Adapter piece and battery

Abstract

The utility model belongs to the technical field of secondary batteries, and particularly relates to an adapter piece and a battery, which comprise a first piece body and a second piece body which are of a split type independent structure, a connecting and fixing area is arranged between the first sheet body and the second sheet body, a first tab welding area is arranged on the first sheet body, and a second tab welding area is arranged on the second sheet body; the connecting piece has the beneficial effects that the connecting piece is designed into a split type modular structure, and after each module of the connecting piece is respectively welded with the tab bundle and is detected, each module is mounted together to form the whole connecting piece; therefore, the situation that the whole product becomes a defective product or is scrapped due to welding defects of any tab bundle or problems of the roll core is avoided, cost waste is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of secondary batteries, and in particular relates to a switching piece and a battery. Background Art

[0002] The battery generally includes a winding core, an electrolyte, a battery shell containing the winding core and the electrolyte, and a top cover assembled on the battery shell. When the battery is assembled into the shell, the connection between the winding core and the top cover is generally achieved through an adapter.

[0003] In the prior art, most adapters are designed in a "mountain" shape or a "convex" shape and are formed as an integral unit. Both sides of the adapter need to be connected to the tab bundle of the winding core by welding. When the tab bundle on either side of the adapter is welded or the winding core has defects, the entire battery will be affected and become defective or scrapped, resulting in cost waste. Utility Model Content

[0004] The purpose of the utility model is to provide a switching chip and a battery in view of the above-mentioned technical problems, so as to achieve the effect of improving the qualified rate and reducing the cost loss.

[0005] In view of this, the utility model provides a transfer sheet, comprising:

[0006] A first sheet and a second sheet of a split independent structure;

[0007] A connection and fixing area is provided between the first sheet and the second sheet, a first tab welding area is provided on the first sheet, and a second tab welding area is provided on the second sheet.

[0008] Furthermore, an opening structure connected to the edge of the first sheet body is provided on one side of the first tab welding area, and an opening structure connected to the edge of the second sheet body is also provided on the second tab welding area.

[0009] Furthermore, both the first tab welding area and the second tab welding area are provided with a step chamfer structure.

[0010] Furthermore, the connection fixing area is a welding fixing area between the first sheet body and the second sheet body.

[0011] Furthermore, the second sheet is provided with a step groove, the first sheet is mounted on the step groove, and the welding fixing area is provided between the first sheet and the step groove.

[0012] Furthermore, the welding fixing area is a runway-type structure.

[0013] Furthermore, a pole is provided on the second sheet.

[0014] Furthermore, the pole is a racetrack-type column structure.

[0015] Furthermore, the pole is arranged on the step groove, and the first sheet is provided with a pole groove for the pole to pass through.

[0016] Furthermore, the first tab welding area, the second tab welding area and the welding fixing area are all provided with a frosted recessed structure.

[0017] A battery comprises a switching piece as described in any one of the above items.

[0018] The beneficial effects of the utility model are:

[0019] 1. By designing the adapter into a split modular structure, after each module of the adapter is welded to the tab bundle and tested, the modules are installed together to form the entire adapter, thereby avoiding defects in the welding of any tab bundle or problems with the winding core that affect the entire product and turn it into a defective product or scrap, reducing cost waste and improving economic benefits.

[0020] 2. The tab bundle is hidden in the opening structure of the tab welding area, which provides a certain degree of protection for the tab and reduces the volume occupied by the tab bundle in the battery top cover structure, thereby effectively improving the space utilization of the battery in the height direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure explosion of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model installed on a battery cell;

[0024] The symbols in the figure are:

[0025] 1. First sheet; 2. Second sheet; 3. First tab welding area; 4. Second tab welding area; 5. Pole; 6. Step groove; 7. Pole groove; 8. Pole tab bundle; 9. Welding fixing area. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0028] Embodiment 1:

[0029] This embodiment provides a transfer sheet, including:

[0030] A first sheet 1 and a second sheet 2 of a split independent structure;

[0031] A connection and fixing area is provided between the first sheet body 1 and the second sheet body 2 , and a first tab welding area 3 is provided on the first sheet body 1 , and a second tab welding area 4 is provided on the second sheet body 2 .

