Unlock instant, AI-driven research and patent intelligence for your innovation.

A battery balancing control method and system based on a* algorithm

A battery equalization and control method technology, which is applied in the direction of charge equalization circuit, secondary battery, battery overcharge protection, etc., can solve the problems of failure to comprehensively consider key indicators, low voltage, etc., to improve the difference, reduce energy loss, The effect of improving the utilization rate

Active Publication Date: 2018-09-07
UNIV OF SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. The voltage of most battery cells is the same, and the voltage of individual cells is too low, that is, most of them are the same, and a few are lower
The above two methods fail to take these key indicators into account

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 battery balancing control method and system based on a* algorithm
  • A battery balancing control method and system based on a* algorithm
  • A battery balancing control method and system based on a* algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Aiming at the problem of battery balancing, the present invention considers that due to the efficiency of the transformer, there will be some energy loss during the balancing process, and the lost energy usually comes from copper loss, eddy current loss, hysteresis loss and the like. During the equalization process, we pay more attention to the loss of battery capacity. The greater the loss of battery capacity, the greater the cost in the equalization process. In order to clearly show the capacity loss in the equalization process, SOC is used here to reflect the consistency difference of the battery pack, and SOC is used as the equalization variable to digitize the capacity lost in the equalization process.

[0032] figure 1 A schematic structural diagram of a battery balancing system applied to the battery balancing control method based on the A* algorithm of the present invention. As shown in the figure, the battery balancing system is used for balancing control of a...

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 provides an A* algorithm-based battery equalization control method and system to conduct equalization control for a battery formed by a plurality of cell units. The method includes searching a path from an initial node to a target node under constraint conditions of an equalization target to make the cost of the path the smallest, wherein the nodes indicate vectors of the state of each cell unit, and the cost indicates equalization time or energy loss. Bidirectional equalization of cell units and a general battery is achieved, the cost is low, and the equalization efficiency is high. The utilization rate of a battery module and an energy storage system are improved. The maintenance cost of a battery is reduced.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a battery balancing control method and system, in particular to a battery balancing control method and system based on an A* algorithm. Background technique [0002] With the intensification of environmental pollution, new energy technologies such as electric vehicles have received worldwide attention and rapid development, among which battery energy storage has become a bottleneck in the development of electric vehicles. Due to the requirements of the driving range of electric vehicles and the limitation of low voltage and low capacity of the battery unit itself, a large number of battery units are required to be connected in series in the power battery pack to provide the required driving voltage and driving ability. However, due to the limitations of existing manufacturing technology and the inevitable differences in external environments such as temperature, the...

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): H02J7/00H01M10/44
CPCH01M10/441H02J7/0014H02J7/00302H02J7/00306Y02E60/10
Inventor 张陈斌沈镇董广忠魏婧雯解竞陈宗海
Owner UNIV OF SCI & TECH OF CHINA