Title:
FLAT-WOUND SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2018049681
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a flat-wound secondary battery, with a high capacity and a high output, which has a simple structure and excellent assemblability.SOLUTION: A secondary battery comprises: a wound electrode group 170, wound around a shaft core 199 via a separator 173 with a positive electrode 174 and a negative electrode 175 interposed therebetween, which has foil exposed portions on both ends in a winding axis direction, and which is provided with a plurality of collector leads 200 on at least one side; a metal plate 198 to which the plurality of collector leads 200 are bonded; a bottomed square-shaped battery can 101 in which one of bent portions of the electrode group 170 is arranged and housed on a can bottom side; a battery lid 102 which closes an upper opening of the battery can; and a positive electrode collector plate 180 and a negative electrode collector plate 190, each fixed to the battery lid 102, which are respectively connected to the positive electrode 174 and the negative electrode 175 in the battery can. The metal plate 198 is bonded and fixed to the shaft core 199 and extends to the collector plate side.SELECTED DRAWING: Figure 8
Inventors:
TAKAHASHI YUKINORI
Application Number:
JP2016182505A
Publication Date:
March 29, 2018
Filing Date:
September 20, 2016
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
H01M2/26; H01M2/02; H01M10/04; H01M10/0587
Attorney, Agent or Firm:
Yuji Toda