Battery capacity online estimation method and system
A technology of battery capacity and capacity decay, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problems of low accuracy and complicated operation, and achieve the effect of high accuracy and easy operation.
Active Publication Date: 2017-02-01
BEIJING KEY POWER TECH
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The present invention aims to at least solve the problems of complex operation and low accuracy in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate 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 and are intended to explain the present invention and should not be construed as limiting the present invention.
[0032] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0033]...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of lithium batteries, and discloses a method for estimating a battery capacity online. The method comprises the steps that A, a capacity attenuation model is provided, and capacity attenuation model parameters are initialized; B, a battery to be measured is charged and discharged repeatedly delta n times; C, the estimated relative capacity attenuation of the current battery to be measured is obtained through calculation; D, the real relative capacity attenuation of the battery to be measured is obtained in a testing mode; E, an estimation error is calculated; F, if the estimation error is larger than a preset permissible error, the capacity attenuation model parameters are corrected and updated through the estimation error, and then the step B is carried out; G, if the estimation error is smaller than or equal to the preset permissible error, the capacity attenuation model parameters corrected the last time are determined to be the final capacity attenuation model parameters, the accurate capacity attenuation model corresponding to the battery to be measured is obtained, and then the relative capacity attenuation and the battery capacity of the battery to be measured are estimated in the future. The invention further discloses a system for estimating the battery capacity online. The method and system are convenient and easy to operate and high in accuracy.
Description
technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a battery capacity online estimation method and system. Background technique [0002] Against the backdrop of increasingly serious problems such as environmental pollution, energy crisis, and greenhouse effect, the development of new energy technologies has become a top priority. Among them, battery technology, as one of the new energy technologies, has attracted more and more attention from everyone. Lithium-ion power batteries, in particular, are developing very rapidly and have been widely used in electric vehicles, energy storage stations and other fields. However, as the battery is charged and discharged cyclically, the battery will gradually age and its performance will gradually decline, especially its capacity will gradually decrease. [0003] In actual situations, the reduction of battery capacity will affect the amount of energy stored inside the battery. For...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 韩雪冰欧阳明高卢兰光李建秋
Owner BEIJING KEY POWER TECH