Title:
VEHICULAR POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2018182799
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicular power supply device capable of suppressing degradation of a sub-power supply, while realizing redundancy of power supplied to a load part by the sub-power supply.SOLUTION: A vehicular power supply device 1 comprises a main power supply 10, a sub-power supply 40, a switching circuit 50, a redundant circuit 60, and a control part 80. The sub-power supply 40 is connected to a main power supply 10 and a required stable load part 32, and voltage of power supplied to the required stable load part 32 is lower than another voltage of power supplied to the required stable load part 32 from the main power supply 10. The switching circuit 50 provided between the main power supply 10 and the sub-power supply 40 switches on and off electrical connection between the main power supply 10 and the sub-power supply 40. The redundant circuit 60 as a circuit that is different from the switching circuit 50 comprises a diode 61 between the sub-power supply 40 and the required stable load part 32 and supplies power to the required stable load part 32 from the sub-power supply 40 via the diode 61. The control part 80 connected to the switching circuit 50 controls the switching circuit 50.SELECTED DRAWING: Figure 1
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Inventors:
YAMAZAKI YOSHIHIRO
Application Number:
JP2017074445A
Publication Date:
November 15, 2018
Filing Date:
April 04, 2017
Export Citation:
Assignee:
YAZAKI CORP
International Classes:
H02J7/00; B60K6/28; B60L1/00; B60L11/18; B60R16/033; B60R16/04; B60W20/50; H01M2/10; H01M10/44; H01M10/48; H02J1/00
Attorney, Agent or Firm:
Toranomon Intellectual Property Office