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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

Active Publication Date: 2022-07-05
SHANTUI CONSTR MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the narrow reasonable speed range of the engine (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 too high

Method used

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

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Embodiment Construction

[0031] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the accompanying drawings only show some but not all of the parts related to the present invention.

[0032] figure 1 is a schematic structural diagram of the two-speed pure electric transmission system provided in this embodiment, figure 2 is a schematic diagram of the vehicle transmission provided in this embodiment, such as figure 1 and figure 2 As shown, this embodiment provides a two-speed pure electric transmission system, whic...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/44F16H61/32
CPCF16H3/44F16H61/32F16H2003/442F16H2061/326
Inventor 伊利峰侯衍华王生波刘燕杨娜娜
Owner SHANTUI CONSTR MASCH CO LTD
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