Top patch and battery

Abstract

The utility model relates to the technical field of batteries, in particular to a top patch, a first through hole is formed in the top patch, the top patch can be attached to a cover plate, the first through hole corresponds to a pole on the cover plate and / or the position of a battery two-dimensional code, the length and the width of the cover plate are a and c respectively, the length and the width of the top patch are A and C respectively, a-A is larger than or equal to 0.5 mm and smaller than or equal to 8 mm, and / or a-B is larger than or equal to 0.5 mm and smaller than or equal to 3 mm. 0.5 mm < = c-C < = 8 mm. The utility model further provides a battery which comprises a cover plate and the top patch, and the top patch is attached to the cover plate. According to the top patch and the battery provided with the top patch, the cover plate can be protected during laser welding, and the quality of the cover plate and the battery is ensured.

Description

Technical Field

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

[0002] The battery includes a shell and positive and negative electrode covers. During the battery manufacturing process, the shell and the positive and negative electrode covers need to be laser welded. The welding slag splashes on the cover during welding and damages the cover, causing battery quality problems.

[0003] Therefore, there is an urgent need for a top patch and a battery to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide a top patch that can protect the cover plate during laser welding and ensure the quality of the cover plate and the battery.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A top patch is provided, wherein a first through hole is formed on the top patch, and the top patch can be attached to a cover plate, wherein the first through hole is formed corresponding to a position of a pole and / or a battery QR code on the cover plate, wherein the length and width of the cover plate are a and c respectively, and the length and width of the top patch are A and C respectively, satisfying: 0.5mm≤aA≤8mm, and / or, 0.5mm≤cC≤8mm.

[0007] As a preferred solution of the top patch, a second through hole is opened on the top patch, and the second through hole is opened corresponding to the explosion-proof valve of the cover plate.

[0008] As a preferred solution of the top patch, the top patch is provided with a first positive and negative electrode mark, or the top patch is provided with a third through hole, and the third through hole is opened corresponding to the second positive and negative electrode mark of the cover plate.

[0009] As a preferred solution of the top patch, the edge width of the first through hole is greater than or equal to 1 mm;

[0010] And / or, the edge width of the second through hole is greater than or equal to 1 mm;

[0011] And / or, the edge width of the third through hole is greater than or equal to 1 mm.

[0012] As a preferred solution of the top patch, the top patch includes a body layer and an adhesive layer, and the adhesive layer can be attached and bonded to the cover plate.

[0013] As a preferred solution of the top patch, the thickness D1 of the body layer satisfies 0.1 mm≤D1≤2 mm, and / or the thickness D2 of the adhesive layer satisfies 0.025 mm≤D2≤0.3 mm.

[0014] As a preferred solution for the top patch, the adhesive strength of the adhesive layer is greater than or equal to 15 N / in.

[0015] As a preferred solution of the top patch, two first through holes are provided, and the two first through holes are opened corresponding to the positions of the pole and the battery QR code respectively.

[0016] Another object of the utility model is to provide a battery that can protect the cover plate during laser welding and ensure the quality of the cover plate and the battery.

[0017] To achieve this purpose, the utility model adopts the following technical solutions:

[0018] A battery is provided, comprising a cover plate and the above-mentioned top patch, wherein the top patch is attached to the cover plate.

[0019] As a preferred solution of the battery, it further comprises a shell and a blue film, wherein the blue film is wrapped on the shell, the cover plate is welded to the opening of the shell, and the cover plate and the shell together form a sealed inner cavity.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a top patch, which can be attached to the cover plate, so as to protect the cover plate during laser welding and prevent welding spatter from damaging the cover plate, thereby ensuring the quality of the cover plate and the battery. By opening a first through hole on the top patch, the first through hole is opened corresponding to the position of the pole and / or the battery QR code on the cover plate, so that the normal connection between the pole and the outside world can be guaranteed, and the battery QR code on the cover plate can be viewed normally. The length and width of the cover plate are a and c respectively, and the length and width of the top patch are A and C respectively, satisfying: 0.5mm≤aA≤8mm, and / or, 0.5mm≤cC≤8mm. That is, the size of the top patch is slightly smaller than the cover plate. If the sizes of the two are too close, it will affect welding. If the size difference is too large, the area of ​​the uncovered cover plate will be too large, and the protection effect will be poor. Therefore, the above size range can further ensure the protection effect without hindering welding.

