CN202084962U - Vehicle-mounted power supply control device - Google Patents
Vehicle-mounted power supply control device Download PDFInfo
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- CN202084962U CN202084962U CN 201120178648 CN201120178648U CN202084962U CN 202084962 U CN202084962 U CN 202084962U CN 201120178648 CN201120178648 CN 201120178648 CN 201120178648 U CN201120178648 U CN 201120178648U CN 202084962 U CN202084962 U CN 202084962U
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Abstract
The utility model relates to the field of vehicle-mounted power supply control, in particular to a vehicle-mounted power supply control device for electric consumption equipment, which provides the vehicle-mounted power supply control device by aiming at the problems in the prior art. The vehicle-mounted power supply control device adopts a second switch Q2 to be combined with the storage battery charging and discharging for controlling a first switch Q1 to carry out total control on the input voltage in the multi-path input environment, in addition, the charging and discharging selection control is carried out on the vehicle-mounted additional storage battery, the power supply input selection confusion problem is effectively solved, the real-time monitoring is realized through an electric quantity indication circuit, in addition, the voltage of the storage battery is displayed, the over current protection is carried out on the output voltage in three modes, and the safety and the reliability of the output voltage are ensured. Through the device, each module is in effective connection, so the design of the device is completed. The vehicle-mounted power supply control device is mainly applied to the field of vehicle-mounted power supply control.
Description
Technical field
The utility model relates to vehicle power control field, particularly relates to the power control of vehicle-mounted power consumption equipment.
Background technology
At present, (is example with Vehicular accumulator cell, silicon rectification generator, civil power three input environments) vehicle-mounted electric power system circuit comprises civil power input circuit, storage battery input circuit, silicon rectification generator input circuit as shown in Figure 1 under many input environments.When silicon rectification generator is worked, the 3rd breaker closing, disconnect when first circuit breaker (two double break mode of opening) disconnection, second circuit breaker, the silicon rectification generator output loop is connected, give load (mobile unit) power supply by inverter conversion back, while silicon rectification generator output directly is connected on storage battery two ends constant voltage and charges a battery; When the needs battery-operated, second breaker closing disconnects when the disconnection of first circuit breaker, the 3rd circuit breaker, and storage battery output powers for load (equipment on the car) by inverter conversion back; When the outside has civil power to insert, first breaker closing, second circuit breaker disconnects, and the 3rd circuit breaker disconnects, and civil power input 220V is directly to the mobile unit power supply, but existing problems have in actual applications:
At first, power supply input is selected chaotic, and the power supply input of different forms will be controlled by switch independently, must guarantee to have only one tunnel conducting in the operating process, if operating mistake when opening all the other circuit breakers simultaneously, serious power supply trouble will take place.
Secondly, with regard to the charge in batteries mode, present most of Vehicular accumulator cells all are to charge by the direct storage battery of silicon rectification generator, make storage battery be in the constant voltage charge state always, may cause accumulator super-charge, significantly reduce the life of storage battery; For avoiding above shortcoming also can adopt charger to charge, but precondition is the outside civil power input is arranged, limited the charging environment of storage battery.
At last, mobile unit civil power input mode is by protection facilities such as fuse or circuit breakers output overloading partly to be protected.Select for use this kind safeguard measure can have effectively overload protection is carried out in output, but the fluctuation of the time delay of circuit breaker and saltus step current range, and the misoperation probability that causes circuit breaker is than danger big and that exist arcing to discharge.
The utility model content
The technical solution adopted in the utility model is at having problems in the prior art, a kind of vehicle power control device is provided, this device employing second switch Q2(main switch) controls the first switch Q1 in conjunction with accumulator cell charging and discharging the input voltage under the multichannel input environment is totally controlled, and the vehicle-mounted holding storage battery that adds is discharged and recharged selection control.Under the condition that storage battery, silicon rectification generator and civil power Alternating Current Power Supply all exist; the user only needs to be used by the second switch Q2 and the first switch Q1; when being selected, car electricity and civil power can discharge and recharge control to storage battery; efficiently solve the power supply input and select chaotic problem; detect indicating circuit monitoring in real time and show accumulator electric-quantity by electric weight; and three kinds of mode input voltages are carried out overcurrent protection, guaranteed power work safety, reliable.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of vehicle power control device, comprise that storage battery, silicon rectification generator, inverter, commercial power interface, charger, fuse, filter, charger, power supply selection circuit, electric weight detect indicating circuit, current foldback circuit, wherein power supply selects circuit to comprise the first switch Q1, second switch Q2, first relay K 1, second relay K 2, the 3rd relay K 3, diode array circuit; Described storage battery two ends are connected with electric weight detection indicating circuit two ends respectively, battery positive voltage is connected with the first switch Q1, second pin, first relay K, 1 three-prong, second relay K, 2 first pins, the 3rd relay K 3 the 4th pin respectively; Battery terminal negative is connected with the first switch Q1 the 5th pin, silicon rectification generator negative pole, charger the 3rd port respectively; The first switch Q1, first pin, the first switch Q1 the 4th pin are connected with the 3rd relay K 3 first pins, the 3rd relay K 3 second pins respectively; The first switch Q1 three-prong, the first switch Q1 the 6th pin are connected with first relay K, 1 second pin, first relay K, 1 first pin respectively; Input port of first relay K 1 the 4th pin and diode array circuit is connected; First relay K, 1 three-prong is connected with battery positive voltage; Second relay K 2 the 4th pin is connected with another input pin of diode array circuit; Second relay K, 2 second pins, second relay K, 2 three-prongs are connected with silicon rectification generator negative pole, silicon rectification generator positive pole respectively; The silicon rectification generator negative pole is connected with inverter port, a battery terminal negative respectively; Diode array circuit output end mouth is connected by another port of current foldback circuit and inverter; Two output ports of inverter are connected with second switch Q2 first pin, second switch Q2 three-prong; Commercial power interface one end passes through to be connected with second switch Q2 the 4th pin behind fuse, the filter; The commercial power interface other end is connected with second switch Q2 the 6th pin; Second switch Q2 second pin is first output pin, and second switch Q2 the 5th pin is second output pin.
Described diode array circuit comprises the first diode circuit in parallel, the second diode circuit in parallel, the described first diode circuit in parallel, the second diode circuit in parallel comprise n or n+1 diode parallel connection respectively, the described first parallel diode circuit negative electrode, the first parallel diode circuit negative electrode are connected with inverter respectively, the described first parallel diode circuit anode is connected with first relay K 1 the 4th pin, and the described second diode circuit anode in parallel is connected with second relay K 2 the 4th pin.
Described electric weight detects indicating circuit and comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, voltage reference circuit, the 3rd comparator N11, the first diode VD1, the second diode VD2, the 3rd diode VD3, the first triode N3, battery charger, series connection first resistance R 1 between described storage battery interface two pins, second resistance R 2, first resistance R 1 and second resistance R, 2 links and the 3rd comparator N11 the 4th pin, the 3rd comparator N11 the 6th pin, the 3rd comparator N11 the 8th pin concurrent connects, second switch Q2 the 5th pin, second switch Q2 second pin and voltage reference circuit the 4th port, the voltage reference circuit five-port connects, voltage reference circuit first port, voltage reference circuit second port, voltage reference circuit the 3rd port respectively with the 3rd comparator N11 the 5th pin, the 3rd comparator N11 the 7th pin, the 3rd comparator N11 the 9th pin connects, the 3rd comparator N11 first pin, the 3rd comparator N11 second pin, the 3rd comparator N11 the 14 pin respectively with the first diode VD1 anode, the second diode VD2 anode, the 3rd diode VD3 anode connects, the first triode N3 collector electrode is connected with the 3rd comparator N11 first pin, the first triode N3 base stage is connected with battery charger the 3rd port by the 3rd resistance R 3, the first triode N3 emitter, the first diode VD1 negative electrode, the second diode VD2 negative electrode, the 3rd diode VD3 negative electrode is connected with battery charger second port jointly, charger the 4th port is connected with battery charger first port, and the 3rd relay K 3 first pins are connected with battery charger.
Described battery charger comprises the 4th resistance R 10, the 5th resistance R 11, the 6th resistance R 12, the 7th resistance R 13, the second voltage chip N8, the second comparator N9, PMOS manages V1, trigger N12, described the 3rd relay K 3 first pins are connected with the second voltage chip N8 three-prong, the second voltage chip N8, first pin is connected with the second comparator N9, second pin by the 4th resistance R 10, the second voltage chip N8, second pin is connected with the second comparator N9, second pin by the 5th resistance R 11, the second voltage chip N8, second pin is connected with the second comparator N9, second pin by the 6th resistance R 12, the second comparator N9 three-prong is connected with charger the 4th port, PMOS pipe V1 grid is connected with the second comparator N9, first pin, PMOS pipe V1 source class is connected with the second voltage chip N8, second pin, PMOS pipe V1 drain electrode is connected with trigger N12 the 14 pin, the 7th resistance R 13 of connecting between trigger N12 first pin and trigger N12 second pin, series capacitance C between trigger N12 first pin and trigger N12 the 7th pin, trigger N12 second pin is connected with the 3rd resistance R 3.
Described current foldback circuit comprises Hall current sensor; the 4th relay K 4; the 5th relay K 5; the first comparator N5; the first voltage chip N6; the second triode N4; the 4th diode VD4; loud speaker; quiet reset circuit; described diode array circuit output end respectively with the Hall current sensor input; the first voltage chip N6 three-prong connects; the first voltage chip N6, second pin; the first voltage chip N6, first pin respectively with the first comparator N5, second pin; the first comparator N5 the 4th pin connects; the first comparator N5 three-prong is connected with the second triode N4 base stage by the 4th resistance R 4; 3 outputs of Hall current sensor respectively with the 5th relay K 5 three-prongs; the 4th relay K 4 the 7th pin; the 4th relay K 4 the 6th pin connects; the 5th relay K 5 first pins are connected with the 4th relay K 4 the tenth pin; the 5th relay K 5 the 4th pin is connected with first pin of inverter; the 4th relay K 4 the 12 pin and loud speaker; the 4th diode VD4 anode connects, the second triode N4 emitter; the 4th diode VD4 negative electrode is connected with the first comparator N5 the 4th pin.
From above-mentioned architectural feature of the present utility model as can be seen, its advantage is:
1. (civil power is preferential according to priority orders for the vehicle power control device, silicon rectification generator secondly, be storage battery power supply at last) input mode of power supply is selected, solved fully by switch independently and controlled the operate miss that may bring and reduced outside hard switching interface quantity, storage battery charges and discharge the use of switch cooperation power supply supply power mode selector switch simultaneously, has finished charging and discharging of accumulator control when the supply power mode of carrying out car load is selected.
2. detect indicating circuit by electric weight and protected safety in the battery use effectively, also make vehicle mounted accumulator cell charging and discharging more flexible.
3. the electric weight in the vehicle power control device detects indicating circuit, circuit, the organic combination of current foldback circuit are selected in power supply, and the safety of having protected storage battery to use effectively makes vehicle mounted accumulator cell charging and discharging more flexible.
4. the overload protection in the vehicle power control device partly adopts current foldback circuit accurately, time delay and the fluctuation of saltus step current range and the danger of arcing of the air switch existence that solves effectively.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a vehicle power power supply control apparatus schematic diagram in the prior art;
Fig. 2 is circuit theory diagrams of the present utility model:
Fig. 3 is that the utility model electric weight detects indicating circuit;
Fig. 4 is the utility model current foldback circuit;
Fig. 5 is the battery charger schematic diagram.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Preferred embodiment
The device model introduction that is designed in this device:
Charger (lead acid batteries charger) function introduction.
Charger mainly is through inner rectification and Filtering Processing the alternating current 220V voltage signal, again through after the control, export a constant current signal and charge a battery, report and submit corresponding signal the charged state of storage battery to be monitored in real time by charger the 4th port simultaneously to battery charger.
The first switch Q1:Q1, first pin, three-prong, the 4th pin, the 6th pin are external pin; Q1 second pin is connected with supply voltage; The 5th pin is connected with power supply ground; Under certain state of a control, second switch Q2 second pin can be connected with Q1 first pin or the 4th pin respectively, and second switch Q2 the 5th pin can be connected with Q1 the 4th pin or the 6th pin; Q1 second pin, Q1 the 5th pin are connected with accumulator anode and cathode respectively in this design.The first switch Q1 model can be the S43-AT503-418-508 that Japanese NKK company produces.
Second switch Q2 model is 3646NF.
The 3rd relay K 3 models are JZC-11F.
The 4th relay K 4 models are DS1E-M-DC12V.
The first voltage comparator N5, the second voltage comparator N9 model are LM393.
Tertiary voltage comparator N11 model is LM339.
The first voltage chip N6, the second voltage chip N8 model are SPX1117M-5.0.
Trigger N12 model is 74HC14D.
Diode array circuit: comprise the first diode circuit in parallel, the second diode circuit in parallel, the described first diode circuit in parallel, the second diode circuit in parallel comprise n or n+1 diode parallel connection respectively, the described first parallel diode circuit negative electrode, the second parallel diode circuit negative electrode are connected with inverter respectively, the described first parallel diode circuit anode is connected with first relay K 1 the 4th pin, and the described second diode circuit anode in parallel is connected with second relay K 2 the 4th pin.The n=5 of design design this time, then diode altogether is totally 10, and maximum can be carried the electric current of 50A.
Can occur device pin from accompanying drawing 2-4 has repetition, but same input/output port sign of no use is to draw for convenience.Therefore be same pin for the device pin sign that like-identified is arranged.
Circuit theory diagrams of the present utility model as shown in Figure 2, this device employing second switch Q2(main switch) controls the first switch Q1 in conjunction with accumulator cell charging and discharging the input voltage under the multichannel input environment is totally controlled, and the vehicle-mounted holding storage battery that adds is discharged and recharged selection control.Under the condition that storage battery, silicon rectification generator and civil power Alternating Current Power Supply all exist, the user only needs to be used by the second switch Q2 and the first switch Q1, can discharge and recharge control to storage battery when car electricity and civil power are selected.This device comprises storage battery, silicon rectification generator, inverter, commercial power interface, charger, fuse, filter, charger, it is characterized in that also comprising that power supply selection circuit, electric weight detect indicating circuit, current foldback circuit, wherein power supply selects circuit to comprise the first switch Q1, second switch Q2, first relay K 1, second relay K 2, the 3rd relay K 3, diode array circuit; Described storage battery two ends are connected with electric weight detection indicating circuit two ends respectively, battery positive voltage is connected with the three-prong of the first switch Q1, second pin, first relay K 1, first pin of second relay K 2, the 4th pin of the 3rd relay K 3 respectively; Battery terminal negative is connected with the first switch Q1 the 5th pin, silicon rectification generator negative pole, charger the 3rd port respectively; The first switch Q1, first pin, the first switch Q1 the 4th pin are connected with the 3rd relay K 3 first pins, the 3rd relay K 3 second pins respectively; The first switch Q1 three-prong, the first switch Q1 the 6th pin are connected with first relay K, 1 second pin, first relay K, 1 first pin respectively; Input port of the 4th pin of first relay K 1 and diode array circuit is connected; First relay K, 1 three-prong is connected with battery positive voltage; Second relay K 2 the 4th pin is connected with another input port of diode array circuit; Second relay K, 2 second pins, second relay K, 2 three-prongs are connected with silicon rectification generator negative pole, silicon rectification generator positive pole respectively; The silicon rectification generator negative pole is connected with inverter port, a battery terminal negative respectively; The diode output mouth is connected by another port of current foldback circuit and inverter; Two output ports of inverter are connected with first pin, the second switch Q2 three-prong of second switch Q2; Commercial power interface one end passes through to be connected with the 4th pin of second switch Q2 behind fuse, the filter; The commercial power interface other end is connected with the 6th pin of second switch Q2; Second pin of second switch Q2 is first output pin, and the 5th pin of second switch is second output pin.
Working method is divided into following several situation.
