To improve a regeneration rate while suppressing a possibility such that a user feels stress.SOLUTION: A power-assisted bicycle comprises: a motor 11 which drives a front wheel or a rear wheel according to a tread force applied to a pedal; a battery 12 which stores electric power regenerated by the motor 11; a vehicle speed detection part 14; a brake operation detection part 15; a pedal rotation detection part 16 which detects rotation of the pedal; and a control part 17 which performs changeover between a first regeneration mode in which regeneration is performed by the motor 11 in a first case that operation of a brake lever is detected and in a second case that a vehicle speed increase is detected and a rotation number of the pedal is a second threshold or less, and a second regeneration mode in which regeneration is performed by the motor 11 in the first case, the second case and a third case that a rotation number of the pedal is a third threshold or less.SELECTED DRAWING: Figure 3
【課題】ユーザがストレスを感じるおそれを抑制しつつ回生率を向上させる。【解決手段】電動アシスト自転車は、ペダルに加えられた踏力に応じて前輪または後輪を駆動するモータ11と、モータ11によって回生された電力を蓄えるバッテリ12と、車速検出部14と、ブレーキ操作検出部15と、ペダルの回転を検出するペダル回転検出部16と、ブレーキレバーの操作が検出される第1の場合と、車速の上昇が検出され、かつ、ペダルの回転数が第2閾値以下である第2の場合とにモータ11による回生を行う第1回生モードと、第1の場合と、第2の場合と、ペダルの回転数が第3閾値以下である第3の場合とにモータ11による回生を行う第2回生モードとの切り替えを行う制御部17とを備える。【選択図】図3
POWER-ASSISTED BICYCLE
電動アシスト自転車
2019-07-25
Patent
Electronic Resource
Japanese
Power-assisted bicycle power system and power-assisted bicycle
European Patent Office | 2020
|European Patent Office | 2021
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