Title:
BATTERY PACK
Document Type and Number:
Japanese Patent JP2020161391
Kind Code:
A
Abstract:
To provide a battery pack capable of exhibiting high level battery performance stably, by preventing deviation of surface pressure applied to a cell group during confinement.SOLUTION: A battery pack includes a cell group A where multiple single cells 10 are arranged, and a binding member for binding the cell group. The single cell 10 of this battery pack is an all-solid battery including a lamination type electrode body 14 laminating sheet materials consisting of a positive electrode, a negative electrode and a solid electrolyte layer, and an exterior coating body 11 for housing the lamination type electrode body. The cell group A of a battery pack disclosed here is configured so that the ratio (K1/K2) of the max K1 of spring constant to the minimum K2 of spring constant in the arrangement direction X becomes 1-3. With such an arrangement, deviation of surface pressure applied to the cell group A during confinement is prevented, and a high level battery performance can be exhibited.SELECTED DRAWING: Figure 5
Inventors:
KAGAMI RYO
Application Number:
JP2019061142A
Publication Date:
October 01, 2020
Filing Date:
March 27, 2019
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M10/052; H01M10/0562; H01M10/058; H01M50/211; H01M50/291
Domestic Patent References:
| JP2018181465A | 2018-11-15 | |||
| JP2017098107A | 2017-06-01 | |||
| JP2015138753A | 2015-07-30 | |||
| JP2003257391A | 2003-09-12 | |||
| JP2011154902A | 2011-08-11 | |||
| JP2019106336A | 2019-06-27 |
Foreign References:
| WO2012111077A1 | 2012-08-23 |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane
Michiko Oi
Hiroaki Yamane