邱煒程 | Khoo Wee Chern

素人工程師改造電動卡丁車Amateur engineer transforms electric kart

By 邱煒程 | Khoo Wee Chern, March 01, 2019

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素人工程師改造電動卡丁車
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一位從美國維吉尼亞理工大學機械系畢業的行競科技Xing Mobility工程師,利用空檔時間開發可瞬間爆發大動力的電動賽車技術,為了測試核心技術的極限,將退役的125c.c.卡丁車改造成電動卡丁車,名為Rovilus Falcon 3.0。 採用DC無刷高性能馬達18kw(約25hp),裡頭的三相變頻讓轉速調整的範圍更寬廣,使電壓和轉速成正比,能作出線性化的表現。起步的瞬間扭力非常大,從低速到高速都以維持穩定的速度和扭力,在低速也有很強的負載能力。此外,使用被刺穿/火燒不會爆炸的片狀鋰三元電池,結合複合式冷卻,擁有6000次的充電循環,是一般電池壽命的12倍,只要半小時就能充飽,透過自行設計的BMS電池管理系統下,能輸出700A的變相電流,讓馬達有穩定的25hp/3.26kgm,適合卡丁車、摩托車、高爾夫球車等輕型載具。 為了證明電動卡丁車Falcon 3.0有多快,我邀請卡丁車場派出125c.c.的IAME X30(30hp/2kgm)一起下場。雖然Falcon 3.0的車重120kg,但配重恰當讓輪胎的抓地力平均,借助馬達的強勁扭力能彌補超重的劣勢,尤其在連續彎道差點就要超越X30,但大直線的後段就拉開距離(電動車極速不比汽油車高)。 親自下場體驗,沒有太多的震動讓駕馭變得輕鬆一些,雖然恐怖的加速力很快到極速,但給予的高穩定性讓車手很有信心的入彎,是非常有樂趣的卡丁車。 文章(附影片)連結:https://carnews.com/article/info/322edd28-e01e-11e8-9f03-42010af00004/ Youtube連結: https://www.youtube.com/watch?v=CeEVnyY9nKI Option雜誌專訪:https://drive.google.com/drive/folders/12mqTjZIZsPCJ-x-nwuO-nfNNrvvhLyXd?usp=sharing
A Xing Mobility engineer from the Department of Mechanical Engineering at Virginia Tech University in the United States, using the free time to develop an electric racing technology that can explode with great power, in order to test the limits of the core technology, will be retired 125c.c. The karting was converted into a electric kart called Rovilus Falcon 3.0. Using DC brushless high-performance motor 18kw (about 25hp), the three-phase inverter inside makes the speed adjustment range wider, which makes the voltage and speed proportional to linear performance. At the moment of starting, the torque is very large, from low speed to high speed to maintain stable speed and torque, and also has a strong load capacity at low speed. In addition, the use of a sheet-like lithium ternary battery that is pierced/fired without exploding, combined with compound cooling, has 6,000 charge cycles, which is 12 times the life of a typical battery, and can be fully charged in half an hour. Under the BMS battery management system, it can output 700A of variable phase current, so that the motor has a stable 25hp/3.26kgm, suitable for light vehicles such as karting, motorcycles and golf carts. In order to prove how fast the electric kart Falcon 3.0 is, I invite the Karting yard to send the 125c.c. IAME X30 (30hp/2kgm) to the end. Although the weight of the Falcon 3.0 is 120kg, the counterweight is suitable for averaging the grip of the tire. The strong torque of the motor can make up for the disadvantage of overweight, especially when the continuous curve is almost over the X30, but the rear of the big straight line is pulled away. (The speed of electric vehicles is not higher than that of gasoline vehicles). In person, there is not much vibration to make driving easier. Although the acceleration of horror is very fast, the high stability gives the driver a confident turn. It is a very fun go-kart. Article (with video) link: https://carnews.com/article/info/322edd28-e01e-11e8-9f03-42010af00004/ Youtube link: https://www.youtube.com/watch?v=CeEVnyY9nKI Option magazine interview: https://drive.google.com/drive/folders/12mqTjZIZsPCJ-x-nwuO-nfNNrvvhLyXd?usp=sharing

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