CN203368053U

CN203368053U - Mobile power supply

Info

Publication number: CN203368053U
Application number: CN 201320217891
Authority: CN
Inventors: 赖少准
Original assignee: GUANGZHOU ONAN ELECTRONICS Co Ltd
Current assignee: GUANGZHOU ONAN ELECTRONICS Co Ltd
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2013-12-25
Anticipated expiration: 2023-04-25

Abstract

The utility model discloses a mobile power supply, which is characterized by comprising a switching circuit, wherein the switching circuit comprises a vibration switch, a pull-up resistor, a filtering capacitor, a micro controller, a first constant value resistor, a second constant value resistor and an output interface; the micro controller comprises a first I/O interface, a second I/O interface and an A/D conversion interface used for detecting voltage of an output interface; the vibration switch, the pull-up resistor, the filtering capacitor and the first I/O interface are sequentially connected in series so as to input vibration signals of the vibration switch to the micro controller; the second I/O interface, the first constant value resistor and the second constant value resistor are sequentially connected in series, and the second constant value resistor is connected with the output interface in parallel; and the micro controller switches on or off an internal switch according to the voltage of the output interface. The mobile power supply adopts the structure disclosed by the utility model, realizes a vibration identification function, is better in user experience, and controls the operation for instructions such as on, off, power indication and the like by adopting the vibration signals.

Description

Portable power source

Technical field

The utility model relates to power technique fields, is specifically related to portable power source.

Background technology

Universal today at smart mobile phone, smart phone user generally faces such problem, due to wireless network module, the factors such as large scale display screen, cause the mobile phone power consumption amount very big, often has the user to be away from home, find mobile phone electric weight deficiency, affect work and life.And the lithium-ion electric pool technology slower development that mobile phone uses simultaneously, the research discovery, 20 years in the past, lithium battery only increased by 20% with the capacity of volume, so battery technology has become the bottleneck of smart mobile phone development.Under this background, portable power source arises at the historic moment, and this product is converted to the constant 5V voltage that is applicable to the mobile phone charging by the cell voltage by built-in, be convenient for carrying, and can be the mobile phone charging at any time.

And portable power source in the market is multifarious, very different, most of production or Chevron Research Company (CRC), only pay close attention to functional, only requiring can realize the charging gets final product, adopt manual button operation " to open ", " pass ", instructions such as " battery capacity indications ", rarely have the product of focusing on experience.

The utility model content

The purpose of this utility model is to provide portable power source, solves the not good problem of portable power source experience property in the market.

For achieving the above object, the utility model adopts following technical scheme:

Portable power source, this switching circuit comprises vibration switch, pull-up resistor, filter capacitor, microcontroller, the first fixed value resistance, the second fixed value resistance and output interface; Microcontroller comprises an I/O interface, the 2nd I/O interface and for detection of the A/D translation interface of output interface voltage; Vibration switch, pull-up resistor, filter capacitor and an I/O interface are connected successively, thereby the vibration signal of vibration switch is inputed to microcontroller; The 2nd I/O interface, the first fixed value resistance and the second fixed value resistance are connected successively, the second fixed value resistance and output interface parallel connection; According to the voltage of output interface, microcontroller conducting or breaking inner switch.

Further, described output interface is provided with test point, and this test point is connected with described A/D translation interface.

Further, also comprise the lithium ion battery group for store electrical energy, DC-DC reduction voltage circuit and the USB2.0 standard socket be connected with this lithium ion battery group; Described microcontroller connects the DC-DC reduction voltage circuit, and described output interface is connected with the USB2.0 standard socket; When microcontroller has detected equipment and passes through the USB2.0 standard socket and connect output interface, microcontroller conducting internal switch, DC-DC reduction voltage circuit and USB2.0 standard socket are connected, and the electric energy in the lithium ion battery group is equipment charge by DC-DC reduction voltage circuit and USB2.0 standard socket.

Further, also comprise DC-DC booster circuit and MicroUSB socket; Described microcontroller, DC-DC booster circuit and MicroUSB socket are connected successively, and the DC-DC booster circuit is connected with described lithium ion battery group, thereby are embodied as the charging of lithium ion battery group.

Further, also comprise lithium ionic battery protection circuit, this lithium ionic battery protection circuit is connected with described lithium ion battery group.

Further, also comprise shell and LED light, LED light is located at shell and is connected with described microcontroller.

Compared with prior art, the beneficial effects of the utility model are as follows:

1, the utility model adopts above structure, the 2nd I/O interface tandem the first fixed value resistance of microcontroller, thereby to output interface output high level, the voltage of while one of them A/D interface monitor output interface of microcontroller, microcontroller is by the monitoring to the output interface change in voltage, realize auto-switch function: when output interface is unsettled, the voltage that the A/D interface detects equals the output voltage of the 2nd I/O interface; When the output interface mouth connects mobile phone or other equipment, device interior resistance forms dividing potential drop to output interface, the lower voltage of monitoring point 18, and microcontroller recognizes the voltage drop certain numerical value of output interface, microcontroller 14 conducting internal switches; Thereby realize the vibrations recognition function, provide a kind of experience better portable power source;

2, the utility model adopts vibration signal to control " opening ", and " passs ", the operation of instructions such as " battery capacity indications ", having changed current is all the state of the manual button operation of employing, moves moving power supply with hand one, will show the current electric quantity state;

3, the utility model is when mobile phone being detected and be connected to the USB2.0 standard socket, conducting output automatically, otherwise, turn-offing output, portable power source enters holding state, can reduce power consumption, keeps for a long time electric weight, and that has realized again plug and play causes the letter operation.

The accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the module diagram of switching circuit in the utility model portable power source embodiment;

Fig. 2 is the circuit theory diagrams of the utility model portable power source embodiment;

Fig. 3 is the workflow diagram of the utility model portable power source embodiment;

In figure, the 1-switching circuit; The 11-vibration switch; The 12-pull-up resistor; The 13-filter capacitor; The 14-microcontroller; 141-the one I/O interface; 142-the 2nd I/O interface; The 143-VDD interface; The 144-A/D translation interface; 15-the first fixed value resistance; The 16-output interface; 17-the second fixed value resistance; The 18-monitoring point; The 2-DC-DC booster circuit; The 3-MicroUSB socket; The 4-DC-DC reduction voltage circuit; 5-USB2.0 standard socket; The 6-lithium ionic battery protection circuit.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.

Portable power source as shown in Fig. 1 to Fig. 3 embodiment, comprise switching circuit 1, and this switching circuit comprises vibration switch 11, pull-up resistor 12, filter capacitor 13, microcontroller 14, the first fixed value resistance 15, the second fixed value resistance 17 and output interface 16.Output interface 16 is for connecting external equipment to be charged (such as mobile phone etc.).Microcontroller 14 comprises an I/O interface 141, the 2nd I/O interface 142, VDD interface 143 and for detection of the A/D translation interface 144 of output interface 16 voltages.Vibration switch 11 and I/O interface 141 series connection, vibration switch 11, pull-up resistor 12 and 143 series connection of VDD interface, filter capacitor 13 and vibration switch 11 parallel connections, thus realize the vibration signal of vibration switch 11 is inputed to microcontroller 14.The 2nd I/O interface 142, the first fixed value resistance 15 and the second fixed value resistance 17 are connected successively, the second fixed value resistance 17 and output interface 16 parallel connections.The voltage signal of 14 pairs of output interfaces 16 of microcontroller determines whether and makes response after analyzing: conducting/breaking inner switch, thereby ON/OFF output.Vibration switch 11 ground connection.

In the present embodiment, output interface 16 is provided with test point 18, and this test point 18 is connected with the A/D translation interface.

As to the further illustrating of the present embodiment, the operation principle of switching circuit now is described:

(1) but use the microcontroller 14 of low-power consumption running, when portable power source in rocking and/or during operating state, microcontroller 14 work, when portable power source in static and during without connection status, microcontroller 14 penetration depths sleeps, reduce stand-by power consumption;

(2) vibration switch 11 rocks by product the vibration signal caused and changes into the signal that can be microcontroller 14 identifications: during vibration switch 11 work, be equivalent to vibration switch 11 places and be communicated with, VDD interface 143 output high level, I/O interface 141 input low levels; When vibration switch 11 is not worked, be equivalent to vibration switch 11 places and disconnect, VDD interface 143 output high level, I/O interface 141 input high levels.

(3), after 14 pairs of signal analysis of microcontroller, according to signal, make response (for example showing current battery electric quantity state) or without response;

(4) the 2nd I/O interface tandem the first fixed value resistance 15 of microcontroller 14, thereby the output high level is to output interface 16, the voltage of the monitoring point 18 of output interface 16, output interface 16 and the second fixed value resistance 17 parallel connections are located in an A/D translation interface monitoring simultaneously being located at microcontroller 14; When output interface 16 does not connect external equipment, output interface 16 is unsettled, and the voltage of monitoring point 18 equals the output voltage of the 2nd I/O interface; When output interface 16 connects external equipment, device interior resistance is connected with the first fixed value resistance 15 of the 2nd I/O interface tandem, circuit communication, and device interior resistance forms dividing potential drop, the lower voltage of monitoring point 18 to output interface 16; The voltage that recognizes output interface 16 when microcontroller 14 compares with the output voltage of the 2nd I/O interface the certain numerical value that descended, its internal switch of microcontroller 14 conductings.

