Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR DETERMINING DEGREE OF LITHIUM PLATING OF BATTERY, APPARATUS, DEVICE, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/103204
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are a method for determining the degree of lithium plating of a battery, an apparatus, a device, and a storage medium. The method comprises: acquiring an internal resistance distribution curve of a battery, and, according to the internal resistance distribution curve of the battery, determining the degree of lithium plating of the battery. On the basis of the pattern of the internal resistance distribution curve of a battery during an intermittent charging process, the present application accurately determines whether lithium plating occurs in the battery and the accurate timing of lithium plating, so as to represent the degree of lithium plating of the battery on the basis of the length of a curve segment indicating lithium plating or the area of a graph area corresponding to the curve segment in the internal resistance distribution curve. The present application constructs a data relationship model between the degree of lithium plating and an internal resistance value on the basis that impacts of different degrees of lithium plating on the internal resistance values of batteries are different, thereby effectively quantifying the degree of lithium plating of batteries during a single charging period, and quantifying the total degree of lithium plating of batteries during the whole charging process. Effective quantification of degrees of lithium plating of batteries has important significance in the aspects of safe battery use, safe battery charging, battery maintenance, etc.

More Like This:
WO/2023/127396ELECTRICITY STORAGE DEVICE CAPACITY ESTIMATING APPARATUS, AND ELECTRICITY STORAGE DEVICE DETERIORATION DEGREE ESTIMATING APPARATUS AND SYSTEM
WO/2023/044875METHOD AND DEVICE FOR DETERMINING DISPLAY STATE OF CHARGE AND BATTERY MANAGEMENT CHIP
WO/2020/189998BATTERY BANK CONTROL DEVICE AND METHOD
Inventors:
HUANG SHAN (CN)
LI HAILI (CN)
LIU ZHI (CN)
ZHANG SHICHANG (CN)
SHI DONGYANG (CN)
Application Number:
PCT/CN2022/131641
Publication Date:
May 23, 2024
Filing Date:
November 14, 2022
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
G01R31/388; G01R31/3842; G01R31/389
Foreign References:
CN111638461A2020-09-08
CN115298561A2022-11-04
CN114397582A2022-04-26
CN112710957A2021-04-27
Other References:
UPENDER RAO KOLETI ET AL.: "A new on-line method for lithium plating detection in lithium-ion batteries", JOURNAL OF POWER SOURCES, vol. 451, 30 January 2020 (2020-01-30), XP086055283, ISSN: 0378-7753, DOI: 10.1016/j.jpowsour.2020.227798
Attorney, Agent or Firm:
BEIJING CHEN QUAN INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: COMBINING LOW POWER WAKEUP SIGNAL AND EXTENDED DISCONTINUOUS RECEPTION CONFIGURATIONS

Next Patent: FREQUENCY HOPPING CONSIDERATIONS WITH MULTIPLE PHYSICAL RANDOM ACCESS CHANNEL TRANSMISSIONS