Positive electrode for alkaline storage batteries and alkaline storage battery
US-2016254534-A1 · Sep 1, 2016 · US
Method for manufacturing nickel-metal hydride battery and nickel-metal hydride battery
US11139461B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11139461-B2 |
| Application number | US-201816229561-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 21, 2018 |
| Priority date | Dec 25, 2017 |
| Publication date | Oct 5, 2021 |
| Grant date | Oct 5, 2021 |
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- Title
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- Abstract
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Abstract
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A method for manufacturing a nickel-metal hydride battery includes: a first step of preparing a first nickel-metal hydride battery having a positive electrode including nickel hydroxide (Ni(OH)2); and a second step of manufacturing the second nickel-metal hydride battery by performing 600% overcharging to the prepared first nickel-metal hydride battery. The 600% overcharging is a process for supplying the first nickel-metal hydride battery with an amount of electric power of 600% of the rated capacity of the first nickel-metal hydride battery.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for manufacturing a nickel-metal hydride battery, the method comprising: preparing a first nickel-metal hydride battery having a positive electrode including nickel hydroxide; and manufacturing a second nickel-metal hydride battery by charging the first nickel-metal hydride battery to change, into nickel oxide, at least part of the nickel hydroxide in the positive electrode of the first nickel-metal hydride battery, wherein manufacturing the second nickel-metal hydride battery comprises: performing a first round of overcharging of the first nickel-metal hydride battery with an amount of electric power of more than or equal to 600% of a rated capacity of the first nickel-metal hydride battery; completely discharging the first nickel-metal hydride battery; and performing a second round of overcharging of the first nickel-metal hydride battery with an amount of electric power of more than or equal to 600% of a rated capacity of the first nickel-metal hydride battery; and wherein nickel in the nickel oxide has a valence of more than 3. 2. The method for manufacturing the nickel-metal hydride battery according to claim 1 , wherein the positive electrode of the first nickel-metal hydride battery further includes, in addition to the nickel hydroxide, nickel oxide deactivated due to deterioration. 3. The method for manufacturing the nickel-metal hydride battery according to claim 1 , wherein the nickel oxide comprises the formula NOOK 1/3 . 4. The method for manufacturing the nickel-metal hydride battery according to claim 1 , wherein the nickel oxide has a valence of 3.66.
Assignees
Inventors
Classifications
Manufacturing or production processes characterised by the final manufactured product · CPC title
Nickel oxide or hydroxide electrodes · CPC title
Processes for forming or storing electrodes in the battery container · CPC title
Initial charging measures · CPC title
- H01M10/345Primary
Gastight metal hydride accumulators · CPC title
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- What does patent US11139461B2 cover?
- A method for manufacturing a nickel-metal hydride battery includes: a first step of preparing a first nickel-metal hydride battery having a positive electrode including nickel hydroxide (Ni(OH)2); and a second step of manufacturing the second nickel-metal hydride battery by performing 600% overcharging to the prepared first nickel-metal hydride battery. The 600% overcharging is a process for su…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/345. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 05 2021 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).