阅读说明：本技术 电动机、包含该电动机的人电双混驱动自行车 (Motor and human-electric hybrid drive bicycle comprising same ) 是由 池洪 于 2021-10-28 设计创作，主要内容包括：公开了电动机、包含该电动机的人电双混驱动自行车,将人力与电动机的驱动以一种简单的方法叠加起来,实现人电双混驱动车辆行驶,甚至可以在耗电量极小的情况下,做远距离骑行,提高了车辆的续航能力。本发明的电动机结构简单,具有能够相对转动的外转子和内转子。本发明的人电双混驱动自行车至少具有以下三种行驶模式：纯电动驱动；电动驱动结合人力驱动；人力驱动结合扭矩电机驱动。(The motor and the human-electricity hybrid driving bicycle comprising the motor are disclosed, the human power and the driving of the motor are superposed by a simple method, the human-electricity hybrid driving bicycle can run, and the human-electricity hybrid driving bicycle can be used for riding for a long distance even under the condition of extremely low power consumption, so that the cruising ability of the bicycle is improved. The motor of the invention has simple structure and comprises an outer rotor and an inner rotor which can rotate relatively. The human-electric hybrid drive bicycle at least has the following three running modes: pure electric drive; the electric drive is combined with the manual drive; the manual drive is combined with the torque motor drive.)

1. A two thoughtlessly drive bicycles of people's electricity, its characterized in that includes:

the pedal mechanism (1) is provided with a first chain wheel (2); and

an electric motor, the electric motor comprising:

a housing (13);

the outer rotor (4), the outer rotor (4) is set up in outer casing (13) through the bearing group, the coaxial second sprocket (5) of installing on the outer rotor (4), the first sprocket (2) is connected with second sprocket (5) through the first chain (3);

the inner rotor (6) is arranged in the outer rotor (4) through a bearing set, the outer rotor (4) and the inner rotor (6) can coaxially and respectively rotate under the support of the bearing set, a third chain wheel (9) coaxial with the inner rotor is arranged on the inner rotor (6), and the third chain wheel (9) is connected with a fourth chain wheel (12) coaxial with the wheel (11) through a second chain (10); and

and a clutch (14) capable of controlling the stopping direction, which is arranged between the outer rotor (4) and the shell (13) and limits the rotating direction of the outer rotor (4) so as to counteract the reaction torque generated on the outer rotor (4) when the inner rotor (6) rotates under the electric drive.

2. The human-electric hybrid driven bicycle according to claim 1, further comprising:

the one-way meshing clutch (21) is characterized in that a driving meshing wheel is coaxially arranged on the outer rotor (4), and a driven meshing wheel is coaxially arranged with the inner rotor (6); and

and the torque motor (26) is connected with the outer rotor (4) through a gear set.

3. An electric motor, comprising:

a housing (13);

the outer rotor (4), the outer rotor (4) is set up in the outer casing (13) through the bearing group;

the inner rotor (6) is arranged in the outer rotor (4) through a bearing group, the outer rotor (4) and the inner rotor (6) can coaxially and respectively rotate under the support of the bearing group, a hollow sleeve shaft (18) is arranged at the axis part of the inner rotor (6), a core shaft (19) is arranged in the sleeve shaft (18), and the core shaft (19) is supported by bearings at two ends of the sleeve shaft (18); and

and a clutch (14) capable of controlling the stopping direction, which is arranged between the inner rotor (6) and the shell (13) and limits the rotating direction of the inner rotor (6) so as to counteract the reaction torque generated on the inner rotor (6) when the outer rotor (4) rotates under the electric drive.

4. A human-electric double-hybrid driving bicycle is characterized by comprising the motor of claim 3, wherein an outer rotor (4) of the motor is coaxially arranged with a bicycle wheel (11), a shaft core (19) is fixed on a bicycle frame (20), an inner rotor (6) is provided with a chain wheel (17) coaxial with the inner rotor, and the chain wheel (17) is connected with a chain wheel (2) of a pedal mechanism (1) through a chain (3).

