CN114684319A - Electric two-wheeled vehicle power system and electric two-wheeled vehicle having the same - Google Patents

Abstract

The invention provides an electric two-wheel vehicle power system and an electric two-wheel vehicle with the same. The power system of the electric two-wheel vehicle has the advantages of simple structure, low cost and higher efficiency.

Description

Electric two-wheeled vehicle power system and electric two-wheeled vehicle having the same

technical field

The invention relates to the technical field of electric two-wheeled vehicles, in particular to an electric two-wheeled vehicle power system and an electric two-wheeled vehicle having the same.

Background technique

At present, the main power systems used in electric two-wheeled vehicles include direct drive of in-wheel motors, high-speed motors with deceleration devices and chains or belts for drive. In the direct drive mode of the in-wheel motor, due to the limitation of use conditions, the motor speed is generally low, the motor speed is the same as the wheel speed, the motor speed is low, the volume is large, and the cost is high, so it is difficult to reduce the cost of the power transmission part.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electric two-wheeled vehicle power system and an electric two-wheeled vehicle having the same. The electric two-wheeled vehicle power system has a simple structure, low cost and high efficiency.

An example of the present invention provides an electric two-wheeled vehicle power system, including a motor, a first gear, a second gear and a wheel, the first gear is connected to the motor, the second gear is connected to the wheel, and the The rotation speed of the motor is higher than the rotation speed of the wheel, and the motor transmits power to the wheel through the first gear and the second gear.

Further, the number of teeth of the first gear is smaller than the number of teeth of the second gear.

Further, the first gear meshes with the second gear.

Further, the motor is provided with a deceleration device, the output shaft of the motor is connected to the input end of the deceleration device, and the first gear is arranged on the output shaft of the deceleration device.

Further, the electric two-wheeled vehicle power system further includes a third gear, the third gear is arranged between the first gear and the second gear, and the first gear is connected to the third gear by the third gear. Power is transmitted to the second gear.

Further, there are multiple third gears, the power of the first gear will be transmitted to the second gear through the multiple third gears, and the third gear does not change the relationship between the first gear and the second gear. the transmission ratio between the second gears.

Further, the inter-gear transmission of the first gear and the second gear is parallel shaft transmission, staggered shaft transmission or intersecting shaft transmission.

Further, the transmission of the first gear and the second gear is pin-tooth transmission, worm gear transmission or movable tooth transmission.

Further, there are a plurality of the motors and the first gears, and each of the motors is powered with the second gear through one of the first gears.

Further, the number of poles of the motor is 4-40, and the number of slots of the motor is 6-72.

Further, the electric two-wheeled vehicle power system further includes a charging interface and a power battery, the charging interface is electrically connected to the power battery, the power battery is connected to the motor, and the power battery is 200V-1000V power battery.

The present invention also provides an electric two-wheeled vehicle, including the above-mentioned electric two-wheeled vehicle power system

To sum up, in the present invention, a motor with a high rotational speed is used, and the rotational speed of the motor is higher than the rotational speed of the wheel through the arrangement of the first gear and the second gear. Due to the increase of the motor speed, the power of the power system can be increased, the volume of the motor can be reduced, and the cost of the motor can be significantly reduced. Further, through the arrangement of the first gear and the second gear, the cost is further reduced by means of gear transmission.

The above description is only an overview of the technical solution of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present invention more obvious and easy to understand , the following specific preferred embodiments, and in conjunction with the accompanying drawings, are described in detail as follows.

Description of drawings

FIG. 1 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a second embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a third embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a fourth embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a fifth embodiment of the present invention.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

The purpose of the present invention is to provide an electric two-wheeled vehicle power system and an electric two-wheeled vehicle having the same. The electric two-wheeled vehicle power system has a simple structure, low cost and high efficiency.

