CN202034816U - Intelligent charger for electric bicycle - Google Patents
Intelligent charger for electric bicycle Download PDFInfo
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- CN202034816U CN202034816U CN 201120167825 CN201120167825U CN202034816U CN 202034816 U CN202034816 U CN 202034816U CN 201120167825 CN201120167825 CN 201120167825 CN 201120167825 U CN201120167825 U CN 201120167825U CN 202034816 U CN202034816 U CN 202034816U
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- charger
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Abstract
The utility model discloses an intelligent charger for an electric bicycle, which comprises a charging circuit, and is characterized in that the charging circuit is connected with a control circuit and a detection circuit, the control circuit and the detection circuit are respectively connected with a controller, and the control circuit is connected with a storage battery pack. The intelligent charger adopts an AT89S52 singlechip as a control core, signals collected by a voltage comparator OP07 are received and processed in real time, and in addition, the AT89S52 singlechip is matched with a relay to realize a corresponding power cut function. The charging circuit of the intelligent charger can also use a single-tube switch power supply of a UC3842 driving field-effect tube for being matched with an LM324 power amplification circuit for being used as a charging module, voltage and current signals are intelligently collected, and the charging state and the fully charging state are displayed through a red lamp and a green lamp. A correct charging protection function is also added on the intelligent charger to ensure that the charger is connected with the battery, then, the charger is connected with the commercial power for charging the battery, the battery can not be charged when the sequence is wrong, and the service life of a storage battery is prolonged.
Description
Technical field
The utility model relates to electric car charger, specifically, relates to a kind of electric motor intelligent charger.
Background technology
" lead acid accumulator " be now till widely used in the world a kind of inorganic chemistry power supply, this product has good invertibity, voltage characteristic is steady, long service life, applied widely, therefore abundant raw materials (and renewable use) and advantage such as cheap are widely used in national defence, communication, railway, traffic, industrial and agricultural production department.At present, the electric vehicle power accumulator of China has also adopted lead acid accumulator mostly.But, if the storage battery improper use can cause its life-span to shorten greatly.The factor that influences service life of lead accumulator has a lot, and by discovering: because charging method is incorrect, charging technique can not adapt to the specific demand of lead accumulator, causes battery to be difficult to reach the cycle life of regulation.That is to say that most storage batterys are not damaged, but " filling bad "! This shows that good charger is to having very important effect in useful life of storage battery! Though the technology of storage battery self has had no small progress in recent years; but the development of the charger that replenishes once more as its energy is very slow; traditional charger can only carry out simple constant voltage or constant current charge---thus the charging interval is very long, and charge efficiency reduces.In addition, when charging finished, traditional charger can not be full of back outage automatically at battery, thus people often forget charger pulled up and cause the storage battery overshoot, influence its useful life, more very can directly scrap producing explosion phenomenon.This is the deficiencies in the prior art part.
The utility model content
The technical problems to be solved in the utility model provides a kind of electric motor intelligent charger, has prolonged charger useful life.
The utility model adopts following technical scheme to realize goal of the invention:
A kind of electric motor intelligent charger comprises charging circuit, it is characterized in that: described charging circuit connects control circuit and testing circuit, and described control circuit all is connected microcontroller with testing circuit, and described control circuit connects batteries.
As the further qualification to the technical program, described microcontroller connects display circuit and timing circuit.
As the further qualification to the technical program, described testing circuit comprises four-operational amplifier LM324 and voltage comparator OP07.
As the further qualification to the technical program, described control circuit comprises relay M and two triodes 9014.
As the further qualification to the technical program, described microcontroller is the AT89S52 single-chip microcomputer.
Compared with prior art, advantage of the present utility model and good effect are: the utility model adopts the AT89S52 single-chip microcomputer to be the control core, and the signal of in real time voltage comparator OP07 being gathered reception is handled and cooperated relay to realize corresponding power down function.Charging circuit of the present utility model is a charging module with the single tube Switching Power Supply cooperation LM324 discharge circuit of UC3842 driving field effect transistor also, intelligent acquisition voltage, current signal, and with traffic lights demonstration charged state and full state.The utility model has also added correct charge protection function, and after guaranteeing charger and battery being connected earlier, charger being electrically connected with the city could be to battery charge again, and sequence error will cause and can not charge to battery, prolong the useful life of storage battery.
Description of drawings
Fig. 1 is the block diagram of the utility model preferred embodiment.
Fig. 2 is the utility model preferred embodiment charging circuit structure principle chart.
Fig. 3 is the utility model preferred embodiment electric circuit inspection circuit structure schematic diagram.
Fig. 4 is the utility model preferred embodiment timing circuit and display circuit structure principle chart.
Fig. 5 is the utility model preferred embodiment control circuit structure principle chart.
Fig. 6 is a flow chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment the utility model is done further to describe in detail.
Referring to Fig. 1-Fig. 6, the utility model comprises single chip computer AT 89S52, charging circuit, testing circuit, control circuit, timing circuit and display circuit.Described testing circuit comprises four-operational amplifier LM324 and voltage comparator OP07, and described control circuit comprises relay M and two triodes 9014.
Charging circuit as shown in Figure 3, the 220v alternating current becomes through over commutation and is pulsating direct current, forms direct current about stable 300V through capacitor filtering again.U1 is the UC3842 pulsewidth modulated intergrated circuit.Its 5 pin is a power cathode, and 7 pin are positive source, and 6 pin are that pulse output directly drives field effect transistor 5N60T, and 3 pin are maximum current limit, adjust the maximum current of charger by the resistance of regulating the resistance that links to each other.2 pin are Voltage Feedback, can regulate the output voltage of charger.External oscillation resistance of 4 pin and oscillating capacitance.T is a high-frequency pulse transformer, and its effect has three.The firstth, will press high-voltage pulse to be action of low-voltage pulse.The secondth, play the effect of isolated high-voltage, with protection against electric shock.The 3rd is to provide working power for various chips and peripheral circuit thereof.D9 (TL431) is a reference voltage source, cooperates U2 (optical coupler JC817) to play the effect of automatic adjusting charger voltage.When beginning energising, the direct current through about the 300V that rectification and filtering obtain is delivered to the 7th pin of U1 by the high-power resistance step-down, and U1 is started.The 6 pin output square-wave pulse of U1 is delivered to the grid that VMOS manages 5N60T, and the drain electrode of 5N60T is delivered on the former limit of the process of the high voltage direct current about 300V transformer T simultaneously, conducting and the shutoff of the oscillator signal control 5N60T of 6 pin.The first via voltage of T output winding provides reliable source of power for U1 simultaneously.The second road voltage obtains stable voltage through rectifying and wave-filtering, plays the electric current that prevents battery through this diode of fast recovery diode UGP50G(and pours in down a chimney effect to charger) charge the battery.Third Road voltage is through rectifier diode FR104 output, for LM324 (four-operational amplifier, 4 pin be power supply just, 11 pin are power supply ground) and peripheral circuit 12V is provided working power.The 78p05 that flows through again simultaneously is depressurized to 5V, and coming provides 5V working power for single-chip microcomputer and peripheral circuit thereof.
When charging normal, charging current forms this negative voltage of negative polarity current sampling voltage and is added in lm324 the 9th pin on sample resistance, makes 8 pin output high level, makes the indicator light of red LED (charging) bright, and expression is just at constant current charge; For guaranteeing that charger has the constant current constant voltage characteristic, must do closed-loop control according to the charging and discharging of accumulator curve, be in under-voltage condition behind the batteries discharge off, when recharging, initial charge fails to be convened for lack of a quorum very big, and is as not adding restriction, all unfavorable to battery pack and charger.The constant current control of this module utilizes pressure drop control UC3842d 3 pin (the responsive end of electric current) on the VMOS pipe source resistance, when the electric current of output is excessive, the pressure drop of source electrode current-limiting resistance increases, the voltage of giving 3 pin also increases, when the voltage of 3 pin reaches 1V, can force the pulsewidth of 6 pin to narrow down, output current is lowered, reach original set point, also promptly reach the constant current purpose.Must be pointed out that when output short circuit or error-polarity connection, the current-limiting resistance pressure drop meeting of source electrode far surpasses 1V, at this moment the output pulse width of 6 pin can become extremely narrow, finally can make output voltage, electric current all be in minimum value, has protected charger itself.When cell voltage rose to the 44.2V left and right sides, charger entered the constant voltage charge stage.The voltage that the charger output obtains must be strict controlled in about 1.3 times of batteries nominal voltage, and originally this part is mainly born by adjustable reference source TL431.When the output voltage of charger was higher, the control end voltage of TL431 was also higher, when height is some to certain, the signal amplitude of its output control is descended, thereby make the light-emitting diode brightening in the optocoupler, phototriode collector electrode control signal descends, and promptly the 1 pin current potential of UC3842 reduces.The modulation pulsewidth of 6 pin narrows down, and finally makes output voltage fall back to original numerical value, and charger enters the constant voltage charge stage, and electric current reduces gradually.When charging current was reduced to 200mA-300mA, the voltage at sample resistance two ends descended, and the 10 pin voltages of LM358 are lower than 9 pin, and 8 pin output LOW voltages extinguish red LED (charging).While 7 pin output HIGH voltages, this voltage one tunnel is lighted green LED, and another road arrives feedback circuit, and voltage is reduced.Charger enters the trickle charge stage.Finish after half an hour.
