CN213292617U

CN213292617U - Power-assisted system and power-assisted scooter

Info

Publication number: CN213292617U
Application number: CN202020676129.5U
Authority: CN
Inventors: 李传刚; 周奇; 吴俊�
Original assignee: Changzhou Hongji Two Wheeled Intelligent Transportation Means Co ltd
Current assignee: Changzhou Hongji Two Wheeled Intelligent Transportation Means Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-05-28
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses a power assisting system and a power assisting scooter, wherein the power assisting system comprises a human power mechanism, a generator, a storage battery, a controller and at least one motor; the human power mechanism and the generator are in a transmission relation; the generator and the storage battery can both supply power to the motor; the controller is used for controlling the power supply mode of the motor, so that the generator singly supplies power to the motor or the generator and the storage battery jointly supply power to the motor. The power-assisted system and the power-assisted scooter of the utility model recover mechanical energy and convert the mechanical energy into electric energy by arranging the generator, and the generator preferentially supplies power to the motor, so that the endurance mileage of the scooter can be improved under the condition that the power of the motor is the same as the capacity of the battery; and the scheme has the advantages of simple structure, good process performance and low production cost.

Description

Power-assisted system and power-assisted scooter

Technical Field

The utility model relates to a helping hand car technical field that rides instead of walk especially relates to a helping hand system and helping hand type car that rides instead of walk.

Background

The existing electric bicycles and electric mopeds in the market all convert the consumed electric energy into mechanical energy to drive the vehicles to run, and basically improve the efficiency of the motor or the capacity of a battery for increasing the endurance mileage, so the integral use cost is higher.

SUMMERY OF THE UTILITY MODEL

The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a can retrieve helping hand system and helping hand type car of riding in order to promote vehicle continuation of the journey mileage to the mechanical energy of in-process.

The technical scheme is as follows: in order to achieve the above object, the power assisting system of the present invention comprises a human power mechanism, a generator, a storage battery, a controller and at least one motor;

the human power mechanism and the generator are in a transmission relation;

the generator and the storage battery can both supply power to the motor;

the controller is used for controlling the power supply mode of the motor, so that the generator singly supplies power to the motor or the generator and the storage battery jointly supply power to the motor.

Furthermore, the generator also comprises a speed sensor for measuring the rotating speed of the middle shaft of the generator and a torque sensor for measuring the torque of the middle shaft of the generator;

the speed sensor and the torque sensor are both electrically connected with the controller.

Further, there are two of the motors, two of the motors are connected in parallel, and the controller is in control connection with each of the motors.

Further, still include solar cell panel, solar cell panel with the battery electricity is connected.

A power-assisted scooter comprises a scooter body and the power-assisted system; the manual mechanism and the motor are both in driving connection with the vehicle body.

Further, the vehicle body is a two-wheeled bicycle having two wheels;

the power assisting system comprises one or two electric motors; when the power assist system includes only one of the motors, the motor is mounted at a front wheel or a rear wheel; when the power assisting system only comprises two motors, the two motors are respectively arranged at the two wheels;

the generator is a central generator, and the central axis of the generator is coincident with the central axis of the manpower mechanism.

Further, the power assisting system further comprises a solar panel, and the solar panel is electrically connected with the storage battery; the solar panel is arranged on the front side of the vehicle body.

Has the advantages that: the power-assisted system and the power-assisted scooter of the utility model recover mechanical energy and convert the mechanical energy into electric energy by arranging the generator, and the generator preferentially supplies power to the motor, so that the endurance mileage of the scooter can be improved under the condition that the power of the motor is the same as the capacity of the battery; and the scheme has the advantages of simple structure, good process performance and low production cost.

Drawings

FIG. 1 is a schematic view of a booster system;

FIG. 2 is a schematic flow diagram of a power assist method;

FIG. 3 is a schematic structural diagram of a moped.

