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Automobile motor torque distributing method and device

A technology of motor torque and distribution method, applied in electric vehicles, control devices, power management, etc.

Active Publication Date: 2019-11-12
HUMAN HORIZONS (JIANGSU) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the embodiments of the present invention is to provide a method and device for torque distribution of automobile motors, which can correct the driving torque in real time according to the loss curve of the driving motor, and can prevent the performance degradation of the driving motor from causing the torque distribution of the car when it leaves the factory. The solution cannot match the current motor characteristics well, which improves the user experience

Method used

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  • Automobile motor torque distributing method and device
  • Automobile motor torque distributing method and device
  • Automobile motor torque distributing method and device

Examples

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no. 1 example

[0043] Please refer to figure 1 and figure 2 In this embodiment, a method for distributing torque of an automobile motor is provided, which can be applied to new energy vehicles driven by drive motors, figure 1 A specific flowchart of the method is shown, figure 2 It shows the working flow chart of driving torque correction under the condition that the driving motor is a single motor. The methods include:

[0044] Step S10: Obtain the current vehicle speed and pedal opening of the car;

[0045] Step S20: Determine the driver's demand torque according to the current vehicle speed and the pedal opening;

[0046] Step S30: Based on the loss curve of the drive motor, the current speed of the drive motor and the required torque, determine the torque variation coefficient corresponding to the drive motor; wherein, the loss curve is the motor characteristic of the drive motor with the The relationship curve that changes with the increase of use time;

[0047] Step S40: Obtain...

no. 2 example

[0062] Please refer to figure 1 and image 3 In this embodiment, a method for distributing torque of an automobile motor is provided, which can be applied to new energy vehicles driven by drive motors, figure 1 A specific flowchart of the method is shown; image 3 It shows a working flow chart of driving torque correction in one embodiment when the driving motors are dual motors.

[0063] The methods include:

[0064] Step S10: Obtain the current vehicle speed and pedal opening of the car;

[0065] Step S20: Determine the driver's demand torque according to the current vehicle speed and the pedal opening;

[0066] Step S30: Based on the loss curve of the drive motor, the current speed of the drive motor and the required torque, determine the torque variation coefficient corresponding to the drive motor; wherein, the loss curve is the motor characteristic of the drive motor with the The relationship curve that changes with the increase of use time;

[0067] Step S40: Obta...

no. 3 example

[0082] Please refer tofigure 1 and Figure 4 In this embodiment, a method for distributing torque of an automobile motor is provided, which can be applied to new energy vehicles driven by drive motors, figure 1 A specific flowchart of the method is shown; Figure 4 It shows a working flow chart of driving torque correction in another embodiment when the driving motors are dual motors.

[0083] The methods include:

[0084] Step S10: Obtain the current vehicle speed and pedal opening of the car;

[0085] Step S20: Determine the driver's demand torque according to the current vehicle speed and the pedal opening;

[0086] Step S30: Based on the loss curve of the drive motor, the current speed of the drive motor and the required torque, determine the torque variation coefficient corresponding to the drive motor; wherein, the loss curve is the motor characteristic of the drive motor with the The relationship curve that changes with the increase of use time;

[0087] Step S40: ...

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Abstract

The embodiment of the invention provides an automobile motor torque distributing method and device. The method comprises the steps of obtaining the current automobile speed and the pedal opening degree of an automobile; according to the current automobile speed and the pedal opening degree, determining the needed torque of a driver; on the basis of a loss curve of a drive motor and the current rotating speed and the needed torque of the drive motor, determining a torque change coefficient corresponding to the drive motor; according to the torque change coefficient and the needed torque, obtaining a drive torque, wherein the drive torque is used for being input to a drive system of the automobile so that the drive motor can output the needed torque. The drive torque can be corrected in realtime according to the loss curve of the drive motor, the problem that a torque distributing scheme cannot be well matched with the current motor characteristics when the automobile is delivered due to performance degradation of the drive motor can be avoided, and the user experience is improved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a method and device for torque distribution of an automobile motor. Background technique [0002] Motors are widely used in the field of new energy vehicles, and the application and promotion of new energy vehicles can greatly reduce urban exhaust emissions. New energy vehicles have developed rapidly under the guidance of maintenance cost advantages, no exhaust emission advantages, and city restrictions. [0003] However, the motors of new energy vehicles will inevitably produce losses during use, which will lead to changes in the characteristics of the motors, resulting in performance degradation. If the torque distribution scheme of the new energy vehicle leaves the factory, it cannot match the current motor characteristics well, which is not conducive to maintaining the best performance of the vehicle, and will make the user obviously feel the decline in vehicle p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 周伟李素文郭树星
Owner HUMAN HORIZONS (JIANGSU) TECH CO LTD