CN201312131Y - Cell phone charging circuit and cell phone battery charging system - Google Patents
Cell phone charging circuit and cell phone battery charging system Download PDFInfo
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- CN201312131Y CN201312131Y CNU200820154090XU CN200820154090U CN201312131Y CN 201312131 Y CN201312131 Y CN 201312131Y CN U200820154090X U CNU200820154090X U CN U200820154090XU CN 200820154090 U CN200820154090 U CN 200820154090U CN 201312131 Y CN201312131 Y CN 201312131Y
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- voltage comparison
- voltage
- charging
- cell phone
- comparison module
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Abstract
Disclosed are a cell phone charger capable of automatically cutting off power, a cell phone charging circuit and a cell phone battery charging system, wherein the cell phone battery charging system comprises a charger circuit and a cell phone charging circuit, the charger circuit comprises a voltage-current conversion module and a relay, the cell phone charging circuit comprises a charging control module and a first voltage comparison module, and a first voltage comparison value V1 is preset on the first voltage comparison module. When voltage of positive and negative poles of the cell phone battery is larger than or equal to V1, the relay can cut off power according to control signals from the cell phone charging circuit. After charging is completed, a circuit inside the charger does not contain any current even if the charger is still in plug connection with a power supply, thereby the waste of the electric energy of the charger can be avoided, electric energy can be saved, and users of the cell phone and the charger can plug the charger into the power supply at ease and pull the charger out of the power supply whenever in convenience even when the users are unaware of the charging time of the cell phone battery.
Description
Technical field
The utility model relates to a kind of cell phone charging circuit and batter-charghing system thereof.
Background technology
After the wasting of charger was meant that battery of mobile phone is filled, the voltage of battery can not increase again, and charger still is inserted in the power consumption on the power supply.
At present, mobile phone day by day becomes the necessity in people's daily life, the user generally can be inserted in charger during to cell-phone charging on the power supply and continue an evening or time half a day, and in fact cell-phone charging does not need the time so of a specified duration, has so just caused wasting of charger.According to investigations, in the whole life of mobile phone products, power consumption has 2/3rds to come from wasting of charger at present.
The patent No. is 200620117159.2, and name is called in the utility model patent specification of " intellectual charger for mobile phone ", discloses a kind of intellectual charger for mobile phone that can automatic shutoff circuit after mobile phone is finished the charging task.As shown in Figure 1, this intellectual charger for mobile phone is a switch 3 of serial connection and a time relay 1 between power input 8 of charger for mobile phone wiring board 6 and plug 4, another power input 9 of this charger for mobile phone wiring board 6 links to each other with another attaching plug 7 direct leads, at two inputs 8,9 of this charger for mobile phone wiring board 6 and a junction indicator light 2 in parallel of power supply two plugs 4,7, charger for mobile phone wiring board power output end 10,11 is connected with cell-phone charging jack-plug socket (not shown in figure 1) by lead 5.When this battery of mobile phone need charge, the needed time of preset charged on this time relay 1, when the default time expired, relay cut off the power supply automatically like this, and charger stops charging work, thereby prevents that charger from wasting.
Use this intellectual charger for mobile phone to prevent that charger from wasting, a prerequisite is arranged, promptly the user must know the needed time of this battery of mobile phone that is full of before charging.A new battery of mobile phone, can be consulted the product description of this mobile phone and determine to the needed charging interval of full state by spent condition.But, after battery uses a period of time, its by spent condition to the actual needed charging interval of full state may be with specification in time of indicating inconsistent; If just it is not charged when this battery of mobile phone uses spent condition, the time that this battery is full of just is difficult to determine more so.
The utility model content
The purpose of this utility model provides a kind of charging interval that do not need manually to set, and can cut off the power supply automatically after charging mobile phone battery finishes, thereby prevent cell phone charging circuit and the batter-charghing system thereof that charger wastes.
