Electricity: measuring and testing – Electrolyte properties
Patent
2000-01-12
2000-11-28
Tso, Edward H.
Electricity: measuring and testing
Electrolyte properties
324430, 324432, G01N 2742, G01N 27416
Patent
active
061540331
ABSTRACT:
A system and method for comprehensive analysis of a multi-cell battery, such as of the nickel-cadmium type, on an individual cell level basis and overall battery basis. For an unsealed battery, which affords access to the individual battery cells, (FIG. 2) tests are carried out to determine the presence of any shorted or reversed cells, and these can be repaired or replaced ((6)-(11)). The individual cells are then tested for sufficient electrolyte on the basis of comparing the cell internal resistance to a maximum internal resistance for the cell and electrolyte added as needed ((12)-(15)). A sealed battery, to which there is no access to the individual cells, is first tested for shorted or reversed cells on a battery level basis ((16)-(19)). A sealed battery that passes this test ((20)-(22)) and an unsealed battery whose individual cells have been found to be satisfactory in its prior tests are subjected to further testing on a battery level basis for: (a) overall internal resistance to determine if it exceeds a given maximum value internal resistance, this indicating that the battery is defective (23); and (b) actual capacity as compared to its rated capacity ((24)-(30)). A battery whose actual capacity is greater than its rated capacity is tested for a memory effect and the memory effect problem is corrected if found to be present ((31)-(36)).
REFERENCES:
patent: 3781657 (1973-12-01), Dennstedt
patent: 3808522 (1974-04-01), Sharaf
patent: 4259639 (1981-03-01), Renirie
patent: 4697134 (1987-09-01), Burkum et al.
patent: 5841357 (1998-11-01), Henry et al.
Hoenig Steven
Palanisamy Thirumalai G.
Rudai Patrick M.
Singh Harmohan
Honeywell International , Inc.
Tso Edward H.
Yeadon Loria B.
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