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

Battery cluster online balancing method and system in battery energy storage system

A technology of battery energy storage system and battery cluster, which is applied in secondary batteries, secondary battery testing, secondary battery repair/maintenance, etc. It can solve problems such as poor accuracy, unbalanced electric energy, and affecting system charge and discharge capacity, and achieve Intelligent and simple operation, improved utilization and high adjustment accuracy

Active Publication Date: 2019-08-16
JIANGXI GANFENG BATTERY TECH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the secondary battery energy storage system, once a battery failure is found, the energy storage system will shut down as a whole and wait for maintenance, which greatly reduces the utilization rate of the battery system
[0004] The battery maintenance of the secondary battery energy storage system is easy to cause the power imbalance between the battery clusters. To achieve the balance, the system needs to be shut down and the charging and discharging of each battery cluster must be manually adjusted. This is not only time-consuming and laborious, but also has poor accuracy and affects the overall system. charge and discharge capacity

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 cluster online balancing method and system in battery energy storage system
  • Battery cluster online balancing method and system in battery energy storage system
  • Battery cluster online balancing method and system in battery energy storage system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1-3 As shown, a battery energy storage system includes a confluence detection unit 300, a detection protection unit 400, a human-computer interaction unit 200, a general control unit 100, a battery cluster balancing module 500, and an energy storage unit 600. The confluence detection unit 300 , the detection protection unit 400 , the human-computer interaction unit 200 , the battery cluster balance module 500 and the energy storage unit 600 are all electrically connected to the general control unit 100 ;

[0039] The energy storage unit 600 is composed of several battery clusters connected in parallel, which are battery cluster 1, battery cluster 2...battery cluster a...battery cluster b...battery cluster n;

[0040] The confluence detection unit 300 is used to detect the overall voltage and current information of each battery cluster after confluence, and upload the overall voltage and current information to the general control unit;

[0041] The detec...

Embodiment 2

[0046] This embodiment is a further optimization made on the basis of Embodiment 1. Specifically, the battery cluster balancing module 500 is composed of several electronic switches, and the electronic switches are arranged between every two battery clusters, respectively K 1-2 、K 1-a …K 1-b …K 1-n …K a-(a+1) …K a-b …K a-n …K b-(b+1) …K b-n …K n-(n+1) …K (n-1)-n ; 1a-bIndicates that battery cluster a is connected to battery cluster b, where K a-b with K b-a For the same switch, the electronic switch used in this embodiment is a high-frequency electronic switch.

Embodiment 3

[0048] This embodiment is a further optimization made on the basis of Embodiment 2. Specifically, each battery cluster includes a number of battery sections connected in series, and each battery section is also equipped with a detection unit for detecting the current of the battery section, voltage information.

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 battery energy storage system, which comprises a confluence detecting unit, a detecting and protecting unit, a human-machine interaction unit, a master control unit, a battery cluster balancing module and an energy storage unit. The confluence detecting unit, the detecting and protecting unit, the human-machine interaction unit, the battery cluster balancing module and the energy storage unit are all in electrical signal connection to the master control unit. The invention also discloses an online balancing method for the battery cluster in the system. The balancing method solves the problem in the prior art that the energy storage system is required to be shut down to wait for maintenance, and greatly improves the utilization rate of the battery system.

Description

technical field [0001] The invention relates to the field of secondary battery energy storage, in particular to an online balancing method and system for battery clusters in a battery energy storage system. Background technique [0002] Energy storage is an important part and key technology of smart grid, renewable energy system and energy Internet. The micro-grid energy storage solution can be applied to peak regulation and frequency regulation of energy storage power stations, or the use of cascade batteries, emergency power supply occasions, and some commercial applications for peak shaving and valley filling. [0003] At present, in the secondary battery energy storage system, once a battery failure is found, the energy storage system will shut down as a whole and wait for maintenance, which greatly reduces the utilization rate of the battery system. [0004] The battery maintenance of the secondary battery energy storage system is easy to cause the power imbalance betw...

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): H01M10/42H01M10/48
CPCH01M10/425H01M10/4285H01M10/48Y02E60/10
Inventor 沈海博丁凯程军华黄勇良占韬欧阳水兵吴田伟李芳芳
Owner JIANGXI GANFENG BATTERY TECH
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