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Injection molding assembling method of secondary battery top cover assembling and top cover assembly

A secondary battery and assembly method technology, which is applied in the direction of battery cover/end cover, small-sized battery/battery pack, battery, etc., can solve the problem of reducing the reliability of the secondary battery, disconnecting the pole from the top cover, Affect the assembly efficiency of secondary batteries and other issues, to achieve the effect of increasing bonding stability, reducing production costs, and increasing fixing strength

Active Publication Date: 2021-04-30
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

[0005] 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 disconnected from the top cover due to insufficient fixing force. phenomenon, thereby reducing the reliability of the secondary battery

Method used

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  • Injection molding assembling method of secondary battery top cover assembling and top cover assembly
  • Injection molding assembling method of secondary battery top cover assembling and top cover assembly
  • Injection molding assembling method of secondary battery top cover assembling and top cover assembly

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Embodiment Construction

[0046] In order to further illustrate the technical means and functions adopted by the present invention to achieve the intended purpose, the specific implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0047] Please refer to Figure 1 to Figure 3 , an embodiment of the present invention provides an injection molding assembly method for a secondary battery top cover assembly 100, including the following steps:

[0048] (1) Prepare the following components: top cover plate 1, first electrode terminal 2, second electrode terminal 3, first seal 8, second seal 9, explosion-proof structure 4 and lower insulating bracket 5;

[0049] (2) Assembling the lower insulating bracket 5 on the bottom surface of the top cover plate 1;

[0050] (3) Assemble the first sealing member 8 on the bottom surface of the first electrode terminal 2, and then assemble the first electrode terminal 2 equ...

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Abstract

The invention discloses an injection molding assembling method of a secondary battery top cover assembly. The injection molding assembling method comprises the following steps: (1), preparing a top cover plate, a first electrode terminal, a second electrode terminal, a first sealing element, a second sealing element, an explosion-proof structure and a lower insulating bracket; (2), assembling the lower insulating bracket on the top cover plate; (3), assembling the first electrode terminal assembled with the first sealing element and the second electrode terminal assembled with the second sealing element on the top cover plate; (4), assembling the explosion-proof structure on the top cover plate; and (5), putting the product into a mold, performing injection molding, and enabling a first colloid of the molded first fixing piece to penetrate through the first electrode terminal, the first sealing piece and the top cover plate from top to bottom; enabling a second colloid of the formed second fixing piece to penetrate through the second electrode terminal, the second sealing piece and the top cover plate from top to bottom; meanwhile, integrally forming the explosion-proof structure and the top cover plate in an injection molding mode, and forming an integrated sealing structure. The invention further discloses the secondary battery top cover assembly obtained by implementing the injection molding assembly method.

Description

technical field [0001] The invention relates to the field of secondary batteries, in particular to an injection molding assembly method for a top cover assembly of a secondary battery and the top cover assembly. Background technique [0002] New energy vehicles are being widely promoted at home and around the world, but there are still many things to improve in order to completely replace fuel vehicles. For example, the mileage of the car is small, the cost of the battery pack is high, and the reliability of the battery pack needs to be further resolved. Based on the above problems, higher requirements are put forward for the power battery, the core component of electric vehicles, such as higher energy density and lower cost for the power battery. [0003] At present, the power battery generally adopts a square hard shell structure. The power battery shell includes a shell and a top cover assembly. The power battery shell provides a closed space to accommodate the electrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/188H01M50/186H01M50/147H01M50/543H01M50/30B29C45/14
CPCB29C45/14467H01M2220/20Y02E60/10
Inventor 陈中元
Owner 武汉富航精密工业有限公司
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