18650電池串並聯 - 電池
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By Hamiltion
at 2015-02-17T14:21
at 2015-02-17T14:21
Table of Contents
各位好~小弟我第一次在這邊發文,有些問題想請教一下
18650電池 3.7V 3000mAh 兩並約等於3.7V 6000mAh,22.2Wh
18650電池 3.7V 3000mAh 兩串約等於7.4V 3000mAh,22.2Wh
小弟想問若是並聯1C放電電流最大是6000mAh,那若是串聯1C最大就只能放3000mAh嗎?
因工作上最近接觸到電池產品~我估算產品使用時間都是用Wh在計算
現在假設一下
若我的產品12V_1.5A 18W
電池使用18650兩串 7.4V 3000mAh 22.2Wh
再用BOOST IC 昇壓至12V
22.2Wh/18W*0.7(轉換效率)算起來撐不到1小時(這樣的算法是否有錯誤?)
但實際推算電池電流(似乎已大過我原本電池容量)
18W/7.4V/0.7(轉換效率)電池須提供3.47A左右
若不管產品使用時間,只是純粹讓產品WORK,這樣是否可行?
還是說我必須再並聯電池使容量上升到3.47A以上??
謝謝!!
--
18650電池 3.7V 3000mAh 兩並約等於3.7V 6000mAh,22.2Wh
18650電池 3.7V 3000mAh 兩串約等於7.4V 3000mAh,22.2Wh
小弟想問若是並聯1C放電電流最大是6000mAh,那若是串聯1C最大就只能放3000mAh嗎?
因工作上最近接觸到電池產品~我估算產品使用時間都是用Wh在計算
現在假設一下
若我的產品12V_1.5A 18W
電池使用18650兩串 7.4V 3000mAh 22.2Wh
再用BOOST IC 昇壓至12V
22.2Wh/18W*0.7(轉換效率)算起來撐不到1小時(這樣的算法是否有錯誤?)
但實際推算電池電流(似乎已大過我原本電池容量)
18W/7.4V/0.7(轉換效率)電池須提供3.47A左右
若不管產品使用時間,只是純粹讓產品WORK,這樣是否可行?
還是說我必須再並聯電池使容量上升到3.47A以上??
謝謝!!
--
Tags:
電池
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