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Detection method for health status of energy storage device

A technology of health status and energy storage equipment, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as differences

Active Publication Date: 2014-10-29
天津中科先进技术产业有限公司
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Problems solved by technology

[0010] However, in addition to the number of charge and discharge times, the temperature of the power environment and the changes in various charge and discharge currents also have a greater impact on the health status of the energy storage device. Although method 1 can best reflect the actual health status, to obtain the current battery capacity, The battery must be fully discharged and then fully charged. This process cannot be carried out in the use of energy storage equipment and is only suitable for laboratories.
Method 2 only measures the health status through static parameters, and the test results are quite different from the actual situation

Method used

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  • Detection method for health status of energy storage device
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  • Detection method for health status of energy storage device

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Embodiment Construction

[0023] like figure 1 As shown, it is a flow chart of steps of a method for detecting the health status of an energy storage device in a preferred embodiment of the present invention, including the following steps:

[0024] Step S101 , using the ratio of the current capacity to the nominal capacity as a reference, under constant temperature and constant current conditions, through multiple charge and discharge, to detect and obtain the impact parameters of the charge and discharge times on the health status of the energy storage device.

[0025] That is, under the condition of constant ambient temperature and constant charge and discharge current, the impact of charge and discharge times on the health status is detected.

[0026] Step S102 , using the ratio of the current capacity to the nominal capacity as a reference, and under constant current conditions, through a plurality of different charging temperatures, to detect and obtain parameters affecting the health status of th...

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Abstract

Disclosed is a detection method for a health status of an energy storage device. The detection method comprises the steps of detecting and obtaining influencing parameters of the number of charging and discharging on the health status of the energy storage device under conditions of the constant temperature and current by taking a ratio of the current capacity to the nominal capacity as a reference; detecting and obtaining influencing parameters of a charging temperature value on the health status of the energy storage device under constant temperature through a plurality of charging and discharging currents of different volatility; and fitting the number of charging and discharging, a charging temperature average value, charging and discharging current half volatility endpoint and average values and the corresponding influencing parameters, and obtaining an influence function of the number of charging and discharging, the charging temperature average value, the charging and discharging half volatility endpoint and average values on the health status of the energy storage device. Through the above method, the influences of the temperature and current are considered comprehensively and thus the more accurate health status can be obtained.

Description

technical field [0001] The invention relates to a detection method for energy storage equipment, in particular to a detection method for the health status of energy storage equipment. Background technique [0002] At present, the research and testing of energy storage devices (energy storage batteries and power batteries, etc.) are getting more and more in-depth, and the chemical characteristics mainly include the research on their state of charge (SOC) and state of health (SOH). For the health status of energy storage equipment, its capacity parameters or the number of charge and discharge times are used as its evaluation indicators, and the following test parameters and test environments are used: [0003] method one: SOH ( % ) = C now C 0 × 100 % [0004] Among them, SOH(%)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 王大龙吴正斌朱红磊王建
Owner 天津中科先进技术产业有限公司
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