Secondary cell and battery pack
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 23, 2022
Grant Date -
Jul 2, 2020
app pub date -
Dec 6, 2019
filing date -
Dec 27, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
A negative electrode terminal includes a flange, and a connection portion disposed on a first surface of the flange. The connection portion is inserted into a terminal attachment hole. The negative electrode terminal includes a first area made of aluminium or an aluminium alloy, and a second area made of copper or a copper alloy. In the flange, the second area is disposed adjacent to the first surface, and the first area is disposed adjacent to the second surface. A boundary between the first area and the second area is disposed between the first surface and the second surface. A thinnest portion of the first area of the flange in the thickness direction of the flange has a thickness of larger than or equal to 0.3 mm. An external electroconductive member made of aluminium or an aluminium alloy is welded to the flange to form a welded portion.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | B2 | JP7296208 | Dec 27, 2018 |
| CN | B | CN111384355 | Dec 02, 2019 |
International Classification(s)
- 2019 Application Filing Year
- H01M Class
- 7948 Applications Filed
- 5409 Patents Issued To-Date
- 68.06 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01M Class
- 0 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Feb 23, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 23, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 23, 2034 |
