A kind of balance control method of lithium-ion battery pack

A lithium-ion battery pack and lithium-ion battery technology, applied in the field of control, can solve problems restricting the application of lithium-ion battery packs, etc.

Inactive Publication Date: 2016-01-13
扬州道爵新能源发展有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion batteries have the following excellent performance characteristics: high voltage, large specific energy, long cycle life, good safety performance, and small self-discharge. However, due to the modularization of lithium-ion battery packs, safety performance and New problems such as battery cycle life, if these problems are not solved in time, it will restrict the application of lithium-powered battery packs in new energy vehicles

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
  • A kind of balance control method of lithium-ion battery pack
  • A kind of balance control method of lithium-ion battery pack
  • A kind of balance control method of lithium-ion battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. While the invention will be described in conjunction with the preferred embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, the invention is to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims.

[0047] Battery pack balancing control scheme:

[0048] Step 1, data processing and monomer SOC calculation. The present invention combines the Ah method to calculate the method for remaining capacity, defines the calculation expression of lithium-ion battery monomer SOC as follows:

[0049]

[0050] In the formula, SOC(t) is the real-time SOC value of the single battery, and SOC(t 0 ) is the initial SOC value, h is the charge and discharge coefficient, and I(t) is the battery charge and disc...

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 balance control method of a lithium-ion battery set. Internal parameters of each single battery of the battery set and an accurately estimated SOC value serve as the reference quantity of a battery set balance control algorithm; the safety problem possibly caused by overcharging and overdischarging of the battery set is resolved through the balance control scheme, the service life of the battery set is prolonged, and the performance of the battery set is improved. Through the balance control method of the lithium-ion battery set, balance control can be carried out on the work state and performance of the lithium-ion battery set, an active balance control method based on the SOC estimation value is built, and the intelligent balance control method of the lithium-ion battery set is designed through the electronic technique and the computer control technology. The implementation of the balance control method of the lithium-ion battery set has great significance for promoting the popularization of lithium-ion batteries, improving the energy storage capacity and the utilization rate of the lithium-ion battery set, and prolonging the cycle life of the lithium-ion battery set, overcomes the defects of a lithium-ion battery set balance control system, and promotes the application and popularization of the new energy electric car technology based on lithium-ion batteries.

Description

technical field [0001] The present invention relates to a control method, more specifically, it relates to a lithium-ion battery group balance control method. Background technique [0002] The new energy industry is a strategic and leading industry of the national economy, which plays a very important role in stimulating economic growth, adjusting industrial structure, promoting industrial transformation and upgrading, and breaking through energy bottleneck constraints. Since the 1990s, lithium-ion batteries, as one of the development directions of the new energy industry, have received more and more attention from researchers at home and abroad, and have made significant research progress. During the Eleventh Five-Year Plan period, the research and development of power energy storage lithium-ion batteries was listed as a major scientific and technological project, with a funding intensity of nearly 1 billion yuan. At present, domestic and foreign are committed to researchi...

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): H02J7/00
Inventor 汪秋婷赵波姜银珠戚伟庞文尧
Owner 扬州道爵新能源发展有限公司
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