Test system and test method thereof

Abstract

The invention relates to the technical field of battery testing, and particularly discloses a testing system and a testing method.The testing system comprises a testing circuit board, testing equipment, a lower computer and an upper computer, the testing circuit board is provided with a testing circuit, and the testing circuit comprises a plurality of main circuits arranged side by side; one end of each main circuit is used for being connected with a positive electrode or a negative electrode of each battery monomer of the battery module, and the other end of each main circuit is connected with a first branch and a second branch; each first branch is provided with a control switch, and each second branch is provided with a control switch; the lower computer is electrically connected with the control switch so as to control the first branch connected with one of the main circuits to be electrically conducted with the positive electrode of the test equipment, and the second branch connected with the other main circuit to be electrically conducted with the negative electrode of the test equipment; and the upper computer controls the operation of the lower computer and reads parameter information of the test equipment.

Description

Test system and test method thereof Technical Field

[0001] The present application relates to the technical field of battery module testing, and in particular to a testing system and a testing method thereof. Background Art

[0002] The battery module in an automotive power battery system consists of individual battery cells connected in series and parallel. The module's sampling harness collects the voltage of each individual battery cell, the total open-circuit voltage after series and parallel connections, and the temperature at the temperature monitoring point, outputting these data via a standard connector. A poor connection or a break in the module's sampling harness can result in a loss of voltage and temperature readings, potentially rendering the vehicle unusable or causing malfunctions. Therefore, continuity testing of the module's wiring harness is crucial in the battery module production process.

[0003] At present, the module wiring harness continuity test method mainly uses test equipment to test the voltage of battery cells. Frequent wiring is required during the test process, and the test speed is slow and inefficient.

[0004] Summary of the Invention

[0005] The main purpose of this application is to provide a testing system to improve testing efficiency and testing accuracy.

[0006] To achieve the above objectives, the test system proposed in this application includes:

[0007] A test circuit board, wherein the test circuit board is provided with a test circuit, wherein the test circuit includes a plurality of bus lines arranged side by side, wherein one end of each bus line is used to be connected to the positive electrode or the negative electrode of each battery cell of the battery module, and the other end of each bus line is connected to a first branch and a second branch; each first branch is provided with a control switch, and each second branch is provided with a control switch;

[0008] A testing device for testing parameter information of multiple battery cells of the battery module;

[0009] a lower computer, the lower computer being electrically connected to the control switch to control a first branch connected to one of the bus lines to be electrically conductive with the positive electrode of the test device, and a second branch connected to the other bus line to be electrically conductive with the negative electrode of the test device; and

[0010] The upper computer is communicatively connected with the test device and the lower computer to control the operation of the lower computer and read parameter information of the test device.

[0011] In the above-mentioned test system, one end of each bus circuit is connected to the positive electrode of each battery cell in the battery module, and the other end is connected to the test equipment through a branch circuit. The upper computer sends a test instruction to the lower computer, which can control the control switch that needs to be turned on, so that the first branch of one bus circuit is electrically connected to the positive electrode of the test equipment, and the second branch of the other bus circuit is electrically connected to the negative electrode of the test equipment. In this way, the test equipment can detect the parameter information of the battery cells in the battery module. The two bus circuits mentioned above can be selected from two adjacent ones, or the corresponding two bus circuits can be selected according to the connector pin definition on the battery module wiring harness board. Then, according to the test instruction, the first branch of one of the other two bus circuits is controlled to be electrically connected to the positive electrode of the test equipment, and the second branch of the other one is controlled to be electrically connected to the negative electrode of the test equipment, so as to detect the parameter information of other battery cells, such as voltage or resistance. This process is repeated, and the parameter information of multiple battery cells in the battery module can be detected without repeatedly plugging and unplugging the test equipment and the battery module. The host computer in the test system can obtain the detection data of the test equipment, process and analyze it, and then obtain the connection and disconnection status of the wiring harness.

[0012] Therefore, the testing system in the present application can realize the sequential detection of multiple battery cells in the battery module without the need for manual repeated plugging and unplugging of wires, thereby improving detection efficiency and improving detection accuracy.

[0013] In one embodiment of the present application, multiple first branches are connected to form a first connection end away from one end of the main line, and multiple second branches are connected to form a second connection end away from one end of the main line. One of the first connection end and the second connection end is electrically connected to the positive pole of the test device, and the other is electrically connected to the negative pole of the test device.

[0014] Here, setting the first connection end and the second connection end can eliminate the need for repeated plugging and unplugging of multiple first branches and multiple second branches with the test equipment, further reducing the operating procedures, improving detection efficiency, protecting the circuit, and reducing the chance of damage.

[0015] In one embodiment of the present application, there are at least two first connection ends, and the at least two first connection ends are arranged in parallel;

[0016] And / or, there are at least two second connection ends, and at least two second connection ends are arranged in parallel.

[0017] Here, at least two first connection terminals and two second connection terminals are provided, so that when one of the first connection terminals fails, the others can be used as alternatives, thereby improving the performance of the test circuit.

[0018] In one embodiment of the present application, the test circuit further includes a plurality of fuses, each of the fuses being disposed on one of the bus lines.

[0019] Each bus line is equipped with a fuse to effectively prevent the battery module from short-circuiting due to damage to the battery module's connectors or intermediate connecting plugs, thereby damaging the equipment.

[0020] In one embodiment of the present application, the testing device is a multimeter, which includes a voltage mode and a resistance mode. The multimeter is electrically connected to the host computer or the slave computer to switch between the voltage mode and the resistance mode.

[0021] Here, the test equipment can be a multimeter with multiple operating modes and multiple gears. When the host or slave computer controls the multimeter to switch to resistance mode, it can also detect thermistors in multiple battery cells and obtain the temperature value corresponding to the resistance. The use of a multimeter can further improve detection efficiency and simplify the structure.

[0022] In one embodiment of the present application, the test system further includes a transfer test harness, one end of the plurality of bus lines is connected to an aviation plug, and the two ends of the transfer test harness are respectively plugged into the aviation plug and the plug-in end of the battery module.

[0023] Here, by setting up the adapter test harness and the aviation plug, during testing, it is only necessary to connect the adapter test harness to the connector of the battery module, without repeatedly plugging and unplugging the interface of the main circuit of the test circuit, thereby reducing the wear rate of the test circuit board and the aviation plug, and achieving the purpose of convenient maintenance and cost reduction.

[0024] In one embodiment of the present application, the test system further includes a reading mechanism, which is electrically connected to the host computer. The reading mechanism is used to read the barcode information of the battery module and send it to the host computer. The host computer calls the test plan according to the barcode information.

[0025] Here, after the reading mechanism obtains the barcode information of the battery module, the host computer can obtain the corresponding detection formula of the battery module, thereby improving applicability and detection accuracy.

[0026] In one embodiment of the present application, the testing system further includes a testing frame, which includes a plurality of horizontal beams and a plurality of vertical beams connected vertically and horizontally, and the plurality of horizontal beams and the vertical beams enclose a testing channel for the battery module to pass through, and the reading mechanism is arranged in the testing channel.

[0027] The test frame can provide a testing environment for the battery module, prevent external interference, effectively improve the protection performance, and facilitate the assembly and fixation of various components, such as the reading mechanism.

[0028] In one embodiment of the present application, the test system further includes an image acquisition device, which is disposed on one of the beams and electrically connected to the host computer to capture and sample the battery modules in the test channel and send the images to the host computer.

[0029] The image acquisition device can collect and store the overall condition of the battery module and the connection condition of the battery cells, thereby providing a traceable basis for subsequent performance analysis.

[0030] In one embodiment of the present application, the testing system further comprises a light source, which is provided on another of the beams and is located on one side of the image acquisition device;

[0031] And / or, the test system further comprises a safety grating, which is arranged between two oppositely arranged vertical beams and electrically connected to the host computer to block the test channel.

[0032] The light source setting can provide supplementary light for the battery module to be inspected, thereby improving the image acquisition effect.

[0033] The setting of safety light grid can further enhance the protection.

[0034] In one embodiment of the present application, the test system further includes an integrated cabinet, which forms a accommodating cavity and is located on one side of the test frame. The test circuit board, test equipment and lower computer are all arranged in the accommodating cavity, and the aviation plug is at least partially exposed in the integrated cabinet.

[0035] Here, integrating various components into an integrated cabinet effectively saves floor space and increases equipment installation flexibility. Furthermore, the integrated cabinet is placed outside the test frame, outside the production line, improving equipment maintainability.

[0036] In one embodiment of the present application, the test system further includes a warning member, which is installed on the test frame and / or the integrated cabinet and is electrically connected to the host computer to reflect the operating status of the test system.

[0037] The warning device can display the operating status of the test system, such as normal operation, failure or standby, so that prediction can be made in advance, rework can be avoided, and detection efficiency can be improved.

[0038] In one embodiment of the present application, the test system further includes a human-computer interaction device, which is installed on the test frame and electrically connected to the host computer to display detection information or debug the test system.

[0039] The human-computer interaction device enables the operator to monitor the test data of the test system and adjust the operating parameters of the test system at any time to ensure the test performance of the test system.

[0040] In one embodiment of the present application, one of the vertical beams is rotatably connected to a mounting frame, and the human-computer interaction device is mounted on the mounting frame so as to be rotatable on a horizontal plane relative to the test frame.

[0041] The vertical beam is rotatably connected to the mounting frame, so that the mounting frame can be rotated in a horizontal plane, thereby adjusting the orientation of the human-machine interaction device, further facilitating viewing and operation by operators.

[0042] In one embodiment of the present application, the test system further includes a storage member, which is provided on one of the horizontal beams or vertical beams to store the adapter test harness.

[0043] The arrangement of the storage piece can facilitate the storage of the transfer test harness, making the test system more tidy and preventing the transfer test harness from being damaged.

[0044] In one embodiment of the present application, the test system further includes a starter, the starter being provided on a peripheral side of the test frame, the starter having two starter parts, the two starter parts being electrically connected to the host computer to start the test system;

[0045] And / or, the test system further includes a card reader, which is installed on the test frame and electrically connected to the host computer.

[0046] The starter is used to start the test system. By controlling the two starters with both hands at the same time, the operator's hands can be placed outside the test channel, thereby avoiding interference with the test and improving protection.

[0047] Based on the structure with or without the starter, the setting of the card reader improves the security level of the test system. Only after the identity is confirmed by swiping the card can the test system be debugged and controlled.

[0048] The present application also proposes a test method for a test system, wherein the test system includes a test circuit board, a test device, a host computer, and a slave computer. The test method includes the following steps:

[0049] The host computer sends a test instruction to the slave computer;

[0050] The lower computer receives the test instruction and controls a first branch connected to one of the two main circuits on the test circuit board to be electrically conductive with the positive electrode of the test device, and a second branch connected to the other main circuit to be electrically conductive with the negative electrode of the test device;

[0051] The testing device detects parameter information of the battery cell;

[0052] The host computer sends an instruction to read parameter information of the test device, and receives and stores the parameter information.

[0053] The method is that the upper computer sends a test instruction to the lower computer, and the lower computer can control the control switch that needs to be turned on, so that the first branch of a main circuit is electrically conductive with the positive pole of the test equipment, and the second branch of the other main circuit is electrically conductive with the negative pole of the test equipment. In this way, the test equipment can detect the parameter information of the battery cells in the battery module. The two main circuits mentioned above can be selected from two adjacent ones, or the corresponding two main circuits can be selected according to the connector pins on the battery module wiring board. By analogy, the parameter information of multiple battery cells can be detected in sequence. The method of the test system in this application can realize the sequential detection of the parameters of multiple battery cells in the battery module without the need for manual repeated plugging and unplugging of wiring, thereby improving the detection efficiency and the detection accuracy.

[0054] In one embodiment of the present application, the test device includes a multimeter having a voltage mode and a resistance mode and being electrically connected to the lower computer, and the parameter information is voltage data;

[0055] After the host computer sends an instruction to read the parameter information of the test device and receives and stores the parameter information, the method includes:

[0056] The lower computer sends a switching mode instruction to the multimeter;

[0057] The multimeter is switched to resistance mode;

[0058] The lower computer controls the first branch connected to one of the two main circuits on the test circuit board to be electrically connected to the positive electrode of the test equipment, and the second branch connected to the other main circuit to be electrically connected to the negative electrode of the test equipment, so that the multimeter obtains resistance data;

[0059] The host computer sends an instruction to read the resistance data of the multimeter, and receives and stores the resistance data.

[0060] This test method uses a multimeter to test the voltage and NTC resistance of individual battery cells within a battery module, as well as the voltage of the connector pins to be tested. Based on the test results, the continuity of the sampling wiring harness within the battery module can be determined. This method uses a multimeter to test two values, eliminating the need for repeated wiring harness insertion and removal, further improving test efficiency and protecting the wiring harness and connectors, enhancing performance.

[0061] In one embodiment of the present application, after the host computer sends an instruction to read the resistance data of the multimeter and receives and stores the resistance data, the process further includes:

[0062] The host computer determines that the sampling harness of the battery module is qualified according to the voltage data and resistance data, and uploads the detection data to the general execution platform;

[0063] Alternatively, the host computer determines that the sampling harness of the battery module is unqualified based on the voltage data and resistance data, and then marks and uploads the detection data to the general execution platform.

[0064] In this method, the wiring harness of the battery module can be detected through the processing of the host computer to quickly discover defects in the battery module and avoid rework. At the same time, different test results can be distinguished, thereby providing traceable data for subsequent processing.

[0065] In one embodiment of the present application, the test system further includes a test frame and a reading mechanism, wherein the test frame is formed with a test channel;

[0066] Before the step of the host computer sending the test instruction to the slave computer, the method further includes the following steps:

[0067] After the host computer detects that the test channel enters the battery module, it sends an instruction to read the barcode of the battery module to the reading mechanism;

[0068] The reading mechanism reads the barcode of the battery module and sends the barcode information to the host computer;

[0069] The host computer calls the corresponding detection formula according to the barcode information and triggers the detection mechanism.

[0070] By setting the reading mechanism, more targeted detection can be performed according to different types of battery modules, thereby improving detection efficiency.

[0071] In one embodiment of the present application, the detection system further includes an image acquisition device. After the host computer detects that the test channel has entered the battery module, before the step of sending an instruction to read the barcode of the battery module to the reading mechanism, the system further includes:

[0072] The host computer sends an image acquisition instruction to the image acquisition device;

[0073] The image acquisition device acquires image data of the battery module and sends it to the host computer;

[0074] The host computer receives and stores the image data.

[0075] Here, the image acquisition device can capture and store the overall condition of the battery module and the connection condition of the battery cells, thereby providing a traceability basis for subsequent performance analysis.

[0076] The present application also proposes a test method for a test system, wherein the test system includes a test circuit board, a test device, a host computer, and a slave computer. The test method includes the following steps:

[0077] Sending a first test instruction to a lower computer, so that the lower computer controls a first branch connected to one of two main circuits on the test circuit board to be electrically conductive with the positive electrode of the test equipment, and a second branch connected to the other main circuit to be electrically conductive with the negative electrode of the test equipment, so that the test equipment detects parameter information of the battery cell;

[0078] Send an instruction to read parameter information of the test equipment, and receive and store the parameter information.

[0079] The method is that the upper computer sends a test instruction to the lower computer, and the lower computer can control the control switch that needs to be turned on, so that the first branch of a main circuit is electrically conductive with the positive pole of the test equipment, and the second branch of the other main circuit is electrically conductive with the negative pole of the test equipment. In this way, the test equipment can detect the parameter information of the battery cells in the battery module. The two main circuits mentioned above can be selected from two adjacent ones, or the corresponding two main circuits can be selected according to the connector pins on the battery module wiring harness board. By analogy, the parameter information of multiple battery cells can be detected in sequence. The method of the test system in this application can realize the sequential detection of the parameters of multiple battery cells in the battery module, without the need for manual repeated plugging and unplugging of wiring, thereby improving the detection efficiency and the detection accuracy.

[0080] In one embodiment of the present application, the test device includes a multimeter having a voltage mode and a resistance mode and being electrically connected to the slave computer, and the parameter information is voltage data; after sending an instruction to read the parameter information of the test device and receiving and storing the parameter information, the method further includes:

[0081] Sending a second test instruction to the slave computer so that the slave computer controls the multimeter to switch to a resistance mode and obtain resistance data;

[0082] An instruction to read resistance data of a multimeter is sent, and the resistance data is received and stored.

[0083] This test method uses a multimeter to test the voltage and NTC resistance of individual battery cells within a battery module, as well as the voltage of the connector pins to be tested. Based on the test results, the continuity of the sampling wiring harness within the battery module can be determined. This method uses a multimeter to test two values, eliminating the need for repeated wiring harness insertion and removal, further improving test efficiency and protecting the wiring harness and connectors, enhancing performance.

[0084] In one embodiment of the present application, after sending an instruction to read resistance data of a multimeter and receiving and storing the resistance data, the method further includes:

[0085] If the sampling harness of the battery module is determined to be qualified based on the voltage data and resistance data, the test data is uploaded to the general execution platform;

[0086] Alternatively, if it is determined based on the voltage data and resistance data that the sampling harness of the battery module is unqualified, the test data is marked and uploaded to the general execution platform.

[0087] In this method, the wiring harness of the battery module can be detected through the processing of the host computer to quickly discover defects in the battery module and avoid rework. At the same time, different test results can be distinguished, thereby providing traceable data for subsequent processing.

[0088] In one embodiment of the present application, the test system further includes a test frame and a reading mechanism, wherein the test frame forms a test channel, and before the step of sending the first test instruction to the lower computer, the test system further includes the following steps:

[0089] Detecting that the test channel enters the battery module;

[0090] Sending an instruction to read the barcode of the battery module to a reading mechanism to read the barcode of the battery module;

[0091] Obtain the barcode information, and call the corresponding detection formula to trigger the detection mechanism according to the barcode information.

[0092] By setting the reading mechanism, more targeted detection can be performed according to different types of battery modules, thereby improving detection efficiency.

[0093] In one embodiment of the present application, the detection system further includes an image acquisition device, which, after detecting that the test channel enters the battery module, sends an instruction to read the barcode of the battery module to the reading mechanism, and before the step of reading the barcode of the battery module, further includes:

[0094] Sending an image acquisition instruction to an image acquisition device;

[0095] The image data of the battery module captured by the image capture device is acquired and stored.

[0096] Here, the image acquisition device can capture and store the overall condition of the battery module and the connection condition of the battery cells, thereby providing a traceability basis for subsequent performance analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0098] FIG1 is a schematic diagram of the structure of the test system of the present application;

[0099] FIG2 is a schematic structural diagram of an embodiment of a test circuit board in the test system of the present application;

[0100] FIG3 is a schematic diagram of the connection structure between the multimeter and the battery module in the test system of the present application;

[0101] FIG4 is a flow chart of a first embodiment of a testing method of the testing system of the present application;

[0102] FIG5 is a flow chart of a second embodiment of a testing method of the testing system of the present application;

[0103] FIG6 is a flow chart of a third embodiment of a testing method of the testing system of the present application;

[0104] FIG7 is a flow chart of a fourth embodiment of a testing method of the testing system of the present application;

[0105] FIG8 is a flow chart of a fifth embodiment of a testing method of the testing system of the present application;

[0106] FIG9 is a flow chart of a sixth embodiment of a testing method of the testing system of the present application;

[0107] FIG10 is a flow chart of a seventh embodiment of a testing method of the testing system of the present application;

[0108] FIG11 is a flow chart of an eighth embodiment of a testing method of the testing system of the present application;

[0109] FIG12 is a flow chart of a ninth embodiment of a testing method of the testing system of the present application.

[0110] Description of Figure Numbers:

[0111] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0112] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0113] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0114] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0115] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0116] Batteries mentioned in this field can be categorized as either disposable or rechargeable, depending on whether they are rechargeable. Common rechargeable battery types include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries are widely used in pure electric and hybrid vehicles. While these batteries have a relatively low capacity, they offer high output, high charging current, and a long service life, albeit at a relatively high cost.

[0117] The batteries described in the embodiments of this application are rechargeable batteries. The following description of the embodiments disclosed herein primarily uses lithium-ion batteries as an example. It should be understood that the embodiments disclosed herein are applicable to any other appropriate type of rechargeable battery. The batteries described in the embodiments disclosed herein can be directly or indirectly used in appropriate devices to power such devices.

[0118] The battery mentioned in the embodiments disclosed in this application refers to a single physical module that includes one or more battery cells to provide a predetermined voltage and capacity. A battery cell is the basic unit in a battery, which includes a positive electrode sheet, a negative electrode sheet, an electrolyte, and a separator. Lithium-ion battery cells mainly rely on the movement of lithium ions between the positive electrode sheet and the negative electrode sheet to work. Generally, they can be divided into cylindrical battery cells, rectangular battery cells, and soft-pack battery cells according to the packaging method. The following will mainly focus on rectangular battery cells. It should be understood that the embodiments described below are also applicable to cylindrical battery cells or soft-pack battery cells in some aspects.

[0119] The development of battery technology requires simultaneous consideration of multiple design factors, such as energy density, cycle life, discharge capacity, charge / discharge rate, and other performance parameters. During the battery manufacturing process, batteries often undergo numerous steps and stations to be produced, measured, and completed. First, the positive and negative electrode sheets, electrolyte, and separator are formed into the shape of a single battery cell. Then, the battery cell undergoes shell insertion, welding, and formation processes to form a single cell.

[0120] The battery module in an automotive power battery system is composed of battery cells connected in series and parallel. The module's sampling harness collects the voltage of each battery cell, the total open-circuit voltage after series and parallel connection, and the temperature at the temperature monitoring point, and outputs it through a standard connector. Poor welding, poor terminal crimping, external force, and other factors can cause poor contact or disconnection in the module harness, resulting in loss of voltage and temperature points, making the vehicle unable to drive on the road or causing driving failures. Therefore, module harness continuity testing is extremely important in the battery module (battery pack) production process.

[0121] Conventional methods for testing module wiring harness continuity primarily rely on manual wiring and handheld multimeter testing. This requires frequent wiring changes for multiple battery cells, resulting in slow and inefficient testing. Due to human factors, test errors are prone to missed connections, and testing accuracy is low, making it impossible to accurately detect connection quality issues between the sampling wiring harness board and the battery module.

[0122] Therefore, in order to solve the problem of low testing efficiency in related technologies, this application improves the test system structure. By setting up a test circuit board in the test system that can simultaneously test the voltages of multiple battery cells in a battery module, there is no need to repeatedly plug and unplug wires for multiple battery cells in the same module, thereby improving detection efficiency and detection accuracy.

[0123] Referring to Figures 1 to 3, in one embodiment of the present application, a test system 100 includes a test circuit board 10, a test device, a lower computer, and a host computer. The test device is used to test parameter information of multiple battery cells in a battery module. The test circuit board 10 is provided with a test circuit 11. The test circuit 11 includes a plurality of bus lines 111 arranged in parallel. One end of each bus line 111 is used to connect to the positive electrode or the negative electrode of each battery cell in the battery module. The other end of each bus line 111 is connected to a first branch and a second branch. Each first branch is provided with a control switch 115, and each second branch is provided with a control switch 115.

[0124] The lower computer is electrically connected to the control switch 115 to control the first branch connected to one of the two main lines 111 to be electrically conductive with the positive pole of the test equipment, and the second branch connected to the other to be electrically conductive with the negative pole of the test equipment; the upper computer is communicatively connected to both the test equipment and the lower computer to control the operation of the lower computer and read the parameter information of the test equipment.

[0125] Here, the test circuit board 10 serves as the carrier for the test circuit 11 and includes multiple bus lines 111. One end of each bus line 111 can be arranged side by side along the width of the test circuit board 10, facilitating connection of the battery module's wiring harness. The other end of each bus line 111 branches into a first branch and a second branch, and each of the first and second branches is arranged along the other side of the width of the test circuit board 10. This allows the bus lines 111 to be arranged side by side, spaced apart along the length of the board. The multiple first and second branches are also spaced apart and side by side along the length of the board and can be configured as pin-type connectors, further facilitating connection of the wiring harness. A control switch 115 is provided on each first and second branch. The opening and closing of each control switch 115 affects the connection and disconnection of the bus line 111, thereby enabling testing of different battery cells.

[0126] The positive and negative poles of the test equipment are electrically connected to the positive and negative poles of the battery cells of the battery module through the test circuit board 10, and are used to detect and display the parameter information of the battery cells. The parameter information can be voltage data or resistance data, etc. When it is voltage data, the type of the test equipment can be a multimeter, a voltmeter or an oscilloscope, etc., which is not limited here.

[0127] The lower computer, ie, a programmable logic controller (PLC), is electrically connected to the test circuit 11 . The two can be connected directly or wirelessly, as long as the control switch 115 can be controlled to be on and off.

[0128] The upper computer is the carrier of software that can send instructions to the lower computer and read and process various data. For example, as the main controller, it can send test instructions to the lower computer, and finally obtain the test results, analyze and process them, and determine whether the wiring harness is connected or not.

[0129] In the aforementioned test system 100, one end of each bus line 111 is connected to the positive electrode of each battery cell in the battery module, and the other end is connected to the test equipment via a branch line 113. The host computer sends a test command to the slave computer, which controls the control switch 115 that needs to be turned on, so that the first branch of one bus line 111 is electrically connected to the positive electrode of the test equipment, and the second branch of the other bus line 111 is electrically connected to the negative electrode of the test equipment. This allows the test equipment to detect parameter information of the battery cells in the battery module. The two bus lines 111 can be selected as adjacent ones, or the corresponding two bus lines 111 can be selected based on the connector pin definitions on the battery module wiring harness board. Then, the first branch of one of the other two bus lines 111 is controlled to be electrically connected to the positive electrode of the test equipment, and the second branch of the other bus line is controlled to be electrically connected to the negative electrode of the test equipment, thereby detecting the parameter information of the other battery cell. This repetitive process can be repeated, without the need for the test equipment to repeatedly plug and unplug the circuit between the test equipment and the battery module, to achieve voltage detection of multiple battery cells in the battery module. The host computer in the test system 100 can obtain the parameter information of the battery cells detected by the test equipment, process and analyze it, and then obtain the connection and disconnection status of the wiring harness.

[0130] Therefore, the testing system 100 in the present application can realize the sequential testing of multiple battery cells in the battery module without the need for manual repeated plugging and unplugging of wires, thereby improving the testing efficiency and the testing accuracy.

[0131] Please continue to refer to Figure 2. In one embodiment of the present application, multiple first branches are connected at one end away from the main line 111 to form a first connection end 112, and multiple second branches are connected at one end away from the main line 111 to form a second connection end 114. One of the first connection end 112 and the second connection end 114 is electrically connected to the positive pole of the test equipment, and the other is electrically connected to the negative pole of the test equipment.

[0132] Here, the other end of each main line 111 branches out into a first branch and a second branch. The first branch extends along the extension direction of the main line 111, and the second branch is bent and extended along the extension direction of the main line 111. In this way, multiple first branches of multiple main lines 111 are arranged side by side at intervals, and finally gathered and connected to form a first connection end 112. Multiple second branches of multiple main lines 111 are arranged side by side at intervals, and finally gathered and connected to form a second connection end 114. The first connection end 112 is directly connected to one of the positive and negative poles of the test equipment, and the second connection end 114 is directly connected to the other of the positive and negative poles of the test equipment. The lower computer only needs to control the opening and closing of the control switch 115.

[0133] Setting the first connection end 112 and the second connection end 114 can eliminate the need for repeated plugging and unplugging of multiple first branches and multiple second branches from the test equipment, further reducing the operating procedures, improving detection efficiency, protecting the circuit, and reducing the chance of damage.

[0134] 2 , in one embodiment of the present application, at least two first connection ends 112 are provided, and the at least two first connection ends 112 are arranged in parallel;

[0135] And / or, there are at least two second connection ends 114 , and the at least two second connection ends 114 are connected in parallel.

[0136] To improve the performance of the test circuit board 10, at least two first connection terminals 112, for example, two, three, or more, may be provided. By providing two first connection terminals 112, if a fault occurs at the connection between one first connection terminal 112 and the test equipment, testing can be performed by switching to the other first connection terminal 112, effectively saving costs and improving the performance of the test circuit board 10.

[0137] Similar to the above, at least two second connection terminals 114 may be provided. When one of the second connection terminals 114 fails, the other second connection terminals 114 may be switched to further improve the performance of the test circuit board 10 .

[0138] Referring again to FIG. 2 , in one embodiment of the present application, the test circuit 11 further includes a plurality of fuses 117 , each fuse 117 being disposed on a main circuit 111 .

[0139] Here, fuse 117 is provided on bus line 111, meaning that fuse 117 is connected in series with bus line 111, thereby automatically opening in the event of a short circuit or fault in the bus line, thereby protecting the device. In one example, the connection between bus line 111 and fuse 117 can be pluggable. For example, fuse 117 has a fuse 117 holder, and a portion of bus line 111 is plugged into fuse 117 holder to achieve connection. In other examples, a threaded connection can also be used, which will not be described in detail here.

[0140] Each bus circuit 111 is provided with a fuse 117 , which can effectively prevent the battery module from short-circuiting due to damage to the battery module connector or the intermediate connecting plug, thereby damaging the equipment, thereby improving the safe use performance of the test circuit 11 .

[0141] In one embodiment of the present application, the testing device is a multimeter, which includes a voltage mode and a resistance mode. The multimeter is electrically connected to a host computer or a slave computer to switch between the voltage mode and the resistance mode.

[0142] In one example, the multimeter can be a six-and-a-half-digit or seven-and-a-half-digit digital multimeter 20, which has high accuracy and can significantly improve detection accuracy, thereby improving the timeliness of wiring harness disconnection. Here, the test equipment can be a multimeter with multiple operating modes and multiple gears, such as voltage or resistance. When the host computer or the slave computer controls the multimeter to switch to resistance mode, it can also detect thermistors at multiple battery cells and then obtain the temperature value corresponding to the resistance; or the resistance value of the battery cell.

[0143] The use of a multimeter can further improve detection efficiency and simplify the structure.

[0144] Please refer to Figure 3. In one embodiment of the present application, the test system 100 also includes a transfer test harness, one end of the multiple bus lines 111 is connected to an aviation plug, and the two ends of the transfer test harness are respectively plugged into the aviation plug and the plug-in end of the battery module.

[0145] Here, the transfer test harness is a wire segment that can be connected by plugging, which is convenient for plugging and unplugging, improving efficiency and convenience. One end of the transfer test harness is electrically connected to the test circuit board 10 through an aviation plug. The number of pins of the aviation plug and the number of aviation plugs can be set as needed to correspond to the number of multiple bus lines 111 and the number of battery cells in the battery module. For example, two sets of 64-pin aviation plugs can be selected. The setting of the aviation plug can facilitate the replacement and connection of the transfer test harness. The length of the transfer test harness should not be too long to save costs. In order to protect the transfer test harness, a harness channel can also be set to connect the transfer test harness to the connector of the battery module through the harness channel, effectively reducing the chance of damage.

[0146] By setting up the adapter test harness and the aviation plug, during testing, it is only necessary to connect the adapter test harness to the connector of the battery module, without repeatedly plugging and unplugging the interface of the main line 111 of the test circuit 11, thereby reducing the wear rate of the test circuit board and the aviation plug, and achieving the purpose of convenient maintenance and cost reduction.

[0147] In one embodiment of the present application, the test system 100 further includes a reading mechanism, which is electrically connected to a host computer. The reading mechanism is used to read the barcode information of the battery module and send it to the host computer. The host computer calls the test plan according to the barcode information.

[0148] Here, the reading mechanism can be a wireless radio frequency automatic identification device or a barcode scanner, without limitation. Due to the different structures and types of battery modules, a reading mechanism is provided to read the barcode information of the battery module to obtain the corresponding type or structure of the battery module. This facilitates the host computer to select the corresponding test solution based on the obtained battery module type or structure, thereby improving applicability and detection accuracy.

[0149] The test plan is based on the test requirements of the battery product (the requirements are generally single cell voltage test, single cell voltage difference test, and NTC resistance test) and connector pin definition. First, edit the test sequence, multimeter measurement mode (voltage mode or resistance mode), and the number of the relay that needs to be closed in the host computer software.

[0150] Please continue to refer to Figure 1. In one embodiment of the present application, the test system 100 also includes a test frame 30. The test frame 30 includes multiple horizontal beams 31 and multiple vertical beams 32 connected vertically and horizontally. The multiple horizontal beams 31 and the vertical beams 32 enclose a test channel 30a. The test channel 30a is for the battery module to pass through, and the reading mechanism is arranged in the test channel 30a.

[0151] The test frame 30 may be a frame structure comprising multiple horizontal beams 31 and multiple vertical beams 32. The horizontal beams 31 and vertical beams 32 may be made of materials such as profiles or wood, which facilitates processing and provides good structural stability. The horizontal beams 31 and vertical beams 32 may be connected by fixed means, such as bonding or welding, or by removable means, such as mortise and tenon joints, plug-in joints, or threaded joints, without limitation. In one example, the test frame 30 includes four vertical beams 32 and multiple horizontal beams 31 connected between two vertical beams 32, forming a square frame structure. A test channel 30a is formed in the lower middle portion of the test frame 30, allowing it to be integrated with other production lines. Battery modules can be directly passed through the test channel 30a via a conveyor structure, completing the battery module testing process. In other examples, three or more vertical beams 32 may be provided. The reading mechanism may be located on one of the horizontal beams 31 or one of the vertical beams 32, without limitation, as long as it corresponds to the barcode of the battery module.

[0152] The test frame 30 can provide a testing environment for the battery module, prevent external interference, and effectively improve the protection performance; it is convenient to assemble and fix various components, such as the reading mechanism, provide support, and adapt to the production line to improve the overall testing efficiency of the battery module.

[0153] In one example, the test frame 30 further includes footings 33, four of which are mounted at the bottom ends of the vertical beams 32. This allows for leveling of the vertical beams 32 and the horizontal beams 31, while also improving support stability. In another example, the test frame 30 further includes a protective plate mounted at the junction of the top ends of the vertical beams 32 and the top horizontal beam 31, or mounted on the sides of the vertical beams 32, to protect the test channel 30a from interference from the external environment.

[0154] 1 , in one embodiment of the present application, the test system 100 further includes an image acquisition device 40 , which is disposed on a beam 31 and electrically connected to a host computer to capture and sample the battery modules in the test channel 30 a and send the images to the host computer.

[0155] In one example, the image acquisition device 40 can be a line scan camera, which offers high resolution and excellent image quality. In other examples, the image acquisition device 40 can also be a 3D camera, an area camera, or a scanner, without limitation. The image acquisition device 40 is mounted on a horizontal beam 31, which is located near the top of the vertical beam 32. Its horizontal projection is located at the center or one end of the test channel 30a, thereby facilitating comprehensive image capture of the entire battery module structure.

[0156] The image acquisition device 40 can collect the overall condition of the battery module and the connection condition of the battery cells, and send the image to the host computer, which stores the image, thereby providing a traceability basis for subsequent performance analysis.

[0157] 1 , in one embodiment of the present application, the testing system 100 further includes a light source 50 , which is disposed on another beam 31 and located on one side of the image acquisition device 40 ;

[0158] And / or, the testing system 100 further includes a safety grating 60 , which is disposed between two oppositely disposed vertical beams 32 and electrically connected to a host computer to block the testing channel 30 a .

[0159] In one example, the light source 50 is a bar-shaped light source 50 with a wide light output range, providing better fill light for the image capture device 40. In other examples, the light source 50 may also be a dot matrix light bead structure. The light source 50 is disposed on one side of the image capture device 40 on a horizontal plane and emits light toward the battery module.

[0160] The light source 50 can be provided to provide supplementary light for the battery module to be inspected, thereby improving the image acquisition effect.

[0161] With or without the light source 50, in order to improve safety, a safety grating 60 is provided on the test frame 30. The safety grating 60, which is also a photoelectric safety protection device, may include a transmitting end and a receiving end, which are respectively installed on two vertical beams 32 arranged opposite to each other. The transmitting end emits light, and when the receiving end receives the emitted light, it indicates that there is no obstacle affecting it; when the receiving end does not receive the emitted light, it indicates that an obstacle extends into the test channel 30a, which will affect the detection, thereby sending a signal to the upper computer, and the upper computer can send a pause command to the lower computer, so that the lower computer controls the detection equipment to stop the detection.

[0162] The provision of the safety light grid 60 can further enhance protection and improve detection effect.

[0163] Please refer to Figure 1 again. In one embodiment of the present application, the test system 100 also includes an integrated cabinet 70. The integrated cabinet 70 is formed with a accommodating cavity and is located on one side of the test frame 30. The test circuit board 10, the test equipment and the lower computer are all arranged in the accommodating cavity, and the aviation plug is at least partially exposed in the integrated cabinet 70.

[0164] The integrated cabinet 70 can be arranged in a cubic structure, which is convenient for placement on the ground to form a stable support structure. In other examples, the shape of the integrated cabinet 70 can also be cylindrical or other shapes. The material of the integrated cabinet 70 can be metal, for example, stainless steel or aluminum alloy, etc., which has high structural strength and durability. The surface of the integrated cabinet 70 can be treated to remove static electricity to prevent it from affecting the internal components. Optionally, the integrated cabinet 70 includes a cabinet body and a cabinet door, the cabinet body forms a storage cavity with an opening, and the cabinet door can be movably connected to the cabinet body so that the opening of the storage cavity can be closed or opened, which is convenient for operators to perform maintenance and installation. The test circuit board 10, the test equipment and the lower computer are all located in the storage cavity, which can avoid interference and improve protection. The fixed installation of the test equipment can also improve the detection accuracy. In one example, a visual window can be set in the cabinet body as needed so that the dial condition of the test equipment can be observed. Other auxiliary components can also be set in the storage cavity, such as a power supply or a heat sink, etc., which are not limited here. When an aviation plug and a transfer test harness are provided, the aviation plug is partially exposed on the cabinet to facilitate the connection of the transfer test harness.

[0165] In one example, a wiring harness sleeve can be provided between the integrated cabinet 70 and the test frame 30. The wiring harness sleeve forms a wiring harness channel, and the transfer test harness can pass through the wiring harness sleeve to be connected to the battery module and the aviation plug respectively, thereby improving the protection of the transfer test harness and extending its service life.

[0166] Here, integrating the various components into an integrated cabinet 70 can effectively save floor space and improve the flexibility of equipment installation. The integrated cabinet 70 can be set up independently and placed on one side of the test rack 30, that is, outside the production line, improving the maintainability of the equipment.

[0167] Please refer to Figure 1. In one embodiment of the present application, the test system 100 also includes a warning member 81. The warning member 81 is installed on the test frame 30 and / or the integrated cabinet 70 and is electrically connected to the host computer to reflect the operating status of the test system 100.

[0168] Here, the warning component 81 can be a lamp or an alarm. For example, when the warning component 81 is a three-color lamp, it can have four output states of three colors of lights and a buzzer. When the test system 100 is operating normally, a green light can be output; when the test system 100 is waiting for material, a yellow light can be output; when the test system 100 is down or fails, a red light can be output and a buzzer can be sounded to provide a reminder.

[0169] The warning member 81 can reflect the operating status of the test system 100 in real time, so that timely processing and maintenance can be carried out, avoiding rework and inspection of too many battery modules, and improving inspection efficiency.

[0170] 1 , in one embodiment of the present application, the test system 100 further includes a human-computer interaction device, which is mounted on the test frame 30 and electrically connected to a host computer to display detection information or debug the test system 100 .

[0171] In one example, the human-computer interaction device includes a display 91, a keyboard, and a mouse. The display 91 can display the battery cell parameter information obtained by the test equipment, allowing the operator to monitor it in real time. The keyboard and mouse also facilitate the operator's parameter debugging and data display of the test system 100. In another example, the human-computer interaction device can also be a touch screen display.

[0172] The human-computer interaction device allows an operator to monitor the detection data of the test system 100 and adjust the operating parameters of the test system 100 at any time to improve the test performance of the test system 100 .

[0173] In one embodiment of the present application, a vertical beam 32 is rotatably connected to a mounting bracket 93 , and the human-machine interaction device is mounted on the mounting bracket 93 so as to be rotatable relative to the test frame 30 on a horizontal plane.

[0174] In one example, one side of the mounting frame 93 and one of the vertical beams 32 is provided with a rotating shaft, and the other is provided with an axial hole. The rotation of the mounting frame 93 relative to the vertical beam 32 is achieved by the cooperation of the rotating shaft and the axial hole. In other examples, the rotation connection can also be achieved by other components, such as hinges. In order to limit the rotation angle of the mounting frame 93, a locking piece can be provided to lock the rotation of the mounting frame 93 and the vertical beam 32, thereby limiting it to a certain rotation angle. When adjustment is required, the locking piece can be opened. Alternatively, a damping piece is provided on the rotation structure of the mounting frame 93 so that the mounting frame 93 can rotate in a damped manner so that it can be limited to any position. In an optional example, the mounting frame 93 includes a supporting portion and a clamping portion. The supporting portion is used to place the keyboard and mouse, and the clamping portion is formed with a mounting groove, and the display component can be installed in the mounting groove.

[0175] The vertical beam 32 is rotatably connected to the mounting bracket 93, so that the mounting bracket 93 can be rotated in a horizontal plane, thereby adjusting the direction of the human-machine interaction device, further facilitating the viewing and operation of the operator.

[0176] In one embodiment of the present application, the testing system 100 further includes a receiving member 82 . The receiving member 82 is disposed on a horizontal beam 31 or a vertical beam 32 to receive the adapter test harness.

[0177] In one example, the storage member 82 is a hook structure, which has a fixing portion and a hook connected to the fixing portion, the fixing portion is used to be detachably connected to the vertical beam 32, and the hook is used to hang the transfer test harness. The number of hooks can be two to prevent the transfer test harness from being excessively bent to extend its service life. In other examples, the storage member 82 can also be a box structure, etc. After the test is completed, the end of the transfer test harness connected to the battery module can be hung on the storage member 82, or placed in the storage member 82. In other examples, the fixing portion can also be installed on a beam 31, and the height of the beam 31 can be located in the middle and lower part of the vertical beam 32 for easy operation and storage.

[0178] The arrangement of the storage member 82 can facilitate the storage of the transfer test harness, making the test system 100 more tidy and preventing the transfer test harness from being damaged.

[0179] In one embodiment of the present application, the test system 100 further includes a starter 83 , which is disposed on a peripheral side of the test frame 30 . The starter 83 includes two starter parts, which are electrically connected to a host computer to start the test system 100 .

[0180] And / or, the test system 100 further includes a card reader 94 , which is installed on the test frame 30 and electrically connected to the host computer.

[0181] The starter 83 is used to start the test system 100 and can send a start instruction to the host computer, so that the host computer enters the test state. The starter 83 includes two starter parts. Pressing the two starter parts at the same time can realize the sending of the start instruction, and then trigger the test state of the host computer. In one example, the starter 83 is located at a crossbeam 31, and the crossbeam 31 is close to the middle and lower part of the vertical beam 32, and is at a height that an adult standing with both hands hanging down can touch, which is convenient for the operator to operate. By controlling the two starter parts with both hands at the same time, the operator's hands can be placed outside the test channel 30a, thereby avoiding interference with the test and improving protection.

[0182] Based on the structure with or without the actuator 83, a card reader 94 can be installed on the support or mounting portion of the mounting bracket 93. The card reader 94 allows an operator to swipe a card and is electrically connected to a host computer. After the operator swipes the card, the card information is sent to the host computer for identity verification. If the information matches, the host computer sends instructions for subsequent parameter adjustment and data display. The installation of the card reader 94 improves the security level of the test system 100. Only after the card is swiped to confirm the identity can the test system 100 be debugged and controlled.

[0183] Referring to FIG. 4 , the present application further proposes a test method for a test system, the test system including a test circuit board, a test device, a host computer, and a slave computer. The test method includes the following steps:

[0184] Step S1: The upper computer sends a test instruction to the lower computer;

[0185] Step S2: The lower computer receives the test instruction and controls the first branch connected to one of the two main circuits on the test circuit board to be electrically conductive with the positive electrode of the test equipment, and the second branch connected to the other main circuit to be electrically conductive with the negative electrode of the test equipment;

[0186] Step S3: The testing equipment detects the parameter information of the battery cell;

[0187] Step S4: The host computer sends an instruction to read the parameter information of the test equipment, and receives and stores the parameter information.

[0188] In the above method, in step S1, before the upper computer sends the test instruction to the lower computer, the test system can be started by manually triggering the starting component. In step 2, after receiving the test instruction, the lower computer can control the control switches on the first branch and the second branch one by one, so that one main circuit is connected to the positive pole of the test equipment and the other main circuit is connected to the negative pole of the test equipment, and the parameter information of the battery cells to be tested are tested one by one until all the battery cells to be tested are tested. The above two main circuits 111 can be selected from two adjacent ones, or the corresponding two main circuits 111 can be selected according to the connector pin definition on the battery module wiring harness board. The test equipment here can be a multimeter, a voltmeter or an oscilloscope, etc., and the parameter information here can be voltage data, resistance data, etc., which can be selected as needed. In step S3, the test equipment can obtain the parameter information of the battery cell while the test circuit is turned on, and can store the parameter information or send it directly to the upper computer. In step S4, when the host computer sends an instruction to read parameter information, the test equipment then sends the parameter information to the host computer. The host computer stores the information after receiving it and can also analyze it to determine whether the detection harness of the battery cell is connected or disconnected.

[0189] The method is that the upper computer sends a test instruction to the lower computer, and the lower computer can control the control switch that needs to be turned on, so that the first branch of a main circuit is electrically connected to the positive electrode of the test equipment, and the second branch of another main circuit is electrically connected to the negative electrode of the test equipment. In this way, the test equipment can detect the parameter information of the battery cells of the battery module, for example, voltage information. And so on, the parameter information of the battery cells to be tested can be detected in sequence. The method of the test system in this application can realize the sequential detection of multiple battery cells in the battery module without manual repeated plugging and unplugging of wiring, thereby improving detection efficiency and detection accuracy.

[0190] 5 , in one embodiment of the present application, the test equipment includes a multimeter having a voltage mode and a resistance mode and electrically connected to a lower computer, and the parameter information is voltage data;

[0191] After the host computer sends an instruction to read the parameter information of the test device and receives and stores the parameter information, the process includes:

[0192] Step S5: The lower computer sends a mode switching instruction to the multimeter;

[0193] Step S6: The multimeter is switched to resistance mode;

[0194] Step S7: The lower computer controls the first branch connected to one of the two main circuits on the test circuit board to be electrically connected to the positive electrode of the test equipment, and the second branch connected to the other main circuit to be electrically connected to the negative electrode of the test equipment, so that the multimeter obtains resistance data;

[0195] Step S8: The host computer sends an instruction to read the resistance data of the multimeter, and receives and stores the resistance data.

[0196] In the above method, step S5, in which the lower computer sends the switching mode to the multimeter, can speed up signal transmission and improve control efficiency, thereby increasing the switching efficiency of the multimeter. In other examples, the upper computer can also be directly connected to the multimeter and send a switching mode instruction to the multimeter. After the multimeter switches to the resistance mode, the lower computer controls the control switches corresponding to the two main circuits to close, as with the test voltage data, thereby connecting the multimeter and testing the NTC resistance of multiple battery cells one by one until all the battery cells to be tested are tested. The two main circuits 111 mentioned above can be selected from two adjacent ones, or the corresponding two main circuits 111 can be selected based on the connector pin definitions on the battery module wiring harness board. While the test circuit is turned on, the test equipment can obtain the resistance data of the battery cell and directly store the resistance data. When the upper computer sends a command to read parameter information, the test equipment then sends the parameter information to the upper computer, which stores it after receiving it and can also analyze it to determine whether the detection harness of the battery cell is connected or disconnected. Alternatively, in other examples, the multimeter obtains resistance data and sends it directly to the host computer.

[0197] This testing method, using a multimeter, can individually measure the voltage and resistance of individual battery cells within a battery module. It then calculates the voltage difference and the corresponding temperature, which determines whether the sampling wiring harness within the battery module is connected or disconnected based on these results, improving detection accuracy. This method uses a multimeter to detect two values, eliminating the need for repeated plugging and unplugging of the wiring harness, further improving detection efficiency and protecting the wiring harness and connectors, enhancing performance.

[0198] 6 , in one embodiment of the present application, after the host computer sends an instruction to read resistance data of the multimeter and receives and stores the resistance data, the process further includes:

[0199] Step S91: The host computer determines whether the sampling harness of the battery module is qualified based on the voltage data and resistance data, and uploads the test data to the general execution platform;

[0200] Or, step S92: the host computer determines that the sampling harness of the battery module is unqualified based on the voltage data and the resistance data, and then marks and uploads the detection data to the general execution platform.

[0201] In step S91, the host computer can calculate the voltage difference of a single battery cell based on the voltage data, and obtain the temperature value corresponding to the NTC resistor based on the resistance data. The actual voltage difference and temperature values ​​detected are compared with the standard voltage difference and temperature values. If they are consistent, it can be determined that the sampling harness at a certain position of the battery module is qualified, and the voltage, voltage difference, NTC temperature and other data of the single battery cell are stored locally and uploaded directly to the general execution platform.

[0202] In step S92, the judgment basis is the same as above. If the comparison results are inconsistent, it means that the sampling harness is faulty or disconnected. At this time, the obtained data needs to be marked and then uploaded to the general execution platform.

[0203] In this method, the sampling harness of the battery module can be detected through the processing of the host computer to quickly discover defects in the battery module and avoid rework. At the same time, different test results can be distinguished, thereby providing traceable data for subsequent processing.

[0204] 7 , in one embodiment of the present application, the test system further includes a test frame and a reading mechanism, and the test frame is formed with a test channel;

[0205] Before step S1 of the upper computer sending the test instruction to the lower computer, the following steps are also included:

[0206] Step S01: After the host computer detects that the test channel has entered the battery module, it sends a command to read the barcode of the battery module to the reading mechanism;

[0207] Step S02: The reading mechanism reads the barcode of the battery module and sends the barcode information to the host computer;

[0208] Step S03: The host computer calls the corresponding detection formula according to the barcode information and triggers the detection mechanism.

[0209] The test frame can provide a testing environment for the battery module, prevent external interference, and effectively improve the protection performance; it also facilitates the assembly and fixation of various components, such as the reading mechanism, provides support, and is compatible with the production line, thereby improving the overall testing efficiency of the battery module.

[0210] The reading mechanism can be a wireless radio frequency automatic identification device or a bar code scanner, which is not limited here. Due to the different structures and types of battery modules, a reading mechanism is set to read the bar code information of the battery module, thereby obtaining the corresponding type or structure of the battery module, which is convenient for the host computer to select the corresponding test scheme according to the type or structure of the battery module obtained. Therefore, before the host computer sends the test instruction, in step S01, the test channel is first inspected to determine whether there is a battery module that needs to be inspected entering. If so, the bar code information needs to be read first. In step S02, after the reading mechanism drives the bar code, the obtained bar code information is sent to the host computer. Then in step S03, the host computer retrieves the corresponding test scheme and test mechanism according to the bar code information, so that the control of the lower computer is more targeted and accurate.

[0211] The test plan is based on the battery product's test requirements (typically single cell voltage testing, single cell voltage differential testing, and NTC resistance testing) and connector pin definitions. The test sequence, multimeter measurement mode (voltage or resistance), and relay numbers to be closed are first programmed in the host computer software. The reading mechanism settings allow for more targeted testing based on different battery module types, improving applicability and accuracy.

[0212] Referring to FIG. 8 , in one embodiment of the present application, the detection system further includes an image acquisition device. After the host computer detects that the test channel has entered the battery module, before step S01 of sending an instruction to read the barcode of the battery module to the reading mechanism, the system further includes:

[0213] Step S001: The host computer sends an image acquisition instruction to the image acquisition device;

[0214] Step S002: The image acquisition device acquires image data of the battery module and sends it to the host computer;

[0215] Step S003: The host computer receives and stores the image data.

[0216] The type of image acquisition device is not limited and can be a line scan camera, an area camera, a 3D camera, etc. This image acquisition device can capture the overall condition of the battery module and the connection status of the battery cells, obtain image data, and send it to the host computer; the host computer stores the data, providing a traceable basis for subsequent performance analysis.

[0217] In other examples, the barcode information of the battery module may be read first, and then the image data may be collected.

[0218] 9 , the present application further proposes a test method for a test system, the test system including a test circuit board, a test device, a host computer, and a slave computer. The test method includes the following steps:

[0219] Step S10: Sending a first test instruction to the lower computer, so that the lower computer controls the first branch connected to one of the two main circuits on the test circuit board to be electrically conductive with the positive electrode of the test equipment, and the second branch connected to the other main circuit to be electrically conductive with the negative electrode of the test equipment, so that the test equipment detects parameter information of the battery cell;

[0220] Step S20: Sending an instruction to read parameter information of the test equipment, and receiving and storing the parameter information.

[0221] In step S10 of the test method, the upper computer sends a first test instruction to the lower computer, and the lower computer can control the control switch that needs to be turned on, so that the first branch of a main circuit is electrically conductive with the positive pole of the test equipment, and the second branch of the other main circuit is electrically conductive with the negative pole of the test equipment. In this way, the test equipment can detect the parameter information of the battery cells of the battery module. The two main circuits 111 mentioned above can select two adjacent ones, or the corresponding two main circuits 111 can be selected according to the connector pin definition on the battery module wiring board. By analogy, the parameter information of multiple battery cells can be detected in sequence. The parameter information can be voltage data, resistance data or other parameters, etc. The test equipment is selected according to the test of the parameter information, for example, a multimeter, a voltmeter or an oscilloscope, etc. In step S20, the upper computer obtains the parameter information, stores it, and performs analysis and processing to determine the on-off status of the sampling harness of the battery module.

[0222] The test system method in this application can realize the sequential detection of multiple battery cells in the battery module without the need for manual repeated plugging and unplugging of wires, thereby improving detection efficiency and detection accuracy.

