解碼T20黑科技：智能電池

2019-11-22 08:57:58 來源：DJI大疆農業(yè) 閱讀量：21476 評論

　　【農機網(wǎng) 明星企業(yè)】
 
　　大疆農業(yè)植保無人飛機 T20 的發(fā)布，實現(xiàn)了安全、、上的技術突破。如此的背后究竟隱藏著什么樣的黑科技呢？
 
　　前方高能，一波 T20 黑科技來襲。
 
　　植保作業(yè)當中，電池可謂耗材，如何實現(xiàn)安全與并舉？如何降低電池溫升？如何減少噴灑成本？
 
　　解碼 T20 黑科技集
 
　　智能電池
 
　　T20 電池采用高溫化學材料，優(yōu)化電解液配方，使得電芯高溫性能增強，溫升減少10℃。相比目前市面上的普通植保機電池僅能承受 45℃ 而言，T20電池可耐受的充電溫度高達 55-60℃。
 
　　另外，T20 智能電池充電倍率由 3C 提升至 3.5C，放電能力提升至 9C(C表示充放電能力)。工作時發(fā)熱量相比上一代產品降低了 50%。這意味著充放電時電流更大，發(fā)熱量會更低，減少了電池的冷卻時間。T20只需三電兩充，就能實現(xiàn)滿載循環(huán)作業(yè)，眼見為實。
 
點擊觀看T20智能電池循環(huán)作業(yè)測試
 
　　不僅如此，T20 智能電池無需依靠額外裝備輔助散熱，它懂得好風憑借力。利用電池自身的全金屬外殼將熱量導出，再巧妙借助飛行時的強大風場帶走熱量，做到 “邊飛邊散熱”。終使得 T20 電池實現(xiàn)落地即充，無需冷卻。
 
　　為了能夠適用于各種嚴苛環(huán)境，如丘陵、山地、果園、高海拔等作業(yè)場景，T20 為電芯設計了更大余量的放電電流，大持續(xù)輸出為 160A。為什么這樣設計呢？我們知道飛機爬坡時會耗費力氣，設計更大的電流余量，能夠支持更多的作業(yè)場景。
 
　　這就好比一個大極限可以挑 100 斤擔子的人，在平路上剛好能挑起 100 斤，但爬坡就不行了。但是如果他是一個可以挑 130 斤的人，那上坡時他也可以輕松挑起 100 斤。然而目前市面上的植保機一般是按照 0海拔高度即普通大田作物模式去設計電流能力，因此無法覆蓋更多作業(yè)場景。 T20 將帶你超越更多可能，實現(xiàn)更多作業(yè)場景需求。
 
　　T20 的電池循環(huán)壽命能夠達到保內600 次循環(huán)，相比 T16 電池的 400 次，壽命提升 50%，大大降低了用戶的作業(yè)成本。這主要得益于優(yōu)化了電芯設計，散熱更均衡，能夠支持更大倍率充放電，降低溫升，有助于提升電池的循環(huán)壽命。
 
　　長久以來，鋰電池就是植保無人機成本的重要組成部分，通過電池循環(huán)壽命的提升以及充放電循環(huán)時間的減少能夠直接降低作業(yè)成本。以電池作業(yè)一次 8 分鐘，作業(yè)完成充電大約 15 分鐘計算，只需要 3 塊電池 2 個充電器即可滿足循環(huán)作業(yè)。
 
　　以每次循環(huán)作業(yè) 25 畝來計算，電池保內循環(huán) 600 次，相當于作業(yè)750 次(植保機作業(yè)一個架次，并未消耗完一整個電池循環(huán)，配合合理的電池使用和維護，可作業(yè)更多架次)。T20 電池每畝地的成本僅為 2毛1(1塊電池4000元÷25畝÷750次作業(yè)≈ 0.21元/畝)。
 
　　從 0 度的寒冬，飛到 40 度的酷暑，幾次材料換代，幾十塊打樣實驗田，數(shù)萬次極限飛行測試，數(shù)十萬次充放實驗，為的就是：要安全，還要長壽命率。
 
　　「黑科技」終究要回歸推動農業(yè)生產工具革新的根本，真正實現(xiàn)藏糧于技，幫助用戶增產增效。下期——《噴灑系統(tǒng)》，我們繼續(xù)解碼 T20 的黑科技。

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