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Two-shift transmission, electric drive system and electric vehicle

A transmission and drive train technology, applied in multi-gear ratio transmissions, transmission elements, electric components, etc., can solve problems such as reducing driving comfort, and achieve the effect of basically interruption of traction, compact structure, and no interruption of traction

Inactive Publication Date: 2019-03-05
FEV EURO GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another challenge is the load shiftability of the transmission, as torque interruption during gear changes in purely electric vehicles reduces driving comfort and is not desired by the end user

Method used

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  • Two-shift transmission, electric drive system and electric vehicle
  • Two-shift transmission, electric drive system and electric vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] figure 1 An electric drive train 2 is shown. The electric drive train 2 has an electric motor 4 and a two-speed transmission 6 . The two-speed transmission 6 is connected on the input side to the electric motor 4 . The two-speed transmission 6 is connected on the output side to the wheels 8 , 10 of the electric vehicle to be driven. The electric motor 4 and the wheels 8 , 10 are not part of the two-speed transmission 6 according to the invention.

[0027] The two-speed transmission 6 has an input-side dual clutch 12 with a first clutch 14 and a second clutch 16 .

[0028] The first clutch 14 is configured for coupling and decoupling the first input shaft 20 with the electric motor 4 . The second clutch 16 is configured for coupling and decoupling the second input shaft 22 with the electric motor 4 . The first input shaft 20 and the second input shaft 22 are arranged coaxially. The second input shaft 22 is a hollow shaft 22 . A section 24 of the first input shaft ...

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Abstract

The present invention relates to a two-shift transmission for an electric drive system, and a double clutch having an input side. The double clutch has a first clutch and a second clutch, the first clutch is configured to perform coupling and decoupling of a first input shaft and an electric motor, the second clutch is configured to perform coupling and decoupling of a second input shaft and an electric motor, the first input shaft and the second input shaft are coaxially arranged, the second input shaft is a hollow shaft, and at least one section, assigned to the double clutch, of the first input shaft is integrally encircled by the second input shaft; the two-shift transmission just has two shifts, the first shift of the two shifts has a drive ratio better than that of the second shift in the two shifts, the first input shaft is coupled with the drive shaft through a first spur gear grade, the second input shaft is coupled with the drive shaft through a second spur gear grade, and the drive is coupled with a differential mechanism of an output side through a third spur gear grade.

Description

technical field [0001] The present invention relates to a two-speed transmission, an electric drive train, and an electric vehicle. Background technique [0002] A purely electric vehicle requires fewer gears than a conventional combustion engine-driven drivetrain, since the electric motor already provides torque from standstill and has a wider speed range than a combustion engine . However, single-speed transmissions are by no means sufficient for electrically driven vehicles. For example, purely electrically driven transport vehicles are known, the maximum speed of which is limited to only 80 km / h. [0003] In cooperation with the electric motor, a multi-speed transmission has the advantage of greater final vehicle speed and more frequent drives in the high efficiency range of the electric motor characteristic curve. The drive of the electric machine in the high efficiency range makes it possible to achieve a greater vehicle range with the same available battery capacit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H37/08H02K7/116
CPCF16H37/08H02K7/116B60K1/00B60K17/08F16H3/006B60K2001/001F16H2200/0021F16H2200/0034
Inventor 格雷翁·海伦布罗赫英戈·施泰因贝格扬·诺瓦克
Owner FEV EURO GMBH