One, the course of work of whole device:
1, mains-supplied situation
Pass through commercial power interface, second switch Q2 three-prong and second switch Q2 second pin are connected, second switch Q2 the 6th pin and second switch Q2 the 5th pin are connected, and this moment, second switch Q2 second pin, second switch Q2 the 5th pin output AC electricity 220V were to load (mobile unit) and charger first port, charger second port.
(1), the first switch Q1 is in charged state (accumulator electric-quantity deficiency)
The first switch Q1, first pin and the first switch Q1, second pin are connected, the first switch Q1 the 5th pin and the first switch Q1 the 4th pin are connected, the first switch Q1, first pin, the first switch Q1, second pin output battery tension, the first switch Q1, first pin is connected with first pin, the 3rd relay K 3 second pins of the 3rd relay K 3 respectively with the first switch Q1, second pin simultaneously, and the 3rd relay K 3 first pins are connected with electric weight detection indicating circuit simultaneously.Owing to exist pressure reduction therefore between the 3rd relay K 3 first pins, second pin, the 3rd relay K 3 three-prongs, the 3rd relay K 3 the 4th pin are communicated with, the 3rd relay K 3 closures, charger (giving charger) three-prong, the 5th pin output AC because of second switch Q2 second pin, second switch Q2 the 5th pin output AC electricity, charge a battery, charger the 4th pin send the charging index signal to detect indicating circuit for the some electric weight simultaneously.
(2), the first switch Q1 is in power supply state (accumulator electric-quantity is saturated)
The first switch Q1 three-prong is connected with the first switch Q1, second pin, the first switch Q1 the 5th pin is connected (the first switch Q1, first pin and the first switch Q1, second pin disconnection simultaneously with the first switch Q1 the 6th pin, the first switch Q1 the 5th pin and the first switch Q1 the 4th pin disconnect), because the first switch Q1 three-prong is connected with first relay K, 1 second pin, the first switch Q1 the 6th pin is connected with first relay K, 1 first pin, so have 12V(between first relay K, 1 second pin and first relay K, 1 first pin as long as relay will conducting when having both positive and negative polarity pressure reduction more than or equal to 10V between second pin of first relay K 1 and first relay K, 1 first pin.When accumulator anode and cathode pressure reduction is less than 10V certainly, not conducting between first relay K, 1 second pin and first relay K, 1 first pin at this moment) pressure reduction, so first relay K, 1 closure, first relay K, 1 three-prong is communicated with the 3rd relay K 3 the 4th pin, and accumulator electric-quantity sends voltage to the diode array circuit by first relay K 1 of closure.
2, there is not the mains-supplied situation
Second switch Q2 first pin is communicated with second switch Q2 second pin, and second switch Q2 the 4th pin is communicated with second switch Q2 the 5th pin,
(1), if when silicon rectification generator and storage battery all have voltage output
A, the first switch Q1 are in power supply state
Because silicon rectification generator voltage ratio battery tension is high slightly, so after the selection of diode array circuit, the silicon rectification generator supply power voltage is sent into inverter conversion (this moment, battery tension was cut off), and then give load (mobile unit) power supply by second switch Q2 the 5th pin and second switch Q2 the 5th pin.
B, the first switch Q1 are in the charging electricity condition
Because the first switch Q1 is in charged state, this moment, three-prong and the first switch Q1, second pin of the first switch Q1 disconnected, second pin of first pin of the first switch Q1 and the first switch Q1 is communicated with, the 5th pin of the first switch Q1 and the first switch Q1 the 6th pin disconnect, the 5th pin of the 4th pin of the first switch Q1 and the first switch Q1 is communicated with, because first pin of the first switch Q1 and first pin of the 3rd relay K 3 link to each other, second pin of the first switch Q1 the 4th pin and the 3rd relay K 3 links to each other, so between second pin of first pin of the 3rd relay K 3 and the 3rd relay K 3, have 12V pressure reduction, the closing of contact of the 3rd relay K 3, the 4th pin closure of the three-prong of the 3rd relay K 3 and the 3rd relay K 3, the charger circuit communication, charger is connected with battery terminal negative by charger the 3rd port, the charger five-port is connected with battery positive voltage by the 3rd relay K 3, the three-prong of the first switch Q1 and second pin of first relay K 1 link to each other at this moment, the 1st pin of the first switch Q1 the 6th pin and first relay K 1 links to each other, so no 12V pressure reduction between second pin of first pin of first relay K 1 and first relay K 1, the contact of first relay K 1 disconnects, the 4th pin of the three-prong of first relay K 1 and first relay K 1 disconnects, battery tension does not pass through first relay K, 1 output voltage to the diode array circuit, because silicon rectification generator voltage exists and the positive pole of storage battery links to each other with first pin of second relay K 2, the negative pole of storage battery links to each other with second pin of second relay K 2, so the pin three of second relay K 2 and pin four conductings, behind the silicon rectification generator voltage process diode array circuit, supply power voltage is sent into inverter conversion, and then power for load (mobile unit) by second switch Q2 the 5th pin and second switch Q2 second pin, second pin of second switch Q2 and first pin of charger link to each other, the 5th pin of second switch Q2 and second pin of charger link to each other, and power to charger.
When (2), not existing as if silicon rectification generator output
When if silicon rectification generator output does not exist, storage battery becomes power supply unique in the system, so having only storage battery powers to onboard system, this moment, the first switch Q1 can only be in power supply state, the three-prong of the first switch Q1 is connected with the first switch Q1, second pin, second pin of first pin of the first switch Q1 and the first switch Q1 disconnects, the 5th pin of the first switch Q1 is communicated with the first switch Q1 the 6th pin, the 5th pin of the 4th pin of the first switch Q1 and the first switch Q1 disconnects, because first pin of the first switch Q1 and first pin of the 3rd relay K 3 link to each other, second pin of the first switch Q1 the 4th pin and the 3rd relay K 3 links to each other, so between second pin of first pin of the 3rd relay K 3 and the 3rd relay K 3, do not have 12V pressure reduction, the 4th pin of the three-prong of the 3rd relay K 3 and the 3rd relay K 3 disconnects, the charger loop is not communicated with, charger is not exported charging signals to the storage battery two ends, the three-prong of the first switch Q1 and second pin of first relay K 1 link to each other at this moment, the 1st pin of the first switch Q1 the 6th pin and first relay K 1 links to each other, so between second pin of first pin of first relay K 1 and first relay K 1, have 12V pressure reduction, the closing of contact of first relay K 1, the 4th pipe of the three-prong of first relay K 1 and first relay K 1 is communicated with, battery tension passes through first relay K, 1 output voltage to the diode array circuit, and then gives load (mobile unit) power supply by second switch Q2 the 5th pin and second switch Q2 the 5th pin.
Two, electric weight detects indicating circuit
Circuit as shown in Figure 3, comprise first resistance R 1, second resistance R 2, the 3rd resistance R 3, voltage reference circuit, the 3rd comparator N11, the first diode VD1, the second diode VD2, the 3rd diode VD3, the first triode N3, battery charger, series connection first resistance R 1 between described storage battery interface two pins, second resistance R 2, the 4th pin of first resistance R 1 and second resistance R, 2 links and the 3rd comparator N11, the 6th pin of the 3rd comparator N11, the 8th pin concurrent of the 3rd comparator N11 connects, the 5th pin of second switch Q2, second pin of second switch Q2 and voltage reference circuit first port, the voltage reference circuit five-port connects, voltage reference circuit first port, voltage reference circuit second port, voltage reference circuit the 3rd port respectively with the 5th pin of the 3rd comparator N11, the 7th pin of the 3rd comparator N11, the 9th pin of the 3rd comparator N11 connects, first pin of the 3rd comparator N11, second pin of the 3rd comparator N11, the 14 pin of the 3rd comparator N11 respectively with the first diode VD1 anode, the second diode VD2 anode, the 3rd diode VD3 anode connects, the first triode N3 collector electrode is connected with first pin of the 3rd comparator N11, the first triode N3 base stage is connected with battery charger the 3rd port by the 3rd resistance R 3, the emitter of the first triode N3, the first diode VD1 negative electrode, the second diode VD2 negative electrode, the 3rd diode VD3 negative electrode is connected with battery charger second port (for ground) jointly, charger the 4th port is connected with battery charger first port, and the 3rd relay K 3 first pins are connected with battery charger.Electric weight detects indicating circuit accumulator electric-quantity measuring ability and charge function is organically combined; protected the safety in the storage battery use effectively; make vehicle mounted accumulator cell charging and discharging more flexible; because there are certain corresponding relation in the electric weight of lead acid accumulator and the terminal voltage of storage battery; therefore can judge the electric weight of storage battery by the terminal voltage that detects the storage battery two ends; physical circuit as described in Figure 3
The explanation of each port of voltage reference circuit: the 4th port of voltage reference circuit links to each other with the 5th pin of second switch Q2, the five-port of voltage reference circuit links to each other with second pin of second switch Q2, second switch Q2 the 5th pin and second switch Q2 second pin provide the AC-input voltage of 220V to voltage reference, it is optimum value that the alternating voltage of 220V is exported the first voltage reference Vref1(3.92V through voltage reference circuit conversion back at first port of voltage reference circuit, the corresponding battery tension of this voltage reference is 11.8V, the variable range of Vref1 is 3.84V≤Vref1≤3.92V, when 3.84V≤Vref1≤3.92V, corresponding battery tension be the 5th pin of 11.2V≤VBAT≤11.8V) to the 3rd comparator N11, exporting the second voltage reference Vref2(3.78V at second port of voltage reference circuit is optimum value, the corresponding battery tension of this voltage reference is 10.8V, the variable range of Vref1 is 3.70V≤Vref1≤3.78V, when 3.70V≤Vref1≤3.78V, corresponding battery tension be the 7th pin of 10.4V≤VBAT≤10.8V) to the 3rd comparator N11, the corresponding battery tension of the 3rd port output tertiary voltage benchmark this voltage reference of Vref3(3.66V at voltage reference circuit is 10.1V, the variable range of Vref1 is 3.60V≤Vref1≤3.66V, when 3.60V≤Vref1≤3.66V, corresponding battery tension be 9.6V≤VBAT≤, be the 3rd comparator N11 first pin 10.1V) to the 9th pin of the 3rd comparator N11, the 3rd comparator N11 second pin, the 3rd comparator N11 three-prong provides reference voltage.
The course of work:
Storage battery output two ends are through two divider resistances, voltage division signal are outputed to the 4th pin, the 6th pin, the 8th pin of the 3rd comparator N11, as the reference voltage of the 3rd comparator N11.Second switch Q2 output 220V alternating current is after the voltage reference circuit conversion, and the 3rd port of first port by voltage reference circuit, second port of voltage reference circuit, voltage reference circuit is exported 3 comparative voltages respectively and compared with the reference voltage that the 3rd comparator N11 imports.
