Battery assembly test method, system and device based on image acquisition

Abstract

The invention discloses a battery assembly test method, system and device based on image acquisition, and the method comprises the steps: collecting the images of a to-be-tested battery assembly through n image acquisition devices, obtaining n test images, and placing the to-be-tested battery assembly on a first test table; determining an initial position of the to-be-tested battery assembly on a first test table according to the n test images; according to the initial position of the to-be-tested battery assembly, transferring the to-be-tested battery assembly to a probe row test table, and testing the to-be-tested battery assembly through a battery assembly tester; and after the test is completed, the to-be-tested battery assembly is transferred to the second test table, so that the to-be-tested battery assembly is conveyed to the corresponding material box. By analyzing and fusing the images acquired by the n image acquisition devices, more accurate positioning of the to-be-tested battery assembly can be obtained, and the accuracy and efficiency of testing the battery assembly are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell detection, and in particular, to a battery component testing method, system and device based on image acquisition. Background Art

[0002] In the field of electronic equipment manufacturing, the production and testing of cells are crucial links. Among them, electroluminescence (EL) testing and current-voltage (IV) testing are two important test items, which are of great significance for evaluating the quality and performance of cells. During these tests, the cells need to be precisely positioned to ensure the accuracy and efficiency of the tests.

[0003] In the existing technology, the positioning of the battery cell is completed by grabbing the edge of the camera and taking pictures. This method can achieve a certain degree of positioning accuracy. However, due to the influence of factors such as the shooting angle of the single camera and lighting conditions, the edge recognition of the battery cell may be inaccurate, thus affecting the positioning accuracy. In the case of low positioning accuracy, the position adjustment range of the battery cell is still large, which affects the efficiency and accuracy of the test to a certain extent. The battery cell that is rotated to the test table after grasping the edge for positioning often exceeds the motor test range of the table, resulting in an alarm. Therefore, the existing test system often cannot achieve full automation and requires manual intervention, which limits its application scope and practicality to a certain extent.

[0004] Therefore, people in this field are in urgent need of finding a new technical solution to solve the above problems. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the present invention discloses a battery component testing method, system and device based on image acquisition.

[0006] According to a first aspect of the disclosed embodiment of the present invention, a battery component testing method based on image acquisition is provided, which is applied to a battery component testing system, wherein the testing system comprises: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery component tester; the method comprises:

[0007] Using n image acquisition devices to respectively acquire images of the battery assembly to be tested, and obtain n test images, wherein the battery assembly to be tested is placed on the first test table;

[0008] Determine the initial position of the battery assembly to be tested on the first test table according to the n test images;

[0009] According to the initial position of the battery assembly to be tested, the battery assembly to be tested is moved to the probe row test table, and the battery assembly to be tested is tested by a battery assembly tester;

[0010] After the test is completed, the battery assembly to be tested is moved to the second test table to transfer the battery assembly to be tested to the corresponding material box.

[0011] Optionally, determining the initial position of the battery assembly to be tested on the first test table according to the n test images includes:

[0012] Determining a first relative position relationship between each image acquisition device and the battery assembly to be tested;

[0013] Based on the test images captured by each image acquisition device and the first relative position relationship, the second relative position relationship between the battery assembly to be tested in each test image and the first test surface is determined, so as to determine the initial position of the battery assembly to be tested on the first test surface based on the second relative position relationship.

[0014] Optionally, the image acquisition device is a camera, n=4, and the second relative position relationship between the battery assembly to be tested and the first test surface in each test image is determined according to the test image acquired by each image acquisition device and the first relative position relationship, so as to determine the initial position of the battery assembly to be tested on the first test surface according to the second relative position relationship, including:

[0015] According to the projection matrix P of the i-th camera i =K i [R i |t i ](i=1,2,3,4) and the pixel coordinate value X of the first calibration point in the test image i (x i ,y i ) Determine the first coordinate value Y of the first calibration point in the first test bench coordinate system i =X i P i , where R i represents the rotation angle of the i-th camera relative to the world coordinate system, t i Represents the translation distance of the i-th camera relative to the world coordinate system;

[0016] Take the average value of the first coordinate values ​​Y1 (x′1, y′1), Y2 (x′2, y′2), Y3 (x′3, y′3) and Y4 (x′4, y′4) in the four test images to determine the initial position (x′, y′) of the battery assembly to be tested on the first test table.

