CN201075714Y - Multifunctional USB charger - Google Patents

Multifunctional USB charger Download PDF

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Publication number
CN201075714Y
CN201075714Y CNU2007200542814U CN200720054281U CN201075714Y CN 201075714 Y CN201075714 Y CN 201075714Y CN U2007200542814 U CNU2007200542814 U CN U2007200542814U CN 200720054281 U CN200720054281 U CN 200720054281U CN 201075714 Y CN201075714 Y CN 201075714Y
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CN
China
Prior art keywords
power supply
booster circuit
plug
usb
external equipment
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.)
Expired - Fee Related
Application number
CNU2007200542814U
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Chinese (zh)
Inventor
张恺龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNU2007200542814U priority Critical patent/CN201075714Y/en
Application granted granted Critical
Publication of CN201075714Y publication Critical patent/CN201075714Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a multifunctional USB charger, and the key technical points are that: the charger includes a USB input plug, which can be connected with the external equipment and used for receiving the power supply of the external equipment; a voltage booster circuit, which is connected with the USB input plug and can convert the low-voltage power supply into high-voltage power supply; an output plug, which is connected with the voltage booster circuit and outputs the high-voltage power of the voltage boost circuit to the external equipment for charging; a battery that is connected between the USB input plug and the voltage booster circuit, can receive the power supply of the external equipment by the USB input plug and can also charge for the external equipment by the voltage booster circuit and the output plug. The utility model can charge for the mobile phone when the battery is low under an emergent case. The circuit structure of the utility model is simple, the amount of the electronic components is few and the cost is low.

Description

A kind of Multifunctional USB charger
[technical field]
The utility model relates to a kind of charger, relates in particular to a kind of USB charger.
[background technology]
Mobile phone has become indispensable means of communication in people's life now, the mobile phone great majority all adopt the supporting mains charger of producer to charge at present, during charging, an end of mains charger is connected with domestic power supply, the other end is connected with mobile phone or with the battery of taking off from mobile phone, promptly can realize charging, yet this mains charger must be connected with domestic power supply, when not having external power supply, the situation of electricity appears not having in mobile phone, and mains charger is with ineffective.
Some USB chargers have been occurred on the market now, yet its function ratio is more single, power supply on the external power supply directly can only be taken out and be defeated by mobile phone, it does not have the effect of store electrical energy, can not play emergent effect, therefore be necessary prior art is improved, develop a kind of charger for mobile phone, to overcome the above problems with emergencing action.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, provides that circuit structure is simple, can meet an urgent need is the Multifunctional USB charger of cell-phone charging.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of Multifunctional USB charger that the utility model is related is characterized in that: include the USB input plug, it can be connected with external equipment, in order to receive the power supply of external equipment; Booster circuit, it is connected with described USB input plug, the low power source conversion that receives can be become high power supply output; Output plug, it is connected with booster circuit, and the high power supply of booster circuit output is defeated by charging external equipment;
Also be connected with battery between described USB input plug and booster circuit, this battery can receive the power supply of external equipment by the USB input plug, can be charging external equipment by booster circuit, output plug also.
Aforesaid a kind of Multifunctional USB charger is characterized in that: the USB input plug can be connected with band USB socket power supply adaptor, and power supply adaptor is connected with extraneous AC power.
Aforesaid a kind of Multifunctional USB charger is characterized in that: also include can display working condition display circuit, it is connected with booster circuit with the USB input plug.
Aforesaid a kind of Multifunctional USB charger, it is characterized in that: described booster circuit comprises single-chip microcomputer, its Enable Pin is connected with the positive pole of USB input plug, the drive output of single-chip microcomputer is connected on the grid of metal-oxide-semiconductor by resistance, the drain electrode of metal-oxide-semiconductor is connected on the positive pole of voltage-stabiliser tube, the negative pole of voltage-stabiliser tube is connected on the positive pole of output plug, and the source ground of metal-oxide-semiconductor, feedback end are connected between the both positive and negative polarity of output plug.
The beneficial effects of the utility model are:
1, the utility model is when installing battery, and the USB input plug directly is inserted on the USB socket on the external power supply, and output plug is inserted in the mobile phone socket, can realize easily that external power supply is a cell-phone charging; And do not need extraneous high voltage source;
2, the utility model is when installing battery, and the USB input plug directly is inserted on the USB socket on the external power supply, can realize easily that external power supply is a battery charge; When people's mobile phone did not have electricity, the socket that output plug is inserted in mobile phone just can be embodied as cell-phone charging, to play emergent effect.
3, USB plug directly is inserted in power supply adaptor with the USB socket and is connected, power supply adaptor is connected with external power supply, will stir control switch again, and external power supply is a battery charge easily; When mobile phone does not have electricity, USB plug is inserted in the mobile phone socket just can be embodied as cell-phone charging, to play emergent effect.
4, the utility model circuit structure is simple, electronic component is few, cost is low.
[description of drawings]
Be described in further detail below in conjunction with accompanying drawing and execution mode of the present utility model:
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is the utility model circuit diagram.
[embodiment]
As shown in Figure 1, a kind of Multifunctional USB charger, include the USB input plug 1, booster circuit 2, the output plug 3 that connect in turn, USB input plug 1 can be connected with external power supply, the positive pole of USB input plug 1 is connected with the positive pole of external power supply USB interface, the minus earth of USB input plug 1 is in order to receive the power supply of external power supply; Booster circuit 2 can convert the LVPS that receives from described USB input plug to high-voltage power supply output; Output plug 3 is defeated by charging external equipment with the high voltage voltage source of booster circuit 2 outputs; Can be elevated to the needed voltage 5.6V of external equipment by booster circuit 2.
Also be connected with battery 4 between described USB input plug 1 and booster circuit 2, the positive pole of battery 4 is connected on the positive pole of USB input plug 1, the minus earth of battery 4.This battery 4 can receive the power supply of external power supply by USB input plug 1, also can pass through booster circuit 2, output plug 3 is a charging external equipment.Cell voltage is 2.4V, and booster circuit 2 can be elevated to it needed voltage 5.6V of external equipment.
The utility model can also be used with power supply adaptor, USB plug directly is inserted in power supply adaptor with the USB socket is connected, power supply adaptor is connected with extraneous AC power, will stir control switch again, can realize easily that extraneous AC power is a battery charge; When people's external equipment does not have electricity, USB plug is inserted in the external equipment socket just can be embodied as charging external equipment, to play emergent effect.
As Fig. 2, the utility model also include can display working condition display circuit 5, it is connected with booster circuit 2 with USB input plug 1; Display circuit 5 comprises LED 1, and the LED1 negative pole is connected on the negative pole of voltage-stabiliser tube D1, and the positive pole of voltage-stabiliser tube D1 is connected on the positive pole of USB input plug 1; The positive pole of LED 1 connects booster circuit 2 by resistance R 1.
Described booster circuit 2 comprises single-chip microcomputer U1 (PT1301), its Enable Pin ON/OFF and power end VDD are connected together, and be connected on the negative pole of voltage-stabiliser tube D3 by resistance R 6, the positive pole of voltage-stabiliser tube D3 is connected with the positive pole of the Anode and battery 4 of USB input plug 1 by inductance L 1, Enable Pin ON/OFF receives the voltage of the positive pole input of USB input plug 1, during high voltage, starts single-chip microcomputer U1 and starts working, during low-voltage, single-chip microcomputer U1 quits work.Power end VDD introduces working power to single-chip microcomputer U1; The drive output EXIT of single-chip microcomputer U1 is connected on the grid of metal-oxide-semiconductor Q2 by resistance R 5, the drain electrode of metal-oxide-semiconductor Q2 is connected on the positive pole of voltage-stabiliser tube D3, the negative pole of voltage-stabiliser tube D3 is connected on the positive pole of output plug 3, the source ground of metal-oxide-semiconductor Q2, the very big electric current of the drive output EXIT of single-chip microcomputer U1 output is added on the load resistance, with the voltage of the positive pole that improves output plug 3; The ground end GND ground connection of single-chip microcomputer U1.
Be connected with resistance R 7 and the R8 that is cascaded at the positive pole of output plug 3 and the negative pole of output plug 3.Single-chip microcomputer U1 feedback end FB is connected on the contact between resistance R 7 and the R8.
In order to improve the stability of booster circuit, an end of inductance L 1 is connected an end of capacitor C 1, and capacitor C 1 other end ground connection is to reduce the noise between the anodal of input USB input plug 1 and the ground end GND; Be connected an end of capacitor C 2 on the power output end VDD, the other end ground connection of capacitor C 2 is to reduce the noise between power output end VDD and the ground end GND.

Claims (4)

1. Multifunctional USB charger, it is characterized in that: include USB input plug (1), it can be connected with external equipment, in order to receive the power supply of external equipment; Booster circuit (2), it is connected with described USB input plug (1), the low power source conversion that receives can be become high power supply output; Output plug (3), it is connected with booster circuit (2), and the high power supply of booster circuit (2) output is defeated by charging external equipment;
Between described USB input plug (1) and booster circuit (2), also be connected with battery (4), this battery (4) can receive the power supply of external equipment by USB input plug (1), also can pass through booster circuit (2), output plug (3) is a charging external equipment.
2. a kind of Multifunctional USB charger according to claim 1 is characterized in that: USB input plug (1) can be connected with band USB socket power supply adaptor, and power supply adaptor is connected with extraneous AC power.
3. a kind of Multifunctional USB charger according to claim 1 and 2 is characterized in that: also include can display working condition display circuit (5), it is connected with booster circuit (2) with USB input plug (1).
4. a kind of Multifunctional USB charger according to claim 1, it is characterized in that: described booster circuit (2) comprises single-chip microcomputer (U1), its Enable Pin (ON/OFF) is connected with the positive pole of USB input plug (1), the drive output (EXIT) of single-chip microcomputer (U1) is connected on the grid of metal-oxide-semiconductor (Q2) by resistance (R5), the drain electrode of metal-oxide-semiconductor (Q2) is connected on the positive pole of voltage-stabiliser tube (D3), the negative pole of voltage-stabiliser tube (D3) is connected on the positive pole of output plug (3), the source ground of metal-oxide-semiconductor (Q2), feedback end (FB) is connected between the both positive and negative polarity of output plug (3).
CNU2007200542814U 2007-07-13 2007-07-13 Multifunctional USB charger Expired - Fee Related CN201075714Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200542814U CN201075714Y (en) 2007-07-13 2007-07-13 Multifunctional USB charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200542814U CN201075714Y (en) 2007-07-13 2007-07-13 Multifunctional USB charger

Publications (1)

Publication Number Publication Date
CN201075714Y true CN201075714Y (en) 2008-06-18

Family

ID=39520971

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200542814U Expired - Fee Related CN201075714Y (en) 2007-07-13 2007-07-13 Multifunctional USB charger

Country Status (1)

Country Link
CN (1) CN201075714Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577437B (en) * 2009-03-27 2011-11-16 上海华勤通讯技术有限公司 Nokia charger circuit compatible with CDMA mobile phone and charging method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577437B (en) * 2009-03-27 2011-11-16 上海华勤通讯技术有限公司 Nokia charger circuit compatible with CDMA mobile phone and charging method

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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: 20080618