[0223] Referring to FIG. 10 , in one embodiment of the present application, the test device includes a multimeter having a voltage mode and a resistance mode and being electrically connected to a lower computer; the parameter information is voltage data; after sending an instruction to read the parameter information of the test device and receiving the stored parameter information in step S20, the method further includes:

[0224] Step S30: sending a second test instruction to the slave computer so that the slave computer controls the multimeter to switch to the resistance mode and obtain resistance data;

[0225] Step S40: sending an instruction to read resistance data of the multimeter, and receiving and storing the resistance data.

[0226] By sending the switching mode to the multimeter via the lower computer, signal transmission can be accelerated, control efficiency can be improved, and the switching efficiency of the multimeter can be higher. In other examples, the upper computer can also be directly connected to the multimeter and send a switching mode instruction to the multimeter. After the multimeter is in voltage mode and detects the voltage data of the battery cell, it receives the switching instruction and switches to resistance mode. The lower computer controls the control switches corresponding to the two main lines to close, just as it tests the voltage data, thereby connecting the multimeter and testing multiple NTC resistors one by one until all the battery cells to be tested are tested. While the test circuit is turned on, the test equipment can obtain the resistance data of the battery cell and store the resistance data directly. When the upper computer sends an instruction to read the parameter information, the test equipment then sends the parameter information to the upper computer. The upper computer stores it after receiving it and can also analyze it to determine whether the detection harness of the battery cell is connected or not. Alternatively, in other examples, the multimeter sends the resistance data directly to the upper computer while obtaining it.

[0227] This test method uses a multimeter to test the voltage and NTC resistance of each battery cell within the battery module, and then determines whether the sampling wiring harness within the battery module is connected or disconnected based on the test results. This method uses a multimeter to test two values, eliminating the need for repeated plugging and unplugging of the wiring harness, simplifying the structure and further improving test efficiency. It also protects the wiring harness and connectors, enhancing performance.

[0228] In one embodiment of the present application, after sending an instruction to read resistance data of a multimeter and receiving the stored resistance data in step S40, the method further includes:

[0229] Step S510: judging whether the sampling harness of the battery module is qualified based on the voltage data and resistance data, and uploading the test data to the general execution platform;

[0230] Or, step S520: if the sampling harness of the battery module is judged to be unqualified based on the voltage data and the resistance data, the test data is marked and uploaded to the general execution platform.

[0231] In step S510, the host computer can calculate the voltage difference of the battery cell based on the voltage data, and obtain the temperature value corresponding to the NTC resistor based on the resistance data. The actual voltage difference and temperature values ​​detected are compared with the standard voltage difference and temperature values. If they are consistent, it can be determined that the sampling harness at a certain position of the battery module is qualified, and the voltage, voltage difference, NTC temperature and other data of the single battery cell are stored locally and uploaded directly to the general execution platform.

[0232] In step S520, the judgment basis is the same as above. If the comparison results are inconsistent, it means that the sampling harness is faulty or disconnected. At this time, the obtained data needs to be marked and then uploaded to the general execution platform.

[0233] In this method, the wiring harness of the battery module can be detected through the processing of the host computer to quickly discover defects in the battery module and avoid rework. At the same time, different test results can be distinguished, thereby providing traceable data for subsequent processing.

[0234] Referring to FIG. 11 , in one embodiment of the present application, the test system further includes a test frame and a reading mechanism. The test frame forms a test channel. Before the step of sending the first test instruction to the lower computer, the test system further includes the following steps:

[0235] Step S11: Detecting that the test channel enters the battery module;

[0236] Step S12: Sending a command for reading the barcode of the battery module to a reading mechanism to read the barcode of the battery module;

[0237] Step S13: Obtain barcode information, and call the corresponding detection formula to trigger the detection mechanism according to the barcode information.

[0238] The test frame can provide a testing environment for the battery module, prevent external interference, and effectively improve the protection performance; it also facilitates the assembly and fixation of various components, such as the reading mechanism, provides support, and is compatible with the production line, thereby improving the overall testing efficiency of the battery module.

[0239] The reading mechanism can be a wireless radio frequency automatic identification device or a bar code scanner, which is not limited here. Due to the different structures and types of battery modules, a reading mechanism is set to read the bar code information of the battery module, thereby obtaining the corresponding type or structure of the battery module, which is convenient for the host computer to select the corresponding test scheme according to the type or structure of the battery module obtained. Therefore, before the host computer sends the test instruction, in step S01, the test channel is first inspected to determine whether there is a battery module that needs to be inspected entering. If so, the bar code information needs to be read first. In step S02, after the reading mechanism drives the bar code, the obtained bar code information is sent to the host computer. Then in step S03, the host computer retrieves the corresponding test scheme and test mechanism according to the bar code information, so that the control of the lower computer is more targeted and accurate.

[0240] The setting of the reading mechanism can perform more targeted detection according to different types of battery modules, thereby improving applicability and detection accuracy.

[0241] Referring to FIG. 12 , in one embodiment of the present application, the detection system further includes an image acquisition device, which, after detecting that the test channel has entered the battery module, sends an instruction to read the barcode of the battery module to the reading mechanism, and before reading the barcode of the battery module, further includes:

[0242] Step S111: sending an image acquisition instruction to an image acquisition device;

[0243] Step S112: Acquire and store image data of the battery module captured by the image acquisition device.

[0244] Here, the image acquisition device can capture and store the overall condition of the battery module and the connection condition of the battery cells, thereby providing a traceability basis for subsequent performance analysis.

[0245] The type of image acquisition device is not limited and can be a line scan camera, an area camera, a 3D camera, etc. This image acquisition device can capture the overall condition of the battery module and the connection status of the battery cells, obtain image data, and send it to the host computer; the host computer stores the data, providing a traceable basis for subsequent performance analysis.

[0246] In other examples, the barcode information of the battery module may be read first, and then the image data may be collected.

[0247] Example of a test process of a test system

[0248] After detecting incoming battery modules, the test system's host computer uses RFID to read the barcode information on the battery modules on the pallet and transmit it to the host computer. The host computer automatically calls the test recipe based on the barcode information and sends the test instructions to the slave computer.

[0249] The lower computer controls the on / off switching of the test circuit board. According to the test recipe requirements, the 64-pin aviation plug with the test harness connected to the battery module is connected to the positive and negative test leads of the multimeter. Specifically, the upper computer notifies the lower computer to test the voltage of the first battery cell and sends the required closed control switches (i.e., contacts K1 and K22) to the lower computer. The lower computer closes K1 and K22 to obtain the voltage of the first battery cell, and then tests each battery cell in sequence to obtain voltage data for multiple battery cells. Then, through communication between the upper computer and the multimeter, the high-precision multimeter switches the voltage, resistance mode, and gear position, or the lower computer communicates with the multimeter to achieve control of the switching mode and gear position, and the multimeter obtains resistance data for multiple battery cells in sequence.

[0250] The host computer sends instructions to read the voltage data and resistance data of the digital multimeter, calculate the single-cell voltage difference and the temperature corresponding to the NTC resistance, and store the voltage, voltage difference, NTC temperature and other data of the single battery cell in the local hard disk in a specified format, and upload them to the data traceability system at the same time.

[0251] The test system of the present application is an automatic testing device that can be used for continuity testing of battery module wiring harness sampling boards, and has the advantages of high compatibility, traceability, high test efficiency, high stability, and low cost.

[0252] Another embodiment of the test process of the test system:

[0253] When a battery module arrives, the lifting mechanism lifts it off the speed chain. The image acquisition device takes a photo and saves it. The operator then installs the test adapter harness and presses the start button.

[0254] The RFID reader reads the battery module's barcode. The lower computer receives the barcode and sends it to the upper computer, which automatically calls the test recipe based on the barcode information. The test is then performed according to the recipe. After the test is complete, the operator unplugs the test adapter harness, organizes it, and presses the release button. The battery module then exits the test system.

[0255] The first test recipe: the test equipment is controlled by the host computer.

[0256] 1. The upper computer sends all test item instructions to the lower computer at one time according to the recipe content;

[0257] 2. The host computer switches the multimeter mode and range according to the test items, and sends instructions to the slave computer simultaneously;

[0258] 3. The lower computer closes the corresponding control switch according to the instruction content of the first test item and notifies the upper computer that the closing action is completed;

[0259] 4. The host computer reads and saves the test result.

[0260] Follow the steps 2-3-4 to test the remaining items one by one.

[0261] The second test recipe: the test equipment is controlled by the lower computer.

[0262] 1. The upper computer sends all test item instructions to the lower computer at one time according to the recipe content;

[0263] 2. The host computer notifies the PLC to start the nth test;

[0264] 3. The lower computer controls the multimeter to switch to the corresponding mode (voltage / resistance) according to the instruction content of the test item, and synchronously closes the control switch of the corresponding test circuit;

[0265] 4. After the control switch is closed, the lower computer reads the multimeter test data and saves it to the data block specified by the test item.

[0266] 5. The host computer compares the data in the data block corresponding to the test item, obtains and saves the data, and displays it on the software interface.

[0267] Follow the steps 2-3-4-5 to test the remaining items one by one.

[0268] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application description and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A test system for testing the wiring harness connection and disconnection of a battery module, wherein the battery module comprises a plurality of battery cells connected in series and parallel, wherein: The test system comprises: A test circuit board, wherein the test circuit board is provided with a test circuit, wherein the test circuit includes a plurality of bus lines arranged side by side, wherein one end of each bus line is used to be connected to the positive electrode or the negative electrode of each battery cell of the battery module, and the other end of each bus line is connected to a first branch and a second branch; each of the first branches is provided with a control switch, and each of the second branches is provided with a control switch; A testing device, used to test parameter information of multiple battery cells of the battery module; A lower computer, the lower computer is electrically connected to the control switch to control a first branch connected to one of the main circuits to be electrically connected to the positive electrode of the test device, and a second branch connected to the other main circuit to be electrically connected to the negative electrode of the test device; and The upper computer is communicatively connected with the test device and the lower computer to control the operation of the lower computer and read parameter information of the test device.

2. The test system according to claim 1, wherein: A plurality of the first branches are connected at one end away from the main line to form a first connection end, a plurality of the second branches are connected at one end away from the main line to form a second connection end, one of the first connection end and the second connection end is electrically connected to the positive pole of the test device, and the other is electrically connected to the negative pole of the test device.

3. The test system as claimed in claim 2, wherein: There are at least two first connection ends, and at least two first connection ends are arranged in parallel; And / or, there are at least two second connection ends, and at least two second connection ends are arranged in parallel.

4. The test system according to any one of claims 1 to 3, wherein: The test circuit further comprises a plurality of fuses, each of which is arranged on one of the bus lines.

5. The test system according to any one of claims 1 to 4, wherein: The testing device is a multimeter, which includes a voltage mode and a resistance mode. The multimeter is electrically connected to the host computer or the slave computer to switch between the voltage mode and the resistance mode.

6. The test system according to any one of claims 1 to 5, wherein: The test system also includes a transfer test harness, one end of the plurality of bus lines is connected to an aviation plug, and two ends of the transfer test harness are respectively plugged into the aviation plug and the plug-in end of the battery module.

7. The test system of claim 6, wherein: The test system further comprises a reading mechanism, which is electrically connected to the host computer and is used to read the barcode information of the battery module and send it to the host computer. The host computer calls the test plan according to the barcode information.

8. The test system of claim 7, wherein: The test system also includes a test frame, which includes a plurality of horizontal beams and a plurality of vertical beams connected vertically and horizontally. The plurality of horizontal beams and the vertical beams enclose a test channel, and the test channel is for the battery module to pass through. The reading mechanism is arranged in the test channel.

9. The test system of claim 8, wherein: The test system also includes an image acquisition device, which is arranged on one of the beams and electrically connected to the host computer to take pictures and samples of the battery modules in the test channel and send them to the host computer.

10. The test system of claim 9, wherein: The test system further comprises a light source, which is arranged on another of the beams and located on one side of the image acquisition device; And / or, the test system further comprises a safety grating, which is arranged between two oppositely arranged vertical beams and is electrically connected to the host computer to block the test channel.

11. The test system according to any one of claims 8 to 10, wherein: The test system also includes an integrated cabinet, which is formed with a receiving cavity and is located on one side of the test frame. The test circuit board, the test equipment and the lower computer are all arranged in the receiving cavity, and the aviation plug is at least partially exposed in the integrated cabinet.

12. The test system of claim 11, wherein: The test system further comprises a warning member, which is mounted on the test frame and / or the integrated cabinet and is electrically connected to the host computer to reflect the operating status of the test system.

13. The test system according to any one of claims 8 to 12, wherein: The test system further comprises a human-machine interaction device, which is installed on the test frame and electrically connected to the host computer to display detection information or debug the test system.

14. The test system of claim 13, wherein: One of the vertical beams is rotatably connected to a mounting frame, and the human-machine interaction device is mounted on the mounting frame so as to be rotatably arranged on a horizontal plane relative to the test frame.

15. The test system according to any one of claims 8 to 14, wherein: The test system further comprises a storage member, which is arranged on one of the horizontal beams or vertical beams to store the transfer test harness.

16. The test system according to any one of claims 8 to 15, wherein: The test system further includes a starter, which is disposed on the periphery of the test frame, and the starter is provided with two starter parts, and the two starter parts are electrically connected to the host computer to start the test system; And / or, the test system further includes a card swiper, which is installed on the test frame and electrically connected to the host computer.

17. A method for testing a test system, wherein: The test system includes a test circuit board, a test device, a host computer and a slave computer, and the test method includes the steps of: The upper computer sends a test instruction to the lower computer; The lower computer receives the test instruction, and controls a first branch connected to one of the main circuits on the test circuit board to be electrically connected to the positive electrode of the test device, and a second branch connected to another main circuit to be electrically connected to the negative electrode of the test device; The testing device detects parameter information of the battery cell; The host computer sends an instruction to read parameter information of the test device, and receives and stores the parameter information.

18. The testing method of the testing system according to claim 17, wherein: The test equipment includes a multimeter, the multimeter has a voltage mode and a resistance mode, and is electrically connected to the lower computer, and the parameter information is voltage data; After the host computer sends an instruction to read the parameter information of the test device and receives and stores the parameter information, the process includes: The lower computer sends a switching mode instruction to the multimeter; The multimeter is switched to resistance mode; The lower computer controls the first branch connected to one of the two main circuits on the test circuit board to be electrically connected to the positive electrode of the test equipment, and the second branch connected to the other main circuit to be electrically connected to the negative electrode of the test equipment, so that the multimeter obtains resistance data; The host computer sends an instruction to read the resistance data of the multimeter, and receives and stores the resistance data.

19. The testing method of the testing system according to claim 18, wherein: After the host computer sends an instruction to read the resistance data of the multimeter and receives and stores the resistance data, the process further includes: The host computer determines that the sampling harness of the battery module is qualified according to the voltage data and the resistance data, and uploads the detection data to the general execution platform; Alternatively, the host computer determines that the sampling harness of the battery module is unqualified based on the voltage data and the resistance data, and then marks and uploads the detection data to the general execution platform.

20. The testing method of the testing system according to claim 17, wherein: The test system further comprises a test frame and a reading mechanism, wherein the test frame is formed with a test channel; Before the step of sending the test instruction from the host computer to the slave computer, the step further includes: After the host computer detects that the test channel enters the battery module, it sends an instruction to read the barcode of the battery module to the reading mechanism; The reading mechanism reads the barcode of the battery module and sends the barcode information to the host computer; The host computer automatically calls the corresponding detection formula according to the barcode information and triggers the detection mechanism.

21. The testing method of the testing system according to claim 20, wherein: The detection system further includes an image acquisition device. After the host computer detects that the test channel enters the battery module, before the step of sending an instruction to read the barcode of the battery module to the reading mechanism, it also includes: The host computer sends an image acquisition instruction to the image acquisition device; The image acquisition device acquires image data of the battery module and sends it to the host computer; The host computer receives and stores the image data.

22. A method for testing a test system, wherein: The test system includes a test circuit board, a test device, a host computer and a slave computer, and the test method includes the steps of: Sending a first test instruction to a lower computer, so that the lower computer controls a first branch connected to one of two main circuits on the test circuit board to be electrically connected to the positive electrode of the test equipment, and a second branch connected to the other main circuit to be electrically connected to the negative electrode of the test equipment, so that the test equipment detects parameter information of the battery cell; Send an instruction to read parameter information of the test equipment, and receive and store the parameter information.

23. The testing method of the testing system according to claim 22, wherein: The test equipment includes a multimeter, the multimeter has a voltage mode and a resistance mode, and is electrically connected to the lower computer, and the parameter information is voltage data; After sending an instruction to read parameter information of the test device and receiving and storing the parameter information, the method further includes: Sending a second test instruction to the lower computer so that the lower computer controls the multimeter to switch to a resistance mode and obtain resistance data; An instruction to read resistance data of a multimeter is sent, and the resistance data is received and stored.

24. The testing method of the testing system according to claim 23, wherein: After sending an instruction to read the resistance data of the multimeter and receiving and storing the resistance data, the method further includes: If the sampling harness of the battery module is determined to be qualified according to the voltage data and the resistance data, the detection data is uploaded to the general execution platform; Or, if it is determined based on the voltage data and resistance data that the sampling harness of the battery module is unqualified, the detection data is marked and uploaded to the general execution platform.

25. The testing method of the testing system according to claim 22, wherein: The test system further includes a test frame and a reading mechanism, wherein the test frame forms a test channel, and before the step of sending the first test instruction to the lower computer, the test system further includes the following steps: Detecting that the test channel enters the battery module; Sending an instruction for reading the barcode of the battery module to a reading mechanism to read the barcode of the battery module; The barcode information is obtained, and a corresponding detection formula is called according to the barcode information to trigger a detection mechanism.

26. The testing method of the testing system according to claim 25, wherein: The detection system further includes an image acquisition device, which sends an instruction to read the barcode of the battery module to a reading mechanism after detecting that the test channel enters the battery module, and before the step of reading the barcode of the battery module, further includes: Sending an image acquisition instruction to an image acquisition device; The image data of the battery module captured by the image acquisition device is acquired and stored.

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