[0017] Optionally, the step of moving the battery assembly to be tested to a probe row test table according to an initial position of the battery assembly to be tested includes:

[0018] Adjusting the position of the battery assembly to be tested according to the initial position so that a first calibration point of the battery assembly to be tested coincides with a second calibration point of the first test table;

[0019] The battery assembly to be tested is transferred to a probe row test table.

[0020] Optionally, testing the battery assembly to be tested by a battery assembly tester includes:

[0021] Adjusting the position of the battery assembly to be tested by the probe row fixture on the probe row test table so that the first calibration point of the battery assembly to be tested coincides with the third calibration point of the probe row test table;

[0022] The battery assembly to be tested is tested by a battery assembly tester.

[0023] According to a second aspect of the disclosed embodiment of the present invention, there is provided a battery component testing system based on image acquisition, the system comprising: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery component tester;

[0024] The first test table is used to place the battery assembly to be tested, and the n image acquisition devices are arranged above the first test table and are used to respectively acquire test images of the battery assembly to be tested from different shooting angles;

[0025] The first test table, the probe row test table and the second test table are connected via a rotating shaft, and the rotating shaft is used to rotate and transfer the battery assembly to be tested.

[0026] According to a third aspect of the disclosed embodiment of the present invention, a battery component testing device based on image acquisition is provided, which is applied to a battery component testing system, wherein the testing system comprises: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery component tester; the device comprises:

[0027] An image acquisition module, which acquires images of the battery assembly to be tested by using n image acquisition devices respectively to obtain n test images, wherein the battery assembly to be tested is placed on the first test table;

[0028] A position determination module, connected to the image acquisition module, for determining an initial position of the battery assembly to be tested on the first test table according to the n test images;

[0029] A battery assembly testing module is connected to the position determination module, and moves the battery assembly to be tested to the probe row test table according to the initial position of the battery assembly to be tested, and tests the battery assembly to be tested by a battery assembly tester;

[0030] The battery component transfer module is connected to the battery component testing module, and after the test is completed, the battery component to be tested is transferred to the second testing table to transfer the battery component to be tested to the corresponding material box.

[0031] Optionally, the location determination module includes:

[0032] A relative position determination unit, which determines a first relative position relationship between each image acquisition device and the battery assembly to be tested;

[0033] An initial position determination unit is connected to the relative position determination unit, and determines the second relative position relationship between the battery assembly to be tested in each test image and the first test surface according to the test image captured by each image acquisition device and the first relative position relationship, so as to determine the initial position of the battery assembly to be tested on the first test surface according to the second relative position relationship.

[0034] Optionally, the battery assembly test module includes:

[0035] A first position adjustment unit, which adjusts the position of the battery assembly to be tested according to the initial position, so that a first calibration point of the battery assembly to be tested coincides with a second calibration point of the first test table;

[0036] The battery assembly transfer unit is connected to the first position adjustment unit and transfers the battery assembly to be tested to the probe row test table.

[0037] Optionally, the battery assembly testing module further includes:

[0038] A second position adjustment unit is used to adjust the position of the battery assembly to be tested by using a probe row fixture on the probe row test table, so that the first calibration point of the battery assembly to be tested coincides with the third calibration point of the probe row test table;

[0039] A battery assembly testing unit is connected to the second position adjustment unit and is used to test the battery assembly to be tested by a battery assembly tester.

[0040] In summary, the present invention discloses a battery component testing method, system and device based on image acquisition, the method comprising: acquiring images of the battery component to be tested respectively by n image acquisition devices, obtaining n test images, and the battery component to be tested is placed on the first test table; determining the initial position of the battery component to be tested on the first test table according to the n test images; transferring the battery component to be tested to the probe row test table according to the initial position of the battery component to be tested, and testing the battery component to be tested by a battery component tester; after the test is completed, the battery component to be tested is transferred to the second test table to transfer the battery component to be tested to the corresponding material box. It is possible to obtain a more accurate positioning of the battery component to be tested by analyzing and fusing the images collected by the n image acquisition devices, greatly improving the accuracy and efficiency of the battery component test. For the electronic equipment manufacturing industry, it helps to improve the quality and performance of products and meet consumers' demand for high-quality electronic products.

[0041] Since n image acquisition devices collect n test images from different shooting angles, the preliminary preparations for the battery component test are completed, more accurate positioning is achieved, and the vertical and horizontal position adjustment range of the battery cell is smaller, thereby improving the accuracy of the test. Since the position adjustment range of the battery cell is small, the test can be completed in a short time, thereby improving the efficiency of the test.

[0042] Other features and advantages disclosed in the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0044] Figure 1 is a flow chart of a battery assembly testing method based on image acquisition according to an exemplary embodiment;

[0045] Figure 2 is a schematic diagram of a battery assembly testing system based on image acquisition according to an exemplary embodiment;

[0046] Figure 3 is based on Figure 1 A schematic flow chart of a method for determining a position is shown;

[0047] Figure 4 is based on Figure 1 A flow chart of a battery assembly testing method is shown;

[0048] Figure 5is a structural block diagram of a battery assembly testing device based on image acquisition according to an exemplary embodiment;

[0049] Figure 6 is based on Figure 5 A structural block diagram of a position determination module is shown;

[0050] Figure 7 is based on Figure 5 A structural block diagram of a battery assembly test module is shown. DETAILED DESCRIPTION

[0051] The specific embodiments disclosed in the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0052] Figure 1 is a flow chart of a battery assembly testing method based on image acquisition according to an exemplary embodiment. Figure 1 As shown, the method is applied to the battery component test system, such as Figure 2 As shown, the system includes: a first test table 201, a second test table 202, a probe row test table 203, n image acquisition devices 204 and a battery component tester (not shown in the figure); the first test table 201 is used to place the battery component 205 to be tested, and the n image acquisition devices 204 are arranged above the first test table 201, and are used to collect test images of the battery component 205 to be tested from different shooting angles; the first test table 201, the probe row test table 203 and the second test table 202 are connected by a rotating shaft, and the rotating shaft is used to rotate and transfer the battery component 205 to be tested. It is understandable that in the production and testing process of the battery assembly, the battery assembly needs to be tested for electroluminescence (EL) and current-voltage (IV). The disclosed embodiment of the present invention provides a fully automatic battery assembly testing system, which transfers the battery assembly 205 to be tested to the first test table 201 through a conveyor belt and completes the positioning. The positioning here needs to be completed with the assistance of n image acquisition devices 204 arranged on the first test table 201, and the specific position is determined by analyzing the collected test image. After positioning, the battery assembly 205 to be tested is rotated to the probe row test table 203 through the rotating shaft, and the battery assembly 205 to be tested is finely adjusted up and down and left and right through the probe row fixture to ensure the accurate completion of the test. A battery assembly tester is needed during the test process. After the test is completed, the battery assembly 205 to be tested is transferred to the second test table 202 through the rotating shaft. On the second test table 202, the battery assembly 205 to be tested can be sent to different material boxes through the conveyor belt.

[0053] Specifically, the method includes:

[0054] In step 101, images of the battery assembly to be tested are respectively captured by n image acquisition devices to obtain n test images.

[0055] The battery assembly to be tested is placed on the first test table.