[0022] The utility model provides a battery, comprising a cover plate and the above-mentioned top patch, wherein the top patch is attached to the cover plate. The battery can protect the cover plate during laser welding, thereby ensuring the quality of the cover plate and the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an exploded diagram of a battery provided by an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the positive electrode cover provided by the embodiment of the utility model;

[0025] Figure 3 It is a structural schematic diagram of a positive electrode top patch (with two first through holes) provided in an embodiment of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a positive electrode top patch (with a first through hole) provided in an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of the mechanism of the negative electrode cover provided by the embodiment of the utility model;

[0028] Figure 6 It is a schematic structural diagram of a negative electrode top patch (with two first through holes) provided in an embodiment of the utility model;

[0029] Figure 7 It is a schematic structural diagram of a negative electrode top patch (with a first through hole) provided in an embodiment of the utility model.

[0030] In the figure:

[0031] 1. positive electrode top patch; 101. first through hole; 102. second through hole; 11. first positive electrode mark;

[0032] 2. Negative electrode top patch; 21. First negative electrode identification;

[0033] 3. Positive electrode cover; 31. Positive electrode column; 32. Second positive electrode mark; 33. Explosion-proof valve;

[0034] 4. Negative electrode cover plate; 41. Negative electrode column; 42. Second negative electrode identification;

[0035] 5. Shell; 6. Blue film. DETAILED DESCRIPTION

[0036] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] like Figure 1-Figure 7 As shown, the top patch of this embodiment can be attached to the cover plate, which can protect the cover plate during laser welding and prevent welding spatter from damaging the cover plate, thereby ensuring the quality of the cover plate and the battery. By opening a first through hole 101 on the top patch, the first through hole 101 is opened at the position corresponding to the pole and / or the battery QR code on the cover plate, so that the pole can be normally connected with the outside world, and the battery QR code on the cover plate can be viewed normally. The length and width of the cover plate are a and c respectively, and the length and width of the top patch are A and C respectively, satisfying: 0.5mm≤aA≤8mm, and / or, 0.5mm≤cC≤8mm. That is, the size of the top patch is slightly smaller than the cover plate. If the sizes of the two are too close, it will affect welding. If the size difference is too large, the area of ​​the uncovered cover plate is too large, and the protection effect is not good. Therefore, the above size range can further ensure the protection effect without hindering welding.

[0040] like Figure 3 and Figure 4 As shown, preferably, a second through hole 102 is opened on the top patch, and the second through hole 102 is opened corresponding to the explosion-proof valve 33 of the cover plate to prevent the top patch from interfering with the opening of the explosion-proof valve 33.

[0041] Optionally, the top patch is provided with a first positive and negative electrode identification, that is, the positive and negative electrodes can be displayed on the top patch, which is convenient for assembly. In this embodiment, the positive electrode top patch 1 is provided with a first positive electrode identification 11, and the negative electrode top patch 2 is provided with a first negative electrode identification 21. The positive electrode top patch 1 is attached to the positive electrode cover plate 3, and the negative electrode top patch 2 is attached to the negative electrode cover plate 4. Of course, in other embodiments, the positive and negative electrodes can also be provided on the same cover plate, and three first through holes 101 are provided on the top patch to correspond to the positive electrode column, the negative electrode column and the battery QR code respectively, and the positive electrode identification and the negative electrode identification can be provided near the positive and negative electrode columns accordingly.

[0042] Optionally, a third through hole is provided on the top patch, and the third through hole is provided corresponding to the second positive and negative electrode identification of the cover plate, and the positive and negative electrodes can also be displayed on the top patch, which is convenient for assembly. Specifically, the third through hole on the positive top patch 1 corresponds to the second positive electrode identification 32 on the positive cover plate 3, and the third through hole on the negative top patch 2 corresponds to the second negative electrode identification 42 on the negative cover plate 4, so that the second positive electrode identification 32 and the second negative electrode identification 42 can be easily seen.

