Battery cell testing device

Abstract

The utility model relates to a battery module assembly technology, and provides a battery cell testing device which comprises a tray arranged on a rack, a detection device, a normal battery cell bin, a normal battery cell bin, a fault battery cell bin and a transfer device. And the transfer device is used for mutually transferring the battery cells among the supporting plate, the normal battery cell bin and the fault battery cell bin. According to the scheme, the transfer device and the two battery cell bins are arranged, when the equipment detects the faulty battery cell, the faulty battery cell on the tray can be clamped out and put into the faulty battery cell bin, and then the normal battery cell in the normal battery cell bin is clamped out and put into the vacant position of the tray, so that replacement of the faulty battery cell is realized. Through the automatic clamping and replacing functions, the equipment can reduce manual intervention and downtime, and the detection efficiency is improved. According to the automatic fault cell processing system, the requirements of manual operation and management can be reduced, the labor cost is reduced, and the possibility of misoperation caused by human factors is reduced.

Description

Technical Field

[0001] The utility model relates to a battery module assembly technology, in particular to a battery core testing device. Background Art

[0002] Battery cell testing is a crucial step in the battery cell production process. The main purpose of battery cell testing is to ensure the quality, performance and safety of the battery cells to meet product specifications and industry standards.

[0003] Generally, the tested battery cells are divided into OK battery cells (normal battery cells that passed the test) and NG battery cells (faulty battery cells that failed the test). In the prior art, after the NG battery cells are detected, they are generally eliminated manually, which is time-consuming and labor-intensive, and once a manual error occurs, the NG battery cells will flow into the subsequent process. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a battery cell testing device to improve the testing efficiency.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a battery cell testing device, including a tray arranged on a frame:

[0006] Tray, used to place the battery cells to be tested;

[0007] A detection device, used to detect whether the battery cell to be detected on the tray is a faulty battery cell;

[0008] Normal battery cell compartment, used to store normal battery cells;

[0009] Faulty battery cell compartment, used to store faulty battery cells;

[0010] The transfer device is used to transfer the battery cells between the pallet and the normal battery cell bin and the faulty battery cell bin.

[0011] In a specific embodiment of the present utility model, the transfer device includes a moving device, which includes a first moving seat arranged on a frame and moving along a first direction, a second moving seat moving along a second direction is arranged on the first moving seat, and a third moving seat moving along a third direction is arranged on the second moving seat, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In a specific embodiment of the present utility model, the transfer device includes a chuck, which is arranged on the third movable seat, and the chuck includes clamping plates that approach or move away from each other along the second direction.

[0013] In a specific embodiment of the present invention, the detection device is arranged on the third movable seat.

[0014] In a specific embodiment of the present utility model, the detection device includes a battery OCV tester and a code scanning device.

[0015] In a specific embodiment of the present utility model, a conveying track section connected with the conveying track is arranged on the frame, and the tray is arranged on the conveying track section and moves along the conveying track.

[0016] In a specific embodiment of the present utility model, the normal battery cell compartment is provided with a plurality of normal battery cell storage positions, the faulty battery cell compartment is provided with a plurality of faulty battery cell storage positions, and the tray is provided with a plurality of to-be-tested battery cell storage positions.

[0017] In a specific embodiment of the present invention, the number of the normal battery cell storage positions is the same as the number of the faulty battery cell storage positions and the to-be-detected battery cell storage positions.

[0018] In a specific embodiment of the present invention, a lifting mechanism is provided on the tray for driving the tray to move along the third direction to the detection position.

[0019] In a specific embodiment of the present invention, a plurality of first sensors for detecting whether the battery cells exist are arranged on the rack, and the plurality of first sensors are respectively directed toward a plurality of storage positions of the battery cells to be detected on the tray located at the detection position.

[0020] In a specific embodiment of the present invention, the normal battery cell storage position and the faulty battery cell storage position are provided with a second sensor for detecting whether there are battery cells thereon.

[0021] In a specific embodiment of the utility model, the normal battery cell storage position includes four battery cell positioning blocks arranged on a horizontal plane, the four battery cell positioning blocks are arranged at the four corners of a rectangle, the upper part of the battery cell positioning block is concave to form a storage surface for placing normal battery cells, the storage surface is connected to the upper end surface of the battery cell positioning block by a guide slope, and the faulty battery cell storage position has the same structure as the normal battery cell storage position.

[0022] In a specific embodiment of the present invention, the normal battery cell bin is located between the faulty battery cell bin and the tray in the first direction.

[0023] The utility model proposes a battery cell testing device. In the above scheme, a transfer device and two battery cell bins are provided. When the device detects a faulty battery cell, the faulty battery cell on the tray can be clamped out and placed in the faulty battery cell bin, and then the normal battery cell in the normal battery cell bin can be clamped out and placed in the missing space of the tray to achieve the replacement of the faulty battery cell. Through the automatic clamping and replacement functions, the equipment can reduce manual intervention and downtime, and improve detection efficiency. The automated faulty battery cell processing system can reduce the need for manual operation and management, reduce labor costs, and reduce the possibility of misoperation due to human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a three-dimensional diagram of a battery cell testing device in one embodiment of the utility model;

[0026] Figure 2 It is a structural schematic diagram of a normal battery cell storage position of a battery cell testing device in one embodiment of the utility model.

[0027] Explanation of the reference numerals: 10. rack; 20. detection device; 30. normal battery cell bin; 31. normal battery cell storage position; 32. second sensor; 33. battery cell positioning block; 40. faulty battery cell bin; 50. transfer device; 51. first movable seat; 52. second movable seat; 53. third movable seat; 54. chuck; 60. tray; 61. lifting mechanism; 70. conveying track section; 80. first sensor. DETAILED DESCRIPTION

[0028] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. During actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] In cell testing, such as cell OCV testing, the battery cells are disconnected from the external circuit and allowed to reach their natural open circuit voltage without external interference. The value of this open circuit voltage is then measured. This test can be performed after the battery is charged or discharged, or when the battery is at rest. Cell OCV testing is an important part of the battery production system. It provides important information about the battery status and performance, helping to ensure the safety, reliability and performance of the battery.

[0031] There are some problems with manual removal of NG cells, including time-consuming, labor-intensive, and potential human errors. To solve these problems, it is possible to consider introducing automated equipment and technology to replace or assist manual removal.

[0032] like Figure 1 As shown, the utility model provides a battery cell testing device, including a tray 60 arranged on a frame 10, a detection device 20, a normal battery cell bin 30, a normal battery cell bin 30, a faulty battery cell bin 40 and a transfer device 50.

[0033] The tray 60 is used to place the battery cells to be tested. The battery cells are placed on the tray 60 and then processed through the entire testing device.

[0034] The detection device 20 is used to detect whether the battery cells to be detected on the tray 60 are faulty batteries. This is a component used to detect the status of the battery cells. It detects the battery cells on the tray 60 to determine whether they are normal batteries or faulty batteries.

[0035] The detection device 20 includes a battery OCV tester and a code scanning device. The OCV tester is a common OCV tester in the prior art, which is used to measure the open circuit voltage (OCV) of the battery to evaluate the state and performance of the battery. For example, the OCV tester can be used to measure the internal resistance of the battery.

[0036] A QR code or barcode is pasted on each battery cell to be tested. The QR code or barcode includes the production time, equipment, personnel and other information of the battery cell. The QR code or barcode on it can be obtained by scanning the QR code or barcode with a scanning device to facilitate the traceability of the faulty battery cell. In this way, the production information of each battery cell can be traced back. This is very helpful for tracking the manufacturing time of the battery cell, the equipment used, the person in charge, etc., and helps to quickly locate and solve problems when they are found. Traceability information can be used for quality management, especially when faulty batteries are found. By scanning the QR code or barcode with a scanning device, detailed information about the production of the battery cell can be quickly obtained, which helps to analyze and locate production problems, and take corrective measures.

[0037] The normal battery cell compartment 30 is used to store normal battery cells. The normal battery cell compartment 30 is initially full, and stores normal battery cells 30 that have passed the test.

[0038] The faulty battery cell compartment 40 is used to store the faulty battery cells. The faulty battery cells are initially in an empty compartment state and are used to place the faulty battery cells detected on the tray 60.

[0039] The transfer device 50 is used to transfer cells between the pallet and the normal cell bin 30 and the faulty cell bin 40. This is a device used to transfer cells between the pallet 60, the normal cell bin 30 and the faulty cell bin 40. It can include a robotic arm, a conveyor belt, a rotating turntable, a robot system or other automated systems to efficiently transfer cells from one location to another.

[0040] The working process of the above device is that the tray 60 with the battery cells to be inspected is placed at the inspection position manually or by conveying equipment, and the inspection device 20 inspects the battery cells to be inspected. When it is detected as a faulty battery cell, the transfer device 50 picks it up and then transports it to the faulty battery cell bin 40, and then transports a normal battery cell from the normal battery cell bin 30 to the position of the detected faulty battery cell on the tray 60. In this way, it can be ensured that the number of battery cells on the tray 60 is the same after the inspection is completed, avoiding confusion in subsequent processes caused by different numbers.

[0041] like Figure 1 As shown, the transfer device 50 includes a moving device, which includes a first moving seat 51 arranged on the frame 10 and moving along a first direction, a second moving seat 52 moving along a second direction is arranged on the first moving seat 51, and a third moving seat 53 moving along a third direction is arranged on the second moving seat 52, and the first direction, the second direction and the third direction are perpendicular to each other. The first direction is the horizontal direction (i.e. Figure 1 The second direction is the horizontal direction (i.e. Figure 1 The third direction is the vertical direction (i.e. Figure 1The driving mechanism for driving the first moving seat 51, the second moving seat 52 and the third moving seat 53 to move is a linear driving mechanism such as a hydraulic cylinder, a pneumatic cylinder, a screw nut mechanism, etc.

[0042] Such a multi-layered mobile seat structure enables the transfer device 50 to be flexible in three mutually perpendicular directions. This design helps to accurately locate and move the battery cells to be tested in a complex production environment, while improving the applicability and flexibility of the system. By controlling the movement of each mobile seat, complex actions can be achieved, such as clamping a faulty battery cell and adding a normal battery cell to the tray 60.

[0043] like Figure 1 As shown, the transfer device 50 includes a clamp 54, which is arranged on the third movable seat 53, and the clamp 54 includes clamps that move closer to or farther away from each other along the second direction. The normal battery cell bin 30, the faulty battery cell bin 40 and the tray 60 are all located below the moving track of the clamp 54. When the clamp 54 is used, the clamps can be moved to both sides of the battery cell, and then the two clamps can be moved closer to each other to clamp the battery cell. This enables the clamp 54 to accurately clamp the faulty battery cell, place it in the faulty battery cell bin 40, and clamp the normal battery cell from the normal battery cell bin 30 to supplement it on the tray 60.

[0044] like Figure 1 As shown, the detection device 20 is arranged on the third movable seat 53. That is, the detection device 20 and the chuck 54 are arranged on the same component and move synchronously, so that the clamping can be directly performed while the detection is performed, and the detection device 20 and the chuck 54 can be moved simultaneously by using the same transfer device 50. Since the detection device 20 and the chuck 54 are on the same component, they can move synchronously, so that the clamping operation can be directly performed while the battery cell is being detected. This improves the efficiency of the system because two key operations can be performed at the same time, reducing the waiting time for the operation. Since the detection device 20 and the chuck 54 move synchronously, the system can perform the clamping and detection operations more effectively, reducing the movement amount of the overall transfer device 50. This helps to improve the efficiency of the production line and reduce energy consumption and mechanical wear. Since the detection device 20 and the chuck 54 move synchronously, the operation of the system becomes more consistent and controllable. This helps to ensure that the clamping and detection of each battery cell are performed in the same way, improving the consistency of product quality.

[0045] like Figure 1As shown, the frame 10 is provided with a conveying track section 70 connected with the conveying track, and the tray 60 is arranged on the conveying track section 70 and moves along the conveying track. In this way, the battery cell testing device in the present application can be directly connected with the conveying line of the battery cell. By directly connecting with the conveying track, the battery cell testing device can be directly integrated with the production line to achieve seamless material flow. Such seamless integration improves the coordination of the entire production process and reduces potential production line stagnation or pause time. It reduces the additional handling steps of the battery cells in the production process. This can reduce the risk of handling errors and reduce manual labor in production.

[0046] like Figure 1 As shown, the normal battery cell compartment 30 is provided with a plurality of normal battery cell storage positions 31, the faulty battery cell compartment 40 is provided with a plurality of faulty battery cell storage positions, and the tray 60 is provided with a plurality of storage positions for batteries to be tested. The plurality of storage positions for batteries to be tested on the tray 60 allow multiple batteries to be fed into the testing system at one time. This parallel processing design helps to improve the throughput of the overall production line, thereby increasing the efficiency of the system. By testing multiple batteries at the same time, the system can complete batch testing more quickly, reducing production time and cost.

