Battery cell assembly and battery

Abstract

The utility model relates to the technical field of batteries, in particular to a battery cell assembly and a battery. The battery cell assembly comprises a battery cell body and a gasket, a mounting surface is arranged in the thickness direction of the battery cell body, and the gasket is arranged on the mounting surface and covers the mounting surface. According to the battery cell assembly, the battery cell body and the gaskets are arranged, so that an operator can select the gaskets with different thicknesses according to the thickness specification of the battery cell body, mount the gaskets on the mounting surface in the thickness direction of the battery cell body and cover the mounting surface to compensate the thickness of the battery cell body, and the consistency of the thickness of the assembled battery cell assembly is ensured; the method provides an excellent rate guarantee for subsequent injection molding and assembling of batteries, reduces the reject ratio, and improves the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery cell assembly and a battery. Background Art

[0002] During the production process of battery cells, battery cells with different thickness dimensions will appear, such as T9.15mm, T9.23mm, T9.36mm, and so on.

[0003] When battery cells with different thickness dimensions are formed into batteries during subsequent injection molding and assembly production, due to the injection molding process, thin battery cells occupy a small space size, while thick battery cells occupy a large space size. With the same injection volume, the size of the space gap between battery cells with different thickness dimensions in the same injection mold is different, resulting in insufficient injection volume, causing incomplete filling, or excessive injection volume, causing glue overflow, thus leading to a high defective rate of battery assembly and low production efficiency. Summary of the Utility Model

[0004] The technical problem to be solved in the embodiments of the utility model is to provide a battery cell assembly and a battery to solve the problems of high defective rate of battery assembly and low production efficiency in the prior art.

[0005] The utility model discloses a battery cell assembly, including a battery cell body and a gasket. A mounting surface is provided in the thickness direction of the battery cell body, and the gasket is mounted on the mounting surface and covers the mounting surface.

[0006] Optionally, a first identification portion for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface.

[0007] Optionally, a first identification character for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface to form the first identification portion.

[0008] Optionally, a second identification portion for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface.

[0009] Optionally, a color layer for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface to form the second identification portion.

[0010] Optionally, a third identification portion for identifying the thickness of the battery cell body is provided on the battery cell body, and the third identification portion corresponds to the first identification portion.

[0011] Optionally, a second identification character for identifying the thickness of the battery cell body is provided on the battery cell body to form the third identification portion, and the second identification character is the same as the first identification character.

[0012] Optionally, the third identification part is arranged on the mounting surface.

[0013] Optionally, the gasket is made of one of PET, PP, PC, and PVC materials.

[0014] The present utility model also discloses a battery, which includes a housing and the above-mentioned battery cell assembly, and the housing wraps around the outer periphery of the battery cell assembly.

[0015] Compared with the prior art, the beneficial effects of the battery cell assembly and the battery provided by the embodiments of the present utility model are as follows: By providing the battery cell body and the gasket, the operator can select gaskets with different thicknesses according to the thickness specifications of the battery cell body, install them on the mounting surface in the thickness direction of the battery cell body, and cover the mounting surface to compensate for the thickness of the battery cell body, ensure the consistency of the thickness of the battery cell assembly after assembly, provide a guarantee for the subsequent injection molding and assembly to form a battery, reduce the defective rate, and improve the production efficiency. Description of the Drawings

[0016] The technical solutions of the present utility model will be further described in detail below in conjunction with the drawings and embodiments. In the drawings:

[0017] Figure 1 is a plan view of the battery cell assembly provided by the embodiment of the present utility model;

[0018] Figure 2 is a plan view of the battery cell body provided by the embodiment of the present utility model;

[0019] Figure 3 is a plan view of the gasket provided by the embodiment of the present utility model.

[0020] The reference numerals in the drawings are as follows:

[0021] 10. Battery cell body; 10a. Mounting surface; 11. Third identification part; 111. Second identification character; 20. Gasket; 21. First identification part; 211. First identification character; 22. Second identification part; 221. Color layer. Detailed Embodiments

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Now, in conjunction with the drawings, the preferred embodiments of the present utility model will be described in detail.

[0023] The embodiment of the present utility model provides a battery cell assembly, as Figures 1 to 3 shown, the battery cell assembly includes a battery cell body 10 and a gasket 20. A mounting surface 10a is provided in the thickness direction of the battery cell body 10, and the gasket 20 is installed on the mounting surface 10a and covers the mounting surface 10a.

[0024] In the battery cell assembly of the embodiment of the present utility model, by providing the battery cell body 10 and the gasket 20, an operator can select gaskets 20 with different thicknesses according to the thickness specification of the battery cell body 10, and mount them on the mounting surface 10a in the thickness direction of the battery cell body 10 and cover the mounting surface 10a to compensate for the thickness of the battery cell body 10, ensure the consistency of the thickness of the battery cell assembly after assembly, provide a guarantee for the subsequent injection molding and assembly to form a battery, reduce the defective rate, and improve the production efficiency.

[0025] Among them, gaskets 20 with different thicknesses can compensate for the thickness of battery cell bodies 10 with different thickness specifications, form a battery cell assembly with a unified thickness, produce battery cell assemblies with the same batch thickness specification, meet the same thickness output requirements, so as to meet the subsequent injection molding to form a battery with the same thickness.

[0026] During specific implementation, an adhesive layer can be provided on one side of the gasket 20 facing the mounting surface 10a of the battery cell body 10, and the gasket 20 is mounted on the mounting surface 10a of the battery cell body 10 through the adhesive layer, which is convenient for assembly. The adhesive layer can be provided to cover the entire side surface of the gasket 20 to ensure the firmness of the mounting.

[0027] The material of the gasket 20 can be one of PET material, PP material, PC material, and PVC material.

[0028] Reference Figure 1 and 3 , in this embodiment, a first identification portion 21 for identifying the thickness of the gasket 20 is provided on one side of the gasket 20 facing away from the mounting surface 10a.

[0029] By providing the first identification portion 21, during the assembly process of the battery cell assembly, manual or machine can identify and distinguish the thickness of the gasket 20 through the first identification portion 21, and assemble the gasket 20 with the corresponding thickness on the battery cell body 10 that requires corresponding thickness compensation, reducing the misassembly of the battery cell body 10 and the gasket 20, which can ensure the normal flow of materials during the battery production process and ensure that the finally produced batteries have the same batch thickness specification.

[0030] Specifically, a first identification character 211 for identifying the thickness of the gasket 20 is provided on one side of the gasket 20 facing away from the mounting surface 10a to form the first identification portion 21.

[0031] The first identification character 211 has a specific shape and meaning expression, which is easy to identify and distinguish, helps to standardize the gaskets 20 with different thicknesses, and improves the assembly accuracy. The first identification character 211 can specifically be letters, numbers, geometric figures, etc. In this embodiment, the first identification character 211 preferably uses letters. The letters are common characters, which are universal, easy to identify and understand, have strong readability, and have diversity, which can provide more choices and combinations to represent different thickness grades.

[0032] During specific implementation, the first identification character 211 can be formed on the gasket 20 by means of printing, sticking labels, spraying, etc.

[0033] Furthermore, on one side of the gasket 20 facing away from the mounting surface 10a, a second identification portion 22 for identifying the thickness of the gasket 20 is provided.

[0034] By providing the second identification portion 22, it can further help manual or machine to identify and distinguish the thickness of the gasket 20, assemble the gasket 20 with the corresponding thickness on the battery cell body 10 that requires corresponding thickness compensation, and further reduce the misassembly of the battery cell body 10 and the gasket 20.

[0035] Specifically, on one side of the gasket 20 facing away from the mounting surface 10a, a color layer 221 for identifying the thickness of the gasket 20 is provided to form the second identification portion 22. Through the color layer 221 on the gasket 20, the gasket 20 gives a relatively strong visual effect to the outside, helps manual or machine to effectively identify and distinguish gaskets 20 with different thicknesses, further reduces the misassembly of the battery cell body 10 and the gasket 20, and further improves the production efficiency.

[0036] Wherein, the color layer 221 can cover the entire side of the gasket 20 facing away from the mounting surface 10a, or can be a partial area of one side of the gasket 20 facing away from the mounting surface 10a. Preferably, in this embodiment, the color layer 221 covers the entire side of the gasket 20 facing away from the mounting surface 10a, which is easy to identify.

[0037] During specific implementation, a color coating or ink corresponding to the thickness of the gasket 20 can be used to coat a layer of color on the surface of the gasket 20 to form the color layer 221, or the color corresponding to the thickness of the gasket 20 can be transferred on the surface of the gasket 20 to form the color layer 221 or other ways to form the color layer 221 on the gasket 20.

[0038] In this embodiment, referring to Figures 1 to 3 , on the battery cell body 10, a third identification portion 11 for identifying the thickness of the battery cell body 10 is provided, and the third identification portion 11 corresponds to the first identification portion 21.

[0039] By providing a third identification portion 11 on the battery cell body 10 corresponding to the first identification portion 21 on the gasket 20, it is convenient for manual or machine to identify and distinguish the battery cell body 10 from the gasket 20 compensating for the thickness of the battery cell body 10, further avoiding the misassembly of the battery cell body 10 and the gasket 20.

[0040] The third identification portion 11 corresponds to the first identification portion 21. The third identification portion 11 and the first identification portion 21 can be the same or correspond to a matching relationship. For example, if the first identification portion 21 is a letter and the third identification portion 11 is a number, the battery cell body 10 and the gasket 20 are identified and assembled according to the preset matching relationship between the letter and the number. Specifically, the letter A can be provided on the battery cell body 10 with a certain thickness, and the number 1 is provided on the gasket 20 compensating for the thickness of this battery cell body 10. The letter B is provided on the battery cell body 10 with another thickness, and the number 2 is provided on the gasket 20 compensating for this thickness specification, etc.

[0041] In this embodiment, a second identification character 111 for identifying the thickness of the battery cell body 10 is provided on the battery cell body 10 to form the third identification portion 11, and the second identification character 111 is the same as the first identification character 211.

[0042] By setting the second identification character 111 for identifying the thickness of the battery cell body 10 on the battery cell body 10 to be the same as the first identification character 211 on the gasket 20, it is easier to identify, distinguish and match the battery cell body 10 and the gasket 20 compensating for its matching thickness, facilitating the assembly of the battery cell body 10 and the corresponding gasket 20 together and improving production efficiency.

[0043] Specifically, the first identification character 211 and the second identification character 111 can be the same letter, number, geometric figure, etc. Preferably, the first identification character 211 and the second identification character 111 are the same letter.

[0044] Reference Figure 1 and Figure 2 , the third identification portion 11 on the battery cell body 10 is provided on the mounting surface 10a of the battery cell body 10, which can facilitate manual or machine to quickly identify the position where the gasket 20 is installed on the battery cell body 10 and improve production efficiency.

[0045] Taking the cell body 10 with four thickness specifications as an example, the assembly process of the cell component of the present application will be described as follows: The four cell bodies with different thickness specifications are A, B, C, and D respectively. The thickness difference range of the cell body 10 with the A thickness specification is Δ0 to 0.1 mm; the thickness difference range of the cell body 10 with the B thickness specification is Δ0.1 to 0.2 mm; the thickness difference range of the cell body 10 with the C thickness specification is Δ0.2 to 0.3 mm, and the thickness difference range of the cell body 10 with the D thickness specification is Δ0.3 to 0.4 mm, and the corresponding identifiers are set as A, B, C, and D respectively. The thicknesses of the gaskets 20 corresponding to compensating for the thickness of the cell body 10 are a, b, c, and d respectively, where a is 0.4 mm, b is 0.3 mm, c is 0.2 mm, and d is 0.1 mm, and the corresponding gaskets 20 are respectively set with identifiers A, B, C, and D. When assembling the cell body 10 and the gasket 20, the gasket 20 marked with A is installed on the cell body 10 marked with A, the gasket 20 marked with B is installed on the cell body 10 marked with B, the gasket 20 marked with C is installed on the cell body 10 marked with C, and the gasket 20 marked with D is installed on the cell body 10 marked with D. In this way, the thickness difference range of the cell component will be unified into a thickness specification of Δ0.4 to 0.5 mm. Under this specification, injection molding is carried out. Since the thickness specifications of the cell components are unified, under the same injection volume, batteries with the same thickness specification can be produced, the production yield of the battery products is improved, the production efficiency is greatly increased, and the production cost is reduced. Among them, the thickness difference range is the difference range of the thickness of the cell body 10 higher than a preset value.

[0046] The embodiment of the present invention further provides a battery, which includes a housing and the cell component as described above, and the housing wraps around the periphery of the cell component.

[0047] In the battery of the embodiment of the present invention, by providing the cell body 10 and the gasket 20, the operator can select gaskets 20 with different thicknesses according to the thickness specification of the cell body 10 and install them on the mounting surface 10a in the thickness direction of the cell body 10 to cover the mounting surface 10a, so as to compensate for the thickness of the cell body 10, ensure the consistency of the thickness of the assembled cell component, provide a guarantee for the subsequent injection molding and assembly to form a battery, reduce the defective rate, and improve the production efficiency.

[0048] Among them, the housing is injection molded and coated around the periphery of the cell component through an injection molding process.

[0049] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A battery cell assembly, characterized in that, It includes a battery cell body and a gasket. A mounting surface is provided in the thickness direction of the battery cell body. The gasket is mounted on the mounting surface and covers the mounting surface. A first identification portion for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface.

2. The cell assembly according to claim 1, wherein, A first identification character for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface to form the first identification portion.

3. The battery cell assembly according to claim 2, wherein A second identification portion for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface.

4. The cell assembly according to claim 3, wherein, A color layer for identifying the thickness of the gasket is provided on one side of the gasket facing away from the mounting surface to form the second identification portion.

5. The cell assembly according to any one of claims 2 to 4, characterized in that, A third identification portion for identifying the thickness of the battery cell body is provided on the battery cell body, and the third identification portion corresponds to the first identification portion.

6. The cell assembly according to claim 5, characterized in that, A second identification character for identifying the thickness of the battery cell body is provided on the battery cell body to form the third identification portion, and the second identification character is the same as the first identification character.

7. The cell assembly according to claim 5, characterized in that, The third identification portion is provided on the mounting surface.

8. The cell assembly according to claim 1, wherein The material of the gasket is one of PET material, PP material, PC material and PVC material.

9. A battery, characterized in that, It includes a housing and the battery cell assembly according to any one of claims 1-8, and the housing wraps around the periphery of the battery cell assembly.

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