A method for judging the discharge interval of a power battery

A technology of power battery and discharge interval, applied in the direction of measuring current/voltage, measuring electricity, measuring electrical variables, etc., can solve problems such as adverse effects and inaccuracy of power battery monitoring research

Active Publication Date: 2020-11-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the discharge interval of the power battery is mostly realized by judging the discharge state according to the magnitude and direction of the current voltage or current change. Inaccurate and wrong interval judgments have adverse effects on the follow-up work of power battery monitoring research

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  • A method for judging the discharge interval of a power battery
  • A method for judging the discharge interval of a power battery
  • A method for judging the discharge interval of a power battery

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Embodiment Construction

[0072] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0073] A method for judging the discharge interval of a power battery provided by the present invention specifically includes the following steps:

[0074] Step 1. Collect the current and voltage data of the power battery during operation and store them in the database, where the sampling time is k seconds; select the interval in the database where the voltage of all sampling points is below 0.95*Vc as the interval to be determined, and Vc is The continuous and stable voltage of the power battery; finally, take out the data within the interval to be determined, within (10-20) k before t...

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Abstract

The invention provides a method for judging the discharge interval of a power battery, which belongs to the field of judging the discharge interval of a power battery. The invention firstly establishes the probability model of the discharge starting point and the ending point of the power battery; then calculates the probability of the discharge starting point and the ending point of each selected sampling point one by one; finally, based on the calculated probability, the discharge interval of the power battery is obtained. The invention determines the discharge interval of the power battery by establishing a probability model, expresses the characteristics of the discharge starting point and the end point by probability, and analyzes the selected sampling points, so that the discharge interval can be accurately obtained, and the judgment accuracy is improved.

Description

technical field [0001] The invention belongs to the field of judging the discharge interval of a power battery, and in particular relates to a probability-based method for judging the discharge interval of a power battery. Background technique [0002] With the rapid development of the power battery and the Internet of Things industry, it is a very promising direction to use the Internet of Things for the research on power battery monitoring. The power battery is a new generation of green high-energy rechargeable battery, which has the advantages of high voltage, high energy density, and good cycle performance. The application of the Internet of Things monitoring system to the power battery can realize real-time monitoring of the power battery, which is of great value to the use and safety performance of the power battery. [0003] In the real-time data of the power battery obtained through the Internet of Things, the current and voltage of the power battery during discharg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/367G01R31/396G01R19/00
CPCG01R19/00G01R31/367G01R31/396
Inventor 向勇刘家琛王健翔冯雪松
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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