Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Systems and methods for determining cell capacity values in a multi-cell battery

一种电池单元、容量值的技术，应用在电池/燃料电池控制装置、电池电路装置、电气元件等方向，能够解决不能识别电池单元、歪曲总体结果等问题

Active Publication Date: 2012-11-14
GM GLOBAL TECH OPERATIONS LLC
View PDF6 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional techniques only estimate battery capacity at the pack level and / or include many sources of error
This technique provides only limited information about the cells in aggregate and does not identify defective cells that may be performing poorly
Including these cells in capacity estimates at the group level can also skew the overall results about the group

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
  • Systems and methods for determining cell capacity values in a multi-cell battery
  • Systems and methods for determining cell capacity values in a multi-cell battery
  • Systems and methods for determining cell capacity values in a multi-cell battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] As noted above, current techniques for determining battery capacity focus on the pack level and fail to account for individual cell differences. According to one aspect of the present invention, capacity estimation at the cell level allows for the determination of more information about battery health because underperforming or defective cells can be identified. Additionally, identifying underperforming or defective cells allows corrective action to be taken by regulating the charging and discharging of individual cells.

[0079] now refer to figure 1 , which shows a vehicle 100 according to an exemplary embodiment. The vehicle 100 includes a battery pack 102 that provides electrical power to propel the vehicle 100 using a hybrid electric or pure electric propulsion system. The battery pack 102 may include a plurality of battery cells, modules, or collections of discrete batteries that work together to provide propulsion power to the vehicle 100 . The vehicle 100 al...

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 present invention relates to systems and methods to determine cell capacities of a vehicle battery pack. Especially, provided are systems and methods to determine cell capacities of a vehicle battery pack. Cell capacities may be determined using state of charge (SOC) estimates for the cells and a charge count for the battery pack. The SOC estimates may be determined when the SOC of the battery pack is below a lower threshold and above an upper threshold. Error values may also be generated for the cell capacity values.

Description

technical field [0001] The present invention relates generally to determining cell capacity in a multi-cell battery, and more particularly to determining a cell capacity value based on a state of charge of the battery. Background technique [0002] Automotive technology is rapidly advancing in the search for alternatives to gasoline as the primary energy source in vehicle propulsion systems. Many of these advances utilize hybrid electromechanical systems that recapture some of the mechanical energy from combustion engines as stored electrical energy, or pure electric propulsion systems that eliminate the need for internal combustion engines entirely. With these advances, the storage and management of electrical energy in vehicles has become especially important. [0003] State of Charge (SOC), relative to battery capacity, is a common measure of the amount of charge available in a battery. In automotive applications utilizing pure electric or hybrid electric propulsion sys...

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): G01R31/36B60L11/18
CPCG01R31/3624Y02T10/7061H02J7/044B60L11/1866Y02T10/7005B60L58/12B60L58/22G01R31/3842H02J7/00716Y02T10/70H02J7/04
Inventor S.谢菲尔
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com