CN103337896A - Intelligent charger - Google Patents
Intelligent charger Download PDFInfo
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- CN103337896A CN103337896A CN2013103014340A CN201310301434A CN103337896A CN 103337896 A CN103337896 A CN 103337896A CN 2013103014340 A CN2013103014340 A CN 2013103014340A CN 201310301434 A CN201310301434 A CN 201310301434A CN 103337896 A CN103337896 A CN 103337896A
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- circuit
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- controller
- intelligent charger
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Abstract
The invention discloses an intelligent charger which comprises a switching transformer, wherein both the primary coil and the secondary coil of the switching transformer are connected with a rectifying filter circuit; the primary coil of the switching transformer is controlled to be conducted by a pulse width modulation chip through a field effect transistor; the secondary coil of the switching transformer outputs voltage and current signals through a detector with a voltage detection circuit and a current detection circuit, and is connected with the pulse width modulation chip by a controller through a feedback switch; the controller is connected with a liquid crystal display device. Charging current and voltage can be monitored in a real time manner during charging by the controller; through the matching of the pulse width modulation chip, the switching transformer can output stable required DC voltage, and whether a circuit is abnormal can be judged so as to ensure safe running of the circuit.
Description
Technical field
The present invention relates to the charger technical field, especially a kind of charger that can the Based Intelligent Control charging process.
Background technology
Traditional charger, especially the bigger battery charger of this volume of lead acid accumulator, general all is the charged state of representing storage battery with indicator light, the user can't see the progress of charging intuitively, simultaneously too simple in charger function, in charging process, also can't judge the abnormal conditions of appearance, for example contact the bad unloaded phenomenon that causes.
For this reason, publication number is the liquid crystal display intelligent charger that the Chinese patent of CN201682310U discloses a kind of electric motor car, show the charging progress by liquid crystal apparatus, detect charging voltage and electric current, by feedback control circuit control charging process, but disclosed scheme is also comparatively simple, controls not accurate enoughly, and function is also more single.
Summary of the invention
The purpose of this invention is to provide a kind of intelligent charger, can realize the automatic control for charging process, precise control is effective.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of intelligent charger, comprise switch transformer, the primary coil of switch transformer is connected to mains supply by first current rectifying and wave filtering circuit, the secondary coil of switch transformer is by second current rectifying and wave filtering circuit output DC charging electric current, described first current rectifying and wave filtering circuit is connected to pulse width modulating chip through a starting resistance, pulse width modulating chip connects the primary coil of switch transformer through a field effect transistor, described second current rectifying and wave filtering circuit has connected voltage detecting circuit and current detection circuit, voltage detecting circuit has been connected a controller with current detection circuit liquid, controller connects pulse width modulating chip by a feedback switch, and described controller has connected LCD.Charging current and the voltage of monitoring control devices in charging process; and export conducting and the triggering that corresponding pulse signal is controlled field effect transistor according to charging current and voltage signal by feedback switch control pulse width modulating chip; so; cooperation by controller and pulse width modulating chip guarantees that switch transformer can be with a series of rectification step-down of electric main process at last at needed direct voltage of output; simultaneously can controller in charging process can also judge whether charging current and voltage is unusual; charging appears unusually then stopping, protection entire circuit safety.
As preferably, described feedback switch is a photoelectrical coupler.Realize the control between the different potential circuits.
As preferably, be provided with current feedback circuit between described pulse width modulating chip and the described field effect transistor.Guarantee that further pulse width modulating chip is exported pulse signal accurately.
As preferably, described controller has comprised and has interconnected control chip and memory that described control chip has connected described voltage detecting circuit, current detection circuit and LCD.The memory preload control program.
As preferably, described control chip has connected the temperature sensing circuit that is used for detecting the charger internal temperature.Prevent in charging process, if the charger temperature is too high, then stop charging, prevent from causing security incident.
As preferably, described control chip has connected fan control circuitry control fan.Fan cooperates temperature sensing circuit, when the charger internal temperature is too high, is the charger cooling.
After adopting technique scheme, the present invention has following outstanding advantage: pass through controller, can be implemented in the charging process, real-time monitoring to charging current and voltage, and with pulse width modulating chip cooperate the stable required direct voltage of common guarantee switch transformer output, can also decision circuitry unusual, guarantee the circuit security of operation; Temperature sensing circuit and fan are set, can handle the situation of charger internal temperature, be the charger cooling.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further:
Fig. 1 is circuit structure block diagram of the present invention.
Embodiment
As shown in Figure 1, circuit structure block diagram for a kind of intelligent charger of present embodiment, comprising switch transformer, the primary coil of switch transformer is connected to mains supply by first current rectifying and wave filtering circuit, the secondary coil of switch transformer is by the output output DC charging electric current of second current rectifying and wave filtering circuit, described first current rectifying and wave filtering circuit is connected to pulse width modulating chip through a starting resistance, pulse width modulating chip connects the primary coil of switch transformer through a field effect transistor, in the present embodiment, can adopt model is the current-control type pulse width modulating chip of UC3842, whether pulse width modulating chip can output pulse signal control directly drive the field effect transistor conducting, thereby control is opened and is ended switch transformer circuit, can certainly realize same function (for example thyristor) by other electronic switch.In order to guarantee that pulse width modulating chip exports pulse signal accurately, between described pulse width modulating chip and described field effect transistor, be provided with current feedback circuit, based on the pulse signal of the current signal adjustment output of feedback.
