Visual detection device of battery module

Abstract

The utility model discloses a visual detection device of a battery module, which comprises a positive electrode detection jig and a negative electrode detection jig, the battery module comprises a plurality of battery cells, and the positive electrodes of part of the battery cells face upwards so as to form a plurality of positive electrodes at the upper end of the battery module. The cathodes of the remaining battery cells in the plurality of battery cells face upwards so as to form a plurality of cathodes at the upper end of the battery module; the positive electrode detection jig comprises a first plate-shaped main body, the first plate-shaped main body is provided with a plurality of first holes corresponding to the plurality of positive electrodes, the negative electrode detection jig comprises a second plate-shaped main body, the second plate-shaped main body is provided with a plurality of second holes corresponding to the plurality of negative electrodes, and the plurality of positive electrodes are exposed through the plurality of first holes in the positive electrode detection jig; and the plurality of cathodes are exposed through a plurality of second holes in the cathode detection jig. By designing the positive electrode detection jig and the negative electrode detection jig, the positive electrode and the negative electrode of the battery cell are separately detected, eye fatigue is avoided, the detection efficiency is improved, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of power batteries, and in particular to a visual inspection device for battery modules. Background Technology

[0002] Battery modules typically use brackets to assemble several battery cells together. The cells placed in the brackets must have their positive and negative terminals aligned according to specifications. However, during production, employees occasionally make placement errors, resulting in the positive and negative terminals of the cells being reversed, or cells being missed or over-discharged. Whether the cells are reversed, over-discharged, or missed, it will lead to rework of defective products or safety accidents. Therefore, after placing the cells in the brackets, employees need to check for incorrect placement.

[0003] Currently, battery module inspection typically includes two methods: 1. Direct visual inspection, which is inefficient and prone to errors and eye fatigue; 2. Inspection using visual inspection equipment, but such equipment is expensive and not easily moved, making it unsuitable for multi-variety, small-batch production. Summary of the Invention

[0004] The purpose of this invention is to provide a visual inspection device for battery modules, so as to solve the problems of errors and eye fatigue caused by visual inspection in the prior art, as well as the high cost of using visual inspection equipment.

[0005] To achieve the above objectives, this utility model provides a visual inspection device for a battery module, including a positive electrode detection fixture and a negative electrode detection fixture. The battery module includes a support and a plurality of battery cells disposed on the support. A portion of the battery cells have their positive electrodes facing upwards to form multiple positive electrodes at the upper end of the battery module, while the remaining battery cells have their negative electrodes facing upwards to form multiple negative electrodes at the upper end of the battery module. The positive electrode cells facing upwards and the negative electrode cells facing upwards are arranged alternately. The positive electrode detection fixture includes a first plate-shaped body with a plurality of first holes corresponding to the multiple positive electrodes. The negative electrode detection fixture includes a second plate-shaped body with a plurality of second holes corresponding to the multiple negative electrodes. The multiple positive electrodes are exposed through the plurality of first holes in the positive electrode detection fixture, and the multiple negative electrodes are exposed through the plurality of second holes in the negative electrode detection fixture.

[0006] Preferably, the plurality of first holes form a plurality of first units arranged at intervals in the lateral direction, and two adjacent first holes in the first unit are connected.

[0007] Preferably, the plurality of second holes comprises a plurality of second units arranged at intervals in the lateral direction, wherein two adjacent second holes in the second unit are connected.

[0008] Preferably, the battery cell has a positive terminal, the positive electrode is located in the middle of the positive terminal, and an insulating pad is provided on the area of ​​the positive terminal other than the positive electrode, the insulating pad being red in color.

[0009] Preferably, the insulating pad is annular, and the diameter of the first hole is larger than the inner diameter of the insulating pad.

[0010] Preferably, the battery cell also has a negative terminal opposite to the positive terminal, the negative terminal being the negative electrode, and the negative terminal being silver or grayish-white in color.

[0011] Preferably, both the first plate-shaped body and the second plate-shaped body are rectangular in structure, and the dimensions of the first plate-shaped body and the second plate-shaped body are set to correspond to the dimensions of the upper end face of the battery module.

[0012] Preferably, both the first plate-shaped body and the second plate-shaped body are opaque non-metallic plates.

[0013] Preferably, the first plate-shaped body and the second plate-shaped body are each individually selected from paperboard, PC sheet and fiberboard.

[0014] Compared with the prior art, the present invention, by designing positive and negative electrode testing fixtures, separates the positive and negative electrodes of the battery cell for inspection. Only the positive or negative electrode of the battery cell is tested at a time, avoiding eye fatigue, improving testing efficiency, and being convenient to use. In addition, the present invention does not require moving the battery module; only the small positive and negative electrode testing fixtures need to be moved for testing, reducing labor intensity, improving production efficiency, and keeping costs low. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the battery module in an embodiment of this utility model.

[0016] Figure 2 This is a structural diagram of a positive electrode detection fixture in an embodiment of this utility model.

[0017] Figure 3 This is a structural diagram of a negative electrode detection fixture in an embodiment of this utility model.

[0018] Figure 4 This is another structural diagram of the positive electrode detection fixture in the embodiments of this utility model.

[0019] Figure 5This is another structural diagram of the negative electrode detection fixture in this utility model embodiment. Detailed Implementation

[0020] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0021] like Figures 1 to 5 As shown, this utility model provides a visual inspection device for a battery module, including a positive electrode inspection fixture 1 and a negative electrode inspection fixture 2. The battery module includes a support 10 and a plurality of battery cells 20 disposed on the support 10. The positive electrodes 201 of some of the battery cells 20 face upward to form a plurality of positive electrodes 201 at the upper end of the battery module. The negative electrodes 202 of the remaining battery cells 20 face upward to form a plurality of negative electrodes 202 at the upper end of the battery module. The battery cells 20 with the positive electrodes 201 facing upward and the negative electrodes... The cells 20 are arranged at intervals facing upwards; the positive electrode detection fixture 1 includes a first plate-shaped body 11, and the first plate-shaped body 11 has a plurality of first holes 111 corresponding to the plurality of positive electrodes 201; the negative electrode detection fixture 2 includes a second plate-shaped body 21, and the second plate-shaped body 21 has a plurality of second holes 211 corresponding to the plurality of negative electrodes 202; the plurality of positive electrodes 201 are exposed through the plurality of first holes 111 on the positive electrode detection fixture 1, and the plurality of negative electrodes 202 are exposed through the plurality of second holes 211 on the negative electrode detection fixture 2.

[0022] Specifically, the battery cell 20 has a cylindrical structure. The arrangement of the battery cells 20 is based on design requirements. The specific positions within the designated bracket 10 must be arranged according to a standardized method, with the positive electrode 201 and negative electrode 202 of the battery cells 20 placed precisely without error. The size and position of the first hole 111 correspond to the positive electrode 201 of the battery cell 20, designed to expose only the positive electrode 201 of all the battery cells 20. The size and position of the second hole 211 correspond to the negative electrode 202 of the battery cell 20, designed to expose only the negative electrode 202 of all the battery cells 20. For example... Figure 1 As shown, when the positive terminal 201 of the battery cell 20 faces upward, it is represented by "+", and when the negative terminal 202 of the battery cell 20 faces upward, it is represented by "-". Figures 2 to 3As shown, the positive electrode detection fixture 1 is set for all positive electrodes 201, and the negative electrode detection fixture 2 is set for all negative electrodes 202. When visually inspecting whether the battery cell 20 is correctly placed in the battery cell 20 bracket 10, first cover the battery module with the positive electrode detection fixture 1, and visually inspect whether the positive electrode 201 of the battery cell 20 is exposed in the first hole 111. If so, it means that the battery cell 20 at the position of the first hole 111 is placed correctly. Then, in the same way, cover the battery module with the negative electrode detection fixture 2. Visually inspect the second hole 211 to see if the negative electrode 202 of the battery cell 20 is exposed. If so, it means that the battery cell 20 is correctly placed at the position of the second hole 211. After two checks, ensure that the battery cell 20 is placed completely correctly, without any more or less. Conversely, if it is found that there is no battery cell 20 in the first hole 111 or the second hole 211, or if the positive electrode 201 and the negative electrode 202 of the battery cell 20 in the first hole 111 or the second hole 211 are reversed, obvious differences can be found by visual inspection.

[0023] This utility model embodiment designs a positive electrode testing fixture 1 and a negative electrode testing fixture 2 to inspect the positive electrode 201 and negative electrode 202 of the battery cell 20 separately. Only the positive electrode 201 or the negative electrode 202 of the battery cell 20 is tested at a time, avoiding eye fatigue, improving testing efficiency and making it convenient to use. In addition, this utility model embodiment does not require moving the battery module. Only the light positive electrode testing fixture 1 and the negative electrode testing fixture 2 need to be moved to perform the test, reducing labor intensity, improving production efficiency and keeping costs low.

[0024] In this embodiment of the utility model, such as Figure 4 As shown, multiple first holes 111 form multiple first units a arranged at intervals in the horizontal direction, and two adjacent first holes 111 in a first unit a are connected. Specifically, two adjacent first holes 111 can be connected to each other at their nearest neighbor position, which can reduce the drilling accuracy.

