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

Lithium-ion battery matching method

A lithium-ion battery and battery technology, applied in the field of lithium-ion batteries, can solve problems such as incompatibility, inability to guarantee the performance of battery modules, and low accuracy, so as to achieve good performance, improve and improve the quality of grouping, and improve the use of The effect of longevity

Active Publication Date: 2017-01-11
中国南方电网有限责任公司调峰调频发电公司 +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This matching method does not match the actual use status, the accuracy is low, and the performance of the battery module cannot be guaranteed.

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
  • Lithium-ion battery matching method
  • Lithium-ion battery matching method
  • Lithium-ion battery matching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0024] Such as figure 1 As shown, the lithium-ion battery assembly method of the embodiment of the present invention includes the following steps:

[0025] Step S1, discharging a plurality of lithium-ion batteries to a cut-off voltage, and then allowing the plurality of lithium-ion batteries to stand still for a first predetermined time. Since the lithium-ion battery stores a certain amount of electricity when it is placed, the electricity stored in the lithium-ion battery can be discharged through this step. The first predetermined time is preferably 10-20 minutes, further, the first predetermined time is preferably 10 minutes.

[0026] Step S2, charging a plurality of lithium-ion batteries to the cut-off volta...

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 relates to a lithium ion battery group matching method, which includes: S1. subjecting a plurality of lithium ion batteries to electric discharge to cut-off voltage, and then performing standing; S2. conducting constant current charging on the plurality of lithium ion batteries to cut-off voltage, recording the charging capacity C1, the charging mean voltage V1 and the first voltage change value delta E1 before and after charging, and then conducting laying; S3. Performing constant-current discharge on the plurality of lithium ion batteries to cut-off voltage, measuring the discharge capacity C2, the discharge mean voltage V2 and the second voltage change value delta E2 before and after discharge, and then conducting laying; S4. conducting charging on the plurality of lithium ion batteries, then performing laying, and measuring the voltage drop delta V and internal resistance R; and S5. according to C1, V1, delta E1, C2, V2, delta E2, delta V and R, carrying out group matching based on grading standards. Through the lithium ion battery group matching method provided by the invention, group matching can better coincide with the actual state, and the use performance of a battery module can be better, thereby realizing safe and efficient use of the battery module.

Description

technical field [0001] The invention relates to lithium ion batteries, in particular to a lithium ion battery assembly method. Background technique [0002] With the impact of the global energy and environmental crisis becoming more and more serious, lithium-ion batteries are increasingly used in energy storage stations and electric vehicles due to their excellent performance. In order to achieve the applicable voltage and capacity, it is inevitable that the battery needs to Expand and boost through parallel and series connections. The difference in the consistency of the same module battery will cause the performance of the single battery to not be fully utilized, thereby affecting the performance of the module battery and even causing safety problems. In order to keep the batteries of the same module in good consistency, it is necessary to examine the different characteristics of different batteries before assembly to ensure the consistency of batteries in the same module...

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 Patents(China)
IPC IPC(8): H01M10/42
CPCY02E60/10
Inventor 郭海峰张百华陈满李勇琦霍健权蔡惠群詹世英李海军陈晓龙严章术马美品魏银仓
Owner 中国南方电网有限责任公司调峰调频发电公司
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