[心得] 小米20000mAh行動電源YDDYP01簡介及測試
狼窩好讀版:http://wolflsi.pixnet.net/blog/post/62705207
產品特點:
1.20000mAh(72Wh)大容量鋰電池
2.TI MAXCharge快充定義,可支援QC 2.0充電器以9V/12V進行充電
3.TI、SILERGY雙轉換電路,雙5V USB大輸出,單埠最大2.1A,雙埠總和最大3.6A
4.白色亮面外殼,正反面防滑處理
外盒維持一貫純白色設計,底部有小米mi字樣商標
http://farm2.static.flickr.com/1659/24563524964_30009fb801_o.jpg
![](http://farm2.static.flickr.com/1659/24563524964_30009fb801_o.jpg)
外盒側面印上產品詳細規格,產品型號為YDDYP01,電池容量20000mAh(72Wh),額定容量
12700mAh(1A輸出下),支援5V/2A、9V/2A、12V/1.5A三種充電輸入,輸出單埠最大
5.1V/2.1A,雙埠總和最大3.6A
http://farm2.static.flickr.com/1471/24826501009_01971ef025_o.jpg
![](http://farm2.static.flickr.com/1471/24826501009_01971ef025_o.jpg)
產品條碼處同樣有貼上防偽驗證貼紙,刮開銀漆後可上網查詢真偽
http://farm2.static.flickr.com/1689/25167858046_5c92518bc5_o.jpg
![](http://farm2.static.flickr.com/1689/25167858046_5c92518bc5_o.jpg)
包裝內容物有行動電源本體、說明書、Micro USB充電傳輸短線
http://farm2.static.flickr.com/1541/24826500219_5cf2fa615d_o.jpg
![](http://farm2.static.flickr.com/1541/24826500219_5cf2fa615d_o.jpg)
此款小米20000採用白色亮面塑膠外殼,正面下方嵌入銀色的小米商標
http://farm2.static.flickr.com/1656/24567369413_954ef04187_o.jpg
![](http://farm2.static.flickr.com/1656/24567369413_954ef04187_o.jpg)
外殼的正面與背面都有凸點狀防滑處理
http://farm2.static.flickr.com/1476/25194201305_065573b5c5_o.jpg
![](http://farm2.static.flickr.com/1476/25194201305_065573b5c5_o.jpg)
側面部分維持原本白色亮面塑膠,無防滑凸點處理
http://farm2.static.flickr.com/1709/25100947261_4a7bdcd27b_o.jpg
![](http://farm2.static.flickr.com/1709/25100947261_4a7bdcd27b_o.jpg)
開關設置在側面,略為凹陷的設計可避免誤觸
http://farm2.static.flickr.com/1493/24898562540_e1f137f3b9_o.jpg
![](http://farm2.static.flickr.com/1493/24898562540_e1f137f3b9_o.jpg)
行動電源底部也採略為凹陷的設計,可以讓底部印上的產品詳細規格資訊不會受到磨損,
此顆為LG電池版
http://farm2.static.flickr.com/1443/24567369313_fe11c1a4af_o.jpg
![](http://farm2.static.flickr.com/1443/24567369313_fe11c1a4af_o.jpg)
![](http://farm2.static.flickr.com/1701/25075927012_5463787df0_o.jpg)
頂部同樣也是採略為凹陷的設計,兩組輸出埠分布左右邊,中央為Micro USB充電輸入及
四顆電量指示燈
http://farm2.static.flickr.com/1624/25075928022_f74c6b79f1_o.jpg
![](http://farm2.static.flickr.com/1624/25075928022_f74c6b79f1_o.jpg)
電量指示燈為白光,一開始會全部點亮,然後依照內部電量點亮對應的LED數目
http://farm2.static.flickr.com/1662/25167858756_8a5fea2b3e_o.jpg
![](http://farm2.static.flickr.com/1662/25167858756_8a5fea2b3e_o.jpg)
![](http://farm2.static.flickr.com/1571/25167858686_1e7717ccd3_o.jpg)
![](http://farm2.static.flickr.com/1494/24567368273_9849f3a546_o.jpg)
![](http://farm2.static.flickr.com/1523/24567369203_e95630f1a5_o.jpg)
![](http://farm2.static.flickr.com/1720/24567369163_c235da7b8f_o.jpg)
當插上裝置或按下開關後,行動電源會啟動輸出,若沒有插上負載或是負載電流過低,20
秒後會自動關閉輸出
因為兩埠採用獨立轉換電路,所以輸出電壓會略有差異,上面是TI電路輸出,下面是
SILERGY電路輸出
http://farm2.static.flickr.com/1557/24898563100_be80be9baa_o.jpg
![](http://farm2.static.flickr.com/1557/24898563100_be80be9baa_o.jpg)
TI電路輸出對Apple裝置進行充電,可達到原廠充電器水準
http://farm2.static.flickr.com/1671/25100947071_5841709c79_o.jpg
![](http://farm2.static.flickr.com/1671/25100947071_5841709c79_o.jpg)
TI電路輸出對Android裝置進行充電,可達到原廠充電器水準
http://farm2.static.flickr.com/1674/25194202075_e563f74b14_o.jpg
![](http://farm2.static.flickr.com/1674/25194202075_e563f74b14_o.jpg)
SILERGY電路輸出對Apple裝置進行充電,可達到原廠充電器水準
http://farm2.static.flickr.com/1495/25194202035_95f9f343f3_o.jpg
![](http://farm2.static.flickr.com/1495/25194202035_95f9f343f3_o.jpg)
SILERGY電路輸出對Android裝置進行充電,可達到原廠充電器水準
http://farm2.static.flickr.com/1565/24563524564_d7bd9ec66e_o.jpg
![](http://farm2.static.flickr.com/1565/24563524564_d7bd9ec66e_o.jpg)
行動電源充電時會以使用的充電器可支援的最大充電電壓進行充電,使用輸出足夠的QC
2.0充電器時,可採用9V/12V進行充電,若是輸出不足,會降至5V充電或是呈現無法充電
的情形,建議搭配輸出至少9V/2A或是12V/1.5A的QC 2.0充電器以達到最佳充電效果
http://farm2.static.flickr.com/1643/25194201885_61721c7238_o.jpg
![](http://farm2.static.flickr.com/1643/25194201885_61721c7238_o.jpg)
小米20000可以邊充邊用,但是當插上負載時充電輸入電壓會自動限制在5V,無法使用
9V/12V進行快充
邊充邊用下,TI電路輸出埠產生明顯壓降,SILERGY電路則不受影響
http://farm2.static.flickr.com/1553/25194201855_0b6ebe11a2_o.jpg
![](http://farm2.static.flickr.com/1553/25194201855_0b6ebe11a2_o.jpg)
在有一定電流輸出下邊充邊用,TI電路輸出的壓降比起SILERGY電路更為明顯
http://farm2.static.flickr.com/1681/24826500569_d6a1ea00c1_o.jpg
![](http://farm2.static.flickr.com/1681/24826500569_d6a1ea00c1_o.jpg)
以12V進行充電時,最高充電電流會達到1.7A,且充電時的電流會一直上下變動,如下圖
綠色曲線,連帶也影響充電器輸入的電壓(紅色曲線),這種充電特性是小米行動電源推出
以來一直存在的
若是使用12V充電,從用完到充飽的時間約在5個小時左右
http://farm2.static.flickr.com/1665/24826500479_ebfb9b7801_o.jpg
![](http://farm2.static.flickr.com/1665/24826500479_ebfb9b7801_o.jpg)
使用5V進行充電時,從綠色曲線可以看到充電電流也是一直呈現上下變動的狀況,最高充
電電流會達到2.2A
使用5V充電,則完全充電時間會增加到8個小時
http://farm2.static.flickr.com/1473/24826499909_cd1ee5f746_o.jpg
![](http://farm2.static.flickr.com/1473/24826499909_cd1ee5f746_o.jpg)
TI電路輸出埠0.5A至2A的可用mAh及Wh數據,0.5A/1A輸出有88%的可用Wh比例,1.5A為84%
,2A為81%
1A輸出的12520mAh比標示的額定電容量12700mAh稍低一些
http://farm2.static.flickr.com/1507/24898562250_d29a228ded_o.jpg
![](http://farm2.static.flickr.com/1507/24898562250_d29a228ded_o.jpg)
0.5A至2A的放電電壓與放電時間圖表
http://farm2.static.flickr.com/1538/25100946261_6d539661ac_o.jpg
![](http://farm2.static.flickr.com/1538/25100946261_6d539661ac_o.jpg)
SILERGY電路輸出埠0.5A至2A的可用mAh及Wh數據,比起TI電路下只有2A輸出比較好,可達
82%可用Wh,不過整體仍維持在85%~82%可用Wh之間
1A輸出的12090mAh同樣比標示的額定電容量12700mAh要低一些
http://farm2.static.flickr.com/1521/24563524164_4e3e9e7a2c_o.jpg
![](http://farm2.static.flickr.com/1521/24563524164_4e3e9e7a2c_o.jpg)
0.5A至2A的放電電壓與放電時間圖表
http://farm2.static.flickr.com/1645/25194201655_5cee998c16_o.jpg
![](http://farm2.static.flickr.com/1645/25194201655_5cee998c16_o.jpg)
TI電路輸出負載測試圖,當電流超過1.1A時會提高輸出電壓,輸出電流2.5A便會截止輸出
,具有過電流保護
http://farm2.static.flickr.com/1528/25194201545_87b7568ee0_o.jpg
![](http://farm2.static.flickr.com/1528/25194201545_87b7568ee0_o.jpg)
SILERGY電路輸出負載測試圖,電流超過1.1A時也會提高輸出電壓,輸出電流超過2.5A便
會截止輸出,也具有過電流保護
http://farm2.static.flickr.com/1591/25075927432_32a58ca093_o.jpg
![](http://farm2.static.flickr.com/1591/25075927432_32a58ca093_o.jpg)
兩埠加起來最大輸出電流為3.9A,當超過此總和電流值後便會自動關閉輸出
http://farm2.static.flickr.com/1470/24567368143_9aac551d77_o.jpg
![](http://farm2.static.flickr.com/1470/24567368143_9aac551d77_o.jpg)
優點:
1.20000mAh電量,提供長時間電力供應
2.TI MAXCharge充電定義,可用QC 2.0充電器以9V/12V進行充電,縮短充電時間
3.各輸出電流下整體可用Wh維持在81%以上
4.單埠及雙埠輸出均具備過電流保護機能
缺點:
1.因為大容量電池的關係,體型及重量略大
2.比起金屬外殼,塑膠外殼質感沒那麼好
3.僅有快充輸入,沒有支援快充輸出(把其中一埠換成快充輸出也好)
4.邊充邊用時會自動降到僅用5V充電,而TI電路因為其原始特性的關係,在邊充邊用下輸
出壓降比較大
報告完畢,謝謝收看
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※ 文章網址: https://www.ptt.cc/bbs/MobileComm/M.1456154830.A.913.html
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因為單IC輸出有限,如果同時充大電流裝置會影響輸出穩定性,嚴謹的都會用獨立迴路
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※ 編輯: wolflsi (1.175.177.87), 02/23/2016 00:51:26
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沒錯,快充輸入是由TI負責並同時輸出5V,另外一組SILERGY輸出另一組5V
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※ 編輯: wolflsi (1.175.177.87), 02/23/2016 19:38:14
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