US 12,525,690 B2Granted

Multi-layer ceramic battery and method for manufacturing the same

AssigneeSamhwa Capacitor Co., Ltd.

InventorsYoung Joo Oh, Jung Rag Yoon, Jong Kyu Lee

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Abstract

Provided are a multi-layer ceramic battery and a method thereof. The method includes: forming a pair of conductive terminal layers to partly cover one side and the other side of a battery body; forming an outer insulating coating layer to cover the surface of the battery body and each surface of the pair of conductive terminal layers; forming a pair of insulating coating windows by polishing the outer insulating coating layer to expose the surfaces of the conductive terminal layers formed at the ends of the one side and the other side of the battery body; forming a pair of inner plating layers to connect to the surfaces of the conductive terminal layers exposed through the insulating coating windows and partly cover one side and the other side of the outer insulating coating layer; and forming a pair of outer plating layers to cover the inner plating layers.

A method for manufacturing a multi-layer ceramic battery (MLCB), comprising:

forming a pair of conductive terminal layers to partly cover one side and the other side of a battery body, respectively;
forming an outer insulating coating layer to cover the surface of the battery body and each surface of the pair of conductive terminal layers;
forming a pair of insulating coating windows by polishing the outer insulating coating layer to expose the surfaces of the conductive terminal layers formed at the ends of the one side and the other side of the battery body;
forming a pair of inner plating layers to connect to the surfaces of the conductive terminal layers exposed through the insulating coating windows and partly cover one side and the other side of the outer insulating coating layer, respectively;
and
forming a pair of outer plating layers to cover the inner plating layers, respectively,
wherein in the step of forming an outer insulating coating layer to cover the surface of the battery body and each surface of the pair of conductive terminal layers, the outer insulating coating layer is formed by any one method selected from dipping, spraying and vacuum impregnation using any one layer selected from a silane-based insulating coating layer, an oxide-based insulating coating layer and a glass insulating coating layer to a thickness of 6 to 30 μm,
wherein the silane-based insulating coating layer is formed of a silane-based coating agent, the silane-based coating agent comprising 40 to 70 wt. % of a silane composite, 20 to 40 wt. % of isopropanol group, and 10 to 20 wt. % of acetyl alcohol, the silane composite comprising 30 to 60 wt. % of aminopropyltriethoxysilane and 40 to 70 wt. % of glycidoxypropyltriepoxysilane,
wherein the oxide-based insulating coating layer is formed of a mixture comprising 49 to 89.9 wt. % of an oxide-based ceramic, 10 to 50 wt. % of a silane-based coating agent and 0.1 to 1 wt. % of a metal salt, the oxide-based ceramic being any one of SiO2, Al2O3 and ZrO2, the silane-based coating agent being the same as the silane-based coating agent used for the material of the silane-based insulating coating layer, the metal salt being an inorganic salt or an organic salt, the inorganic salt being at least one of Cl−, Br−, AlCl4− and BF4−, the organic salt being sodium acetate or sodium alginate, and
wherein the glass insulating coating layer is formed of a low temperature liquid glass, the low temperature liquid glass comprising 55 to 59 wt. % of SiO2, 23 to 25 wt. % of CaO, 12 to 13 wt. % of Al2O3, and 4 to 7 wt. % of MgQ.

7 more elements

Facts

Application

17/972,758Filed 25 Oct 2022

Priority

KR 10-2022-005968316 May 2022

Published

US 2023/0369730 A116 Nov 2023

Granted

13 Jan 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

H01M 50/562
Terminals: characterised by the material
H01M 4/505
Of manganese: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525
Of nickel, cobalt or iron: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g.…
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

Abstract

Claims11