WO2022077814A1

WO2022077814A1 - Storage battery cover having lead-acid battery

Info

Publication number: WO2022077814A1
Application number: PCT/CN2021/075460
Authority: WO
Inventors: 陈荣华; 王德喜
Original assignee: 广州市凯捷电源实业有限公司; 广州市闽通商贸有限公司
Priority date: 2020-10-14
Filing date: 2021-02-05
Publication date: 2022-04-21
Also published as: WO2022077697A1; JP2023547286A; CN114374031A

Abstract

The present invention provides a storage battery cover, comprising a cover body and a conductive terminal. Either end of the conductive terminal is provided with a wiring portion; a groove is provided on the cover body; the conductive terminal is partially put into the groove, and the cover body exposes the wiring portions; the groove is filled with a seal layer; a cover sheet is provided on the seal layer; and the cover sheet is located on the top of the cover body. According to the present invention, a seal layer is used to strengthen the connection between the conductive terminal and the cover body, such that the defect of easy loosening of the conductive terminal is overcome; in addition, the seal layer seals a joint between a pole and the conductive terminal to prevent a corrosive acid from seeping out of the battery.

Description

A battery cover with a lead-acid battery

technical field

This patent relates to the technical field of lead-acid batteries, in particular to a battery cover.

Background technique

In the prior art, a battery for a motor vehicle includes a lead-acid battery and a battery cover. The battery cover is provided with a terminal, which is mostly fixed on the battery cover with metal screws, as disclosed in CN2018216221506. Technology. The patent uses metal screws to connect the conductive terminals to the cover. For the lead-acid battery used in motor vehicles, after a long time of use, due to the continuous corrosion of the acid in the battery to the connection between the pole and the conductive terminal, the connection between the pole and the conductive terminal will be loose and the acid will seep out. This affects the life of the battery. In addition, the acid will also corrode the screws, and the motor vehicle will be bumpy, and the metal screws and the conductive terminals are easily loosened due to corrosion.

SUMMARY OF THE INVENTION

In order to overcome the disadvantages of the prior art, the present patent provides a battery and a battery cover, wherein the battery cover includes a plastic cover body and conductive terminals on the cover body. A groove is symmetrically arranged on both sides of the cover body, and the conductive terminal is partially put into the groove and forms a concave space with the cover body, and the concave space is filled with a sealing layer. The sealing layer wraps around the conductive terminal, and the sealing layer can also cover the connection between the pole of the battery and the conductive terminal at the same time.

The beneficial technical effect of this patent is that: the connection between the conductive terminal and the cover body is strengthened by the sealing layer, which overcomes the disadvantage that the conductive terminal is easy to loosen; at the same time, the sealing layer seals the connection between the pole and the conductive terminal to prevent corrosive acid solution seeps out of the battery.

Description of drawings

Fig. 1 is the perspective view of the storage battery with lead-acid of the present invention

Figure 2 is a perspective view of the battery cover of the present invention

3 is a perspective view of the overall structure of the battery cover of the present invention after removing the cover

FIG. 4 is a cross-sectional perspective view of FIG. 3A-A

FIG. 5 is a cross-sectional plan view of FIG. 3A-A

Reference numerals: 1 cover body, 12 groove, 13 cover sheet, 2 conductive terminal, 21 conductive terminal bent portion, 22 wiring portion, 23 sealing layer, 3 positioning post, 4 thermal insulation space, 5 conductive electrode post, 6 lead Acid battery, 7 caps.

Detailed ways

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings of the present invention.

See Figures 1-4. A lead-acid battery, comprising a lead-acid battery (6) and a cover (7), the cover (8) comprising a plastic cover body (1), a plastic cover sheet (13) on the top of the cover body (1), and a cover body The edge part of (1) has two symmetrically arranged grooves (12), conductive terminals (2), conductive terminal bending parts (21), wiring parts (22), sealing layers (23), positioning posts (3), A conductive pole (5), a battery (6), and a conductive pole (5) electrically connected to the battery (6). The conductive pole (5) is welded to the conductive terminal (2) and the weld is sealed by welding to prevent the acid in the battery (6) from flowing along the pole (5) to the cover (7), thereby corroding the cover (7) and the parts on the cover (7).

Based on Figure 2, open the cover (13) to obtain Figure 3. It can be seen from Figure 3 that an epoxy resin sealing layer (23) and a bent portion (21) of the conductive terminal wrapped by the sealing layer (23) are arranged between the cover sheet (13) and the bottom of the groove (12). The sealing layer (23) enhances the connection stability between the bent portion (21) of the conductive terminal and the cover body (1), and can prevent the conductive terminal (2) from loosening. In addition, the sealing layer (23) can also cover the connection between the conductive pole (5) and the conductive terminal (2), which can prevent the acid liquid in the battery (6) from flowing into the cover (1). The thermal insulation space (4) is interposed between the bent portion (21) of the conductive terminal and the bottom of the groove (12). The sealing layer (23) includes epoxy resin in the insulating space (4).

In this patent, the conductive terminal (2) includes a wiring part (22) and a bent part (21) located at both ends of the conductive terminal (2). The bent portion is formed by bending the middle portion of the conductive terminal.

This patent also provides a method for manufacturing the above-mentioned battery cover, comprising the following steps:

The first step is to manufacture a plastic cover (1) with two grooves (12) by injection molding. A conductive terminal (2) with a bent portion (21) is produced by machining.

In the second step, put the bent part (21) of the conductive terminal (2) into the groove (12) on the cover (1).

The third step is to weld the joint of the conductive terminal (2) and the conductive pole (5). During the welding process, high temperature will be generated, which is easy to burn the plastic cover (1) 1 and the battery (6). To prevent this, before soldering the conductive terminal (2) and the conductive pole (5), a thermal insulation space (4) needs to be left between the curved portion 21 of the conductive terminal and the bottom of the groove 12. The thermal insulation space (4) can isolate the high temperature generated by welding from the surrounding plastic of the groove (12) and the bottom groove (12), which can prevent the plastic cover (1) from being scalded by high temperature and avoid being located in the groove (12). ), the battery (6) under ) leaks acid.

In the fourth step, epoxy resin material is injected into the heat insulating space 4 and the groove (12), and the epoxy resin material wraps the curved portion (21) of the conductive terminal to form a sealing layer (23).

In the fifth step, the connection parts (22) at both ends of the conductive terminal (2) are fixed on the cover body (1), which can be connected by a snap connection or by a screw.

The sixth step, cover the cover sheet (13), and cover the sealing layer (23) and the conductive parts on the surface of the cover body (1).

Claims

A battery cover with a lead-acid battery, comprising a cover body (1) and a conductive terminal (2), characterized in that there is a bent portion (21) in the middle of the conductive terminal (2), and a curved portion (21) is provided in the middle of the conductive terminal (2). Both ends of the terminal (2) are provided with wiring portions (22), the cover body (1) is provided with grooves (12), and the wiring portions (22) are exposed from the cover body (1), and the grooves (12) It is wrapped by a sealing layer (23), and there is a cover sheet (13) on the sealing layer (23), and the cover sheet (13) is located on the top of the cover body (1).
The battery cover with lead-acid battery according to claim 1, characterized in that, the part of the conductive terminal (2) located between the wiring parts (22) is bent to form the bent part (21), The bent portion (21) of the conductive terminal is in the groove (12) on the cover body (1).
The battery cover with lead-acid battery according to claim 2, characterized in that it further comprises a positioning column (3), the positioning column (3) connects the bent portion (21) of the conductive terminal with the cover The body (1) is fixedly connected.
The battery cover with lead-acid battery according to claim 3, characterized in that, there is a thermal insulation space (4) between the bottom of the bent portion (21) of the conductive terminal and the cover body (1).
The battery cover with lead-acid battery according to claim 2, characterized in that, the bent portion (21) of the conductive terminal and the wiring portion (22) at both ends of the conductive terminal (2) are integrally formed.
The battery cover with lead-acid battery according to claim 1, wherein the sealing layer (23) is an epoxy resin glue layer.
A battery, characterized in that it uses the battery cover described in any one of claims 1 to 6.
A method of manufacturing the battery cover according to any one of claims 1 to 6, characterized in that, comprising the steps of:

The first step is to manufacture a plastic cover (1) with a groove (12) by injection molding and a metal conductive terminal (2) with a curved portion by metal processing;

The second step is to put the curved portion (21) of the conductive terminal (2) into the groove (12) on the cover body (1);

The third step is to weld the junction of the conductive terminal (2) and the conductive pole (5); The insulating space (4) between the groove bottom (12) cannot be filled;

In the fourth step, the epoxy resin material is injected into the heat insulating space (4) and the groove (21), the epoxy resin material covers the bent portion (21) of the conductive terminal, and the epoxy resin material is cured to form a sealing layer (23);

The fifth step is to fix the wiring parts (22) at both ends of the conductive terminal (2) on the cover body (1);

In the sixth step, cover the cover sheet (13) to cover the sealing layer (23) and the conductive parts on the surface of the cover body (1).