High-frequency impulse quick charge stake
Technical field
The utility model relates to a kind of charging pile of conventional charge mode, specifically, relates to a kind of high-frequency impulse quick charge stake, belongs to electronic technology field.
Background technology
At present; along with the continuous intensification of global energy crisis; low-carbon economy also becomes the theme of China's economic development; electric automobile will become the important component part of China's new forms of energy strategy; the Chinese government and automobile industry progressively recognize that band is energy-conservation and reduce discharging the Main way that will be future automobile technical development, and Development of EV is then the most important thing, are also auto industry reply energy crises; the challenge of natural environment and climate change, keeps the optimal path of sustainable harmonious development.Electric automobile is the complicated and engineering of system of item, and be exactly wherein one of important component part to the charging pile of accumulator of electric car charging, therefore developing this product has wide market prospects, bring larger economic benefit will to society and enterprise.
Along with the appearance of national new-energy automobile subsidy policy, each new forms of energy car Model City's local policy or continuity or newly push away, for public subsidies are supporting, promote various places new-energy automobile market development.Propose in " automobile industry adjustment and development planning " that the General Office of the State Council announces, next three years China plan " form the new-energy automobile production capacities such as 500,000 pure electric vehicles, charged type hybrid power and plain edition hybrid powers, new-energy automobile sales volume accounts for passenger car total sales volume 5% and acts on ".
According to technology and the operating characteristic of electric automobile power battery group, there is certain difference in the charge mode of electric automobile.For the selection of charging scheme, ubiquity normal charge, quick charge and battery pack fast replacement system 3 kinds of patterns now.Conventional charge mode normal charge refers to and adopts small area analysis to charge at a slow speed to storage battery within the longer time, and common charging is named again in this charging.Conventional battery all adopts the constant pressure and flow three stage charging system of small area analysis, the general charging interval is 10 ~ 12 hours, the longlyest reach 15 hours, charging interval is long, use to actual vehicle and bring much inconvenience, but due to normal charge with the electric current of routine for charge in batteries, therefore stay at home, parking lot and bus stop can carry out.For realizing carrying out quick charge under the conventional charge mode of small area analysis, traditional charging device mainly relies on and improves the object that charging current reaches boost battery charge, although the charge in batteries time can be shortened to a certain extent like this, but the charging interval is still more than 8 hours usually, and this lasting big current quick charge mode also can cause service lifetime of accumulator to shorten, serious also can cause battery damage.
Quick charge is also known as emergent charging, refer to larger electric current within the short time of 30min to 2h, for electric automobile carries out a kind of pattern of charging, charging interval is short, general charging current is 150-400A, because charging current is large, easily causes battery abnormal, cause battery life short and there is potential safety hazard, big current also may produce injurious effects to utility network.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of boost battery charge stake, overcomes the defect of existing charging pile, after adopting the utility model quick charge stake, achieves the object of carrying out quick charge under small area analysis.
Another object of the present utility model is increasing storage battery service life.
For solving the problems of the technologies described above, the technical solution of the utility model is: high-frequency impulse quick charge stake, is characterized in that, described charging pile comprises:
Multi-resonant oscillating circuit, for generation of continuous print t1 pulse signal, t2 pulse signal;
Monostable circuit, for receiving the pulse signal of multi-resonant oscillating circuit and running in t2 pulse period, exports broad-adjustable pulse control signal;
Charge switch circuit, for receiving the pulse signal of multi-resonant oscillating circuit, controls the positive charge process of storage battery in t1 pulse period;
Discharge switching circuit, for receiving the pulse control signal of monostable circuit, controls the electric discharge of storage battery in t2 pulse period, electric discharge time-out process.
A kind of prioritization scheme, at t1 pulse period, multi-resonant oscillating circuit exports high level, controls the control element conducting in charge switch circuit, accumulators positive charge.
Further, at t2 pulse period, multi-resonant oscillating circuit output low level, control the control element cut-off in charge switch circuit, positive charge is suspended;
Meanwhile, monostable circuit, monostable circuit exports the control element conducting that burst pulse removes controlled discharge switching circuit, carries out repid discharge to storage battery;
Before multi-resonant oscillating circuit exports high level again, the control element of charge switch circuit and the control element of discharge switching circuit end respectively.
Further, described charging pile also comprises:
Voltage detecting and protective circuit, be connected with storage battery, for detecting battery tension, disconnects the working power of multi-resonant oscillating circuit and monostable circuit when battery tension is sufficient.
Further, described multi-resonant oscillating circuit comprises integrated circuit (IC) 1, resistance R1, resistance R2, electric capacity C1 and electric capacity C2,1 pin ground connection of integrated circuit (IC) 1,5 foot meridian capacitor C1 ground connection, 2, one end of 6 pin connecting resistance R2, electric capacity C2, the other end ground connection of electric capacity C2,3 pin of another termination integrated circuit (IC) 1 of resistance R2, one end of resistance R1, monostable circuit, charge switch circuit, 4,8 pin and monostable circuits of another termination integrated circuit (IC) 1 of resistance R1.
Further, described monostable circuit comprises integrated circuit (IC) 2, resistance R3, resistance R4, electric capacity C3, electric capacity C4 and electric capacity C5, 1 pin ground connection of described integrated circuit (IC) 2, 5 foot meridian capacitor C4 ground connection, 2 pin meet electric capacity C3, one end of resistance R3, another termination multi-resonant oscillating circuit of electric capacity C3, charge switch circuit, another termination multi-resonant oscillating circuit of resistance R3, one end of resistance R4 and power supply, 4 pin of integrated circuit (IC) 2, 8 pin, one end of another termination capacitor C5 of resistance R4, 6 pin of integrated circuit (IC) 2, 7 pin, the other end ground connection of electric capacity C5, 3 pin of integrated circuit (IC) 2 connect discharge switching circuit.
Further, described charge switch circuit comprises resistance R6, resistance R8, electric capacity C7 and triode VT1, the one termination multi-resonant oscillating circuit of resistance R6, electric capacity C7, the base stage of another termination triode VT1 of resistance R6, electric capacity C7, one end of the collector electrode connecting resistance R8 of triode VT1, another termination power of resistance R8, the emitter of triode VT1 connects discharge switching circuit.
Further, described discharge switching circuit comprises resistance R7, resistance R9, electric capacity C8, electric capacity C9, triode VT2, voltage stabilizing didoe VD2, the positive pole order steady-state circuit of voltage stabilizing didoe VD2, one end of the negative pole connecting resistance R7 of voltage stabilizing didoe VD2, one end of another termination capacitor C8 of resistance R7, the base stage of triode VT2, the other end ground connection of electric capacity C8, the collector electrode of triode VT2 connects charge switch circuit, the positive pole of storage battery, the emitter connecting resistance R9 of triode VT2, one end of electric capacity C9, resistance R9, the other end ground connection of electric capacity C9, the minus earth of storage battery.
Further, described voltage detecting and protective circuit comprise integrated circuit (IC) 3, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, diode VD7, triode VT3, indicator light LED1, indicator light LED2 and relay K A coil, 1 pin of integrated circuit (IC) 3 connects 2 pin of integrated circuit (IC) 3, 5 pin, 3 pin of integrated circuit (IC) 3 connect the positive pole of storage battery, 4 pin ground connection of integrated circuit (IC) 3, and 5 pin of integrated circuit (IC) 3 connect 7 pin of integrated circuit (IC) 3 through resistance R12, one end of resistance R13,6 pin connecting resistance R10 of integrated circuit (IC) 3, one end of resistance R11, the other end ground connection of resistance R11,8 pin of another termination integrated circuit (IC) 3 of resistance R10, one end of relay K A coil, the negative pole of diode VD7, one end of resistance R14 and power supply, the positive pole of another termination indicator light LED1 of resistance R14, the base stage of another termination triode VT3 of resistance R13, the other end of the collector connecting relay KA coil of triode VT3, the positive pole of diode VD7, the negative pole of indicator light LED1, one end of resistance R15, the other end of resistance R15 through indicator light LED2 ground connection, the grounded emitter of triode VT3.
Further, relay K A moving contact is connected between monostable circuit and power supply.
The utility model adopts technique scheme, compared with prior art, has the following advantages: high-frequency impulse quick charge stake, in charging process, have employed the very brief electric discharge of timing or is referred to as " suck-back " formula charging modes, charge efficiency is improved greatly.Adopt the fast mold filling formula of high-frequency impulse discharge and recharge depolarising, in charging process, periodically accumulators electric discharge makes its " suck-back ", eliminate bubble, reduce internal charging resistance, thus improve charging quality and charge efficiency, can prevent again the damage of storage battery, the charging interval shortens to 2 ~ 3 hours, the useful life of storage battery improves 1.5-2 doubly, achieves the object of quick charge under small area analysis, again increasing storage battery service life.
Owing to adopting low current charge, so decrease the impact produced utility network.
This device can be widely used in the quick charge of the storage batterys such as nickel-cadmium cell, electric bicycle, automobile, motorcycle.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing 1 is the theory diagram of charge in batteries stake in the utility model embodiment;
Accompanying drawing 2 is electrical schematic diagrams of charge in batteries stake in the utility model embodiment;
Accompanying drawing 3 is oscillograms of charge in batteries stake in the utility model embodiment;
In figure,
1-multi-resonant oscillating circuit; 2-monostable circuit; 3-charge switch circuit; 4-discharge switching circuit; 5-direct current regulation circuit; 6-voltage detecting and protective circuit; 7-current rectifying and wave filtering circuit.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.
As shown in Figure 1; high-frequency impulse quick charge stake; comprise multi-resonant oscillating circuit 1, monostable circuit 2, charge switch circuit 3, discharge switching circuit 4, direct current regulation circuit 5, voltage detecting and the protective circuit 6 and current rectifying and wave filtering circuit 7 that are coupled in together; the input electrical connection 220V AC power of current rectifying and wave filtering circuit 7, "+" that the output of charge switch circuit 3 and the input of discharge switching circuit 4 are electrically connected to voltage detecting and protective circuit 6 and accumulator terminal jointly holds.
As shown in Figure 2, multi-resonant oscillating circuit 1 comprises integrated circuit (IC) 1, resistance R1, resistance R2, electric capacity C1, electric capacity C2,1 pin ground connection of integrated circuit (IC) 1,5 foot meridian capacitor C1 ground connection, 2, one end of 6 pin connecting resistance R2, electric capacity C2, the other end ground connection of electric capacity C2,3 pin of another termination integrated circuit (IC) 1 of resistance R2, one end of resistance R1, monostable circuit 2, charge switch circuit 3,4,8 pin of another termination integrated circuit (IC) 1 of resistance R1 and monostable circuit 2.
The frequency of oscillation of multi-resonant oscillating circuit 1 parameter set by resistance R1, resistance R2 and electric capacity C2 determines, it takes up space than being 50%.Resistance R1, resistance R2 and electric capacity C2 form charge circuit, and its charging interval, t1 was: t1=0.693 (R1+R2) C2; The circuit be made up of resistance R2, electric capacity C2 is the discharge loop of multivibrator, and discharge time, t2 was: t2=0.693R2C2; Cycle of oscillation, T was: T=t1+t2.At t1 pulse period, 3 pin of integrated circuit (IC) 1 export high level, control the triode VT1 conducting in charge switch circuit 3, accumulators positive charge.At t2 pulse period, effect one: 3 pin output low levels of integrated circuit (IC) 1, triode VT1 ends, and positive charge is suspended; Effect two: trigger the monostable circuit be made up of integrated circuit (IC) 2.In t2 pulse period, storage battery can be set by monostable circuit 2 and carry out the time of repid discharge and the intermittent time of charging.
Monostable circuit 2 comprises integrated circuit (IC) 2, resistance R3, resistance R4, electric capacity C3, electric capacity C4, electric capacity C5, relay K A moving contact, 1 pin ground connection of described integrated circuit (IC) 2, 5 foot meridian capacitor C4 ground connection, 2 pin meet electric capacity C3, one end of resistance R3, the other end of the other end connecting resistance R2 of electric capacity C3, charge switch circuit 3, the other end of the other end connecting resistance R1 of resistance R3, resistance R4, one end of relay K A moving contact, 4 pin of integrated circuit (IC) 2, 8 pin, one end of another termination capacitor C5 of resistance R4, 6 pin of integrated circuit (IC) 2, 7 pin, the other end ground connection of electric capacity C5, 3 pin of integrated circuit (IC) 2 connect discharge switching circuit 4.
By the capacitance-resistance parameter of setting, the pulse duration of monostable circuit can be determined, thus determine that storage battery carries out the time of repid discharge and the intermittent time of charging.When the pulse duration that monostable circuit 2 designs is narrower, the time of electric discharge can shorten, and the intermittent time of charging can lengthen, and when the pulse duration that monostable circuit 2 designs is wider, the time of electric discharge can lengthen, and the intermittent time of charging can shorten.In circuit, electric capacity C3 is pulse signal transmission electric capacity, and the setting that storage battery carries out the intermittent time of repid discharge and charging is determined by resistance R4, electric capacity C5.Operation principle is: from the oscillating impulse of multi-resonant oscillating circuit 1, and the monostable circuit be made up of integrated circuit (IC) 2 is triggered on its negative edge of jumping, and 3 pin output burst pulses of integrated circuit (IC) 2 are gone to control triode VT2 and carried out repid discharge to storage battery.Before arriving to next positive pulse after electric discharge terminates, triode VT1, triode VT2 all end, and are the charging intermittent phase during this period of time.
Charge switch circuit 3 comprises resistance R6, resistance R8, electric capacity C7, triode VT1, the other end of the one terminating resistor R2 of resistance R6, electric capacity C7, the base stage of another termination triode VT1 of resistance R6, electric capacity C7, one end of the collector electrode connecting resistance R8 of triode VT1, another termination direct current regulation circuit 5 of resistance R8 and current rectifying and wave filtering circuit 7, the emitter of triode VT1 connects discharge switching circuit 4.
Under the Pulse Width Control of multi-resonant oscillating circuit 1, when the base stage of triode VT1 is high level, transistor VT1 conducting is to battery positive charge, and when the base stage of transistor VT1 is low level, transistor VT1 ends, and battery positive charge is suspended.
Discharge switching circuit 4 comprises resistance R7, resistance R9, electric capacity C8, electric capacity C9, triode VT2, voltage stabilizing didoe VD2, the positive pole of voltage stabilizing didoe VD2 connects 3 pin of integrated circuit (IC) 2, one end of the negative pole connecting resistance R7 of voltage stabilizing didoe VD2, one end of another termination capacitor C8 of resistance R7, the base stage of triode VT2, the other end ground connection of electric capacity C8, the emitter of the collector connecting transistor VT1 of triode VT2, the positive pole of storage battery, voltage detecting and protective circuit 6, the emitter connecting resistance R9 of triode VT2, one end of electric capacity C9, resistance R9, the other end ground connection of electric capacity C9, the minus earth of storage battery.
Under the control of monostable circuit 2, when the base stage of transistor VT2 is high level, transistor VT2 conducting, accumulators back discharge, resistance R9, electric capacity C9 form discharge loop, and resistance R9 is discharge resistance, and electric capacity C9 is electric discharge Absorption Capacitance, also claims " suck-back " electric capacity.When the base stage of transistor VT2 is low level, transistor VT2 ends, and storage battery back discharge suspends.
Direct current regulation circuit 5 comprises resistance R5, electric capacity C6, voltage stabilizing didoe VD1; electric capacity C6 is filter capacitor; the other end of one end of electric capacity C6, the positive pole contact relay KA moving contact of voltage stabilizing didoe VD1, one end of resistance R5, voltage detecting and protective circuit 6, the other end of the other end connecting resistance R8 of resistance R5.A stable supply power voltage is provided to multi-resonant oscillating circuit 1, monostable circuit 2.
Voltage detecting and protective circuit 6 comprise integrated circuit (IC) 3, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, diode VD7, triode VT3, indicator light LED1, indicator light LED2 and relay K A coil, 1 pin of integrated circuit (IC) 3 connects 2 pin of integrated circuit (IC) 3, 5 pin, 3 pin of integrated circuit (IC) 3 connect the positive pole of storage battery, 4 pin ground connection of integrated circuit (IC) 3, and 5 pin of integrated circuit (IC) 3 connect 7 pin of integrated circuit (IC) 3 through resistance R12, one end of resistance R13,6 pin connecting resistance R10 of integrated circuit (IC) 3, one end of resistance R11, the other end ground connection of resistance R11,8 pin of another termination integrated circuit (IC) 3 of resistance R10, the positive pole of voltage stabilizing didoe VD1, one end of relay K A coil, the negative pole of diode VD7, one end of resistance R14, the positive pole of another termination indicator light LED1 of resistance R14, the base stage of another termination triode VT3 of resistance R13, the other end of the collector connecting relay KA coil of triode VT3, the positive pole of diode VD7, the negative pole of indicator light LED1, one end of resistance R15, the other end of resistance R15 through indicator light LED2 ground connection, the grounded emitter of triode VT3.
Integrated circuit (IC) 3 comprises A1, A2, A1 is emitter follower, emitter follower will send the voltage comparator be made up of A2 in integrated circuit (IC) 3 to after battery tension sample of signal, when battery tension is not yet sufficient, 7 pin output low levels of integrated circuit (IC) 3, triode VT3 ends, and relay K A coil no power, charging indicator light LED2 is bright.When storage battery sufficient voltage, 7 pin of integrated circuit (IC) 3 export high level, triode VT3 conducting, charging indicator light LED2 goes out, charging stops indicator light LED1 bright, and relay K A coil obtains electricity, and its relay K A moving contact disconnects, the all power-off of integrated circuit (IC) 1, integrated circuit (IC) 2, stop charging and discharging automatically.Owing to have employed automatic charging hold function, the phenomenon damaging storage battery because overcharging effectively can be prevented.The resistance parameter of adjusting resistance R11 just can change the voltage setting value stopping charging.
Current rectifying and wave filtering circuit 7 comprises step-down transformer TB, the input of step-down transformer TB connects single phase alternating current (A.C.) 220V power supply, the positive pole of one end electrical connection rectifier diode VD3 of step-down transformer TB output, the negative pole of VD4, the positive pole of the other end electrical connection rectifier diode VD5 of step-down transformer TB output, the negative pole of VD6, rectifier diode VD3, the negative pole of VD5 and the positive terminal of filter capacitor C10 are electrically connected to one end of foregoing resistance R5 and the other end of resistance R8, rectifier diode VD4, the positive pole of VD6, the negative pole of filter capacitor C10 is connected with the common of circuit jointly.
As shown in Figure 3, the multivibrator device be made up of integrated circuit (IC) 1 and surrounding related elements, the parameter of frequency of oscillation set by resistance R2 and electric capacity C2 determines, it takes up space than being 50%.When 3 pin of integrated circuit (IC) 1 export high level, triode VT1 conducting, accumulators positive charge.When 3 pin output low level of integrated circuit (IC) 1, triode VT1 ends, and positive charge is suspended.The monostable circuit be made up of integrated circuit (IC) 2 is triggered on its negative edge of jumping, exporting burst pulse goes control triode VT2 to carry out repid discharge to storage battery, and the bubble produced when can eliminate large current charge, reduces internal charging resistance, thus improve charging quality and efficiency, charge efficiency is improved greatly.Before arriving to next positive pulse after electric discharge terminates, triode VT1, triode VT2 all end, be the charging intermittent phase during this period of time, ion in intermittent phase electrolyte inside has sufficient diffusion time, thus ensure that the reaction of rechargeable battery inside is carried out smoothly, repeat said process again and again later, until charging terminates, in figure, waveform is above the oscillogram that 3 pin of integrated circuit (IC) 1 export, middle waveform is the oscillogram that triode VT1 exports, below waveform be the oscillogram that triode VT2 exports.
The voltage detecting that the charging of storage battery stops or unlatching is made up of integrated circuit (IC) 3 and surrounding related elements thereof and protective circuit have been come; when battery tension is not yet sufficient; 7 pin output low levels of integrated circuit (IC) 3; triode VT3 ends; relay K A is failure to actuate, and charging indicator light LED2 is bright.When storage battery sufficient voltage, 7 pin of integrated circuit (IC) 3 export high level, triode VT3 conducting, charging indicator light LED2 goes out, and charging stops indicator light LED1 bright, and relay K A coil obtains electricity, its moving contact disconnects, and all power-off of integrated circuit (IC) 1, integrated circuit (IC) 2, stop charging automatically.Owing to have employed automatic charging hold function, the phenomenon damaging storage battery because overcharging effectively can be prevented.The resistance parameter of adjusting resistance R11 just can change the voltage setting value stopping charging.
In the present embodiment, main components is selected: integrated circuit (IC) 1, integrated circuit (IC) 2 can select NE555, integrated circuit (IC) 3 can select uPC842C or uPC842G, triode VT1, triode VT2 should select high-frequency high-power triode, relay K A can select the relay of 9V, 5A, these devices all can be bought from electronic market, and model specification can be selected voluntarily with reference to the data provided above.
By carrying out contrast test with the conventional charge mode charging pile used at present, the charging interval of the utility model charging pile is 2 ~ 3 hours; The life-span of storage battery improves 1.5-2 doubly.
The above is the citing of the utility model preferred forms, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection range of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection range of the present utility model.