Pure electric two-speed transmission

A transmission and pure electric technology, applied in vehicle gearboxes, motor vehicles, transmission components, etc., can solve problems such as high cost, difficult control, and low transmission efficiency of the whole vehicle

Inactive Publication Date: 2017-02-22
CHONGQING TSINGSHAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the fixed speed ratio of the reducer of the traditional pure electric transmission, the transmission efficiency of the whole vehicle is low
The pure electric two-speed transmission with increased gears to two gears can solve the above-mentioned problem of low transmission efficiency of the whole vehicle
[0003] At present, a common pure electric two-speed transmission, incl...

Method used

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  • Pure electric two-speed transmission

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Embodiment Construction

[0010] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0011] see figure 1 , the pure electric two-speed transmission of the present invention includes an input shaft 1, a speed reducer 6, an output shaft 7 and a brake 8, and a planetary mechanism composed of a sun gear 4, a planetary gear 3, a ring gear 5 and a planetary carrier 2, and the planetary The frame 2 is fixedly assembled on the input shaft 1, the sun gear 4 is fixedly assembled on the output shaft 7, and the right end of the output shaft 7 is fixedly connected with the speed reducer 6, by figure 1 It can be seen that the present invention also includes a one-way clutch 9 through which the right end of the input shaft 1 and the left end of the output shaft 7 are connected, and the ring gear 5 of the planetary mechanism is connected with the brake 8 . In this way, the present invention can realize the shifting function by only using on...

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Abstract

The invention provides a pure electric two-speed transmission. The pure electric two-speed transmission comprises an input shaft (1), a reducer (6), an output shaft (7) and a brake (8), and a planetary mechanism which comprises a sun gear (4), a planet gear (3), a gear ring (5) and a planet carrier (2), wherein the planet carrier (2) is fixedly assembled to the input shaft (1), the sun gear (4) is fixedly assembled to the output shaft (7), and the right end of the output shaft (7) is fixedly connected with the reducer (6), the pure electric two-speed transmission is characterized by further comprising a one-way clutch (9), the right end of the output shaft (1) is connected with the left end of the output shaft (7) through the one-way clutch (9), and the gear ring (5) of the planetary mechanism is connected with the brake (8). According to the invention, gears can be shifted only by using one one-way clutch 9 and one brake 8, and one one-way clutch 9 and one brake 8 are only required to be controlled when the gears are shifted, so that the control difficulty is smaller.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a pure electric two-speed transmission. Background technique [0002] Pure electric vehicles are a kind of clean energy vehicles. With the vigorous promotion of energy saving and emission reduction, pure electric vehicles have become a major development trend. Although the traditional pure electric transmission can meet the needs of functions such as speed regulation of pure electric vehicles. However, since the reducer of the traditional pure electric transmission has a fixed speed ratio, the transmission efficiency of the whole vehicle is low. The pure electric two-speed transmission that increases the gear position to two gears can solve the above-mentioned problem of low transmission efficiency of the whole vehicle. [0003] At present, a common pure electric two-speed transmission, including a planetary mechanism, uses two clutches and two brakes in order to...

Claims

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Application Information

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IPC IPC(8): F16H3/70F16H57/10
CPCF16H3/70F16H57/10F16H2200/0021F16H2200/0034F16H2200/2005F16H2200/2035B60Y2200/91F16H3/54F16H2200/2066F16H2200/2082
Inventor 毛江刘巍周朝东王海兵夏丽华斯红路吴守国张永顺袁炘
Owner CHONGQING TSINGSHAN IND
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