CHARGING DEVICE

To provide a charging device in which the density of an electrolyte even in a battery installed in a vehicle having an automatic engine stop function can be made uniform, and deterioration of the battery performance can be prevented.SOLUTION: A charging device installed in a vehicle having an automa...

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1. Verfasser: OGAWA HIRONARI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a charging device in which the density of an electrolyte even in a battery installed in a vehicle having an automatic engine stop function can be made uniform, and deterioration of the battery performance can be prevented.SOLUTION: A charging device installed in a vehicle having an automatic engine stop function, includes a low-voltage battery, a high-voltage battery, a voltage conversion unit that performs voltage conversion between the low-voltage battery and the high-voltage battery, and a control unit that controls the voltage conversion unit. The low-voltage battery is configured to be charged with power supplied from the high-voltage battery. In a case where an ignition-off time is equal to or longer than a prescribed time, the control unit controls the power conversion unit to charge the low-voltage battery even after the full charge state of the low-voltage battery is determined.SELECTED DRAWING: Figure 4 【課題】エンジンの自動停止機能を備える車両に搭載されるバッテリであっても、電解液の濃度を均一化することができ、バッテリ性能が低下することを防止することができる充電装置を提供すること。【解決手段】エンジンの自動停止機能を有する車両に搭載される充電装置であって、低電圧バッテリと、高電圧バッテリと、低電圧バッテリと高電圧バッテリとの間で電圧の変換を行う電圧変換部と、電圧変換部を制御する制御部と、を備え、低電圧バッテリは、高電圧バッテリから供給される電力によって充電されるよう構成されており、制御部は、イグニッションオフ時間が所定時間以上である場合、低電圧バッテリが満充電であると判定された後も低電圧バッテリの充電を行うよう、電圧変換部を制御する。【選択図】図4