Charging and discharging torque control method and device for vehicle power system and vehicle
A vehicle power and torque control technology, applied in control devices, battery/fuel cell control devices, control drive, etc., can solve problems that do not involve calculation methods, DCDC power consumption, vehicle driving torque and energy recovery Torque can not get accurate and reliable calculation basis and other problems, to achieve the real and reliable torque capacity value, effectively and reasonably determine the effect of discharging and charging torque capacity
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Embodiment 1
[0026] figure 1 It is a flow chart of a vehicle power system charge and discharge torque control method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of determining the discharge and charge torque of the entire power system of the vehicle. The method can be charged and discharged by the vehicle power system Torque control device, which can be implemented by software and / or hardware.
[0027] Such as figure 1 As shown, the method specifically includes the following steps:
[0028] Step 110: Determine the maximum effective power of the motor according to the obtained maximum torque of the motor, the motor speed and the motor temperature of the driving motor.
[0029] Among them, the driving motor can be understood as a working device that converts the electric energy of the power supply in the electric vehicle into mechanical energy to drive the wheels. The motor speed can be understood as the speed of the driving motor in t...
Embodiment 2
[0039] figure 2 It is a flow chart of a method for controlling charging and discharging torque of a vehicle power system provided by Embodiment 2 of the present invention. In this embodiment, on the basis of the above embodiments, the above method for controlling the charging and discharging torque of the vehicle power system is further optimized.
[0040] Such as figure 2 As shown, the method specifically includes:
[0041] Step 200, querying the predetermined motor speed and torque characteristic table to obtain the current maximum torque of the driving motor at the motor speed.
[0042] Wherein, the motor speed can be understood as the speed of the driving motor in the current state. The maximum torque at the current speed can be understood as the maximum value of the torque corresponding to the driving motor at the current speed of the motor. The motor speed and torque characteristic table can be understood as a mapping relationship table between different motor spee...
Embodiment 3
[0070] image 3 It is a flow chart of a method for controlling charging and discharging torque of a vehicle power system provided by Embodiment 3 of the present invention. In this embodiment, on the basis of the above embodiments, the above method for controlling the charging and discharging torque of the vehicle power system is further optimized. The method may be executed by a vehicle power system charge and discharge torque control device, and the vehicle power system charge and discharge torque control device may be a vehicle controller VCU. When calculating the relevant power and torque of the drive motor and power battery, in order to distinguish the discharge and charge of the vehicle power system, the relevant power and torque of the drive motor and power battery can be recorded as positive values when the vehicle power system is discharged. When the vehicle power system is charged, the relevant power and torque of the drive motor and power battery are recorded as n...
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