DUAL POWER SUPPLY SYSTEM AND ELECTRIC VEHICLE

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DUAL POWER SUPPLY SYSTEM AND ELECTRIC VEHICLE

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IWAMOTO ATSUSHI / IKUI KUNIAKI / SONE TAKASHI / OKUBO KATSUNORI / OTSU ATSUSHI

PROBLEM TO BE SOLVED: To provide a dual power supply system and an electric vehicle, suppressing the deterioration of a sub-battery having higher internal resistance.SOLUTION: A sub-battery 22 performs discharge only, and at acceleration, outputs to a drive motor 25, whereas at deceleration, blocks by a diode D2 if a regenerative current occurs in the drive motor 25, to charge a main battery 21 having lower internal resistance with the entire regenerative current and the output of the sub-battery 22. Therefore, the occurrence of a power loss caused by the repetition of a transient state (charge and discharge) in the sub-battery 22 repeats is prevented, and an increase of resistance caused by the frequent repetition of the start and the stop of the discharge is reduced, so that the temperature rise and the deterioration of the sub-battery 22 can be suppressed (prevented).

【課題】内部抵抗の高い方のサブバッテリの劣化を抑制する２電源システム及び電動車両を提供する。【解決手段】サブバッテリ２２は放電のみを行い、加速時は駆動モータ２５へ出力し、減速時は駆動モータ２５で回生電流が発生してもダイオードＤ２にてブロックし、回生電流及びサブバッテリ２２の出力を全て内部抵抗の低い方のメインバッテリ２１に充電する。このため、サブバッテリ２２が過渡状態（充放電）を繰り返すことによる電力損失の発生が防止され、且つ放電の開始と停止を頻繁に繰り返すことによる抵抗上昇分が低減されるため、サブバッテリ２２の温度上昇及び劣化が抑制（防止）される。【選択図】図３

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Title :

DUAL POWER SUPPLY SYSTEM AND ELECTRIC VEHICLE

Additional title:

２電源システム及び電動車両

Contributors:

IWAMOTO ATSUSHI (author) / IKUI KUNIAKI (author) / SONE TAKASHI (author) / OKUBO KATSUNORI (author) / OTSU ATSUSHI (author)

Publication date :

2015-12-07

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Japanese

Classification :

IPC:

B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung