Title:
POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING ELECTRODE
Document Type and Number:
Japanese Patent JP2020123550
Kind Code:
A
Abstract:
To provide a power storage device and a method for manufacturing an electrode, capable of suppressing fatigue cracks in bent portions of a positive electrode tab and a negative electrode tab due to spring back.SOLUTION: In a plurality of positive electrode tabs 20a and a plurality of negative electrode tabs 21c, root portions 29 provided closer to a tab-side end surface 12a than a base end portion include the root portion 29 that has a bent portion 29a where a plurality of the positive electrode tabs 20a and a plurality of the negative electrode tabs 21c are bent while being gathered together at one end of an electrode assembly 12 in a stacking direction. In the positive electrode tab 20a and the negative electrode tab 21c, at least one surface of the bent portion 29a in a thickness direction is covered with a coating layer 30 comprising a resin containing ceramic particles having a higher Young's modulus than the positive electrode tab 20c and the negative electrode tab 21c.SELECTED DRAWING: Figure 5
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Inventors:
SUKENARI YUJI
KIMURA SHINYA
KINOSHITA KYOICHI
MIYABE YUMIKO
KIMURA SHINYA
KINOSHITA KYOICHI
MIYABE YUMIKO
Application Number:
JP2019016269A
Publication Date:
August 13, 2020
Filing Date:
January 31, 2019
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
H01M2/26; H01G11/12; H01G11/76; H01G11/86; H01M2/34; H01M10/04; H01M10/052; H01M10/0585
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda