Patent ID: 11945384
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  F | IPC B  F  H

Claim 16:
17. The power supply backup method according to claim 14, wherein said causing the backup power supply system to supply electric power to the load while failure of the main power supply occurs comprises:
while failure of the main power supply occurs, causing the first auxiliary power supply to supply electric power to the load after the first duration elapses since the first auxiliary power supply starts to be charged; and
while failure of the main power supply occurs, causing the second auxiliary power supply to supply electric power to the load after the second duration elapses since the second auxiliary power supply starts to be charged and while the first duration does not elapse since the first auxiliary power supply starts to be charged.