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Energy recovery control method for pure electric vehicle

A pure electric vehicle, energy recovery technology, applied in the field of pure electric vehicle energy recovery control, can solve problems such as poor energy recovery efficiency, and achieve the effect of improving energy recovery efficiency and increasing contribution rate

Pending Publication Date: 2021-09-17
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above, the present invention aims to provide a pure electric vehicle energy recovery control method to solve the problem of poor energy recovery efficiency caused by the above reasons

Method used

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  • Energy recovery control method for pure electric vehicle

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] The present invention proposes an embodiment of a pure electric vehicle energy recovery control method, specifically, as figure 1 As shown, can include the following:

[0037] Step S1, pre-preparing several cell voltage thresholds, and forming corresponding voltage segment intervals according to the cut-off voltage of the battery cells and the cell voltage thresholds;

[0038] Step S2, setting corresponding control target power values ​​and power control gradient values ​​for each of the voltage segments;

[0039] Ste...

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Abstract

The invention discloses an energy recovery control method for a pure electric vehicle, and the design concept of the method is that the allowable energy recovery calibration power is obtained according to the current battery electric quantity and battery temperature, the consumed power under an accessory is obtained according to the information of the vehicle-mounted accessory, and the allowable energy recovery calibration power and the consumed power are combined to obtain a theoretically required power value. When the electric quantity is high, the larger or smaller theoretical energy recovery power is adjusted through the preset regulation and control interval and the maximum value of the single voltage, the situation that energy recovery is interrupted due to the fact that the single voltage is too high due to the fact that the calibrated power is too large is prevented, and therefore it is ensured that the battery is in a sustainable energy recovery mode close to the capacity limit. The energy recovery contribution rate under the working condition of high electric quantity can be improved.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to an energy recovery control method for pure electric vehicles. Background technique [0002] Pure electric vehicles can achieve deceleration and kinetic energy recovery through the motor when the driver needs to decelerate. However, when the SOC of the power battery is high and the temperature is low, the charging power allowed due to the limitation of the battery characteristics is very small or even not allowed to charge. As a result, many pure electric vehicles limit or even prohibit the energy recovery of the motor under this working condition. [0003] As a power consumption system, the whole vehicle has many high-voltage accessories and low-voltage accessories that consume electricity. Part of the recovered electricity will be directly consumed by the high-voltage and low-voltage accessories, and the other part will be charged into the battery; moreover, it is generally ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B60L58/18B60L58/12
CPCB60L7/10B60L58/18B60L58/12Y02T10/70
Inventor 王晨亮郭亚子王周晨朱行蔬
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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