Packaged thin film batteries and methods of packaging thin film batteries

• US 20070099078A1
• Filed: 11/09/2006
• Published: 05/03/2007
• Est. Priority Date: 01/10/2002
• Status: Active Grant

• Current Assignee: Johnson Ip Holding Llc
• Original Assignee: Johnson Ip Holding Llc
• Inventors: Zhang, Ji-Guang, Maxie, Eleston
• Granted Patent: US 7,960,054 B2
• Time in Patent Office: Days
• US Class Current: 429/185
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/126 comprising three or more layers
• CPC Class Codes: H01M 50/15 for prismatic or rectangular cells H01M50/153 takes precedence
• CPC Class Codes: H01M 6/185 with oxides, hydroxides or oxysalts as solid electrolytes
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A packaged battery (60) is provided having a thin film lithium battery cell (62) sealed with a packaging foil or layer (67). The battery cell (60) includes a substrate (61) and an active cell (62) with an anode current collector (65) and a cathode current collector (64). The packaged battery is produced by heat sealing a packaging foil (67) to the exterior surfaces of the active cell (62).

Claims

1. A thin film battery comprising:

a battery cell having a cathode, an anode and an electrolyte;

a packaging foil encapsulating said battery cell, said packaging foil being heat sealed to the majority of the exterior surface of said battery cell.

2. The thin film battery of claim 1 wherein said packaging foil is comprised of multi-layered laminates which includes at least one metallic layer and at least one polymer layer.

3. A thin film battery comprising:

a battery cell having a top surface, a bottom surface and peripheral side edges extending between said top surface and said bottom surface;

a packaging foil heat sealed to said battery cell top surface and to said battery cell bottom surface.

4. The thin film battery of claim 3 wherein said packaging foil is also heat sealed to said battery cell side edges.

5. The thin film battery of claim 3 wherein said packaging foil is comprised of multi-layered laminates which includes at least one metallic layer and at least one polymer layer.

6. A thin film battery comprising:

a battery cell having an active portion including a cathode, an anode and an electrolyte;

a packaging foil overlaying said active portion, said packaging foil being heat sealed to the majority of the exterior surface of said battery cell active portion.

7. The thin film battery of claim 6 wherein said packaging foil is comprised of multi-layered laminates which includes at least one metallic layer and at least one polymer layer.

9. The thin film battery of claim 6 wherein said packaging foil is comprised of multi-layered laminates which includes at least one metallic layer and at least one polymer layer.

8. A thin film battery comprising:

a mounting substrate;

a battery cell-mounted to said mounting substrate, said battery cell having an active portion including a cathode, an anode and an electrolyte, said active portion having a top surface opposite said substrate;

a packaging foil heat sealed to the majority of said top surface of said battery cell active portion.