CN204290453U - Electric motorcar charging station charging circuit - Google Patents
Electric motorcar charging station charging circuit Download PDFInfo
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- CN204290453U CN204290453U CN201420575995.XU CN201420575995U CN204290453U CN 204290453 U CN204290453 U CN 204290453U CN 201420575995 U CN201420575995 U CN 201420575995U CN 204290453 U CN204290453 U CN 204290453U
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- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 9
- 208000011726 slow pulse Diseases 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005987 sulfurization reaction Methods 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
Abstract
The utility model discloses kind of an electric motorcar charging station charging circuit, comprise current rectifying and wave filtering circuit 1, high frequency transformer circuit, sample circuit, A/D analog to digital conversion circuit and single chip circuit.The utility model proposes a kind of intelligent charge design for sealed non-maintenance lead-acid accumulator cell, for the variety of problems occurred in battery charging process, analyze and solve method, a kind of aptitude chargeable circuit that can realize the slow pulse current charge of four-part form to lead acid accumulator is proposed, by pulse frequency and the duty ratio of control switch power supply, regulate charging current and voltage, realize the slow pulse current charge of the classification of storage battery.The utility model not only can realize quick charge, can reduce gassing simultaneously, eliminates sulfuration, carries out equalizing charge, thus extend the useful life of lead acid accumulator widely.
Description
Technical field
The utility model relates to a kind of charging circuit, specifically a kind of electric motorcar charging station charging circuit.
Background technology
Along with popularizing of electric motor car, electric motor car charging technique also receives the concern of people.The electric vehicle power accumulator of China is mostly lead acid accumulator, this mainly due to lead acid accumulator possess skills maturation, cost is low, battery capacity is large, follow the advantages such as load good output, memory-less effect.But traditional normal charge overlong time, rapid nitriding still fails to solve completely so far, seriously governs the development of electric motor car.
Utility model content
The purpose of this utility model is to provide a kind of quick charge and can extends the electric motorcar charging station charging circuit in lead acid accumulator useful life, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of electric motorcar charging station charging circuit, comprise current rectifying and wave filtering circuit 1, high frequency transformer circuit, sample circuit, A/D analog to digital conversion circuit and single chip circuit, 220V alternating current is carried out the direct current feeding high frequency transformer circuit that rectifying and wave-filtering obtains 300V by described rectifying and wave-filtering 1, the secondary winding of high frequency transformer exports 48V voltage and charges a battery, the sampling that sample circuit carries out voltage and current is respectively provided with in the exit of storage battery, sampled signal sends into low pass filter to filter the interference of harmonic wave, the signal that low pass filter exports sends into A/D analog to digital conversion circuit, analog signal being converted to the discernible digital signal of single-chip microcomputer sends in single-chip microcomputer, single-chip microcomputer is converted to actual value by software by sending the voltage and current signal come to, and they and last actual value are compared frequency and the duty ratio of the PWM waveform of rear regulation output, and the light on and off controlling indicator light are to indicate charging process, when microprocessor detect is full of electricity to storage battery, control relay deenergization, stop charging, storage battery gives single-chip microcomputer by DC-DC converter after current rectifying and wave filtering circuit 2 simultaneously, A/D analog to digital converter and indicating circuit provide power supply.
As further program of the utility model: described current rectifying and wave filtering circuit 1 is made up of relay circuit, bridge shape filter rectifier and protective circuit; described relay circuit is used for switching on and off power supply; described bridge shape filter rectifier is used for alternating current to be converted to DC power supply, and protective circuit is used for overvoltage and overcurrent protection.
As the utility model further scheme: the described 300V DC power supply through rectifying and wave-filtering gives the armature winding of high frequency transformer T1, the lower end of armature winding is connected with switching tube DFF4N60, and switching tube DFF4N60 is controlled by photoelectrical coupler NEC2501 and PNP triode Q2 and drives.
Compared with prior art, the beneficial effects of the utility model are: the utility model proposes a kind of intelligent charge design for sealed non-maintenance lead-acid accumulator cell, for the variety of problems occurred in battery charging process, analyze and solve method, a kind of aptitude chargeable circuit that can realize the slow pulse current charge of four-part form to lead acid accumulator is proposed, by pulse frequency and the duty ratio of control switch power supply, regulate charging current and voltage, realize the slow pulse current charge of the classification of storage battery.The utility model not only can realize quick charge, can reduce gassing simultaneously, eliminates sulfuration, carries out equalizing charge, thus extend the useful life of lead acid accumulator widely.
Accompanying drawing explanation
Fig. 1 is the system architecture diagram of electric motorcar charging station charging circuit;
Fig. 2 is the circuit diagram of the current rectifying and wave filtering circuit 1 of electric motorcar charging station charging circuit;
Fig. 3 is the charging main circuit diagram of electric motorcar charging station charging circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 3, in the utility model embodiment, a kind of electric motorcar charging station charging circuit, comprise current rectifying and wave filtering circuit 1, high frequency transformer circuit, sample circuit, A/D analog to digital conversion circuit and single chip circuit, 220V alternating current is carried out the direct current feeding high frequency transformer circuit that rectifying and wave-filtering obtains 300V by rectifying and wave-filtering 1, the secondary winding of high frequency transformer exports 48V voltage and charges a battery, the sampling that sample circuit carries out voltage and current is respectively provided with in the exit of storage battery, sampled signal sends into low pass filter to filter the interference of harmonic wave, the signal that low pass filter exports sends into A/D analog to digital conversion circuit, analog signal being converted to the discernible digital signal of single-chip microcomputer sends in single-chip microcomputer, single-chip microcomputer is converted to actual value by software by sending the voltage and current signal come to, and they and last actual value are compared frequency and the duty ratio of the PWM waveform of rear regulation output, and the light on and off controlling indicator light are to indicate charging process, when microprocessor detect is full of electricity to storage battery, control relay deenergization, stop charging, storage battery gives single-chip microcomputer by DC-DC converter after current rectifying and wave filtering circuit 2 simultaneously, A/D analog to digital converter and indicating circuit provide power supply.
Current rectifying and wave filtering circuit 1 is made up of relay circuit, bridge shape filter rectifier and protective circuit, and relay circuit is used for switching on and off power supply, and bridge shape filter rectifier is used for alternating current to be converted to DC power supply, and protective circuit is used for overvoltage and overcurrent protection.
300V DC power supply through rectifying and wave-filtering gives the armature winding of high frequency transformer T1, and the lower end of armature winding is connected with switching tube DFF4N60, and switching tube DFF4N60 is controlled by photoelectrical coupler NEC2501 and PNP triode Q2 and drives.
Operation principle of the present utility model is: relay J 1 drive circuit is by photoelectrical coupler NEC2501, PNP triode Q3 and freewheeling circuit are formed, photoelectrical coupler NEC2501 moves back to Single Chip Microcomputer (SCM) system in order to prevent on-the-spot strong electromagnetic or power-frequency voltage by output channel, photoelectrical coupler NEC2501 is by electricity-light-electric this conversion, " light " this link is utilized to complete isolation features, because the transmission of light signal is not by electric field, the interference in magnetic field, effectively can isolate the signal of telecommunication, improve the antijamming capability of circuit, triode Q3 is used for the signal of photoelectrical coupler NEC2501 to amplify, to guarantee effectively to drive relay, wherein resistance R16, resistance R17 and resistance R18 is current-limiting resistance, diode D5 and resistance R1 forms freewheeling circuit, after the coil blackout of relay, diode D5 and resistance R1 provides afterflow passage for the reverse voltage that coil produces.Current rectifying and wave filtering circuit is made up of four diode D1 ~ D4, four electric capacity C31 ~ C34 and filter capacitor C1, and electric capacity C31 ~ C34 is very large to interchange 50Hz impedance, and very little to the impedance of High-frequency Interference, substantially can enter ground smoothly by it.In addition, electric capacity C31 ~ C34 also has protective effect to rectifier diode, and in the moment that circuit has just been connected, the charging current of bulky capacitor C1 is very large, when not having electric capacity C31 ~ C34, all will pass through diode.Because the voltage at electric capacity C31 ~ C34 two ends can not suddenly change, electric capacity C31 ~ C34 is in short-circuit condition, diode does not flow through very large electric current entirely, thus protects diode.Rectification circuit pulsating current is out become DC power supply by filter capacitor C1, and the fuse protective circuit overcurrent of protective circuit, piezo-resistance RT1 is for the protection of the overvoltage of circuit.
Photoelectrical coupler NEC2501 (U11) is for isolating forceful electric power and light current, and prevent strong power part from disturbing Single Chip Microcomputer (SCM) system, PNP triode Q2 is used for driving switch pipe DFF4N60, and guarantee the conducting of switching tube, resistance R8 ~ R11 is current-limiting resistance.Resistance R2, electric capacity C2, diode D6 and electric capacity C6, resistance R3, diode D7 form the protective circuit of switching tube DFF4N60; in the moment that the armature winding of transformer powers on; if there is no electric capacity C6, resistance R3, diode D7; voltage then with regard to having a step is added in the drain-source pole of switching tube; produce the two ends that a too high du/dt is added in switching tube, make switch easily breakdown.And the buffer circuit be made up of electric capacity C6, resistance R3, diode D7, electricity in a flash on the transformer, because the voltage at electric capacity C6 two ends can not suddenly change, has a process risen, the voltage at its two ends raises along with the charging of electric capacity, thus plays the effect of buffering.After switching tube disconnects, armature winding will produce a reverse voltage, and now, resistance R2, electric capacity C2, diode D6 are that reverse voltage provides a path, and reverse voltage turns back to elementary group, by energy ezpenditure on RC loop.Secondary winding meets diode D8, diode D9, diode D10 and diode D15 and forms secondary rectification circuit, relay J 2 is for the deenergization when being full of electricity, resistance R4 and diode D12 is the absorbing circuit of relay J 2 coil, photoelectrical coupler NEC2501 and PNP triode Q4 controls and drives relay, and resistance R15 ~ R17 forms the sample circuit of storage battery virtual voltage.
Claims (3)
1. an electric motorcar charging station charging circuit, comprise current rectifying and wave filtering circuit 1, high frequency transformer circuit, sample circuit, A/D analog to digital conversion circuit and single chip circuit, it is characterized in that, 220V alternating current is carried out the direct current feeding high frequency transformer circuit that rectifying and wave-filtering obtains 300V by described rectifying and wave-filtering 1, the secondary winding of high frequency transformer exports 48V voltage and charges a battery, the sampling that sample circuit carries out voltage and current is respectively provided with in the exit of storage battery, sampled signal sends into low pass filter to filter the interference of harmonic wave, the signal that low pass filter exports sends into A/D analog to digital conversion circuit, analog signal being converted to the discernible digital signal of single-chip microcomputer sends in single-chip microcomputer, single-chip microcomputer is converted to actual value by software by sending the voltage and current signal come to, and they and last actual value are compared frequency and the duty ratio of the PWM waveform of rear regulation output, and the light on and off controlling indicator light are to indicate charging process, when microprocessor detect is full of electricity to storage battery, control relay deenergization, stop charging, storage battery gives single-chip microcomputer by DC-DC converter after current rectifying and wave filtering circuit 2 simultaneously, A/D analog to digital converter and indicating circuit provide power supply.
2. electric motorcar charging station charging circuit according to claim 1; it is characterized in that; described current rectifying and wave filtering circuit 1 is made up of relay circuit, bridge shape filter rectifier and protective circuit; described relay circuit is used for switching on and off power supply; described bridge shape filter rectifier is used for alternating current to be converted to DC power supply, and protective circuit is used for overvoltage and overcurrent protection.
3. electric motorcar charging station charging circuit according to claim 1, it is characterized in that, the described 300V DC power supply through rectifying and wave-filtering gives the armature winding of high frequency transformer T1, the lower end of armature winding is connected with switching tube DFF4N60, and switching tube DFF4N60 is controlled by photoelectrical coupler NEC2501 and PNP triode Q2 and drives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420575995.XU CN204290453U (en) | 2014-09-30 | 2014-09-30 | Electric motorcar charging station charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420575995.XU CN204290453U (en) | 2014-09-30 | 2014-09-30 | Electric motorcar charging station charging circuit |
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| Publication Number | Publication Date |
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| CN204290453U true CN204290453U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420575995.XU Active CN204290453U (en) | 2014-09-30 | 2014-09-30 | Electric motorcar charging station charging circuit |
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| CN (1) | CN204290453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451711A (en) * | 2016-09-26 | 2017-02-22 | 成都月庚地科技有限公司 | Composite pulse lead-acid storage battery charger and charging method thereof |
-
2014
- 2014-09-30 CN CN201420575995.XU patent/CN204290453U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451711A (en) * | 2016-09-26 | 2017-02-22 | 成都月庚地科技有限公司 | Composite pulse lead-acid storage battery charger and charging method thereof |
| CN106451711B (en) * | 2016-09-26 | 2018-12-25 | 成都月庚地科技有限公司 | A kind of composite pulse lead acid batteries charger and its charging method |
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