Title:
POWER SUPPLY DEVICE AND SWITCH DIAGNOSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228508
Kind Code:
A1
Abstract:
This power supply device is configured to be connected between a first DC power supply and a second DC power supply. The power supply device comprises: a first switch configured such that one end thereof is connected to the first DC power supply; a DC-DC converter having a first capacitor connected to the other end of the first switch; and a control unit configured to control the DC-DC converter and the first switch, and to detect a potential difference between the one end and the other end of the first switch. The DC-DC converter is configured to perform: a first action to convert a voltage stored by the first capacitor to a second voltage and output the converted second voltage to the second DC power supply; and/or a second action to convert the second voltage supplied and held by the second DC power supply to a third voltage and output the converted third voltage to the first capacitor. The control unit is configured to: detect a potential difference after issuing an instruction to shut off the first switch and causing the DC-DC converter to perform the first action or the second action; and determine that, when the detected potential difference is greater than a reference potential difference, the first switch is normal.
Inventors:
TAKEMOTO KENSUKE
YOSHIDA KOJI
NAKAYASHIKI TAKESHI
YOSHIDA KOJI
NAKAYASHIKI TAKESHI
Application Number:
PCT/JP2023/008224
Publication Date:
November 30, 2023
Filing Date:
March 06, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02J7/00; H02H3/05; H02M3/155; H02M3/28
Domestic Patent References:
| WO2019077958A1 | 2019-04-25 |
Foreign References:
| JP2007252082A | 2007-09-27 | |||
| JP2015008600A | 2015-01-15 | |||
| JP2018182864A | 2018-11-15 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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