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Power assembly system of electric vehicle

A powertrain and electric vehicle technology, applied in the direction of electric vehicles, electric power devices, power devices, etc., to achieve the effects of reducing vibration intensity, compact structure, and improving reliability

Inactive Publication Date: 2009-09-30
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an electric vehicle power coaxial power assembly system, which solves the problems of volume, quality, cost and structure of the above-mentioned existing drive motor centrally driven power assembly

Method used

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  • Power assembly system of electric vehicle

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Embodiment Construction

[0017] Depend on figure 1 As shown, the motor 1 is composed of a motor rotor 4 and a motor stator 5, wherein the motor stator 5 is fixed on the vehicle body through a mounting bracket, and the motor rotor 4 transmits power to the sun gear 9 of the reduction box through a mechanical connection 6; The sun gear 9 is the driving part, the planet carrier and the left output shaft are integrated as the driven part, the ring gear 7 is fixed on the gear box casing, the transmission ratio of the gear box = the speed of the sun gear / the speed of the planet carrier = 1 + the number of teeth of the ring gear / the sun gear The number of gear teeth; the input shaft of the differential and the left output shaft are integrated, and the principle of the differential is the same as that of the traditional vehicle.

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Abstract

The present invention provides a power assembly system of electric vehicle, which comprises three main assemblies of a motor (1), a reduction gearbox (2) and a differential mechanism (3). The motor (1) comprises a rotor (4) and a stator (5). The rotor (4) of motor is hollow. A left output shaft of power assembly transmits the power to the outside through the hollow part of rotor (4) of motor. A sun wheel (9) of reduction gearbox (2) receives the power transmitted from the motor. A planet wheel (8) of reduction gearbox, a left output shaft and an output shaft of differential mechanism have an integrated structure. The power is transmitted to the right output shaft by the input shaft of differential mechanism through the differential mechanism. The power assembly system of electric vehicle of the invention has a compact structure, about one half of volume and mass of traditional parallel-axis power assembly, reduced vibration strength of power assembly, and increased stability of power assembly and vehicle.

Description

technical field [0001] The invention relates to a novel electric vehicle power system, which belongs to the technical field of vehicle driving devices. Background technique [0002] Electric vehicles are composed of three parts: electric drive system, power supply system and auxiliary system. The electric drive system includes electronic controllers, power converters, electric motors, mechanical transmissions and wheels. Its function is to efficiently convert the electric energy stored in the battery into the kinetic energy of the wheels, and to convert the kinetic energy of the wheels when the car decelerates and brakes. Kinetic energy is converted into electrical energy and charged to the battery. [0003] The power system includes a power supply, an energy management system and a charger. Its main functions are to provide driving power to the motor, monitor power usage, and control the charger to charge the battery. Auxiliary systems include auxiliary power sources, pow...

Claims

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Application Information

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IPC IPC(8): B60K1/00B60K17/06B60K17/16H02K7/10H02K1/22
CPCY02T10/641F16H2200/0021Y02T10/64
Inventor 林伟义刘艳孙玉玲李陈勇冯勇
Owner CHERY AUTOMOBILE CO LTD