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A battery performance consistency test method and system

A technology for battery performance and testing methods, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of not fully reflecting the performance of lithium batteries, single data, etc., to achieve rich test data, high collection accuracy, and flexible implementation. handy effect

Active Publication Date: 2015-12-02
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the data tested by this test method is single and cannot fully reflect the performance of lithium batteries.

Method used

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  • A battery performance consistency test method and system
  • A battery performance consistency test method and system
  • A battery performance consistency test method and system

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Embodiment Construction

[0018] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0019] figure 1 It is a flow chart of the battery performance consistency test of the embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0020] Step S101, charging and discharging the battery string;

[0021] Step S102, obtaining the working state parameters of the battery string;

[0022] Step S103, obtaining the working state data of the single cells in the battery string;

[0023] Step S104, generating battery performance consistency test results according to the working state parameters of each battery string and the working state data of the individual batteries.

[0024] In this embodiment, obtaining the working state data of the single cells in the battery string includes: the highest voltage U of the single cells du...

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Abstract

The invention discloses a method and system for testing consistency of performances of batteries. The method comprises the following steps: carrying out charging and discharging on battery pack strings; acquiring working state parameters of the battery pack strings; acquiring working state data of single batteries in the battery pack strings; according to the working state parameters of each battery pack string and the working state data of the single batteries, generating a battery performance consistency testing result. By the method and system for testing consistency of the performances of the batteries, which is disclosed by the invention, performance testing of the energy storage battery pack strings on various aspects, such as battery dynamic voltage consistency testing, battery voltage curve consistency testing, battery dynamic temperature consistency testing, and battery charge-discharge depth consistency testing, is implemented; testing data is rich; acquisition accuracy is high; the method and the system are flexible and convenient to implement; a user can accurately, conveniently and rapidly evaluate the performances of the energy storage batteries.

Description

technical field [0001] The invention relates to battery performance testing, in particular to a battery performance consistency testing method and system. Background technique [0002] At present, lithium-ion batteries are being gradually applied to new energy power generation systems, aiming to smooth the impact of wind power and solar power on the grid. However, the capacity of the battery will decrease as the number of times the battery is used increases, and the performance will also deteriorate. The decline in performance directly weakens the role of stabilizing new energy power generation. Therefore, it is particularly necessary to accurately obtain the performance of lithium-ion battery packs under field application conditions. At present, due to the large number of battery strings used in energy storage systems and their large size, it is impossible to disassemble the batteries and test parameters such as capacity with professional equipment like electric vehicle o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 陈豪白恺刘辉温家鹏潘天高明杰李娜李智石世前梁尚超张滢
Owner STATE GRID CORP OF CHINA
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