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Battery pack life prediction method, storage medium and electronic equipment

A technology for life prediction, battery pack

Pending Publication Date: 2022-07-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present disclosure is to provide a battery pack life prediction method, storage medium and electronic equipment, which are used to solve the problem that the existing battery pack life prediction method cannot consider the influence of the inconsistent parameters of the single cells in the battery pack on the battery pack life

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  • Battery pack life prediction method, storage medium and electronic equipment
  • Battery pack life prediction method, storage medium and electronic equipment
  • Battery pack life prediction method, storage medium and electronic equipment

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Embodiment Construction

[0051] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

[0052] figure 1 is a schematic flowchart of a battery pack life prediction method according to an exemplary embodiment, such as figure 1 As shown, the embodiment of the present disclosure provides a battery pack life prediction method, and the method may include:

[0053] Step 110: Determine initial battery characteristic parameters of each single cell in the battery pack to be tested;

[0054] Step 120, for each single cell, perform cyclic charge-discharge simulation on the single cell according to the pre-built capacity decay model and the pre-built electrochemical-thermal coupled model, so as to obtain each charge-discharge simulation process the terminal voltag...

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Abstract

The invention relates to a battery pack life prediction method, a storage medium and electronic equipment, and relates to the technical field of batteries, the method comprises the following steps: determining an initial battery characteristic parameter of each single battery in a to-be-tested battery pack; and according to a pre-constructed capacity recession model and a pre-constructed electrochemical-thermal coupling model, performing cyclic charging and discharging simulation on the single battery to obtain the terminal voltage of the single battery in each charging and discharging simulation process, thereby determining the service life of the to-be-tested battery pack according to the terminal voltage. The method has the advantages that the service life of the battery pack can be accurately predicted, and compared with the prior art, the test period can be greatly shortened, and test resources can be saved.

Description

technical field [0001] The present disclosure relates to the field of battery technology, and in particular, to a battery pack life prediction method, a storage medium, and an electronic device. Background technique [0002] Existing battery pack life prediction methods generally evaluate the battery pack life based on experimental data or real vehicle data. This method takes a lot of time to obtain experimental data or real vehicle data, resulting in a battery pack test cycle that takes at least a few days. months, and requires a lot of testing resources. At the same time, due to the inconsistent parameters of the single cells in the battery pack and different operating conditions, the life of the battery pack cannot be simply equivalent to the life of the worst single cell, and the existing battery pack life prediction methods do not take into account The parameter inconsistency of the single battery affects the overall battery pack, resulting in inaccurate battery pack l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/25G06F30/27G01R31/367G01R31/385G06F17/12G06F17/13G06N3/12G06F111/04G06F119/02G06F119/04G06F119/08
CPCG06F30/25G06F30/27G01R31/367G01R31/385G01R31/3648G06F17/12G06F17/13G06N3/126G06F2111/04G06F2119/02G06F2119/04G06F2119/08
Inventor 郭启涛蔡伟华郭磊周兴锋李琦
Owner BYD CO LTD