Dual-motor high-low speed interval power system

A power system, high and low speed technology, applied in the field of transmission system, can solve problems such as cost increase, excess performance of electric drive system, weak acceleration of automobiles, etc.

Pending Publication Date: 2020-11-13
GUANGZHOU XINYU POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantages are also very prominent: First, the single-stage transmission makes the motor always run at a fixed speed ratio when the car starts to the highest speed, and the output torque of the motor in the middle and rear stages of the performance drops sharply with the increase of the speed, causing the car to run at a high speed. Acceleration is weak when driving at high speed, and the entire electric dr...

Method used

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  • Dual-motor high-low speed interval power system
  • Dual-motor high-low speed interval power system
  • Dual-motor high-low speed interval power system

Examples

Experimental program
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Embodiment 2

[0033] The adjustment of the braking mechanism in Embodiment 2 is actually the braking of the ring gear G3, and the braking mechanism of Embodiment 1 can be selected according to the actual situation.

[0034] Such as image 3 As shown, in embodiment 3, on the basis of embodiment 2, the following changes can be made to the power system of the dual-motor high and low speed range: the braking method of the ring gear G3 is the same as that of embodiment 2. Of course, the system of embodiment 1 can also be used. dynamic form. Cancel the differential gear assembly in the power system in the high and low speed range of the dual motors, cancel the intermediate shaft S4, the second input gear G10, and the output gear S6, and at the same time, increase the output shaft S7. The motor gear G7 is externally meshed with the first input gear G5, the output shaft S7 is fixedly connected with the first input gear G5, the output shaft S7 is fixedly connected with the drive shaft S8 outside th...

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Abstract

The invention discloses a dual-motor high-low speed interval power system. A first motor drives a planetary mechanism; the planetary mechanism and/or a second motor drive/drives a first input gear; the first input gear drives a differential mechanism or a drive axle to output power; power output of a vehicle is achieved by superposing the second motor on the basis that the first motor drives the planetary mechanism, the double motors can work independently to achieve multi-speed-stage driving, the acceleration performance can be guaranteed through combined complementation, power arrangement ismore flexible, energy distribution is more reasonable, and the energy saving performance and the power performance are both considered.

Description

technical field [0001] The invention belongs to the field of vehicle transmission, and in particular relates to a transmission system in which dual motors are jointly driven to generate high-low speed and wide-range output power. Background technique [0002] Pure electric vehicles are an important direction for the development of my country's automobile industry. In the past ten years, not only traditional car companies have continuously launched pure electric vehicles, but many new energy car companies have also joined the competition. The technical threshold of pure electric vehicles is lower than that of traditional fuel vehicles. After all, the core of traditional fuel vehicles is the engine and transmission, and the core technology and patent barriers of these two have been firmly controlled by foreign car companies. [0003] At the beginning, the driving scheme of pure electric vehicles was single motor + single-stage transmission. The advantages of this scheme are ea...

Claims

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Application Information

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IPC IPC(8): B60K17/04B60K17/16B60K1/02
CPCB60K1/02B60K17/046B60K17/165
Inventor 梁欢文王豫陈军何思杰
Owner GUANGZHOU XINYU POWER TECH CO LTD
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