Battery-packaging material
US-2016301040-A1 · Oct 13, 2016 · US
Power storage device packaging material, method for producing same, and power storage device
US2023361393A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023361393-A1 |
| Application number | US-202118027262-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 30, 2021 |
| Priority date | Sep 30, 2020 |
| Publication date | Nov 9, 2023 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A power storage device packaging material includes a laminate including at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein the base material layer contains a polyester film, and the polyester film has a work hardening exponent of 1.6 or more and 3.0 or less in both longitudinal and width directions, with a difference of 0.5 or less between the work hardening exponents in the longitudinal and width directions, an intrinsic viscosity of 0.66 or more and 0.95 or less, and a rigid amorphous fraction of 28% or more and 60% or less.
First claim
Opening claim text (preview).
1 . A power storage device packaging material comprising a laminate comprising at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein the base material layer contains a polyester film, and the polyester film has a work hardening exponent of 1.6 or more and 3.0 or less in both longitudinal and width directions, with a difference of 0.5 or less between the work hardening exponents in the longitudinal and width directions, an intrinsic viscosity of 0.66 or more and 0.95 or less, and a rigid amorphous fraction of 28% or more and 60% or less. 2 . The power storage device packaging material according to claim 1 , wherein the polyester film has a thickness of 5 μm or more and 40 μm or less. 3 . The power storage device packaging material according to claim 1 , wherein the polyester film has a melting point of 235° C. or more. 4 . The power storage device packaging material according to claim 1 , wherein the polyester film has a degree of crystallinity of 15% or more and 40% or less. 5 . The power storage device packaging material according to claim 1 , wherein the polyester film has a rupture elongation of 100% or more in at least one of the longitudinal and width directions. 6 . A power storage device comprising a power storage device element comprising at least a positive electrode, a negative electrode, and an electrolyte, the power storage device element being housed in a package formed of the power storage device packaging material according to claim 1 . 7 . A method for producing a power storage device packaging material, comprising the step of: laminating at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order to provide a laminate, wherein the base material layer contains a polyester film, and the polyester film has a work hardening exponent of 1.6 or more and 3.0 or less in both longitudinal and width directions, with a difference of 0.5 or less between the work hardening exponents in the longitudinal and width directions, an intrinsic viscosity of 0.66 or more and 0.95 or less, and a rigid amorphous fraction of 28% or more and 60% or less.
Assignees
Inventors
Classifications
- H01M50/121Primary
Organic material · CPC title
characterised by physical properties, e.g. gas permeability, size or heat resistance · CPC title
comprising three or more layers · CPC title
- H01M50/141Primary
for protecting against humidity · CPC title
Cases; Housings; Encapsulations; Mountings · CPC title
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Frequently asked questions
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- What does patent US2023361393A1 cover?
- A power storage device packaging material includes a laminate including at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein the base material layer contains a polyester film, and the polyester film has a work hardening exponent of 1.6 or more and 3.0 or less in both longitudinal and width directions, with a difference of 0.5 or less between th…
- Who is the assignee on this patent?
- Dainippon Printing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M50/121. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 09 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).