Method and system for controlling the temperature of the driving motor during the uphill phase of the pure electric drive of the vehicle

Abstract

The present invention provides a method and system for controlling the temperature of the driving motor during the uphill stage of the pure electric drive of the vehicle. When the current temperature of the motor is higher than the target temperature of the motor at the uphill point, the positions of the vehicle before reaching the uphill point are calculated according to the current position of the vehicle, the current temperature of the motor and the target temperature of the motor at the uphill point Motor target temperature; according to the motor target temperature of each position of the vehicle before reaching the uphill point, the motor temperature of each position of the vehicle before the uphill point is correspondingly controlled, and finally the motor temperature of the uphill point is adjusted to the motor target temperature of the uphill point , so as to effectively prevent the motor from reaching its maximum temperature, and the need to reduce the power to affect the dynamic performance of the vehicle, and improve the life of the vehicle motor and the dynamic performance of the vehicle during the uphill stage.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and system for controlling the temperature of a driving motor during the uphill stage of pure electric driving of a vehicle. Background technique [0002] At present, in the uphill stage of pure electric driving of vehicles, the temperature of driving components such as motors may rise due to excessive demand for power. When the temperature rises to near the maximum temperature, driving components such as motors will operate at reduced power. The output power of the vehicle will affect the climbing ability of the vehicle. For a hybrid vehicle with a pure electric drive mode, it will trigger the engine to start, exit the pure electric drive mode, and enter the hybrid drive mode, which will affect the comfort. [0003] Please refer to figure 1 , which is a schematic diagram of the temperature change of the motor after adopting the existing control method for the tempe...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for controlling the temperature of the driving motor during the uphill stage of pure electric driving of the vehicle, so as to solve the problems existing in the temperature control method of the driving motor during the uphill stage of pure electric driving of the vehicle in the prior art

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