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A method for meshing control of electric vehicle transmission shaft

A technology for electric vehicles and control methods, which is applied to transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as poor resolution, and achieve suppression of gear collision, improved driving experience, and improved mechanical life. Effect

Active Publication Date: 2021-06-25
CHUANGQU SHANGHAI NEW ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing electric vehicle drive shaft meshing control method mainly relies on the damping control of the motor. This control method can solve the speed fluctuation of the drive shaft caused by the drive shaft meshing to a certain extent, and has a certain inhibitory effect on the impact, but the solution effect is relatively poor. Poor, especially in the case of a large gap between the shafts, it is difficult to achieve the desired effect

Method used

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  • A method for meshing control of electric vehicle transmission shaft
  • A method for meshing control of electric vehicle transmission shaft
  • A method for meshing control of electric vehicle transmission shaft

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Embodiment Construction

[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0031] see figure 1 , shown in the figure is a method for controlling the meshing of the drive shaft of an electric vehicle. The control method is completed by the cooperation of the vehicle controller 100, the drive shaft 200 and the drive shaft 300, as shown in figure 2 shown, which includes the following steps:

[0032] Step S10, identifying the meshing start step, which is used to identify whether the gear meshing between the drive shaft 200 and the transmission shaft 300 is forward meshing or reverse meshing;

[0033] Step S20, the meshing process control step, is used for the vehicle controller 100 to control the drive shaft 200 and the transmission shaft 300 to perform gear meshing at a relatively small relative speed;

[0034] Step S3...

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Abstract

A method for controlling the meshing of a transmission shaft of an electric vehicle disclosed by the invention includes the following steps: a meshing start step for identifying whether the gear meshing between the drive shaft and the transmission shaft is a forward meshing or a reverse meshing; the meshing process control step, It is used to control the gear meshing between the drive shaft and the transmission shaft at a relatively small relative speed; the step of identifying the end of meshing is used to identify whether the gear meshing between the drive shaft and the transmission shaft is completed, and if so, control the output of the drive shaft Actual demand torque. The invention accurately identifies and controls the meshing process of the transmission shaft, so as to ensure that the gear impact amplitude caused by the meshing of the transmission shaft during the transition from braking to driving and from driving to braking will not be too large, thereby effectively improving driving experience and mechanical life.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method for controlling engagement of transmission shafts of electric vehicles. Background technique [0002] There is a certain gap between the electric vehicle transmission shaft and the drive shaft, and different production and manufacturing levels will produce different gap sizes. When the electric vehicle is running normally, the drive shaft drives the transmission shaft to rotate, the drive shaft gear meshes with the front end of the transmission shaft, and there is no relative speed between the two. When the output force of the drive shaft changes from driving force to braking force, the gear of the drive shaft meshes with the rear end of the drive shaft. Due to the existence of a gap and the relative speed between the two, collisions will occur during the meshing process, resulting in loud noise and poor The driving experience will cause damage to the transmis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/00F16H61/21F16H63/34F16H63/40F16H59/14
CPCF16H59/14F16H61/00F16H61/21F16H63/3416F16H63/40
Inventor 颜宇杰唐旺祥
Owner CHUANGQU SHANGHAI NEW ENERGY TECH CO LTD
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