Title:
フィルム外装電池の製造方法およびフィルム外装電池
Document Type and Number:
Japanese Patent JP6873798
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress cracking and opening on current collectors 14, 15 upon ultrasound joint of the current collectors 14, 15 made of metallic foil with electrode tubs 3, 4 and to avoid problems, such as burr, due from a conventional protect metal plate.SOLUTION: Current collectors 14, 15 comprising a large number of positive electrodes and negative electrodes are respectively laminated on electrode tubs 3, 4 and jointed by ultrasound in thickness direction of the electrode tubs 3, 4 together with a heat resistance fiber reinforcement resin sheet 5. The sheet 5 is that whose fiber layer where glass fiber is woven in flat to form a grid shape is coated with PTFE and whose surface is uneven due to the fiber. Thereby, cracking and opening due to ultrasound energy on the current collectors 14, 15 are suppressed. The sheet 5 is flexible rather than the metal plate, thus no damage is provided on an inside layer of a laminate film 6 to be an outer body 2.SELECTED DRAWING: Figure 2
Inventors:
Yui Doi
Kim Taiyuan
Kim Taiyuan
Application Number:
JP2017078588A
Publication Date:
May 19, 2021
Filing Date:
April 12, 2017
Export Citation:
Assignee:
Envision aesc Japan
International Classes:
B23K20/10; H01M50/531
Domestic Patent References:
| JP2008243760A |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tomioka Kiyoshi