US 11,658,343 B2
Battery manufacturing method
Kazuyuki Yoda, Kanagawa (JP); Tomohiro Kaburagi, Kanagawa (JP); Eiji Minegishi, Kanagawa (JP); Koh Hatanaka, Kyoto (JP); Takuya Sakurai, Kyoto (JP); Masanori Shimada, Kyoto (JP); Yusuke Emori, Kyoto (JP); and Yuichiro Yokoyama, Kyoto (JP)
Assigned to Nissan Motor Co., Ltd., Yokohama (JP)
Appl. No. 16/978,256
Filed by Nissan Motor Co., Ltd., Yokohama (JP)
PCT Filed Mar. 20, 2019, PCT No. PCT/JP2019/011840
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2019/198453, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. JP2018-074687 (JP), filed on Apr. 9, 2018.
Prior Publication US 2021/0005934 A1, Jan. 7, 2021
Int. Cl. H01M 10/0585 (2010.01); H01M 10/613 (2014.01); H01M 50/46 (2021.01); H01M 4/04 (2006.01); H01M 4/66 (2006.01); H01M 10/04 (2006.01)
CPC H01M 10/0585 (2013.01) [H01M 4/0471 (2013.01); H01M 4/668 (2013.01); H01M 10/04 (2013.01); H01M 10/613 (2015.04); H01M 50/46 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A battery manufacturing method comprising:
forming a unit cell that comprises stacking a positive electrode that is obtained by a positive electrode active material layer containing a first electrolytic solution being disposed on a positive electrode current collector, a negative electrode that is obtained by a negative electrode active material layer containing a second electrolytic solution being disposed on a negative electrode current collector, and a separator interposed between the positive electrode and the negative electrode, and disposing a seal part disposed on an outer peripheral portion of the unit cell;
heat sealing the seal part disposed at the outer peripheral portion of the unit cell; and
cooling the outer peripheral portion of the unit cell by using a cooling medium, the cooling of the outer peripheral portion of the unit cell being carried out after the heat sealing of the seal part,
the battery manufacturing method being carried out such that the positive electrode and the negative electrode are formed without an application film being subjected to a drying process performed through heating, and
the battery manufacturing method being carried out such that no electrolytic solution is injected into the unit cell after formation of the unit cell,
the cooling being performed by placing a cooling member in contact with the outer peripheral portion of the unit cell in an evacuated state, the cooling member being formed of a metal material.