Seal structure for lithium ion cell
A lithium-ion battery and sealing structure technology, which is applied to structural parts, battery cover/end cover, battery pack parts, etc., can solve the problems of poor welding strength and poor air tightness, and achieve protection from damage and good sealing , the effect of ensuring safety
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[0026] The present invention will be further described in detail below with reference to the drawings and specific embodiments.
[0027] Please refer to figure 1 and Figure 5 In this embodiment, a square lithium ion battery is taken as an example. The lithium ion battery sealing structure of the present invention includes a can body 80 and a cover plate 110 sealed and welded to the can body 80. Wherein, a positive terminal 106 is formed in the middle of the cover plate 110, and two sides of the positive terminal 106 are provided with liquid injection holes 112 and an explosion-proof device 102 is sealed and installed.
[0028] The tank 80 has a square shape, and can contain the positive electrode, the negative electrode, the separator and the electrolyte inside the tank 80. The tank 80 has a square opening (not labeled in the figure).
[0029] The cover plate 110 has a size and shape matching the square opening, and can be sealed and covered on the opening by welding. The cover ...
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