CN107689644A - A kind of multifunctional charger - Google Patents
A kind of multifunctional charger Download PDFInfo
- Publication number
- CN107689644A CN107689644A CN201610632718.1A CN201610632718A CN107689644A CN 107689644 A CN107689644 A CN 107689644A CN 201610632718 A CN201610632718 A CN 201610632718A CN 107689644 A CN107689644 A CN 107689644A
- Authority
- CN
- China
- Prior art keywords
- circuit
- pulse width
- current
- width modulating
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- H02J7/045—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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- H02J2007/10—
Abstract
The invention discloses a kind of multifunctional charger, including switch transformer, the primary coil and secondary coil of switch transformer are all connected to current rectifying and wave filtering circuit, wherein the primary coil of switch transformer is controlled by a FET by pulse width modulating chip and turned on, the secondary coil of switch transformer is by voltage detecting circuit and current detection circuit detector output voltage and current signal, and pulse width modulating chip is connected by a feedback switch by a controller, described controller is connected to liquid crystal display.Pass through controller, it is possible to achieve in charging process, the real-time monitoring to charging current and voltage, and the required DC voltage stable with the cooperation common guarantee switch transformer output of pulse width modulating chip, additionally it is possible to decision circuitry is abnormal, ensures that circuit is safe for operation.
Description
Technical field
The invention belongs to charger field, more specifically to a kind of multifunctional charger.
Background technology
The larger battery charger of this volume of traditional charger, especially lead-acid accumulator, typically with instruction
Lamp represents the charged state of battery, and user can not intuitively see the progress of charging, while excessively simple in charger function,
The abnormal conditions occurred can not be also judged in charging process, for example contact bad caused unloaded phenomenon.
Therefore, Publication No. CN201682310U Chinese patent discloses a kind of LCD intelligent charging of electric car
Device, shows charging progress by liquid crystal apparatus, detects charging voltage and electric current, and charging process is controlled by feedback control circuit,
But disclosed scheme is also relatively simple, control is not accurate enough, and function is also more single.
The content of the invention
It is an object of the invention to provide a kind of multifunctional charger, can realize automatically controlling for charging process, control
Accurate and effective processed.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of multifunctional charger, including switch
Transformer, the primary coil of switch transformer are connected to mains supply, time of switch transformer by the first current rectifying and wave filtering circuit
Level coil exports DC charging current by the second current rectifying and wave filtering circuit, and the first described current rectifying and wave filtering circuit starts resistance through one
It is connected to pulse width modulating chip, primary coil of the pulse width modulating chip through a FET connecting valve transformer, described
Two current rectifying and wave filtering circuits are connected to voltage detecting circuit and current detection circuit, and voltage detecting circuit and current detection circuit liquid connect
A controller is connect, controller connects pulse width modulating chip by a feedback switch, and described controller is connected to liquid crystal display
Device.Charging current and voltage of the monitoring control devices in charging process, and opened according to charging current and voltage signal by feedback
Close control pulse width modulating chip and export corresponding pulse signal to control the conducting of FET and triggering, in this way, passing through control
The cooperation of device and pulse width modulating chip ensures that switch transformer can finally exist electric main by a series of rectification decompression
DC voltage required for output one, while can also judge that charging current and voltage are with controller in charging process
No exception, there is abnormal then stopping charging, protect whole circuit safety.
Preferably, described feedback switch is a photoelectrical coupler.Realize the control between different potential circuits.
Preferably, current feedback circuit is provided between described pulse width modulating chip and described FET.Enter one
Step ensures that pulse width modulating chip exports accurate pulse signal.
Preferably, described controller, which includes, is connected with each other control chip and memory, described control chip connects
Described voltage detecting circuit, current detection circuit and liquid crystal display are connect.Memory has preloaded control program.
Preferably, described control chip is connected to the temperature sensing circuit for detecting charger internal temperature.It is anti-
Only in charging process, if charger temperature is too high, stops charging, prevent from causing security incident.
Preferably, described control chip is connected to fan control circuitry control fan.Fan coordinates temperature detection electricity
Road, when charger internal temperature is too high, cool for charger.
After adopting the above technical scheme, the present invention has following outstanding advantages：Pass through controller, it is possible to achieve charging
Cheng Zhong, the real-time monitoring to charging current and voltage, and exported with the cooperation common guarantee switch transformer of pulse width modulating chip
Stable required DC voltage, additionally it is possible to which decision circuitry is abnormal, ensures that circuit is safe for operation；Temperature sensing circuit and wind are set
Fan, the situation of charger internal temperature can be handled, cooled for charger.
Brief description of the drawings
Fig. 1 is circuit structure block diagram of the present invention.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not form limitation of the invention.It is in addition, disclosed below
As long as each embodiment of the invention in involved technical characteristic do not form conflict can each other and be mutually combined.
