METHOD FOR DETERMINATION OF LEAD ACCUMULATOR BATTERY RESIDUAL CAPACITANCE Russian patent published in 2008 - IPC H01M10/42 H01M10/48 

FIELD: electricity.

SUBSTANCE: discharge current values that are periodically measured in the process of accumulator battery (AB) discharge, voltage in following accumulators, number of conditional full charge-discharge cycle and calculated value of measured capacitance are used to determine two design values of residual capacitance with application of dependences of residual capacitance on discharge voltage and full capacitance on accumulator wear, measure of which is number of conditional full charge-discharge cycle. Parameters of dependences are determined according to auxiliary schedules, which are built in advance using values achieved as a result of approximation of dependences that are received according to data of single-type accumulators tests. In order to visualise the discharge process during AB operation, two curves are built for dependence of design values of residual capacitance on measured capacitance, which make it possible to visually control process of residual capacitance change and confirm validity of received values of residual capacitance. Resulting value of residual capacitance is determined as simple average of two design values of residual capacitance.

EFFECT: higher accuracy of residual capacitance determination.

4 cl, 10 dwg, 2 ex