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Speed change device for electric vehicle

A technology for electric vehicles and transmissions, applied in transmission control, control devices, vehicle components, etc., can solve problems affecting driving experience, speed change, etc., and achieve the effect of improving transmission efficiency, better driving experience, and improving shifting efficiency.

Pending Publication Date: 2022-01-21
KYMCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gear ratio of the transmission mechanism 12 is fixed, so it cannot change gears according to different driving habits and driving situations, and the speed range is greatly limited, which affects the driving experience.

Method used

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  • Speed change device for electric vehicle
  • Speed change device for electric vehicle
  • Speed change device for electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0061] refer to figure 2, a first embodiment of the transmission device 3 of the electric vehicle 2 of the present invention, the electric vehicle 2 includes a motor 21 . The speed change device 3 includes an input unit 31 connected to the motor 21, a clutch unit 32 arranged on the input unit 31, an actuating unit 33 for controlling the clutch unit 32, and an input unit 31 connected to the input unit 31. Active output unit 34. The input unit 31 includes a power input shaft 311 that can be rotated by the motor 21, a gear input gear 312 that is fixedly arranged on the power input shaft 311, and a gear that is rotatably arranged on the power input shaft 311 relative to the power input shaft 311. The second gear input gear 313 on the power input shaft 311 . The power input shaft 311 is hollow and forms a sliding slot 314 extending along its axial direction. The first gear input gear 312 and the second gear input gear 313 can be spur gears, helical gears, or a combination there...

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PUM

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Abstract

The invention provides a speed change device for an electric vehicle. The electric vehicle comprises a motor. The speed change device comprises an input unit, a clutch unit, an actuating unit and an output unit. The input unit comprises a power input shaft, a first-gear input gear and a second-gear input gear, wherein the power input shaft can be driven by the motor to rotate, the first-gear input gear is fixedly arranged on the power input shaft, and the second-gear input gear is arranged on the power input shaft. The clutch unit can be controlled to be switched between a first gear state and a second gear state through the actuating unit, so that two different gear ratios are provided, the speed of the electric vehicle can be changed according to different driving habits or driving situations, and a wider speed range and better driving experience are provided.

Description

technical field [0001] The present invention relates to a speed change device, in particular to a speed change device for an electric vehicle. Background technique [0002] refer to figure 1 Generally, an electric vehicle uses an electric motor 11 as a power source, and drives a wheel shaft or a chain through a transmission mechanism 12 . The transmission mechanism 12 includes an input gear 121 arranged at the end of the rotating shaft of the electric motor 11, an output shaft 122 spaced apart from the rotating shaft of the electric motor 11 and capable of driving a chain or a wheel shaft, and an output shaft 122 arranged on the output shaft 122 and connected to the The input gear 121 meshes with the output gear 123 . The transmission mechanism 12 has a simple structure, and the high torque of the electric motor 11 can produce an excellent effect of starting acceleration. However, the gear ratio of the transmission mechanism 12 is fixed, so the gear ratio cannot be change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/32B60K17/06
CPCF16H61/32B60K17/06
Inventor 钟孟成赖建宏
Owner KYMCO