CN2766434Y - Handset charge protection timer - Google Patents
Handset charge protection timer Download PDFInfo
- Publication number
- CN2766434Y CN2766434Y CN 200420118964 CN200420118964U CN2766434Y CN 2766434 Y CN2766434 Y CN 2766434Y CN 200420118964 CN200420118964 CN 200420118964 CN 200420118964 U CN200420118964 U CN 200420118964U CN 2766434 Y CN2766434 Y CN 2766434Y
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- Prior art keywords
- resistance
- pin
- contact
- circuit
- bridge rectifier
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- Expired - Fee Related
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Abstract
The utility model discloses a mobile phone charging and protecting timer, which comprises a machine shell, wherein an overvoltage protecting circuit, a rectifying circuit, a wave filtering circuit and a timing circuit are arranged in the machine shell. When the input voltage of alternating current is too high, the overvoltage protecting circuit cuts off the electricity supply of the timer to protect a charger and a communication tool. In the timing circuit, an integrated block CD4060 is a 14-stage frequency divider with an oscillator. By controlling a gear of a gear switch K1 < 1 >, charging time can automatically set, and through a select switch K2 < 2 >, the gear of time of is changed to adapt to the charge of different mobile phones. The mobile phone charging and protecting timer which the utility model relates to is used has the advantages of safety and convenience, can automatically select charging time and realizes that the charge of the mobile phone carries out automatic protection. The service life of a cell can be effectively be prolonged, the occurrence of an accident is avoided, and the utility model can be used for the mobile phone, an interphone, a smart phone and other electrical equipment.
Description
(1), technical field:
The utility model belongs to electronic installation, relates in particular to a kind of cell-phone charging protection timer.
(2), background technology:
At present domestic have ten thousand Personal Handyphone System users more than cellphone subscriber more than 300,000,000 and 6,000, and all increasing progressively every year, but when a lot of human chargers are given charging mobile phone battery, always like being selected in going out, the working or carry out in bed evening, think and to economize energy like this and save time, really do not know, the long-time like this cell-phone charging of giving can influence useful life of battery of mobile phone first, in addition since some charger quality do not pass a test or design unreasonable, perhaps battery is of poor quality, perhaps line voltage is too high, and long-time charging can cause charger or battery temperature is too high and spontaneous combustion is on fire, gently then burns out charger or battery, initiation fire when serious, and cause heavy losses.
(3), summary of the invention:
The purpose of this utility model is to provide a kind of cell-phone charging protection timer, and it adopts digital integrated circuit, and is simple in structure, safe and convenient to use, can the free charging interval, under overvoltage, overcurrent condition, can protect automatically.
For achieving the above object, the technical solution of the utility model is:
It comprises casing, power input plug and power output socket; be provided with overvoltage crowbar, rectification circuit, filter circuit and timing circuit in the casing; said overvoltage crowbar is serially connected in 220V input voltage two ends by fuse BX and piezo-resistance RY to be formed, and an end of input voltage is through R of fuse BX serial connection
1, C
1Behind the reduction voltage circuit that composes in parallel, again with D
2～D
5 Bridge rectifier contact 1 join, bridge rectifier contact 2 passes through resistance R again
3Link to each other with the other end of input voltage: said filter circuit is by capacitor C
2, resistance R
4, capacitor C
3, C
4, resistance R
5Form C
2With R
4, C
3Be attempted by between bridge rectifier contact 3 and the contact 4 electrochemical capacitor C after being in parallel
4And resistance R
5Be serially connected between bridge rectifier contact 3 and the contact 4, between the contact 3 of bridge rectifier and contact 4, also be connected with voltage stabilizing didoe D
6
Be connected to a timing circuit behind filter circuit, timing circuit is by integrated package CD4060, relay J, triode VT and driving switch K
1Deng composition, 12 pin of integrated package CD4060 and the electrochemical capacitor C4 negative pole in the filter circuit join, and 8 pin link to each other with the contact 3 of bridge rectifier, are serially connected with resistance R between the contact 4 of 9 pin and bridge rectifier
6With light-emitting diode D
7, 9 pin and capacitor C
5, 10 pin and resistance R
8, 11 pin and resistance R
7An end join capacitor C
5, resistance R
7, R
8The other end connect together, contact 4 short circuits of 16 pin of integrated package CD4060 and bridge rectifier, 7 pin, 1 pin, 2 pin, 3 pin respectively with driving switch K
10 grade, I shelves, II shelves, III shelves corresponding contacts short circuit, be connected in series diode D between the base stage of 11 pin and triode VT
8And resistance R
10, the base stage of triode VT is by base resistance R
10With driving switch K
1Link to each other, emitter links to each other with 8 pin of integrated package CD4060, is serially connected with relay J and resistance R between 16 pin of collector electrode and integrated package
11, electrochemical capacitor C
6Be attempted by resistance R
11Two ends, diode D
9Be attempted by the coil two ends of relay J; The input live wire of the contact of relay J and 220V joins, and corresponding another contact with it links to each other with 220V output live wire, is connected in series a light-emitting diode D at the two ends of output voltage 220V
1And resistance R
2
10 pin and resistance R at said integrated package CD4060
8Between the series connection resistance R
9, and in resistance R
9Two ends selector switch K in parallel
2
In technique scheme; owing to be provided with overvoltage crowbar and timing circuit in the cell-phone charging protection timer of the present utility model; like this; when AC-input voltage is higher than 270V; piezo-resistance RY punctures; cause fuse BX to blow, cut off the power supply of timer, thereby protected charger and communication tool because of overcurrent.In timing circuit, integrated package CD4060 is 14 grades of frequency dividers of a band oscillating circuit, by control driving switch K
1Gear, can set up on their own the charging interval.In addition by selector switch K
2Can change the gear of time, to adapt to different cell-phone chargings.A kind of cell-phone charging of the utility model protection timer, safe ready can the free charging interval, can realize the automatic protection of cell-phone charging under the situation of overvoltage or overcurrent, can effectively prolong the useful life of battery, has avoided the generation of security incident.
(4), description of drawings:
Fig. 1 is the contour structures schematic diagram of the utility model cell-phone charging protection timer;
Fig. 2 is the circuit theory diagrams of the utility model cell-phone charging protection timer.
(5), embodiment:
Below in conjunction with accompanying drawing the utility model cell-phone charging protection timer is described in further detail:
As seen from Figure 1, present embodiment comprises the casing 1 of cell-phone charging protection timer, the plug 2 and the 220V power output socket 3 of 220V power supply input, and the surface of casing 1 is provided with regularly driving switch K
1, selector switch K
2And indicator light D
1And D
2
Fig. 2 is the circuit theory diagrams of the utility model cell-phone charging protection timer; comprise overvoltage crowbar, rectification circuit, filter circuit and timing circuit; overvoltage crowbar is serially connected in 220V input voltage two ends by fuse BX and piezo-resistance RY to be formed, and an end of input voltage is through R of fuse BX serial connection
1, C
1Behind the reduction voltage circuit that composes in parallel, again with D
2～D
5 Bridge rectifier contact 1 join, bridge rectifier contact 2 passes through resistance R again
3Link to each other with the other end of input voltage; Filter circuit is by capacitor C
2, resistance R
4, capacitor C
3, C
4, resistance R
5Form C
2With R
4, C
3Be attempted by between bridge rectifier contact 3 and the contact 4 electrochemical capacitor C after being in parallel
4And resistance R
5Be serially connected between bridge rectifier contact 3 and the contact 4, between the contact 3 of bridge rectifier and contact 4, also be connected with voltage stabilizing didoe D
6, the voltage of supplying with timing circuit is stabilized in about 10V;
Be connected to a timing circuit behind filter circuit, timing circuit is by integrated package CD4060, relay J, triode VT and driving switch K
1Deng composition, 12 pin of integrated package CD4060 and the electrochemical capacitor C4 negative pole in the filter circuit join, and 8 pin link to each other with the contact 3 of bridge rectifier, are serially connected with resistance R between the contact 4 of 9 pin and bridge rectifier
6With light-emitting diode D
7, 9 pin and capacitor C
5An end join 10 pin and resistance R
8An end join 11 pin and resistance R
7An end join capacitor C
5, resistance R
7, R
8The other end connect together, contact 4 short circuits of 16 pin of integrated package CD4060 and bridge rectifier, 7 pin, 1 pin, 2 pin, 3 pin respectively with driving switch K
10 grade, I shelves, II shelves, III shelves corresponding contacts short circuit, be connected in series diode D between the base stage of 11 pin and triode VT
8And resistance R
10, the base stage of triode VT is by base resistance R
10With driving switch K
1Link to each other, emitter links to each other with 8 pin of integrated package CD4060, is serially connected with relay J and resistance R between 16 pin of collector electrode and integrated package
11, electrochemical capacitor C
6Be attempted by resistance R
11Two ends, diode D
9Be attempted by the coil two ends of relay J; The input live wire of the contact of relay J and 220V joins, and corresponding another contact with it links to each other with 220V output live wire, is connected in series a light-emitting diode D at the two ends of output voltage 220V
1And resistance R
2
In the present embodiment, at 10 pin and the R of integrated package CD4060
8Between the series connection resistance R
9, and in resistance R
9Two ends selector switch K in parallel
2
The operation principle of the utility model cell-phone charging protection timer is:
One, overvoltage crowbar: be made up of piezo-resistance RY and fuse BX, when AC-input voltage was lower than 270V, piezo-resistance RY was open-circuit condition.When input ac voltage was higher than 270V, piezo-resistance RY punctured, and causes fuse to blow because of overcurrent, has cut off the power supply of timer, and timer is not worked because of there being power supply, and has protected charger and communication tool.In addition, when the charging interval of charger was long, along with the transformer temperature coefficient in the charger is too high, puncturing or short circuit between line may appear in transformer, and transformer current is excessive simultaneously, causes blowout, cuts off power supply, in order to avoid accidents caused.
Two, timing circuit: regularly core integrated package CD4060 is 14 grades of frequency dividers of a band oscillator, and frequency of oscillation is by the R that is connected on outward on 9,10 pin
8, C
5The parameter decision.When input was switched on, 220V voltage was through C
1, D
2～D
5Step-down rectifier, C
2Filtering is by voltage stabilizing didoe D
6Voltage is stabilized in about 10V; The moment of energized is by C
4, R
5Produce a high level, make the internal counter zero clearing of integrated package CD4060, D
7One dodges one goes out, and picks up counting to show integrated package CD4060.In this circuit, from 7 pin of integrated package CD4060,1 pin, 2 pin, the output of 3 pin as regularly selecting shelves, so the timing self check be 0 grade 12 seconds, the I shelves are 45 minutes, the II shelves are 90 minutes, the III shelves are 180 minutes; After timing was arrived, integrated package CD4060 exported high level, made triode VT saturated, the tripping of relay J contact, and 220V out-put supply socket 3 does not have electricity, power supply indication D
1Do not work, the high level of integrated package CD4060 passes through D simultaneously
8Make integrated package CD4060 failure of oscillation, 9 pin high level make timing indication D
7Extinguish, so once regularly finish.During debugging, as long as change R
8Resistance, after " I " shelves time determined, other second gear was also just fixed.In order to make the user select the charging interval easily, at 10 pin and the R of integrated package CD4060
8Between the series connection resistance R
9, and in resistance R
9Two ends selector switch K in parallel
2, by selector switch K
2Can make the gear of regulating the charging interval increase to eight grades, comprise six free charging timings and two zero span timer-controlled self-inspection functions by fourth gear.When selecting K switch
2During disconnection, the 10 pin resistance of integrated package CD4060 increase, and each grade timing increases simultaneously, when selecting K switch
2When closed, the 10 pin resistance of integrated package CD4060 reduce, and each grade timing reduces simultaneously.If change capacitor C
5Capacity, can change the long delay time, to adapt to different purposes.Certainly serve as the designed various circuit protection timers in basis and the circuit protection timing device of other form with the utility model basic circuit, all belong to the scope of the utility model protection.
During use, only need charger for mobile phone is inserted on the 220V out-put supply socket 3 of this cell-phone charging protection timer and get final product.This charge protection timer on being used in mobile phone, also can be used for intercom, Personal Handyphone System and various electric equipment.In the present embodiment, be that lead-in wire is connected on the normally closed type contact of relay J, so being called, this timer decides pass formula timer.Change into when deciding the open type timer as need, then only need lead-in wire is connected on the contact open in usual of relay J and get final product.In the circuit of Fig. 2, be single timing, after just once regularly finishing, relay J is no longer moved, and resets after outage.Be that this circuit is a power-off restoration, once regularly finish the back, its attaching plug 2 dial-outs should be re-used after about 5 seconds as re-using.
Claims (2)
1, a kind of charge protection timer comprises casing (1), power input plug (2) and power output socket (3), and casing is provided with overvoltage crowbar, rectification circuit, filter circuit and timing circuit in (1), it is characterized in that:
Said overvoltage crowbar is serially connected in 220V input voltage two ends by fuse BX and piezo-resistance RY to be formed, and an end of input voltage is through R of fuse BX serial connection
1, C
1Behind the reduction voltage circuit that composes in parallel, again with D
2～D
5Bridge rectifier contact 1 join, bridge rectifier contact 2 passes through resistance R again
3Link to each other with the other end of input voltage; Said filter circuit is by capacitor C
2, resistance R
4, capacitor C
3, C
4, resistance R
5Form C
2With R
4, C
3Be connected between bridge rectifier contact 3 and the contact 4 electrochemical capacitor C after the parallel connection
4And resistance R
5Be serially connected between bridge rectifier contact 3 and the contact 4, between the contact 3 of bridge rectifier and contact 4, also be connected with voltage stabilizing didoe D
6
Be connected to a timing circuit behind filter circuit, timing circuit is by integrated package CD4060, relay J, triode VT and driving switch K
1Deng composition, 12 pin of integrated package CD4060 and the electrochemical capacitor C4 negative pole in the filter circuit join, and 8 pin link to each other with the contact 3 of bridge rectifier, are serially connected with resistance R between the contact 4 of 9 pin and bridge rectifier
6With light-emitting diode D
7, 9 pin and capacitor C
5, 10 pin and resistance R
8, 11 pin and resistance R
7An end join capacitor C
5, resistance R
7, R
8The other end connect together, contact 4 short circuits of 16 pin of integrated package CD4060 and bridge rectifier, 7 pin, 1 pin, 2 pin, 3 pin respectively with driving switch K
10 grade, I shelves, II shelves, the corresponding contact of III shelves short circuit, be connected in series diode D between the base stage of 11 pin and triode VT
8And resistance R
10, the base stage of triode VT is by base resistance R
10With driving switch K
1Link to each other, emitter links to each other with 8 pin of integrated package CD4060, is serially connected with relay J and resistance R between 16 pin of collector electrode and integrated package
11, electrochemical capacitor C
6Be attempted by resistance R
11Two ends, diode D
9Be attempted by the coil two ends of relay J; The input live wire of the contact of relay J and 220V joins, and corresponding another contact with it links to each other with 220V output live wire, is connected in series a light-emitting diode D at the two ends of output voltage 220V
1And resistance R
2
2, a kind of cell-phone charging protection timer according to claim 1 is characterized in that: in 10 pin and the resistance R of said integrated package CD4060
8Between the series connection resistance R
9, and in resistance R
9Two ends selector switch K in parallel
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118964 CN2766434Y (en) | 2004-12-17 | 2004-12-17 | Handset charge protection timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118964 CN2766434Y (en) | 2004-12-17 | 2004-12-17 | Handset charge protection timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2766434Y true CN2766434Y (en) | 2006-03-22 |
Family
ID=36607071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118964 Expired - Fee Related CN2766434Y (en) | 2004-12-17 | 2004-12-17 | Handset charge protection timer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2766434Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163866A (en) * | 2011-05-11 | 2011-08-24 | 袁传森 | Mobile phone battery charger capable of timing |
| CN101829826B (en) * | 2010-05-14 | 2012-11-14 | 惠州Tcl移动通信有限公司 | Manual welding reminding device for soldering iron |
| CN103326450A (en) * | 2012-03-20 | 2013-09-25 | 海洋王（东莞）照明科技有限公司 | Charge control circuit |
-
2004
- 2004-12-17 CN CN 200420118964 patent/CN2766434Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829826B (en) * | 2010-05-14 | 2012-11-14 | 惠州Tcl移动通信有限公司 | Manual welding reminding device for soldering iron |
| CN102163866A (en) * | 2011-05-11 | 2011-08-24 | 袁传森 | Mobile phone battery charger capable of timing |
| CN103326450A (en) * | 2012-03-20 | 2013-09-25 | 海洋王（东莞）照明科技有限公司 | Charge control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |