US 12,191,777 B2
Power conversion device
Takayuki Shirai, Shioya-gun (JP); Takuya Yagi, Oyama (JP); and Shinichiro Hayakawa, Utsunomiya (JP)
Assigned to HITACHI ASTEMO, LTD., Hitachinaka (JP)
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
Filed on May 20, 2022, as Appl. No. 17/749,798.
Claims priority of application No. 2021-090824 (JP), filed on May 31, 2021.
Prior Publication US 2022/0385202 A1, Dec. 1, 2022
Int. Cl. H02M 7/00 (2006.01); G01R 33/07 (2006.01); H02M 7/48 (2007.01); H05K 7/14 (2006.01)
CPC H02M 7/003 (2013.01) [G01R 33/07 (2013.01); H02M 7/48 (2013.01); H05K 7/1432 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A power conversion device comprising:
a magnetic core which has a gap formed by cutting out a part of an annular shape;
a resin primary molded body configured to hold the magnetic core by covering a first end portion and a second end portion of the magnetic core that are arranged opposite to each other with the gap therebetween from outside of the magnetic core in a radial direction; and
a resin secondary molded body which has an exposed portion in which a surface of a portion of the primary molded body that covers the first end portion and the second end portion is exposed, and contains the primary molded body,
wherein the primary molded body has a groove portion in which a first end surface exposed to the gap of the first end portion and a second end surface exposed to the gap of the second end portion are exposed, and
wherein the secondary molded body has a fitting wall portion from an inner wall surface on the first end surface side of the groove portion to an inner wall surface on the second end surface side with the first end surface and the second end surface exposed.