CN201430458Y

CN201430458Y - Multi-purpose charge controller with automatic power-off function

Info

Publication number: CN201430458Y
Application number: CN2009200894615U
Authority: CN
Inventors: 任佳宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-03-24
Anticipated expiration: 2019-03-31

Abstract

A multi-purpose charge controller with an automatic power-off function is mainly characterized in that a charging control circuit is arranged on a circuit board inside a box body, the charging controlcircuit adopts the structure that a DC power supply source circuit, an automatic power-off control circuit and a timing and controlling socket circuit are directly connected to a power switch socketcircuit; the DC power supply source circuit is connected with the automatic power-off control circuit and the timing and controlling socket circuit for providing the automatic power-off control circuit and the timing and controlling socket circuit with a +12 V DC stabilized voltage supply. The charge controller has the functions of measuring and sampling on the AC side of the charger, power-off controlling, as well as alarming, prompting and automatic power off at the completion of charging; the multi-purpose charge controller can be used for charging control on mobile phones, electric bicycles and notebook computers with different models, and meanwhile, the multi-purpose charge controller can be mounted in the prior charger to form an integrated part, also can be made to be a pre-positioned external circuit control device without modifying the prior charger, and can be used together with the charger directly. Therefore, the utility model has multiple purposes.

Description

Multipurpose charge controller with automatic circuit break function

Technical field

The utility model relates to a kind of charge controller, particularly has the multipurpose charge controller of automatic circuit break function, and it is applicable to the charging control of mobile phone, electric bicycle, notebook computer, rechargeable battery, can control automatically when charging finishes and cut off the electricity supply.

Background technology

At present; mobile phone; notebook computer; electric bicycle; electrical equipment such as rechargeable battery; the charger that is adopted all is only to have the deixis that is full of behind the electricity; and the control of can not cutting off the power supply automatically; in addition; current people's work; life; busy, the time regular meeting forget and in time pull out attaching plug, can make charger be in the power consumption operating state of floating charge so always; this not only can cause energy waste; and with regard to charger itself,, can cause charger case heating distortion or damage owing to be in operating state for a long time; and; because the output of charger has voltage for a long time, can cause storage battery often to overcharge, and reduce the useful life of storage battery.

Summary of the invention

The purpose of this utility model is to provide a kind of multipurpose charge controller with automatic circuit break function; it can make charger in time cut off the electricity supply automatically from AC side when charging finishes; and carry out alarm; can prevent to cause the damage of charger and storage battery effectively because of overcharging; the overcurrent protection function is arranged, and have the controlled function of regularly charging.

Its solution is: the wiring board that is positioned at box body is provided with charging control circuit, this control circuit is to be connected with the dc power supply circuit on the mains switch socket circuit, automatic power-off control circuit and Timing controlling plug seat circuit, the dc power supply circuit is connected with the Timing controlling plug seat circuit with automatic power-off control circuit, and provides+the 12V D.C. regulated power supply for it.Described dc power supply circuit is electrically connected by transformer, bridge rectifier, electric capacity, filter capacitor and three terminal regulator to be formed.

Automatically power-off control circuit is: the first utmost point of current transformer is connected with the mains switch socket circuit; one termination of the inferior utmost point exchanges ground wire; as safeguard protection; on inferior utmost point output, be connected with by rectifier bridge; electric capacity; two resistance and voltage-stabiliser tube are electrically connected the rectification filtering voltage stabilizing circuit of forming; the input in the same way of one termination voltage comparator of this circuit; this end is a positive voltage terminal; the reverse input end of voltage comparator is a negative voltage side; this termination is electrically connected the bleeder circuit of forming by resistance and potentiometer; the output of one termination of this bleeder circuit+12V dc power supply circuit is sent into voltage for referencial use after the+12V D.C. regulated power supply dividing potential drop reverse input end negative voltage side of voltage comparator.The output of voltage comparator forms and connect by being electrically connected by triode and two resistance successively+first Nverter circuit of 12V D.C. regulated power supply, diode and double-throw switch connect the input with the first timer of+dual timer that the 12V D.C. regulated power supply links to each other, on the line between this input and first Nverter circuit, be connected with the floating charge indicating circuit of forming by resistance and light-emitting diode, and by resistance, first charging circuit that potentiometer and charging timing capacitor are formed, the output of the first timer of dual timer, by forming by two resistance and triode and connect+second Nverter circuit and the diode of 12V D.C. regulated power supply, with connect+input of the second timer of the dual timer of 12V D.C. regulated power supply is connected, also be connected with on this input and connect+12V D.C. regulated power supply and by resistance and second charging circuit formed of charging timing capacitor, connecing+be connected to the charging of forming by resistance and light-emitting diode on the input of the second timer of the dual timer of 12V D.C. regulated power supply and the line between second Nverter circuit to finish indicating circuit and alarm, and the output of the second timer of this dual timer is connected with relay coil through diode, and two normally opened contacts of relay are connected on the major loop of mains switch socket.Described dual timer is included in a slice 556 dual timer circuit by first timer circuit and second timer circuit and forms.

The Timing controlling plug seat circuit is to connect+input of the first timer of the dual timer of 12V D.C. regulated power supply, select switch by the double-throw switch selecting, be provided with at the opposite side of selector switch connect+timing of 12V D.C. regulated power supply selects resistor group, it comprises 4 timing resistors, the timing resistor number also can be decided according to the actual requirements in the resistor group but this is regularly selected, connecing+also be connected with by resistance on the input of the first timer of the dual timer of 12V D.C. regulated power supply, potentiometer and charging timing capacitor are electrically connected first charging circuit of forming, the output of described first timer forms and connect by being electrically connected by two resistance and triode successively+reverser and the diode of 12V D.C. regulated power supply, connect input with the second timer of+dual timer that the 12V D.C. regulated power supply links to each other, this input also is connected to be electrically connected by resistance and charging timing capacitor to be formed and connect+second charging circuit of 12V D.C. regulated power supply, at described reverser and connect+line between the input of the second timer of the dual timer of 12V D.C. regulated power supply on, be connected to the charging of forming by resistance and light-emitting diode electrical connection and finish indicating circuit and alarm, and the output of the second timer of this dual timer is succeeded electric apparatus coil by diode, and two normally opened contacts of relay are connected on the major loop of mains switch socket.

The utility model adopts technique scheme, the variation of ac-side current when utilizing current transformer to detect the charger charging, the electric current that detects is converted into voltage through rectification filtering voltage stabilizing circuit, and send into the positive voltage terminal of input in the same way of voltage comparator, compare with the reference voltage that after the bleeder circuit dividing potential drop, is input to voltage comparator reverse input end negative voltage side, when measured value during less than reference value, battery enters floating charge state, the floating charge clearing lamp is bright, voltage comparator output electronegative potential, the first timer of control dual timer begins the floating charge timing, time is 30 minutes to 60 minutes, time arrives, and it is bright that indicator light is finished in charging, and the charging of alarm equipment alarm prompting is simultaneously finished; At this moment, the second timer of dual timer begins timing in 2 minutes, and the time arrives, automatic block system relay coil power, and two normally opened contacts of relay disconnect, and recover normally open, cut off charge power supply.Can also be switching to Timing controlling plug seat by switch, can realize regularly charging, timing cutting power.In a word, the utlity model has the function of measuring sampling, outage control and when charging finishes, can carrying out alarm and cut off the electricity supply automatically in the charger AC side; Can be applicable to the charging control of mobile phone, electric bicycle, notebook computer and the rechargeable battery of different model, simultaneously, it both can be loaded in the existing charger and its formation one, can be made into preposition external circuit control device again, need not to transform existing charger, get final product direct and the supporting use of charger, have multiduty function.

Description of drawings

Fig. 1 is the circuit theory diagrams with multipurpose charge controller of automatic circuit break function.

Fig. 2 is the structural representation with multipurpose charge controller of automatic circuit break function.

Embodiment

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Among Fig. 1, Fig. 2, on the panel of box body 61, be distributed with socket aperture 9 and 10,

potentiometer

18 and 25, double-throw switch 35, interlock start button 3 and 5, selector switch 32, the light-emitting diode 8 in the power supply signal indicating circuit, the light-emitting diode 47 in the indicating circuit is finished in light-emitting diode 37 in the floating charge indicating circuit and charging, and plug 62 is arranged on the side of box body 61.Be provided with wiring board 60 in box body 61, this wiring board 60 is provided with charging control circuit.This charging control circuit is, connect～zero line 1 and the live wire 2 of the plug 62 of 220V AC power be electrically connected with corresponding socket aperture 9 and socket aperture 10 respectively.Be connected on the zero line 1 and the line between the socket aperture 9 of plug 62 after button 3 in the interlock start button and the normally opened contact of relay 53 4 are in parallel, and the end tie point of this button 3 and relay 53 normally opened contacts 4 after in parallel is A.Be connected on the live wire 2 and the line between the socket aperture 10 of plug 62 after button 5 in the interlock start button and relay 53 normally opened contacts 6 are in parallel, the tip node after this button 5 and relay 53 normally opened contacts 6 are in parallel is B.The power supply signal indicating circuit of being made up of resistance 7 and light-emitting diode 8 is connected in parallel on A, the B contact, and the first utmost point of current transformer 11 is serially connected on the live wire 2 and the line between the socket aperture 10 of plug 62, forms the major loop of mains switch socket.By transformer 55, rectifier bridge 56,

electric capacity

57 and 59 and three terminal regulator 58 be electrically connected the dc power supply circuit of forming, be connected on by the first utmost point of transformer 55 on the A, B contact of mains switch socket major loop, it can offer charging control circuit to～220V AC power output+12V D.C. regulated power supply after transformation, rectification, filtering, voltage stabilizing.The inferior utmost point of current transformer 11, wherein a termination exchanges ground wire 33, be connected with by rectifier bridge 12, electric capacity 14, resistance 13, resistance 15 and voltage-stabiliser tube 16 on current transformer 11 time extreme and be electrically connected the rectification filtering voltage stabilizing circuit of forming, one of this circuit is exported the positive voltage terminal of input in the same way of termination voltage comparator 20.Another output is as common ground.Be electrically connected the bleeder circuit of forming by resistance 17 with potentiometer 18 and be connected, pass through the one termination+12V D.C. regulated power supply of resistance 17 simultaneously again, by a termination common ground of potentiometer 18 with the reverse input end negative voltage side of voltage comparator 20.Be conveyed into the reverse input end negative voltage side of voltage comparator 20 after this bleeder circuit handle+12V D.C. regulated power supply voltage dividing potential drop as reference voltage.The output of voltage comparator 20 is connected with the resistance 19 of one termination+12V D.C. regulated power supply, is connected with resistance 21 again.The other end of resistance 21 is connected with the base stage of triode 23, and its emitter connects common ground, and collector electrode is connected with the resistance 22 of one termination+12V D.C. regulated power supply, forms first Nverter circuit, can carry out paraphase to the control signal from voltage comparator 20.The collector electrode of triode 23 is input 6 pin of the first timer 31 that connects dual timer of a end points and the e end points by diode 34 and double-throw switch 35 again.The a end points of one termination double-throw switch 35 of charging timing capacitor 38, another termination common ground.The negative pole of a terminating diode 34 after current-limiting resistance 36 is connected with light-emitting diode 37, another termination common ground indicates charging to enter floating charge state by light-emitting diode 37.2 pin of the first timer 31 that resistance 24 back one termination+12V D.C. regulated power supply of connecting with potentiometer 25, other end b end points and the d end points by double-throw switch 35 connects dual timer, and form first charging circuit with charging timing capacitor 38.4 pin, 14 pin of the first timer 31 of dual timer connect respectively+the 12V D.C. regulated power supply, and 7 pin connect common ground, and 3 pin are connected with the electric capacity 39 that connects common ground.2 pin again the d end points by double-throw switch 35 with connect+diode 30 of 12V D.C. regulated power supply is connected, also select switch 32 simultaneously by the d end points and the selecting of c end points of double-throw switch 35, be provided with at the other end of selector switch 32 and connect+the charging timing resistor group of 12V D.C. regulated power supply, timing resistor number in this charging timing resistor group can be decided according to the actual requirements, be example with four

timing resistors

26,27,28,29 now, these four timing resistors can be distinguished the different timing time of the first timer 31 of corresponding dual timer.The resistance 44 that links to each other with output 5 pin of the first timer 31 of dual timer, the base stage of its another termination triode 42, the emitter of triode 42 connects common ground, collector electrode connects and+resistance 41 that the 12V D.C. regulated power supply joins, form second Nverter circuit, can be with control signal paraphase from the first timer 31 of dual timer.The collector electrode of triode 42 connects input 8 pin of the second timer 45 of dual timer again by diode 49.Resistance 46 is with after light-emitting diode 47 is connected in series, one termination common ground, the collector electrode of another termination triode 42, the indication of representing to charge and finishing by light-emitting diode 47, the collector electrode of triode 42 is connected with the alarm 48 that connects common ground again, while is connected with the charging timing capacitor 50 that connects common ground through the negative pole of diode 49 again, 12 pin of the mat woven of fine bamboo strips two timers 45 of dual timer respectively with connect+diode 43 of 12V D.C. regulated power supply is connected with resistance 44, and resistance 44 is formed second charging circuit with charging timing capacitor 50.10 pin of the mat woven of fine bamboo strips two timers 45 of dual timer connect+the 12V D.C. regulated power supply, and 11 pin are connected with the electric capacity 51 that connects common ground, and 9 pin are output, and it is connected with the coil and the diode 54 of the relay 53 that connects common ground respectively by diode 52.And charging control circuit+12V D.C. regulated power supply input and dc power supply circuit+12V D.C. regulated power supply output is connected.

Described current transformer 11 is ring-type iron cores of being made by permalloy, and the element of the detection electric current formed of first and second coil on this iron core; Described voltage comparator 20, its model are LM339; Described dual timer is included in a slice 556 dual timer circuit by the circuit of the circuit of first timer 31 and second timer 45 to be formed, first timer 31 is as floating charge timing or the control timing of long delay time, second timer 45 time-delays disconnected charge controller AC side circuit and make the charger outage as alarm and automatic block system relay 53 coil powers in 2 minutes.

During charging, at first with charger or rechargeable battery and the grafting of this charge controller, again the plug 62 of this charge controller and～220V AC power are pegged graft, push interlock start button 3 and 5 then, relay 53 coil adhesives, its normally opened contact 4 and normally opened contact 6 closures, charge power supply is connected, light-emitting diode 8 indications, the charging beginning.Owing to just begun charging, charging current is big, by current transformer 11 detected charging alternating currents through rectifier bridge 12 rectifications, electric capacity 14 filtering are after resistance 15 is converted to voltage, after voltage-stabiliser tube 16 voltage stabilizings, be input to the positive voltage terminal of input in the same way of voltage comparator 20 again, compare with the reference voltage of voltage comparator 20 reverse input end negative voltage sides, and the reference voltage of this reverse input end negative voltage side by+the 12V D.C. regulated power supply is given after resistance 17 and potentiometer 18 dividing potential drops, and adjust reference voltage by potentiometer 18, because voltage comparator 20 is the input positive voltage terminal in the same way, reference voltage greater than its reverse input end negative voltage side, at this moment, voltage comparator 20 output high potentials make triode 23 saturation conductions, and triode 23 collector potentials are near the electronegative potential of 0.3v.When double-throw switch 35 is invested " control automatically " end, the b end points of double-throw switch 35 and d end points are connected, a end points and e end points are also connected, c end points and d end points disconnect, the 0.3v low-voltage of triode 23 collector electrodes is transported to 6 pin of the first timer 31 of dual timer by diode 34, and makes it clamp down on the electronegative potential at 0.3v; But under the regulating action of position adjuster 25, adjusted the floating charge time of first timer 31 between 30-60 minute; Because 6 pin of this first timer 31 are clamped at the 0.3v electronegative potential, its output 5 pin are just exported high potential, make triode 42 saturation conductions, triode 42 current collections are 0.3v electronegative potential and be transported to 8 pin of dual timer second timer 45 through diode 49 very, this 8 pin is clamped at the 0.3v electronegative potential, the output 9 pin output high potential of the second timer 45 of dual timer makes the coil of relay 53 keep adhesive.Simultaneously, the voltage at electric capacity 38, electric capacity 50 their the two two ends can not suddenly change during start just, and voltage is zero, and input 8 pin of input 6 pin of the first timer 31 of dual timer and second timer 45 are the 0.3v electronegative potential, they the two output 5 pin and 9 pin output high potential then, make the coil of relay 53 keep adhesive, the normally opened contact 4 of relay, normally opened contact 6 closures, the charging circuit power supply keeps on-state.After battery was full of electricity, charging current reduced, and charging enters floating charge state, and ac-side current also reduces, deliver to after detecting through current transformer 11 voltage comparator 20 in the same way the voltage of input positive voltage terminal reduce.If this positive voltage is during less than the negative reference voltage of voltage comparator 20 reverse input end negative voltage sides, light-emitting diode 37 is bright, the pilot cell charging enters floating charge state, diode 34 oppositely ends, the input 6 pin clampers of the first timer 31 of dual timer are removed, + 12V D.C. regulated power supply gives electric capacity 38 chargings by resistance 24, potentiometer 25, and battery charge enters the time of floating charge state and can determine by position adjuster 25.Floating charge state finishes back electric capacity 38 voltages and raises, the input 6 pin voltages of the first timer 31 of dual timer raise, when reaching certain value, its output 5 pin output transfers electronegative potential to by high potential, triode 42 ends, its collector electrode transfers high potential to, light-emitting diode 47 luminous indications are full of, while alarm 48 alarms, at this moment diode 49 oppositely ends, the input 8 pin clampers of the second timer 45 of dual timer are removed, and+12V D.C. regulated power supply gives electric capacity 50 chargings by resistance 44, is 2 minutes regularly, in 2 minutes if do not pull out charge power supply, then after the time, the input 8 pin current potentials of the second timer 45 of dual timer raise, and the output of output 9 pin transfers electronegative potential to by high potential, the coil of relay 53 discharges, its normally opened contact 4, normally opened contact 6 discharges, and the charging ac main power disconnects, and charging stops.

When double-throw switch 35 was invested the timing controlled end, the end points C of double-throw switch 35 and end points d connected, and end points a and end points e disconnect, and end points b and end points d disconnect, and have become charging Timing controlling plug seat circuit.And the selection in charging interval selects different resistance to determine the different charging intervals by selector switch 32, because the model of various batteries and charger is different, charging interval is also different, when giving the cell-phone charging of different model, can select to delay time 2.5 hours, 3 hours, 3.5 hours, 4 hours; When giving electric bicycle, the rechargeable battery charging of different model, can select to delay time 8.5 hours, 10 hours, 12 hours, 15 hours.At this moment ,+the 12V D.C. regulated power supply is added on the first timer 31 and second timer 45 of dual timer.Because electric capacity 38, electric capacity 50 their the two both end voltage all can not be suddenlyd change, be zero when beginning because of this voltage, input 6 pin of the first timer 31 of dual timer and input 8 pin of second timer 45 begin to be electronegative potential, and their output 5 pin and 9 pin output high potential, make relay 53 coils keep adhesive, its normally opened contact 4, normally opened contact 6 closures, charge power supply keeps connecting, at this moment, electric capacity 38 is pressed selector switch 32 charging interval required according to rechargeable battery, selected resistance 26, resistance 27, resistance 28, the resistance value that resistance 29 is different, corresponding different charge constant begins charging.When charging finishes, the input 6 pin current potentials of the first timer 31 of dual timer uprise, output 5 pin current potential step-downs, triode 42 ends, the output of triode 42 collector electrodes transfers high potential to by electronegative potential, when battery is full of, light-emitting diode 47 luminous indications, alarm 48 alarms, at this moment diode 49 oppositely ends, input 8 pin of the second timer 45 of dual timer are removed current potential and are clamped down on, + 12V D.C. regulated power supply begins regularly 2 minutes, not pull up charge power supply to the time if having to electric capacity 50 chargings by resistance 44, the input 8 pin current potentials of the second timer 45 of dual timer raise after 2 minutes, output 9 pin current potentials transfer electronegative potential to by high potential, and relay 53 coil losing electricities discharge, its normally opened contact 4, normally opened contact 6 discharges, ac main power cuts off, and charging finishes.

Claims

1, a kind of multipurpose charge controller with automatic circuit break function, it is characterized in that being positioned on the wiring board (60) of box body (61), be provided with charging control circuit, this circuit is to be connected with the dc power supply circuit on the mains switch socket circuit, automatic power-off control circuit and Timing controlling plug seat circuit, and the dc power supply circuit is connected with the Timing controlling plug seat circuit with automatic power-off control circuit, for it provides+the 12V D.C. regulated power supply, described dc power supply circuit is by transformer (55), bridge rectifier (56), electric capacity (57), electric capacity (59) and three terminal regulator (58) are electrically connected to be formed.