FIG. 1 is a schematic structural diagram of an electric two-wheeled vehicle power system provided by the first embodiment of the present invention. As shown in FIG. 1 , the electric two-wheeled vehicle power system provided by the first embodiment of the present invention includes a motor 10, a first gear 21, The second gear 22 and the wheel 30, the first gear 21 is connected to the output shaft of the motor 10 as an output gear, preferably arranged on the output shaft of the motor 10, and the second gear 22 is connected to the wheel 30 as an input gear, preferably arranged at On the rotating shaft of the wheel 30, the first gear 21 and the second gear 22 are connected in power. In the present invention, the rotation speed of the motor 10 is higher than the rotation speed of the wheel 30, and the motor 10 transmits the power to the wheel through the first gear 21 and the second gear 22. on wheels 30.

In this embodiment, the motor 10 with a high rotation speed is used, and the rotation speed of the motor 10 is higher than the rotation speed of the wheel 30 through the arrangement of the first gear 21 and the second gear 22 . Due to the increase of the rotational speed of the motor 10 , the power of the power system can be increased, the volume of the motor 10 can be reduced, and the cost of the motor 10 can be significantly reduced. Further, through the arrangement of the first gear 21 and the second gear 22, the cost is further reduced by means of gear transmission.

Further, in this embodiment, the number of teeth of the first gear 21 is smaller than the number of teeth of the second gear 22 , that is, the motor 10 only through the transmission between the first gear 21 and the second gear 22 , the rotation speed of the motor 10 is adjusted. reduce. More specifically, the first gear 21 directly meshes with the second gear 22 .

Further, in this embodiment, the rotating shaft of the first gear 21 and the output shaft of the motor 10 are arranged coaxially, and the first gear 21 can be fixedly connected with the output shaft of the motor 10, or can be integrally formed with the output shaft; The rotating shaft of 22 and the rotating shaft of the wheel 30 are coaxially arranged, and the second gear 22 can be fixedly connected with the rotating shaft of the wheel 30 , or can be integrally formed with the rotating shaft of the wheel 30 .

Further, the first gear 21 and the second gear 22 may be parallel shaft gears, cross shaft gears or intersecting shaft gears.

Further, in this embodiment, the motor 10 may be directly disposed on the wheel axle, or a component that is relatively stationary relative to the wheel axle. When the motor 10 is on the wheel axle, the diameter of the stator and rotor of the motor is smaller than the rim radius, the number of poles of the motor is 4-40, and the number of motor slots is 6-72.

FIG. 2 is a schematic structural diagram of an electric two-wheeled vehicle power system provided by a second embodiment of the present invention. As shown in FIG. 2 , the electric two-wheeled vehicle power system provided by the second embodiment of the present invention is basically the same as the first embodiment. The difference is that in this embodiment, the motor 10 is provided with a deceleration device 40 , the output shaft of the motor 10 is connected to the input end of the deceleration device 40 , and the first gear 21 is arranged on the output end of the deceleration device 40 .

The first gear 21 is arranged on the deceleration device 40 through the setting of the deceleration device 40, which can further reduce the rotational speed of the motor 10, that is, on the premise of meeting the national standards and the needs of the vehicle itself, the motor can be further improved 10 rpm.

Further, in this embodiment, the output shaft of the reduction gear 40 and the first gear 21 are arranged coaxially.

FIG. 3 is a schematic structural diagram of the electric two-wheeled vehicle power system provided by the third embodiment of the present invention. As shown in FIG. 3 , the electric two-wheeled vehicle power system provided by the third embodiment of the present invention and the first and second embodiments The example is basically the same, the difference is that it is also provided with a third gear 23, and the third gear 23 is arranged between the first gear 21 and the second gear 22, that is, the first gear 21 and the second gear 22 are both Meshing with the third gear 23, the power is transmitted to the second gear 22 through the first gear 21 and the third gear 23 in sequence.

By setting the third gear 23 , the rotational speed of the motor 10 can be further reduced, that is, the rotational speed of the motor 10 can be further increased on the premise of meeting national standards and the needs of the vehicle itself. It can be understood that there can be a plurality of third gears 23 , the plurality of third gears 23 are arranged between the first gear 21 and the second gear 22 , and the arrangement of the third gear 23 does not change the first gear 21 and the second gear 22 transmission ratio between.

Further, in this embodiment, the number of teeth of the first gear 21 , the second gear 22 and the third gear 23 increases sequentially. The rotating shaft of the third gear 23 can be fixedly connected with the motor 10 , that is, it can be directly fixed on the motor 10 or fixed on the reduction gear 40 of the motor 10 .

Similarly, the transmissions of the first gear 21 , the second gear 22 and the third gear 23 can all be parallel shaft transmission, cross shaft transmission or intersecting shaft transmission.

Further, in other embodiments, the transmission of the first gear 21 , the second gear 22 and the third gear 23 may be pin gear transmission, worm gear transmission or movable tooth transmission.

FIG. 4 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a fourth embodiment of the present invention. As shown in FIG. 4 , the power system of the electric two-wheeled vehicle provided by the fourth embodiment of the present invention is basically the same as that of the first three embodiments, and the difference lies in that there can be multiple motors 10 and first gears 21 , such as two Each of the motors 10 can be powered with the second gear 22 through a first gear 21 .

It should be noted that, in FIG. 4 , a structure in which both motors 10 are arranged on one side of the wheel 30 is shown, and in other embodiments, they may also be arranged on both sides of the wheel 30 .

FIG. 5 is a schematic structural diagram of a power system of an electric two-wheeled vehicle according to a fifth embodiment of the present invention. As shown in FIG. 5 , the structure of the electric two-wheeled vehicle power system provided by the fifth embodiment of the present invention is basically the same as that of the first four embodiments, and the difference is that the electric two-wheeled vehicle power system further includes a charging interface 50 And the power battery 60 , the charging interface 50 is electrically connected with the power battery 60 . In the present invention, the power battery 60 is a 200-1000V high-voltage power battery 60 , and the power battery 60 is connected with the motor 10 to provide power for the motor 10 .

In this embodiment, the power system of the electric two-wheeled vehicle adopts a high-voltage power battery 60 of 200-1000V. By using the high-voltage power battery 60 on the electric two-wheeled vehicle, the loss of power supply is less. At the same time, due to the power The voltage of the battery 60 is relatively high, and a higher power power system can be used when supplying power, so that the rotation speed of the motor 10 can be further increased, the volume of the motor 10 and the control system of the motor 10 can be reduced, and the cost can be reduced.

Further, the medium and high voltage power battery 60 of the present invention may be 220V, 300V, 360V, 384V, 400V, 500V, 600V, 800V or 1000V, etc.

Further, in this embodiment, the charging interface 50 includes a first charging interface 51 for charging the DC charging pile, a second charging interface 52 for charging the AC charging pile, and/or a third charging interface 53 for charging with commercial power. . That is, the above three interfaces may exist at the same time, or one or two may exist. The first charging port 51 , the second charging port 52 and/or the third charging port 53 are all connected to the power battery 60 . When three interfaces exist at the same time, or there are two at the same time, the above-mentioned settings can be compatible with various charging methods. Since the power supply system uses a high-voltage power battery 60, this can make the electric two-wheeled vehicle also use the car. charging station for charging.

Further, in this embodiment, a rectification circuit 54 is further provided between the second charging interface 52 and/or the third charging interface 53 and the power battery 60 to rectify the alternating current.

Further, in this embodiment, a control switch 55 is provided between each charging port 50 and the power battery 60 to control the connection and disconnection between each charging port 50 and the power battery 60 respectively. When the DC charging pile is used to supply power to the electric two-wheeled vehicle, the control switch 55 between the first charging interface 51 and the power battery 60 can be closed, and the other control switches 55 can be opened, so that the first charging interface 51 and the power The battery 60 is connected, and the power battery 60 can be charged through the DC charging pile at this time. When charging with an AC charging pile or commercial power, it is only necessary to close the corresponding control switch 55 and open the other control switches 55 . Through the above arrangement, the safety during charging can be ensured.

Further, in this embodiment, each charging interface 50 is also provided with a charging identification circuit 56 , the charging identification circuit 56 and the control switch 55 are connected to the control unit 57 , and the charging identification circuit 56 can be used for charging connected to the power source. The interface 50 is identified, when one of the charging interfaces 50 is connected to the power supply, the control unit 57 controls the control switch 55 at the charging interface 50 to be closed, and the control switches 55 at the other charging interfaces 50 are turned off, so that the system can work normally Charge.

More specifically, the control switch 55 may be a relay switch.

To sum up, in the present invention, a high-speed motor 10 is used, and through the arrangement of the first gear 21 and the second gear 22, the rotation speed of the motor 10 is higher than the rotation speed of the wheel 30. The gear 21 and the second gear 22 reduce the rotational speed. Due to the increase of the rotational speed of the motor 10 , the power of the power system can be increased, the volume of the motor 10 can be reduced, and the cost of the motor 10 can be significantly reduced. Further, through the setting of the reduction gear set, the power is transmitted from the high-speed motor 10 to the wheel 30, and the transmission efficiency is high and the cost is low. Further, the power system uses a high-voltage power battery 60 of 200-1000V. By using the high-voltage power battery 60 on the electric two-wheeled vehicle, the loss of power supply is less. At the same time, the voltage of the power battery 60 is relatively high. , a higher power motor 10 can be used when supplying power, which reduces the volume of the motor 10 and the control system of the motor 10 and reduces the cost. Further, through the arrangement of multiple charging interfaces 50, the power supply system can be adapted to various charging modes, which is convenient and quick.

The present invention also provides an electric two-wheeled vehicle, which includes the above-mentioned electric two-wheeled vehicle power system. For other technical contents of the electric two-wheeled vehicle, please refer to the prior art, which will not be repeated here.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. The technical personnel, within the scope of the technical solution of the present invention, can make some changes or modifications by using the technical content disclosed above to be equivalent embodiments of equivalent changes, provided that they do not depart from the technical solution content of the present invention, according to the technical solution of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (12)

1. An electric two-wheeled vehicle power system, characterized in that it comprises a motor, a first gear, a second gear and a wheel, the first gear is connected with the motor, and the second gear is connected with the wheel, The rotation speed of the motor is higher than the rotation speed of the wheel, and the motor transmits power to the wheel through the first gear and the second gear. 2 . The electric two-wheeled vehicle according to claim 1 , wherein the number of teeth of the first gear is smaller than the number of teeth of the second gear. 3 . 3 . The power system of an electric two-wheeled vehicle according to claim 1 , wherein the first gear meshes with the second gear. 4 . 4 . The electric two-wheeled vehicle power system according to claim 1 , wherein the motor is provided with a deceleration device, the output shaft of the motor is connected to the input end of the deceleration device, and the first gear arranged on the output shaft of the reduction gear. 5 . The electric two-wheeled vehicle power system according to claim 1 , wherein the electric two-wheeled vehicle power system further comprises a third gear, and the third gear is arranged between the first gear and the first gear. 6 . Between the two gears, the first gear transmits power to the second gear through the third gear. 6 . The power system of an electric two-wheeled vehicle according to claim 5 , wherein there are multiple third gears, and the power of the first gear is transmitted to the first gear through a plurality of the third gears. 7 . Two gears, the third gear does not change the transmission ratio between the first gear and the second gear. 7. The electric two-wheeled vehicle power system according to claim 1 or 5, wherein the inter-gear transmission of the first gear and the second gear is parallel shaft transmission, staggered shaft transmission or intersecting shaft transmission. 8. The electric two-wheeled vehicle power system according to claim 1 or 5, wherein the transmission of the first gear and the second gear is pin-tooth transmission, worm gear transmission or movable tooth transmission. 9 . The power system of an electric two-wheeled vehicle according to claim 1 , wherein the motor and the first gear are multiple, and each of the motors is connected to the motor through one of the first gears. 10 . The second gear is power-connected. 10 . The electric two-wheeled vehicle power system according to claim 1 , wherein the number of poles of the motor is 4-40, and the number of slots of the motor is 6-72. 11 . 11. The electric two-wheeled vehicle power system according to claim 1, wherein the electric two-wheeled vehicle power system further comprises a charging interface and a power battery, and the charging interface is electrically connected to the power battery, so The power battery is connected to the motor, and the power battery is a power battery of 200V-1000V. 12. An electric two-wheeled vehicle, characterized by comprising the electric two-wheeled vehicle power system according to any one of claims 1 to 11.

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