When storage battery is in power supply state, charger the 4th port (sending the charging index signal) and the output of the 3rd relay K 3 first pins (sending the 12V voltage signal) no signal, this moment is when managing V1 first threshold (threshold value is 11.8V) when battery tension greater than PMOS, the 3rd comparator N11 first pin, the 3rd comparator N11 second pin, the 3rd comparator N11 the 14 pin output high level, the first diode VD1, the second diode VD2, the 3rd diode VD3 is green normal bright state, show that storage battery is in Full Charge Capacity, when battery tension is higher than PMOS to manage the second threshold value V2(threshold value be 11.4V) to be lower than PMOS pipe first threshold V1(threshold value be 11.8V) time, the 3rd comparator N11 first pin output low level, the 3rd comparator N11 second pin, the 3rd comparator N11 the 14 pin output high level.The first diode VD1, the second diode VD2 is in green normal bright state, the 3rd diode VD3 is in and extinguishes state, inform that storage battery is in middle state of charge, managing the 3rd threshold value V3(threshold value when battery tension greater than PMOS is 10.4V) being lower than PMOS, to manage the second threshold value V2(threshold value be 11.4V) time the 3rd comparator N11 first pin, the 3rd comparator N11 second pin output low level, the 3rd comparator N11 the 14 pin output high level, the first diode VD1 is in normal bright state, the second diode VD2 and the 3rd diode VD3 are in and extinguish state and inform that storage battery is in the power shortage state, and need charge a battery this moment.
When charge in batteries, the 3rd relay K 3 first pins output battery tension circuit supply that charges the battery, and charger the 4th pin output accumulator electric-quantity charging index signal detects indicating circuit to electric weight, work as charge in batteries imperfect tense this moment, charger the 4th port output low level signal (the control electric weight detects indicating circuit output square-wave signal), electric weight detects indicating circuit output square-wave signal and gives the first triode N3 simultaneously, wherein R3 is a current-limiting resistance, the first triode N3 is in conducting repeatedly and cut-off state, this moment the first diode VD1, the second diode VD2, the 3rd diode VD3 flicker shows that storage battery is in the charging.When charge in batteries finished, charger the 4th port output high level signal detected indicating circuit to electric weight, and this moment, electric weight detected indicating circuit output low level signal to the first triode N3 base stage.The triode first triode N3 ends, and the first diode VD1, the second diode VD2, the 3rd diode VD3 are green normal bright state, shows that charge in batteries finishes.
Three, current foldback circuit
Concrete overcurrent protection principle as shown in Figure 4; current foldback circuit comprises Hall current sensor; the 4th relay K 4; the 5th relay K 5; the first comparator N5; the first voltage chip N6; the second triode N4; the 4th diode VD4; loud speaker; quiet reset circuit; described diode array circuit output end respectively with the Hall current sensor input; the first voltage chip N6 three-prong connects; second pin of the first voltage chip N6; first pin of the first voltage chip N6 respectively with second pin of the first comparator N5; the 4th pin of the first comparator N5 connects; the first comparator N5 three-prong is connected with the second triode N4 base stage by the 4th resistance R 4; 3 outputs of Hall current sensor respectively with the three-prong of the 5th relay K 5; the 7th pin of the 4th relay K 4; the 6th pin of the 4th relay K 4 connects; first pin of the 5th relay K 5 is connected with the tenth pin of the 4th relay K 4; the 4th pin of the 5th relay K 5 is connected with first pin of inverter; the 12 pin and the loud speaker of the 4th relay K 4; the anode of the 4th diode VD4 connects, the emitter of the second triode N4; the negative electrode of VD4 is connected with the 4th pin of the first comparator N5.
The course of work: after direct current is flowed through the diode array circuit; between output of diode array circuit and inverter, carried out the over-current detection safeguard measure; after direct current is flowed through the diode array circuit; survey the size of direct current by series connection Hall current sensor on the direct current transmission lead; the resolution of Hall current sensor is for inducing the induced current of 1mA on the output loop of Hall current sensor when the electric current in the lead of flowing through is 1A; resistance by 100 Europe of connecting at the output loop of Hall current sensor; just can be converted to induced voltage to induced current handles; promptly when being 1A, the electric current of current circuit just on the inductive reactance in output loop 100 Europe of Hall current sensor, induces the voltage of 0.1V; three-prong and the first comparator N5 the 4th pin that this induced voltage is delivered to the first comparator N5 handled then; the first voltage chip N6, second pin (level reference signal); the signal that first voltage chip N6 first pin (earth signal) is delivered to the first comparator N5, second pin compares; when the diode array circuit surpasses current design sill value (50A) by Hall current sensor current in loop between inverter; the first comparator N5, first pin output high level signal; it is under the conventional state of 0(that this signal makes the 4th relay K 4 first pin contact level; the 4th relay K 4 the 7th pin and the 4th relay K 4 the tenth pin are in normal open state); make the 4th relay K 4 the 7th pin be communicated with after the 4 moving contact reed redirects of the 4th relay K with the 4th relay K 4 the 12 pin; this moment, the level of the 4th relay K 4 the 12 pin was 12V; connect overcurrent output alarm loud speaker; the loud speaker warning that pipes this moment; the 4th diode VD4 brightens simultaneously, and (simultaneously quiet reset circuit is alarmed; the notice user maintenance; reset quiet reset circuit this moment; can stop to report to the police) at this moment; reed disconnects and to make the disconnection of the 4th relay K 4 the 7th pin and the 4th relay K 4 the tenth pin contact; the level signal that the 4th relay K 4 the tenth pin gets an electric shock is 0V by the 12V saltus step; because the 4th relay K 4 the tenth pin contact is connected with the input control contact 1 of solid-state relay K5, this moment, the K5 first pin contact voltage was that 0V solid-state relay K5 output disconnects by the 12V saltus step.Thereby cut off the diode array circuit to the current circuit between the inverter, reached the purpose of overcurrent protection.
