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Electromobile power device

A technology for power plants and electric vehicles, which is applied in wheel transmissions, elastic element transmissions, vehicle components, etc., can solve the problems of shortened life of motors and controllers, increased failure rates, and burnt out of motors and controllers, and achieves improved performance. The effect of cruising range, improving service life and reducing vibration amplitude

Inactive Publication Date: 2017-12-29
重庆铜山天询科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this structure has the disadvantage of small torque and is not suitable for mountain riding
In the case of a large load (such as climbing), this power scheme needs to pass a large current to obtain a large motor output power, which causes the motor and the controller to overheat easily, which in turn causes the motor and the controller to overheat. The lifespan is shortened, the failure rate rises sharply, and even the accidents where the motor and controller are directly burned
Therefore, despite more than ten years of development, mountain electric bicycles based on the commonly used in-wheel motor technology still cannot gain market approval.
[0004] In addition, in the case of relatively small deceleration, there are still schemes in the prior art to adopt chain drive or belt drive. However, the use of chain drive has inherent problems such as energy consumption, noise, and vibration, while the use of belt drive has energy consumption. The big problem is that its energy consumption is generally 5-10 times that of gear transmission, so for electric bicycles with limited energy reserves, these two solutions are lackluster and not advisable

Method used

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Experimental program
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Effect test

Embodiment 1

[0022] An electric vehicle power device, comprising a motor and a reduction box connected to the output end of the motor, the output shaft 1 of the reduction box is installed in the reduction box through a positioning bearing, and an output gear 2 is installed on the output shaft 1 through a positioning bearing , the outer side of the output gear 2 meshes with the transmission gear on the upper transmission shaft in the reduction box, and the inner ratchet gear 21 is provided on the inner side, and the position corresponding to the output gear 2 on the output shaft 1 is provided with a pawl 3; The fixed end of the ratchet 3 is installed on the output shaft 1 through the fixed column 11 arranged on the output shaft 1, and the movable end is matched with the inner ratchet teeth 21; a ratchet reset mechanism is also provided, including winding The return torsion spring 5 on the fixed column 11 and below the pawl 3, one end of the return torsion spring 5 is positioned by the limit ...

Embodiment 2

[0027] On the basis of any solution in Embodiment 1, at least one pawl 3 is detachably installed on the output shaft 1, and the free end of the pawl 3 is provided with a V-shaped notch 33, and the notch 33 connects the The free end is divided into two claw toes 32, wherein the outer claw toe 32 cooperates with the inner ratchet teeth 21; the ratchet 3 is left-right symmetrical.

[0028] After a period of use, the ratchet will inevitably wear out. Since the two claws on the ratchet are symmetrical and the ratchet can be disassembled, the ratchet can be turned left and right and installed so that the unworn claw toes cooperate with the inner ratchet teeth , In this way, not only the maintenance is convenient, but also the life of the device is extended, which effectively saves the cost.

[0029] Further, the output shaft 1 is uniformly provided with a plurality of pawl installation holes along the circumferential direction.

[0030] The pawl installation hole is used to hinge t...

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PUM

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Abstract

The invention discloses an electric vehicle power device, which comprises a motor and a reduction box. The output shaft of the reduction box is installed in the reduction box through a positioning bearing, and an output gear is sleeved on the output shaft. The transmission gear on the transmission shaft meshes, and the internal ratchet teeth are provided on the inner side, and a pawl is provided on the position corresponding to the output gear on the output shaft; the fixed end of the pawl is installed on the output shaft through a fixed column, and the movable end is in contact with the internal ratchet teeth. Cooperate; there is also a pawl reset mechanism, including a torsion spring wound on the fixed column, one end of the torsion spring is positioned by the limit baffle on the output shaft, and the other end is twisted upward to lean against the limit part of the pawl. The invention effectively reduces the energy consumption of the electric vehicle in the sliding state through the one-way transmission mechanism; through the pawl reset mechanism, it facilitates the installation and disassembly of the pawl and the reset torsion spring; through the symmetrical claw toes, the service life is prolonged and the maintenance is convenient ,cut costs.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an electric vehicle power device. Background technique [0002] The powertrains of existing electric bicycles and electric motorcycles basically adopt hub motor schemes, and their power comes from motors installed in the hub. Taking the most common brushless motor as an example, this wheel hub motor is composed of built-in brushless motor core, planetary friction roller, overload clutch, output flange, end cover, hub shell and other components, and belongs to the inner rotor motor. Its power can be directly output to the power wheel. [0003] However, this structure has the disadvantage of small torque and is not suitable for mountain riding. In the case of a large load (such as climbing), this power scheme needs to pass a large current to obtain a large motor output power, which causes the motor and the controller to overheat easily, which in turn causes ...

Claims

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Application Information

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IPC IPC(8): B62M11/04B62M21/00B62M23/00
CPCB62M11/04B62M21/00B62M23/00
Inventor 石磊敬西
Owner 重庆铜山天询科技有限公司