CN-224217590-U - Battery waterproof construction and vehicle

Abstract

The embodiment of the application provides a battery waterproof structure and a vehicle, which relate to the technical field of power batteries and are used for solving the technical problems that waterproof glue of the waterproof structure is easy to crack, the waterproof structure is easy to separate, a battery module is water-in, and stability and reliability of a battery are poor.

Inventors

• Request for anonymity
• YIN DI
• WU FEI
• ZHOU XIAO

Assignees

• 纳恩博（常州）科技有限公司

Dates

Publication Date

20260508

Application Date

20250303

Priority Date

20241018

Claims (17)

1. 1. A waterproof structure of a battery, comprising: The shell comprises an upper cover and a shell, wherein the shell is barrel-shaped, and the outer edge of the upper cover is welded or hot-pressed with the shell; The battery module is positioned in the shell, and the upper cover is covered on the battery module; the upper cover is connected with the shell in a sealing way through an adhesive layer; The shell is a blow-molded shell molded by a blow-molding process, or the shell is an injection-molded shell molded by an injection-molding process; when the outer edge of the upper cover is welded with the shell, the outer edge of the upper cover is provided with welding ribs, the welding ribs extend along the circumferential direction of the upper cover, and the welding ribs are arranged in a circumferential manner; The upper cover is welded and connected with the inner surface of the shell through the welding ribs.
2. 2. The waterproof structure of a battery according to claim 1, wherein an end of the welding rib away from the battery module is located in the housing; The upper cover is provided with an upper cover body, the welding ribs are connected with the upper cover body, and the welding ribs are connected to the side peripheral surface of the upper cover body; The welding rib, the upper cover body and the inner surface of the shell form a first groove, and a first bonding layer is arranged in the first groove; The first bonding layer is used for sealing and connecting the upper cover and the shell.
3. 3. The waterproof structure of a battery according to claim 2, wherein a first gap is provided between the upper cover body and the inner surface of the case, the first gap being located at a side of the welding rib away from the battery module; the first groove is annular, and the first bonding layer is annular.
4. 4. The waterproof structure of a battery according to claim 3, wherein the welding rib protrudes from a face of the upper cover facing the case.
5. 5. The waterproof structure of a battery according to claim 2, wherein a face of the welding rib facing the battery module is attached to the battery module.
6. 6. The waterproof structure of the battery according to claim 1, wherein when the outer edge of the upper cover is connected with the shell in a hot pressing way, a hot pressing plate is arranged at the outer edge of the upper cover, extends along the circumferential direction of the upper cover and is arranged in a circumferential way; the upper cover is connected with the inner surface of the shell in a hot pressing mode through the hot pressing plate.
7. 7. The waterproof structure of a battery according to claim 6, comprising a third groove for insertion of the hot pressing support plate; The upper cover is provided with an upper cover body, the hot pressing plate is connected with the upper cover body, and the hot pressing plate is connected to the side peripheral surface of the upper cover body; The hot pressing plate is far away from the side surface of the shell and the upper cover body enclose a third groove, and when the hot pressing plate is connected with the inner surface of the shell in a hot pressing mode, the hot pressing supporting plate is inserted into the third groove to support the hot pressing plate.
8. 8. The waterproof structure of a battery according to claim 7, wherein an end of the hot pressing plate away from the battery module is located in the housing; the hot pressing plate, the upper cover body and the inner surface of the shell form a first groove, and a first bonding layer is arranged in the first groove; The first bonding layer is used for sealing and connecting the upper cover and the shell.
9. 9. The waterproof structure of a battery according to claim 8, wherein the upper cover body and the inner surface of the housing have a first gap, and the first gap is located at a side of the hot pressing plate away from the battery module; the first groove is annular, and the first bonding layer is annular.
10. 10. The waterproof structure of a battery according to claim 8, wherein a face of the hot pressing plate facing the battery module is attached to the battery module.
11. 11. The battery waterproof structure according to any one of claims 2 to 5, 8 to 10, characterized in that the battery waterproof structure comprises: and the wire is electrically connected with the battery module.
12. 12. The waterproof structure of claim 11, wherein the upper cover is provided with a second groove through which the wire rod passes; one end of the wire rod penetrates through the second groove and is electrically connected with the battery module.
13. 13. The waterproof structure of the battery according to claim 12, wherein a second adhesive layer is provided between the second groove and the wire; the second bonding layer is used for sealing a gap between the wire and the second groove.
14. 14. The waterproof structure of a battery according to claim 11, wherein the first adhesive layer surrounds the outside of the wire rod or the first adhesive layer seals a gap between the wire rod and an inner surface of the case.
15. 15. The battery waterproof structure of claim 13, wherein the first adhesive layer and the second adhesive layer are glue.
16. 16. The waterproof structure of a battery according to any one of claims 1 to 10, wherein a receiving chamber is provided between the upper cover and the case; the battery module is positioned in the accommodating cavity.
17. 17. A vehicle comprising a battery waterproof structure according to any one of claims 1 to 16.