The present embodiment also comprises lithium ion battery group, lithium ionic battery protection circuit 6, DC-DC booster circuit 2 and the MicroUSB socket 3 for store electrical energy.Microcontroller 14, DC-DC booster circuit 2 and MicroUSB socket 3 are connected successively, and the lithium ion battery group is connected with DC-DC booster circuit 2, and lithium ion battery group and lithium ionic battery protection circuit 6.The 5V boost in voltage that DC-DC booster circuit 2 will be inputted from MicroUSB socket 3, to 8.4V, is charged thereby be embodied as the lithium ion battery group.

The present embodiment also comprises DC-DC reduction voltage circuit 4 and the USB2.0 standard socket 5 be connected with the lithium ion battery group.DC-DC reduction voltage circuit 4 by the voltage step-down of lithium ion battery group to 5V.Microcontroller 14 connects DC-DC reduction voltage circuit 4; Output interface 16 is connected with USB2.0 standard socket 5.When microcontroller 14 has detected equipment and passes through USB2.0 standard socket 5 and connect output interface 16, microcontroller 14 conducting internal switches, the output of DC-DC reduction voltage circuit 4 and USB2.0 standard socket 5 are connected, and the electric energy in the lithium ion battery group is equipment charge by DC-DC reduction voltage circuit 4 and USB2.0 standard socket 5.

The present embodiment also comprises shell and four LED light, and LED light is located on shell and with microcontroller 14 and is connected.When portable power source is standing, microcontroller 14 enters holding state, reduces power consumption, and LED light is reactionless.When the user rocks portable power source, vibration switch rocks by product the vibration signal caused and changes into the signal that can be microcontroller identification, 14 pairs of signals of microcontroller are analyzed, and that distinguishes appointment rocks action or invalid action (as carry this product walking, run and to cause rock); If the former, it is bright that microcontroller 14 is controlled LED light, thereby indicate the electric weight in current lithium ion battery group; If the latter, microcontroller 14 will not be responded.Can judge it is that rocking of appointment moved or invalid action according to the frequency of action.

Other structure of the present embodiment portable power source is referring to prior art.

The utility model is not limited to above-mentioned execution mode, if various changes of the present utility model or modification are not broken away to spirit and scope of the present utility model, if, within these changes and modification belong to claim of the present utility model and equivalent technologies scope, the utility model also is intended to comprise these changes and modification.

Claims

1. portable power source, it is characterized in that: comprise switching circuit, this switching circuit comprises vibration switch, pull-up resistor, filter capacitor, microcontroller, the first fixed value resistance, the second fixed value resistance and output interface; Microcontroller comprises an I/O interface, the 2nd I/O interface, VDD interface and for detection of the A/D translation interface of output interface voltage; Vibration switch and an I/O interface tandem, vibration switch, pull-up resistor and VDD interface tandem, filter capacitor and vibration switch parallel connection, thus realize the vibration signal of vibration switch is inputed to microcontroller; The 2nd I/O interface, the first fixed value resistance and the second fixed value resistance are connected successively, the second fixed value resistance and output interface parallel connection; According to the voltage of output interface, microcontroller conducting or breaking inner switch.

2. portable power source according to claim 1, it is characterized in that: described output interface is provided with test point, and this test point is connected with described A/D translation interface.

3. portable power source according to claim 1, is characterized in that: described vibration switch ground connection.

4. portable power source according to claim 1, is characterized in that: also comprise the lithium ion battery group for store electrical energy, DC-DC reduction voltage circuit and the USB2.0 standard socket be connected with this lithium ion battery group; Described microcontroller connects the DC-DC reduction voltage circuit, and described output interface is connected with the USB2.0 standard socket; When microcontroller has detected equipment and passes through the USB2.0 standard socket and connect output interface, microcontroller conducting internal switch, DC-DC reduction voltage circuit and USB2.0 standard socket are connected, and the electric energy in the lithium ion battery group is equipment charge by DC-DC reduction voltage circuit and USB2.0 standard socket.

5. portable power source according to claim 4, it is characterized in that: also comprise lithium ionic battery protection circuit, this lithium ionic battery protection circuit is connected with described lithium ion battery group.

6. according to the described portable power source of claim 4 or 5, it is characterized in that: also comprise DC-DC booster circuit and Micro USB socket; Described microcontroller, DC-DC booster circuit and Micro USB socket are connected successively, and the DC-DC booster circuit is connected with described lithium ion battery group, thereby are embodied as the charging of lithium ion battery group.

7. portable power source according to claim 1, it is characterized in that: also comprise shell and LED light, LED light is located at shell and is connected with described microcontroller.