[0025] Furthermore, such as Figure 5 As shown, the plurality of second holes 211 include a plurality of second units b arranged at intervals in the lateral direction, and two adjacent second holes 211 in the second unit b are connected. Specifically, two adjacent second holes 211 can be connected to each other at their nearest neighbor position, which can reduce the drilling accuracy. Moreover, the plurality of second holes 211 also includes a third unit c arranged continuously at the bottom, and the second holes 211 in the third unit c are connected to each other.

[0026] In this embodiment of the invention, the battery cell 20 has a positive terminal, with a positive electrode 201 located in the center of the positive terminal. An insulating pad, red in color, is provided on the area of ​​the positive terminal excluding the positive electrode 201. Specifically, the insulating pad is annular, and the diameter of the first hole 111 is larger than the inner diameter of the insulating pad to expose it. By providing a red insulating pad on the positive terminal, the positive terminal of the battery cell 20 is easier to identify, further reducing eye fatigue and improving usage efficiency.

[0027] In this embodiment of the invention, the battery cell 20 also has a negative terminal opposite to the positive terminal, which is referred to as the negative electrode 202. The negative terminal is silver or grayish-white in color. Specifically, the positive and negative terminals of the battery cell 20 are clearly separated by color to improve the efficiency of visual inspection.

[0028] In this embodiment of the invention, both the first plate-shaped main body 11 and the second plate-shaped main body 21 are rectangular in structure, and the dimensions of the first plate-shaped main body 11 and the second plate-shaped main body 21 correspond to the dimensions of the upper end face of the battery module. Specifically, the dimensions of the upper end face of the battery module are the same as the dimensions of the upper end face of the bracket 10. According to the battery module design requirements, corresponding positive electrode detection fixture 1 and negative electrode detection fixture 2 are manufactured based on the structural dimensions of the bracket 10 used for the battery cell 20.

[0029] In this embodiment of the invention, both the first plate-shaped body 11 and the second plate-shaped body 21 are opaque non-metallic plates. Specifically, the first plate-shaped body 11 and the second plate-shaped body 21 are each individually selected from cardboard, PC sheet, and fiberboard. The positive electrode detection fixture 1 and the negative electrode detection fixture 2 use inexpensive cardboard, PC sheet, or fiberboard and other non-metallic sheet materials, resulting in lower costs.

[0030] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A visual inspection device for a battery module, characterized in that, The battery module includes a positive electrode detection fixture and a negative electrode detection fixture. The battery module includes a support and several battery cells disposed on the support. A portion of the battery cells have their positive electrodes facing upwards to form multiple positive electrodes at the upper end of the battery module. The remaining battery cells have their negative electrodes facing upwards to form multiple negative electrodes at the upper end of the battery module. The positive electrode cells and negative electrode cells are arranged alternately. The positive electrode detection fixture includes a first plate-shaped body with multiple first holes corresponding to the multiple positive electrodes. The negative electrode detection fixture includes a second plate-shaped body with multiple second holes corresponding to the multiple negative electrodes. The multiple positive electrodes are exposed through the multiple first holes in the positive electrode detection fixture, and the multiple negative electrodes are exposed through the multiple second holes in the negative electrode detection fixture.

2. The visual inspection device for battery modules as described in claim 1, characterized in that, The multiple first holes form multiple first units arranged at intervals in the lateral direction, and two adjacent first holes in the first unit are connected.

3. The visual inspection device for battery modules as described in claim 1, characterized in that, The plurality of second holes include a plurality of second units arranged at intervals in the lateral direction, wherein two adjacent second holes in the second unit are connected.

4. The visual inspection device for battery modules as described in claim 1, characterized in that, The battery cell has a positive terminal, and the positive electrode is located in the middle of the positive terminal. An insulating pad is provided on the area of ​​the positive terminal other than the positive electrode, and the insulating pad is red.

5. The visual inspection device for battery modules as described in claim 4, characterized in that, The insulating pad is annular, and the diameter of the first hole is larger than the inner diameter of the insulating pad.

6. The visual inspection device for battery modules as described in claim 4, characterized in that, The battery cell also has a negative terminal opposite to the positive terminal, the negative terminal being the negative electrode, and the negative terminal being silver or grayish-white in color.

7. The visual inspection device for battery modules as described in claim 1, characterized in that, Both the first plate-shaped main body and the second plate-shaped main body are rectangular in structure, and the dimensions of the first plate-shaped main body and the second plate-shaped main body are set to correspond to the dimensions of the upper end face of the battery module.

8. The visual inspection device for battery modules as described in claim 1, characterized in that, Both the first plate-shaped body and the second plate-shaped body are opaque non-metallic plates.

9. The visual inspection device for battery modules as described in claim 8, characterized in that, The first plate-shaped body and the second plate-shaped body are each individually selected from one of paperboard, PC sheet and fiberboard.

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