Battery terminal structure and battery

Abstract

The utility model discloses a battery terminal structure and a battery. The battery terminal structure comprises a shell, the terminal is arranged at the end part of the shell; the pole hole is formed in the terminal; the sealing element is arranged in the pole hole; and the terminal and the pole hole are sealed by using the sealing element. According to the utility model, the terminal is provided with the pole hole, so that a large welding process window is ensured. The welding structure solves the problem that the post hole is easy to be poor in sealing after being welded due to fluctuation of welding energy, the sealing element is arranged after being welded, the sealing element is welded again, and the reliability of the welding structure is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium - ion batteries, and particularly relates to a battery terminal structure and a battery. Background Art

[0002] A lithium - ion battery refers to a battery containing lithium (including metallic lithium, lithium alloys, lithium ions, lithium polymers, etc.) in its electrochemical system. Lithium - ion batteries have the advantages of high energy density, good cycling performance, and long service life, and are widely used in products such as electric devices, electrical appliances, and intelligent machines.

[0003] Currently, in the manufacturing process of existing lithium - ion batteries, a pole - column hole is generally provided at the upper end of the battery terminal. After the battery terminal is welded to the positive / negative current collector plate, due to the fluctuation of welding energy, the problem of poor sealing is likely to occur at the pole - column hole. Therefore, there is a risk of liquid leakage in the battery terminals in the related technologies. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art. To achieve the above purpose, a battery terminal structure and a battery are adopted to solve the problems raised in the above background art.

[0005] A battery terminal structure and a battery, comprising:

[0006] A housing;

[0007] A terminal disposed at the end of the housing;

[0008] A pole - column hole disposed on the terminal; and

[0009] A seal disposed in the pole - column hole;

[0010] The terminal and the pole - column hole are sealed by using the seal.

[0011] As a further scheme of the utility model: the terminal and the housing adopt a riveted fixed structure. The riveted fixed structure can ensure a firm connection between the terminal and the housing, avoiding loosening or falling off caused by vibration or impact, thereby improving the service life and reliability of the device.

[0012] As a further scheme of the utility model: a fluororubber layer is provided at the connection between the terminal and the housing. The fluororubber layer has good sealing performance and corrosion resistance, can effectively prevent external substances such as moisture and dust from entering the device interior, protect the internal circuit and components from damage, and improve the waterproof and dust - proof performance of the device.

[0013] As a further solution of the present utility model: A fixing ring is arranged outside the fluororubber layer. The arrangement of the fixing ring can further enhance the stability and sealing performance of the fluororubber layer, ensure its close fit with the terminal and the housing, thereby improving the overall sealing performance of the device.

[0014] As a further solution of the present utility model: The terminal and the housing are provided with an outer plastic and an inner insulating part for insulation. The arrangement of the outer plastic and the inner insulating part can effectively isolate the electrical signals between the terminal and the housing, avoid equipment failures or damages caused by electrical short circuits, and improve the safety and stability of the device.

[0015] As a further solution of the present utility model: The depth range of the pole hole is 1 mm - 5 mm. Defining the depth range of the pole hole enables clear dimensional standards during production or processing, which helps to achieve precise control. This precision is crucial for the manufacture of many precision devices or components and can ensure the performance and quality of the product.

[0016] As a further solution of the present utility model: A chamfer structure is arranged inside the pole hole. The chamfer structure can reduce the friction force when the pole is inserted into the pole hole, make the insertion process smoother, and at the same time prevent the pole from scratching the hole wall when pulled out, thus extending the service life of the device.

[0017] As a further solution of the present utility model: The height of the seal is greater than the height of the terminal.

[0018] On the other hand, a technical solution, a battery, includes a battery terminal structure as described in any one of the above.

[0019] Compared with the prior art, the present utility model has the following technical effects:

[0020] Adopting the above technical solution, through a pole hole provided at the terminal, it is connected to the positive / negative current collector plate by laser welding. The design of the pole hole reduces the difficulty of welding the terminal to the positive / negative current collector plate. Then, a seal is added and filled in the pole hole, and laser welding is continued for sealing to ensure that the sealing performance of the terminal is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following combines the drawings to describe the specific embodiments of the present utility model in detail:

[0022] Figure 1 It is a schematic structural diagram of the battery terminal structure of the disclosed embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the pole hole with a chamfer structure of the disclosed embodiment of the present application.

[0024] In the figure: 1. Housing; 2. Terminal; 3. Pole hole; 4. Seal; 5. Fluororubber layer; 6. Fixed ring; 7. Outer plastic; 8. Inner insulating part. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figure 1 and Figure 2 , in the embodiment of the present invention, a battery terminal structure includes:

[0027] Housing 1;

[0028] Terminal 2 provided at the end of housing 1;

[0029] Pole hole 3 provided on terminal 2; and

[0030] Seal 4 provided in pole hole 3;

[0031] The terminal 2 and the pole hole 3 are sealed by using the seal 4.

[0032] In this embodiment, the terminal 2 and the housing 1 adopt a riveted fixing structure. A fluororubber layer 5 is provided at the connection between the terminal 2 and the housing 1. An outer plastic 7 and an inner insulating part 8 for insulation are provided between the terminal 2 and the housing 1.

[0033] In this embodiment, a fixed ring 6 is provided outside the fluororubber layer 5.

[0034] In this embodiment, the depth range of the pole hole 3 is 1 mm - 5 mm. A chamfer structure is provided inside the pole hole 3.

[0035] In this embodiment, the height of the seal 4 is greater than the height of the terminal 2. Preferably, the seal 4 can be a seal nail structure.

[0036] In the detailed implementation mode, the terminal 2 and the housing 1 adopt a riveted connection method. A fluororubber layer 5 is provided at the connection for sealing. An outer plastic 7 and an inner insulating part 8 are provided between the terminal 2 and the housing 1 for insulation. In order to prevent the fluororubber from being damaged by riveting, a steel fixed ring 6 is provided.

[0037] A pole hole 3 is provided at the terminal 2 and is connected to the positive / negative current collector plate by laser welding. The design of the pole hole 3 reduces the difficulty of welding the terminal 2 to the positive / negative current collector plate. Then, a sealing nail is added and filled in the pole hole 3, and laser welding is continued for sealing. The chamfer can be made at the pole hole 3 of the terminal 2, or the height of the nail can be higher than the surface of the terminal 2 to avoid unevenness on the surface after welding, ensure the flatness of the surface after welding, and affect the subsequent battery pack assembly.

[0038] In another technical solution, a battery includes a battery terminal 2 structure as described in any one of the above.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery terminal structure, characterized in that: include: Housing (1); A terminal (2) disposed at an end of the housing; A pole hole (3) provided on the terminal; as well as A sealing member (4) disposed in the pole hole; The terminal and the pole hole are sealed by using the sealing member.

2. A battery terminal structure according to claim 1, characterized in that: The terminal and the housing are fixed by riveting.

3. A battery terminal structure according to claim 2, characterized in that: A fluororubber layer (5) is provided at the connection between the terminal and the housing.

4. A battery terminal structure according to claim 3, characterized in that: A fixing ring (6) is arranged outside the fluororubber layer.

5. A battery terminal structure according to claim 3, characterized in that: The terminal and the housing are provided with an outer plastic (7) and an inner insulating member (8) for insulation.

6. A battery terminal structure according to claim 4, characterized in that: The depth of the pole hole ranges from 1 mm to 5 mm.

7. A battery terminal structure according to claim 6, characterized in that: A chamfered structure is arranged inside the pole hole.

8. A battery terminal structure according to claim 4, characterized in that: The height of the sealing member is greater than the height of the terminal.

9. A battery, characterized in that: The invention comprises adopting a battery terminal structure as claimed in any one of claims 1 to 8.

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