公开(公告)号：US20250147075A1

公开(公告)日：2025-05-08

申请号：US19014378

申请日：2025-01-09

Applicant: Alps Alpine Co., Ltd.

Inventor： Manabu TAMURA ,  Keisuke NAKAYAMA ,  Hideaki TAKANO ,  Takashi KAWAHATA

IPC: G01R15/20 ,  G01R19/00

Abstract: A current sensor which suppresses deterioration of detection accuracy caused by high temperature of electronic components due to heat of a bus bar and is suitable for measurement of large current includes a bus bar through which a current to be measured flows, a magnetic detector detecting a magnetic field generated by the bus bar, and a case integrally formed with the bus bar and having a storage space storing the magnetic detector. The magnetic detector is spaced away from and faces the bus bar. The bus bar is on a first surface of the storage space defining the storage space and facing the magnetic detector. A low thermal conductivity material having a lower thermal conductivity than a resin-based material forming the case is provided between the bus bar and the magnetic detector to contact an opposing surface, on the bus bar, facing the magnetic detector.