[0047] like Figure 1 As shown, the number of normal battery cell storage positions 31 is the same as the number of faulty battery cell storage positions and the number of battery cell storage positions to be tested. This ensures that if all the batteries on the tray 60 are faulty batteries, there are enough faulty battery cell storage positions to store the faulty batteries. At the same time, since the number of normal battery cell storage positions 31 is the same, the system also has enough capacity to store normal battery cells for replacement. This design takes into account various possible situations and ensures that the system can effectively handle different test results. This balanced configuration helps to improve the reliability of the system and ensures that in batch processing, whether it is normal batteries or faulty batteries, the system can effectively store and process them, thereby ensuring the smooth operation of the production line.

[0048] like Figure 1 As shown, the tray 60 is provided with a lifting mechanism 61 that drives the tray 60 to move to the detection position along the third direction. The lifting mechanism 61 is used to realize the vertical movement of the tray 60, which can be a linear drive device such as a hydraulic cylinder, a cylinder, a screw nut mechanism, etc. Through this mechanism, the tray 60 can be lifted, lowered or adjusted in height. The purpose of this configuration is to ensure that the battery cell to be tested can be accurately moved to the detection position for corresponding testing or analysis. By using the lifting mechanism 61, the system can adjust the position of the tray 60 in the vertical direction to adapt to the processing requirements at different stages.

[0049] like Figure 1As shown, the rack 10 is provided with a plurality of first sensors 80 for detecting whether the battery cells exist, and the plurality of first sensors 80 are respectively directed toward the plurality of storage positions for the battery cells to be detected on the tray 60 located at the detection position. The first sensor 80 may be an ultrasonic sensor, a photoelectric sensor, a proximity sensor, etc. The purpose of this design is to pre-detect the existence of the battery cells by the first sensor 80 before the battery cells reach the detection position. This can be used to verify whether the battery cells are correctly placed on the tray 60 to ensure that only valid battery cells are taken into consideration before the system performs further detection. The number of sensors matches the number of storage positions for the battery cells to be detected, which helps to ensure that each storage position for the battery cells can be covered and detected. In this way, the system can more comprehensively and accurately determine whether there are battery cells to be detected on the tray 60, providing basic information for subsequent processing steps.

[0050] like Figure 2 As shown, the normal battery cell storage position 31 and the faulty battery cell storage position are provided with a second sensor 32 for detecting whether there are battery cells thereon. The second sensor 32 may be an ultrasonic sensor, a photoelectric sensor, a proximity sensor, etc. The data of the first sensor 80 and the second sensor 32 are converted to ensure that the tray 60 flowing out of the device is full or zero battery cells, so as to ensure the production of subsequent processes and avoid confusion in subsequent processes caused by excessive differences in the number of battery cells flowing out. By comparing the data of the sensors, the system can accurately calculate the number of battery cells on each battery cell storage position. This helps to ensure that the tray 60 flowing out is full or zero battery cells, and prevent errors or omissions.

[0051] like Figure 2 As shown, the normal battery cell storage position 31 includes four battery cell positioning blocks 33 arranged on a horizontal plane, and the four battery cell positioning blocks 33 are arranged at the four corners of a rectangle. The upper part of the battery cell positioning block 33 is concave to form a storage surface for placing normal batteries, and the storage surface is connected with the upper end surface of the battery cell positioning block 33 through a guide slope. The structure of the faulty battery cell storage position is the same as that of the normal battery cell storage position 31. The function of the positioning block is to ensure that the battery cell can be accurately positioned when placed to prevent it from moving or offsetting on the tray 60. The upper part of each battery cell positioning block 33 is concave to form a storage surface for placing normal batteries. This design helps to maintain the stability of the battery cell and keep it in the correct position on the storage position. The storage surface is connected with the upper end surface of the battery cell positioning block 33 through a guide slope. This design ensures that the battery cell falls into the storage surface even if there is a certain position error when placing the battery cell on the storage position, and at the same time plays a certain limiting role to prevent the battery cell from falling due to equipment vibration.

[0052] like Figure 1As shown, the normal battery cell bin 30 is located between the faulty battery cell bin 40 and the tray 60 in the first direction. Since the faulty battery cell bin 40, the normal battery cell bin 30 and the tray 60 are all in a straight line, the transfer device 50 can move in a straight line during displacement transfer. This helps to simplify the design and motion planning of the system, reduce the complexity of the transfer device 50, and improve the efficiency of the system. By arranging related elements in a straight line, the system can reduce the displacement of the transfer device 50. This is beneficial for speeding up the transfer speed, improving accuracy, and reducing potential motion errors.