Four, battery charger
Circuit as shown in Figure 5, comprise the 4th resistance R 10, the 5th resistance R 11, the 6th resistance R 12, the 7th resistance R 13, the second voltage chip N8(SPX1117M-5.0), the second comparator N9, PMOS manages V1, trigger N12, described the 3rd relay K 3 first pins are connected with the second voltage chip N8 three-prong, the second voltage chip N8, first pin is connected with the second comparator N9, second pin by the 4th resistance R 10, the second voltage chip N8, second pin is connected with the second comparator N9, second pin by the 5th resistance R 11, the second voltage chip N8, second pin is connected with the second comparator N9, first pin by the 6th resistance R 12, PMOS pipe V1 grid is connected with the second comparator N9, first pin, PMOS pipe V1 source class is connected with the second voltage chip N8, second pin, PMOS pipe V1 drain electrode is connected with trigger N12 the 14 pin, the 7th resistance R 13 of connecting between trigger N12 first pin and trigger N12 second pin, series capacitance C between trigger N12 first pin and trigger N12 the 7th pin, trigger N12 second pin is connected with the 3rd resistance R 3.
The course of work: when the storage battery unsaturation and when being in charged state, charger the 4th port send low level signal to the second comparator N9 three-prong, the 3rd relay K 3 first pins send the 12V voltage signal to second voltage chip N8 (SPX1117M-5.0) three-prong simultaneously, the second voltage chip N8, the second pin output+5V level signal, this signal divides three the tunnel, one the tunnel through delivering to the second comparator N9, second pin after R11 and the 6th resistance R 12 dividing potential drops, one the tunnel delivers on the 6th resistance R 12, and one the tunnel delivers to the S end of PMOS pipe V1.
When charge in batteries, charger the 4th port send low level signal to the second comparator N9 three-prong, and this moment, the second comparator N9 output low level signal was held to the G of PMOS pipe V1, and this moment, PMOS managed the V of V1
GS=-5V meets the turn-on condition of PMOS pipe, and PMOS manages conducting.At this moment, the second voltage chip N8 output+5V signal is given this schmitt trigger N12 power supply by 14 pin that PMOS pipe V1 delivers to trigger N12, because at trigger N12(Si schmitt trigger) capacitor C that to be in series with a capacity between first pin and trigger N12 the 7th pin be 100UF, the 7th resistance R 13(of a 25K of series connection passes through to select different resistance and electric capacity between trigger N12 first pin and trigger N12 second pin simultaneously, obtain the square wave of other frequencies according to formula f=0.8RC, send among the divider resistance R3), so f=0.8RC calculates f=2HZ according to formula, this moment, trigger N12 exported the 2HZ square-wave signal to R3 as a square-wave generator at second pin of trigger N12, make the triode N3 that wins be in connection, disconnect two states repeatedly, make the diode VD1 that wins, the second diode VD2, the 3rd diode VD3 flicker shows that charge a battery this moment again.
When charge in batteries is finished, charger the 4th port send high level signal to the second comparator N9 three-prong, second comparator N9 output this moment high level signal is to the G end of PMOS pipe V1, and PMOS pipe V1 ends, and low level signal of the 3rd comparator N11 output this moment is given R3.
Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Claims (5)
1. vehicle power control device, comprise storage battery, silicon rectification generator, inverter, commercial power interface, charger, fuse, filter, charger, it is characterized in that also comprising that power supply selection circuit, electric weight detect indicating circuit, current foldback circuit, wherein power supply selects circuit to comprise the first switch Q1, second switch Q2, first relay K 1, second relay K 2, the 3rd relay K 3, diode array circuit; Described storage battery two ends are connected with electric weight detection indicating circuit two ends respectively, battery positive voltage is connected with the first switch Q1, second pin, first relay K, 1 three-prong, second relay K, 2 first pins, the 3rd relay K 3 the 4th pin respectively; Battery terminal negative is connected with the first switch Q1 the 5th pin, silicon rectification generator negative pole, charger the 3rd port respectively; The first switch Q1, first pin, the first switch Q1 the 4th pin are connected with the 3rd relay K 3 first pins, the 3rd relay K 3 second pins respectively; The first switch Q1 three-prong, the first switch Q1 the 6th pin are connected with first relay K, 1 second pin, first relay K, 1 first pin respectively; Input port of first relay K 1 the 4th pin and diode array circuit is connected; First relay K, 1 three-prong is connected with battery positive voltage; Second relay K 2 the 4th pin is connected with another input pin of diode array circuit; Second relay K, 2 second pins, second relay K, 2 three-prongs are connected with silicon rectification generator negative pole, silicon rectification generator positive pole respectively; The silicon rectification generator negative pole is connected with inverter port, a battery terminal negative respectively; Diode array circuit output end mouth is connected by another port of current foldback circuit and inverter; Two output ports of inverter are connected with second switch Q2 first pin, second switch Q2 three-prong; Commercial power interface one end passes through to be connected with second switch Q2 the 4th pin behind fuse, the filter; The commercial power interface other end is connected with second switch Q2 the 6th pin; Second switch Q2 second pin is first output pin, and second switch Q2 the 5th pin is second output pin.
