US 2021/0280914 A1Published application

Hot Melt Extruded Solid State Battery Components

AssigneeRobert Bosch GmbH

InventorsRam Subbaraman, Saravanan Kuppan

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Abstract

A method of co-extruding battery components includes forming a first thin film battery component via hot melt extrusion, and forming a second thin film battery component via hot melt extrusion. A surface treatment is applied to a surface region of at least one of the first and second components so that, relative to a remainder of the at least one component, the surface region has at least one of a decreased inter-particle distance, a decreased amount of polymer binder material, and an increased amount of exposed ionically conductive material. The first and second components are fed through a co-extrusion die to form a co-extruded multilayer thin film.

Claims15

Dependent claims

A method of co-extruding battery components, comprising:

forming a first thin film battery component via hot melt extrusion;
forming a second thin film battery component via hot melt extrusion;
applying a surface treatment to a surface region of at least one of the first thin film battery component and the second thin film battery component so that, relative to a remainder of the at least one of the first and second thin film component, the surface region has at least one of:
a decreased inter-particle distance;
a decreased amount of polymer binder material;
and
an increased amount of exposed ionically conductive material;
and
feeding the first thin film battery component and the second thin film battery component through a co-extrusion die to form a co-extruded multilayer thin film.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/976,977Filed 26 Feb 2019
Priority: 5 Mar 2018
Published: 9 Sep 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

H01M 10/0585
Construction or manufacture: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and…
H01M 4/0411
Methods of deposition of the material: by extrusion
H01M 4/0435
Involving compressing or compaction: rolling or calendering
H01M 4/0483
Processes of manufacture in general: by methods including the handling of a melt

Family

Application62/638,657Us provisional application · filed 5 Mar 2018
US 11,515,571 B2Related patent
US 2021/0280914 A1This patent

From the US filing history. Foreign family members aren’t listed.

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