US 11,955,600 B2
Solid-state battery
Yusuke Kawabata, Kyoto (JP); Akihiro Fujimoto, Kyoto (JP); and Takumi Otsuka, Kyoto (JP)
Assigned to Maxell, Ltd., Kyoto (JP)
Appl. No. 17/271,907
Filed by MAXELL, LTD., Kyoto (JP)
PCT Filed Aug. 31, 2020, PCT No. PCT/JP2020/032856
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2021/040044, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 2019-156633 (JP), filed on Aug. 29, 2019.
Prior Publication US 2022/0311046 A1, Sep. 29, 2022
Int. Cl. H01M 10/0562 (2010.01); H01M 10/04 (2006.01); H01M 10/0585 (2010.01); H01M 50/109 (2021.01); H01M 50/183 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 10/0562 (2013.01) [H01M 10/0427 (2013.01); H01M 10/0585 (2013.01); H01M 50/109 (2021.01); H01M 50/183 (2021.01); H01M 10/0525 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A solid-state battery comprising:
an exterior can having a can bottom and a cylindrical side wall;
a seal can having a flat portion and a peripheral wall and facing the exterior can; and
a power generation element contained between the exterior can and the seal can and including a cathode material layer, an anode material layer, and a solid electrolyte layer located between the cathode material layer and the anode material layer,
wherein the flat portion and the peripheral wall are contiguous to each other with a curved-surface portion provided therebetween,
a first clearance is defined between an upper edge of an outer peripheral surface of the power generation element, on one hand, and a first border between an inner surface of the flat portion and an inner surface of the curved-surface portion, on the other hand, the first clearance being annular in shape in plan view, and
the first clearance has a radial dimension not larger than 2.0 mm at a position where the first clearance is at its largest.