Electric bicycle capable of pedal power generation
The electric bicycle integrates a pedal generator and hub motor with smart power control and a reinforced stand to address efficiency and safety issues, generating 0.4 kWh per hour and extending range by 20-30%, while reducing grid charging and emissions.
Patent Information
- Application Number
- JP2025001359U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-07-02
- Estimated Expiration
- 2035-04-29
AI Technical Summary
Conventional electric bicycles rely on external charging and lack efficient pedal power generation, have low fitness integration, and pose safety risks during power generation.
An electric bicycle equipped with a pedal generator, storage battery, and hub motor, featuring a one-way bearing connection, smart power control, and a reinforced parking stand, enabling efficient power generation and enhanced safety.
The system generates 0.4 kWh of power per hour, extends cruising range by 20-30%, improves human power generation efficiency by 60%, and ensures safety with a 1.5x anti-tipping coefficient, reducing grid charging and emissions.
Smart Images
Figure 0003251840000001_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electric bicycles, and particularly to an electric bicycle capable of pedal power generation.
Background Art
[0002] Conventional electric bicycles rely on charging from an external power source and cannot be supplemented with power by human effort. Existing pedal power generation devices have low efficiency (usually less than 200W) and cannot meet the battery charging needs of electric bicycles. In addition, fitness pedal exercise equipment is not integrated with a means of transportation, and there are safety issues such as being prone to falling during power generation while parked.
Summary of the Invention
[0003] In order to solve the problems in the above-mentioned background art, the purpose of this utility model is to provide an electric bicycle capable of pedal power generation.
[0004] To achieve the above technical problems, this application provides the following technical means. The electric bicycle capable of pedal power generation according to this utility model includes a pedal generator, a storage battery, and a hub motor. The pedal generator is connected to the pedal spindle through a one-way bearing. The pedal generator, the storage battery, and the hub motor are sequentially electrically connected. The storage battery is electrically connected to a circuit board, and the hub motor drives the rear wheel. Preferably, the pedal can be easily folded and unfolded by a spring lock mechanism. Preferably, the circuit board is electrically connected to a speed adjustment rotary handle.
[0005] Compared with the prior art, the advantages of this utility model are as follows. Energy self-sufficiency: It can supplement about 0.4 kWh of power in one driving (1 hour), and can extend the cruising range by 20 - 30%. Health consideration: By adjusting the output stage, the exercise load can be appropriately controlled according to various user needs. Safety and reliability: The anti-tipping coefficient of the stand reaches 1.5 times the Chinese national standard and can also adapt to slopes with an inclination of less than 10°. Energy saving and environmental consideration: The human power generation efficiency is improved by 60% compared with the conventional method, reducing the charging from the power grid, which also leads to the reduction of CO2 emissions. In addition, by preventing over-discharge of the battery and extending its life, the environmental load associated with manufacturing and disposal can also be indirectly reduced.
Brief description of the drawings
[0006] To more clearly explain the technical means in the embodiments of the present utility model or the prior art, the following drawings used will be briefly introduced. Obviously, the drawings shown below are schematic diagrams showing a part of the structure of the present utility model and do not cover all of them.
Figure 1
Modes for carrying out the invention
[0007] With reference to the drawings in the embodiments of the present utility model below, the technical means in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model and not all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present utility model. In the description of the embodiments of the present utility model, the positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. mentioned are based on the orientation or positional relationship shown in the drawings or based on the customary arrangement when the product of the present utility model is in use. This is for the convenience of explaining the present utility model and simplifying the description, and does not imply that the device or component needs to have a specific orientation, so it cannot be understood as a limitation to the present utility model. Furthermore, terms such as "first", "second", "third", etc. are used for distinction and do not imply relative importance. Terms such as "horizontal", "vertical", "suspended", etc. do not require the parts to be absolutely horizontal, vertical or suspended, and they can be slightly inclined. For example, "horizontal" simply refers to a direction that is more horizontal relative to "vertical", and it does not necessarily have to be completely horizontal and can be slightly inclined. In the description of the embodiments of this utility model, the terms "a number of", "a plurality of" indicate at least two. In the description of the embodiments of this utility model, unless otherwise explicitly specified or limited, the terms "installed", "attached", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be a direct connection or an indirect connection through an intermediate medium or an internal connection between two parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific situation.
[0008] In this embodiment, based on FIG. 1, an electric bicycle capable of pedal power generation will be described in detail. The electric bicycle capable of pedal power generation according to this embodiment includes a pedal generator, a storage battery, and a hub motor. The pedal generator is connected to a pedal spindle through a one-way bearing. The pedal generator, the storage battery, and the hub motor are sequentially electrically connected. The storage battery is electrically connected to a circuit board, and the hub motor drives the rear wheel. The pedal can be easily folded and unfolded by a spring lock mechanism. The circuit board is electrically connected to a speed adjustment rotary handle. The circuit board includes a current sensor and a PWM controller.
[0009] (1) High-efficiency pedal power generation system Selection of pedal generator: Adopt a permanent magnet synchronous generator with a rated output of 400W and a rated rotation speed corresponding to the normal pedal rotation speed (50 - 70 RPM). Voltage matching design: Optimize the transmission ratio of the gearbox so that the generator output voltage slightly exceeds the battery voltage (e.g., 50 - 55V for a 48V battery) at normal driving speeds (15 - 20 km / h), enabling direct charging. Ergonomic design: Set the pedal resistance to 0.3 - 0.4 horsepower (about 224 - 298W) to conform to the moderate labor intensity standard. (2) Smart power control system Control module: Integrate a current sensor and a PWM controller to monitor the battery state and pedaling force in real time. Adjustment method: The maximum output current (5 - 15A) can be set from the handlebar knob or the smartphone app, and the control system automatically adjusts the power generation output to prevent excessive fatigue. Safety protection function: Built - in over - voltage and over - current protection circuits to prevent overcharging of the battery. (3) Reinforced parking stand Structural design: Adopt an H - type double - support structure, expand the strut width to 300mm, and install an anti - slip rubber pad at the bottom. Mechanical optimization: Arrange a triangular reinforcement plate at the connection between the stand and the vehicle body frame to withstand a lateral load of 500N in the vertical direction. Quick - lock mechanism: Equipped with a spring - assisted lock mechanism, enabling the stand to be deployed and folded with one - foot operation. Specifically, the pedal generator is connected to the pedal spindle via a one - way bearing, generates electricity during the pedaling operation, and is automatically disengaged during coasting. The control circuit of the circuit board is integrated within the battery compartment and communicates with the meter panel via the CAN bus. The fulcrum of the stand is set at a position 200mm in front of the rear wheel axle, realizing a stable moment balance.
[0010] The above description shows the utility model and its embodiments, but the scope of its protection is not limited thereto. Modifications or substitutions that can be easily conceived by those skilled in the art within the technical scope of the utility model should be construed as being included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the description in the claims.
Claims
1. An electric motorcycle capable of generating electricity by pedaling, comprising a pedal generator, a storage battery, and a hub motor, the pedal generator being connected to a pedal center shaft via a one-way bearing, the pedal generator, the storage battery, and the hub motor being electrically connected in sequence, the storage battery being electrically connected to a circuit board, and the hub motor driving a rear wheel.
2. 2. The electric motorcycle capable of generating electricity by pedals according to claim 1, wherein the pedals can be easily folded and unfolded by a spring lock mechanism.
3. 2. The pedal-powered electric motorcycle according to claim 1, wherein the circuit board is electrically connected to a rotating handle for adjusting speed.
4. 2. The pedal-powered electric motorcycle according to claim 1, wherein the circuit board includes a current sensor and a PWM controller.