A two-speed pure electric transmission system, pure electric engineering vehicle and control method thereof

A technology of engineering vehicles and control methods, which is applied in the field of vehicles, can solve the problems of unable to output torque, narrow engine, low efficiency, etc., and achieve the effect of improving mechanical operation efficiency, reducing loss, and ensuring smoothness
CN110296186BActive Publication Date: 2022-07-05SHANTUI CONSTR MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANTUI CONSTR MASCH CO LTD
Publication Date
2022-07-05

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Abstract

The invention relates to the field of vehicles, and specifically discloses a two-speed pure electric transmission system, a pure electric engineering vehicle and a control method thereof. The two-speed pure electric transmission system provided by the invention can realize the adjustment and change of power output under different driving conditions. , in the case of heavy load, the brake is separated from the ring gear and the clutch is combined, and the first gear is operated to achieve high torque output; in the case of light load, the brake is combined with the ring gear and the clutch is separated, and the second gear is operated to increase the speed; Moreover, during the shifting process, since one of the clutch and the brake is always in a combined state, it is possible to realize no power interruption during the shifting process. The pure electric engineering vehicle provided by the present invention includes the above-mentioned two-speed pure electric transmission system, which can switch gears according to the optimal dynamic performance of the pure electric engineering vehicle, so as to realize the motor running in the high-efficiency speed region as much as possible, thereby reducing the loss, Improve the efficiency of mechanical work.
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Description

technical field

[0001] The invention relates to the field of vehicles, in particular to a two-speed pure electric transmission system, a pure electric engineering vehicle and a control method thereof. Background technique

[0002] Existing loaders all use traditional engine power output, specifically the output power from the flywheel of the engine to the torque converter, then from the over-clutch to the direct gear, and then from the direct gear to the output shaft, drive shaft, press pack, and half shaft. wheel edge. With the development of battery energy storage materials, the development and construction of charging infrastructure and breakthroughs in electronic control technology, the application of pure electric drive in construction machinery has been met. Because the reasonable speed range of the engine is narrow (generally 1000-4000rpm), the torque cannot be output when the speed is too low, and the engine will be in an inefficient working state when the speed is ...

Claims

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