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Cover plate structure and battery case for lithium ion battery and lithium ion battery

A lithium-ion battery and battery cover technology, which is applied in the direction of secondary batteries, structural parts, battery pack parts, etc., can solve the problems such as twisting of poles under force, and achieves difficult twisting, good sealing performance, and simple structure Effect

Inactive Publication Date: 2012-08-15
TIANJIN ENERGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a cover plate structure for a lithium-ion battery to solve the problem that the pole may be twisted under force during the external connection process in view of the problems existing in the above-mentioned background technology

Method used

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  • Cover plate structure and battery case for lithium ion battery and lithium ion battery
  • Cover plate structure and battery case for lithium ion battery and lithium ion battery
  • Cover plate structure and battery case for lithium ion battery and lithium ion battery

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Embodiment Construction

[0024] In order to make those skilled in the art better understand the present invention, the present invention will be described in further detail below in conjunction with accompanying drawing:

[0025] The cover plate structure of the lithium-ion battery, for the aluminum shell battery: the positive pole 6 is connected to the cover plate by laser welding, see Figure 4 , the end surface 10 of the positive pole is circular, the thickness of the end surface 10 of the positive pole is the same as that of the cover plate 4, the thickness of the end surface 10 of the positive pole can also be higher than that of the cover plate 4 and the thickness does not exceed 0.5mm, and the thickness of the end surface 10 of the positive pole column on the cover plate 4 is the same as that of the end surface 10 of the positive pole The positive pole 6 is put into the round hole of the cover plate 4, and is connected with the cover plate 4 by laser welding.

[0026] The cover plate structure ...

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Abstract

The invention discloses a cover plate structure for a lithium ion battery, which relates to lithium ion batteries and comprises a cover plate, a plastic seal part, pole columns, a ceramic insulating plate and an explosion-proof valve. One of the pole columns is connected with the cover plate by means of laser welding, and the plastic seal part and the ceramic insulating plate are combined to enable the other pole column to be connected with the cover plate to realize sealing and insulation. The invention further discloses a battery case with the battery cover plate and the lithium ion battery. The cover plate structure, the battery case and the lithium ion battery are simple in structure, high in tightness and not easy to twist.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a cover plate structure, a battery shell and a battery of the lithium ion battery. Background technique [0002] At present, the application range of lithium-ion batteries is more and more extensive, from the original mobile phone batteries, digital product batteries to electric bicycles and electric vehicles, UPS, energy storage and other fields, the single battery is getting bigger and bigger, and the combined use is getting more and more More and more, the requirements for the stability of the structure are getting higher and higher. When the batteries are used in combination, it is easier to use the stud structure to connect. The cover plate of the commonly used lithium-ion power battery basically includes a cover plate, a plastic seal, a pole, an insulating sheet, and an explosion-proof device. The pole of the cover plate adopts studs, and the pole also plays the role of fastening ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/06H01M10/0525
CPCY02E60/10
Inventor 王涌寇慕正
Owner TIANJIN ENERGIES
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