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Battery health state determination method and device, electronic equipment and storage medium

A technology for determining the state of health of a battery and a method for determining it, which can be applied to measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the problems of insufficient accuracy of battery state of health estimation, and achieve the effect of accurate state of health.

Pending Publication Date: 2022-07-22
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method, device, electronic equipment and storage medium for determining the state of health of a battery, so as to solve the problem of insufficient accuracy in calculating the state of health (SOH) of the battery

Method used

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  • Battery health state determination method and device, electronic equipment and storage medium
  • Battery health state determination method and device, electronic equipment and storage medium
  • Battery health state determination method and device, electronic equipment and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0047] This embodiment provides a method for determining the state of health of a battery, figure 1 The first embodiment of the present invention provides a flowchart of a method for determining the state of health of a battery. This embodiment can be applied to the accurate estimation of the state of health (SOH) of a battery, and the method can be performed by a device for determining the state of health of a battery. , the device can be implemented in the form of hardware and / or software. like figure 1 As shown, the method includes:

[0048] S101. Acquire the charge-discharge current, the ambient temperature, and the state of charge after the end of the charge-discharge cycle of the battery for each charge-discharge cycle.

[0049]Among them, one charge-discharge cycle includes one charge and one discharge. The charging and discharging current refers to the current during the charging and discharging process of the battery, including the charging current and discharging ...

Embodiment 2

[0059] This embodiment is based on the above-mentioned embodiment, and the above-mentioned embodiment is optimized. Specifically, the attenuation of each charge-discharge cycle is determined according to the charge-discharge current of each charge-discharge cycle, the ambient temperature, and the state of charge after the end of the charge-discharge cycle. The optimization is as follows: determine the first sub-attenuation factor of each charge-discharge cycle according to the state of charge after each charge-discharge cycle; determine the second sub-attenuation of each charge-discharge cycle according to the ambient temperature of each charge-discharge cycle factor; determine the third sub-attenuation factor of each charge-discharge cycle according to the current average rate of each charge-discharge cycle; according to the first sub-attenuation factor, the second sub-attenuation factor and the three sub-attenuation factors of each charge-discharge cycle The product of the de...

Embodiment 3

[0078] image 3 This is a schematic structural diagram of an apparatus for determining the state of health of a battery provided by Embodiment 3 of the present invention. like image 3 As shown, the device S300 for determining the state of health of the battery includes:

[0079] The charging and discharging parameter acquisition module S301 is used to acquire the charging and discharging current of each charging and discharging cycle of the battery, the ambient temperature and the state of charge after the end of the charging and discharging cycle;

[0080] An attenuation factor determination module S302, configured to determine the attenuation factor of each charge and discharge cycle according to the charge and discharge current of each charge and discharge cycle, the ambient temperature and the state of charge after the end of the charge and discharge cycle;

[0081] The state of health determination module S303 is configured to determine the state of health of the batte...

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Abstract

The embodiment of the invention discloses a method and device for determining the health state of a battery, electronic equipment and a storage medium. The method for determining the health state of the battery comprises the steps that the charging and discharging current and the environment temperature of each charging and discharging cycle of the battery and the state of charge after the charging and discharging cycles are finished are obtained; determining an attenuation factor of each charge-discharge cycle according to the charge-discharge current of each charge-discharge cycle, the environment temperature and the charge state after the charge-discharge cycle is ended; and determining the health state of the battery according to the attenuation factor of each charge-discharge cycle, the current charge-discharge cycle number of the battery and the total charge-discharge cycle number of the battery. When the health state of the battery is calculated, the charging and discharging current of each charging and discharging cycle, the environment temperature, the charge state after charging and discharging, the current number of charging and discharging cycles and the total number of charging and discharging cycles of the battery are comprehensively considered, so that the determined health state of the battery is more accurate and better conforms to the actual health state of the battery.

Description

technical field [0001] The present invention relates to the technical field of batteries, and in particular, to a method, an apparatus, an electronic device and a storage medium for determining the state of health of a battery. Background technique [0002] Faced with severe problems such as shortage of resources and environmental pollution, new energy technology has gradually become the focus of the industry. As the core component of pure electric vehicles, there are still many technical problems that need to be solved urgently. For example, there are still many technical problems to be solved in the accurate estimation of battery state of health (SOH). [0003] At present, there are several methods for calculating the SOH of the state of health of lithium batteries: it is calculated by using the capacity decay, which is calculated by the ratio of the current available capacity to the nominal capacity; when it is calculated by increasing the internal resistance, the relatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/392G01R31/388G01R31/367
CPCG01R31/392G01R31/367G01R31/388
Inventor 尚梦瑶
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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