POWER SUPPLY APPARATUS, CONTROL METHOD OF THE SAME, POWER SUPPLY SYSTEM, AND COMMUNICATION BASE STATION BACKUP SYSTEM

• Main Authors: GAMA SHINTARO, HIGUCHI MASAMI
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To improve stability and durability of a power supply system.SOLUTION: The power supply system includes a first power supply device and a second power supply device that supply power from a power supply to a load. The second power supply device has a second storage battery and is connected to the first power supply device. The first power supply device includes: a switching unit having an output terminal electrically connectable to a first switch and the load; and a power storage device having a first storage battery, a control unit, a second switch, and an external input terminal. The second switch has at least one of an off function that turns off the second switch when at least one of a control signal from the control unit and an external input signal supplied from the outside to the external input terminal is a signal for turning off the second switch and an on function that turns on the second switch when both the control signal and the external input signal are signals for turning on the second switch. When a power failure of the power source is detected, the first switch is closed to electrically connect the first storage battery and the output terminal.SELECTED DRAWING: Figure 4 【課題】電力供給システムの安定性と耐久性を向上する。【解決手段】電力供給システムは、電源からの電力を負荷に供給する第一電力供給装置及び第二電力供給装置を備える。第二電力供給装置は、第二蓄電池を有するとともに第一電力供給装置と接続されている。第一電力供給装置は、第一スイッチ及び負荷に電気的に接続可能な出力端子を有するスイッチングユニットと、第一蓄電池、制御部、第二スイッチ及び外部入力端子を有する蓄電装置とを備える。第二スイッチは、制御部からの制御信号及び外部から外部入力端子に供給される外部入力信号の少なくとも一方が当該第二スイッチをオフとする信号の場合にオフとなるオフ機能及び制御信号及び外部入力信号のいずれも当該第二スイッチをオンとする信号の場合にオンとなるオン機能、の少なくとも一方を有する。電源の停電が検知された場合には、第一スイッチが閉じて第一蓄電池と出力端子とを電気的に導通させる。【選択図】図４