In the figure: 1-a human power mechanism; 2-a generator; 3-a storage battery; 4-an electric motor; 5-a controller; 6-solar panel; 7-a speed sensor; 8-a torque sensor; 9-a vehicle body; 91-vehicle wheel.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The booster system shown in fig. 1 comprises a human power mechanism 1, a generator 2, a battery 3, a controller 5 and at least one electric motor 4.

In this embodiment, the human-powered mechanism 1 is a pedal mechanism of a bicycle, and the pedal mechanism can drive the generator 2 to rotate, so that the generator 2 can recover a part of mechanical energy and convert the mechanical energy into electric energy.

The motor 4 is used for outputting power to the moped where the motor 4 is located, and one or more motors can be arranged on the motor 4 to meet the driving requirements of the moped.

The generator 2 and the storage battery 3 can both supply power to the motor 4; the controller 5 is configured to control a power supply mode to the motor 4 such that the generator 2 alone supplies power to the motor 4 or the generator 2 and the battery 3 jointly supply power to the motor 4, that is: in any case, the electric energy generated by the generator 2 is preferably used to power the motor 4, so that the purpose of saving the electric energy in the storage battery 3 can be effectively achieved.

In this embodiment, the generator 2, the storage battery 3 and the motor 4 are connected in parallel, and the parallel branch where the generator 2 and the storage battery 3 are located is provided with a switch that can be controlled to be turned on and off by the controller 5, so that the controller 5 can switch the power supply mode according to the actual operation condition of the moped where the power assisting system is located. In practical use, the generator 2 needs to be used together with the rectification transformation module, so that the current output by the generator 2 is converted into stable and satisfactory electric energy to be output to the motor 4.

In order to facilitate the controller 5 to monitor the running condition of the moped where the power-assisted system is located, the power-assisted system further comprises a speed sensor 7 for measuring the rotating speed of the central shaft of the generator 2 and a torque sensor 8 for measuring the torque of the central shaft of the generator 2; the speed sensor 7 and the torque sensor 8 are both electrically connected with the controller 5. In this embodiment, the speed sensor 7 and the torque sensor 8 are both disposed at the central axis of the generator 2.

In practical use, a general moped only carries one electric motor 4, in the special power assisting system shown in fig. 1, there are two electric motors 4, two electric motors 4 are connected in parallel, and the controller 5 is in control connection with each electric motor 4 to control whether each electric motor 4 is operated or not. Therefore, by arranging the two small motors 4, under the condition that the design power is equal, the cost of the two small motors 4 is much less than that of one high-power motor, and when the required torque is small, the controller 5 only needs to drive one motor 4 to operate, and the electric energy required by the operation of the motor 4 at the same rotating speed is smaller than that required by the operation of the high-power motor, so that the operation time of the power-assisted system can be effectively prolonged. Furthermore, in other embodiments, the booster system may also carry a greater number of electric motors 4 as required, which should be considered as falling within the scope of the present invention.

Preferably, in order to supply the electric quantity to the storage battery 3 in the riding process as much as possible, the power assisting system further comprises a solar cell panel 6, the solar cell panel 6 is electrically connected with the storage battery 3, so that the solar cell panel 6 can collect solar energy and convert the solar energy into electric energy to charge the storage battery 3 in the weather with sunlight so as to prolong the running time of the power assisting system.

The utility model also provides a helping hand method of helping hand system, its controller 5 that is applied to foretell helping hand system, as shown in fig. 2, the method includes following step A1-A4:

step a1 of calculating the current generated power of the generator 2 and the target output power of the motor 4;

in this step, the control system calculates the generated power of the generator 2 by acquiring the detection data of the speed sensor 7, and calculates the target output power of the motor 4 by acquiring the detection data of the torque sensor 8. When the data obtained by the speed sensor 7 is higher, the higher the rotation speed of the shaft in the generator 2 is, the higher the generated power of the generator 2 is, and the specific value of the generated power can be calculated according to the relation between the rotation speed and the generated power. Through the data obtained by the torque sensor 8, the controller 5 can obtain the torque value acted on the human mechanism 1 by the user, can calculate the target torque of the motor according to the preset distribution model of the human torque and the motor torque, and can calculate the target output power of the motor according to the target torque and the preset distribution model of the human torque and the motor torque. The distribution model of the manpower torque and the motor torque can adopt the prior art, or can simply set the ratio of the manpower torque and the motor torque to be constant.

