公开(公告)号：US20180205239A1

公开(公告)日：2018-07-19

申请号：US15868951

申请日：2018-01-11

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Toshifumi MATSUTAKA ,  Mitsuo NAKAJIMA ,  Hajime HASEGAWA

IPC: H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0016 ,  H02J7/0026 ,  H02J7/0029 ,  H02J7/345 ,  H02J2007/0037

Abstract: A power supply module to be installed on a drive unit in a removable manner includes: a lithium ion capacitor unit that contains at least one lithium ion capacitor cell; a power supply line for supplying power to the drive unit; a first switch unit provided on the power supply line; a protective circuit constituted so that it turns off the first switch based on the voltage of the lithium ion capacitor; and a second switch unit that has at least one switching element, provided between the lithium ion capacitor unit and the protective circuit. The second switch unit is constituted so that it turns on based on a control signal input from the drive unit while the power supply module is installed on the drive unit, and turns off while the control signal is not input. The power supply can suppress leak current from a lithium ion capacitor.