PROBLEM TO BE SOLVED: To provide a fuel battery system that can reduce power loss at the initial stage of regeneration.SOLUTION: A fuel battery system includes a high voltage wiring, a fuel battery connected to the high voltage wiring, a drive motor which is connected to the high voltage wiring and capable of performing a regenerative operation, a DC-DC converter connected to the high voltage wiring and the low voltage wiring, a secondary battery connected to the low voltage wiring, a battery sensor for detecting the voltage of the secondary battery, and a controller. When performing the regenerative operation of the drive motor, the controller starts power supply from the fuel battery to the high voltage wiring to charge regenerative power from the drive motor and electric power from the fuel battery into the secondary battery, and thereafter, when the voltage of the secondary battery becomes equal to or higher than a predetermined threshold during the regenerative operation of the drive motor, the controller stops power supply from the fuel battery to the high voltage wiring to charge only the regenerative electric power into the secondary battery.SELECTED DRAWING: Figure 2
【課題】回生初期の電力損失を小さくする。【解決手段】燃料電池システムは、高電圧配線と、前記高電圧配線に接続される燃料電池と、前記高電圧配線に接続され、回生動作が可能な駆動モータと、前記高電圧配線及び低電圧配線に接続されるDC−DCコンバータと、前記低電圧配線に接続される二次電池と、前記二次電池の電圧を検知するバッテリセンサと、制御部と、を備え、前記制御部は、前記駆動モータの回生動作をする場合に、前記燃料電池から前記高電圧配線への給電を開始して、前記駆動モータからの回生電力及び前記燃料電池からの電力を前記二次電池に充電させ、その後、前記駆動モータの回生動作中に前記二次電池の電圧が予め定められた閾値以上となった場合に、前記燃料電池から前記高電圧配線への給電を停止させて前記回生電力のみを二次電池に充電させる。【選択図】図2
FUEL BATTERY SYSTEM
燃料電池システム
2017-06-08
Patent
Electronic Resource
Japanese
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
FUEL BATTERY SYSTEM AND FUEL BATTERY SYSTEM CONTROL METHOD
European Patent Office | 2023
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