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A method for extraction of universal battery operating conditions in the region for on-board battery life prediction

A life prediction and on-board battery technology, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve the problems of large deviations in universal working conditions and narrow application range

Active Publication Date: 2021-12-10
RISESUN MENGGULI NEW ENERGY SCIENCE & TECHNOLOGY CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the scope of application is narrow. Since the current of the on-board battery is in the form of pulses when the electric vehicle is running, and the operating conditions are related to road conditions and temperature, the actual working conditions are extracted to replace the universal working conditions in this area. The deviation will be larger

Method used

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  • A method for extraction of universal battery operating conditions in the region for on-board battery life prediction
  • A method for extraction of universal battery operating conditions in the region for on-board battery life prediction
  • A method for extraction of universal battery operating conditions in the region for on-board battery life prediction

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot limit the protection scope of the present invention with this

[0034] Such as figure 1 As shown, in order to accurately predict the life of the vehicle battery, the present invention proposes a method for extracting the operating conditions of the universal battery in the region for the prediction of the life of the vehicle battery. Include the following steps:

[0035] 1) Extraction of vehicle running timetable includes the vehicle's running timetable, number of trips, one-way running time, and departure interval. According to the above data, the working period and shelving period of the vehicle are extracted, so as to obtain the running and shelving time of the vehicle throughout the day.

[0036] 2) Real-time collection and storage of actual ...

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Abstract

The invention discloses a method for extracting the operating condition of the universal battery in the region for the prediction of the service life of the vehicle battery. Shelving period; 2), data collection of actual working conditions in a certain area: real-time collection of battery operating information of different vehicles in the area through the electric vehicle management system; 3), voltage and SOC extraction: extract the operating voltage range and SOC of the battery according to the vehicle operating data Scope; 4), vehicle-mounted operating current extraction step: extract the throughput per unit time of the battery in this area; segment the operating current, and extract the frequency of occurrence of each segment operating current; combine the throughput and the frequency to obtain the throughput per unit time Operating current spectrogram; 5), extraction step of storage and operating temperature: obtain the ambient temperature of the battery in the area as the storage temperature of the battery, and calculate the operating temperature according to the relationship between the temperature rise of the vehicle and the initial temperature.

Description

technical field [0001] The invention relates to a method for extracting the operating conditions of a power battery, in particular to an extraction method based on the ambient temperature in a certain area and the operating conditions of a vehicle. Background technique [0002] With the development of the electric vehicle market, the sales of electric vehicles are increasing year by year, but there is no reliable method for predicting the life of on-board batteries on running vehicles. If an effective prediction method for on-board battery life can be proposed, it will be used in battery maintenance and quality assurance. On the one hand, it provides guidance for battery companies. [0003] The current research on battery life is mainly focused on the laboratory life, including the establishment of life models for shelf life, cycle life, and operating life. At present, the most common way to predict the life of on-board batteries is to extract a certain actual operating con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/392G01R31/367
Inventor 徐金龙李群陈娟吴宁宁刘建红
Owner RISESUN MENGGULI NEW ENERGY SCIENCE & TECHNOLOGY CO LTD
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