Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
US-2021013496-A1 · Jan 14, 2021 · US
Nonaqueous electrolyte secondary battery and secondary battery module
US11817577B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11817577-B2 |
| Application number | US-202117200058-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2021 |
| Priority date | Mar 17, 2020 |
| Publication date | Nov 14, 2023 |
| Grant date | Nov 14, 2023 |
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.
The present disclosure relates to a secondary battery module including a nonaqueous electrolyte secondary battery and an elastic body. The elastic body has a compressive elastic modulus of 5 MPa to 120 MPa. The nonaqueous electrolyte secondary battery includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector containing Ti as a main component and having a thickness of 1 μm to 8 μm. The negative electrode includes a first layer and a second layer sequentially formed from a side with the negative electrode collector. The first layer contains negative electrode active material particles containing first carbon-based active material particles with a 10% proof stress of 3 MPa or less. The second layer contains negative electrode active material particles containing second carbon-based active material particles with a 10% proof stress of 5 MPa or greater.
First claim
Opening claim text (preview).
The invention claimed is: 1. A secondary battery module, comprising: at least one nonaqueous electrolyte secondary battery, and an elastic body disposed together with the nonaqueous electrolyte secondary battery, for receiving a load from the nonaqueous electrolyte secondary battery in a direction in which the nonaqueous electrolyte secondary battery and the elastic body are disposed, wherein the nonaqueous electrolyte secondary battery includes an electrode body including a laminate of a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, and an enclosure for storing the electrode body therein, the elastic body has a compressive elastic modulus of 5 MPa to 120 MPa, the positive electrode includes a positive electrode collector containing Ti as a main component and having a thickness of 1 μm to 8 μm, the negative electrode includes a negative electrode collector and a negative electrode active material layer including a first layer and a second layer sequentially formed from a side with the negative electrode collector, and the first layer contains negative electrode active material particles containing first carbon-based active material particles with a 10% proof stress of 3 MPa or less, and the second layer contains negative electrode active material particles containing second carbon-based active material particles with a 10% proof stress of 5 MPa or greater. 2. The secondary battery module according to claim 1 , wherein the negative electrode active material particles contained in the second layer each have a BET specific surface area that is smaller than a BET specific surface area of the negative electrode active material particles contained in the first layer. 3. A nonaqueous electrolyte secondary battery, comprising: an electrode body including a laminate of a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, an elastic body for receiving a load from the electrode body in a lamination direction of the electrode body, and an enclosure for storing the electrode body and the elastic body therein, wherein the elastic body has a compressive elastic modulus of 5 MPa to 120 MPa, the positive electrode includes a positive electrode collector containing Ti as a main component and having a thickness of 1 μm to 8 μm, the negative electrode includes a negative electrode collector and a negative electrode active material layer including a first layer and a second layer sequentially formed from a side with the negative electrode collector, the first layer contains negative electrode active material particles containing first carbon-based active material particles with a 10% proof stress of 3 MPa or less, and the second layer contains negative electrode active material particles containing second carbon-based active material particles with a 10% proof stress of 5 MPa or greater.
Assignees
Inventors
Classifications
- H01M4/366Primary
as layered products · CPC title
Carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
Separators, membranes or diaphragms characterised by their combination with electrodes · CPC title
Spacing elements inside cells other than separators, membranes or diaphragms (for preventing incorrect contact inside or outside batteries H01M50/584); Manufacturing processes thereof · CPC title
Negative electrodes · 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 US11817577B2 cover?
- The present disclosure relates to a secondary battery module including a nonaqueous electrolyte secondary battery and an elastic body. The elastic body has a compressive elastic modulus of 5 MPa to 120 MPa. The nonaqueous electrolyte secondary battery includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector containing Ti as a main co…
- Who is the assignee on this patent?
- Panasonic Corp, Toyota Motor Co Ltd, Panasonic Holdings Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 14 2023 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).