ELECTRIC POWER SUPPLY

• Main Authors: ISHIGAKI TAKUYA, SATO FUMIHIRO, OUCHI TAKAYUKI, SHOJI HIROYUKI, SHIMADA TAKAE, TAKAHASHI NAOYA, KISHIMOTO EIGO
• Format: Patent
• Language: English; Japanese
• Published: 22.12.2016
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To provide an efficient charger for charging a battery by inputting an AC voltage.SOLUTION: A charger 1a, for charging a DC battery 5, includes a step-down converter part, to which a DC voltage from a power source 10 is input, for converting the DC voltage. When a voltage of the DC battery is between a predetermined first voltage smaller than a charge completion voltage of the DC battery 5 and the charge completion voltage, a variable voltage that increases from the first voltage to the charge completion voltage along with charging of the DC battery is input to the step-down converter part.SELECTED DRAWING: Figure 1 【課題】交流電圧を入力してバッテリを充電する効率が高い充電装置を提供する。【解決手段】直流バッテリ５を充電する充電装置１ａであって、電源１０からの直流電圧が入力され、当該直流電圧を変換する降圧コンバータ部を備え、直流バッテリの電圧が直流バッテリ５の充電完了電圧よりも小さい所定の第１電圧から充電完了電圧までの間であるときは、降圧コンバータ部には、直流バッテリの充電に従って第１電圧から充電完了電圧まで増加する可変電圧が入力される。【選択図】図１