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
CN113022326AActive Publication Date: 2021-06-25BYD CO LTD
5 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BYD CO LTD
Publication Date
2021-06-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More