Testing circuit as shown in Figure 4, when charger is not inserting that storage battery and constant voltage charge stage, the later stage electric current reduced to a certain degree, the sample resistance both end voltage is low, LM324 the 8th pin output LOW voltage, this voltage signal is connected on OP07(to be used when voltage comparator herein) reverse input end, positive input ground connection.Because OP07 adds the 5V direct voltage, this moment, output can be exported a high level signal (acquiescence output supply voltage when OP07 is low at the input two ends) about 5V.With the P0.4 mouth of this high signal feedback to single-chip microcomputer, when single-chip microcomputer detects this signal, can automatically perform corresponding program, act on relay, and then cut off the charger cathode output end, realize correct charge protection and be full of automatic circuit break function.Consider battery aging and loss problem we to have set effective time be charging interval of 8 hours; if single-chip microcomputer does not detect the high signal of OP07 output in 8 hours; will carry out anti-overcharge defence program this moment; make relay cut off the cathode output end power supply, thereby effectively battery is protected.The spark that battery-end produces when inserting charging plug again in order to prevent to plug alternating current causes damage to battery, system also will be to first plug-in source plug, or first plug-in pond plug is judged, in the ban during the plug of plug-in source, charger is not worked, and OP07 is detected to be low level signal, and the output high level acts on the P0.0 mouth of single-chip microcomputer, and then effect relay cut-out forward output, storage battery is not charged.
Control circuit as shown in Figure 5, this module is come the folding of control relay to realize automatic circuit break function by single-chip microcomputer output high-low level.Relay is driven by two triodes 9014, and two triodes are connected on an end of relay, and another termination 5V DC power supply acts on the forward output of charger.P0.0 mouth output high-low level signal by single-chip microcomputer is controlled the break-make of triode to realize the folding of relay.
In order to satisfy the demand of different crowd to charging interval and charging modes, for example the somebody just wants to charge 2 hours or 3 hours no matter whether battery is full of, and we have set an automatic timing function, only battery is charged by the time of setting.This module detects button by the AT89S52 single-chip microcomputer and sets timing, carry out countdown procedure then, show instant numerical value by charactron simultaneously, the Single-chip Controlling relay cuts off the forward output when countdown stops, realize outage automatically, circuit as shown in Figure 6.Show that with mcu programming control charactron the Duan Xuan of charactron takies single-chip microcomputer P1 mouth, the position choosing takies the P3 mouth of single-chip microcomputer.The charging interval when showing automatic function in real time and the countdown time of timing function.
When being operated in automatic mode, the purpose of AT89S52 single-chip microcomputer is the outage automatically after being full of electricity of control battery, and AT89S52 single-chip microcomputer purpose is outage automatically after the time of setting finishes when being operated in timing mode.When battery charged with this intelligent charger, we can allow charger freely charge under unserviced situation, were full of the back and cut off charge power supply automatically, prevented accumulator super-charge.And use low-cost charactron to show the charging interval, show the time of charging in real time
Referring to Fig. 7, use flow process of the present utility model is: when beginning to charge, delayed time 3 seconds, single-chip microcomputer has judged whether that high signal sends into, if cut off output, charging finishes, if not, select working method, if select charging automatically, opening timing device 1, whether judge has high signal to send in 8 hours, if delay time half an hour the timeing closing device, cut off single chip computer AT 89S52 output, charging finishes; If not, directly cut off single chip computer AT 89S52 output, charging finishes.If select timing mode, opening timing device 2 is set the countdown time, and countdown finishes, the timeing closing device, and charging finishes.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model also is not limited only to above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also belong to protection range of the present utility model.
Claims (5)
1. an electric motor intelligent charger comprises charging circuit, it is characterized in that: described charging circuit connects control circuit and testing circuit, and described control circuit all is connected microcontroller with testing circuit, and described control circuit connects batteries.
2. according to the described electric motor intelligent charger of claim 1, it is characterized in that: described microcontroller connects display circuit and timing circuit.
3. according to the described charger of claim 1, it is characterized in that: described testing circuit comprises four-operational amplifier LM324 and voltage comparator OP07.
4. according to the described charger of claim 1, it is characterized in that: described control circuit comprises relay M and two triodes 9014.
5. according to the described charger of claim 1, it is characterized in that: described microcontroller is the AT89S52 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120167825 CN202034816U (en) | 2011-05-24 | 2011-05-24 | Intelligent charger for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120167825 CN202034816U (en) | 2011-05-24 | 2011-05-24 | Intelligent charger for electric bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN202034816U true CN202034816U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120167825 Expired - Fee Related CN202034816U (en) | 2011-05-24 | 2011-05-24 | Intelligent charger for electric bicycle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407713A (en) * | 2013-08-12 | 2013-11-27 | 广西森宝电动汽车制造有限公司 | Electric small refuse collector |
| CN103701180A (en) * | 2014-01-10 | 2014-04-02 | 济南大学 | Electric vehicle charging APO (Automatic Power Off) device |
| CN104362718A (en) * | 2014-10-14 | 2015-02-18 | 苏州克兰兹电子科技有限公司 | Charger for electric bicycle |
| CN104882916A (en) * | 2014-11-17 | 2015-09-02 | 苏州市职业大学 | Intelligent electric bicycle charger with reservation function |
| CN104931757A (en) * | 2015-05-05 | 2015-09-23 | 武汉振道世纪科技有限公司 | Electrombile intelligent charging measurement and control universal meter |
| CN111497666A (en) * | 2020-03-24 | 2020-08-07 | 宁波宇月汽车配件科技有限公司 | Control box capable of controlling charging time |
| CN111746316A (en) * | 2020-07-13 | 2020-10-09 | 徐州久胜电子科技有限公司 | Automatic power-off charger for electric vehicle |
-
2011
- 2011-05-24 CN CN 201120167825 patent/CN202034816U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407713A (en) * | 2013-08-12 | 2013-11-27 | 广西森宝电动汽车制造有限公司 | Electric small refuse collector |
| CN103407713B (en) * | 2013-08-12 | 2016-03-02 | 广西森宝电动汽车制造有限公司 | Electric small refuse collector |
| CN103701180A (en) * | 2014-01-10 | 2014-04-02 | 济南大学 | Electric vehicle charging APO (Automatic Power Off) device |
| CN104362718A (en) * | 2014-10-14 | 2015-02-18 | 苏州克兰兹电子科技有限公司 | Charger for electric bicycle |
| CN104362718B (en) * | 2014-10-14 | 2016-12-28 | 顾玉奎 | A kind of electric car charger |
| CN104882916A (en) * | 2014-11-17 | 2015-09-02 | 苏州市职业大学 | Intelligent electric bicycle charger with reservation function |
| CN104931757A (en) * | 2015-05-05 | 2015-09-23 | 武汉振道世纪科技有限公司 | Electrombile intelligent charging measurement and control universal meter |
| CN104931757B (en) * | 2015-05-05 | 2021-02-19 | 武汉振道世纪科技有限公司 | Wide area measurement and control intelligent charging calendar universal meter |
| CN111497666A (en) * | 2020-03-24 | 2020-08-07 | 宁波宇月汽车配件科技有限公司 | Control box capable of controlling charging time |
| CN111746316A (en) * | 2020-07-13 | 2020-10-09 | 徐州久胜电子科技有限公司 | Automatic power-off charger for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20130524 |