US 12,291,307 B2
Electric bicycle driving device and method therefor
Kyung Ho Hong, Seoul (KR); and Seungkyung Lee, Gyeonggi-do (KR)
Assigned to HL MANDO CORPORATION, Gyeonggi-do (KR)
Appl. No. 17/615,545
Filed by HL MANDO CORPORATION, Gyeonggi-do (KR)
PCT Filed May 29, 2020, PCT No. PCT/KR2020/007010
§ 371(c)(1), (2) Date Nov. 30, 2021,
PCT Pub. No. WO2020/242248, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 10-2019-0064806 (KR), filed on May 31, 2019.
Prior Publication US 2022/0234680 A1, Jul. 28, 2022
Int. Cl. B62M 6/50 (2010.01); B60L 15/20 (2006.01); B62M 6/60 (2010.01); B62M 6/90 (2010.01)
CPC B62M 6/50 (2013.01) [B60L 15/20 (2013.01); B60L 2200/12 (2013.01); B60L 2240/12 (2013.01); B60L 2240/423 (2013.01); B60L 2250/26 (2013.01); B62M 6/60 (2013.01); B62M 6/90 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A device for driving a chainless electric bicycle, the device comprising:
a motor configured to drive a driving wheel;
a generator configured to generate power using a pedal;
a generator position sensor configured to measure a value of a rotational position of the generator;
a motor position sensor configured to measure a value of a rotational position of the motor; and
a controller configured to calculate a difference value obtained by subtracting a value obtained by multiplying the value of the rotational position of the motor by a gear ratio from the value of the rotational position of the generator and control the generator or the motor on the basis of the difference value.