Title:
POWER SUPPLY DEVICE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2021145526
Kind Code:
A
Abstract:
To prevent an electric shock to a human body without using insulation means such as a transformer in a power supply device for a vehicle which is mounted on a vehicle and obtains a low-voltage power supply from a high-voltage power supply via step-down means.SOLUTION: In a configuration in which power is converted from high voltage to low voltage by selectively connecting a predetermined power storage element group to a low voltage electric load from a high voltage power supply formed by connecting power storage elements in series, leakage resistance from a high voltage circuit to the ground is measured during a period when the high voltage circuit is cut off by cutoff means provided between the high voltage power supply and a high voltage electric load, and an electric shock is prevented by cutting off the power supply from the high-voltage power supply to a high-voltage load device when the leakage resistance is equal to or lower than a predetermined value.SELECTED DRAWING: Figure 2
Inventors:
MAKIO DAISUKE
YAMANOUE KOUICHI
YAMANOUE KOUICHI
Application Number:
JP2020044266A
Publication Date:
September 24, 2021
Filing Date:
March 13, 2020
Export Citation:
Assignee:
IMASEN ELECTRIC IND
International Classes:
B60L3/00; B60L58/22; B60R16/033; H02H3/16; H02J7/00
Domestic Patent References:
| JP2018026973A | 2018-02-15 | |||
| JPH11122702A | 1999-04-30 | |||
| JPH11178101A | 1999-07-02 |
Attorney, Agent or Firm:
Akito Tashita