CN-224232899-U - Structure of sealing welding sealing nail

Abstract

The utility model discloses a structure of a seal welding sealing nail, which comprises a top cover plate, wherein a liquid injection port is formed in the top cover plate and is divided into a round table section and a cylindrical section, the sealing nail is inserted into the liquid injection port and is divided into a sealing cover and a sealing nail body, the sealing nail body is inserted into the cylindrical section of the liquid injection port, the sealing cover is clamped in the round table section, the top of the sealing cover extends outwards and is erected on the top surface of the top cover plate, and a groove is formed in the top surface of the top cover plate and outside a welding seam between the sealing cover and the top cover plate. According to the utility model, the welding mode of the battery cell liquid injection port is optimized, the adverse effects of electrolyte pollution of the liquid injection port and the gap size of the liquid injection port on seal welding are reduced, the welding difficulty is reduced, the welding yield is improved, the reworking operation is simplified, and the stability and the firmness of the liquid injection port welding are ensured.

Inventors

• LIU JIALONG

Assignees

• 中汽新能(滁州)电池科技有限公司

Dates

Publication Date

20260512

Application Date

20250208

Claims (6)

1. 1. The structure of the sealing welding sealing nail comprises a top cover plate (1) and is characterized in that a liquid injection port (12) is formed in the top cover plate (1), the liquid injection port (12) is divided into a round table section and a cylindrical section, the sealing nail is inserted into the liquid injection port (12), the sealing nail is divided into a sealing cover (2) and a sealing nail body (3), the sealing nail body (3) is inserted into the cylindrical section of the liquid injection port (12), the sealing cover (2) is clamped in the round table section, the top of the sealing cover (2) extends outwards and is erected on the top surface of the top cover plate (1), and a groove (11) is formed in the outer side of a welding seam between the sealing cover (2) and the top cover plate (1) on the top surface of the top cover plate (1).
2. 2. The structure of a sealing welding sealing nail according to claim 1, characterized in that the sealing nail body (3) is divided into a nail head (31) and a nail rod (32), the top of the nail rod (32) is fixedly connected to the bottom of the sealing cover (2), the top of the nail head (31) is fixedly connected to the bottom of the nail rod (32), a circular ring (33) is fixedly sleeved on the outer side of the middle of the nail rod (32), and a first sealing ring (4) sleeved on the nail rod (32) is arranged between the circular ring (33) and the top of the nail head (31).
3. 3. The structure of the sealing welding sealing nail according to claim 2, wherein the side surface of the circular ring (33) is provided with a ring groove (331), and a second sealing ring (5) sleeved outside the circular ring (33) is arranged in the ring groove (331).
4. 4. A structure of a sealing welding sealing nail according to claim 3, characterized in that the first sealing ring (4) and the second sealing ring (5) are in interference fit with the liquid injection port (12).
5. 5. The structure of the seal welding sealing nail according to claim 1, wherein a triangular inclined surface (22) is formed at a corner where the outer side surface of the sealing cover (2) contacts with the top surface of the top cover plate (1).
6. 6. The structure of a seal welding sealing nail according to claim 1, characterized in that the top surface of the sealing cover (2) is provided with a vertical groove (21).

Description

Structure of sealing welding sealing nail Technical Field The utility model relates to the technical field of sealing nails, in particular to a structure of a sealing welding sealing nail. Background The existing sealing nail is matched with the liquid injection port, and then the welding mode is slit welding, namely the slit of the sealing nail and the liquid injection port is welded, but the bad influence such as welding explosion points and the like is easy to occur due to the influence of electrolyte pollutants and the like on the liquid injection port, in addition, the welding mode is slit welding, the bad influence of the gap between the sealing nail and the liquid injection port is easy to occur, in order to meet the welding firmness, the welding energy is required to be increased, the sealing structure of the liquid injection port is easy to influence, and if the welding mode has bad welding, secondary welding is inconvenient to perform, and the reworking procedure is troublesome. Disclosure of utility model The utility model aims to provide a structure of a sealing welding sealing nail, which aims to solve the defects in the prior art. In order to achieve the purpose, the technical scheme is that the sealing welding sealing nail structure comprises a top cover plate, wherein a liquid injection port is formed in the top cover plate and is divided into a round table section and a cylindrical section, sealing nails are inserted into the liquid injection port and are divided into sealing covers and sealing nail bodies, the sealing nail bodies are inserted into the cylindrical section of the liquid injection port, the sealing covers are clamped in the round table section, the top of each sealing cover extends outwards and is erected on the top surface of the top cover plate, and grooves are formed in the top surface of the top cover plate, which are located outside welding seams of the sealing covers and the top cover plate. Further, sealed nail body divide into pin fin and nail pole, the top fixed connection of nail pole is on the bottom of sealed lid, the top fixed connection of pin fin is on the bottom of nail pole, the fixed ring that has cup jointed in the nail pole middle part outside, be provided with the first sealing washer of cover on the nail pole between ring and the pin fin top. Further, an annular groove is formed in the side face of the circular ring, and a second sealing ring sleeved on the outer side of the circular ring is arranged in the annular groove. Further, interference fit is adopted between the first sealing ring, the second sealing ring and the liquid injection port. Further, a triangular inclined plane is formed at the corner of the outer side surface of the sealing cover, which is in contact with the top surface of the top cover plate. Further, a vertical groove is formed in the top surface of the sealing cover. In the technical scheme, the structure of the sealing welding sealing nail provided by the utility model has the beneficial effects that: According to the utility model, the welding mode of the battery cell liquid injection port is optimized, the adverse effects of electrolyte pollution of the liquid injection port and the gap size of the liquid injection port on seal welding are reduced, the welding difficulty is reduced, the welding yield is improved, the reworking operation is simplified, and the stability and the firmness of the liquid injection port welding are ensured. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art. FIG. 1 is a schematic diagram of a structure provided in an embodiment of the present utility model; FIG. 2 is an enlarged view of FIG. 1A according to an embodiment of the present utility model; fig. 3 is an enlarged view of B in fig. 1 according to an embodiment of the present utility model. Reference numerals illustrate: 1. Top cover plate 11, groove 12, liquid injection port 2, sealing cover, nail 21, vertical groove 22, triangle inclined plane 3, sealing nail body 31, nail head 32, nail rod 33, circular ring 331, ring groove 4, first sealing ring 5, second sealing ring. Detailed Description In order to make the objects, technical solutions an