[0056] For example, n image acquisition devices are respectively arranged at different positions above the first test table to photograph the battery assembly to be tested from different shooting angles, obtain n test images, analyze and process the n test images, and thus calculate the precise position of the battery assembly to be tested relative to the first test table.

[0057] In step 102, the initial position of the battery assembly to be tested on the first test table is determined according to n test images.

[0058] By way of example, it can be understood that the n test images are acquired by n image acquisition devices respectively from different shooting angles. Due to the limitation of the shooting angle, there will be a certain deviation in the position of the battery component to be tested displayed in each test image. Therefore, the initial position of the battery component to be tested relative to the first test table is calculated by processing and analyzing the n test images.

[0059] Typically, the initial position is represented by the position of a specific point (ie, a first calibration point) on the battery cell to be tested relative to the first test surface.

[0060] Specifically, Figure 3 is based on Figure 1 A flow chart of a method for determining a position is shown in FIG. Figure 3 As shown, step 102 includes:

[0061] In step 1021, a first relative position relationship between each image acquisition device and the battery assembly to be tested is determined.

[0062] For example, the image acquisition device is a camera, n=4, and the four cameras are respectively located above the four corners of the first test table. The positional relationship of each image acquisition device relative to the battery assembly to be tested is the shooting angle of the image acquisition device relative to the first test table. Taking four cameras as an example, in order to determine the first relative positional relationship of each camera relative to the battery assembly to be tested, it is assumed that the camera coordinate system where the first camera is located is the reference coordinate system (it can also be understood as taking the coordinate system as the world coordinate system), and the rotation angle and translation distance of the camera coordinate system of the other three cameras relative to the reference coordinate system are obtained to determine the relative positional relationship between the four cameras, thereby determining the first relative positional relationship between each image acquisition device and the battery assembly to be tested.

[0063] In step 1022, based on the test images captured by each image acquisition device and the first relative position relationship, the second relative position relationship between the battery assembly to be tested in each test image and the first test surface is determined, so as to determine the initial position of the battery assembly to be tested on the first test surface based on the second relative position relationship.

[0064] For example, a first calibration point (i.e., mark point) is set on the battery assembly to be tested. When the battery assembly to be tested is placed on a first test table, the coordinate value of the first calibration point in the coordinate system of the first test table is used to represent the second relative position relationship of the battery assembly to be tested relative to the first test table, i.e., the initial position of the battery assembly to be tested on the first test table.

[0065] Specifically, according to the projection matrix P of the i-th camera i =K i [R i |t i ](i=1,2,3,4) and the pixel coordinate value X of the first calibration point in the test image i (x i ,y i ) Determine the first coordinate value Y of the first calibration point in the first test bench coordinate system i =X i P i , where R i represents the rotation angle of the i-th camera relative to the world coordinate system, t i Represents the translation distance of the i-th camera relative to the world coordinate system; take the average of the first coordinate values ​​Y1(x′1,y′1), Y2(x′2,y′2), Y3(x′3,y′3) and Y4(x′4,y′4) in the four test images to determine the initial position (x′,y′) of the battery assembly to be tested on the first test table.

[0066] For example, when the battery assembly to be tested is placed on the first test table, the captured test image is corrected by the projection matrix of the camera to determine the actual first coordinate value of the first calibration point in the first test table coordinate system according to the position of the first calibration point displayed in the test image. When the correction is performed by the projection matrix of four cameras, four first coordinate values ​​are obtained, and the average of the four first coordinate values ​​is calculated to obtain a more accurate initial position of the battery assembly to be tested.

[0067] In step 103, the battery assembly to be tested is transferred to a probe row test table according to the initial position of the battery assembly to be tested, and the battery assembly to be tested is tested by a battery assembly tester.

[0068] For example, before the battery assembly to be tested is moved to the probe row test table for EL test and / or IV test, the position of the battery assembly to be tested on the first test table is adjusted to make the position of the battery sheet transfer process more accurate.

