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Motor vehicle drive agency and its shift speed change method

A driving mechanism and electric vehicle technology, which is applied to vehicle gearboxes, vehicle components, multi-ratio transmissions, etc., can solve problems such as space occupation, power loss, and increased mechanism weight, so as to improve vehicle speed, light weight, and The effect of avoiding power loss

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

[0004] However, the disadvantage of this driving mechanism is that the motor and the transmission must be connected through a clutch, therefore, not only takes up space, increases the weight of the whole mechanism, but also causes power loss during power transmission.

Method used

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  • Motor vehicle drive agency and its shift speed change method
  • Motor vehicle drive agency and its shift speed change method
  • Motor vehicle drive agency and its shift speed change method

Examples

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Embodiment Construction

[0013] Below, the present invention will be described in detail in conjunction with the accompanying drawings.

[0014] Such as figure 2 and 3 As shown, the electric vehicle driving mechanism provided by the present invention includes an electric motor 5 and a non-reverse transmission. The structure of the non-reverse speed changer is well known to those skilled in the art, such as a two-shaft speed changer or a three-shaft speed changer can be used, and the two-shaft speed changer is taken as an example here, which mainly includes an input shaft 6, an output shaft 7, multiple Group gear 8, and gear shift actuator 9. Each group of gears 8 includes a driving gear 13 and a driven gear 14 that mesh with each other. The driving gear 13 of each group of gears 8 is assembled on the input shaft 6, and the driven gear 14 of each group of gears 8 is assembled on the input shaft. on the output shaft 7. The gear shift actuator 9 is used to back up or engage gears by decoupling or co...

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Abstract

The invention relates to an electric vehicle diving mechanism and a shift and speed variation method thereof. The driving mechanism consists of a motor and a non-reverse gear transmission. The non- -reverse gear transmission comprises an input shaft, an output shaft, a plurality of gear groups and a speed variation actuating device. A drive gear of each gear group is arranged on the input shaft and a driven gear of each gear group is arranged on the output shaft. The speed variation actuating device is used for reversing a gear or engaging a gear, among which, the motor is connected with the input shaft of the non-reverse gear transmission. The driving mechanism also includes a control device which is electrically connected with the motor and the speed variation actuating device to control the electricity as well as the size and direction of input voltage of the motor and also control the speed variation actuating device to carry out gear reversing and gear engaging. The driving mechanism not only raises vehicle running speed in a large extent due to the easiness and convenience in speed variation, but also saves a clutch, and thus the spatial arrangement of entire mechanism is simple with light weight. At the same time, power loss in power transfer is avoided.

Description

technical field [0001] The present invention relates to an electric vehicle, more specifically, to an electric vehicle driving mechanism and a gear shifting method thereof. Background technique [0002] At present, people pay more and more attention to the protection of the environment and the effective and reasonable use of energy. Therefore, electric vehicles with high efficiency, energy saving and environmental protection have gradually become the development trend of the automobile industry. Traditional electric vehicles do not need to set multiple gears because the motor itself can be adjusted in speed and can be started with a load, so there is no need to set a clutch. However, if you want this traditional electric vehicle to run at high speed, the motor must have a high speed. However, the characteristic of the motor is to output constant power at high speed, so the torque that the motor can provide at this time is very limited. Therefore, this traditional electric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/08B60W10/10B60W30/18B60K17/00B60W10/111B60W30/19
CPCF16H2200/0021
Inventor 王传福罗如忠罗红斌任毅牛茹茹韩争光杨胜麟陈广全
Owner BYD CO LTD
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