To provide a power supply controller for an electric vehicle which, when a timeout occurs before the precharge of a smoothing capacitor is completed, permits the retrial of the precharge if the retrial does not cause any trouble, thereby being able to previously avoid the inability of the vehicle to travel in a case where the timeout occurs due to a transient malfunction.SOLUTION: A permission determination value I0 is set on a low-current side in which a slight margin is allowed with respect to the allowable current of a resistance element 21 in a precharge circuit 9. When a timeout occurs before the precharge of a smoothing capacitor 19 upon staring a vehicle 1 is completed, the retrial of the precharge is permitted if a precharge current Ipre has decreased to a value equal to or less than the permission determination value I0 during the precharge.SELECTED DRAWING: Figure 3
【課題】平滑コンデンサのプリチャージが完了せずにタイムアウトしたときに、プリチャージを再試行しても支障がない場合には再試行を許可することにより、一過性の不具合でタイムアウトした場合の車両の走行不能を未然に回避できる電動車両の電源制御装置を提供する。【解決手段】プリチャージ回路9の抵抗素子21の許容電流に対して若干の余裕分を見込んだ低電流側に許可判定値I0を設定する。車両1を起動する際の平滑コンデンサ19のプリチャージが完了せずにタイムアウトした場合、プリチャージ中にプリチャージ電流Ipreが許可判定値I0以下まで低下したことを条件として、プリチャージの再試行を許可する。【選択図】図3
POWER SUPPLY CONTROLLER FOR ELECTRIC VEHICLE
電動車両の電源制御装置
2019-06-13
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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