Non-aqueous electrolyte secondary battery
US-2016056470-A1 · Feb 25, 2016 · US
Non-aqueous electrolyte secondary battery
US10468651B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10468651-B2 |
| Application number | US-201616324049-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 10, 2016 |
| Priority date | Aug 10, 2016 |
| Publication date | Nov 5, 2019 |
| Grant date | Nov 5, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A non-aqueous electrolyte secondary battery has improved battery cycle durability and suppresses internal short-circuits. The non-aqueous electrolyte secondary battery includes a power generating element having a positive electrode, a negative electrode, and a separator including a resin film having a three-layer structure, a ratio of a rated capacity to a pore volume of a positive electrode active material layer being 2.08 Ah/cc or more, a ratio of a battery area to a rated capacity being 7 cm 2 /Ah or more, and a rated capacity being 50 Ah or more, in which a value R represented by Formula 1 is 62 to 110: R = Tortuosity factor × Thickness [ µm ] Porosity ( Formula 1 ) provided that, the average pore diameter is 0.10 to 0.18 μm, the porosity is 0.43 to 0.65, the air permeability is 140 to 305 sec/100 ml, and the thickness is 11 to 25 μm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-aqueous electrolyte secondary battery comprising a power generating element including a positive electrode obtained by forming a positive electrode active material layer containing a positive electrode active material on a surface of a positive electrode current collector, a negative electrode obtained by forming a negative electrode active material layer containing a negative electrode active material on a surface of a negative electrode current collector, and a separator including a resin film having a three-layer structure, a ratio of a rated capacity to a pore volume of the positive electrode active material layer being 2.08 Ah/cc or more, a ratio of a battery area to a rated capacity being 7 cm 2 /Ah or more, and a rated capacity being 50 Ah or more, wherein a value R of the separator represented by the following Formula 1 is 62 to 110: R = Tortuosity factor × Thickness [ µm ] Porosity ( Formula 1 ) provided that, in Formula 1, a tortuosity factor is a value represented by the following Formula 2: Tortuosity factor = Air permeability [ sec / 100 ml ] × Average pore diameter [ µm ] × Porosity Thickness [ µm ] × 25 × 5.18 × 10 - 3 ( Formula 2 ) the average pore diameter is 0.10 to 0.18 μm, the porosity is 0.43 to 0.65, the air permeability is 140 to 305 sec/100 ml, and the thickness is 11 to 25 μm. 2. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the R is 91 to 110. 3. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the R is 81 to 90. 4. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the R is 62 to 80. 5. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the separator has a laminate structure of the resin film and a heat resistant insulating layer. 6. The non-aqueous electrolyte secondary battery according to claim 1 , wherein a constituent of the resin film is at least one of polypropylene and polyethylene. 7. The non-aqueous electrolyte secondary battery according to claim 1 , wherein the non-aqueous electrolyte secondary battery is a flat stack type laminate battery obtained by sealing the power generating element in a battery outer casing body formed of a laminate film containing aluminum.
Assignees
Inventors
Classifications
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title
Li-accumulators · CPC title
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
Batteries in motive systems, e.g. vehicle, ship, plane · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10468651B2 cover?
- A non-aqueous electrolyte secondary battery has improved battery cycle durability and suppresses internal short-circuits. The non-aqueous electrolyte secondary battery includes a power generating element having a positive electrode, a negative electrode, and a separator including a resin film having a three-layer structure, a ratio of a rated capacity to a pore volume of a positive electr…
- Who is the assignee on this patent?
- Envision Aesc Japan Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 05 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).