As shown in figure 1, it is a kind of circuit structure block diagram of multifunctional charger of the present embodiment, including switch transformation
Device, the primary coil of switch transformer are connected to mains supply, the secondary wire of switch transformer by the first current rectifying and wave filtering circuit
Circle exports DC charging current by the output end of the second current rectifying and wave filtering circuit, and the first described current rectifying and wave filtering circuit starts through one
Resistance is connected to pulse width modulating chip, primary coil of the pulse width modulating chip through a FET connecting valve transformer, at this
In embodiment, model UC3842 current-control type pulse width modulating chip can be used, pulse width modulating chip can export pulse
Whether signal control direct drive FET turns on, so as to control opening with cutting to switch transformer circuit
Only, naturally it is also possible to realize same function (for example IGCT) by other electronic switches.In order to ensure pulsewidth modulation core
Piece exports accurate pulse signal, and current feedback electricity is provided between described pulse width modulating chip and described FET
Road, the pulse signal of the current signal adjustment output based on feedback.
The second described current rectifying and wave filtering circuit is connected to voltage detecting circuit and current detection circuit, voltage detecting circuit and
Current detection circuit liquid is connected to a controller, and described controller, which includes, is connected with each other control chip and memory, described
Memory preloaded control program, described control chip be connected to described voltage detecting circuit, current detection circuit and
Liquid crystal display, pulse width modulating chip is also connected by a feedback switch, in order to differential pressure be present due to the both sides for switching transformation,
Feedback switch described in the present embodiment is a photoelectrical coupler.The electricity provided based on voltage detecting circuit and current detection circuit
Pressure and current signal, control chip control pulse width modulating chip to export corresponding pulse signal and imitated come controlling filed by feedback switch
Should pipe conducting and triggering, in this way, ensureing that switch transformer will can exchange by the cooperation of controller and pulse width modulating chip
Civil power is depressured by a series of rectification and is finally exporting the DC voltage required for one, while can be controlled in charging process
Device processed can also judge whether charging current and voltage are abnormal, abnormal then stopping charging occurring, protect whole circuit safety.It is described
Liquid crystal display show in real time charging progress, facilitate user intuitively to check, can also remind whether user has abnormal conditions.
Described control chip is connected to the temperature sensing circuit for detecting charger internal temperature.And it is also connected with
Fan control circuitry controls fan.When the too high situation of temperature occurs in charger internal, fan coordinates temperature sensing circuit, stops
Only charge, cool for charger so that charger is in guard mode.
Embodiments of the present invention are explained in detail above in association with accompanying drawing, but the invention is not restricted to described implementation
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen within protection scope of the present invention.
Claims (5)
1. a kind of multifunctional charger, including switch transformer, the primary coil of switch transformer passes through the first rectifying and wave-filtering electricity
Road is connected to mains supply, and the secondary coil of switch transformer exports DC charging current by the second current rectifying and wave filtering circuit, its
It is characterised by：The first described current rectifying and wave filtering circuit is connected to pulse width modulating chip, pulse width modulating chip warp through a startup resistance
The primary coil of one FET connecting valve transformer, the second described current rectifying and wave filtering circuit be connected to voltage detecting circuit and
Current detection circuit, voltage detecting circuit and current detection circuit liquid are connected to a controller, and controller passes through a feedback switch
Pulse width modulating chip is connected, described controller is connected to liquid crystal display, and described feedback switch is a photoelectrical coupler.
2. multifunctional charger according to claim 1, it is characterised in that：Described pulse width modulating chip and described field
Current feedback circuit is provided between effect pipe.
3. multifunctional charger according to claim 1, it is characterised in that：Described controller includes interconnection control
Coremaking piece and memory, described control chip are connected to described voltage detecting circuit, current detection circuit and liquid crystal display
Device.
4. multifunctional charger according to claim 3, it is characterised in that：Described control chip is connected to for detecting
The temperature sensing circuit of charger internal temperature.
5. multifunctional charger according to claim 4, it is characterised in that：Described control chip is connected to fan control
Circuit controls fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632718.1A CN107689644A (en) | 2016-08-04 | 2016-08-04 | A kind of multifunctional charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632718.1A CN107689644A (en) | 2016-08-04 | 2016-08-04 | A kind of multifunctional charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107689644A true CN107689644A (en) | 2018-02-13 |
Family
ID=61151114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632718.1A Pending CN107689644A (en) | 2016-08-04 | 2016-08-04 | A kind of multifunctional charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107689644A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1622424A (en) * | 2003-11-28 | 2005-06-01 | 上海维华信息技术有限公司 | Charger |
| CN103337896A (en) * | 2013-07-16 | 2013-10-02 | 浙江湖州森富机电有限责任公司 | Intelligent charger |
| CN203326687U (en) * | 2013-07-16 | 2013-12-04 | 浙江湖州森富机电有限责任公司 | Intelligent charger |
-
2016
- 2016-08-04 CN CN201610632718.1A patent/CN107689644A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1622424A (en) * | 2003-11-28 | 2005-06-01 | 上海维华信息技术有限公司 | Charger |
| CN103337896A (en) * | 2013-07-16 | 2013-10-02 | 浙江湖州森富机电有限责任公司 | Intelligent charger |
| CN203326687U (en) * | 2013-07-16 | 2013-12-04 | 浙江湖州森富机电有限责任公司 | Intelligent charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180213 |
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| RJ01 | Rejection of invention patent application after publication |