Failure analysis method and device for battery of energy storage power station
An energy storage power station and failure analysis technology, applied in the field of energy storage, can solve problems such as fire accidents, high difficulty of fire extinguishing, and impact on the energy efficiency of energy storage power stations
Active Publication Date: 2020-10-30
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
View PDF18 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, as the number of charging and discharging increases, the energy storage battery faces the risk of capacity decline or even failure, which will affect the energy efficiency of the energy storage power station at the slightest level, and may cause a fire accident at the worst.
Due to the large scale of energy storage power stations, it is extremely difficult to extinguish fires after a fire occurs, resulting in extremely high direct and indirect losses, and it is easy to cause overall fluctuations in the power grid
At present, the battery failure assessment of large-scale electrochemical energy storage power stations has not been fundamentally resolved.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] The present invention will be further described in detail below in conjunction with specific implementation methods and accompanying drawings.
[0032] Such as figure 1 As shown, the present invention combines the online evaluation of the state of the energy storage battery with the offline diagnosis of the energy storage battery to realize the failure analysis of the battery. The battery failure analysis device of the energy storage power station of the present invention includes a health degree analysis module, a capacity correction module, and a diagnosis module. The health analysis module is used to evaluate the state of the energy storage battery online, and use the data-driven model to analyze the health of various parameters of the energy storage battery. The capacity correction module is used to analyze the heating characteristics of the energy storage battery cell through the electrochemical mechanism model when the health of at least one parameter is lower th...
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
Login to View More Abstract
The invention discloses a failure analysis method and device for a battery of an energy storage power station. The method comprises the steps of (1) carrying out the online evaluation of the state ofthe energy storage battery, and analyzing the health degree of each parameter of an energy storage battery monomer through a data drive model; (2) when the health degree of at least one parameter is lower than a set threshold value, carrying out heating characteristic analysis on the energy storage battery monomer through an electrochemical mechanism model, and carrying out capacity correction andactive equalization on the energy storage battery monomer according to an analysis result; (3) if it is still detected that the energy storage power station continues to send out the online alarm signal after processing in the step (2), removing the deteriorated energy storage battery monomer; and (4) carrying out offline diagnosis to find out a battery failure reason. According to the method, state online evaluation and performance offline diagnosis are combined, the possibility of battery monomer failure is semi-quantitatively analyzed through state online evaluation, the battery failure degree is quantitatively detected through performance offline diagnosis, and the energy storage power station battery failure analysis method is established.
Description
technical field [0001] The invention relates to energy storage technology, in particular to a failure analysis method and device for batteries in energy storage power stations. Background technique [0002] With the promulgation of the "Guiding Opinions on Promoting the Development of Energy Storage Technology and Industry" in 2017, the application scale of batteries in the field of electrochemical energy storage has rapidly expanded, and lithium-ion batteries and sodium-ion batteries have successively achieved demonstration applications in the field of energy storage. However, as the number of charging and discharging increases, the energy storage battery faces the risk of capacity decline or even failure, which will affect the energy efficiency of the energy storage power station at the slightest level, and may cause a fire accident at the worst. Due to the large scale of energy storage power stations, it is extremely difficult to extinguish fires after a fire occurs, resu...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/367G01R31/392
CPCG01R31/367G01R31/392Y02E60/10
Inventor 陶风波孙磊郭东亮尹康涌肖鹏马勇吴鹏刘洋付慧单光瑞陆云才李建生王胜权王同磊林元棣
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST