Rce鋰鐵電池 vs 台塑鋰鐵電池 - 汽車
By Jessica
at 2016-07-27T21:39
at 2016-07-27T21:39
Table of Contents
我會建議原PO買個高級點的鉛酸電池
再搭配救援電池就好
淘寶上我有看到過 一套4000元不到
別被商人話術唬了
鋰鐵電池目前還有兩大問題無解
每年電池研討會都卡在這上面 (我參加4-5次都無解XD)
管你A123電芯還是什麼的
這是材料特性!!!
念理工科的一定懂 定義是不能問的!!
1. 電量對電壓非線性
隨便舉個例子
鉛酸電池電量對應電壓
電量 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
電壓 9.8 10.1 10.3 10.6 10.9 11.2 11.5 11.8 12 12.2 (V)
鋰鐵電池電量對應電壓
電量 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
電壓 8 10 12.7 12.7 12.8 12.8 12.9 12.9 13.1 13.3 (V)
其實從表中可以很明顯看出
鉛酸電池是非常線性的
你能估測當下電量狀態好壞
鋰鐵呢?
在20-80%電量時 電壓幾乎完全沒改變
等到低於20%以下會瞬間掉下去
如果剛好用那個時候會發生什麼事?
2. 電芯平衡問題
鋰鐵電池 單電芯一律3.3V
不管是哪一家廠商基本上一定都是串聯4組電芯(3.3 X 4 = 13.2 V)
輸出電壓13.2V左右 充滿電會到13.35 V
問題是基本電學大家應該都懂
串聯電流相等 不管充放電都一樣
那如果有一組電芯體質稍弱 突然倒了下去
這樣會造成什麼惡性循環?
綜合以上兩點
可以看到目前沒人敢把鋰鐵電池導入電動車
還是你想三天兩頭被客訴
再來看看已經產品化的Tesla . Gogoro
全都用鋰三元(人家T牌的巨型電池工廠已經全部指定生產P牌的鋰三元了)
別再說自己家電池多屌多強了啦
但用於汽車啟動可以稍微避開
因為啟動之後 都是發電機在做事阿
電瓶只是個輔助角色
賽道測試?
我騎高手125去大鵬灣跑一圈也能說我是賽車選手阿
哪天我抱著電池去義大利法拉利總部拍個照
我還說法拉利認證咧XD
--
All Comments
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at 2016-07-29T18:00
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