Description

Battery waterproof construction and vehicle Technical Field The application relates to the technical field of power batteries, in particular to a battery waterproof structure and a vehicle. Background In recent years, the development of the vehicle industry in China is rapid, and electric vehicles become important riding tools in modern life. Among them, in electric vehicles such as a power assisted vehicle, a scooter, and a balance car, there is an increasing demand for performance and reliability of an internal battery. Generally, people often use electric vehicles such as mopeds, scooters, balance cars and the like in daily life. Among them, the electrical performance of the battery in most electric vehicles is degraded or failed, and even heat loss occurs, mainly due to the failure of the waterproof structure of the battery. At present, the common waterproof structure of the battery is mainly sealed by gluing. However, the waterproof glue of the waterproof structure is easy to crack, the waterproof structure is easy to separate, water is fed into the battery module, and the stability and reliability of the battery are poor. Therefore, the application provides a waterproof structure of a battery and a vehicle. Disclosure of utility model The application provides a waterproof structure of a battery and a vehicle, which are used for solving the technical problems that waterproof glue of the waterproof structure is easy to crack, the waterproof structure is easy to separate, a battery module is water-in, and the stability and reliability of the battery are poor. In order to achieve the above object, the embodiment of the present application provides the following technical solutions: In a first aspect, an embodiment of the present application provides a waterproof structure for a battery, including: The shell comprises an upper cover and a shell, wherein the shell is barrel-shaped, and the outer edge of the upper cover is welded or hot-pressed with the shell; The battery module is positioned in the shell, and the upper cover is covered on the battery module. In some embodiments of the application, the upper cover is sealingly connected to the housing by an adhesive layer. In some embodiments of the application, the housing is a blow molded housing formed by a blow molding process or the housing is an injection molded housing formed by an injection molding process. In some embodiments of the present application, when the outer edge of the upper cover is welded to the housing, the outer edge of the upper cover has a welding rib, the welding rib extends along the circumferential direction of the upper cover, and the welding rib is arranged in a circumferential ring; The upper cover is welded and connected with the inner surface of the shell through the welding ribs. In some embodiments of the application, an end of the welding rib remote from the battery module is located within the housing; The upper cover is provided with an upper cover body, the welding ribs are connected with the upper cover body, and the welding ribs are connected to the side peripheral surface of the upper cover body; The welding rib, the upper cover body and the inner surface of the shell form a first groove, and a first bonding layer is arranged in the first groove; The first bonding layer is used for sealing and connecting the upper cover and the shell. In some embodiments of the present application, a first gap is formed between the upper cover and the inner surface of the case, and the first gap is located at a side of the welding rib away from the battery module; the first groove is annular, and the first bonding layer is annular. In some embodiments of the application, the welding rib protrudes from a face of the upper cover facing the housing. In some embodiments of the application, a surface of the welding rib facing the battery module is attached to the battery module. In some embodiments of the application, when the outer edge of the upper cover is connected with the shell in a hot pressing way, a hot pressing plate is arranged at the outer edge of the upper cover, and extends along the circumferential direction of the upper cover and is arranged in a circumferential way; the upper cover is connected with the inner surface of the shell in a hot pressing mode through the hot pressing plate. In some embodiments of the application, a third groove for insertion of the hot press support plate is included; The upper cover is provided with an upper cover body, the hot pressing plate is connected with the upper cover body, and the hot pressing plate is connected to the side peripheral surface of the upper cover body; The hot pressing plate is far away from the side surface of the shell and the upper cover body enclose a third groove, and when the hot pressing plate is connected with the inner surface of the shell in a hot pressing mode, the hot pressing supporting plate is inserted into the third groove to support the hot pressing pla