Storage amount estimation device, energy storage module, storage amount estimation method, and computer program
US-2020166581-A1 · May 28, 2020 · US
Method for charging nonaqueous electrolyte secondary cell having lithium-transition metal positive electrode active material
US12489153B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12489153-B2 |
| Application number | US-202117801190-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2021 |
| Priority date | Feb 27, 2020 |
| Publication date | Dec 2, 2025 |
| Grant date | Dec 2, 2025 |
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- Title
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Abstract
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This charging method is A method for charging a nonaqueous electrolyte secondary cell containing a lithium-rich positive-electrode active material. When constant-current charging is performed to a predetermined voltage V 2 which is equal to or higher than a setting voltage V 1, and then constant-current discharging is performed to a predetermined voltage V 3, V 3 <V 1 ≤V 2 is satisfied. Cell capacity C 1 at V 1, cell capacity C 2 at V 2, and cell capacity C 3 at V 3 satisfy 0.99C 1 ≤C 3 <C 2.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A method of charging a non-aqueous electrolyte secondary battery including a positive electrode active material, the method including: charging a battery at a constant current until a predetermined voltage V2 that is equal to or higher than a set voltage V1, and then discharging the battery at a constant current until a predetermined voltage V3, wherein V3<V1≤V2, a battery capacity C1 at V1, a battery capacity C2 at V2, and a battery capacity C3 at V3 satisfy 0.99C1≤C3<C2, and the positive electrode active material includes a lithium-transition metal composite oxide represented by the general formula Li x Mn y Ni z Me 2-x-y-z O a F b , wherein 1≤x≤1.2, 0.4≤y≤0.8, 0≤z≤0.4, 0<b≤0.2, 1.9≤a+b≤2.1, and Me is at least one element selected from the group consisting of Co, Ti, Al, Si, Sr, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K, and Bi. 2 . The charging method according to claim 1 , wherein V1 is not less than 4.4 V relative to a lithium electrode. 3 . The charging method according to claim 1 , wherein V2 is not more than 4.9 V relative to a lithium electrode. 4 . The charging method according to claim 1 , wherein C3 is SOC 90% or more.
Assignees
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Classifications
in response to battery voltage · CPC title
Aspects relating to capacity ratio of electrodes/electrolyte or anode/cathode · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
- H01M4/505Primary
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
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- What does patent US12489153B2 cover?
- This charging method is A method for charging a nonaqueous electrolyte secondary cell containing a lithium-rich positive-electrode active material. When constant-current charging is performed to a predetermined voltage V 2 which is equal to or higher than a setting voltage V 1, and then constant-current discharging is performed to a predetermined voltage V 3, V 3 <V 1 ≤V 2 is satisfied. Cel…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/505. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 02 2025 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).