POWER SUPPLY SYSTEM

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POWER SUPPLY SYSTEM

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NOZAWA TAKASHI

PROBLEM TO BE SOLVED: To provide a technique capable of increasing the power conversion efficiency when supplying electric power from a main power supply line to a sub power supply line.SOLUTION: A power supply system in an embodiment includes; a main power supply line which connects a main battery to an electric power control unit; a sub power supply line which connects a sub battery to an accessory; a first converter 28; a second converter 30; and an ECU (electronic control unit) 60. Each of the converters is capable of supplying the electric power while stepping down the same from the main power supply line to the sub power supply line. One converter (low frequency high efficiency converter) of the first and the second converters has a higher electric power conversion efficiency than that of the other converter (high frequency high efficiency converter) in an area where the output is smaller than a predetermined output threshold.SELECTED DRAWING: Figure 1

【課題】メイン電源配線からサブ電源配線への電力供給時の電力変換効率を高める技術を提供する。【解決手段】本明細書が開示する電源システムは、メインバッテリと電力制御ユニットを接続するメイン電源配線と、サブバッテリと補機を接続しているサブ電源配線と、第１、第２コンバータ２８、３０と、ＥＣＵ６０を備える。両方のコンバータは、共に、メイン電源配線からサブ電源配線へ降圧して電力を供給することができる。第１、第２コンバータのうち一方のコンバータ（低域高効率コンバータ）は、出力が所定の出力閾値よりも小さい領域において、その電力変換効率が他方のコンバータ（高域高効率コンバータ）の電力変換効率よりも高い。【選択図】図１

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Document information

Title :

POWER SUPPLY SYSTEM

Additional title:

電源システム

Contributors:

NOZAWA TAKASHI (author)

Publication date :

2016-11-04

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Japanese

Classification :

IPC:

H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY