To provide an electric bicycle that can travel through self-charging, offers the maximum mileage close to infinity, requires a lighter pedal effort than an ordinary bicycle does, gives a sense of driving analogous to that of a power-assisted bicycle, and can travel on public roads without a license.SOLUTION: The rotation of a crankshaft is transmitted to an alternator for the purpose of electricity generation. The direct-current output power is stored in a secondary battery, and concurrently fed to a hub motor of a drive wheel via speed control means. The number of rotations of the hub motor is changed in various shift modes on the basis of the number of rotations of the crankshaft, whereby traveling speed control is implemented. The secondary battery is charged by the alternator during power traveling, and charged with regenerative electric power fed from the hub motor during inertial traveling. When a voltage drop is anticipated because of frequent start and halt over a short period of time, a bicycle stand may be raised and a pedal may be pushed for self-charging. When it takes much time to fully charge the secondary battery, the secondary battery may be detached and charged using a dedicated charger outdoors.SELECTED DRAWING: Figure 1
【課題】自己充電で走行でき、最大走行距離が無限に近く、ペダル踏力が普通自転車よりも軽くて電動アシスト自転車に類似した運転感覚が得られ、無免許で公道走行が可能な電動自転車。【解決手段】クランク軸の回転をオルタネーターに伝えて発電し、その直流出力電力を二次電池に蓄電すると同時に速度制御手段を介して駆動輪のハブモーターに供給し、クランク軸の回転数を基に各種の変速モードでハブモーターの回転数を変化させて走行速度制御を行う。二次電池は動力走行中にはオルタネーターから充電され、惰力走行中にはハブモーターからの回生電力によって充電されるが、発進・停止が短時間で頻繁に行われて電圧低下が懸念される場合には停車し、スタンドを立ててペダルを漕いで自己充電することができる。満充電までに時間を要する場合は二次電池を取り外し、屋内にて専用の充電器で充電することも可能である。【選択図】図1
ELECTRIC BICYCLE CAPABLE OF TRAVELING THROUGH SELF-CHARGING
自己充電で走行可能な電動自転車
2021-04-22
Patent
Elektronische Ressource
Japanisch
POWER-ASSISTED BICYCLE CAPABLE OF TRAVELING WITH SELF-CHARGING
Europäisches Patentamt | 2021
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