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A method and device for calculating the remaining mileage of a pure electric vehicle

A technology of pure electric vehicles and calculation methods, which is applied in the field of calculation methods and devices for remaining mileage of pure electric vehicles, can solve problems such as poor stability, poor user experience, and inaccurate remaining mileage, so as to ensure accuracy and good expected driving mileage , Improve the effect of user experience

Active Publication Date: 2020-06-23
北京长城华冠汽车技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a method and device for calculating the remaining mileage of a pure electric vehicle, so as to alleviate the technical problems of inaccurate remaining mileage and poor stability in the prior art, resulting in poor user experience

Method used

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  • A method and device for calculating the remaining mileage of a pure electric vehicle
  • A method and device for calculating the remaining mileage of a pure electric vehicle
  • A method and device for calculating the remaining mileage of a pure electric vehicle

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Embodiment 1

[0057] In order to facilitate the understanding of this embodiment, a method for calculating the remaining mileage of a pure electric vehicle disclosed in the embodiment of the present invention is firstly introduced in detail, as shown in figure 1 Shown: Methods include:

[0058] Step S101, calculating and predicting the remaining mileage according to the remaining energy of the battery and the average power consumption of the vehicle;

[0059] In the embodiment of the present invention, the remaining energy of the battery can be obtained according to the combination of the battery SOC reported by the battery management system and the rated energy of the battery, and the average power consumption of the vehicle can be obtained according to the combination of the discharged energy of the battery and the mileage of the vehicle. Such as figure 2 As shown, step S101 may include:

[0060] Step S201, combining the battery SOC reported by the battery management system with the ra...

Embodiment 2

[0104] For realizing the method for calculating the remaining mileage of the pure electric vehicle in the above embodiment, such as Figure 6As shown, the embodiment of the present invention provides a device for calculating the remaining mileage of a pure electric vehicle, including:

[0105] The first calculation unit 11 is used to calculate and predict the remaining mileage according to the remaining energy of the battery and the average power consumption of the vehicle;

[0106] The correction unit 12 is used to query the SOC table look-up mileage and the NEDC correction coefficient, and correct the SOC table look-up mileage according to the NEDC correction coefficient to obtain the SOC correction mileage;

[0107] The second calculation unit 13 is used to query the weighting coefficient, and combine the weighting coefficient with the predicted remaining mileage and SOC correction mileage to calculate the weighted remaining mileage;

[0108] The third calculation unit 14 ...

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Abstract

The invention provides a remainder range calculating method and device of a pure electric automobile and relates to the technical field of pure electric automobiles. The remainder range calculating method of the pure electric automobile comprises the steps of calculating a predicated remainder range according to a battery remaining energy and a vehicle average power consumption; inquiring SOC table look-up range and a NEDC correction coefficient; correcting the SOC table look-up range according to the NEDC correction coefficient to obtain an SOC corrected range; inquiring a weighting coefficient and combining the weighting coefficient with the predicated remainder range and the SOC corrected range; calculating weighted remainder range; inquiring a stability coefficient and combining the stability coefficient with the weighted remainder range; and calculating a stable remainder range. According to the remainder range calculating method and device of the pure electric automobile, provided by the embodiment of the invention, by introducing the SOC table look-up range, the NEDC correction coefficient and the weighting coefficient, the accuracy of a driving range is guaranteed, and an expected running range of the automobile can be preferably predicated; by introducing the stability coefficient, the changing of the driving range is single and stable, user experience is improved, andthe range anxiety is reduced.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a method and device for calculating the remaining mileage of pure electric vehicles. Background technique [0002] The remaining mileage of a pure electric vehicle refers to the expected mileage of the vehicle obtained through calculation under the current vehicle state. At present, the remaining mileage calculation method mainly adopts the method of multiplying the estimated battery information sent by the battery management system and the rated energy of the battery to obtain the remaining energy of the battery, and then the battery discharge energy is obtained by integrating the instantaneous power of the battery, and then divided by the battery discharge energy. The average energy consumption of the vehicle is obtained by the corresponding vehicle mileage, and finally the remaining mileage of the pure electric vehicle can be obtained by dividing the remaining e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L58/12
CPCB60L2260/52B60L2260/54Y02T10/70
Inventor 雷占秀朱伟黎旸
Owner 北京长城华冠汽车技术开发有限公司