CN202261422U - Mobile phone - Google Patents
Mobile phone Download PDFInfo
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- CN202261422U CN202261422U CN2011203243581U CN201120324358U CN202261422U CN 202261422 U CN202261422 U CN 202261422U CN 2011203243581 U CN2011203243581 U CN 2011203243581U CN 201120324358 U CN201120324358 U CN 201120324358U CN 202261422 U CN202261422 U CN 202261422U
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- mobile phone
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Abstract
The utility model discloses a mobile phone which comprises a DC/DC module and a USB output interface, wherein the DC/DC module is connected with battery voltage of the mobile phone, is used for converting the battery voltage of the mobile phone to charging voltage and comprises an inductor, a diode and a DC/DC controller, the first end of the inductor is connected with the battery voltage, the second end of the inductor is connected with the anode of the diode, the DC/DC controller comprises a power input pin, an enabling pin and a control output pin, the power input pin is connected with the battery voltage of the mobile phone, the enabling pin is connected between the power input pin and the battery voltage of the mobile phone, the control output pin is connected between the second end of the inductor and the anode of the diode and used for controlling inductance storage and energy release, and the USB output interface comprises a charging output pin which is connected with the cathode of the diode, is used for acquiring the charging voltage output by the DC/DC module and supplies the charging voltage to equipment to be charged. Through the ways, with the adoption of the utility model, small battery equipment can be charged with the using of the mobile phone at any time.
Description
Technical field
The utility model relates to mobile communication terminal field, particularly relates to a kind of mobile phone.
Background technology
Along with science and technology development, the function of mobile phone is more and more, and its employed accessory is also more and more important.Bluetooth become one of mobile phone must configuration function, and bluetooth cellular phone accessory bluetooth earphone commonly used brings a lot of convenience to the user, because use bluetooth earphone no longer to be limited by the length restriction of the earphone cord of traditional wired earphone.But bluetooth earphone need charge and could use, and existing bluetooth earphone all can not show battery electric quantity mostly, and the user is difficult to know how many bluetooth earphones also has.If bluetooth earphone has not had electricity in the time of out of doors, that wants to use bluetooth earphone just can only look for a place to be charging bluetooth earphone, and this brings some inconvenience for use of bluetooth earphone.
In view of this, be necessary to propose a kind of mobile phone that can charge for small amount battery apparatus such as bluetooth earphones at any time.
The utility model content
The technical problem that the utility model mainly solves provides a kind of mobile phone, can solve the problem that small amount battery apparatus such as bluetooth earphone can not charge at any time.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of mobile phone is provided, comprises DC/DC module and USB output interface.The DC/DC module is connected with the cell voltage of this mobile phone, is used for converting the cell voltage of mobile phone to charging voltage, comprises inductance, diode, first electric capacity and DC/DC controller.First end of this inductance is connected with this cell voltage, and second end of this inductance is connected with the positive pole of this diode.This DC/DC controller comprises power supply input pin, enable and control output pin.The power supply input pin is connected with this cell voltage.Enable is connected between the cell voltage of this power supply input pin and this mobile phone.The control output pin is connected between the positive pole of second end and this diode of this inductance, controls this inductance stored energy and releases energy.The USB output interface comprises the charging output pin, and this charging output pin is connected with the negative pole of this diode, obtains this charging voltage of this DC/DC module output, and offers equipment to be charged.This first electric capacity, one end is connected between this charging output pin of negative pole and this USB output interface of this diode, the other end ground connection of this first electric capacity,
Wherein, this USB output interface is a standard USB output interface.
Wherein, this USB output interface further comprises the correction data wire pin, with the negative data wire pin of this correction data wire pin short circuit, and this USB grounding pin of ground connection.
Wherein, this mobile phone further comprises resistance, switching tube and baseband chip.First end of resistance is connected between this power supply input pin and this cell voltage, and second end connects this enable.First end of switching tube is connected between this resistance and this enable, the second end ground connection.Baseband chip connects the 3rd end of this switching tube.Wherein, the conducting when the 3rd end input high level of this switching tube is turn-offed during input low level.
Wherein, the charging voltage of this DC/DC module converts is 5V, and output current is 100mA.
Wherein, this mobile phone further comprises second electric capacity, and first end of this second electric capacity is connected between the cell voltage and this DC/DC module of this mobile phone, the other end ground connection of this second electric capacity.
Wherein, this DC/DC controller further comprises feedback pin and grounding pin.Feedback pin is connected between this charging output pin of this diode and this USB output interface, this grounding pin ground connection.
Wherein, this control output pin and this grounding pin discontinuity conducting.
Wherein, this equipment to be charged is bluetooth earphone, mp3, mp4 or mobile phone.