5. A human-electric double-hybrid driven bicycle, characterized by comprising the electric motor of claim 3, a controllable three-gear meshing clutch (22) and a torque motor (26), wherein the torque motor (26) is connected with an outer rotor (4) of the electric motor, the outer rotor (4) is coaxially arranged with a bicycle wheel (11), a shaft core (19) is fixed on a bicycle frame, a driving wheel (23) of a controllable three-gear meshing clutch (22) is coaxially arranged with a sleeve shaft (18) on an inner rotor (6) of the motor, a driven wheel (24) of the controllable three-gear meshing clutch (22) is coaxially arranged on the inner rotor (6), the other driven wheel (25) of the controllable three-gear meshing clutch (22) is coaxially arranged on the outer rotor (4), and a chain wheel on the pedal mechanism is connected with a chain wheel (17) coaxially arranged with the driving wheel (23) through a chain.

6. The human-electric hybrid drive bicycle as claimed in claim 5, wherein the torque motor (26) is coupled to the outer rotor (4) via a gear set (20, 21), the gear (20) is mounted on the output shaft of the torque motor (26), and the gear (21) meshed with the gear (20) is coaxial with the sprocket (17) and the driver (23).

7. A two thoughtlessly drive bicycles of people's electricity, its characterized in that includes:

the pedal mechanism (1) is provided with a chain wheel (2); and

an electric motor, the electric motor comprising:

a housing (13);

the outer rotor (4), the outer rotor (4) is set up in outer casing (13) through the bearing group, the sprocket (17) on the outer rotor (4) is connected with sprocket (2) of the pedal mechanism (1) through the link chain (3);

the two inner rotors (6) are arranged in the outer rotor (4) through a bearing set, the two inner rotors (6) are respectively connected with two wheels, the two inner rotors (6) can coaxially and respectively rotate, and the lower outer rotor (4) and the inner rotors (6) can coaxially and respectively rotate under the support of the bearing set;

two coil windings (18) which are respectively acted on the two inner rotors (6) by magnetic fields generated when the two inner rotors are electrified so as to rotate; and

and the clutch (14) capable of controlling the stopping direction is arranged between the outer rotor (4) and the shell (13) and used for limiting the rotating direction of the outer rotor (4) so as to counteract the counter-rotating torque generated on the outer rotor (4) when the inner rotor (6) rotates.

Technical Field

The invention relates to a motor and a human-electric hybrid drive bicycle comprising the same.

Background

The electric bicycle is driven by an electric motor, and the running speed of the vehicle is also completely controlled by the electric motor. Although many electric bicycles are equipped with pedal mechanisms, it is impossible to increase the speed of the electric bicycle by manually pedaling the pedal mechanism during electric driving, because the rotational speed of the motor is basically determined at a certain input of electric energy, and the power of pedaling the pedal mechanism by a person cannot be superimposed on the output power of the motor. The pedal mechanism can be pedaled to drive the vehicle to run only under the condition of not using the motor for driving. However, the electric bicycle has a large weight and a large traveling inertia and resistance, so that the pedal mechanism is not practically used basically.

Disclosure of Invention

According to the motor and the human-electricity hybrid driving bicycle comprising the motor, the manpower and the driving of the motor are overlapped in a simple method, the human-electricity hybrid driving bicycle can run, the human-electricity hybrid driving bicycle can be ridden for a long distance even under the condition of extremely low power consumption, and the cruising ability of the bicycle is improved. The motor of the invention has simple structure and comprises an outer rotor and an inner rotor which can rotate relatively. The human-electric hybrid drive bicycle at least has the following three running modes: pure electric drive; the electric drive is combined with the manual drive; the manual drive is combined with the torque motor drive.

According to a first aspect of an embodiment of the present invention, a human-electric hybrid drive bicycle includes:

a pedal mechanism having a first sprocket thereon; and

an electric motor, the electric motor comprising:

a housing;

the outer rotor is arranged in the shell through a bearing set, a second chain wheel is coaxially arranged on the outer rotor, and the first chain wheel is connected with the second chain wheel through a first chain;

the inner rotor is arranged in the outer rotor through a bearing set, the outer rotor and the inner rotor can coaxially and respectively rotate under the support of the bearing set, a third chain wheel coaxial with the inner rotor is arranged on the inner rotor, and the third chain wheel is connected with a fourth chain wheel coaxial with a wheel through a second chain; and

and a clutch capable of controlling the stopping direction, which is arranged between the outer rotor and the shell and limits the rotating direction of the outer rotor so as to counteract the reaction torque generated on the outer rotor when the inner rotor rotates under the electric drive.

