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

Active equalization architecture and active equalization method for battery management system

A technology of battery management system and active equalization, which is applied to electric vehicles, battery circuit devices, collectors, etc., and can solve problems such as failure to reach design capacity and impact

Active Publication Date: 2019-05-03
国电投天启(广东)智慧能源科技有限责任公司
View PDF11 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the cell capacity in the container is inconsistent, the charging and discharging capacity of the entire energy storage system will be affected and the design capacity will not be reached.

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
  • Active equalization architecture and active equalization method for battery management system
  • Active equalization architecture and active equalization method for battery management system
  • Active equalization architecture and active equalization method for battery management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0029] Such as figure 1 , figure 2 As shown, the present invention provides an active balancing architecture of a battery management system, including: a battery pack cluster 10 , a BMU20 , a BCMU30 , and a BAMS40 . in:

[0030] The battery pack cluster 10 includes a plurality of battery packs 11 connected in series, and the battery pack 11 is composed of a plurality of battery cells connected in series; generally, there are more than two battery pack clusters 10 .

[0031] A plurality of BMU20 (Battery Management Unit, battery management unit), is connected with described battery pack, more specifically, a BMU20 is connected with a battery pack 11, and BMU is used for collecting the relevant data of each cell in described battery pack, Calculate the SOC and SOH value of each cell, manage the cell balance inside each PACK based on this, and actively balance the un...

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 provides an active equalization architecture and method for a battery management system. The active equalization architecture for the battery management system includes a batterypack cluster including a plurality of battery packs connected in series, a plurality of battery management units correspondingly connected to the battery packs one by one, a battery pack control unitwhich is connected to the battery management units which are connected to the battery packs in the same battery pack cluster, and a battery cluster control unit which is connected to the battery packcontrol unit and the battery pack cluster. The active equalization method for the battery management system includes the steps of (S1) obtaining cell voltage values of batteries in the battery pack and performing intra-pack equalization according to a preset rule, and (S2) calculating a cell average value of the entire battery pack cluster, comparing cells with a highest positive deviation and ahighest negative deviation, and performing inter-pack equalization if a difference value exceeds a second value. According to the invention, the consistency of thousands of batteries in an operating environment in a container can be ensured, and therefore, the discharge capacity of an entire container energy storage system is increased.

Description

technical field [0001] The invention belongs to the field of large-scale lithium battery energy storage, and in particular relates to an active equalization framework and an active equalization method of a battery management system. Background technique [0002] Large-scale energy storage systems require thousands of batteries in series and parallel to form the capacity required by the design. At present, large-scale energy storage systems install battery cells connected in series and parallel in the container. The battery group in the container is mainly composed of three parts. The battery cells are connected in series to form a battery pack (PACK), and the PACK is connected in series to the energy storage converter. The rated DC side voltage forms a cluster of CLUSTER, and finally multiple clusters are installed in parallel to form an energy storage system in the container. If the cell capacity in the container is inconsistent, the charging and discharging capacity of 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): H02J7/00
Inventor 余婉仪沈聪钟华兵
Owner 国电投天启(广东)智慧能源科技有限责任公司
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