[0053] In summary, the utility model proposes a battery cell testing device. In the above scheme, a transfer device 50 and two battery cell bins are provided. When the device detects a faulty battery cell, the faulty battery cell on the tray 60 can be clamped out and placed in the faulty battery cell bin 40, and then the normal battery cell in the normal battery cell bin 30 can be clamped out and placed in the missing space of the tray 60 to achieve the replacement of the faulty battery cell. Through the automatic clamping and replacement functions, the equipment can reduce manual intervention and downtime, and improve detection efficiency. The automated faulty battery cell processing system can reduce the need for manual operation and management, reduce labor costs, and reduce the possibility of misoperation due to human factors.

[0054] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

[0055] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0056] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0057] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0058] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0059] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0060] The above description of the illustrated embodiments of the present invention (including that described in the Abstract of the Specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0061] Systems and methods have been generally described herein as details that are helpful for understanding the present invention. In addition, various specific details have been given to provide an overall understanding of the embodiments of the present invention. However, those skilled in the relevant art will recognize that the embodiments of the present invention can be practiced without one or more specific details, or practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of the embodiments of the present invention.

[0062] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present invention will be adopted without corresponding use of other features without departing from the scope and spirit of the proposed utility model. Therefore, many modifications can be made to adapt specific environments or materials to the essential scope and spirit of the present utility model. The present utility model is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode for carrying out the present utility model, but the present utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present utility model will be determined solely by the appended claims.

Claims

1. A battery cell testing device, characterized in that: Included on the rack: Tray, used to place the battery cells to be tested; A detection device, used to detect whether the battery cell to be detected on the tray is a faulty battery cell; Normal battery cell compartment, used to store normal battery cells; Faulty battery cell compartment, used to store faulty battery cells; The transfer device is used to transfer the battery cells between the pallet and the normal battery cell bin and the faulty battery cell bin.

2. The battery cell testing device according to claim 1, characterized in that: The transfer device includes a moving device, which includes a first moving seat arranged on a frame and moving along a first direction, a second moving seat moving along a second direction is arranged on the first moving seat, and a third moving seat moving along a third direction is arranged on the second moving seat, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery cell testing device according to claim 2, characterized in that: The transfer device comprises a clamping head, which is arranged on a third movable seat, and the clamping head comprises clamping plates which approach or move away from each other along a second direction.

4. The battery cell testing device according to claim 2, characterized in that: The detection device is arranged on the third movable seat.

5. The battery cell testing device according to claim 1, characterized in that: The detection device includes a battery OCV tester and a code scanning device.

6. The battery cell testing device according to claim 1, characterized in that: The frame is provided with a conveying track section connected with the conveying track, and the tray is arranged on the conveying track section and moves along the conveying track.

7. The battery cell testing device according to claim 1, characterized in that: The normal battery cell bin is provided with a plurality of normal battery cell storage positions, the faulty battery cell bin is provided with a plurality of faulty battery cell storage positions, and the tray is provided with a plurality of to-be-tested battery cell storage positions.

8. The battery cell testing device according to claim 7, characterized in that: The number of the normal battery cell storage positions is the same as the number of the faulty battery cell storage positions and the number of the to-be-detected battery cell storage positions.

9. The battery cell testing device according to claim 7, characterized in that: The tray is provided with a lifting mechanism for driving the tray to move to a detection position along a third direction.

10. The battery cell testing device according to claim 9, characterized in that: The rack is provided with a plurality of first sensors for detecting whether the battery cells exist, and the plurality of first sensors are respectively directed toward a plurality of storage positions of the battery cells to be detected on the tray located at the detection position.

11. The battery cell testing device according to claim 10, characterized in that: The normal battery cell storage position and the faulty battery cell storage position are provided with a second sensor for detecting whether there are batteries thereon.

12. The battery cell testing device according to claim 7, characterized in that: The normal battery cell storage position includes four battery cell positioning blocks arranged on a horizontal plane, and the four battery cell positioning blocks are arranged at the four corners of a rectangle. The upper part of the battery cell positioning block is concave to form a storage surface for placing normal battery cells. The storage surface is connected to the upper end surface of the battery cell positioning block through a guiding inclined surface. The faulty battery cell storage position has the same structure as the normal battery cell storage position.

13. The battery cell testing device according to claim 2, characterized in that: The normal battery cell bin is located between the faulty battery cell bin and the tray in the first direction.

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