Title:
BACKUP POWER SUPPLY DEVICE AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/075351
Kind Code:
A1
Abstract:
This backup power supply device (30) comprises a first switch (21), a second switch (22), a third switch (23), a fourth switch (24), an auxiliary power supply (25), and a control circuit (31). The first switch (21) has a first diode (21b) provided in a direction that allows current supplied from a main power supply (10) to flow to the second switch (22) when the first switch (21) is off. When switching the power supply that supplies DC voltage to a load (12) from the main power supply (10) to the auxiliary power supply (25), the control circuit (31) executes a first step (S30) that turns off the first switch (21), and after the first step (30), a second step (S31) that turns on the third switch (23) and the fourth switch (24), and after the second step (S31), a third step (S32) that turns off the second switch (22).
Inventors:
ATAGO KATSUNORI
KAGEYAMA YOUICHI
TAKENAKA KAZUO
HAYASHI KOICHIRO
SUZUKI TAKUMI
NISHINAKA HIROKI
KAGEYAMA YOUICHI
TAKENAKA KAZUO
HAYASHI KOICHIRO
SUZUKI TAKUMI
NISHINAKA HIROKI
Application Number:
PCT/JP2023/024348
Publication Date:
April 11, 2024
Filing Date:
June 30, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02J9/06; H02J1/00; H02J7/34
Foreign References:
| JP2017216795A | 2017-12-07 | |||
| JP2012135206A | 2012-07-12 | |||
| JP2003079069A | 2003-03-14 | |||
| JP2001197682A | 2001-07-19 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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