[0032] In this technical solution, the first tab welding area 3 on the first sheet 1 and the second tab welding area 4 on the second sheet 2 are respectively welded to the tab bundle 8, and then after relevant inspections, the first sheet 1 and the second sheet 2 are tightly connected together through the connecting and fixing area.

[0033] By designing the adapter plate into a split modular structure, after each module of the adapter plate is welded to the tab bundle 8 and tested, the modules are installed together to form the adapter plate as a whole, thereby avoiding defects in the welding of any tab bundle 8 or problems with the winding core that affect the entire product and turn it into a defective product or scrap, reducing cost waste and improving economic benefits.

[0034] Embodiment 2:

[0035] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0036] Furthermore, an opening structure connected to the edge of the first sheet body 1 is provided on one side of the first tab welding area 3 , and an opening structure connected to the edge of the second sheet body 2 is also provided on the second tab welding area 4 .

[0037] In the present technical solution, an opening structure is provided on both the first pole tab welding area 3 and the second pole tab welding area 4, and the opening structure is adapted to the width of the pole tab bundle 8. When the pole tab bundle 8 is respectively welded to the first pole tab welding area 3 and the second pole tab welding area 4, the pole tab bundle 8 is located in the opening structure of the welding area.

[0038] Through this structural design, the tab bundle 8 is hidden in the opening structure of the tab welding area, which provides a certain degree of protection for the tab and reduces the volume occupied by the tab bundle 8 in the battery top cover structure, thereby effectively improving the space utilization of the battery in the height direction.

[0039] Embodiment 3:

[0040] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0041] Furthermore, the first tab welding area 3 and the second tab welding area 4 are both provided with a step chamfer structure.

[0042] In the present technical solution, through this structural design, a chamfer structure is set on the first pole lug welding area 3 and the second pole lug welding area 4. When the pole lug bundle 8 is welded on the pole lug welding area, the chamfer structure can reduce the cutting stress generated by the pole lug welding area on the pole lug bundle 8, thereby reducing the chance of defects in the pole lug bundle 8, thereby improving the pass rate and reducing cost losses.

[0043] Embodiment 4:

[0044] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0045] Furthermore, the connection and fixing area is a welding and fixing area 9 between the first sheet body 1 and the second sheet body 2 .

[0046] In the present technical solution, after the first tab welding area 3 of the first sheet 1 and the second tab welding area 4 of the second sheet 2 are respectively welded and fixed to the tab bundle 8, the first sheet 1 and the second sheet 2 are seamlessly spliced ​​together, and then the first sheet 1 and the second sheet 2 are welded and connected through the welding fixing area 9 by laser welding or ultrasonic welding.

[0047] Embodiment 5:

[0048] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] Furthermore, a step groove 6 is provided on the second sheet 2 , the first sheet 1 is mounted on the step groove 6 , and a welding fixing area 9 is provided between the first sheet 1 and the step groove 6 .

[0050] In the present technical solution, a step groove 6 is provided on the second sheet 2, the first sheet 1 is structurally adapted to the step groove 6, the first sheet 1 is provided on the step groove 6, and the welding fixing area 9 is provided on the first sheet 1, and the first sheet 1 and the step groove 6 are welded and fixed by laser welding, ultrasonic welding or the like, thereby enhancing the installation firmness of the first sheet 1 on the step groove 6, thereby improving the connection firmness of the first sheet 1 and the second sheet 2, and after welding, the end faces of the first sheet 1 and the second sheet 2 are flush.

