PROBLEM TO BE SOLVED: To provide an electric circuit for continuously supply power to electrical equipment loads in a vehicle having two batteries even if there is a terminal disconnection on one battery when automatic restart is initiated from an idling-stop.SOLUTION: A vehicular electric circuit includes: first and second batteries mutually connected in parallel; a second electrical-equipment load set that is at least a part of all electrical equipment loads of a vehicle and is connected to a second battery; a first electrical-equipment load set that is an electrical-equipment load set other than the second electrical-equipment load set and is connected to a first battery; a circuit breaker capable of connecting and shutting an electrical connection between the first battery and the second electrical-equipment load set. The circuit breaker includes: first switch means disposed so that a forward direction of a parasitic diode is oriented from the first battery to the second electrical-equipment load set; and second switch means disposed serially to the first switch means. Further, when an engine is automatically restarted, the first switch means is put to a shut state, while the second switch means is put to a connected state.
【課題】2つのバッテリを備える車両において、アイドリングストップからの自動再始動時に、仮に一方のバッテリで端子外れが生じても、電装負荷への電力供給が途絶えない電気回路を提供する。【解決手段】車両用電気回路は、互いに並列接続される第1バッテリ及び第2バッテリと、車両の全電装負荷の少なくとも一部であって第2バッテリに接続される第2電装負荷群と、第2電装負荷群を除く電装負荷群であって第1バッテリに接続される第1電装負荷群と、第1バッテリと第2電装負荷群との電気的な接続を断続切り替え可能な電源遮断器と、を含んで構成される。電源遮断器は、寄生ダイオードの順方向が第1バッテリから第2電装負荷群へ向くよう配置される第1スイッチ手段と、第1スイッチ手段に直列に配置される第2スイッチ手段と、を含み、エンジンの自動再始動時には、第1スイッチ手段は遮断状態に、第2スイッチ手段は導通状態になる。【選択図】図1
VEHICULAR ELECTRIC CIRCUIT
車両用電気回路
12.01.2016
Patent
Elektronische Ressource
Japanisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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