Power distribution method of electric vehicle

Abstract

The invention provides a power distribution method of an electric vehicle, and belongs to the field of electric vehicle power control. The power distribution method comprises the steps that the available power P0 of a whole vehicle, the power P1 needed by a current driving system, the power P2 needed by defrosting and demisting of a current air conditioning system, the power P3 needed by refrigerating and heating of the current air conditioning system and the power P4 consumed by a current high-low voltage conversion system are obtained; and when P0 is smaller than P1 + P2 + P3 + P4, whether the high-low voltage conversion system is shut down or not is judged according to the power demand situation of the vehicle and the electric quantity of a storage battery of the vehicle, and P0 is distributed according to the preset priority. According to the power distribution method, electricity can be saved when the available power of the whole vehicle is insufficient, the endurance mileage andthe economy of the whole vehicle are improved, the power is reasonably distributed, and the safety, the dynamic property and the comfort of the vehicle are considered.

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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