US3837918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium sulfur storage battery
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1973-03-14
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Granted: 1974-09-24
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Expires: 1993-03-14
Abstract
Abstract This invention relates to a novel sodium sulfur storage battery comprising a double vessel with thermal insulating layer therein and at least one unit cell, each unit cell containing a plurality of individual cells including sulfur as a cathodic reactant, sodium as an anodic reactant and a non-porous solid electrolyte. The storage battery is provided with a temperature control means. According to this invention, performance and durability of the soidum sulfur storage battery are highly improved.
Inventors
- 👤 T Nakabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:00
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/60; H01M10/61; H01M10/613; H01M10/615; H01M10/65; H01M10/651; H01M10/652; H01M10/656; H01M10/6561; H01M10/6563; H01M10/657; H01M10/6571; H01M10/658; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A sodium sulfur storage battery as defined in claim 1, in which said heating device is wound as a helix around the individual cell, and wherein the turns of the helix are closer as the helix rises from bottom to top.
Claim 2
Dependent Claim
65 words
A sodium-sulfur storage battery as defined in claim 1, which includes means for passing a cooling medium, as part of said temperature control means, into and through the storage battery so as to keep constant the inside temperature, said cooling medium passing throughout the vessel wherein the unit cell is placed on a frame made of an insulating material having passageways for said cooling medium.
References Cited (Backward Citations)
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US3424622A
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US3679480A
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US3625767A
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US3703412A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |