US 12,278,398 B2
Sealed battery and method of manufacturing sealed battery
Takahiro Sakurai, Nagoya (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed by Prime Planet Energy & Solutions, Inc., Tokyo (JP)
Filed on Dec. 7, 2021, as Appl. No. 17/544,874.
Claims priority of application No. 2020-205527 (JP), filed on Dec. 11, 2020.
Prior Publication US 2022/0190448 A1, Jun. 16, 2022
Int. Cl. H01M 50/553 (2021.01); H01M 50/176 (2021.01); H01M 50/188 (2021.01); H01M 50/55 (2021.01)
CPC H01M 50/553 (2021.01) [H01M 50/176 (2021.01); H01M 50/188 (2021.01); H01M 50/55 (2021.01)] 11 Claims
OG exemplary drawing
 
1. A sealed battery comprising: a case which houses an electrode body; and an electrode terminal for electrically connecting the electrode body and an external conductive material with each other, wherein
the electrode terminal includes:
a first member which is a conductive member to be connected to the electrode body inside the case and which has a connecting portion that is exposed to outside of the case; and
a second member which is a plate-shaped conductive member arranged outside of the case, which has a connection region to be connected to the external conductive material, and which connected to the connecting portion of the first member,
an upper end of the connecting portion of the first member penetrates the case and the second member and forms a cap portion having a flat plate shape outside of the second member, and
a plurality of recessed portions are formed on an upper surface of the cap portion, and a bonding portion configured due to an ultrasonic joining is formed on a boundary, which is between the first member and the second member, below each of the plurality of recessed portions.