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解碼T20黑科技:智能電池

2019-11-22 08:57:58 來源:DJI大疆農業 閱讀量:21495 評論

  【農機網 明星企業
 
  大疆農業植保無人飛機 T20 的發布,實現了安全、、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。
 
  植保作業當中,電池可謂耗材,如何實現安全與并舉?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,就能實現滿載循環作業,眼見為實。
 
點擊觀看T20智能電池循環作業測試
 
  不僅如此,T20 智能電池無需依靠額外裝備輔助散熱,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 電池實現落地即充,無需冷卻。
 
  為了能夠適用于各種嚴苛環境,如丘陵、山地、果園、高海拔等作業場景,T20 為電芯設計了更大余量的放電電流,大持續輸出為 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場景。 T20 將帶你超越更多可能,實現更多作業場景需求。
 
  T20 的電池循環壽命能夠達到保內600 次循環,相比 T16 電池的 400 次,壽命提升 50%,大大降低了用戶的作業成本。這主要得益于優化了電芯設計,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,通過電池循環壽命的提升以及充放電循環時間的減少能夠直接降低作業成本。以電池作業一次 8 分鐘,作業完成充電大約 15 分鐘計算,只需要 3 塊電池 2 個充電器即可滿足循環作業。
 
  以每次循環作業 25 畝來計算,電池保內循環 600 次,相當于作業750 次(植保機作業一個架次,并未消耗完一整個電池循環,配合合理的電池使用和維護,可作業更多架次)。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≈ 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,數萬次極限飛行測試,數十萬次充放實驗,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生產工具革新的根本,真正實現藏糧于技,幫助用戶增產增效。下期——《噴灑系統》,我們繼續解碼 T20 的黑科技。
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