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Electric motor vehicle driving system

A drive system and electric vehicle technology, applied in the direction of mechanical drive clutches, multi-ratio transmissions, transmission components, etc., can solve the problems of expensive equipment, complex control technology, and high cost of drive systems, and achieve simple and compact structure and enhanced battery life effect of ability

Inactive Publication Date: 2008-06-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of these drive motors is simple, but the control technology is complex and the equipment is expensive, which makes the cost of the drive system higher than other types

Method used

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  • Electric motor vehicle driving system

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] According to one embodiment of the present invention, as figure 1 As shown, an electric vehicle drive system is provided, which includes an electric motor 1, a dual clutch 3, a low-speed gear set 6, a high-speed gear set 7 and a power output shaft 8, wherein the power of the electric motor 1 is selectively delivered to the low-speed gear set through the dual clutch 3 The gear set 6 or the high-speed gear set 7 are then output through the power take-off shaft 8 .

[0019] The power of the motor 1 can be directly input to the dual clutch 3 through the motor output shaft 2, or can be input to the dual clutch 3 through other transmission mechanisms such as reduction gears.

[0020] In recent years, in order to fundamentally solve the problems caused by AMT cutting off power shifting, a dual-clutch automatic transmission (DCT) has been develo...

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PUM

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Abstract

The invention provides a driving system for electric vehicles, which comprises a motor (1), a dual-clutch (3), a low-speed gear group (6), a high-speed gear group (7) and a power output shaft (8), among which, power of the motor (1) is selected and transported to the low-speed gear group (6) or high-speed gear group (7) through the dual-clutch (3) and then is output through the power output shaft (8). By adopting the dual-clutch, the driving system can easily realize speed change of two gears of the electric vehicles and has a simple and compact structure. The driving system can allow the electric vehicles to keep power during high speed running and enhance persistence of the electric vehicles.

Description

technical field [0001] The invention relates to an electric vehicle driving system. Background technique [0002] With people's emphasis on environmental and energy issues, electric vehicles, as a pollution-free and green means of transportation, have received widespread international attention. my country has also included its development in the focus of the development of the automobile industry. Electric vehicles require the motor to have a small current when it is running stably, and it requires a large starting torque when it is running at full load. In terms of battery capacity, the specific power, specific torque and efficiency of the motor are required to be as high as possible. In order to achieve the best matching of vehicle performance, the power of the motor must also meet the dynamic performance of the vehicle, and meet the performance requirements such as maximum speed, climbing, and full-load acceleration. Electric motors in electric vehicles suffer from a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/02B60K17/08F16D21/06
CPCY02T10/76F16H2200/0021
Inventor 任毅王传福陈广全郭松岳秦丽军罗如忠罗红斌
Owner BYD CO LTD