US 2026/0290919 A1 · METHOD FOR DETECTING LITHIUM PLATING, AND METHOD AND DEVICE FOR MANAGING BATTERY BY USING SAME

Abstract

Provided are a lithium plating detection method, a battery management method and apparatus for safety diagnosis using the lithium plating detection method. The lithium plating detection method according to the present disclosure includes detecting, accumulating and tracking each of an open circuit voltage (OCV) after fully charging and an OCV after fully discharging of a battery every charge/discharge cycle of the battery, and determining if lithium plating took place in the battery using a result of tracking the OCV after fully charging and the OCV after fully discharging, wherein a range satisfying a condition of the reduced OCV after fully charging and the reduced OCV after fully discharging in the tracking result is determined as a range in which lithium plating starts to take place.

Claims11

Dependent claims

A lithium plating detection method comprising:

detecting each of an open circuit voltage (OCV) after fully charging and an OCV after fully discharging of a battery every charge/discharge cycle of the battery;
tracking the OCV after fully charging and the OCV after fully discharging;
and
determining if lithium plating took place in the battery using a result of tracking the OCV after fully charging and the OCV after fully discharging,
wherein a range satisfying a condition of the reduced OCV after fully charging and the reduced OCV after fully discharging in the tracking result is determined as a range in which lithium plating starts to take place.

2 more elements

A battery management method comprising:

(a) detecting and recording an open circuit voltage (OCV) after initial fully charging and an OCV after initial fully discharging of a battery;
(b) detecting and recording an OCV after next fully charging and an OCV after next fully discharging of the battery;
and
(c) determining whether each of the OCV after fully charging and the OCV after fully discharging increases, reduces and is maintained by comparing an immediately previous detected and recorded OCV after fully charging with a newly detected and recorded OCV after fully charging, and comparing an immediately previous detected and recorded OCV after fully discharging with a newly detected and recorded OCV after fully discharging,
wherein the steps (b) and (c) are repeatedly performed, and
in the step (c), when a condition of the reduced OCV after fully charging and the reduced OCV after fully discharging is satisfied, it is determined that lithium plating starts to take place.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

19/684,800Filed 21 May 2026

Priority

KR 10-2020-00138995 Feb 2020

Published

24 Sep 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

G01R 31/392
Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of…
H01M 10/48
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: accumulators combined with arrangements for…
G01R 31/382
Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of…
H01M 10/052
Accumulators with non-aqueous electrolyte: li-accumulators

Method for detecting lithium plating, and method and device for managing battery by using same

Life of this patent

Method for detecting lithium plating, and method and device for managing battery by using same

Life of this patent

Abstract

Claims11