Planet row type two-gear transmission of blade electric vehicle (BEV)

Abstract

The invention provides a planet row type two-gear transmission of a BEV, the structure is relatively simple, the cost is low and the control difficulty is small. The planet row type two-gear transmission of the BEV comprises a driving motor (1), a motor shaft (2), an output shaft (7), an outer ring (8), a clutch (10), a brake (9) and a planet row, wherein a sun wheel (3) of the planet row is located in a planet carrier (5), a planet wheel (3) of the planet row is rotationally mounted on the planet carrier (5), a gear ring (6) of the planet row is located on the gear row outside of the planet carrier (5), the right end of the motor shaft (2) of the driving motor (1) is fixedly connected with the sun wheel (3) of the planet row, the right end of the planet carrier (5) of the planet row is fixedly connected with the output shaft (7), and the gear ring (6) is fixedly connected with the left end of the outer ring (8). The planet row type two-gear transmission of the BEV is characterized in that the clutch (10) is a high-speed combined centrifugal clutch and is connected with the right end of the outer ring (8) and the planet carrier (5) of the planet row respectively, and the brake (9) is connected with the middle of the outer ring (8).

Description

technical field [0001] The invention relates to a pure electric vehicle transmission, in particular to a pure electric vehicle planetary row 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, electric vehicles have become a major development trend. Although the traditional pure electric vehicle transmission can meet functions such as speed regulation and driving. However, since the reducer of the traditional pure electric vehicle transmission has a fixed speed ratio, the transmission efficiency of the whole vehicle is low. And increasing the gear position to two gears can solve the problem of low transmission efficiency of the above-mentioned vehicle. [0003] At present, the common planetary row two-speed transmission for pure electric vehicles, including the drive motor and the planetary row, uses a non-centrifugal clutch and a brake in orde...

AI Technical Summary

Problems solved by technology

However, due to the fixed speed ratio of the reducer of the traditional pure electric vehicle transmission, the transmission efficiency of the whole vehicle is low

And increasing the gear to two gears can solve the problem of low transmission efficiency of the above-mentioned vehicle

[0003] At present, the common planetary row two-speed transmission for pure electric vehicles, including the drive motor and the planetary row, uses a non-centrifugal clutch and a brake in order to achieve shifting. The problem is that the non-centrifugal clutch and brake are respectively Control requires two sets of actuators and control systems, the structure is relatively complex, the cost is high, and the two sets of control systems are controlled at the same time during the shifting process, which is difficult to control

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