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Power battery health state detection method, device and equipment and storage medium

A power battery and state of health technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of poor universality and inability to apply online estimation, and achieve the effect of improving accuracy

Pending Publication Date: 2022-03-25
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high accuracy, but it cannot be applied to online estimation, and requires specific experimental environment and conditions, and has poor universality.

Method used

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  • Power battery health state detection method, device and equipment and storage medium
  • Power battery health state detection method, device and equipment and storage medium
  • Power battery health state detection method, device and equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 It is a flow chart of a power battery health status detection method provided by Embodiment 1 of the present invention. This embodiment is applicable to online detection of power battery health status. This method can be implemented by the power battery health state detection device provided by the embodiment of the present invention Execution, the device can be implemented by software and / or hardware, and is usually configured in computer equipment, such as figure 1 As shown, the method specifically includes the following steps:

[0047] S101. Obtain state data during charging of the power battery.

[0048] In the embodiment of the present invention, the data to be evaluated under actual working conditions is collected at a certain sampling rate, and the data fields include reporting time, state of charge (State of Charge, SOC), cell voltage, temperature, current, and charge and discharge state etc., the embodiments of the present invention are not limited h...

Embodiment 2

[0102] Embodiment 2 of the present invention provides a power battery health state detection device, figure 2 A schematic structural diagram of a power battery health status detection device provided in Embodiment 2 of the present invention, as shown in figure 2 As shown, the device includes:

[0103] The data acquisition module 201 is used to acquire the state data during the charging process of the power battery;

[0104] A characteristic determination module 202, configured to determine the average temperature, average current and aging characteristics of the power battery during the charging process based on the state data;

[0105] A health state determination module 203 is configured to input the average temperature, the average current and the aging characteristics into a pre-trained ensemble tree model for processing to obtain the current state of health of the power battery.

[0106] In some embodiments of the present invention, the state data includes the current...

Embodiment 3

[0130] Embodiment 3 of the present invention provides a computer device, image 3 A schematic structural diagram of a computer device provided in Embodiment 3 of the present invention, such as image 3 As shown, the computer equipment includes:

[0131] Processor 301, memory 302, communication module 303, input device 304, and output device 305; the number of processors 301 in the mobile terminal may be one or more, image 3 Take one processor 301 as an example; the processor 301, memory 302, communication module 303, input device 304 and output device 305 in the mobile terminal can be connected through a bus or other methods, image 3 Take connection via bus as an example. The above processor 301, memory 302, communication module 303, input device 304 and output device 305 may be integrated on a computer device.

[0132] As a computer-readable storage medium, the memory 302 can be used to store software programs, computer-executable programs and modules, such as the module...

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PUM

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Abstract

The invention discloses a power battery health state detection method, device and equipment and a storage medium. After the state data of the power battery in the charging process in the actual working condition is obtained, the average temperature, the average current and the aging characteristics of the power battery in the charging process are determined based on the state data, and the average temperature, the average current and the aging characteristics are input into a pre-trained integrated tree model to be processed. And obtaining the current health state of the power battery. The pre-constructed integrated tree model is adopted to detect the health state of the power battery, and online detection of the health state of the power battery can be achieved. In addition, the average temperature, the average current and the aging characteristics of the power battery in the charging process in the actual working condition are used as the input of the integrated tree model, so that the universality and the accuracy of the detection result are improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of batteries, and in particular, to a method, device, equipment, and storage medium for detecting the health status of a power battery. Background technique [0002] The state of health (State Of Health, SOH) of the power battery refers to the ratio of the actual available capacity of the power battery to the calibrated rated capacity, and the SOH expresses the current capacity of the battery in the form of a percentage. For a new battery, its SOH value is generally greater than 100%. With the use of the battery, the battery continues to age, and the SOH gradually decreases. It is clearly stipulated in the IEEE standard 1188-1996 that when the capacity of the power battery When it drops to 80%, that is, when the SOH is less than 80%, the battery should be replaced. [0003] At present, the SOH experimental evaluation method is usually used to detect the health status of the power batte...

Claims

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Application Information

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IPC IPC(8): G01R31/392
CPCG01R31/392
Inventor 李浩文江吉兵徐宇虹潘安金
Owner HUBEI JINQUAN NEW MATERIALS CO LTD