A kind of cell phone charging circuit comprises:
The charge control module that is connected with negative pole with the positive pole of battery of mobile phone, be used to receive the charging voltage and the charging current of the output of charger for mobile phone, charging to battery of mobile phone is controlled, magnitude of voltage V in charging process between the detection of handset positive and negative polarities, and output V to the first voltage comparison module;
Be preset with first voltage comparison module of the first voltage comparison value V1, the input of this first voltage comparison module is connected with described charge control module, be used to receive V, and V and V1 compared, as V during more than or equal to V1, this first voltage comparison module output disconnects the control signal of relay.
Further, also comprise second voltage comparison module that is preset with the second voltage comparison value V2, the input of this second voltage comparison module is connected with described charge control module, described charge control module is not when charging to battery of mobile phone, magnitude of voltage V between the detection of handset positive and negative polarities also exports V to described second voltage comparison module, described second voltage comparison module is V and V2 relatively, when V is less than or equal to V2, and the control signal of this second voltage comparison module output closing relay.
The utility model also provides a kind of cell phone battery charge system, comprises charger circuit and cell phone charging circuit, and described charger circuit comprises:
Be provided with the electric current and voltage modular converter of first input end, second input, be used for the voltage of first input end, the input of second input, charging voltage and charging current and the output that current conversion is battery of mobile phone;
Relay is serially connected with on the first input end or second input of described electric current and voltage modular converter, and the control end of this relay is used to receive the control signal with relay closes or disconnection that mobile phone sends;
The control end of described electric current and voltage modular converter output and described relay is connected with described cell phone charging circuit, and described cell phone charging circuit is used to send the control signal with relay closes or disconnection.
Further, described cell phone charging circuit specifically comprises:
The charge control module that is connected with negative pole with the positive pole of battery of mobile phone, be used to receive the charging voltage and the charging current of the output of charger for mobile phone, charging to battery of mobile phone is controlled, magnitude of voltage V in charging process between the detection of handset positive and negative polarities, and output V to the first voltage comparison module;
Be preset with first voltage comparison module of the first voltage comparison value V1, the input of this first voltage comparison module is connected with described charge control module, be used to receive V, and V and V1 compared, as V during more than or equal to V1, this first voltage comparison module output disconnects the control signal of relay.
Further, also comprise working station indicator, the two ends of described working station indicator are connected on the described first input end and second input.
Further, also comprise second voltage comparison module that is preset with the second voltage comparison value V2, the input of this second voltage comparison module is connected with described charge control module, described charge control module is not when charging to battery of mobile phone, magnitude of voltage V between the detection of handset positive and negative polarities also exports V to described second voltage comparison module, described second voltage comparison module is V and V2 relatively, when V is less than or equal to V2, and the control signal of this second voltage comparison module output closing relay.
Below with reference to the accompanying drawings and embodiment, further the utility model is described.
Description of drawings
Fig. 1 is called the electrical block diagram of " intellectual charger for mobile phone " for the name of describing in the background technology;
Fig. 2 is the utility model electrical block diagram.
Embodiment
Embodiment one
As shown in Figure 2, a kind of charger for mobile phone that can cut off the power supply automatically is characterized in that comprising:
Be provided with the electric current and voltage modular converter of first input end 211, second input 212, be used for the voltage of input, charging voltage and charging current and the output that current conversion is battery of mobile phone;
Wherein, also comprise working station indicator 23, the two ends of described working station indicator 23 are connected on the described first input end 211 and second input 212.This working station indicator 23 is a light-emitting diode.When described charger is in running order, this lumination of light emitting diode; When described charger was in non operating state, this light-emitting diode was for extinguishing state.
Wherein, also comprise first connector (not shown among Fig. 2), the output of described electric current and voltage modular converter 21 also is the output of described charger, be connected with this first connector lead, like this can be easily the output of described charger be connected with the charge control module 31 of cell phone charging circuit.
Wherein, the control end 221 of described relay 22 is connected with the first connector lead, can easily described control end 221 be connected with first voltage comparison module 331 and second voltage comparison module 332 of cell phone charging circuit like this.
Described first connector is USB small-sized (Mini) Type B 5 pin public access mouths.
Embodiment two
As shown in Figure 2, a kind of cell phone charging circuit comprises:
The charge control module 31 that is connected with negative pole with the positive pole of battery of mobile phone 32, be used to receive the charging voltage and the charging current of the output of charger for mobile phone, charging to battery of mobile phone 32 is controlled, in charging process (at this moment, relay closes) the magnitude of voltage V between the detection of handset positive and negative polarities, and output V to the first voltage comparison module 331;
Be preset with first voltage comparison module 331 of the first voltage comparison value V1, the input of this first voltage comparison module 331 is connected with described charge control module 31, be used to receive V, and V and V1 compared, as V during more than or equal to V1, these first voltage comparison module, 331 outputs disconnect the control signal of relays 22;
Wherein, also comprise second voltage comparison module 332 that is preset with the second voltage comparison value V2, the input of this second voltage comparison module 332 is connected with described charge control module 31, described charge control module 31 when battery of mobile phone 32 not being charged (at this moment, relay disconnects), magnitude of voltage V between the detection of handset positive and negative polarities also exports V to described second voltage comparison module 332, described second voltage comparison module 332 is V and V2 relatively, when V is less than or equal to V2, the control signal of these second voltage comparison module, 332 output closing relays 22.
Wherein, the maximum voltage of battery of mobile phone 32 after being full of under the state of battery performance the best is 4.20V, V1 is predeterminable be less than but near this maximum voltage value, default V1 is 4.18V in this embodiment, V2 is 4.10V.
Wherein, also comprise second connector (not output among Fig. 2), the port that described charge control module 31 is used to receive charging voltage and charging current is connected with described second connector, can easily described charge control module 31 be connected with the charger for mobile phone output like this.
Wherein, the output of the output of described first voltage comparison module 331 and second voltage comparison module 332 all is connected with described second connector, can easily first voltage comparison module 331 be connected with the control end 221 of charger repeat circuit with second voltage comparison module 332 like this.
Described second connector is USB small-sized (Mini) Type B 5 pin maternal interfaces, the use that matches with foregoing USB small-sized (Mini) Type B 5 pin public access mouths of this interface, and this connector volume is small and exquisite, the anti-mis-insertion better performances.
Embodiment three
As shown in Figure 2, a kind of cell phone battery charge system, comprise charger circuit 2 and cell phone charging circuit 3, described charger circuit 2 comprises as electric current and voltage modular converter 21, relay 22 described in the embodiment one, the control end 221 of described electric current and voltage modular converter 21 outputs and described relay 22 is connected with described cell phone charging circuit 3, and described cell phone charging circuit is used to send the control signal with relay 22 closures or disconnection;
Wherein, described cell phone charging circuit 3 comprises as charge control module 31, first voltage comparison module 331 described in the embodiment two;
Wherein, described charger circuit 2 also comprises as the working station indicator 23 described in the embodiment one;
Wherein, described cell phone charging circuit 3 also comprises as second voltage comparison module 332 described in the embodiment two.
When the charger for mobile phone that can cut off the power supply automatically, cell phone charging circuit and the cell phone battery charge system in using the foregoing description charges to battery of mobile phone, charger is connected being connected of the output of so just having realized electric current and voltage modular converter 21 and charge control module 31, the control end 221 of relay and being connected of first voltage comparison module 331 and second voltage comparison module 332 by USB small-sized (Mini) Type B 5 needle interfaces with cell phone charging circuit.With charger incoming transport power supply, this moment, relay 22 was a closure state, and the internal circuit of charger and cell phone charging circuit form the charge circuit of a closure, and this moment, charger was in running order, lumination of light emitting diode.After electric current and voltage modular converter 21 carries out the transformation rectification with the 220V alternating current, charging voltage and charging current are exported to charge control module 31, charge control module 31 is controlled battery of mobile phone on the one hand and is charged, magnitude of voltage V between the real-time on the one hand detection of handset battery positive and negative polarities, and V is sent to first voltage comparison module 331 judge whether it is greater than or equal to 4.18V, if then first voltage comparison module 331 can be sent control signal to the control end 221 of relay, relay 22 disconnects, then charge circuit is disconnected, charger is in non operating state, and light-emitting diode extinguishes.Like this, after charging finishes, charger is in non operating state, even charger still is plugged on the power supply, do not have electric current in the internal circuit of charger yet, thereby prevented the generation that charger wastes, saved electric energy, even what the user of mobile phone and charger did not know that the charging interval of battery of mobile phone also can be relieved is inserted in charger on the power supply, again it is extracted power supply when an opportunity arises.
When above-mentioned charging process finishes, charge control module 31 continues the magnitude of voltage V between the detection of handset battery positive and negative polarities, relay 22 disconnections this moment, charge control module 31 is in non-charged state, charge control module 31 sends to second voltage comparison module 332 with V and judges whether it is less than or equal to 4.10V, if then second voltage comparison module 332 can be sent control signal to the control end 221 of relay, relay 22 closures, then charge circuit is closed once more, charger is task again, lumination of light emitting diode is greater than or equal to 4.18V up to battery two pole tensions.Like this, after battery of mobile phone is filled, if charger still is plugged on the power supply, the voltage of battery of mobile phone positive and negative polarities will remain between 4.10V and the 4.18V always.
Claims (6)
1, a kind of cell phone charging circuit is characterized in that comprising:
The charge control module that is connected with negative pole with the positive pole of battery of mobile phone, be used to receive the charging voltage and the charging current of the output of charger for mobile phone, charging to battery of mobile phone is controlled, magnitude of voltage V in charging process between the detection of handset positive and negative polarities, and output V to the first voltage comparison module;
Be preset with first voltage comparison module of the first voltage comparison value V1, the input of this first voltage comparison module is connected with described charge control module, be used to receive V, and V and V1 compared, as V during more than or equal to V1, this first voltage comparison module output disconnects the control signal of relay.
2, cell phone charging circuit as claimed in claim 1, it is characterized in that: also comprise second voltage comparison module that is preset with the second voltage comparison value V2, the input of this second voltage comparison module is connected with described charge control module, described charge control module is not when charging to battery of mobile phone, magnitude of voltage V between the detection of handset positive and negative polarities also exports V to described second voltage comparison module, described second voltage comparison module is V and V2 relatively, when V is less than or equal to V2, the control signal of this second voltage comparison module output closing relay.
3, a kind of cell phone battery charge system is characterized in that comprising charger circuit and cell phone charging circuit, and described charger circuit comprises:
Be provided with the electric current and voltage modular converter of first input end, second input, be used for the voltage of first input end, the input of second input, charging voltage and charging current and the output that current conversion is battery of mobile phone;
Relay is serially connected with on the first input end or second input of described electric current and voltage modular converter, and the control end of this relay is used to receive the control signal with relay closes or disconnection that mobile phone sends;
The control end of described electric current and voltage modular converter output and described relay is connected with described cell phone charging circuit, and described cell phone charging circuit is used to send the control signal with relay closes or disconnection.
4, cell phone battery charge system as claimed in claim 3 is characterized in that described cell phone charging circuit specifically comprises:
The charge control module that is connected with negative pole with the positive pole of battery of mobile phone, be used to receive the charging voltage and the charging current of the output of charger for mobile phone, charging to battery of mobile phone is controlled, magnitude of voltage V in charging process between the detection of handset positive and negative polarities, and output V to the first voltage comparison module;
Be preset with first voltage comparison module of the first voltage comparison value V1, the input of this first voltage comparison module is connected with described charge control module, be used to receive V, and V and V1 compared, as V during more than or equal to V1, this first voltage comparison module output disconnects the control signal of relay.
