Power battery balancing device and method

A technology for power battery packs and equalization devices, which is applied to battery circuit devices, circuit devices, current collectors, etc., can solve the problems of poor equalization effect and long equalization time, and achieve the effect of reducing equalization time and improving equalization efficiency

Inactive Publication Date: 2013-10-02
STATE GRID CORP OF CHINA +3
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a power battery equalization device and method to balance power batteries of different materials, different capacities, and different numbers of strings, and solve the problems of poor equalization effect and long equalization time of existing power batteries

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
  • Power battery balancing device and method
  • Power battery balancing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be described in further detail below with reference to the accompanying drawings.

[0021] like figure 1 As shown, the power battery pack includes n single cells B connected in series 1 , B 2 …B n , corresponding to each single battery B n , there is an equalization module U n It is connected in parallel with it to form an independent charging circuit. Equalization module U 1 with single battery B 1 Constitute the charging circuit 1; U 2 with single battery B 2 Form the charging circuit 2; U n with single battery B n A charging circuit n is formed; each equalizing module is interconnected through the CAN bus, and is monitored by the host computer. The input of each equalizing module is connected to the same DC power supply, and the output of each equalizing module is equipped with a relay. Before the equalization command is started, The relay is open. The equalization module includes a control unit and a DC / DC module. The control ...

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 power battery balancing device and method. The device includes balancing modules of battery cells, which are used for the balancing operation of all battery cells, wherein each balancing module is connected in parallel with the corresponding battery cell to form a battery cell charging circuit; all the balancing modules are connected mutually through a CAN bus and are connected to an upper computer through the CAN bus; a DC power supply is connected to the input of each balancing module; a normally open relay is connected in series with an output end of each balancing module. According to the invention, the balancing modules are the same in structure, mutually and independently control the battery cells in a one-to-one correspondence manner, the balancing modules of different amount can be equipped as per the battery packs of different series for balancing, different balancing strategies can be equipped with DC/DC modules in the balancing modules conveniently and flexibly, the balancing requirement of the battery packs of different capacities and nominal voltages of battery cells can be met through setting the balance voltage and balance current, and the balance modules of all the battery cells can be used for balancing simultaneously, thereby saving the balancing time and improving the balancing efficiency.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles and new energy power batteries, and relates to a universal power battery pack equalizing device and method. Background technique [0002] With the current global auto industry facing the huge challenges of financial crisis and energy and environmental issues, there has been a broad international consensus on the development of electric vehicles, the electrification of the vehicle energy power system, and the promotion of the strategic transformation of the traditional auto industry. As a key technology of electric vehicles, power batteries have played a vital role in the development of the entire electric vehicle industry. [0003] At present, the main bottleneck hindering the development of power batteries is the power battery management system. Usually, power batteries use multiple single cells in series to supply power to the car. The charging and discharging of each single battery i...

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 宋海飞曹亚张向炜周长春邓长吉常志国邓思维刘建鹏崔占平王宁
Owner STATE GRID CORP OF CHINA
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