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Dynamic correction method and device for available power of battery, equipment and medium

A dynamic correction and power technology, which is applied in battery/fuel cell control devices, electric vehicles, transportation and packaging, etc., can solve the problems of not considering battery voltage rebound and low detection accuracy, so as to achieve accurate available power values ​​and avoid undershooting Press or overcorrect, reduce the effect of overcorrection

Pending Publication Date: 2022-07-29
GAC AION NEW ENERGY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The impulse response method only considers the static characteristics of the battery, but does not consider the battery voltage rebound in dynamic conditions, and the detection accuracy is very low

Method used

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  • Dynamic correction method and device for available power of battery, equipment and medium
  • Dynamic correction method and device for available power of battery, equipment and medium
  • Dynamic correction method and device for available power of battery, equipment and medium

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052] see figure 1 , is a flowchart of a method for dynamically correcting the available power of a battery provided by an embodiment of the present invention, the method includes steps S101 to S103:

[0053] S101, obtaining a current minimum voltage of a single cell and a current available power value of a battery, where the battery includes at least one single cell;

[0054] S102, comparing the current minimum voltage of the singl...

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PUM

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Abstract

According to the dynamic correction method and device for the available power of the battery, the equipment and the medium provided by the embodiment of the invention, the current single battery voltage minimum value and the current available power value of the battery are obtained, and the current single battery voltage minimum value is compared with the under-voltage threshold value and the recovery threshold value, so that the voltage rebound state of the battery is identified; and according to the state of voltage rebound, the current available power value of the battery is corrected through different step lengths, so that a more accurate available power value can be output, and the problem of under-voltage or over-correction of the battery caused by inaccurate available power detection is avoided.

Description

technical field [0001] The present invention relates to the technical field of power battery control, in particular to a method, device, device and medium for dynamically correcting the available power of a battery. Background technique [0002] In a new energy vehicle, the battery must not only provide energy to meet a certain range, but also output the required power. In battery management, the battery state parameters SOC (state of charge, remaining power), SOH (state of health, remaining life), SOP (state of power, power state) are all important state parameters, where the SOP value is used to characterize the battery. The available power value for the current state. [0003] In the prior art, the available power value is obtained through the BMS (Battery management system, battery management system) impulse response method. The impulse response method can detect the available power by applying specific pulse excitation to the battery in different SOC states. However, ...

Claims

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Application Information

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IPC IPC(8): B60L58/10B60L58/12
CPCB60L58/10B60L58/12
Inventor 龙海威李毅崑胡睿郑智伟邓浩成
Owner GAC AION NEW ENERGY AUTOMOBILE CO LTD