[0043] Preferably, the edge width of the first through hole 101 is greater than or equal to 1 mm, preferably, the edge width of the second through hole 102 is greater than or equal to 1 mm, and preferably, the edge width of the third through hole is greater than or equal to 1 mm. If the edge is too narrow, it is easy to break, difficult to process, and difficult to stick to the cover.

[0044] Preferably, the top patch includes a body layer and an adhesive layer, and the adhesive layer can be attached and bonded to the cover plate. Preferably, the body layer is made of an insulating material, such as PC, PP, PE, etc., and the base material of the adhesive layer can be PET, cotton or other materials.

[0045] Preferably, the thickness D1 of the body layer satisfies 0.1 mm ≤ D1 ≤ 2 mm. Preferably, the thickness D2 of the adhesive layer satisfies 0.025 mm ≤ D2 ≤ 0.3 mm. Preferably, the bonding strength of the adhesive layer is greater than or equal to 15 N / in, where N / in is Newton / inch.

[0046] like Figure 3 and Figure 6 As shown, optionally, two first through holes 101 may be provided, and the two first through holes 101 are opened corresponding to the positions of the pole and the battery QR code respectively. Figure 4 and Figure 7 As shown, optionally, the first through hole 101 can also be set to one, and the first through hole 101 is opened corresponding to the position of the pole and the battery QR code.

[0047] like Figure 1 As shown, this embodiment also provides a battery, including a cover plate and the above-mentioned top patch, the top patch is attached to the cover plate, and the battery can protect the cover plate during laser welding to ensure the quality of the cover plate and the battery.

[0048] Preferably, the battery further comprises a shell 5 and a blue film 6. The blue film 6 is wrapped on the shell 5, which can protect the shell 5 from being directly damaged by welding slag splashes during welding, and can also protect the shell 5 during other transportation and manufacturing processes. The cover plate is welded to the opening of the shell 5, and the cover plate and the shell 5 together form a sealed inner cavity. The top patch and the blue film 6 together protect the battery.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A top patch, characterized in that: A first through hole is provided on the top patch, and the top patch can be attached to the cover plate. The first through hole is provided corresponding to the position of the pole and / or the battery QR code on the cover plate. The length and width of the cover plate are a and c respectively, and the length and width of the top patch are A and C respectively, satisfying: 0.5mm≤aA≤8mm, and / or, 0.5mm≤cC≤8mm.

2. The top patch according to claim 1, characterized in that: The top patch is provided with a second through hole, and the second through hole is opened corresponding to the explosion-proof valve of the cover plate.

3. The top patch according to claim 2, characterized in that: The top patch is provided with a first positive and negative electrode mark, or the top patch is provided with a third through hole, and the third through hole is opened corresponding to the second positive and negative electrode mark of the cover plate.

4. The top patch according to claim 3, characterized in that: The edge width of the first through hole is greater than or equal to 1 mm; And / or, the edge width of the second through hole is greater than or equal to 1 mm; And / or, the edge width of the third through hole is greater than or equal to 1 mm.

5. The top patch according to claim 1, characterized in that: The top patch includes a body layer and an adhesive layer, and the adhesive layer can be attached and bonded to the cover plate.

6. The top patch according to claim 5, characterized in that: The thickness D1 of the main body layer satisfies 0.1 mm≤D1≤2 mm, and / or the thickness D2 of the adhesive layer satisfies 0.025 mm≤D2≤0.3 mm.

7. The top patch according to claim 5, characterized in that: The adhesive strength of the adhesive layer is greater than or equal to 15N / in.

8. The top patch according to claim 1, characterized in that: There are two first through holes, and the two first through holes are opened corresponding to the positions of the pole and the battery QR code respectively.

9. A battery, characterized in that It comprises a cover plate and a top patch as claimed in any one of claims 1 to 8, wherein the top patch is attached to the cover plate.

10. The battery according to claim 9, characterized in that It also includes a shell and a blue film, wherein the blue film is wrapped on the shell, the cover plate is welded to the opening of the shell, and the cover plate and the shell together form a sealed inner cavity.

Images