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Lithium battery top cover assembly and secondary battery

A lithium battery and top cover technology, which is applied to battery pack components, electrical components, circuits, etc., can solve the problem of poor liquid sealing inside the secondary battery, reducing the reliability of the secondary battery, and disconnecting the pole from the top cover plate. and other problems, to achieve the effect of increasing the bonding stability, improving the stability and reducing the production cost

Pending Publication Date: 2021-10-29
武汉富航精密工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of secondary battery assembly and packaging, there are certain deficiencies in the traditional package cover assembly and the corresponding assembly method. The cover assembly package is only sealed with a simple sealing ring, which has poor sealing performance for the liquid inside the secondary battery.
[0004] At the same time, due to the complex structure of the pole itself and the assembly process, it will not only affect the assembly efficiency of the secondary battery, but after the pole is fixed on the top cover, the pole will often be separated from the top cover due to insufficient fixing force. connection phenomenon, thereby reducing the reliability of the secondary battery

Method used

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  • Lithium battery top cover assembly and secondary battery
  • Lithium battery top cover assembly and secondary battery
  • Lithium battery top cover assembly and secondary battery

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Please refer to Figure 1 to Figure 15 , an embodiment of the present invention provides a lithium battery top cover assembly, including:

[0056] The top cover plate 1 is formed with several top cover plate injection molding via holes 11 and several top cover plate bite pattern grooves 12, such as Figure 11 to Figure 14 shown;

[0057] The first seal 2 and the second seal 3 are both arranged on the top cover plate 1, and the first seal 2 and the second seal 3 are respectively formed with numbers corresponding to the injection molding holes 11 of the top cover plate. Injection molding via holes (21, 31) of a seal, such as Figure 1 to Figure 3 shown;

[0058] The first electrode terminal 4 and the second electrode terminal 5, the first electrode terminal 4 is arranged on the first sealing member 2, the second electrode terminal 5 is arranged on the second sealing member 3, and on the first electrode terminal 4 Several terminal injection molding via holes (41, 51) c...

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Abstract

The invention discloses a lithium battery top cover assembly. The lithium battery top cover assembly comprises a top cover plate, a first sealing element and a second sealing element, a first electrode terminal and a second electrode terminal, a lower insulating bracket, and a first fixing member and a second fixing member. A first rubber body formed on the first fixing member penetrates through a terminal injection molding via hole, a sealing element injection molding via hole and a top cover plate injection molding via hole and is connected with the lower insulating bracket into a whole, and a first occlusion rubber body formed on the first fixing member is embedded into a terminal texture groove and the top cover plate texture groove; a second rubber body formed on the second fixing member penetrates through the terminal injection molding via hole, the sealing element injection molding via hole and the top cover plate injection molding via hole and is connected with the lower insulating bracket into a whole, and a second occlusion rubber body formed on the second fixing member is embedded into the terminal texture groove and the top cover plate texture groove to form an integrated sealing structure. The invention further discloses an injection molding assembling method of the lithium battery top cover assembly.

Description

technical field [0001] The invention relates to a lithium battery top cover assembly, in particular to a lithium battery top cover assembly and a secondary battery. Background technique [0002] The development and utilization of secondary batteries is related to the continuous development of new energy technologies. As the current clean energy, the development and utilization of electric power is a long-term strategic goal. [0003] In the process of assembling and packaging the secondary battery, there are certain deficiencies in the traditional packaging cover plate assembly and the corresponding assembly method. The cover plate assembly package is only sealed with a simple sealing ring, which has poor sealing performance for the liquid inside the secondary battery. [0004] At the same time, due to the complex structure of the pole itself and the assembly process, it will not only affect the assembly efficiency of the secondary battery, but after the pole is fixed on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/559H01M50/188H01M50/15
CPCY02E60/10
Inventor 陈中元
Owner 武汉富航精密工业有限公司
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