2. a kind of vehicle power control device according to claim 1, it is characterized in that described diode array circuit comprises the first diode circuit in parallel, the second diode circuit in parallel, the described first diode circuit in parallel, the second diode circuit in parallel comprises n or n+1 diode parallel connection respectively, the described first parallel diode circuit negative electrode, the first parallel diode circuit negative electrode is connected with inverter respectively, the described first parallel diode circuit anode is connected with first relay K 1 the 4th pin, and the described second diode circuit anode in parallel is connected with second relay K 2 the 4th pin.
3. a kind of vehicle power control device according to claim 1, it is characterized in that described electric weight detects indicating circuit and comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, voltage reference circuit, the 3rd comparator N11, the first diode VD1, the second diode VD2, the 3rd diode VD3, the first triode N3, battery charger, series connection first resistance R 1 between described storage battery interface two pins, second resistance R 2, first resistance R 1 and second resistance R, 2 links and the 3rd comparator N11 the 4th pin, the 3rd comparator N11 the 6th pin, the 3rd comparator N11 the 8th pin concurrent connects, second switch Q2 the 5th pin, second switch Q2 second pin and voltage reference circuit the 4th port, the voltage reference circuit five-port connects, voltage reference circuit first port, voltage reference circuit second port, voltage reference circuit the 3rd port respectively with the 3rd comparator N11 the 5th pin, the 3rd comparator N11 the 7th pin, the 3rd comparator N11 the 9th pin connects, the 3rd comparator N11 first pin, the 3rd comparator N11 second pin, the 3rd comparator N11 the 14 pin respectively with the first diode VD1 anode, the second diode VD2 anode, the 3rd diode VD3 anode connects, the first triode N3 collector electrode is connected with the 3rd comparator N11 first pin, the first triode N3 base stage is connected with battery charger the 3rd port by the 3rd resistance R 3, the first triode N3 emitter, the first diode VD1 negative electrode, the second diode VD2 negative electrode, the 3rd diode VD3 negative electrode is connected with battery charger second port jointly, charger the 4th port is connected with battery charger first port, and the 3rd relay K 3 first pins are connected with battery charger.
4. a kind of vehicle power control device according to claim 3, it is characterized in that described battery charger comprises the 4th resistance R 10, the 5th resistance R 11, the 6th resistance R 12, the 7th resistance R 13, the second voltage chip N8, the second comparator N9, PMOS manages V1, trigger N12, described the 3rd relay K 3 first pins are connected with the second voltage chip N8 three-prong, the second voltage chip N8, first pin is connected with the second comparator N9, second pin by the 4th resistance R 10, the second voltage chip N8, second pin is connected with the second comparator N9, second pin by the 5th resistance R 11, the second voltage chip N8, second pin is connected with the second comparator N9, second pin by the 6th resistance R 12, the second comparator N9 three-prong is connected with charger the 4th port, PMOS pipe V1 grid is connected with the second comparator N9, first pin, PMOS pipe V1 source class is connected with the second voltage chip N8, second pin, PMOS pipe V1 drain electrode is connected with trigger N12 the 14 pin, the 7th resistance R 13 of connecting between trigger N12 first pin and trigger N12 second pin, series capacitance C between trigger N12 first pin and trigger N12 the 7th pin, trigger N12 second pin is connected with the 3rd resistance R 3.
5. a kind of vehicle power control device according to claim 1; it is characterized in that described current foldback circuit comprises Hall current sensor; the 4th relay K 4; the 5th relay K 5; the first comparator N5; the first voltage chip N6; the second triode N4; the 4th diode VD4; loud speaker; quiet reset circuit; described diode array circuit output end respectively with the Hall current sensor input; the first voltage chip N6 three-prong connects; the first voltage chip N6, second pin; the first voltage chip N6, first pin respectively with the first comparator N5, second pin; the first comparator N5 the 4th pin connects; the first comparator N5 three-prong is connected with the second triode N4 base stage by the 4th resistance R 4; 3 outputs of Hall current sensor respectively with the 5th relay K 5 three-prongs; the 4th relay K 4 the 7th pin; the 4th relay K 4 the 6th pin connects; the 5th relay K 5 first pins are connected with the 4th relay K 4 the tenth pin; the 5th relay K 5 the 4th pin is connected with first pin of inverter; the 4th relay K 4 the 12 pin and loud speaker; the 4th diode VD4 anode connects, the second triode N4 emitter; the 4th diode VD4 negative electrode is connected with the first comparator N5 the 4th pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120178648 CN202084962U (en) | 2011-05-31 | 2011-05-31 | Vehicle-mounted power supply control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120178648 CN202084962U (en) | 2011-05-31 | 2011-05-31 | Vehicle-mounted power supply control device |
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| CN202084962U true CN202084962U (en) | 2011-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957146A (en) * | 2012-11-23 | 2013-03-06 | 广东易事特电源股份有限公司 | Industrial undisturbed power supply system and control method and device thereof |
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2011
- 2011-05-31 CN CN 201120178648 patent/CN202084962U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957146A (en) * | 2012-11-23 | 2013-03-06 | 广东易事特电源股份有限公司 | Industrial undisturbed power supply system and control method and device thereof |
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