US 12,278,395 B2
Overcurrent protection element and battery system
Hiroyuki Mihara, Osaka (JP); and Hiroaki Kita, Osaka (JP)
Assigned to SANYO ELECTRIC CO., LTD., Osaka (JP)
Appl. No. 17/439,858
Filed by SANYO Electric Co., Ltd., Osaka (JP)
PCT Filed Dec. 26, 2019, PCT No. PCT/JP2019/051125
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/194967, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-060108 (JP), filed on Mar. 27, 2019.
Prior Publication US 2022/0190451 A1, Jun. 16, 2022
Int. Cl. H01M 50/507 (2021.01); H01M 10/48 (2006.01); H01M 50/227 (2021.01); H01M 50/262 (2021.01); H01M 50/284 (2021.01); H01M 50/50 (2021.01); H01M 50/569 (2021.01); H01M 50/583 (2021.01); H02H 7/18 (2006.01)
CPC H01M 50/507 (2021.01) [H01M 10/48 (2013.01); H01M 50/227 (2021.01); H01M 50/262 (2021.01); H01M 50/284 (2021.01); H01M 50/50 (2021.01); H01M 50/569 (2021.01); H01M 50/583 (2021.01); H02H 7/18 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An overcurrent protection element comprising:
a chip fuse;
a printed circuit board on which the chip fuse is surface mounted;
an external connection part coupled to the printed circuit board; and
an insulating layer provided on the printed circuit board, wherein
the printed circuit board includes:
an insulating substrate; and
a conductive part on a surface of the insulating substrate,
the external connection part is partially placed on and electrically connected to the conductive part of the printed circuit board,
one end of the external connection part extends out of the printed circuit board,
the chip fuse is surface mounted on and electrically connected to the conductive part, and
the chip fuse is electrically connected to the external connection part via the conductive part;
wherein the insulating layer is an insulating plastic molded body coupled to a surface of the printed circuit board;
wherein the insulating plastic molded body includes an opening window that exposes the chip fuse, and the opening window is covered with an insulating material;
wherein the insulating plastic molded body includes a holding portion of the external connection part;
wherein the holder portion of the external connection parts includes holding protrusions protruding toward each other.