LITHIUM SECONDARY CELL ARRAY

摘要

The invention relates to a lithium secondary cell array in a cylindrical design, comprising a winding mandrel and a winding packet, which contains foil-like coated strips and contacting strips that form the electric cell structure consisting of anode, cathode and separator. The cell array further comprises outer electrical connecting means that comprise pole caps. According to the invention, the winding mandrel consists of an insulating material and has a through-channel extending in the longitudinal axis direction. The winding mandrel is connected to an inner pole cap at each end, the pole caps likewise having a respective through-channel. In addition, one outer pole cap having a through-passage is respectively provided, which surrounds the winding packet circumferentially at leat in the edge region, wherein several radially arranged force-fit connecting means, each acting between the outer and the inner pole cap, are used to fix the winding packet and achieve the electrical contacting between the contacting strips and the outer pole cap.

主权项

1. Lithium secondary cell array in a cylindrical design, comprising a winding mandrel and a winding packet, which contains foil-like coated strips and contacting strips that form the electric cell structure of anode, cathode and separator, and with outer electrical connecting means, these comprising pole caps, characterised in that
the winding mandrel the winding mandrel comprises an insulating material and has a through-channel extending in the longitudinal direction, the winding mandrel is connected to an inner pole cap at each end, the pole caps likewise have a through-channel, furthermore each outer pole cap has a through-passage which surrounds the winding packet circumferentially at least in the edge region, whereby several radially arranged force-fit connecting means, each acting between the outer and inner pole cap, fix the winding packet and achieve the electrical contacting between the contacting strips and the outer pole cap.