Supercharge Your Innovation With Domain-Expert AI Agents!

Method and system for determining residual capacity of battery under all working conditions

A technology for determining the remaining capacity of a battery and a method for determining it, which can be used in the measurement of electrical variables, measurement of electricity, measuring devices, etc., and can solve the problem of low battery remaining capacity and SOC accuracy.

Active Publication Date: 2020-04-21
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF13 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the remaining battery capacity SOC obtained by the above method is not accurate

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for determining residual capacity of battery under all working conditions
  • Method and system for determining residual capacity of battery under all working conditions
  • Method and system for determining residual capacity of battery under all working conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0070] figure 1 It is a flow chart of the method for determining the remaining capacity of the battery under full working conditions in the embodiment of the present invention, figure 2 It is a schematic diagram of battery SOC estimation in the embodiment of the present invention, figure 2 (a) for T m The relationship diagram of battery voltage-battery current-battery remaining capacity under temperature, figure 2 (b) for T n The relationship diagram of battery voltage-battery current-battery remaining capacity under temperature, such as Figure 1-2 As shown, the present invention provides a method for determining the remaining capacity of a battery under full working conditions, the method comprising:

[0071] Step 101: Obtain historical monitoring information of the battery.

[0072] The historical monitoring information includes a temperature set and a battery voltage-battery current-battery remaining capacity relationship diagram established under full current cond...

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

No PUM Login to View More

Abstract

The invention discloses a method and system for determining the residual capacity of a battery under all working conditions. The method comprises the steps of acquiring historical monitoring information of a battery; acquiring a current monitoring temperature of the battery and a current current and voltage monitoring point of the battery; selecting first temperature data and second temperature data from the relational diagram; adopting an interpolation method to respectively calculate a first battery residual capacity of the current current and voltage monitoring point under the first temperature data and a second battery residual capacity of the current current and voltage monitoring point under the second temperature data; and determining the residual capacity of the battery at the current monitoring temperature according to the first temperature data, the second temperature data, the current monitoring temperature, the first residual battery capacity and the second residual battery capacity. By adopting the method and system provided by the invention, the estimation precision of the battery residual capacity SOC can be improved.

Description

technical field [0001] The invention relates to the technical field of battery remaining capacity, in particular to a method and system for determining the remaining capacity of a battery under all working conditions. Background technique [0002] The battery system is a very complex system, and its electrochemical reaction process presents highly nonlinear characteristics. Accurate estimation of battery SOC can effectively improve the energy utilization efficiency of electric vehicles, ensure the service life of battery packs, and optimize driving, which is of great significance to the development of electric vehicles. Due to the complex operating conditions of the battery on electric vehicles, its parameters are nonlinear. At the same time, the rated capacity of the battery will change with the number of cycles of the battery, temperature, charge and discharge current and other factors. These reasons make the estimation of the vehicle battery SOC become very difficult. ...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/388
CPCG01R31/388
Inventor 王立业王丽芳廖承林张玉旺张志刚张文杰
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com