Voltage and current sampling frequency and filtering time window selection method for battery management system

A battery management system and sampling frequency technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., to achieve the effects of eliminating randomness, reducing processing performance requirements, and ensuring estimation accuracy

Active Publication Date: 2021-08-13
SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD +1
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the shortcomings of the existing methods, the present invention proposes a method for selecting the voltage and current sampling frequency and filtering time window of the battery management system

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
  • Voltage and current sampling frequency and filtering time window selection method for battery management system
  • Voltage and current sampling frequency and filtering time window selection method for battery management system
  • Voltage and current sampling frequency and filtering time window selection method for battery management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041]The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0042] figure 1 It is a flowchart of a method for selecting a voltage and current sampling frequency and a filtering time window of a battery management system in an embodiment of the present invention. refer to figure 1 As shown, the battery management system voltage and current sampling frequency and filtering time window selection method provided in this embodiment includes the following steps:

[0043] S100, acquiring the frequency component of the current and voltage of the battery in the ba...

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 provides a voltage and current sampling frequency and time window selection method for battery management system. The method comprises the steps that frequency components of current and voltage of a battery in a battery energy storage system are acquired; proper voltage and current sampling frequency and filtering time window are selected according to the frequency components of the current and the voltage of the battery, so that the SOC estimation deviation of the battery is minimum. According to the invention, voltage and current sampling can be carried out with the frequency lower than the sampling theorem requirement, and the estimation precision of the SOC is not affected. And the estimation precision of the SOC algorithm and the credibility of the battery management system can be ensured while the requirements on the rate performance of a hardware sampling circuit and the processing performance of a processor are reduced.

Description

technical field [0001] The present invention relates to the field of battery management, in particular to a method for selecting sampling frequencies and time windows of voltage and current signals of a battery management system. Background technique [0002] In the battery energy storage application of electric vehicles, power grids and micro-grids, the battery management system (Battery Management System, BMS) is an indispensable and important link to achieve safety, reliability and full utilization of batteries. BMS monitors physical quantities such as battery terminal voltage and charge and discharge current in real time, and uses corresponding algorithms to estimate the state of charge (State of Charge-SOC) of the lithium battery cells in the battery pack, based on which it serves as a basis for scientific decision-making on battery control and protection. Based on this, the purpose of maximizing battery performance, improving battery efficiency, and prolonging battery ...

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): G01R31/382G01R31/367
CPCG01R31/382G01R31/367
Inventor 李勇琦陈满凌志斌彭鹏朱焕杰胡振恺李毓烜雷旗开梁靓
Owner SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap