CN2457780Y - Hand-held multifunction power source - Google Patents
Hand-held multifunction power source Download PDFInfo
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- CN2457780Y CN2457780Y CN 00249675 CN00249675U CN2457780Y CN 2457780 Y CN2457780 Y CN 2457780Y CN 00249675 CN00249675 CN 00249675 CN 00249675 U CN00249675 U CN 00249675U CN 2457780 Y CN2457780 Y CN 2457780Y
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Abstract
The utility model relates to a hand-held multifunction power source, which comprises a power source shell, and a lamp cover which is integrally connected with the shell. A 12V accumulator and a DC/AC converter are arranged in the shell; a socket is arranged on the lamp cover; an illuminating lamp is arranged on the socket. The hand-held multifunction power source is characterized in that the DC/AC converter is provided with a control unit and also comprises a charging control circuit which comprises a charger, an automatic charging control circuit, a protective circuit and a function indication circuit. The hand-held multifunction power source can stably output 12V direct current and 110V/220V alternating current, and not only can provide illumination but also can provide other loads regardless of in rooms, fields or cars, and ships. The utility model is an ideal and practical multifunction power source.
Description
The utility model relates to power supply, particularly a kind of portable multifunctional power supply.
Existing DC power supply adopts storage battery (storage battery), DC/AC transducer mostly, and the lighting of use or other load are separate type, causes that parts are many, volume is big, wiring is numerous and diverse, use is inconvenient.
The purpose of this utility model is in order to overcome the shortcoming of above-mentioned prior art; and a kind of storage battery, DC/AC transducer, lighting, charging control automatically, low pressure overload protection and function indication etc. being integrated in one of providing; guarantee to use the 12V accumulator DC can be converted to alternating current, and be AC load use, and small and exquisite, the portable portable multifunctional power supply of volume.
The purpose of this utility model is achieved in that the portable multifunctional power supply, comprises power shell, and the lampshade that is connected with the housing one is provided with the 12V storage battery in the housing, the DC/AC transducer, and lampshade is provided with socket, and socket is provided with lighting; Be characterized in the DC/AC transducer that described DC/AC transducer is a tape control unit; Also comprise a charging control circuit, this control circuit comprises a charger, one automatic charging control circuit, a protective circuit and function indicating circuit, described automatic charging control circuit comprise that one compares amplifying circuit, a reference voltage circuit, one drive circuit, a charging executive circuit; Described protective circuit comprises an overload protecting circuit and a contrary protective circuit that connects; Described function indicating circuit comprises electric weight indication and charging indication;
The output of 12V battery tension is connected with the comparison amplifying circuit, and the reference voltage of reference voltage circuit also is connected with the comparison amplifying circuit simultaneously simultaneously; Relatively the output signal of amplifying circuit is connected with drive circuit, its output is connected with the charging executive circuit, charging executive circuit actuating signal is connected with the 12V storage battery, and the 12V battery tension converts the 110V/220V alternating current to through the DC/AC transducer and outputs to charger or use power supply as AC load; The electric energy of this charger is delivered to comparison amplifying circuit and charging executive circuit simultaneously; The output of comparison amplifying circuit is also delivered to indicating circuit simultaneously and is carried out electric weight and charging indication; The output of 12V storage battery also is connected with overload protecting circuit with contrary indicating circuit taking alarm respectively.
Above-mentioned portable multifunctional power supply, wherein, described executive circuit is made of a relay J Z, and the two ends of its normally opened contact also meet a dropping resistor R14, and the arm of deciding of normally opened contact is connected in series a diode D2; Relay J Z coil also meets a diode D4.
Above-mentioned portable multifunctional power supply, wherein, described drive circuit is made of a transistor N1, and the collector electrode of N1 is connected with the tie point of relay J Z coil with diode D4.
Above-mentioned portable multifunctional power supply, wherein, described relatively amplifying circuit is made of an operational amplifier ICA, and output connects the biasing resistor of two serial connections, and the resistance mid point of these two biasings is connected with the base stage of drive circuit transistor N1.
Above-mentioned portable multifunctional power supply, wherein, described reference voltage reaches a potentiometer that is connected with its collector electrode by a transistor N2 and constitutes, and generation one reference voltage and 12V battery tension compare.
Above-mentioned portable multifunctional power supply, wherein, the control unit of described DC/AC transducer comprises prime control unit and back level control unit;
Described prime control unit comprises an overcurrent comparison circuit, under-voltage comparison circuit, temperature comparison circuit, overvoltage crowbar, shutoff restore circuit, frequency modulation circuit, the wide modulation circuit of ripple and drive circuit A and drive circuit B; Current signal is input to the overcurrent comparison circuit, power supply voltage signal is input to overvoltage crowbar and under-voltage comparison circuit respectively, exports a signal respectively to the wide modulation circuit of ripple from overcurrent comparison circuit, under-voltage comparison circuit, overvoltage crowbar and frequency modulation circuit; Temperature signal outputs to under-voltage comparison circuit through temperature comparison circuit, under-voltage comparison circuit with turn-off that restore circuit is two-way to be connected, under-voltage comparison circuit is exported an alarm signal to alarm simultaneously;
Described back level control unit comprises a voltage stabilizing feedback circuit, the wide modulation circuit of ripple, frequency modulation circuit and drive circuit C, drive circuit D; Frequency modulation circuit produces an operating frequency to the wide modulation circuit of ripple, and the wide modulation circuit output of ripple two paths of signals is to drive circuit C and drive circuit D; The output of drive circuit C and drive circuit D drives back level oscillating circuit respectively, it is exported one respectively and feeds back signal to the voltage stabilizing feedback circuit simultaneously, this voltage stabilizing feedback circuit outputs to the wide modulation circuit of ripple, after modulating together, the signal that the wide modulation circuit of ripple is exported the Xinjiang and the frequency modulation circuit of the output of voltage stabilizing feedback circuit outputs to drive circuit C and drive circuit D more respectively, so circulation.
Above-mentioned portable multifunctional power supply wherein, is provided with one and can presss from both sides the harness clip of hanging storage battery on the described cover plate, this accumulator line clip is by constituting with storage battery wire connecting and clip.
Because the utility model has adopted above technical pattern; be provided with control unit at the DC/AC transducer; add and be provided with automatic charge control system, over-charge protective function, overload/low-voltage variation, function indication etc.; therefore; the utility model can be stable output 12V direct current and 110V/220V alternating current, no matter in indoor, wilderness, or automobile, ship; not only can throw light on but also can use other load, be an ideal and practical multifunctional power.
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a surface structure schematic diagram of the present utility model.
Fig. 2 is the electrical block diagram of the utility model control circuit.
Fig. 3 is the electrical block diagram of DC/AC converter circuit in the utility model control circuit.
Fig. 4 is the functional block diagram of the prime control unit of DC/AC converter circuit in the utility model control circuit.
Fig. 5 is the functional block diagram of the back level control unit of DC/AC converter circuit in the utility model control circuit.
Fig. 6 is the electrical schematic diagram figure of DC/AC converter circuit in the utility model control circuit.
Fig. 7 is the electrical schematic diagram of charging circuit in the utility model control circuit, protective circuit and function display circuit.
Fig. 8 is the surface structure schematic diagram that the utility model installs binding clip in an embodiment additional.
See also accompanying drawing 1.The utility model portable multifunctional power supply comprises power shell 1, and housing 1 comprises protecgulum 11 and bonnet 12.The lampshade 2 that is connected with the housing one, lampshade is provided with socket, and socket is provided with lighting 4; Housing is provided with the hole 51 that amplifies, vent 52, charging indicator light 53, contrary indicator light 54, charging process indicator light 55, the sufficient indicator light 56 of electric weight, the demonstration electric weight button 57 of connecing; Be provided with the 12V storage battery in the housing, the 12V accumulator DC can be converted to the DC/AC transducer of 110V/220V alternating current, also comprise a control circuit, this control circuit comprises a charger, one automatic charging control circuit, a protective circuit and function indicating circuit; Automatic charging control circuit compares amplifying circuit, a reference voltage circuit, one drive circuit, actuator charging executive circuit by one; Protective circuit comprises an overload protecting circuit and a contrary protective circuit that connects; The function indicating circuit comprises electric weight indication and charging indication.
The 12V dc power supply is supplied with by storage battery, and lighting 4 is daylight doubles, directly uses the 12V direct current; The DC/AC transducer converts the 12V direct current of storage battery to the 110V/220V alternating current, and one provides charger, uses for AC load besides.
When in the storage battery during power shortage, functional indicator light is bright, can utilize the 110V/220V alternating current that the 12V direct current is implemented charging, finishes the charging overall process by automatic charge control system.
Fig. 2 is the electrical block diagram of the utility model control circuit; This control circuit comprises a charger, and an automatic charging control circuit, a protective circuit and function indicating circuit, described automatic charging control circuit comprise that one compares amplifying circuit, a reference voltage circuit, one drive circuit, a charging executive circuit; Described protective circuit comprises an overload protecting circuit and a contrary protective circuit that connects; Described function indicating circuit comprises electric weight indication and charging indication;
The output of 12V battery tension is connected with amplifying circuit relatively, and the benchmark of reference voltage circuit is specially pressed also simultaneously and compared amplifying circuit and be connected simultaneously; Relatively the output signal of amplifying circuit is connected with drive circuit, its output is connected with the charging executive circuit, charging executive circuit actuating signal is connected with the 12V storage battery, and the 12V battery tension converts the 110V/220V alternating current to through the DC/AC transducer and outputs to charger or use power supply as AC load; The electric energy of this charger is delivered to comparison amplifying circuit and charging executive circuit simultaneously; The output of comparison amplifying circuit is also delivered to indicating circuit simultaneously and is carried out electric weight and charging indication; The output of 12V storage battery also is connected with overload protecting circuit with contrary indicating circuit taking alarm respectively.
At first when accumulator electric-quantity is not enough, the sample line of drawing from the 12V storage battery, battery tension and reference voltage are compared at the comparison amplifying unit, when if the battery tension value is lower than set point S, the electric weight charging indicator light is bright, do not need charging, direct current interchange converting unit also automatically shuts down because of brownout simultaneously, stop to power to the load, at this moment the AC110V/220V AC power is inserted the charging executive circuit by charger, send into the comparison amplifying unit and battery tension compares from charging executive circuit front-end sampling voltage simultaneously, when battery tension is lower than the charging voltage certain numerical value, send a level signal to driver element from comparing amplifying unit, make the action of charging executive circuit, the charging circuit conducting is so begin charging, along with the carrying out of charging process, battery tension also constantly rises.When its value rose to the limit value that we set, its sampling voltage and charging sampling voltage were after comparison, and upset appears in the storage battery that comes out from amplifying unit relatively, so drive circuit quits work, the charging executive circuit disconnects, and charging is finished.
If secondly battery tension is in the normal working voltage scope, its sampling voltage acts on comparison amplifier, produces one and makes the out-of-work level of drive circuit, and whole charging circuit is not worked, and storage battery can power to the load by transducer.
Fig. 3 is the electrical block diagram of the utility model DC/AC transducer; Described DC/AC transducer comprises: a DC/AC translation circuit and an output filter circuit that the DC/DC translation circuit that an input filter circuit, is made of prime oscillating circuit and prime control unit and primary, is made of back level oscillating circuit and back level control unit; Described working power comprises two groups by transformer two DC power supply forming of twice levels and two rectification circuits in addition, offers back level oscillating circuit and back grade control unit respectively.Comprise that also one contrary connects protective circuit, be connected input filter circuit before.
Fig. 4 is the functional block diagram of the prime control unit DR1 of the utility model DC/AC converter circuit.This prime control unit comprise an overcurrent comparison circuit, under-voltage comparison circuit, temperature comparison circuit, overvoltage crowbar, shutoff restore circuit, frequency modulation circuit, the wide modulation circuit of ripple and; Current signal is input to the overcurrent comparison circuit, power supply voltage signal is input to overvoltage crowbar and under-voltage comparison circuit respectively, exports a signal respectively to the wide modulation circuit of ripple from overcurrent comparison circuit, under-voltage comparison circuit, overvoltage crowbar and frequency modulation circuit; Temperature signal outputs to under-voltage comparison circuit through temperature comparison circuit, under-voltage comparison circuit with turn-off that restore circuit is two-way to be connected, under-voltage comparison circuit is exported an alarm signal to alarm simultaneously; The wide modulation circuit of ripple output two paths of signals branch is clipped to drive circuit A and drive circuit B, and power signal outputs to drive circuit B by power control circuit simultaneously, and drive circuit A and drive circuit B output to the prime oscillating circuit.
Fig. 5 is the functional block diagram of the back level control unit DR2 of the utility model DC/AC converter circuit.Back level control unit groundwork principle and prime control unit are basic identical, just only take out the AC output voltage as feedback voltage in this unit from the full-bridge oscillating circuit, feed back the control that realizes output voltage stabilization by this.Described back level control unit comprises a voltage stabilizing feedback circuit, the wide modulation circuit of ripple, frequency modulation circuit and drive circuit C, drive circuit D; Frequency modulation circuit produces an operating frequency to the wide modulation circuit of ripple, and the wide modulation circuit output of ripple two paths of signals is to drive circuit C and drive circuit D; The output of drive circuit C and drive circuit D drives back level oscillating circuit respectively, it is exported one respectively and feeds back signal to the voltage stabilizing feedback circuit simultaneously, this voltage stabilizing feedback circuit outputs to the wide modulation circuit of ripple, after modulating together, the signal that the wide modulation circuit of ripple is exported the Xinjiang and the frequency modulation circuit of the output of voltage stabilizing feedback circuit outputs to drive circuit C and drive circuit D more respectively, so circulation.
Fig. 6 is the electrical schematic diagram of DC/AC converter circuit in the utility model control circuit; See also:
Power supply prime filter circuit is a filter capacitor E1, and its effect is to carrying out smothing filtering from 12V automobile power source or spike disturbing pulse, for the DC-DC transducer provides quality direct current preferably.The first prevents to import power supply and scurries into noise, and it two is to suppress the noise that Switching Power Supply produces to feed back to the input power supply.
Field effect transistor transistor Q11 and Q21 are subjected to the drive signal control of sending here from the prime control unit and make to replace break-make and work.(power M0SFET field effect transistor is an one pole type device, is by the majority carrier conduction current, does not have charge carrier to accumulate and time of delay of producing, and switching speed is fast, and switching time is short.) bearing power is provided all for the transformer secondary output lateral coil during arbitrary transistor turns, when two transistors all end, play afterflow effect in short-term by capacitor C2, simultaneously, C2 mainly plays the effect of receiving to noise voltage in the circuit.When exporting high level signal from prime control unit 13 pin, and Q11 enters conducting and Q21 ends during 12 pin output low levels, electric current is formed current circuit by anode through transformer centre cap, transformer top and field effect transistor Q11 and is flowed from bottom to top, and the transformer secondary output coil also produces from bottom to top an electric current like this.But from prime control unit 13 and 12 pin output pulse upset appears subsequently, i.e. 13 pin output low levels, and 12 pin become high level.This moment Q11 enter by and the Q21 conducting, electric current will flow out through the transformer centre cap from anode, through the main coil bottom and Q21 to form current circuit mobile from top to down.Also produced an electric current that flows from top to down at the transformer secondary output output equally.Just taken place once to change in transformer output end current direction like this, along with the alternately break-make of Q11, Q21, in the also alternately variation of electric current of transformation output, so just finished from direct current to the variation that exchanges one-period.Lotus root by the transformer secondary output coil is closed, and the current energy that has changed is continued to transmit backward.Wherein, first offers back level inversion oscillating circuit behind the rectifying and wave-filtering again by secondary coil T12; Second portion offers back level control unit behind the rectifying and wave-filtering again by secondary coil T13.
The quality that enters the drive signal waveform of grid will directly influence the output current quality of converter, and the break-make of field effect transistor is flowed into the control of its grid current.
Described prime control unit is made of an integration module, its model is 33KAL999, its 14 pin is connected with the centre cap of the variable potentiometer P1 of prime oscillating circuit, and 13 pin, 12 pin are connected with the grid of prime oscillating circuit Q11, field-effect transistor respectively that (model of Q11, Q21 field-effect transistor for example is: A-HUF7545P).Drive circuit A in the corresponding diagram 5 is to field-effect transistor Q11, and drive circuit B is to field-effect transistor Q21.The source electrode of Q11, Q21 field-effect transistor connects the two ends of the primary coil T11 of transformer T respectively.Because have certain relation between field effect transistor gate drive current and the output of leakage level, the variation of grid input current has also just been reacted in the variation of drain current.The grid current signal just is converted into a voltage signal that can compare like this.In the drawings; electric current leaks level output behind resistor R 1, P1, R3 from the prime field effect transistor; take a sample from the P1 point; be input to the prime control unit by Is port (14 pin) again; compare in the overcurrent comparing unit, if the drive current that enters grid is greater than setting thresholding, then the overcurrent comparator can provide a high level signal; force the wide adjuster of ripple to be tending towards off state, so realize the function of overcurrent protection.
The voltage signal of obtaining from power input enters the prime control unit from power port, be further divided into two-way, one the tunnel sends into overvoltage protector after sampling compares, if the supply voltage amplitude surpasses voltage limit value S, then voltage protection unit also can provide a high level signal in the wide modulating unit of ripple, forces the wide adjuster of ripple to turn-off; Another road is admitted to under-voltage comparing unit, when voltage is lower than set point S1, under-voltage comparing unit provides a high level signal to alarm, send the low pressure alarming signal, if input voltage continues to drop to when being lower than set point S2, the undervoltage warning unit also can provide a high level signal to the wide modulating unit of ripple, makes its shutoff.
When circuit is crossed low the shutoff because of input voltage, under-voltage comparing unit provides a level signal simultaneously, make and recover the starting unit circuit working, and after the restore circuit work, to make the benchmark of under-voltage comparing unit change, be input voltage must be higher than a certain set point S3 the time,, thereby enter operate as normal because the inner circuit that turn-offs could recover to start voluntarily.The general S3 value of setting is greater than the S1 value, the purpose of doing like this be for fear of circuit in the frequent break-make in shutoff voltage point place, play each components and parts effect of protective circuit.
When the circuit working temperature is too high, the thermistor Rct that is arranged in circuit will work, and its resistance raises with temperature and becomes greatly, react for the supply voltage sampling value to diminish.Select suitable thermistor, just temperature signal can be converted into voltage signal.Send into under-voltage comparing unit then.Just can realize overheat protector control according to foregoing reason.
Pulse modulation method not only can improve the waveform of output voltage, but also can regulate the output voltage effective value of inverter easily.Can utilize the pulse control circuit to finish, this circuit is the prior art of a maturation, can produce a string output amplitude and stablize and the adjustable pulse sequence of pulse duration.
The full-bridge type translation circuit that described back level oscillating circuit is made up of 4 switching transistor M1, M2, M3, M4.Replace break-make work from the direct current of prime input by M1, M3 and M2, M4 and finish direct current to the variation that exchanges, the same with the prime inverter circuit, its gate driver circuit by Dr2 after the level control module control (Dr2 has special narration thereafter).After filter capacitor C7 filtering, offer the AC load use from the alternating current of DC/AC output.
Described back level control unit is made of an integration module, and its model is: 983SINED, its 26 pin and field effect transistor M
4Grid connect 24 pin and field effect transistor M
1Grid connect 22 pin and field effect transistor M
2Grid connect 21 pin and field effect transistor M
3Grid connect; 25 pin and field effect transistor M
4Drain electrode and field effect transistor M
3Source electrode connect; 23 pin and field effect transistor M
1Drain electrode and field effect transistor M
2Source electrode connect; Field effect transistor M
1Drain electrode and field effect transistor M
4Source electrode power to AC load such as fans.Field effect transistor M
1, M
2, M
3, M
4Model for example be: A-HDF654PZ.The operation principle of back level control unit is: back level control unit comprises a voltage stabilizing feedback circuit, the wide modulation circuit of ripple, frequency modulation circuit and drive circuit C, drive circuit D; Frequency modulation circuit produces an operating frequency to the wide modulation circuit of ripple, and the wide modulation circuit output of ripple two paths of signals is to drive circuit C and drive circuit D; The output of drive circuit C and drive circuit D drives back level oscillating circuit respectively, it is exported one respectively and feeds back signal to the voltage stabilizing feedback circuit simultaneously, this voltage stabilizing feedback circuit outputs to the wide modulation circuit of ripple, after modulating together, the signal that the wide modulation circuit of ripple is exported the signal and the frequency modulation circuit of the output of voltage stabilizing feedback circuit outputs to drive circuit C and drive circuit D more respectively, so circulation.Described drive circuit C is to field effect pipe M
1, M
2, drive circuit D is to field effect pipe M
3, M
4Field effect transistor M
1, M
4 Source electrode output 110V/220V alternating current export after filtering preferably that alternating current provides AC load or charger.Charger is a prior art in the utility model, repeats no more.
Two groups of DC power supply i.e. the power supply of rectification and be respectively applied for back level vibration and the back level control unit work of providing from the power supply of transformer secondary output T13 rectifiable behind the transformer secondary output T12.The power supply of back level vibration output provides for example use of electrical equipment such as electric fan, illumination of all ac electric apparatus.
Fig. 7 is the circuit diagram of the utility model charging control circuit, protective circuit and function display circuit.Charging control circuit comprises executive circuit, drive circuit, reference circuit and comparison amplifying circuit.
Executive circuit is made of a relay J Z, and the model of relay J Z for example is: 97-1A-12D, and the two ends of its normally opened contact also meet a dropping resistor R14, and the arm of deciding of normally opened contact is connected in series a diode D2; Relay J Z coil also meets a diode D4.
Drive circuit is made of a transistor N1, and the collector electrode of N1 is connected with the tie point of relay J Z coil with diode D4.
Relatively amplifying circuit is made of an operational amplifier ICA, and output connects the biasing resistor of two serial connections, and the resistance mid point of these two biasings is connected with the base stage of drive circuit transistor N1.The model of operational amplifier ICA for example is LM324.
Reference voltage reaches a potentiometer that is connected with its collector electrode by a transistor N2 and constitutes, and generation one reference voltage and 12V battery tension compare.
The operation principle of this charging control circuit is: when the user found that battery tension is lower than 12V, K1 closed with charge switch, and battery tension and reference voltage are added to the input of comparison amplifier simultaneously.The setting reference voltage is 12V, if the battery tension value is lower than reference voltage, and the comparison circuit action, the output high level, drive circuit N1 conducting, relay coil gets electric, the normally opened contact adhesive, charger is to charge in batteries; Along with the carrying out of charging, battery tension rises, and the comparative voltage difference of comparison amplifier output is more and more littler, to certain degree the drive circuit transistor is ended for a short time, the relay coil dead electricity, and relay switch is opened, the charging end.
