高效率電動滑板研製

• Main Authors: Yi-Jie, Chen, 陳以杰
• Other Authors: Dr. Lin, Jeng-Chyan Muti
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/8h442d

碩士 === 國立勤益科技大學 === 電機工程系 === 104 === Skateboards are popular among young generation. Conventional skateboards require human power to slide forward. It could consume a lot of human energy and strength. Therefore skateboards remain as entertaining vehicles. However, if skateboards are electrified, electrical skateboards have the potential to become convenient commute vehicle due to their small form factor and light weight. This study developed an electrical skateboard with high efficiency. The developed e-skateboard consisted of a skateboard; a motor driver for dual motors; two brushless dc motors; power train of belts and wheels; battery system; blue tooth based hand-held remote controller. Via rolling the button on the hand-held controller, commands sending to motor drivers to drive the motors and subsequently the skateboard. The riders could manipulate the skateboard easily via the intuitive design of the hand-held controller. The motor driver was based on hall sensors in order to obtain smooth low speed performance including smooth rider and high torque in low speed. Smooth start was important for skater to stay balanced on the skateboard and high torque in low speed is important for climbing hills. Braking of the e-skateboard was realized by motor regenerating braking strategy. Expert and beginner modes were built in the driver for different levels of needs. This study adopted lithium ion cells to supply energy to the skateboard motors for their high energy and high power densities. Battery management system integrated with a efficient balance module, which ensured each cell could be charged fully without being overcharged, was integrated with the charger due to limited space in the skateboard. It took about 90 minutes to charge the battery fully. The developed e-skateboard was tested by lab instruments and road tests. A tailor made data acquisition system was constructed to measure and record performance data of the e-skateboard. Performance tests showed the developed e-skateboard could accelerate to 31.2 km/hr; 24V/9Ah battery could provide 21.9 km of range; the BLDC motors could climb a 10 degree hill easily. In fair compairson the developed e-skateboard outperformed most of the existing e-skateboards in the market.