US 11,539,088 B2Granted

Ultra-thin microbattery packaging and handling

AssigneeInternational Business Machines Corporation

InventorsBing Dang, Leanna Pancoast, Jae-Woong Nah, John Knickerbocker

Life of this patent

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Abstract

Microbatteries and methods for forming microbatteries are provided. The microbatteries and methods address at least one or both of edge sealing issues for edges of a stack forming part of a microbatteries and overall sealing for individual cells for microbatteries in a batch process. A transferable solder molding apparatus and sealing structure are proposed in an example to provide a metal casing for a solid-state thin-film microbattery. An exemplary proposed process involves deposition or pre-forming low-temperature solder casing separately from the microbatteries. Then a thermal compression may be used to transfer the solder casing to each battery cell, with a handler apparatus in a batch process in an example. These exemplary embodiments can address the temperature tolerance constrain for solid state thin film battery during handling, metal sealing, and packaging.

Claims12

Dependent claims

A microbattery, comprising:

a microbattery structure formed in a stack, the stack comprising multiple surfaces fashioned using multiple layers, the multiple layers including a substrate layer and a cover plate layer, a face side of the multiple surfaces being a surface of the substrate layer, a second side of the multiple surfaces being a surface of the cover plate layer, the face and second sides on opposite sides of the stack, and side surfaces of the multiple surfaces being opposite edges of the stack spanning between the surfaces of the first and second layers;
a first terminal on the face side and coupled to an anode of a battery in the microbattery structure;
a second terminal on the face side and coupled to a cathode of the battery in the microbattery structure;
and
a metal-containing film covering the side surfaces, at least a portion of the second surface adjacent the edges, and a portion of the face layer of the stack but not covering the first or second terminals.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/813,071Filed 9 Mar 2020
Published: US 2021/0280834 A19 Sep 2021
Granted: 27 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H01M 10/0562
The electrolyte being constituted of inorganic materials only: solid materials
H01M 50/10
Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells:…
H01M 10/0436
Construction or manufacture in general: small-sized flat cells or batteries for portable equipment
H01M 10/052
Accumulators with non-aqueous electrolyte: li-accumulators