Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Lead-acid battery
US2016240857A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016240857-A1 |
| Application number | US-201615043374-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 12, 2016 |
| Priority date | Feb 18, 2015 |
| Publication date | Aug 18, 2016 |
| Grant date | — |
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- Title
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Abstract
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A lead-acid battery includes a negative electrode material containing graphite or carbon fiber. The ratio of the mass of the negative electrode material to the mass of a positive electrode material is 0.62 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; and an electrolyte solution, wherein the negative electrode plate includes a negative electrode material containing graphite or carbon fiber, and a ratio N/P of a mass N of the negative electrode material to a mass P of a positive electrode material per lead-acid battery is 0.62 or more. 2 . The lead-acid battery according to claim 1 , wherein the negative electrode material contains barium sulfate. 3 . The lead-acid battery according to claim 1 , wherein the negative electrode material contains elemental barium. 4 . The lead-acid battery according to claim 2 , wherein the negative electrode material contains 1.2 mass % or more of barium sulfate. 5 . The lead-acid battery according to claim 1 , wherein the negative electrode material contains 0.7 mass % or more of elemental barium. 6 . The lead-acid battery according to claim 2 , wherein the negative electrode material contains 3.0 mass % or less of barium sulfate. 7 . The lead-acid battery according to claim 1 , wherein the negative electrode material contains 1.75 mass % or less of elemental barium. 8 . The lead-acid battery according to claim 1 , wherein the negative electrode material contains carbon black. 9 . The lead-acid battery according to claim 1 , wherein the ratio N/P is 0.95 or less. 10 . The lead-acid battery according to claim 1 , wherein the negative electrode material contains 2.5 mass % or less of graphite or 2.5 mass % or less of carbon fiber. 11 . The lead-acid battery according to claim 1 , wherein the graphite or the carbon fiber is graphite having an average particle size of 300 μm or less. 12 . The lead-acid battery according to claim 1 , wherein the graphite or the carbon fiber is graphite having an average particle size of 10 μm or more. 13 . The lead-acid battery according to claim 1 , wherein the electrolyte solution contains aluminum ions. 14 . The lead-acid battery according to claim 1 , wherein the electrolyte solution contains lithium ions. 15 . The lead-acid battery according to claim 1 , wherein the ratio N/P is 0.78 or less.
Assignees
Inventors
Classifications
Negative electrodes · CPC title
Expanders for lead-acid accumulators · CPC title
- H01M4/625Primary
Carbon or graphite · CPC title
Lead-acid accumulators (semi-lead accumulators H01M10/20) · CPC title
Construction or manufacture · CPC title
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Frequently asked questions
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- What does patent US2016240857A1 cover?
- A lead-acid battery includes a negative electrode material containing graphite or carbon fiber. The ratio of the mass of the negative electrode material to the mass of a positive electrode material is 0.62 or more.
- Who is the assignee on this patent?
- Gs Yuasa Int Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/625. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Aug 18 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).