公开(公告)号：US20240426148A1

公开(公告)日：2024-12-26

申请号：US18691161

申请日：2022-12-20

Applicant: MINEBEA MITSUMI Inc.

Inventor： Yusuke TAKADA

IPC: E05B81/82 ,  B60R16/033 ,  H02J1/10 ,  H02J9/06

Abstract: A vehicle power supply device includes a backup power supply to which power is supplied from a battery mounted in the vehicle, a boost unit that boosts a voltage of the backup power supply to a predetermined boost voltage, a motor drive unit that is connected to the battery and the boost unit and is capable of driving the electric motor by being supplied with power from one of the battery and the boost unit, a first switching unit that conducts or interrupts power supply between the battery and the motor drive unit, a control unit that controls the first switching unit, and a second switching unit that is provided between the boost unit and the first switching unit and turns off the first switching unit when a voltage output from the boost unit becomes equal to or higher than the predetermined boost voltage

公开(公告)号：US20240383422A1

公开(公告)日：2024-11-21

申请号：US18691144

申请日：2022-12-20

Applicant: MINEBEA MITSUMI Inc.

Inventor： Masakazu NAKATO ,  Yusuke TAKADA

IPC: B60R16/033 ,  E05B81/82

Abstract: A vehicle power supply device includes a backup power supply to which power is supplied from a battery mounted in the vehicle, a boost unit that boosts a voltage of the backup power supply to a boost voltage, a motor drive unit that is connected to the battery and the boost unit and is capable of driving an electric motor by being supplied with power from either the battery or the boost unit, whichever has a higher voltage, and a control unit that controls operation of the boost unit. When it is determined that a predetermined boost condition is satisfied, the control unit controls the boost unit to boost the voltage of the backup power supply to a voltage higher than a rated voltage of the battery.