METHOD FOR AUTOMATIC MONITORING AND EQUALIZATION OF CHARGING DEGREE OF PARALLEL-SERIAL CONNECTION OF ACCUMULATORS OF UNIT

摘要

FIELD: electrical engineering.;SUBSTANCE: temperature of accumulators and temperature of medium inside sealed housing of accumulator unit are controlled by temperature sensors installed on each accumulator, and temperature sensors uniformly arranged along inner volume of sealed housing. Parallel connection of accumulators in the unit is performed by connection of positive poles of each of m accumulators to the common wire of the row through resistors of the same small value. All rows are connected by accumulator switching unit (3) starting from the first of m parallel-connected accumulators of battery to buses (4) and (5) for measurement of electric parameters. Temperature control of accumulators is carried out by connection to switching unit (6) of all temperature sensors of odd and even rows to odd and even buses (10) and (11) for measurement of accumulator temperature. Sequence of connection of temperature sensors of each accumulator of odd and next even rows is performed by polling with analogue switches (8) and (9). Temperature measurement units (13) and (14) of odd and even rows of accumulators connected by one ends to buses (10) and (11), respectively, and buses (4) and (5) of measurement of electric values of even and odd rows of accumulators, voltage is generated, which is proportional to average value of temperature in all odd and even rows of accumulators, after which outputs of units (13) and (14) generate voltage in form of pulses with amplitude proportional to temperature deviation from average unbalance value. Control signal from microcontroller (12) in case of accumulator recharging is supplied to overcharge compensation unit 21, where compensating voltage pulse is formed with duration proportional to recharge value directed from rechargeable accumulator to j row of accumulators. Control signal from microcontroller (12) in case of undercharge of accumulator is supplied to undercharge compensation unit (22), where voltage pulse is generated with duration proportional to undercharge value directed from h row of accumulators to undercharged accumulator, at that voltage h of accumulator row exceeds voltage j of row of accumulators.;EFFECT: disclosed is a method for automatic monitoring and equalization of charging degree of parallel-series connection of accumulators of unit.;4 cl, 4 dwg