CN104362712A - Automatic power-off charger for mobile phone - Google Patents
Automatic power-off charger for mobile phone Download PDFInfo
- Publication number
- CN104362712A CN104362712A CN201410728286.5A CN201410728286A CN104362712A CN 104362712 A CN104362712 A CN 104362712A CN 201410728286 A CN201410728286 A CN 201410728286A CN 104362712 A CN104362712 A CN 104362712A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- mobile phone
- rectification circuit
- emitting diode
- 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
- 239000003990 capacitor Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010295 mobile communication 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
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
- H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
-
- H02J7/027—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides an automatic power-off charger for a mobile phone, and belongs to the technical field of electronics. The charger comprises a DC voltage stabilizing circuit, a charging control circuit, an AC/DC electric power status indicating circuit and a filter circuit, wherein the DC voltage stabilizing circuit is connected with a 220V AC power supply and used for converting 220V AC to a 5V DC voltage output, the charging control circuit controls the charging and disconnecting of the mobile phone by controlling the on and off of a pair of contacts of an electromagnetic relay, so that the mobile phone battery can be automatically disconnected after being fully charged, and the AC/DC electric power status indicating circuit can give an AC/DC electric power status prompt; the filter circuit well filters the AC component in the output voltage of a rectifier circuit, thus obtaining a rather smooth DC voltage. The automatic power-off charger has the beneficial effect that after a mobile phone battery is fully charged, a charging circuit can be automatically disconnected, so the waste of electrical energy is avoided and a circuit reminding can be made after the charged battery is full of electricity.
Description
Technical field
The invention belongs to electronic technology field, especially relate to a kind of mobile phone auto-breaking charger.
Background technology
At present, along with the development of society, growth in the living standard, mobile communication has become the indispensable important tool of the whole mankind.Cellphone subscriber is after charging electricity to mobile phone for major part, for following the line of least resistance, does not extract attaching plug, to charge next time.This causes charger to be in Light Condition for a long time.In addition, cell-phone battery electric-charge quantity does not take off mobile phone after being full of and the situation making charger be in floating charge state also occurs often in time.In prior art, charger for mobile phone all contains high frequency transformer, and the former limit of high frequency transformer and AC power can form loop, therefore under above-mentioned Light Condition or floating charge state, all there is ferromagnetic loss in high frequency transformer, both power consumption caused waste, there is potential safety hazard again.
Summary of the invention
Object of the present invention, in order to avoid prior art Problems existing, can disconnect charging circuit after providing a kind of battery of mobile phone to be full of electricity automatically, saves the waste of electric energy and can make a kind of mobile phone auto-breaking charger of circuit prompting after electricity is full of.
Technical scheme of the present invention is: a kind of mobile phone auto-breaking charger, comprise direct current regulation circuit, charging control circuit, alterating and direct current power supply status indicating circuit and filter circuit, described direct current regulation circuit comprises power interface, transformer B and rectification circuit, described power interface is for accessing 220V AC power, transformer B high-pressure side is connected with power interface, and the low-pressure side of transformer B connects rectification circuit, and described rectification circuit output end exports 5V direct voltage;
Described charging control circuit comprises electromagnetic relay, resistance R2, light-emitting diode D3 and charging inlet, the output of one end access rectification circuit of the pair of contact of described electromagnetic relay, described electromagnetic relay other end connection is connected to charging inlet positive pole by contact resistance R2 and light-emitting diode D3, described charging inlet minus earth GND; Turned on and off by the pair of contact controlling described electromagnetic relay thus control to carry out charging to mobile phone and disconnect;
Described filter circuit comprises electrochemical capacitor C1 and electric capacity C2, described electrochemical capacitor C1 and electric capacity C2 one end are connected to rectification circuit output end, the other end is ground connection GND respectively, for the alternating component in filtering Output Voltage in Rectified Circuits, thus obtains smoother direct voltage;
Alterating and direct current power supply status indicating circuit comprises light-emitting diode D1, resistance R1, and the positive pole of described light-emitting diode D1 connects rectification circuit output end, and the negative pole of light-emitting diode D1 is by resistance R1 ground connection GND.
Further, also comprise and be full of indicating circuit, the described indicating circuit that is full of comprises three end Micro Energy Lose voltage detector IC, resistance R3, resistance R4, resistance R5 and light-emitting diode D2,2nd pin of one end of resistance R3 and a termination three end Micro Energy Lose voltage detector IC of resistance R4, another termination charging inlet positive pole of resistance R3, the other end of resistance R4 and the 3rd pin ground connection GND of three end Micro Energy Lose voltage detector IC, 1st pin of three end Micro Energy Lose voltage detector IC passes through the positive pole of resistance R5 sending and receiving optical diode D2, the minus earth GND of light-emitting diode D2.
Further, the positive pole of described rectification circuit output end is connected with circuit anode VCC, rectification circuit output end minus earth GND.
