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

Battery pack self-discharge detection method, battery pack controller and system

A battery pack, self-discharge technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of short circuit of positive and negative poles of single cells, increased self-discharge of battery cells, explosion of battery packs, etc., to ensure work safety. Effect

Active Publication Date: 2016-04-27
幂源(合肥)动力技术有限公司
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lithium batteries have no memory effect during charge and discharge cycles, iron particles may be mixed in the positive electrode material during the manufacturing process of lithium batteries.
During the charging and discharging process, iron particles and impurities may pierce the diaphragm and cause a short circuit between the positive and negative poles of the monomer, which will cause the self-discharge of the battery monomer to increase and the voltage will decrease. If the charging and discharging are not stopped in time, the battery pack may explode and catch fire, causing personal injury. or property damage

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
  • Battery pack self-discharge detection method, battery pack controller and system
  • Battery pack self-discharge detection method, battery pack controller and system
  • Battery pack self-discharge detection method, battery pack controller and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0045] It should be noted that like numerals and let...

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

Embodiments of the invention provide a battery pack self-discharge detection method, which is used for detecting self-discharge of a battery pack which is composed of a plurality of single battery bodies. The battery pack self-discharge detection method comprises the steps of: respectively detecting a voltage of each of the single battery bodies when the battery pack satisfies a first condition, wherein the voltage of each single battery body serves as a first reference voltage of each single battery body; respectively detecting a voltage of each of the single battery bodies when the battery pack satisfies a second condition, and the voltage of each single battery body serves as a second reference voltage of each single battery body; and determining that a self-discharge failure occurs in the single battery body corresponding to a first detection result when the first detection result obtained through calculation is greater than a first preset value. The battery pack self-discharge detection method can ensure that a faulty single battery body can be determined as soon as possible when the self-discharge failure of the battery occurs, thereby ensuring operation safety of the entire battery pack.

Description

technical field [0001] The invention relates to the field of battery detection, in particular to a battery pack self-discharge detection method, a battery pack controller and a system. Background technique [0002] Due to the advantages of low environmental pollution, no noise, and high energy, lithium batteries have been widely used as power sources in new energy vehicles. The power energy of new energy vehicles is composed of multiple battery cells connected in series and parallel to form a large-capacity battery pack. Although lithium batteries have no memory effect during charge and discharge cycles, iron particle impurities may be mixed in the cathode material of lithium batteries during the manufacturing process. During the charging and discharging process, iron particles and impurities may pierce the diaphragm and cause a short circuit between the positive and negative poles of the monomer, which will cause the self-discharge of the battery monomer to increase and th...

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): G01R31/36
CPCG01R31/396
Inventor 王保全黄秋桦王昌友周鹏
Owner 幂源(合肥)动力技术有限公司
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