The beneficial effect of the utility model is: the situation that is different from prior art; The mobile phone of the utility model converts cell voltage into through the DC/DC module charging voltage of small amount battery apparatus; And charge for the small amount battery apparatus by the USB output interface of mobile phone; The small amount battery apparatus can be charged at any time, and must not receive site limitation.
Description of drawings
Fig. 1 is the circuit diagram of a preferred embodiment of the mobile phone of the utility model.
Embodiment
Consult Fig. 1, Fig. 1 is the circuit diagram of a preferred embodiment of the mobile phone of the utility model.In the present embodiment, mobile phone comprises DC/DC module 10, USB output interface 20, baseband chip J, switching tube Q1, resistance R 1 and second capacitor C 2.
DC/DC module 10 connects the cell voltage VBAT of mobile phone, is used for converting the cell voltage VBAT of mobile phone to charging voltage.In the present embodiment, cell voltage VBAT is converted to the charging voltage of bluetooth earphone.DC/DC module 10 specifically comprises inductance L 1, diode D1, first capacitor C 1 and DC/DC controller.First end of inductance L 1 is connected with cell voltage VBAT, and second end of inductance L 1 is connected with the positive pole of diode D1.The negative pole of diode D1 is connected with USB output interface 20.First capacitor C, 1 one ends are connected between the charging output pin CHG_OUT of negative pole and USB output interface 20 of diode D1, and the other end ground connection of first capacitor C 1 is used for the voltage of output is carried out filtering.
The DC/DC controller comprises power supply input pin VDD, enable EN, control output pin LX, feedback pin FB and grounding pin GND1.Power supply input pin VDD connects cell voltage VBAT, so that the DC/DC controller carries out work.Enable EN is connected between the cell voltage VBAT of power supply input pin VDD and mobile phone, be used to control DC control module whether work.Between second end that control output pin LX is connected in inductance L 1 and the positive pole of diode D1, export charging voltage.Grounding pin GND1 ground connection, under the control of DC/DC controller, control output pin LX intermittent conduction grounding pin GND1.When control output pin LX and grounding pin GND1 conducting, inductance L 1 stored energy, diode D1 prevents that voltage from pouring in down a chimney.When control output pin LX and grounding pin GND1 disconnection, inductance L 1 releases energy, and diode D1 has rectified action.Control output pin LX intermittent conduction grounding pin GND1 makes inductance L 1 carry out charging and discharging, thereby makes DC/DC module 10 output charging voltages.In the present embodiment, the charging voltage that is preferably 10 outputs of DC/DC module is 5V, and output current is 100mA.Feedback pin FB is connected between diode D1 and the USB output interface 20, and whether the charging voltage that detects 10 outputs of DC/DC module satisfies threshold value, for example 5V.When feedback pin FB detected charging voltage value of departing from objectives of DC/DC module 10 output, then DC/DC module 10 adjustment outputs guaranteed the stablizing of charging voltage of DC/DC module 10 outputs.
In the present embodiment, further provided the implementation whether a kind of enable EN control power supply input pin VDD obtains cell voltage VBAT.First end of resistance R 1 is connected between power supply input pin VDD and the cell voltage VBAT, and second end connects enable EN, and promptly resistance R 1 is arranged between power supply input pin VDD and the enable EN.First end of switching tube Q1 is connected between resistance R 1 and the enable EN, the second end ground connection, and the 3rd end connects the GPIO pin of baseband chip J.The enable EN of DC/DC controller receives cell voltage VBAT through resistance R 1; Enable EN is connected to the drain electrode (first end) of Q1 simultaneously; The source electrode of Q1 is connected to ground (second end); The grid of Q1 (the 3rd end) is connected to the GPIO pin of baseband chip J, promptly controls opening and turn-offing of Q1 through the switch of GPIO pin.When the GPIO pin is output as drain electrode and the source electrode conducting of Q1 high the time, then the DC/DC controller enable to be input as low level, this moment, the 10 not outputs of DC/DC module were not promptly worked.When the GPIO pin is output as low the time, the drain electrode of Q1 and source electrode turn-off, then the DC/DC controller enable input through resistance R 1 to cell voltage VBAT, be high level, then DC/DC module 10 output charging voltages.In a preferred embodiment, selecting the resistance of R1 is 100 kilo-ohms, so that mobile phone is when shutdown, the GPIO pin is low, and Q1 turn-offs, and the DC/DC controller enables output.Therefore as long as mobile phone is equipped with battery and battery also has electric weight, just can be equipment charge to be charged.When mobile phone power-on, using mobile phone if desired is equipment charge to be charged, then only need be output as the GPIO pin lowly, and DC/DC module 10 enables to export 5V voltage.For example; When mobile phone power-on; Software through mobile phone provides a menu to let the user select whether to be opened for equipment charge function to be charged, if the output of GPIO pin is set to low level when being opened for equipment charge function to be charged, closing then, the output of GPIO pin is set to high level.
In the present embodiment, USB output interface 20 is a standard USB output interface.The USB output interface comprises charging output pin CHG_OUT, correction data wire pin D+, negative data wire pin D-and USB grounding pin GND2.Charging output pin CHG_OUT is connected with the negative pole of diode D1, obtains the charging voltage of DC/DC module 10 outputs, and offers equipment to be charged.Negative data wire pin D-and correction data wire pin D+ short circuit, USB grounding pin GND2 ground connection so that make mobile phone be equivalent to the charger of a standard during mobile phone output 5V, can be equipment to be charged and charges.
First end of second capacitor C 2 is connected between the cell voltage VBAT and DC/DC module 10 of mobile phone, the other end ground connection of second capacitor C 2.Second capacitor C 2 and first capacitor C 1 are used for filtering equally.
In the present embodiment, equipment to be charged is bluetooth earphone.But it is that electronic products such as mp3, mp4 or mobile phone charge that those skilled in the art can expect through this kind mode fully.
Be different from prior art; The mobile phone of the utility model converts cell voltage into through DC/DC module 10 charging voltage of equipment to be charged; And be that equipment to be charged charges by the USB output interface of mobile phone, equipment to be charged can be charged at any time, and must not receive site limitation.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (9)
1. a mobile phone is characterized in that, comprising: DC/DC module and USB output interface, wherein,
Said DC/DC module is connected with the cell voltage of said mobile phone; Be used for converting the cell voltage of mobile phone to charging voltage; It comprises inductance, diode, first electric capacity and DC/DC controller; First end of said inductance is connected with said cell voltage, and second end of said inductance is connected with the positive pole of said diode, and said DC/DC controller comprises:
The power supply input pin is connected with said cell voltage;
Enable is connected between the cell voltage of said power supply input pin and said mobile phone;
The control output pin is connected between the positive pole of second end and said diode of said inductance, controls said inductance stored energy and releases energy;
Said USB output interface comprises the charging output pin; Said charging output pin is connected with the negative pole of said diode; Obtain the said charging voltage of said DC/DC module output; And offering equipment to be charged, an end of said first electric capacity is connected between the said charging output pin of negative pole and said USB output interface of said diode, the other end ground connection of said first electric capacity.
2. mobile phone according to claim 1 is characterized in that, said USB output interface is a standard USB output interface.
3. mobile phone according to claim 2 is characterized in that, said USB output interface further comprises:
The correction data wire pin;
The negative data wire pin is with the short circuit of said correction data wire pin;
The USB grounding pin, said USB grounding pin ground connection.
4. mobile phone according to claim 3 is characterized in that, said mobile phone further comprises:
Resistance, first end are connected between said power supply input pin and the said cell voltage, and second end connects said enable;
Switching tube, first end are connected between said resistance and the said enable, the second end ground connection;
Baseband chip connects the 3rd end of said switching tube;
Wherein, the conducting when the 3rd end input high level of said switching tube is turn-offed during input low level.
5. mobile phone according to claim 4 is characterized in that, the charging voltage of said DC/DC module converts is 5V, and output current is 100mA.
6. mobile phone according to claim 5 is characterized in that said mobile phone further comprises second electric capacity, and first end of said second electric capacity is connected between the cell voltage and said DC/DC module of said mobile phone, the other end ground connection of said second electric capacity.
7. mobile phone according to claim 5 is characterized in that, said DC/DC controller further comprises:
Feedback pin is connected between the said charging output pin of said diode and said USB output interface;
Grounding pin, said grounding pin ground connection.
8. mobile phone according to claim 7 is characterized in that, said control output pin and the conducting of said grounding pin discontinuity.
9. mobile phone according to claim 1 is characterized in that, said equipment to be charged is bluetooth earphone, mp3, mp4 or mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203243581U CN202261422U (en) | 2011-08-31 | 2011-08-31 | Mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203243581U CN202261422U (en) | 2011-08-31 | 2011-08-31 | Mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261422U true CN202261422U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203243581U Expired - Fee Related CN202261422U (en) | 2011-08-31 | 2011-08-31 | Mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184179A (en) * | 2013-05-28 | 2014-12-03 | 中兴通讯股份有限公司 | Battery control method and device, and wireless terminal |
-
2011
- 2011-08-31 CN CN2011203243581U patent/CN202261422U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184179A (en) * | 2013-05-28 | 2014-12-03 | 中兴通讯股份有限公司 | Battery control method and device, and wireless terminal |
| WO2014190831A1 (en) * | 2013-05-28 | 2014-12-04 | 中兴通讯股份有限公司 | Battery control method and device, terminal and computer storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130831 |