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Battery allowable power estimation method, device, system and storage medium

A technology of allowable power and battery, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of inability to accurately calculate open circuit voltage, inability to accurately estimate battery allowable power, etc., to achieve the effect of improving accuracy

Active Publication Date: 2020-12-29
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Common allowable power methods based on voltage limitation include: offline look-up table method, that is, the allowable power under different states of charge and battery temperature is calibrated offline, and the allowable power of the battery is determined by looking up the table during actual vehicle operation. Power; but for a battery system with hysteresis characteristics, the open circuit voltage cannot be accurately calculated due to the influence of historical working conditions, resulting in an inability to accurately estimate the allowable power of the battery

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  • Battery allowable power estimation method, device, system and storage medium
  • Battery allowable power estimation method, device, system and storage medium
  • Battery allowable power estimation method, device, system and storage medium

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[0025]The features and exemplary embodiments of each aspect of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention, and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0026]It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily req...

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Abstract

A method, a device and a system for estimating the state of power of a battery, and a storage medium. The method comprises: determining a current state of charge (SOC) value of a battery and a current battery temperature (S210); acquiring operating condition data of the battery (S220); processing the operating condition data to obtain a hysteresis coefficient of the battery, so as to estimate the state of power of the battery according to the correlation between the state of power of the battery and the current SOC value, the current battery temperature and the hysteresis coefficient (S230). The method for estimating the state of power can improve the accuracy of estimating the state of power of a battery having hysteresis characteristics.

Description

Technical field[0001]The present invention relates to the field of battery technology, and in particular to a method, device, system and storage medium for estimating allowable power of a battery.Background technique[0002]In the battery management system of electric vehicles, the battery's allowable power (State OF Power) indicates the battery's ability to withstand charge and discharge power. When the battery voltage is too low or too high, it may lead to a reduction in battery life and even a safety risk Therefore, it is necessary to estimate the allowable power (SOP) of the battery in the Pack based on the voltage limit to protect the battery from exceeding the upper and lower limits of the voltage.[0003]Common allowable power methods based on voltage limit include: offline look-up table method, that is, through offline calibration of allowable power under different states of charge and battery temperature, and check the table to determine the allowable battery in real vehicle op...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/382G01R31/396
CPCG01R31/382G01R31/396
Inventor 李世超汤慎之杜明树阮见卢艳华张伟
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY