Title:
VEHICULAR POWER SUPPLY CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2020192865
Kind Code:
A
Abstract:
To provide a vehicular power supply control device capable of accurately determining a charge state of a low-voltage battery.SOLUTION: A control device for a power supply includes: a power generator (13) generating electric power; a high-voltage battery (14) accumulating the electric power generated by the power generator; a low-voltage battery (19); a voltage converter (17) for lowering voltage of the high-voltage battery; a current sensor (18) detecting an output current of the voltage converter; and a control unit (10). The voltage converter is configured to lower the output voltage from the high-voltage battery to charge the low-voltage battery and supply electric power to the low-voltage battery and a low-voltage electric load connected to the voltage converter. When an engine mounted to the vehicle is in a stopped state, if an output current detected by the current sensor is lowered to a predetermined first current or smaller, the control unit determines that the low-voltage battery is fully charged.SELECTED DRAWING: Figure 3
Inventors:
KURIHARA TAKESHI
NAKANO YUSUKE
YAMAOKA KEI
TOMII HIDEMASA
SOEDA YUKIHIRO
INAGAKI AKINA
NAKANO YUSUKE
YAMAOKA KEI
TOMII HIDEMASA
SOEDA YUKIHIRO
INAGAKI AKINA
Application Number:
JP2019099049A
Publication Date:
December 03, 2020
Filing Date:
May 28, 2019
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
B60W10/26; B60K6/485; B60K6/54; B60L1/00; B60L50/16; B60L50/60; B60L58/20; B60R16/033; B60W20/13; H02J7/00
Domestic Patent References:
| JP2013165635A | 2013-08-22 | |||
| JP2001298873A | 2001-10-26 | |||
| JP2006304393A | 2006-11-02 | |||
| JP2014131404A | 2014-07-10 |
Attorney, Agent or Firm:
Shinichiro Tanaka
Minoru Nakamura
Fumiaki Otsuka
Yasushi Yamamoto
Makoto Watanabe
Minoru Nakamura
Fumiaki Otsuka
Yasushi Yamamoto
Makoto Watanabe