Title:
CONTROL DEVICE OF POWER SUPPLY CIRCUIT
Document Type and Number:
Japanese Patent JP2021131963
Kind Code:
A
Abstract:
To provide a control device of a power supply circuit capable of determining deterioration of a relay.SOLUTION: A power supply circuit 200 includes a first battery 10, a relay 20, a second battery 12, and a second converter 30 that boosts the power of the second battery 12 and supplies the power to a load 300. When a control device 100 starts supplying power to the load 300, the control device executes sequence processing of executing boost drive of the second converter 30 until the voltage of the power supplied to the load 300 reaches a specified initial voltage lower than the voltage of the first battery 10, and then energizing the relay 20, processing of measuring an elapsed time from energizing of the relay 20 by executing the sequence processing to timing when the voltage of the electric power supplied to the load 300 changes from the initial voltage to the voltage of the first battery 10, and processing of determining that the relay 20 deteriorates when a determination condition including a condition in which the elapsed time is equal to or longer than a specified determination value is satisfied.SELECTED DRAWING: Figure 1
Inventors:
NISHIDA NAOHITO
Application Number:
JP2020026091A
Publication Date:
September 09, 2021
Filing Date:
February 19, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01H47/00; B60R16/02; H02J7/00
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda