Patent RU-2280304-C1 (RU)
Inventor: BELOZEROV AL BERT FEDOROVICH
IPC: H02J7/02
Filed: 2005-01-31
Granted: 2006-07-20
Abstract: FIELD: storage battery charging. 
     SUBSTANCE: proposed charger that has terminals, disconnecting device whose input is connected to terminals, comparison device, mode-of-operation controller whose first input is connected to output of disconnecting device, charge current regulator, discharge current regulator, first timer whose first input functioning as clock input is connected to generator first input and output, to second input of mode-of-operation controller is provided with following newly introduced components: second timer whose first input functions as count enabling input connected to output of disconnecting device and its second input functions as clock input connected to generator second output, third input of second one, as first zero-setting input connected to third output of generator, frequency F1 at generator third output, frequency f1 at generator second output, and scaling ratio N1 of second timer being chosen from condition F1 < f1/N1, its fourth input functioning as second zero-setting input and being connected to first output of mode-of-operation controller, its output being connected to third input of mode-of-operation controller; third timer whose first input functions as count enabling input which is connected to comparison device output, its second input functions as clock input connected to generator fourth output, third input functions as zero-setting input and is connected to generator fifth output, frequency F2 at generator fifth output, frequency f2 at generator fourth output, and scaling factor N2 of this third timer being chosen from condition F2 < f2/N2 < F1, its fourth input functioning as second zero-setting input and being connected to first output of mode-of-operation controller, its output, to fourth input of mode-of-operation controller, second output of the latter being connected to charge current regulator input, third output, to charge current regulator input, fourth output, to second input of first timer that functions as zero-setting input of first timer; charge current regulator output  discharge-current regulator output, and comparison device input are connected to terminals; mode-of-operation controller has first flip-flop whose zero-setting input functions as fourth input of mode-of-operation controller, second flip-flop whose zero-setting input functions as second input of mode-of-operation controller, 2OR gate whose second input functions as third input of mode-of-operation controller, and output is connected to 1-setting input of first flip-flop and to that of second flip-flop and functions as first output of mode-of-operation controller; first 3AND gate whose second input is connected to direct output of first flip-flop and functions as fourth output of mode-of-operation controller, second 3AND gate whose second input is connected to inverted output of first flip-flop and first input, to that of first 3AND gate and functions as first input of mode-of-operation controller; third input is connected to that of first 3AND gate and to direct output of second flip-flop; newly introduced is also initial setting device whose output is connected to first input of 2OR gate. 
     EFFECT: ability of eliminating excess charge of storage batteries. 
     1 cl, 1 dwg