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Dual-motor power assembly for pure electric automobile and operating mode thereof

A pure electric vehicle and powertrain technology, applied in the direction of electric power devices, power devices, vehicle components, etc., can solve the problems of low CVT efficiency, high cost, complex CVT and DCT structures, etc., to improve ride comfort and comfort performance, eliminate power interruptions, and provide efficiency and economy

Inactive Publication Date: 2018-05-04
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional AMT system will produce power interruption and shift shock during the shifting process. The development and application of CVT and DCT reduce or even eliminate the power interruption during the shifting process, but the structure of CVT and DCT is complicated and the cost is high. CVT relatively inefficient

Method used

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  • Dual-motor power assembly for pure electric automobile and operating mode thereof
  • Dual-motor power assembly for pure electric automobile and operating mode thereof
  • Dual-motor power assembly for pure electric automobile and operating mode thereof

Examples

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Embodiment Construction

[0074] Such as figure 1 As shown, a powertrain of a pure electric vehicle dual-motor configuration includes a first drive motor, a second drive motor, a first input gear 103, a second input gear 109, a first gear shaft 108, and a second gear shaft 118, double row gear differential 120, left side transmission half shaft 121, right side transmission half shaft 112, first shift coupling sleeve 106, second shift coupling sleeve 116;

[0075] The first drive motor is an inner rotor motor, and the motor rotor 102 of the first drive motor is hollow or hollow, and is connected with the first input gear 103 through spline fit; as a preference, the first drive motor selects a kind of inner rotor that is hollow permanent magnet synchronous motor with a rated power of 30kw, and motors of other power levels can also be selected according to needs; the first input gear 103 is nested with one side of the double row gear differential 120 casing; the first gear shaft 108 is provided with Thre...

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PUM

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Abstract

The invention relates to a dual-motor power assembly for a pure electric automobile and an operating mode thereof. The dual-motor power assembly comprises a first driving motor, a second driving motor, a first input gear, a second input gear, a first gear shaft, a second gear shaft, a dual-row gear differential mechanism, a left-side transmission half shaft, a right-side transmission half shaft, afirst shift combination sleeve and a second shift combination sleeve, wherein the first driving motor is connected to the first input gear, dual-row gears of the first gear shaft are meshed with dual-row gears of the differential mechanism to form two gear positions, the second driving motor is connected to the second input gear, dual-row gears of the second gear shaft are meshed with the dual-row gears of the differential mechanism to form two gear positions, and the torque of the first gear shaft and the torque of the second gear shaft are coupled in a differential mechanism housing to forma dual-motor multi-gear coupled driving system. The dual-motor power assembly can improve the power performance and economical efficiency of the whole vehicle, eliminate the power interruption problem of shifting and improve the fault tolerance and reliability.

Description

technical field [0001] The invention relates to the technical field of automobile power assembly, in particular to a power assembly of a pure electric vehicle with dual motors and its working mode. Background technique [0002] With the increasingly prominent energy and environmental issues, new energy vehicles have developed rapidly. In the field of pure electric vehicles, the current commercialized power system solutions mostly use a single-motor accelerator or a single-motor plus a two-speed transmission. Although the above two schemes are simple, there are certain problems. The scheme of single-motor accelerator and decelerator cannot make the motor run in a high-efficiency range within the full speed range; the scheme of single-motor plus two-speed transmission ensures the high and low speed of the motor It is running in the high-efficiency range, but there is still a power interruption problem during the shifting process. [0003] In order to improve the power and ec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/12B60K1/02
CPCB60K17/12B60K1/02
Inventor 赵韩邓斌黄康张冰战李维汉
Owner HEFEI UNIV OF TECH
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