Further, the positive pole access rectification circuit output end of described electrochemical capacitor C1, the minus earth GND of described electrochemical capacitor C1.
Further, fuse FU is also connected with between described transformer B high-pressure side and power interface.
Further, described rectification circuit is made up of four diode D1-D4.
The advantage that the present invention has and good effect are: owing to adopting technique scheme, turned on and off by the pair of contact controlling described electromagnetic relay thus control to carry out charging to mobile phone and disconnect, achieve and can automatically disconnect after battery of mobile phone is full of electricity, saving the waste of electric energy and circuit prompting can be made after being full of electricity when battery of mobile phone, avoiding because input voltage instability damages the advantages such as charging circuit by being also connected with fuse FU between transformer B high-pressure side and power interface.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Shown in circuit theory diagrams as of the present invention in Fig. 1, a kind of mobile phone auto-breaking of the present invention charger, comprise direct current regulation circuit, charging control circuit, alterating and direct current power supply status indicating circuit and filter circuit, described direct current regulation circuit comprises power interface, transformer B and rectification circuit, described power interface is for accessing 220V AC power, transformer B high-pressure side is connected with power interface, fuse FU is also connected with between described transformer B high-pressure side and power interface, the low-pressure side of transformer B connects rectification circuit, described rectification circuit output end exports 5V direct voltage, the positive pole of described rectification circuit output end is connected with circuit anode VCC, rectification circuit output end minus earth GND.
Described charging control circuit comprises electromagnetic relay, resistance R2, light-emitting diode D3 and charging inlet, the output of one end access rectification circuit of the pair of contact of described electromagnetic relay, described electromagnetic relay other end connection is connected to charging inlet positive pole by contact resistance R2 and light-emitting diode D3, described charging inlet minus earth GND; Turned on and off by the pair of contact controlling described electromagnetic relay thus control to carry out charging to mobile phone and disconnect.
Described filter circuit comprises electrochemical capacitor C1 and electric capacity C2, described electrochemical capacitor C1 and electric capacity C2 one end are connected to rectification circuit output end, the other end is ground connection GND respectively, for the alternating component in filtering Output Voltage in Rectified Circuits, thus obtain smoother direct voltage, the positive pole access rectification circuit output end of described electrochemical capacitor C1, the minus earth GND of described electrochemical capacitor C1.
Alterating and direct current power supply status indicating circuit comprises light-emitting diode D1, resistance R1, and the positive pole of described light-emitting diode D1 connects rectification circuit output end, and the negative pole of light-emitting diode D1 is by resistance R1 ground connection GND.
Also comprise and be full of indicating circuit, the described indicating circuit that is full of comprises three end Micro Energy Lose voltage detector IC, resistance R3, resistance R4, resistance R5 and light-emitting diode D2,2nd pin of one end of resistance R3 and a termination three end Micro Energy Lose voltage detector IC of resistance R4, another termination charging inlet positive pole of resistance R3, the other end of resistance R4 and the 3rd pin ground connection GND of three end Micro Energy Lose voltage detector IC, 1st pin of three end Micro Energy Lose voltage detector IC passes through the positive pole of resistance R5 sending and receiving optical diode D2, the minus earth GND of light-emitting diode D2.
The course of work of this example: it is converted to 5V direct voltage output by transformer B and rectification circuit for the power interface access 220V AC power of described direct current regulation circuit, filter circuit electrochemical capacitor C1 and electric capacity C2, described electrochemical capacitor C1, its capacity is 1000 μ F, and described its capacity of electric capacity C2 is 3000 μ F, by the alternating component in filtering Output Voltage in Rectified Circuits, thus obtain smoother direct voltage output, manually one end of the pair of contact of electromagnetic relay is closed, it is made to be communicated with the output of rectification circuit, by current-limiting resistance R2, battery of mobile phone is charged, the resistance of R2 is 250 Ω, mobile phone auto-breaking charger is connected to 4.15V and is full of indicating circuit, the resistance of described resistance R3 is 220 ~ 390 Ω, the resistance of resistance R4 is 3.3K Ω, the resistance of resistance R5 is 270 Ω, when on charge circuit, lithium battery terminal voltage reaches 4.15V, 1st pin of three end Micro Energy Lose voltage detector IC exports high level, now high level lights light-emitting diode D6 by resistance R5, this shows that the crossing current charging of cellular li-ion battery terminates, three end Micro Energy Lose voltage detector IC select LM7806, if at this moment need to use mobile phone, use can be extracted, described light-emitting diode D6 can select redness or green.Next enter constant voltage charge, when constant voltage charge is close to when completing, the electric current in charging control circuit reduces greatly, until magnetic force is not enough to make armature adhesive, relay disconnects, and charges complete.Reach the object of saving a large amount of electric energy.Described alterating and direct current power supply status indicating circuit can be pointed out with alternating current-direct current operating state, if direct current regulation circuit normally carries out interchange and direct current is changed, light-emitting diode D5 lights, and represents that direct current regulation circuit is working properly.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (6)
1. a mobile phone auto-breaking charger, comprise direct current regulation circuit, charging control circuit, alterating and direct current power supply status indicating circuit and filter circuit, it is characterized in that: described direct current regulation circuit comprises power interface, transformer B and rectification circuit, described power interface is for accessing 220V AC power, transformer B high-pressure side is connected with power interface, and the low-pressure side of transformer B connects rectification circuit, and described rectification circuit output end exports 5V direct voltage;
Described charging control circuit comprises electromagnetic relay, resistance R2, light-emitting diode D3 and charging inlet, the output of one end access rectification circuit of the pair of contact of described electromagnetic relay, described electromagnetic relay other end connection is connected to charging inlet positive pole by contact resistance R2 and light-emitting diode D3, described charging inlet minus earth GND, is turned on and off by the pair of contact controlling described electromagnetic relay thus controls to carry out charging to mobile phone and disconnect;
Described filter circuit comprises electrochemical capacitor C1 and electric capacity C2, described electrochemical capacitor C1 and electric capacity C2 one end are connected to rectification circuit output end, the other end is ground connection GND respectively, for the alternating component in filtering Output Voltage in Rectified Circuits, thus obtains smoother direct voltage;
Alterating and direct current power supply status indicating circuit comprises light-emitting diode D1, resistance R1, and the positive pole of described light-emitting diode D1 connects rectification circuit output end, and the negative pole of light-emitting diode D1 is by resistance R1 ground connection GND.
2. a kind of mobile phone auto-breaking charger according to claim 1, it is characterized in that: also comprise and be full of indicating circuit, the described indicating circuit that is full of comprises three end Micro Energy Lose voltage detector IC, resistance R3, resistance R4, resistance R5 and light-emitting diode D2, 2nd pin of one end of resistance R3 and a termination three end Micro Energy Lose voltage detector IC of resistance R4, another termination charging inlet positive pole of resistance R3, the other end of resistance R4 and the 3rd pin ground connection GND of three end Micro Energy Lose voltage detector IC, 1st pin of three end Micro Energy Lose voltage detector IC passes through the positive pole of resistance R5 sending and receiving optical diode D2, the minus earth GND of light-emitting diode D2.
3. a kind of mobile phone auto-breaking charger according to claim 1, is characterized in that: the positive pole of described rectification circuit output end is connected with circuit anode VCC, rectification circuit output end minus earth GND.
4. a kind of mobile phone auto-breaking charger according to claim 1, is characterized in that: the positive pole access rectification circuit output end of described electrochemical capacitor C1, the minus earth GND of described electrochemical capacitor C1.
5. a kind of mobile phone auto-breaking charger according to claim 1, is characterized in that: be also connected with fuse FU between described transformer B high-pressure side and power interface.
6. a kind of mobile phone auto-breaking charger according to claim 1, is characterized in that: described rectification circuit is made up of four diode D1-D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728286.5A CN104362712A (en) | 2014-12-04 | 2014-12-04 | Automatic power-off charger for mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728286.5A CN104362712A (en) | 2014-12-04 | 2014-12-04 | Automatic power-off charger for mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104362712A true CN104362712A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410728286.5A Pending CN104362712A (en) | 2014-12-04 | 2014-12-04 | Automatic power-off charger for mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104362712A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832666A (en) * | 2018-03-09 | 2018-11-16 | 深圳市高胜科研电子有限公司 | A kind of detection device and power supply system of coffret |
| CN109585234A (en) * | 2019-01-25 | 2019-04-05 | 无锡凯绎科技有限公司 | A kind of control circuit of frame-type circuit breaker electric motor operating mechanism |
| CN112086311A (en) * | 2020-08-20 | 2020-12-15 | 吧安文案策划(温州)有限公司 | Full-charge automatic power-off device of lithium battery |
-
2014
- 2014-12-04 CN CN201410728286.5A patent/CN104362712A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832666A (en) * | 2018-03-09 | 2018-11-16 | 深圳市高胜科研电子有限公司 | A kind of detection device and power supply system of coffret |
| CN108832666B (en) * | 2018-03-09 | 2024-04-02 | 深圳立元微科技有限公司 | Detection device of transmission interface and power supply system |
| CN109585234A (en) * | 2019-01-25 | 2019-04-05 | 无锡凯绎科技有限公司 | A kind of control circuit of frame-type circuit breaker electric motor operating mechanism |
| CN112086311A (en) * | 2020-08-20 | 2020-12-15 | 吧安文案策划(温州)有限公司 | Full-charge automatic power-off device of lithium battery |
| CN112086311B (en) * | 2020-08-20 | 2021-08-20 | 王成 | Full-charge automatic power-off device of lithium battery |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |