To provide a power-supply device having a mode for supplying power to a load using only a main power supply and a mode for supplying power to the load using both the main power supply and an auxiliary power supply, in which power-supply device, when an abnormality occurs in the power-supply device, the load can be supplied with power from the main power supply.SOLUTION: A power-supply device 30 includes: a main power supply 31 and an auxiliary power supply 55 which are capable of supplying power to a load 12; a charging circuit 53 for charging the auxiliary power supply 55 on the basis of the main power supply 31; a switching circuit 54 for switching between a first power supply mode for supplying power to the load 12 using only the main power supply 31 and a second power supply mode for supplying power to the load 12 using both the main power supply 31 and the auxiliary power supply 55; and a bypass circuit 81 electrically connecting the main power supply 31 and the load 12 via a bypass switch 57.SELECTED DRAWING: Figure 2
【課題】主電源のみによって負荷に電力を供給するモードと、主電源および補助電源の両方を用いて負荷に電力を供給するモードとを有する電源装置において、電源装置に異常が発生したときに、主電源から負荷に電力を供給することが可能となる電源装置を提供する。【解決手段】電源装置30は、負荷12に電力を供給することが可能な主電源31および補助電源55と、主電源31に基づいて補助電源35を充電するための充電回路53と、主電源31のみによって負荷12に電力を供給する第1電力供給モードと、主電源31および補助電源55の両方を利用して、負荷12に電力を供給する第2電力供給モードとの間で、電力供給モードを切り替える切替回路54と、主電源31と負荷12とをバイパススイッチ57を介して接続するバイパス回路81とを含む。【選択図】図2
POWER-SUPPLY DEVICE AND POWER-SUPPLY SYSTEM
電源装置および電源システム
2019-08-22
Patent
Electronic Resource
Japanese
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