US 12,247,938 B2
Inspection device and manufacturing method of film-type battery
Satoshi Nakashima, Toyota (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed by Prime Planet Energy & Solutions, Inc., Tokyo (JP)
Filed on Dec. 24, 2021, as Appl. No. 17/561,878.
Claims priority of application No. 2020-218814 (JP), filed on Dec. 28, 2020.
Prior Publication US 2022/0205939 A1, Jun. 30, 2022
Int. Cl. G01N 25/72 (2006.01); G01B 11/06 (2006.01); G01K 1/12 (2006.01); H01M 10/04 (2006.01); H01M 50/183 (2021.01)
CPC G01N 25/72 (2013.01) [G01B 11/06 (2013.01); H01M 10/0436 (2013.01); G01K 1/12 (2013.01); H01M 50/183 (2021.01)] 5 Claims
OG exemplary drawing
 
1. An inspection device for a film-type battery including an electrode body, and a film exterior body for accommodating the electrode body in an inside thereof, and including a heat seal part at a periphery thereof,
the inspection device, comprising:
a temperature measuring device for measuring a temperature distribution of the heat seal part; and
a first determination part for controlling the temperature measuring device in a prescribed time after formation of the heat seal part at the film exterior body, and determining presence or absence of a poorly sealed site based on the temperature distribution measured, wherein:
the first determination part is configured so as to acquire the temperature distribution after an elapse of a first time, and the temperature distribution after an elapse of a second time longer than the first time in the prescribed time, and to calculate a temperature change amount per unit time, thereby determining the presence or absence of the poorly sealed site based on the temperature change amount.