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Battery capacity fading calculation method and device, computer equipment and storage medium

A calculation method and battery capacity technology, applied in the direction of measuring devices, measuring electrical variables, measuring electricity, etc., can solve problems such as poor simulation effect, equipment performance degradation, and potential safety hazards

Active Publication Date: 2021-12-17
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the simulation effect of the above-mentioned technical solutions is poor, resulting in a large deviation between the prediction of battery capacity attenuation and the actual situation, so that the use of batteries under unreasonable expectations in actual scenarios such as electric vehicles and functional system applications is likely to cause equipment failure. Performance decline, even accidents, there are potential safety hazards

Method used

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  • Battery capacity fading calculation method and device, computer equipment and storage medium
  • Battery capacity fading calculation method and device, computer equipment and storage medium
  • Battery capacity fading calculation method and device, computer equipment and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0031] figure 1 It is a flow chart of a calculation method for battery capacity attenuation provided by Embodiment 1 of the present invention. This embodiment is applicable to calculating the capacity attenuation of the next cycle of the battery by using the overall internal resistance of the battery corrected by the internal resistance growth rate In the case of the relationship, the method can be executed by a computing device for battery capacity decay, which can be implemented by software and / or hardware, and can be configured in a computer device, such as a server, a personal computer, etc. , including the following steps:

[0032] Step 101 : Calculate the growth rate of the internal resistance of the battery at the end of the current cycle according to the operating data of the battery in the current cycle.

[0033] A battery refers to a device that contains an electrolytic solution and a metal electrode-a tank or other container or a part of a composite container that ...

Embodiment 2

[0103] figure 2 It is a flow chart of a calculation method for battery capacity decay provided by Embodiment 2 of the present invention. This embodiment is based on the foregoing embodiments, and further increases the operation of calculating battery capacity decay after multiple cycles by adding conditions and cycles. , the method specifically includes the following steps:

[0104] Step 201 , calculating the growth rate of the internal resistance of the battery at the end of the current cycle according to the operating data of the battery in the current cycle.

[0105] Step 202, correcting the overall internal resistance of the battery in the next cycle according to the growth rate of the internal resistance.

[0106] Step 203, simulating the operation of the battery for one cycle according to the overall internal resistance of the next cycle, and obtaining the operation data of the battery in the next cycle.

[0107] Step 204 : Calculate the capacity decay relationship of...

Embodiment 3

[0135] image 3 The structural block diagram of a calculation device for battery capacity attenuation provided by Embodiment 3 of the present invention may specifically include the following modules:

[0136] The growth rate calculation module 301 is used to calculate the growth rate of the internal resistance of the battery at the end of the current cycle according to the operating data of the battery in this cycle;

[0137] An internal resistance correction module 302, configured to correct the overall internal resistance of the battery in the next cycle according to the growth rate of the internal resistance;

[0138] The simulation module 303 is configured to simulate the operation of the battery for one cycle according to the overall internal resistance of the next cycle, and obtain the operation data of the battery in the next cycle;

[0139] The capacity decay curve generation module 304 is configured to calculate the capacity decay relationship of the battery in the n...

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Abstract

The embodiment of the invention provides a battery capacity attenuation calculation method and device, computer equipment and a storage medium. The method comprises the following steps: calculating the growth rate of internal resistance of a battery at the end of operation in the current period according to operation data of the battery in the current period; correcting the overall internal resistance of the battery in the next period according to the internal resistance growth rate; simulating operation of the battery for one cycle according to the overall internal resistance of the next cycle to obtain operation data of the battery in the next cycle; and according to the operation data of the battery in the next period, calculating a relationship that the capacity of the battery is attenuated along with the period in the next period as a capacity attenuation curve. According to the invention, by adding the parameter of the internal resistance growth rate, the simulation process data of the operation data of each period considers the change of the operation data caused by the overall internal resistance change condition in the conventional use scene of the battery, so that the prediction accuracy of the battery capacity attenuation calculation in the actual application scene is improved, and the self-adaptability of the system driven by the battery is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of batteries, and in particular to a calculation method, device, computer equipment and storage medium for battery capacity decay. Background technique [0002] At present, battery systems are widely used in all levels of society and play an important role, including in electric vehicles and energy storage systems. The service life of electric vehicles and energy storage systems is closely related to the service life of the battery system used. Therefore, improving the accuracy of battery capacity decay prediction is a key issue. So far, the life prediction of the battery system is triggered from the life decay of the battery cell at the highest temperature of the system. The battery capacity decay is predicted by the life decay of the battery cell at the highest temperature, and the internal resistance value at the initial state of the service life is predicted. However, the simul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/388G01R31/389G01R31/396G01R31/374
CPCG01R31/388G01R31/389G01R31/396G01R31/374Y02E60/10
Inventor 匡海鹏刘华俊
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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