Step a2, comparing the generated power with the target output power; when the generated power is greater than the target output power, the step A3 is performed, and when the generated power is less than the target output power, the step A4 is performed;

step A3, controlling the generator 2 to solely supply power for the motor 4;

step a3, controlling the generator 2 to jointly supply power to the motor 4 with the storage battery 3.

Through the power-assisted method, the controller 5 can intelligently switch the control mode, so that the electric energy power meets the requirement of the motor 4 in real time, the situation of insufficient power supply or electric energy waste cannot occur, and the control is simple and effective.

Preferably, since there are two motors 4, the step a1 is followed by the following steps B1-B2:

step B1, judging whether the power of the motor 4 meets the driving requirement according to the target output power, if so, entering step B2, otherwise, entering step B3;

a step B2 of controlling one of the motors 4 to operate;

and step B3, controlling the two motors 4 to operate together.

Through the method, the double motors can be effectively matched for assisting power. In actual use, because the single motor operates most of the time, the controller 5 can switch the two motors 4 to operate according to the operation time and other parameters, so that the two motors 4 are aged in a balanced manner, and the whole service life of the power assisting system is prolonged.

The utility model also provides a power-assisted scooter, as shown in figure 3, which comprises a scooter body 9 and the power-assisted system; the manpower mechanism 1 and the motor 4 are in driving connection with the vehicle body 9.

In this embodiment, the vehicle body 9 is a two-wheeled bicycle having two wheels 91 (including a front wheel and a rear wheel);

in one embodiment, the booster system comprises an electric motor 4, the electric motor 4 being mounted at a front wheel position or a rear wheel position of the vehicle body 9, the electric motor 4 preferably being in the form of a wheel hub motor.

In another embodiment, as shown in fig. 3, the power assisting system includes two motors 4, and the two motors 4 are respectively installed at two wheels 91; the generator 2 is a central generator, and the axis of the generator coincides with the central axis of the human power mechanism 1. Through installing generator 2 in human power mechanism 1's position, generator 2's resistance is similar with artificial resistance of riding, adjusts to step on frequently and is equivalent to infinitely variable, and the helping hand also can be adjusted in real time to user's speed governing helping hand system for the power that provides after the helping hand system operation has better followability, and power follow-up effectively promotes and rides experience.

The solar cell panel 6 is disposed on the front side of the vehicle body 9.

The power-assisted system and the power-assisted scooter of the utility model recover mechanical energy and convert the mechanical energy into electric energy by arranging the generator, and the generator preferentially supplies power to the motor, so that the endurance mileage of the scooter can be improved under the condition that the power of the motor is the same as the capacity of the battery; and the scheme has the advantages of simple structure, good process performance and low production cost.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A power assisting system is characterized by comprising a human power mechanism, a generator, a storage battery, a motor and a controller;

the human power mechanism and the generator are in a transmission relation;

the generator and the storage battery can both supply power to the motor;

2. The power assist system of claim 1, further comprising a speed sensor for measuring a rotational speed of the generator central shaft and a torque sensor for measuring a torque of the generator central shaft;

3. The force assist system of claim 1, wherein there are two of the electric motors, the two electric motors being connected in parallel, and the controller being in control communication with each of the electric motors.

4. The force assist system of claim 1, further comprising a solar panel electrically coupled to the battery.

5. A power assisted scooter, comprising a body and a power assisted system according to claim 1; the manual mechanism and the motor are both in driving connection with the vehicle body.

6. The power assisted scooter of claim 5 wherein the body is a two-wheeled bicycle having two wheels;

7. The power-assisted scooter of claim 5, wherein the power-assisted system further comprises a solar panel electrically connected to the battery; the solar panel is arranged on the front side of the vehicle body.