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太阳能板充电管理控制器

Other Parts Discussed in Thread: BQ24610

请问用太阳能板给带保护板的锂电池包充电,需不需要外加一个充电控制器?

太阳能板的开路电压22V,带载电压17V,功率9W   

锂电池包是三节锂电池串联,自带充放电保护板、

产品要求太阳能板长期与电池包连接,电池包作为智能窗帘机的电源使用