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Method for detecting the available traveling distance of electric vehicle power battery

A power battery and mileage technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of inaccurate calculation of remaining mileage, and achieve the effect of wide application range

Inactive Publication Date: 2016-04-06
WANXIANG 123 CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the inaccurate problem of using SOC to calculate the remaining mileage in the prior art, and provides an accurate detection method for the mileage of the electric vehicle power battery

Method used

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  • Method for detecting the available traveling distance of electric vehicle power battery
  • Method for detecting the available traveling distance of electric vehicle power battery
  • Method for detecting the available traveling distance of electric vehicle power battery

Examples

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Embodiment

[0030] In this embodiment, a method for detecting the mileage of a power battery of an electric vehicle, such as figure 1 shown, including the following steps:

[0031] Step 1: Execute the system to detect the power battery, and obtain the current remaining power SOC, temperature T, minimum discharge power P, and the minimum remaining power value SOC of the power battery L , The maximum remaining power value SOC of the power battery H ;The minimum power battery remaining power value SOC L , the maximum remaining power value SOC H Pre-defined by the execution system, the minimum remaining power value SOC L is 0%, and the maximum remaining power value SOC H is 100%.

[0032] Step 2: Calculate the current remaining power SOC and the minimum remaining power value SOC of the power battery according to the obtained parameters L , the maximum remaining power value SOC H The discharge energy E in the state c ,E L ,E H ; The calculation steps of the discharge energy include: ...

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Abstract

The present invention relates to a method for detecting the available traveling distance of an electric vehicle power battery to solve the problem that the calculation of the remaining traveling mileage by using SOC is not accurate in the prior art. The correction method comprises a step of obtaining the current state of charge (SOC) of a power battery, a temperature T, a minimum discharge power P, a power battery minimum SOC value and a power battery maximum SOC value, a step of calculating the discharge energy of the power battery in current SOC value, minimum SOC value and maximum SOC value states according to the obtained parameters, and a step of calculating the percentage SOE of the remaining energy according to the discharge energy. The method has the advantages that the problem that battery SOC value and an actual electric vehicle traveling distance are not in linear correspondence and the available traveling distance of the vehicle can not be correctly reflected is solved. According to the real-time change of the SOC value, the SOE is obtained, the electric vehicle available traveling distance can be obtained correctly in real time, the application range is wide, and the method can be applied to any battery system.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a more accurate detection method for the mileage of a power battery of an electric vehicle. Background technique [0002] With the country's strong support and promotion of the new energy industry, new energy vehicles have become a major development momentum, of which pure electric vehicles are the main development direction. In pure electric vehicles, the SOC (battery state of charge) of the power battery is currently used to represent the remaining power in the battery. The driver judges whether the battery needs to be charged according to the SOC value, and judges the remaining mileage of the vehicle according to the SOC value. . [0003] However, the SOC value of the power battery of a pure electric vehicle cannot directly reflect the remaining energy SOE in the battery, and the energy that the battery can provide can directly reflect the mileage of the vehicle. From...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 高科杰宋文涛
Owner WANXIANG 123 CO LTD
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