A power distribution method for an electric vehicle

Abstract

The invention provides a power distribution method of an electric vehicle, which belongs to the field of electric vehicle power control. The power allocation method includes: obtaining the available power P0 of the whole vehicle, the power P1 required by the current drive system, the power P2 required by the current air-conditioning system for defrosting and defogging, and the power required for cooling and heating by the current air-conditioning system P3 and the power P4 consumed by the current high-low voltage conversion system; when P0<P1+P2+P3+P4, judge whether to turn off the high-low voltage conversion system according to the power demand of the vehicle and the power of the battery of the vehicle, and Assign P0 with preset priority. The power distribution method of the present invention can save electricity when the available power of the whole vehicle is insufficient, improve the cruising range and the economy of the whole vehicle, and distribute power reasonably, taking into account the safety, power and comfort of the vehicle.

Description

technical field [0001] The invention relates to the field of electric vehicle power control, in particular to a power distribution method for electric vehicles. Background technique [0002] At present, the use of electric vehicles is becoming more and more common. In order to enable drivers to have a good driving experience during use, we need to consider factors such as power, safety and comfort when designing power systems. [0003] When the available power of the whole vehicle is insufficient, if the power is fully guaranteed and the cooling and heating functions are completely turned off, the comfort will deteriorate and there will be certain safety hazards. However, if the cockpit cooling, heating and defrosting are fully guaranteed If the defogging function is used, it will lead to insufficient power, inability to climb slopes or insufficient power for overtaking. [0004] Therefore, how to save electricity as much as possible and take into account the normal operati...

AI Technical Summary

Problems solved by technology

[0003] When the available power of the whole vehicle is insufficient, if the power is fully guaranteed and the cooling and heating functions are completely turned off, the comfort will deteriorate and there will be certain safety hazards. However, if the cockpit cooling, heating and defrosting are fully guaranteed If the defogging function is used, it will lead to insufficient power, inability to climb slopes or insufficient power for overtaking.

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