[0051] Furthermore, the welding fixing area 9 is a runway-shaped structure. With this structural design, a reasonable welding fixing area can be provided between the first sheet 1 and the second sheet 2, and no welding metal scraps are left in the corners.

[0052] Embodiment 6:

[0053] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0054] Furthermore, a pole 5 is provided on the second sheet body 2 .

[0055] Furthermore, the pole 5 is a racetrack-type column structure.

[0056] In the present technical solution, the pole 5 is formed on the second sheet 2, which is the output end of the battery during discharge and the input end during charging, plays the role of transmitting electric energy, and is connected to the top cover and the adapter when the battery is assembled. The shape of the pole 5 can be a rectangular parallelepiped, a cylinder or a column structure of other shapes; preferably, the shape of the pole 5 is designed to be a runway-shaped column structure, which is convenient for connecting the pole and the top cover.

[0057] Embodiment 7:

[0058] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0059] Furthermore, the pole 5 is arranged on the step groove 6 , and the first sheet 1 is provided with a pole groove 7 for the pole 5 to pass through.

[0060] In the present technical solution, when the first sheet 1 and the second sheet 2 are assembled together, the first sheet 1 is installed on the step groove 6, and the pole 5 on the second sheet 2 is arranged through the pole groove 7 of the first sheet 1. Through this structural design, the first sheet 1 can be prevented from being offset in the step groove 6, which plays a positioning role in the assembly of the first sheet 1 and the second sheet 2, and facilitates subsequent welding processing.

[0061] Embodiment 8:

[0062] This embodiment provides a transfer sheet, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] Furthermore, the first tab welding area 3 , the second tab welding area 4 and the welding fixing area 9 are all provided with frosted recessed structures.

[0064] In the present technical solution, the texture of the frosted concave structure can be diagonal, dot or other irregular textures. When welding, the frosted concave structure has good absorption performance for laser or ultrasonic energy, so that more energy is absorbed by the welding area, promoting material melting and improving welding bonding ability. In addition, the high temperature environment during welding may cause gas pyrolysis in the welding area. The frosted concave structure can quickly release the gas at high temperature, reduce the possibility of gas being trapped, and improve welding quality.

[0065] Embodiment 9:

[0066] This embodiment provides a battery, comprising a switching piece according to any one of the above embodiments.

[0067] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A transfer sheet, characterized in that: include: A first sheet (1) and a second sheet (2) of a split independent structure; A connection fixing area is provided between the first sheet (1) and the second sheet (2), and a first tab welding area (3) is provided on the first sheet (1), and a second tab welding area (4) is provided on the second sheet (2).

2. The adapter according to claim 1, characterized in that: An opening structure which is in conduction with the edge of the first sheet (1) is provided on one side of the first tab welding area (3), and an opening structure which is in conduction with the edge of the second sheet (2) is also provided on the second tab welding area (4).

3. The adapter according to claim 1, characterized in that: The first pole tab welding area (3) and the second pole tab welding area (4) are both provided with a step chamfer structure.

4. The adapter according to claim 1, characterized in that: The connection fixing area is a welding fixing area (9) between the first sheet body (1) and the second sheet body (2).

5. The adapter according to claim 4, characterized in that: The second sheet (2) is provided with a step groove (6), the first sheet (1) is mounted on the step groove (6), and the welding fixing area (9) is provided between the first sheet (1) and the step groove (6).

6. The adapter according to claim 5, characterized in that: The welding fixing area (9) is a runway-type structure.

7. The adapter according to claim 5, characterized in that: The second sheet body (2) is provided with a pole (5).

8. The adapter according to claim 7, characterized in that: The pole (5) is a racetrack-type column structure.

9. The adapter according to claim 7, characterized in that: The pole (5) is arranged on the step groove (6), and the first sheet (1) is provided with a pole groove (7) for the pole (5) to pass through.

10. A battery, characterized in that: A transfer sheet comprising any one of claims 1 to 9.

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