Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1977-06-15
1978-09-12
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 48, 328132, 340636, 361 98, H02J 700, H02H 308
Patent
active
041140834
ABSTRACT:
A device for determining a thermal runaway condition in a nickel-cadmium tery. A current sensor develops a DC voltage proportional to battery current and a converter converts the voltage to a pulse train whose frequency is directly proportional to battery current. The pulse train frequency is monitored for fixed periods of time and changes of frequencies are used to determine the slope of the charge current. A maximum allowable slope is specified and fed into a binary up/down counter which also counts the pulse train frequency. When the difference between two pulse train frequency readings is greater than the maximum allowable, a possible thermal runaway condition is indicated and after a predetermined number of consecutive indications, an indicator is energized to provide a warning.
REFERENCES:
patent: 3017570 (1962-01-01), Floyd
patent: 3116451 (1963-12-01), Hatterschide
patent: 3230452 (1966-01-01), Angello
patent: 3500167 (1970-03-01), Applegate et al.
patent: 3703675 (1972-11-01), Alric et al.
patent: 3889172 (1975-06-01), Lelaidier et al.
patent: 3899732 (1975-08-01), Staby
patent: 3900785 (1975-08-01), Alric et al.
patent: 3940679 (1976-02-01), Brandwein et al.
patent: 4041404 (1977-08-01), Lewis, Jr.
Benham Harold L.
Clark Steven D.
Huffman Hubert L.
Stovall Ronald J.
Collignon Paul S.
Hickey Robert J.
Sciascia R. S.
The United States of America as represented by the Secretary of
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