[0069] Specifically, Figure 4 is based on Figure 1 A flow chart of a battery assembly testing method is shown in FIG. Figure 4 As shown, step 103 includes:

[0070] In step 1031, the position of the battery assembly to be tested is adjusted according to the initial position so that the first calibration point of the battery assembly to be tested coincides with the second calibration point of the first test table.

[0071] In step 1032, the battery assembly to be tested is transferred to a probe row test table.

[0072] For example, a second calibration point is also set on the first test table. When the position of the battery assembly to be tested is placed without deviation, the first calibration point coincides with the second calibration point. Therefore, the battery assembly to be tested can be moved according to the coordinate value of the first calibration point calculated according to the above steps 101-102, so that the coordinate value of the first calibration point is the same as the coordinate value of the second calibration point (it can be understood that the coordinate values ​​of the two are relative to the coordinate system of the first test table), that is, the two coincide.

[0073] like Figure 4 As shown, step 103 also includes:

[0074] In step 1033, the position of the battery assembly to be tested is adjusted by the probe row fixture on the probe row test surface so that the first calibration point of the battery assembly to be tested coincides with the third calibration point of the probe row test surface.

[0075] In step 1034, the battery assembly to be tested is tested by a battery assembly tester.

[0076] For example, similarly, the probe row test table is also provided with a third calibration point, and when the position of the battery assembly to be tested is placed on the probe row test table without deviation, the first calibration point coincides with the third calibration point. Before the battery assembly to be tested is tested on the probe row test table, the position of the battery assembly to be tested is adjusted again so that the first calibration point coincides with the third calibration point (i.e., the coordinate value of the first calibration point in the probe row test table coordinate system is the same as the coordinate value of the third calibration point in the probe row test table coordinate system). Since the battery assembly to be tested has been adjusted once on the first test table, the position of the battery assembly to be tested relative to the probe row test table will not have too much deviation, and it is only due to the slight deviation caused by the shaking of the rotating shaft during the transfer process. Therefore, in this step, the battery assembly to be tested can be slightly adjusted by the probe row fixture, so as to avoid the occurrence of situations such as battery assembly scratches caused by the probe row fixture greatly adjusting the position of the battery assembly, reduce the time consumption in the test process, and improve the efficiency and accuracy of the test. At the same time, the time consumption in the test process can also be reduced, and the efficiency and accuracy of the test can be improved.

[0077] In step 104 , after the test is completed, the battery assembly to be tested is moved to a second test table to transfer the battery assembly to be tested to a corresponding material box.

[0078] The above steps 101 to 104 can realize a fully automatic battery component testing process through computer programming, achieving complete automation without manual intervention, greatly expanding its application scope and practicality, reducing errors caused by manual operation, and further improving the accuracy of the test. The fully automatic test system in the disclosed embodiment of the present invention has good adaptability to different battery components and different test environments, has strong versatility, reduces dependence on manual intervention, and realizes true automated testing, which is of great significance for improving the efficiency of the test system and reducing costs.

[0079] Figure 5 is a structural block diagram of a battery assembly testing device based on image acquisition according to an exemplary embodiment, such as Figure 5 As shown, it is applied to a battery component test system, the test system includes: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery component tester; the device 500 includes:

[0080] An image acquisition module 510 acquires images of the battery assembly to be tested by using n image acquisition devices respectively to obtain n test images, and the battery assembly to be tested is placed on a first test table;

[0081] A position determination module 520, connected to the image acquisition module 510, determines the initial position of the battery assembly to be tested on the first test table according to the n test images;

[0082] The battery assembly testing module 530 is connected to the position determination module 520, and moves the battery assembly to be tested to the probe row test table according to the initial position of the battery assembly to be tested, and tests the battery assembly to be tested by the battery assembly tester;

[0083] The battery assembly transfer module 540 is connected to the battery assembly test module 530. After the test is completed, the battery assembly to be tested is transferred to the second test table to transfer the battery assembly to be tested to the corresponding material box.

[0084] Figure 6 is based on Figure 5 A structural block diagram of a position determination module is shown in FIG. Figure 6 As shown, the location determination module 520 includes:

[0085] A relative position determination unit 521 determines a first relative position relationship between each image acquisition device and the battery assembly to be tested;

[0086] The initial position determination unit 522 is connected to the relative position determination unit 521, and determines the second relative position relationship between the battery assembly to be tested and the first test surface in each test image according to the test image captured by each image acquisition device and the first relative position relationship, so as to determine the initial position of the battery assembly to be tested on the first test surface according to the second relative position relationship.

[0087] Figure 7 is based on Figure 5 A structural block diagram of a battery component test module is shown in FIG. Figure 7 As shown, the battery assembly test module 530 includes:

[0088] A first position adjustment unit 531 adjusts the position of the battery assembly to be tested according to the initial position so that the first calibration point of the battery assembly to be tested coincides with the second calibration point of the first test table;

[0089] The battery assembly transfer unit 532 is connected to the first position adjustment unit 531 and transfers the battery assembly to be tested to the probe row test table.

[0090] like Figure 7 As shown, the battery assembly testing module 530 further includes:

[0091] The second position adjustment unit 533 adjusts the position of the battery assembly to be tested by using the probe row fixture on the probe row test table, so that the first calibration point of the battery assembly to be tested coincides with the third calibration point of the probe row test table;

[0092] The battery assembly testing unit 534 is connected to the second position adjustment unit 533 and tests the battery assembly to be tested through a battery assembly tester.

[0093] In summary, the present invention discloses a battery component testing method, system and device based on image acquisition, the method comprising: acquiring images of the battery component to be tested respectively by n image acquisition devices, obtaining n test images, and the battery component to be tested is placed on the first test table; determining the initial position of the battery component to be tested on the first test table according to the n test images; transferring the battery component to be tested to the probe row test table according to the initial position of the battery component to be tested, and testing the battery component to be tested by a battery component tester; after the test is completed, transferring the battery component to be tested to the second test table to transfer the battery component to be tested to the corresponding material box. By analyzing and fusing the images acquired by the n image acquisition devices, a more accurate positioning of the battery component to be tested can be obtained, which greatly improves the accuracy and efficiency of the battery component test.

[0094] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0095] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0096] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery component testing method based on image acquisition, characterized in that: Applied to a battery component test system, the test system comprises: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery component tester; the method comprises: Using n image acquisition devices to respectively acquire images of the battery assembly to be tested, and obtain n test images, wherein the battery assembly to be tested is placed on the first test table; Determine the initial position of the battery assembly to be tested on the first test table according to the n test images; According to the initial position of the battery assembly to be tested, the battery assembly to be tested is moved to the probe row test table, and the battery assembly to be tested is tested by a battery assembly tester; After the test is completed, the battery assembly to be tested is moved to the second test table to transfer the battery assembly to be tested to the corresponding material box.

2. The battery component testing method based on image acquisition according to claim 1, characterized in that: The step of determining the initial position of the battery assembly to be tested on the first test table according to the n test images comprises: Determining a first relative position relationship between each image acquisition device and the battery assembly to be tested; Based on the test images captured by each image acquisition device and the first relative position relationship, the second relative position relationship between the battery assembly to be tested in each test image and the first test surface is determined, so as to determine the initial position of the battery assembly to be tested on the first test surface based on the second relative position relationship.

3. The battery component testing method based on image acquisition according to claim 2, characterized in that: The image acquisition device is a camera, n=4, and the second relative position relationship between the battery assembly to be tested and the first test surface in each test image is determined according to the test image acquired by each image acquisition device and the first relative position relationship, so as to determine the initial position of the battery assembly to be tested on the first test surface according to the second relative position relationship, including: According to the projection matrix P of the i-th camera i =K i [R i |t i ](i=1,2,3,4) and the pixel coordinate value X of the first calibration point in the test image i (x i ,y i ) Determine the first coordinate value Y of the first calibration point in the first test bench coordinate system i =X i P i , where R i represents the rotation angle of the i-th camera relative to the world coordinate system, t i Represents the translation distance of the i-th camera relative to the world coordinate system; Take the average value of the first coordinate values ​​Y1 (x′1, y′1), Y2 (x′2, y′2), Y3 (x′3, y′3) and Y4 (x′4, y′4) in the four test images to determine the initial position (x′, y′) of the battery assembly to be tested on the first test table.

4. The battery component testing method based on image acquisition according to claim 1, characterized in that: The method of moving the battery assembly to be tested to a probe row test table according to the initial position of the battery assembly to be tested comprises: Adjusting the position of the battery assembly to be tested according to the initial position so that a first calibration point of the battery assembly to be tested coincides with a second calibration point of the first test table; The battery assembly to be tested is transferred to a probe row test table.

5. The battery component testing method based on image acquisition according to claim 1, characterized in that: The step of testing the battery assembly to be tested by a battery assembly tester comprises: Adjusting the position of the battery assembly to be tested by the probe row fixture on the probe row test table so that the first calibration point of the battery assembly to be tested coincides with the third calibration point of the probe row test table; The battery assembly to be tested is tested by a battery assembly tester.

6. A battery component testing system based on image acquisition, characterized in that: The system comprises: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery assembly tester; The first test table is used to place the battery assembly to be tested, and the n image acquisition devices are arranged above the first test table and are used to respectively acquire test images of the battery assembly to be tested from different shooting angles; The first test table, the probe row test table and the second test table are connected via a rotating shaft, and the rotating shaft is used to rotate and transfer the battery assembly to be tested.

7. A battery assembly testing device based on image acquisition, characterized in that: Applicable to a battery component test system, the test system comprises: a first test table, a second test table, a probe row test table, n image acquisition devices and a battery component tester; the device comprises: An image acquisition module, which acquires images of the battery assembly to be tested by using n image acquisition devices respectively to obtain n test images, wherein the battery assembly to be tested is placed on the first test table; A position determination module, connected to the image acquisition module, for determining an initial position of the battery assembly to be tested on the first test table according to the n test images; A battery assembly testing module is connected to the position determination module, and moves the battery assembly to be tested to the probe row test table according to the initial position of the battery assembly to be tested, and tests the battery assembly to be tested by a battery assembly tester; The battery component transfer module is connected to the battery component testing module, and after the test is completed, the battery component to be tested is transferred to the second testing table to transfer the battery component to be tested to the corresponding material box.

8. The battery component testing device based on image acquisition according to claim 7, characterized in that: The position determination module comprises: A relative position determination unit, which determines a first relative position relationship between each image acquisition device and the battery assembly to be tested; An initial position determination unit is connected to the relative position determination unit, and determines the second relative position relationship between the battery assembly to be tested in each test image and the first test surface according to the test image captured by each image acquisition device and the first relative position relationship, so as to determine the initial position of the battery assembly to be tested on the first test surface according to the second relative position relationship.

9. The battery assembly testing device based on image acquisition according to claim 7, characterized in that: The battery assembly test module comprises: A first position adjustment unit, which adjusts the position of the battery assembly to be tested according to the initial position, so that a first calibration point of the battery assembly to be tested coincides with a second calibration point of the first test table; The battery assembly transfer unit is connected to the first position adjustment unit and transfers the battery assembly to be tested to the probe row test table.

10. The battery component testing device based on image acquisition according to claim 7, characterized in that: The battery assembly test module further includes: A second position adjustment unit is used to adjust the position of the battery assembly to be tested by using a probe row fixture on the probe row test table, so that the first calibration point of the battery assembly to be tested coincides with the third calibration point of the probe row test table; A battery assembly testing unit is connected to the second position adjustment unit and is used to test the battery assembly to be tested by a battery assembly tester.

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