Described second current rectifying and wave filtering circuit has connected voltage detecting circuit and current detection circuit, voltage detecting circuit has been connected a controller with current detection circuit liquid, described controller has comprised and has interconnected control chip and memory, described memory preload control program, described control chip has connected described voltage detecting circuit, current detection circuit and LCD, also connect pulse width modulating chip by a feedback switch, for there is differential pressure in the both sides owing to the switch transformation, described feedback switch is a photoelectrical coupler in the present embodiment.The voltage and current signal that provides based on voltage detecting circuit and current detection circuit; control chip is exported conducting and the triggering that corresponding pulse signal is controlled field effect transistor by feedback switch control pulse width modulating chip; so; cooperation by controller and pulse width modulating chip guarantees that switch transformer can be with a series of rectification step-down of electric main process at last at needed direct voltage of output; simultaneously can controller in charging process can also judge whether charging current and voltage is unusual; charging appears unusually then stopping, protection entire circuit safety.The demonstration charging progress that described LCD is real-time makes things convenient for the user intuitively to check, also can remind the user whether abnormal conditions are arranged.
Described control chip has connected the temperature sensing circuit that is used for detecting the charger internal temperature.And connected fan control circuitry control fan.When condition of overhigh temperature appearred in charger inside, fan cooperated temperature sensing circuit, stopped charging, for the charger cooling, made charger be in guard mode.
Except above preferred embodiment, the present invention also has other execution mode, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (6)
1. intelligent charger, comprise switch transformer, the primary coil of switch transformer is connected to mains supply by first current rectifying and wave filtering circuit, the secondary coil of switch transformer is by second current rectifying and wave filtering circuit output DC charging electric current, it is characterized in that: described first current rectifying and wave filtering circuit is connected to pulse width modulating chip through a starting resistance, pulse width modulating chip connects the primary coil of switch transformer through a field effect transistor, described second current rectifying and wave filtering circuit has connected voltage detecting circuit and current detection circuit, voltage detecting circuit has been connected a controller with current detection circuit liquid, controller connects pulse width modulating chip by a feedback switch, and described controller has connected LCD.
2. intelligent charger according to claim 1, it is characterized in that: described feedback switch is a photoelectrical coupler.
3. intelligent charger according to claim 1 is characterized in that: be provided with current feedback circuit between described pulse width modulating chip and the described field effect transistor.
4. intelligent charger according to claim 1 is characterized in that: described controller has comprised and has interconnected control chip and memory that described control chip has connected described voltage detecting circuit, current detection circuit and LCD.
5. intelligent charger according to claim 4, it is characterized in that: described control chip has connected the temperature sensing circuit that is used for detecting the charger internal temperature.
6. intelligent charger according to claim 5 is characterized in that: described control chip has connected fan control circuitry control fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103014340A CN103337896A (en) | 2013-07-16 | 2013-07-16 | Intelligent charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103014340A CN103337896A (en) | 2013-07-16 | 2013-07-16 | Intelligent charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103337896A true CN103337896A (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103014340A Pending CN103337896A (en) | 2013-07-16 | 2013-07-16 | Intelligent charger |
Country Status (1)
| Country | Link |
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| CN (1) | CN103337896A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294165A (en) * | 2017-07-10 | 2017-10-24 | 成都壹启科技有限公司 | Pressure swing type power supply unit protects system |
| CN107689644A (en) * | 2016-08-04 | 2018-02-13 | 苏州迈力电器有限公司 | A kind of multifunctional charger |
| CN107728768A (en) * | 2017-10-14 | 2018-02-23 | 国家电网公司 | A kind of power adapter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783524A (en) * | 2009-12-25 | 2010-07-21 | 奇瑞汽车股份有限公司 | Vehicle-mounted lithium battery charger and charging control method thereof |
| CN201682310U (en) * | 2010-05-05 | 2010-12-22 | 朱长泉 | Liquid crystal display intelligent charger of electrocars |
| CN202503339U (en) * | 2012-03-20 | 2012-10-24 | 深圳霸特尔防爆科技有限公司 | Automatic charging control circuit of explosion-proof storage battery porter |
| CN202663614U (en) * | 2012-06-27 | 2013-01-09 | 深圳市大族元亨光电股份有限公司 | Low-power light emitting diode (LED) constant-current power supply |
| CN203326687U (en) * | 2013-07-16 | 2013-12-04 | 浙江湖州森富机电有限责任公司 | Intelligent charger |
-
2013
- 2013-07-16 CN CN2013103014340A patent/CN103337896A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783524A (en) * | 2009-12-25 | 2010-07-21 | 奇瑞汽车股份有限公司 | Vehicle-mounted lithium battery charger and charging control method thereof |
| CN201682310U (en) * | 2010-05-05 | 2010-12-22 | 朱长泉 | Liquid crystal display intelligent charger of electrocars |
| CN202503339U (en) * | 2012-03-20 | 2012-10-24 | 深圳霸特尔防爆科技有限公司 | Automatic charging control circuit of explosion-proof storage battery porter |
| CN202663614U (en) * | 2012-06-27 | 2013-01-09 | 深圳市大族元亨光电股份有限公司 | Low-power light emitting diode (LED) constant-current power supply |
| CN203326687U (en) * | 2013-07-16 | 2013-12-04 | 浙江湖州森富机电有限责任公司 | Intelligent charger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107689644A (en) * | 2016-08-04 | 2018-02-13 | 苏州迈力电器有限公司 | A kind of multifunctional charger |
| CN107294165A (en) * | 2017-07-10 | 2017-10-24 | 成都壹启科技有限公司 | Pressure swing type power supply unit protects system |
| CN107728768A (en) * | 2017-10-14 | 2018-02-23 | 国家电网公司 | A kind of power adapter |
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Application publication date: 20131002 |