Title:
POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2022187621
Kind Code:
A
Abstract:
To provide a power supply device in which an abnormal-time treatment can be executed when a ground line of at least one system has an abnormality.SOLUTION: Power supply circuits 201, 202 of multiple systems are disposed between a power source 150 and a load 80, and are capable of cooperatively supplying power to the load 80 by using power of the power source 150. Ground lines Lg1, Lg2 connected to a negative electrode of the power source 150 are formed independently in the respective systems. Multiple ground current detectors 261, 262 detect ground currents Ig1, Ig2 which are currents flowing through the ground lines Lg1, Lg2 of the respective systems. Control units 401, 402 have ground line diagnosis units 451, 452 that diagnose abnormalities in the ground lines Lg1, Lg2 on the basis of the ground currents Ig1, Ig2. When an abnormality in a ground line of at least one system is determined by the ground line diagnosis units 451, 452, the control units 401, 402 change the operation of the power supply circuit of the system that has been determined to have the abnormality.SELECTED DRAWING: Figure 2
Inventors:
KAWASAKI HIROKAZU
KABUNE HIDEKI
KABUNE HIDEKI
Application Number:
JP2021095704A
Publication Date:
December 20, 2022
Filing Date:
June 08, 2021
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02M7/48; H02P29/024
Attorney, Agent or Firm:
Patent Attorney Corporation Hattori International Patent Office