Vehicle electric driving system control method, electric driving system and vehicle

A technology of an electric drive system and a control method, which is applied in the field of vehicles, can solve problems such as limited application occasions, and achieve the effects of increasing heating rate, easy promotion, and low cost

Active Publication Date: 2021-06-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method can control the heat generated by the electric drive system, it can only be used when the vehicle is stationary, and its application is limited

Method used

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  • Vehicle electric driving system control method, electric driving system and vehicle
  • Vehicle electric driving system control method, electric driving system and vehicle
  • Vehicle electric driving system control method, electric driving system and vehicle

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.

[0051] Refer below Figure 1-Figure 6 A method for controlling an electric drive system of a vehicle according to an embodiment of the present invention is described.

[0052] figure 1 It is a flowchart of a control method for a vehicle electric drive system according to an embodiment of the present invention.

[0053] In some embodiments of the present invention, the electric drive system includes a motor and a motor controller, and the motor controller is used to control the running state of the motor. For example, the motor controller can control the power switching device to turn on or off according to the motor driving signal, or adjust the operating power of the motor to run at a specific power to meet the heating regulation requirements of the ele...

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PUM

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Abstract

The invention discloses a vehicle electric driving system control method, an electric driving system and a vehicle. The method comprises the steps of obtaining the current heating power of the electric driving system according to the current operation condition point of the vehicle; determining a current adjusting amplitude according to the heating power required by the whole vehicle and the current heating power; obtaining a current direct-axis current value and a current quadrature-axis current value of the motor under the current operating condition point of the vehicle according to the three-phase current value and the position value of the motor; and controlling the current direct-axis current value to serve as the target direct-axis current value with the preset conversion frequency and the current adjusting amplitude oscillation, then making the electric driving system to heat, the heating rate of the power battery can be increased through oscillation of the current flowing through the power battery, and therefore the vehicle electric driving system can be suitable for cold regions.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method for controlling an electric drive system of a vehicle, an electric drive system and a vehicle. Background technique [0002] In related technologies, the Chinese invention patent application number is CN202010600942.9, and the patent titled "Automotive Heat Pump Heating System and Method Combining Battery Cooler and Motor Waste Heat" discloses a method of using motor waste heat to improve the heating effect. Using the battery cooler and using the waste heat of the motor to improve the heating performance of the heat pump and defrosting of the external condenser, but using the waste heat of the motor to improve the heating effect, but the amount of waste heat from the motor is uncontrollable. If the ambient temperature is very low In this situation, there is a situation where the utilization effect of the waste heat of the motor is poor. [0003] The current new energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L58/27B60H1/14H02P21/14H02P21/22H02P29/62
CPCB60L15/20B60L58/27B60H1/143H02P21/14H02P21/22H02P29/62Y02T10/72B60L15/06B60L2240/423B60L2240/429B60Y2200/91B60Y2306/07Y02T10/64B60H1/00385B60L2240/425B60L2240/427
Inventor 凌和平潘华张宇昕丘国维洪臣
Owner BYD CO LTD
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