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A method for power distribution of pure electric vehicles based on future driving power requirements

A pure electric vehicle, power demand technology, applied in the field of pure electric vehicle power distribution, can solve problems such as large driving power and damage to the motor, and achieve the effect of accurate calculation

Active Publication Date: 2021-06-22
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The car needs a large driving power when accelerating rapidly and climbing a hill. When the driving power provided by the power battery to the motor cannot meet the requirements, the motor will be in an under-power state and damage the motor.

Method used

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  • A method for power distribution of pure electric vehicles based on future driving power requirements
  • A method for power distribution of pure electric vehicles based on future driving power requirements
  • A method for power distribution of pure electric vehicles based on future driving power requirements

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0022] Such as figure 1 Shown is a schematic diagram of rolling optimization according to the embodiment of the present invention. The specific process is as follows: during the driving process of a pure electric vehicle, new driving data will be continuously generated while the old data will lose its validity as time changes. Therefore, it is necessary to The method of rolling historical time window is used to optimize the prediction of future operating condition information. If the rolling historical time window is too small, there will be a lack of sufficient data samples, which will lead to a decrease in prediction accuracy, making the results not universal. If it is too large, it will increase the amount of calculation and contain too many invalid historica...

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Abstract

The present invention provides a pure electric vehicle power distribution method based on the future driving power demand, the Markov chain predicts the speed and acceleration information of the next state, the GPS navigation system calculates the slope information, and calculates the future demand according to the parameters of the vehicle itself Power; judge whether the next state is rapid acceleration or climbing, if so, judge whether the SOC is within the threshold range, if not, give priority to meeting the power requirements of the current state; when the SOC is within the threshold range, satisfy the current state and the next state at the same time power demand; when the SOC is not within the threshold range, if the current state is rapid acceleration or climbing state, the power demand of the current state is given priority and proper deceleration is performed, otherwise the power demand of the next state is given priority. The present invention maintains the SOC of the power battery within the threshold range as much as possible, takes into account the required power in the future state, and reduces the situation that the motor is in an underpower state during rapid acceleration or climbing in the future state and damages the motor.

Description

technical field [0001] The invention relates to the field of new energy technology, in particular to a method for allocating power of a pure electric vehicle based on future driving power requirements. Background technique [0002] Pure electric vehicles are limited single energy sources, and their power sources all come from power batteries. Compared with traditional fuel vehicles, pure electric vehicles have better power. However, due to the incomplete development of power battery technology, the development of pure electric vehicles has been limited, and the rational use of the limited energy of pure electric vehicles has become an important direction for the development of pure electric vehicles. At present, the power distribution of pure electric vehicles with single power supply is mainly based on the principle of minimizing the energy consumption of the whole vehicle to distribute power to the drive motor and accessories, ignoring the influence of ramps on power dist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCY02T10/72Y02T90/16
Inventor 盘朝奉顾喜薇陈龙江浩斌王丽梅徐兴
Owner JIANGSU UNIV
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