Lead-acid battery
US-2016240857-A1 · Aug 18, 2016 · US
Lead-acid battery
US10003069B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10003069-B2 |
| Application number | US-201615044286-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 16, 2016 |
| Priority date | Feb 18, 2015 |
| Publication date | Jun 19, 2018 |
| Grant date | Jun 19, 2018 |
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 lead-acid battery includes a negative electrode material containing graphite and barium sulfate. A ratio S/W of an average plate interval S between a negative electrode plate and a positive electrode plate, to a mass W of the negative electrode material per one negative electrode plate is 0.01 mm/g or more.
First claim
Opening claim text (preview).
What is claimed is: 1. A lead-acid battery comprising a negative electrode plate, a positive electrode plate, an electrolyte solution, and a separator, wherein the negative electrode plate includes a negative electrode material containing either graphite or carbon fiber, and barium sulfate, and an average plate interval S between the negative electrode plate and the positive electrode plate, and a mass W of the negative electrode material per one negative electrode plate are in a ratio S/W of 0.01 mm/g or more. 2. The lead-acid battery according to claim 1 , wherein the negative electrode material contains 0.6 mass % or more of barium sulfate. 3. The lead-acid battery according to claim 1 , wherein the negative electrode material contains 1.2 mass % or more of barium sulfate. 4. The lead-acid battery according to claim 1 , wherein the negative electrode material contains carbon black. 5. The lead-acid battery according to claim 1 , wherein the negative electrode material contains less than 2.5 mass % of graphite or less than 2.5 mass % of carbon fiber. 6. The lead-acid battery according to claim 1 , wherein the ratio S/W is 0.02 mm/g or less. 7. The lead-acid battery according to claim 1 , wherein the negative electrode material contains 3.5 mass % or less of barium sulfate. 8. The lead-acid battery according to claim 1 , wherein the graphite or carbon fiber has an electric resistivity of 0.01 Ω·cm or less in powder form as measured by a four-terminal method. 9. The lead-acid battery according to claim 1 , wherein the barium sulfate has an oil absorption capacity of 12 mL/100 g or more. 10. The lead-acid battery according to claim 1 , wherein the separator has a content of silica (SiO 2 ) of 60 mass % or more. 11. The lead-acid battery according to claim 1 , wherein the electrolyte solution contains aluminum ions. 12. The lead-acid battery according to claim 1 , wherein the electrolyte solution contains aluminum ions of 0.02 mol/L or more. 13. The lead-acid battery according to claim 1 , wherein the electrolyte solution contains lithium ions. 14. The lead-acid battery according to claim 1 , wherein the electrolyte solution contains lithium ions of 0.01 mol/L or more. 15. The lead-acid battery according to claim 1 , wherein the graphite or carbon fiber is scalelike graphite or expanded graphite. 16. A lead-acid battery comprising a negative electrode plate, a positive electrode plate, an electrolyte solution, and a separator, wherein the negative electrode plate includes a negative electrode material containing either graphite or carbon fiber, and elemental barium, and an average plate interval S between the negative electrode plate and the positive electrode plate, and a mass W of the negative electrode material per one negative electrode plate are in a ratio S/W of 0.01 mm/g or more.
Assignees
Inventors
Classifications
Glass · CPC title
Lead-acid accumulators (semi-lead accumulators H01M10/20) · CPC title
Electricity · mapped topic
Selection of materials as electrolytes · CPC title
- H01M4/14Primary
Electrodes for lead-acid accumulators · 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 US10003069B2 cover?
- A lead-acid battery includes a negative electrode material containing graphite and barium sulfate. A ratio S/W of an average plate interval S between a negative electrode plate and a positive electrode plate, to a mass W of the negative electrode material per one negative electrode plate is 0.01 mm/g or more.
- Who is the assignee on this patent?
- Gs Yuasa Int Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/14. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 19 2018 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).