The electric weight display circuit is made of four light-emitting diodes that are connected with the 12V power supply, is connected in series the circuit that a dropping resistor or a dropping resistor are connected with operational amplifier before each light-emitting diode respectively, with rough demonstration battery tension height.Present embodiment is provided with four retainings, show by light-emitting diode L5, L3, L4, L6 respectively, wherein: L5 directly is connected with the 12v power supply by a dropping resistor R10, L3 is connected with operational amplifier ICB by behind the dropping resistor R19, L4 is connected with operational amplifier U2A by behind the dropping resistor R20, and L6 is connected with operational amplifier U2B by behind the dropping resistor R20.The model of operational amplifier ICB, U2A, U2B for example is LM324.
The utility model comprises that also one contrary connects protective circuit, and this circuit is made up of diode D1 and fuse F1, and when the electrode of storage battery on power lead and the car was pressed the correct way access, D1 reverse blocking, electric current be circuit supply rearwards smoothly.If both positive and negative polarity is connect instead because of carelessness, diode D1 forward conduction, electric current refluxes via D1, F1, and circuit supply no longer rearwards, thereby plays the purpose of protection other electron component.
The utility model also comprises an alarm circuit, when battery clip is connected with the storage battery of power shortage, connects instead as both positive and negative polarity, and alarm can be reported to the police, in time to correct.
Fig. 8 is another embodiment schematic diagram of the utility model.Be provided with to press from both sides on cover plate B among this embodiment and hang the accumulator line clip, this accumulator line clip is by constituting with storage battery wire connecting 81 and clip 82.Two battery clips can start vehicle to the automobile storage battery charging of power shortage.
The utility model is simple in structure, and volume is little, is easy to carry, and the power supply of generation is stable.
Claims (7)
1, the portable multifunctional power supply comprises power shell, and the lampshade that is connected with the housing one is provided with the 12V storage battery in the housing, the DC/AC transducer, and lampshade is provided with socket, and socket is provided with lighting; It is characterized in that the DC/AC transducer that described DC/AC transducer is a tape control unit; Also comprise a charging control circuit, this control circuit comprises a charger, one automatic charging control circuit, a protective circuit and function indicating circuit, described automatic charging control circuit comprise that one compares amplifying circuit, a reference voltage circuit, one drive circuit, a charging executive circuit; Described protective circuit comprises an overload protecting circuit and a contrary protective circuit that connects; Described function indicating circuit comprises electric weight indication and charging indication;
The output of 12V battery tension is connected with amplifying circuit relatively, and the benchmark of reference voltage circuit is specially pressed also simultaneously and compared amplifying circuit and be connected simultaneously; Relatively the output signal of amplifying circuit is connected with drive circuit, its output is connected with the charging executive circuit, charging executive circuit actuating signal is connected with the 12V storage battery, and the 12V battery tension converts the 110V/220V alternating current to through the DC/AC transducer and outputs to charger or use power supply as AC load; The electric energy of this charger is delivered to comparison amplifying circuit and charging executive circuit simultaneously; The output of comparison amplifying circuit is also delivered to indicating circuit simultaneously and is carried out electric weight and charging indication; The output of 12V storage battery also is connected with overload protecting circuit with contrary indicating circuit taking alarm respectively.
According to the described portable multifunctional power supply of claims, it is characterized in that 2, described charging executive circuit is made of a relay J Z, the two ends of its normally opened contact also meet a dropping resistor R14, and the arm of deciding of normally opened contact is connected in series a diode D2; Relay J Z coil also meets a diode D4.
According to the described portable multifunctional power supply of claims, it is characterized in that 3, described drive circuit is made of a transistor N1, the collector electrode of N1 is connected with the tie point of relay J Z coil with diode D4.
4, according to the described portable multifunctional power supply of claims, it is characterized in that, described relatively amplifying circuit is made of an operational amplifier ICA, and output connects the biasing resistor of two serial connections, and the resistance mid point of these two biasings is connected with the base stage of drive circuit transistor N1.
According to the described portable multifunctional power supply of claims, it is characterized in that 5, described reference voltage reaches a potentiometer that is connected with its collector electrode by a transistor N2 and constitutes, generation one reference voltage and 12V battery tension compare.
According to the described portable multifunctional power supply of claims, it is characterized in that 6, the control unit of described DC/AC transducer comprises prime control unit and back level control unit;
Described prime control unit comprises an overcurrent comparison circuit, under-voltage comparison circuit, temperature comparison circuit, overvoltage crowbar, shutoff restore circuit, frequency modulation circuit, the wide modulation circuit of ripple and drive circuit A and drive circuit B; Current signal is input to the overcurrent comparison circuit, power supply voltage signal is input to overvoltage crowbar and under-voltage comparison circuit respectively, exports a signal respectively to the wide modulation circuit of ripple from overcurrent comparison circuit, under-voltage comparison circuit, overvoltage crowbar and frequency modulation circuit; Temperature signal outputs to under-voltage comparison circuit through temperature comparison circuit, under-voltage comparison circuit with turn-off that restore circuit is two-way to be connected, under-voltage comparison circuit is exported an alarm signal to alarm simultaneously;
Described back level control unit comprises a voltage stabilizing feedback circuit, the wide modulation circuit of ripple, frequency modulation circuit and drive circuit C, drive circuit D; Frequency modulation circuit produces an operating frequency to the wide modulation circuit of ripple, and the wide modulation circuit output of ripple two paths of signals is to drive circuit C and drive circuit D; The output of drive circuit C and drive circuit D drives back level oscillating circuit respectively, it is exported one respectively and feeds back signal to the voltage stabilizing feedback circuit simultaneously, this voltage stabilizing feedback circuit outputs to the wide modulation circuit of ripple, after modulating together, the signal that the wide modulation circuit of ripple is exported the signal and the frequency modulation circuit of the output of voltage stabilizing feedback circuit outputs to drive circuit C and drive circuit D more respectively, so circulation.
According to the described portable multifunctional power supply of claims, it is characterized in that 7, be provided with one on the described cover plate and can press from both sides the harness clip of hanging storage battery, this accumulator line clip is by constituting with storage battery wire connecting and clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249675 CN2457780Y (en) | 2000-10-17 | 2000-10-17 | Hand-held multifunction power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249675 CN2457780Y (en) | 2000-10-17 | 2000-10-17 | Hand-held multifunction power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457780Y true CN2457780Y (en) | 2001-10-31 |
Family
ID=33608067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249675 Expired - Lifetime CN2457780Y (en) | 2000-10-17 | 2000-10-17 | Hand-held multifunction power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457780Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414810C (en) * | 2006-09-29 | 2008-08-27 | 天津市正方工业有限公司 | Voltage identification short circuit protection constant current voltage stabilizing circuit |
| TWI410017B (en) * | 2010-06-30 | 2013-09-21 | Upi Semiconductor Corp | Processing device and processing system utilizing the same |
| CN112165137A (en) * | 2020-09-30 | 2021-01-01 | 重庆辉腾能源股份有限公司 | Multifunctional portable storable power supply |
-
2000
- 2000-10-17 CN CN 00249675 patent/CN2457780Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414810C (en) * | 2006-09-29 | 2008-08-27 | 天津市正方工业有限公司 | Voltage identification short circuit protection constant current voltage stabilizing circuit |
| TWI410017B (en) * | 2010-06-30 | 2013-09-21 | Upi Semiconductor Corp | Processing device and processing system utilizing the same |
| CN112165137A (en) * | 2020-09-30 | 2021-01-01 | 重庆辉腾能源股份有限公司 | Multifunctional portable storable power supply |
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