VEHICLE POWER UNIT
VEHICLE POWER UNIT
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To provide a vehicle power unit capable of protecting a component of a vehicle power unit, and reducing cost of the vehicle power unit.SOLUTION: A vehicle power unit comprises: a high voltage battery 31 connected to a travel motor 13 through an inverter 40; a contactor 32 provided between the inverter 40 and the high voltage battery 31, and being controlled between an on state and an off state; a first capacitor C1 provided between the contactor 32 and the inverter 40, and connected to the inverter 40 in parallel; a discharge circuit part 41 comprising a discharge resistance R1 and first switch SW1 connected to the discharge resistance in series, and being connected to the first capacitor C1 in parallel; a capacitor circuit part 42 comprising a second capacitor C2 and a second switch SW2 connected to the second capacitor in series, and being connected to the first capacitor C1 in parallel; and a switch control part for controlling the first switch SW1 and the second switch SW2. The switch control part controls the first switch SW1 to the on state, and controls the second switch SW2 to the on state when the contactor 32 is controlled from the on state to the off state in regenerative power generation of the travel motor 13.SELECTED DRAWING: Figure 6
【課題】車両用電源装置の構成部品を保護しつつ、車両用電源装置のコストを低減する。【解決手段】走行用モータ１３にインバータ４０を介して接続される高電圧バッテリ３１と、インバータ４０と高電圧バッテリ３１との間に設けられ、オン状態とオフ状態とに制御されるコンタクタ３２と、コンタクタ３２とインバータ４０との間に設けられ、インバータ４０に並列接続される第１コンデンサＣ１と、放電抵抗Ｒ１とこれに直列接続される第１スイッチＳＷ１とを備え、第１コンデンサＣ１に並列接続される放電回路部４１と、第２コンデンサＣ２とこれに直列接続される第２スイッチＳＷ２とを備え、第１コンデンサＣ１に並列接続されるコンデンサ回路部４２と、第１スイッチＳＷ１および第２スイッチＳＷ２を制御するスイッチ制御部と、を有し、スイッチ制御部は、走行用モータ１３の回生発電中にコンタクタ３２がオン状態からオフ状態に制御される場合に、第１スイッチＳＷ１をオン状態に制御し、第２スイッチＳＷ２をオン状態に制御する。【選択図】図６
Document information
VEHICLE POWER UNIT
車両用電源装置
2019-10-10
Patent
Electronic Resource
Japanese
| IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |