公开(公告)号：US12115945B2

公开(公告)日：2024-10-15

申请号：US18074581

申请日：2022-12-05

Applicant: DENSO ELECTRONICS CORPORATION

Inventor： Taiga Ishikawa

IPC: B60S1/08

CPC classification number: B60S1/0807

Abstract: A wiper drive device includes: a wiring connected to a wiper motor; a drive element configured to apply a voltage to the wiper motor through the wiring by being turned on so as to rotate the wiper motor; a braking element configured to brake the wiper motor by being turned on when the drive element is turned off so as to flow a current corresponding to a rotational energy of the wiper motor; and a determination unit configured to determine that the braking element is abnormal when a time period from when the wiper motor is braked to when an electric potential of the wiring becomes equal to or less than a predetermined threshold potential is longer than a predetermined value which is the time period in case where the braking element is normal.