Title:
PREDICTION METHOD AND APPARATUS FOR LITHIUM DEPOSITION OF THREE-ELECTRODE LITHIUM ION BATTERY, AND DEVICE AND MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/262566
Kind Code:
A1
Abstract:
Disclosed in the embodiments of the present application are a prediction method and apparatus for the lithium deposition of a three-electrode lithium ion battery, and a device and a medium, the prediction method comprising: establishing an electrochemical-thermal coupling model of a three-electrode lithium ion battery; on the basis of measured charging data of the three-electrode lithium ion battery at different rates, calibrating the electrochemical-thermal coupling model; on the basis of the electrochemical-thermal coupling model, acquiring a first charging current value satisfying a first boundary condition and a first value of a measured determining point, the measured determining point being the voltage of a negative electrode porous electrode and a reference electrode, the first boundary condition comprising the charging voltage being the upper limit cut-off voltage and the value of a simulation determining point being a first threshold, and the simulation determining point being the difference between the solid-phase potential and the liquid-phase potential at the interface between the negative electrode and a diaphragm; using the first value of the measured determining point as a new first threshold for re-performing simulation and, in response to a value of a measured pre-determining point of the electrochemical-thermal coupling model being less than the new first threshold, predicting the presence of a lithium deposition phenomenon.
Inventors:
CHEN SI (CN)
HE JIANCHAO (CN)
DU JIANPING (CN)
HE JIANCHAO (CN)
DU JIANPING (CN)
Application Number:
PCT/CN2022/096012
Publication Date:
December 22, 2022
Filing Date:
May 30, 2022
Export Citation:
Assignee:
SVOLT ENERGY TECH CO LTD (CN)
International Classes:
G06F30/23
Foreign References:
| CN113420475A | 2021-09-21 | |||
| CN109872002A | 2019-06-11 | |||
| CN107516750A | 2017-12-26 | |||
| CN110165314A | 2019-08-23 | |||
| CN108427077A | 2018-08-21 | |||
| JP2015228324A | 2015-12-17 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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