2, multipurpose charge controller with automatic circuit break function as claimed in claim 1, it is characterized in that automatic power-off control circuit is, elementary and the mains switch socket circuit of current transformer (11) is connected, a secondary termination exchanges ground wire (33), on secondary output end, be connected with by rectifier bridge (12), electric capacity (14), resistance (15), resistance (13) and voltage-stabiliser tube (16) are electrically connected the rectification filtering voltage stabilizing circuit of forming, the positive voltage terminal of input in the same way of one termination voltage comparator (20) of this circuit, the reverse input end negative voltage side of voltage comparator (20), connect by resistance (17) and potentiometer (18) and be electrically connected the bleeder circuit of forming, the output of one termination of this bleeder circuit+12V dc power supply circuit is sent into voltage for referencial use after the+12V D.C. regulated power supply dividing potential drop reverse input end negative voltage side of voltage comparator (20).The output of voltage comparator (20) passes through successively by triode (23), resistance (21), resistance (22) be electrically connected to form and connect+first Nverter circuit of 12V D.C. regulated power supply, diode (34) and double-throw switch (35) connect the input with the first timer (31) of+dual timer that the 12V D.C. regulated power supply links to each other successively, on the line between this input and first Nverter circuit, be connected with the floating charge indicating circuit of forming by resistance (36) and light-emitting diode (37), and by resistance (24), first charging circuit that potentiometer (25) and charging timing capacitor (38) are formed, the output of the first timer of dual timer (31), by by resistance (40), resistance (41) and triode (42) are electrically connected by forming and connect+second Nverter circuit and the diode (49) of 12V D.C. regulated power supply, with connect+input of the second timer (45) of the dual timer of 12V D.C. regulated power supply is connected, also be connected with on this input and connect+12V D.C. regulated power supply and by resistance (44) and second charging circuit formed of charging timing capacitor (50), connect+be connected to the charging of forming by resistance (46) and light-emitting diode (47) on the input of the second timer (45) of the dual timer of 12V D.C. regulated power supply and the line between second Nverter circuit to finish indicating circuit and alarm (48), and the output of the second timer of this dual timer (45) is connected through the coil of diode (52) with relay (53), the normally opened contact (4) and the normally opened contact (6) of relay (53) are connected on the major loop of mains switch socket, and described dual timer is that the circuit with the circuit of first timer (31) and second timer (45) is included in a slice 556 dual timer circuit and forms.

3, multipurpose charge controller with automatic circuit break function as claimed in claim 1, it is characterized in that the Timing controlling plug seat circuit is to connect+input of the first timer (31) of the dual timer of 12V D.C. regulated power supply, select switch (32) by double-throw switch (35) selecting, be provided with at the opposite side of selector switch (32) connect+timing of 12V D.C. regulated power supply selects resistor group, this regularly selects resistor group to comprise resistance (26), resistance (27), resistance (28), resistance (29), connecing+also be connected with by resistance (24) on the input of the first timer (31) of the dual timer of 12V D.C. regulated power supply, first charging circuit that potentiometer (25) and charging timing capacitor (38) are formed, and described first timer (31) output passes through successively by resistance (40), resistance (41) and triode (42) are electrically connected to be formed and connect+reverser and the diode (49) of 12V D.C. regulated power supply, connect input with the second timer (45) of+dual timer that the 12V D.C. regulated power supply links to each other, this input also is connected to be electrically connected by resistance (44) and charging timing capacitor (50) to be formed and connect+second charging circuit of 12V D.C. regulated power supply, at described reverser and connect+line between the input of the second timer (45) of the dual timer of 12V D.C. regulated power supply on, be connected to the charging of forming by resistance (46) and light-emitting diode (47) electrical connection and finish indicating circuit and alarm (48), and the output of the second timer of this dual timer (45) is succeeded the coil of electrical equipment (53), the normally opened contact (4) of relay (53) by diode (52), normally opened contact (6) is connected with the major loop of mains switch socket.