In the first aspect described above, the present invention further includes:

the driving meshing wheel of the one-way meshing clutch is coaxially arranged on the outer rotor, and the driven meshing wheel of the one-way meshing clutch is coaxially arranged with the inner rotor; and

and the torque motor is connected with the outer rotor through a gear set.

According to a second aspect of the embodiments of the present invention, there is provided a motor including:

a housing;

an outer rotor disposed within the housing by a bearing set;

the inner rotor is arranged in the outer rotor through a bearing group, the outer rotor and the inner rotor can coaxially and respectively rotate under the support of the bearing group, the axis part of the inner rotor is provided with a hollow sleeve shaft, a mandrel is arranged in the sleeve shaft, and the mandrel is supported by bearings at two ends of the sleeve shaft; and

and a clutch capable of controlling the stopping direction, which is arranged between the inner rotor and the shell and limits the rotation direction of the inner rotor so as to counteract the reaction torque generated on the inner rotor when the outer rotor rotates under the electric drive.

According to a third aspect of the embodiments of the present invention, there is provided a human-electric hybrid drive bicycle, comprising the electric motor of the second aspect, wherein the outer rotor of the electric motor is coaxially mounted with a bicycle wheel, the shaft core is fixed on a bicycle frame, and the inner rotor has a sprocket coaxial therewith, and the sprocket is connected with a sprocket of a pedal mechanism through a chain.

According to a fourth aspect of the embodiments of the present invention, there is provided a human-electric hybrid drive bicycle, including the electric motor of the second aspect, a controllable three-gear mesh clutch and a torque motor, wherein the torque motor is connected to the outer rotor of the electric motor, the outer rotor is coaxially mounted with a bicycle wheel, the shaft core is fixed on a bicycle frame, a driving wheel of the controllable three-gear mesh clutch is coaxially mounted with the sleeve shaft on the inner rotor of the electric motor, a driven wheel of the controllable three-gear mesh clutch is coaxially mounted on the inner rotor, another driven wheel of the controllable three-gear mesh clutch is coaxially mounted on the outer rotor, and a sprocket on a pedal mechanism is connected to a sprocket coaxially mounted with the driving wheel through a chain.

In the above fourth aspect, the torque motor is coupled to the outer rotor through a gear set, one gear of the gear set is mounted on the torque motor output shaft, and the other gear is coaxial with the sprocket and the driving wheel.

According to a fifth aspect of the embodiments of the present invention, there is provided a human-electric hybrid drive bicycle, including:

a pedal mechanism having a sprocket thereon; and

an electric motor, the electric motor comprising:

a housing;

the outer rotor is arranged in the shell through a bearing set, and a chain wheel on the outer rotor is connected with the chain wheel of the pedal mechanism through a chain;

the two inner rotors are arranged in the outer rotor through a bearing set, the two inner rotors are respectively connected with two wheels, the two inner rotors can coaxially and respectively rotate, and the outer rotor and the two inner rotors can coaxially and respectively rotate under the support of the bearing set;

the two coil windings are used for respectively acting magnetic fields generated when the two inner rotors are electrified so as to enable the two inner rotors to rotate; and

the clutch is arranged between the outer rotor and the shell and used for limiting the rotation direction of the outer rotor so as to counteract the counter-rotation torque generated on the outer rotor when the inner rotor rotates.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

Fig. 1 is a schematic view of a dual-rotor motor with an inner rotor as a main output shaft and a driving mechanism of a human-electric dual hybrid driving bicycle including the same according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a dual-rotor motor with an outer rotor as a main output shaft and a driving mechanism of a human-electric dual hybrid driving bicycle including the same according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a dual-rotor motor with two inner rotors and a driving mechanism of a human-electric dual hybrid bicycle including the same according to an embodiment of the present invention.

Fig. 4 is a schematic view of the human-electric hybrid driven bicycle shown in fig. 1 with an additional torque motor.

Fig. 5 is a schematic view of the human-electric hybrid driven bicycle shown in fig. 2 with an additional torque motor.

Detailed Description

The term "bicycle" refers to two-wheeled electric bicycles, three-wheeled electric vehicles with a manual pedaling mechanism, and four-wheeled electric vehicles.

Fig. 1 shows a birotor motor and a human-electric hybrid drive bicycle drive mechanism including the same. As shown in fig. 1, the electric motor includes an outer rotor 4, an inner rotor 6, a housing 13, and a clutch 14 with a controllable locking direction, the outer rotor 4 is disposed in the housing 13 through a bearing set, the inner rotor 6 is disposed in the outer rotor 4 through a bearing set, the outer rotor 4 and the inner rotor 6 are supported by the bearing sets to be coaxially rotatable, respectively, and the clutch 14 with a controllable locking direction is disposed between the outer rotor 4 and the housing 13 to limit the rotation direction of the outer rotor 4 so as to cancel the reaction torque generated to the outer rotor 4 when the inner rotor 6 is rotated by electric power.

The clutch (controllable overrunning clutch) 14 with controllable stopping direction works in the following way: when the inner rotor 6 of the motor rotates forward to drive the bicycle to move forward, the stopping direction of the clutch 14 which can control the stopping direction to the outer rotor 4 is opposite to the stopping direction under the action of the counter force which is not generated when the inner rotor 6 rotates, and the stopping direction is called as the forward stopping direction; when the inner rotor 6 of the motor rotates in the reverse direction, the stopping direction of the clutch 14 with controllable stopping direction is reversed, which is called reverse stopping direction in the invention.

With continued reference to fig. 1, the bicycle pedal mechanism 1 has a first sprocket 2, a second sprocket 5 is coaxially mounted on an outer rotor 4 of the motor, a third sprocket 9 is mounted on a shaft of an inner rotor 6, the first sprocket 2 is connected with the second sprocket 5 on the outer rotor 4 through a first chain 3, and the third sprocket 9 coaxial with the inner rotor 6 is connected with a fourth sprocket 12 coaxial with a wheel 11 through a second chain 10. The first chain wheel 2 on the bicycle pedal mechanism 1 transmits manpower to the second chain wheel 5 on the outer rotor 4 of the motor through the first chain 3 to drive the outer rotor 4 to rotate. Since the outer rotor 4 and the inner rotor 6 can coaxially and respectively rotate, when electric power is transmitted to the collecting ring 8 mounted on the outer rotor 4 through the brush 7 on the motor housing 13, a magnetic field generated when a coil winding connected with the collecting ring 8 in the outer rotor 4 is electrified acts on the inner rotor 6 to rotate the inner rotor. The rotation of the inner rotor 6 as an output shaft is transmitted to a fourth sprocket 12 coaxial with the wheel 11 through a third sprocket 9 and a second chain 10 coaxial therewith, thereby rotating the wheel 11 to advance the vehicle. When the inner rotor 6 is driven to rotate by electric power, a reaction torque is generated in the outer rotor 4, and in order not to cause the reaction torque to push the outer rotor 4 to rotate in the opposite direction to the inner rotor 6, a clutch 14 with a controllable locking direction is arranged between the housing 13 and the outer rotor 4, and is adjusted to a forward locking state. It should be noted that the outer rotor 4 can rotate in the same direction as the inner rotor 6.

When the inner rotor 6 is driven to rotate by electric power and the outer rotor 4 and the inner rotor 6 are driven by manpower to keep rotating in the same direction, superposition of manpower and electric power is realized, namely double-hybrid driving.

In addition, the driving mechanism also comprises a wheel brake disc 15 and a brake system 16.

The bicycle comprising the driving mechanism shown in fig. 1 has a pure electric driving mode, a range-extending or speed-increasing mode and a manpower driving energy-saving mode.

1. Pure electric drive mode

The pedaling mechanism 1 is not required to be pedaled, and is electrically driven as a common electric bicycle.

2. Extended range or speed increasing modes

When the driving mileage or speed of the vehicle needs to be increased, pure electric drive is adopted firstly, the speed of the vehicle is increased to a set speed, such as 20km/h, after the set speed is reached, the electric energy supply of the motor is not increased any more, at the moment, the pedal mechanism 1 is pedaled by manpower, and the speed of the vehicle is increased by manpower. This may increase the bicycle mileage or increase the speed of the bicycle.

3. Manpower-driven energy-saving mode

In order to save the electric quantity of the storage battery, pure manpower drive is ideally adopted. However, the electric bicycle is heavier than a common bicycle, and the driving resistance is very large due to the weight of people, so that the labor is very laborious when the electric bicycle is purely used. In practical situations, the electric energy supplied to the motor by the storage battery can be maintained in a critical state that the motor can just start the vehicle, and then the pedal mechanism 1 is pedaled by manpower to drive the vehicle to run. Compared with pure manpower driving, the mode is easier in manpower pedaling and riding, the power consumption is very low, and the cruising ability of the storage battery can be improved.

Fig. 2 shows a double-rotor motor having an outer rotor as a main output shaft and a human-electric double hybrid drive bicycle drive mechanism including the motor. The drive mechanism shown in fig. 2 differs from the drive mechanism shown in fig. 1 in that the outer rotor 4 of the electric motor is mounted coaxially with the wheel 11, the inner rotor 6 has a sprocket 17 coaxial therewith, and the sprocket 17 is connected to the sprocket 2 of the pedaling mechanism 1 by a chain 3.

When electric energy is transmitted to the coil windings in the outer rotor 4 through the electric power transmission line, a magnetic field generated by the coil windings acts on the outer rotor 4 to rotate, the rotating outer rotor 4 drives the wheels 11 to rotate, the vehicle is driven to move forward, and at the moment, the inner rotor 6 cannot rotate in the opposite direction under the stopping of the clutch 14 with the controllable stopping direction, so that the reverse thrust acting on the inner rotor 6 during the forward rotation of the outer rotor 4 is counteracted. At the moment, the pedaling mechanism 1 is pedaled, and manpower is transmitted to the inner rotor 6 through the chain wheel 2, the chain 3 and the chain wheel 17, so that the inner rotor 6 and the outer rotor 4 rotate in the same direction, and the power for driving the inner rotor 6 to rotate is superposed with the power for driving the outer rotor 4 to rotate, thereby realizing the man-electricity double-hybrid power driving.

With continued reference to fig. 2, the axis of the inner rotor 6 of the motor is a sleeve structure, which is called as a sleeve shaft 18, a core shaft 19 is arranged in the sleeve shaft 18, the core shaft 19 is supported by bearings at both ends of the sleeve shaft 18, the core shaft 19 is fixedly mounted on the frame 20 after extending out from the sleeve shaft 18, and the wheels 11 coaxially and fixedly mounted on the inner rotor 6, the outer rotor 4 and the outer rotor 4 all rotate around the core shaft 19.

In addition, the driving mechanism also comprises a wheel brake disc 15 and a brake system 16,

the bicycle comprising the driving mechanism shown in fig. 2 has a pure electric driving mode, a range-extending or speed-increasing mode and a manpower driving energy-saving mode, and the principle of each mode is the same as that of the embodiment shown in fig. 1, and the description is omitted here.

Fig. 3 shows a dual-rotor motor having two inner rotors and a human-electric hybrid drive bicycle drive mechanism including the same. As shown in fig. 3, the motor includes an outer rotor 4, two inner rotors 6, a left inner rotor and a right inner rotor, a housing 13, and a clutch 14 capable of controlling a stopping direction. The outer rotor 4 is arranged in the shell 13 through a bearing group, the inner rotor 6 is arranged in the outer rotor 4 through a bearing group, and the outer rotor 4 and the inner rotor 6 can coaxially and respectively rotate under the support of the bearing groups. Both inner rotors 6 are coaxially rotatable. The left and right coil windings 18 arranged in the outer rotor 4 correspond to the left and right inner rotors 6, and magnetic fields generated by the left and right coil windings 18 when the power is on respectively act on the left and right inner rotors 6 to rotate the same. The housing 13 is mounted to the frame. Between the housing 13 and the outer rotor 4, a clutch 14 with controllable stopping direction is arranged, and the function is the same as that of the embodiment shown in fig. 1 and 2.

The chain wheel 2 on the pedaling mechanism 1 of the bicycle is connected with the chain wheel 17 on the outer rotor 4 through the chain 3. The bicycle comprising the driving mechanism shown in fig. 3 has a pure electric driving mode, a range-extending or speed-increasing mode and a manpower driving energy-saving mode, and the principle of each mode is the same as that of the embodiment shown in fig. 1, and the description is omitted here. However, the present embodiment is characterized in that the two wheels of the bicycle will generate differential when the bicycle turns, and the electric quantity of the left and right coil windings 18 on the outer rotor 4 is adjusted through the vehicle-mounted electric control to adjust the rotating speed of the left and right wheels, so that a differential mechanism with a mechanical structure is not needed. Compared with the two embodiments, the electric bicycle of the embodiment has larger load capacity in double hybrid driving.

The electric bicycle has heavy weight, the installed bicycle shed can further increase the weight of the bicycle, and the weight of people is added, so that the rolling resistance is large when the electric bicycle runs, and in order to realize easy riding, a torque motor 26 is added, and the electric bicycle is shown in fig. 4.

The motor and drive mechanism configuration shown in fig. 4 is substantially the same as the embodiment shown in fig. 1, except that a torque motor 26 is added to the housing 13 to overcome the running resistance. The output shaft of torque motor 26 is provided with gear 19, gear 19 is meshed with coaxial gear 20 mounted on outer rotor 4 of the motor, and the torque generated by torque motor 26 is transmitted to outer rotor 4 through the meshed gear set. In addition, an electrically or manually controlled one-way clutch 21 is coaxially mounted on the outer rotor 4. The first chain wheel 2 on the pedaling mechanism 1 is connected with a second chain wheel 5 which is coaxially arranged with an outer rotor 4 through a first chain 3. The driven meshing wheel of the one-way meshing clutch 21 is coaxially arranged with the third chain wheel 9 and the inner rotor 6, and the driving meshing wheel is coaxially arranged on the outer rotor 4. The third sprocket 9 is connected by a second chain 10 to a fourth sprocket 12 coaxial with the wheel 11. When the one-way meshing clutch 21 is not operated, the outer rotor 4 of the motor is separated from the third chain wheel 9. The operation modes of this embodiment are as follows.

1. Pure electric drive

When pure electric drive is adopted, the torque motor 26 does not work, the one-way meshing clutch 21 is also in a non-meshing state, and the whole transmission chain works as the embodiment shown in the figure 1.

2. Manpower and electric power double-hybrid drive

When the manual and electric double-hybrid driving is adopted, the torque motor 26 is started, and the torque provided by the torque motor counteracts or exceeds the reverse torque applied to the outer rotor 4 by the rotation of the inner rotor 6 of the motor, so that the riding is easy, and the one-way meshing clutch 21 is still in a non-meshing state under the working condition.

3. Manpower-driven energy-saving mode

When the power-saving mode mainly driven by manpower is required to be entered, the motor is turned off, the one-way meshing clutch 21 is adjusted to be in a meshing state, the outer rotor 4 of the motor is meshed with the third chain wheel 9, the torque motor 26 is started to drive the outer rotor 4 to rotate, and meanwhile, the pedal mechanism 1 is pedaled by manpower to drive the outer rotor 4 to rotate, so that the superposition of the two kinds of power is realized. The rotating outer rotor 4 drives the third chain wheel 9 to rotate through the one-way meshing clutch 21, and the third chain wheel 9 drags the fourth chain wheel 12 which is coaxial with the wheel 11 to rotate through the second chain 10, so that the vehicle is driven to run. The torque provided by the torque motor 26 is adjustable in magnitude as long as the rider can easily pedal the pedaling mechanism 1. The torque motor is a motor which mainly works to provide a lasting torque force, can bear long-time locked rotation when providing torque, and has extremely low power consumption as long as no rotation occurs when providing torque.

Fig. 5 shows a human-electric hybrid drive bicycle drive mechanism that is a modification of the embodiment shown in fig. 2, with a drive train similar to the embodiment shown in fig. 2, but incorporating a torque motor 26 and a controllable third-gear intermeshed clutch 22. Either a human or an onboard computer controlled clutch 22 may be employed. The driving wheel 23 of the clutch 22 is mounted coaxially with the sleeve shaft 18 on the inner rotor 6 of the motor, the driven wheel 24 of the clutch 22 is mounted on the inner rotor 6, and the other driven wheel 25 of the clutch 22 is mounted coaxially on the outer rotor 4. The chain wheel 17 is coaxial with the driving wheel 23 of the clutch 22, and the chain wheel 17 is connected with the chain wheel on the pedal mechanism 1 through a chain. Torque motor 26 is coupled to outer rotor 4 through gear sets 20, 21. The gear 20 is mounted on the output shaft of the torque motor 26, and the gear 21 meshed with the gear 20 is coaxial with the chain wheel 17 and the driving wheel 23 of the clutch 22. In addition, the driving mechanism also comprises a brake caliper 15 and a brake disc 16. Several modes of operation of the electric bicycle employing the drive mechanism shown in fig. 5 will be described in detail.

1. Pure electric drive mode

When pure electric drive is adopted, the driving wheel 23 of the controllable three-gear mesh clutch 22 is in a neutral gear; the outer rotor 4 of the motor is driven by electric power to rotate, so as to drive the wheels 11 which are coaxially arranged with the motor to rotate and drive the vehicle to run; when the outer rotor 4 rotates, a reverse rotational thrust generated in the inner rotor 6 is cancelled by a clutch 14 which is installed between the inner rotor 6 and a housing (frame) 13 and has a controllable locking direction, and the inner rotor 6 does not rotate reversely.

2. Manpower and electric power double-hybrid driving mode

When the manual power and electric power double-hybrid driving is adopted, the driving wheel 23 of the controllable three-gear meshing clutch 22 is adjusted to a gear meshed with the driven wheel 24; when electric energy is transmitted to a coil winding in the outer rotor 4 through an electric power transmission line, a magnetic field generated by the coil winding acts on the outer rotor 4 to rotate the outer rotor 4, and the rotating outer rotor 4 drives the wheels 11 to rotate to drive the vehicle to move forwards; meanwhile, the pedal mechanism 1 is pedaled by manpower to drive the inner rotor 6 to rotate, the inner rotor 6 and the outer rotor 4 rotate in the same direction, and the rotating speed of the wheel is the sum of the rotating speed of the outer rotor 4 and the rotating speed of the inner rotor 6, so that double-hybrid power driving is realized. When the outer rotor 4 rotates under electric drive, the thrust of the reverse rotation generated by the inner rotor 6 is offset by the forward rotation torque provided by the torque motor 26, so that the manual riding becomes easier, and the longer electric endurance or higher vehicle speed can be realized.

3. Micro-power superposition manpower riding mode

If the battery is low in electricity or long-distance riding is desired, the driving wheel 23 of the controllable three-gear meshing clutch 22 is switched to a gear meshed with the driven wheel 25; the manual pedal mechanism 1 drives the chain wheel 17 to rotate, and the rotating chain wheel 17 drives the outer rotor 4 to rotate through the driving wheel 23 and the driven wheel 25 which are meshed, so that the wheel 11 is driven to rotate, and pure manual driving running is realized; however, the bicycle is ridden by purely manpower, physical power is consumed, the torque motor 26 is started at the moment, the torque motor drives the outer rotor 4 to rotate through the driving wheel 23 and the driven wheel 25 which are meshed, and superposition of the manual power and the power of the torque motor 26 is achieved. The power provided by the torque motor 26 enables the vehicle to overcome rolling resistance during driving, and according to the data provided by the related documents, the power consumption of the two-wheeled electric vehicle for overcoming the rolling resistance is not more than 50W, namely, the electric energy consumed by the torque motor 26 is very little, so that the electric vehicle ensures that a person can ride easily and for a long time.

It can be seen that the embodiment shown in fig. 5 is different from the embodiment shown in fig. 4 in that the controllable three-gear mesh clutch 22 is used instead of the one-way mesh clutch 21, and the embodiment shown in fig. 5 can realize the superposition of human power and torque motor 26 power without driving the inner rotor and the outer rotor of the motor to rotate together as in the embodiment shown in fig. 4, so that the riding is more light.

The driving mechanism of the electric bicycle provided by the invention superposes the manpower and the driving of the motor by a simple method, so that the vehicle is more electricity-saving and more environment-friendly.