Three-gear planet speed change mechanism suitable for electric vehicle

A planetary transmission, electric vehicle technology, applied in the direction of vehicle gearbox, vehicle components, transmission components, etc., can solve the problems of complex driving road conditions, large driving power, and the output characteristics of the motor cannot be satisfied at the same time, and achieves convenient compact design and structure. Simple, effect of reducing motor speed requirements

Active Publication Date: 2017-05-31
CHINA NORTH VEHICLE RES INST
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  • Application Information

AI Technical Summary

Problems solved by technology

However, for large vehicles, such as buses, trucks, armored vehicles, etc., their own mass is relatively large, the driving power required is large, and the driving conditions are complex. The transmission with two to three gears can not only expand the transmission range of the motor, but also has a simple and compact structure and is easy to arrange

Method used

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  • Three-gear planet speed change mechanism suitable for electric vehicle
  • Three-gear planet speed change mechanism suitable for electric vehicle
  • Three-gear planet speed change mechanism suitable for electric vehicle

Examples

Experimental program
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Effect test

Embodiment

[0033] Such as figure 1 and figure 2 As shown, this embodiment provides a three-speed planetary transmission mechanism suitable for electric vehicles, including: two planetary rows, two brakes and a clutch;

[0034] The first planetary row PG1 is a single planetary row with internal and external meshing, which is composed of the first sun gear S1, the first planetary carrier C1, the first ring gear R1 and 4 first planetary gears P1, and the 4 first planetary gears P1 are supported on the On a planet carrier C1, the first planetary gear P1 is externally meshed with the first sun gear S1 and internally meshed with the first ring gear R1.

[0035] The second planetary row PG2 is also a single planetary row with internal and external meshing, which is composed of the second sun gear S2, the second planetary carrier C2, the second ring gear R2 and 4 second planetary gears P2, and the 4 second planetary gears P2 are supported on On the second planet carrier C2, the second planeta...

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Abstract

The invention belongs to the technical field of machine transmission, and particularly relates to a three-gear planet speed change mechanism suitable for an electric vehicle. The speed change mechanism is composed of two planet rows, two gear-shifting brakes and one gear-shifting clutch. The first planet row and the second planet row are both internal and external meshed single planet rows; the first planet row is composed of a first sun gear, a first planet carrier, a first gear ring and four first planet wheels; and the second planet row is composed of a second sun gear, a second planet carrier, a second gear ring and four second planet wheels. The three-gear planet speed change mechanism has the beneficial effects that the transmission scope is large, the gear order ratio is relatively large, and the motor rotating speed requirement under the high-speed working condition is reduced through an overgear while the requirement of the electric vehicle for climbing an abrupt slope is met; and in addition, the transmission scheme is exquisite, the structure is simple, and the compact design is facilitated.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a three-speed planetary transmission mechanism suitable for electric vehicles. Background technique [0002] Electric vehicles have become one of the main development directions of current vehicles because of their advantages such as energy saving and environmental protection, good power performance, stable starting, infinitely variable speed, and recyclable braking energy. Small cars have low power levels and simple road conditions, and the general power characteristics of electric motors can meet their driving needs, so most small cars have canceled the transmission. However, for large vehicles, such as buses, trucks, armored vehicles, etc., their own mass is relatively large, the driving power required is large, and the driving conditions are complex. The transmission with two to three gears can not only expand the transmission range of the motor, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/46
CPCF16H3/46F16H2200/0021F16H2200/0039F16H2200/2007F16H2200/2038
Inventor 李春明张静刘亚成唐沛李晋刘树成邢庆坤陈回李慎龙张鹤尹华兵
Owner CHINA NORTH VEHICLE RES INST
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