SOLAR CHARGING SYSTEM

To provide a solar charging system in which an energy conversion efficiency of a DC/DC converter in a process (pumping charging process) for transferring power of a high-voltage battery to an auxiliary battery in a vehicle can be improved.SOLUTION: There is provided a solar charging system mounted on a vehicle, which includes: a power generation module in which a solar panel is used; an auxiliary system including an auxiliary battery in which generated power of the power generation module is stored, and an auxiliary load to which power is supplied from the auxiliary battery; a high-voltage battery used to drive the vehicle; and a control unit provided between the high-voltage battery and the auxiliary system and controlling power transfer between the high-voltage battery and the auxiliary system. When power transfer from the high-voltage battery to the auxiliary system is required, the control unit supplies power of the high-voltage battery to the auxiliary system if generated power of the power generation module is not supplied to the auxiliary system.SELECTED DRAWING: Figure 1 【課題】車両の高圧バッテリの電力を補機バッテリに移送する処理（汲み出し充電処理）におけるＤＣＤＣコンバータのエネルギーの変換効率を向上させるソーラー充電システムを提供する。【解決手段】車両に搭載されたソーラー充電システムであって、ソーラーパネルを用いた発電モジュールと、発電モジュールの発電電力を蓄積する補機バッテリおよび補機バッテリから電力が供給される補機負荷を含む補機系統と、車両の駆動に用いられる高圧バッテリと、高圧バッテリと補機系統との間に設けられ、双方間の電力移送を制御する制御部と、を備える。制御部は、高圧バッテリから補機系統への電力移送が要求された場合、発電モジュールの発電電力が補機系統に供給されていなければ、高圧バッテリの電力を補機系統に供給する。【選択図】図１