing computing processing on servers remote from the computing device 800. Resources may also include services provided via the Internet and / or via a subscriber network, such as a cellular or Wi-Fi network. The platform may abstract the resources and functionality to connect the computing device 800 with other computer devices. Thus, the implementation of the functionality described herein may be distributed throughout the cloud. For example, the functionality may be implemented partially on the computing device 800 and partially via a platform that abstracts the functionality of the cloud.

[0204] The embodiments of the present application also provide a computer-readable storage medium, on which instructions are stored. When the instructions are executed alone or jointly by one or more processors of a computing device, the computing device is caused to execute the methods in any of the above embodiments.

[0205] A computer-readable storage medium includes volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. The computer-readable storage medium includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD), or other optical storage devices, magnetic cartridges, magnetic tapes, magnetic disk storage devices or other magnetic storage devices, or any other non-transmissive medium that can be used to store information for access by a computer device.

[0206] The embodiments of the present application provide a computer program product, including instructions. When the instructions are executed alone or jointly by one or more processors of a computing device, the computing device is caused to execute the methods in any of the above embodiments.

[0207] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified.

[0208] In a specific embodiment, please refer to Figures 1 to 4, an embodiment of the present application provides a battery wireless test system, including: a high-voltage test device 100 and a low-voltage test device 200. The high-voltage test device 100 is used for wired communication connection with the first port 310 of the battery under test 300, and the high-voltage test device 100 includes a first wireless communication module 110. The first wireless communication module 110 is used for wireless communication connection with the test terminal 400 to transmit the high-voltage test data of the battery under test 300 measured by the high-voltage test device 100 to the test terminal 400; the low-voltage test device 200 is separately arranged from the high-voltage test device 100, and the low-voltage test device 200 is used for wired communication connection with the second port 320 of the battery under test 300. The low-voltage test device 200 includes a second wireless communication module 310, and the second wireless communication module 210 is used for wireless communication connection with the test terminal 400 to transmit the low-voltage test data of the battery under test 300 measured by the low-voltage test device 200 to the test terminal 400. And the first wireless communication module 110 is also wirelessly communication-connected with 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.

[0209] 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 through 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 can be understood that each module in the high-voltage test device can be connected to different function sub-ports in the first port.

[0210] The low-voltage test device further 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, and it 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 through the second signal conversion module, and the second voltage measurement module and the resistance measurement module are also connected to the second port. It can be understood that each module in the low-voltage test device can be connected to different function sub-ports in the second port.

[0211] In this embodiment, since the high-voltage test device and the low-voltage test device are not integrated in the test cabinet and are separately arranged, the volume of the battery wireless test system is simplified, and the miniaturization of wireless testing can be achieved. At the same time, since wireless communication modules are built into the high-voltage test device and the low-voltage test device respectively, the high-voltage test and the low-voltage test can be wirelessized. Through miniaturization and wirelessization, the space constraint can be broken through, and flexible deployment can be realized. That is, the battery wireless test system can perform parallel high- and low-voltage tests without disturbing the normal manufacturing or battery transportation of other workstations, so that at least some test items (high-voltage test and low-voltage test) of the test workstation can be advanced, the test items of the test workstation are reduced, and the test efficiency is improved. Moreover, since the high-voltage test device and the low-voltage test device are independent of the test cabinet, the volume of the test cabinet can also be reduced.

[0212] In addition, in the high- and low-voltage tests in the related art, high-voltage sampling needs to be carried out first, and then the low-voltage CAN communication test is started after completion, resulting in a long battery test cycle. However, in this embodiment, through separate arrangement, the situation of hardware coupling in high- and low-voltage tests can be improved, the serial interlock of high- and low-voltage tests can be broken through, the test process can be reconstructed, and the parallel execution of high-voltage test and low-voltage test can be achieved, so that resources can be reasonably allocated, resource utilization rate can be improved, and at the same time, the test beat can be shortened and the test efficiency can be improved. It is verified that the test beat can be shortened by more than 20%.

[0213] In addition, the test cabinet in the related art needs to be configured with long wire harnesses. In this embodiment, wireless communication is achieved through the first wireless communication module and the second wireless communication module, which can relieve the dependence on wire harnesses and replace more than 90% of physical cables. Moreover, since the high-voltage test device and the low-voltage test device are separately arranged, both can be connected to different interfaces of the battery under test through short wire harnesses, and compared with the test cabinet in the related art, the wire harness length can be further reduced.

[0214] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling 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.

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: The high voltage testing device further comprises: A first voltage measuring module, wherein a first end of the first voltage measuring module is electrically connected to the first wireless communication module, a 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.

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: The low voltage testing device further comprises: A second voltage measuring module, wherein a first end of the second voltage measuring module is electrically connected to the second wireless communication module, a 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.

9. The battery wireless testing system according to claim 8, characterized in that: The low voltage testing device further comprises: A resistance measuring module, wherein 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.

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.

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