5, cell phone battery charge system as claimed in claim 3 is characterized in that: also comprise working station indicator, the two ends of described working station indicator are connected on the described first input end and second input.
6, cell phone battery charge system as claimed in claim 4, it is characterized in that: also comprise second voltage comparison module that is preset with the second voltage comparison value V2, the input of this second voltage comparison module is connected with described charge control module, described charge control module is not when charging to battery of mobile phone, magnitude of voltage V between the detection of handset positive and negative polarities also exports V to described second voltage comparison module, described second voltage comparison module is V and V2 relatively, when V is less than or equal to V2, the control signal of this second voltage comparison module output closing relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820154090XU CN201312131Y (en) | 2008-10-16 | 2008-10-16 | Cell phone charging circuit and cell phone battery charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820154090XU CN201312131Y (en) | 2008-10-16 | 2008-10-16 | Cell phone charging circuit and cell phone battery charging system |
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| Publication Number | Publication Date |
|---|---|
| CN201312131Y true CN201312131Y (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820154090XU Expired - Lifetime CN201312131Y (en) | 2008-10-16 | 2008-10-16 | Cell phone charging circuit and cell phone battery charging system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931710A (en) * | 2012-11-22 | 2013-02-13 | 无锡中星微电子有限公司 | Charging circuit |
| CN104167790A (en) * | 2014-08-12 | 2014-11-26 | Tcl通讯（宁波）有限公司 | Charger and charging control system and method of mobile terminal |
| CN105048613A (en) * | 2015-09-02 | 2015-11-11 | 泉州市海通电子设备有限公司 | Electric vehicle intelligent charger |
| CN106451637A (en) * | 2016-11-03 | 2017-02-22 | 惠州Tcl移动通信有限公司 | Charge indicating lamp control method and system and mobile terminal |
| CN107171374A (en) * | 2016-03-08 | 2017-09-15 | 长沙恒凯电子科技有限公司 | A kind of charger |
| CN107769337A (en) * | 2017-12-05 | 2018-03-06 | 李国强 | A kind of intelligent charger |
| CN110336362A (en) * | 2019-08-20 | 2019-10-15 | 厦门大学嘉庚学院 | A kind of phone charger and its application method of self-test and protection |
-
2008
- 2008-10-16 CN CNU200820154090XU patent/CN201312131Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931710A (en) * | 2012-11-22 | 2013-02-13 | 无锡中星微电子有限公司 | Charging circuit |
| CN102931710B (en) * | 2012-11-22 | 2014-09-03 | 无锡中星微电子有限公司 | Charging circuit |
| CN104167790A (en) * | 2014-08-12 | 2014-11-26 | Tcl通讯（宁波）有限公司 | Charger and charging control system and method of mobile terminal |
| CN104167790B (en) * | 2014-08-12 | 2017-11-10 | Tcl通讯（宁波）有限公司 | The charge control system and its charge control method of charger, mobile terminal |
| CN105048613A (en) * | 2015-09-02 | 2015-11-11 | 泉州市海通电子设备有限公司 | Electric vehicle intelligent charger |
| CN107171374A (en) * | 2016-03-08 | 2017-09-15 | 长沙恒凯电子科技有限公司 | A kind of charger |
| CN106451637A (en) * | 2016-11-03 | 2017-02-22 | 惠州Tcl移动通信有限公司 | Charge indicating lamp control method and system and mobile terminal |
| CN107769337A (en) * | 2017-12-05 | 2018-03-06 | 李国强 | A kind of intelligent charger |
| CN110336362A (en) * | 2019-08-20 | 2019-10-15 | 厦门大学嘉庚学院 | A kind of phone charger and its application method of self-test and protection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20090916 |