Lithium secondary battery

Details Lithium secondary battery Lithium secondary battery

H - Electricity

01

M

H01M 10/36 (2006.01) H01M 2/02 (2006.01)

Patent

CA 2444193

Disclosed is a lithium secondary battery comprising a battery case made solely of a single pipe, an internal electrode body contained in the battery case and including a positive electrode, a negative electrode, and a separator made of porous polymer, the positive electrode and the negative electrode being wound or laminated through the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other, and first and second disks, whereby an outer structure comprising the disks and the battery case air-tightly encloses an entirety of a space defined within the outer structure, the internal electrode holy and the electrolyte being within the space, wherein the battery case is composed of pure aluminum or aluminum alloy containing one or more components selected from manganese, magnesium, silicon and copper, and wherein a relationship of 0.004 <= t/d <= 0.04 is established, in which the battery case is cylindrical, d is its outer diameter, and t is its wall thickness.

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