US3720869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery cell structure and method of determining state of charge
Assignee: Raytheon Co
•
Filing: 1970-08-18
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Granted: 1973-03-13
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Expires: 1990-08-18
Abstract
Abstract The method of directly determining or monitoring a state-ofcharge or condition of an electrode contained in an electric cell and modified cell structure provided therefor by making a resistance measurement in a direction at right angles to the interface between the electrode and a separator. The method provides a measure of the conductivity or resistance of an electrode in a cell assembly. The measurement is taken of the resistance of a cell electrode, preferably the anode, by its conversion between a metallic and nonmetallic phase during the course of its charge or discharge.
Inventors
- 👤 J Rowlette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:17
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/50; H01M6/5005; G; G01; G01R; G01R31/00; G01R31/36; G01R31/389; H01M10/00; H01M10/42; H01M10/48; H01M50/00; H01M50/50; H01M50/569; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
The method of measuring the condition of a battery cell containing enclosed electrodes, comprising an anode electrode, a cathode electrode, and an auxiliary electrode in contact with one of said electrodes, and independent terminals for each of said electrodes, the steps consisting of: a. connecting a resistance tester to a terminal of one of said electrodes contained within the battery cell and a terminal of said auxiliary electrode; and b. measuring the resistance across the electrode and the auxiliary electrode in a direction at right angles to the interface between the one of said electrodes and said auxiliary electrode.
Claim 2
Independent Claim
99 words
The method of measuring the condition of a battery cell containing enclosed electrodes, comprising an anode electrode, a cathode electrode, and an auxiliary electrode in contact with one of said electrodes, and independent terminals for each of said electrodes, the steps consisting of: a. connecting a resistance tester to a terminal of one of said electrodes contained within the battery cell and a terminal of said auxiliary electrode; and b. measuring the resistance across the electrode and the auxiliary electrode in a direction at right angles to the interface between the one of said electrodes and said auxiliary electrode.
Claim 3
Independent Claim
99 words
The method of measuring the condition of a battery cell containing enclosed electrodes, comprising an anode electrode, a cathode electrode, and an auxiliary electrode in contact with one of said electrodes, and independent terminals for each of said electrodes, the steps consisting of: a. connecting a resistance tester to a terminal of one of said electrodes contained within the battery cell and a terminal of said auxiliary electrode; and b. measuring the resistance across the electrode and the auxiliary electrode in a direction at right angles to the interface between the one of said electrodes and said auxiliary electrode.
Claim 4
Independent Claim
99 words
The method of measuring the condition of a battery cell containing enclosed electrodes, comprising an anode electrode, a cathode electrode, and an auxiliary electrode in contact with one of said electrodes, and independent terminals for each of said electrodes, the steps consisting of: a. connecting a resistance tester to a terminal of one of said electrodes contained within the battery cell and a terminal of said auxiliary electrode; and b. measuring the resistance across the electrode and the auxiliary electrode in a direction at right angles to the interface between the one of said electrodes and said auxiliary electrode.
Claim 5
Dependent Claim
44 words
The method of claim 1 wherein at least one of the said electrodes is a zinc electrode in contact with an auxiliary electrode and a resistance tester is connected to the opposite sides of the auxiliary electrode and the zinc electrode in contact therewith.
References Cited (Backward Citations)
US2988590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |