CN201113518Y

CN201113518Y - USB power supply equipment

Info

Publication number: CN201113518Y
Application number: CNU2007201783517U
Authority: CN
Inventors: 赖丽纯
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-09
Filing date: 2007-10-09
Publication date: 2008-09-10
Anticipated expiration: 2017-10-09

Abstract

The utility model provides a USB power supply device, mainly comprising a shell, an overload protection circuit, an overvoltage protection circuit and a voltage-level generating circuit, wherein, the shell is provided with a plurality of USB connectors bared on the surface and a power supply unit inside, the power supply unit is connected with an input power supply and comprises a load detecting circuit used for detecting that whether the USB connectors are connected with rechargeable products or not; the overload protection circuit is used for protecting and preventing the rechargeable products from being burnt; the overvoltage protection circuit prevents each circuit device from being burnt because of over high input voltage; the voltage-level generating circuit can generate a potential difference of a power supply of an analog computer host and connect the potential difference with pins of the plurality of USB connectors so as to ensure that the rechargeable products are connected with the USB connectors through USB connecting wires; and the rechargeable products can detect the potential difference of the power supply of the analog computer host during charging, so that the rechargeable products can be smoothly charged.

Description

The USB power supply device

Technical field

The utility model relates to a kind of USB power supply device, be meant that especially a kind of voltage level generation circuit that passes through produces a potential difference, make charge prepd the time can detect the potential difference of analogue computer host power supply, with the USB power supply device that charges smoothly in charging.

Background technology

Such as electronic products such as mobile phone, PDA, MP3.. all must providing by electric power, the ability normal operation, and the power source of above-mentioned electronic product providing normally by storage battery, but the stored electric power of storage battery has when exhausting, when battery power exhausts, promptly need to carry out the charging of storage battery.And the charging of storage battery source can be domestic power supply, power supply on vehicle or computer host power supply etc., yet, when charging, still have following disappearance by above-mentioned power source:

1. if originate as charging with domestic power supply, after then must converting AC power to DC power supply earlier by transformer, again direct power delivery is stored to storage battery, show, charge prepd takes place easily burn situation but existing transformer charging modes there is no any overload.

If with power supply on vehicle as charging source, then must connect automobile power source by automobile-used joint, automobile power source is transferred in the storage battery store again, show but existing Vehicular rechargeable mode there is no any overload, charge prepd takes place easily burn situation.

If with computer host power supply as charging source, then must be by the USB connecting line, computer host power supply transferred in the storage battery store, show but existing Vehicular rechargeable mode there is no any overload, charge prepd takes place easily burn situation.And when some charge prepd charged by the USB connecting line, whether detecting earlier had the potential difference that detects the host computer data wire, if do not have when detecting potential difference, then can't charge, so that only can use with the computer host power supply collocation at the USB connecting line.

This shows that above-mentioned existing article still have many disappearances, real non-one kindhearted designer, and demand urgently being improved.

Every shortcoming that this case utility model people derives in view of above-mentioned existing electric supply installation is urgently to think to be improved innovation, and after concentrating on studies through taking great pains to attain one's goal for many years, successfully this part USB power supply device is finished in research and development finally.

Summary of the invention

The purpose of this utility model promptly is to provide a kind of USB power supply device, be in housing, to be provided with electric supply installation, expose on the described surface of shell several USB joints are arranged, be that described electric supply installation is connected with transformer connecting line, power supply on vehicle joint connecting line or USB connecting line, in several USB joints that power supply are directed to housing, the USB power supply device that several USB joints can be charged for several charge prepds simultaneously.

Of the present utility model time a purpose is to be to provide a kind of overload Presentation Function that has, and burns the USB power supply device that damages the facts to avoid charge prepd.

A purpose more of the present utility model is to be to provide a kind of load Presentation Function that has, and makes the user can learn easily whether charge prepd has the USB power supply device that is charging.

Another purpose of the present utility model is to be to provide a kind of potential difference that produces an analogue computer main frame, the USB power supply device that charge prepd can be charged by the USB connecting line.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of USB power supply device is characterized in that: comprising:

One housing, exposing on its outer surface has several USB joint and power input holes;

One electric supply installation, it is arranged in the housing, and it comprises:

One power supply input interface, it is to be connected with the power input hole of housing, provides to each circuit and several USB joints will import power supply;

One load detecting circuit, it is to detect on several USB joints whether the connection load is arranged, if having, can order about the load display lighting;

One overload protecting circuit, it is whether the detection supply power voltage is normal, if can order about display and produce light source;

One overvoltage crowbar, whether it can detect input voltage too high, if can carry out step-down immediately;

One voltage level produces circuit, and described voltage level produces circuit can produce potential difference, and described potential difference is directed on the pin of several USB joints, makes the potential difference that has the analogue computer host power supply on several USB joints.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:

1. the utility model is to be provided with electric supply installation in a housing, expose on the described surface of shell several USB joints are arranged, be that described electric supply installation is connected with transformer connecting line, power supply on vehicle joint connecting line or USB connecting line, power supply is directed in several USB joints, several USB joints can be charged simultaneously for several charge prepds.

2. the utility model is to have the overload Presentation Function, takes place to burn the damage facts because of abnormal voltage to avoid charge prepd.

3. the utility model is to have the load Presentation Function, makes the user can learn easily whether charge prepd has and is charging.

4. the utility model is the potential difference that can produce an analogue computer host power supply, and the charge prepd of various types all can be charged by the USB connecting line.

Description of drawings

Fig. 1 is the schematic perspective view of the utility model USB power supply device;

Fig. 2 is the electric supply installation calcspar of the utility model USB power supply device;

Fig. 3 is the electric supply installation circuit diagram of the utility model USB power supply device;

Fig. 4 A, Fig. 4 B, Fig. 4 C are respectively the enforcement schematic diagram of the utility model USB power supply device.

Description of reference numerals: 1-housing; The 11-power input hole; The 111-USB slot; The 112-jack; The 2-USB joint; The 3-electric supply installation; 31-power supply input interface; The 32-load detecting circuit; 33-load display; The 34-overload protecting circuit; The 341-voltage sample circuit; The 342-voltage comparator circuit; The 343-amplifying circuit; The 344-display; The 35-overvoltage crowbar; The 36-voltage level produces circuit; 41-transformer frequency response connecting line; 42-power supply on vehicle joint connecting line; The 43-USB connecting line; 5-electricity consumption product; The 6-charge prepd; The 7-USB connecting line.

Embodiment

Seeing also Fig. 1 to shown in Figure 3, is USB power supply device provided by the utility model, mainly includes:

One housing 1, exposing on described housing 1 outer surface has several USB joints 2 and power input hole 11, and described power input hole 11 can be the jack 112 of USB slot 111 or other form specifications;

One electric supply installation 3, described electric supply installation 3 is arranged in the housing 1, and it mainly comprises:

One power supply input interface 31, described power supply input interface 31 are to be connected with the power input hole 11 of housing 1, provide to each circuit and several USB joints 2 will import power supply, make all exportable DC power supply of several USB joints 2;

One load detecting circuit 32, described load detecting circuit 32 is in order to detect on described several USB joints 2 whether the connection charge prepd is arranged, if have, then can order about load display 33 and produce light source, described overload display 33 is that emergence goes out outside the housing 1, and overload display 33 can be LED or other luminous elements;

One overload protecting circuit 34, described overload protecting circuit 34 are to comprise electric sample sample circuit 341, voltage comparator circuit 342, amplifying circuit 343 and display 344; Be by voltage sample circuit 341 interceptings one supply power voltage, and supply power voltage is sent in the voltage comparator circuit 342 compares, if supply power voltage is during more than or equal to set point, judge that promptly supply power voltage is normal, by amplifying circuit 343 signal is amplified again, order about display 344 generation light sources to produce enough big electric current, light source by described display 344 generations, described display 344 is that emergence goes out outside the housing 1, can learn easily that in order to the user charge prepd is in charging process, all keep charging normal, and no abnormal, avoid charge prepd to burn the facts; In addition, described display 344 can be LED or other luminous elements;

One overvoltage crowbar 35, described overvoltage crowbar 35 are when too high or other reasons causes overtension when input voltage, promptly can carry out step-down immediately, avoid too high because of input voltage, cause each circuit arrangement to burn;

One voltage level produces circuit 36, described voltage level produces circuit 36 and is made of four electricity group R15, R16, R17, R18, wherein, be earlier electricity to be organized R15 and R16 with the electric R17 of group and after R18 is connected in series respectively, be attempted by again on the input power supply, make electricity group R15 can produce a potential difference respectively with some A points of resistance R 17 and being connected in series of R18 and B point place with R16, and the potential difference on described A point and the B point is directed on the pin D-and D+ of several USB joints 2, make the potential difference that has the analogue computer host power supply on several USB joints 2.

Please consult Fig. 2 and Fig. 4 A simultaneously; Fig. 4 B; shown in Fig. 4 C; it is enforcement schematic diagram of the present utility model; wherein; as Fig. 4 A; shown in the B; the user can be connected with the power input hole 11 of housing 1 by transformer frequency response connecting line 41 or power supply on vehicle joint connecting line 42 or USB connecting line 43; power supply is directed to the input power supply interface 31 of electric supply installation 3; make input power supply interface 31 power supply can be sent to load detecting circuit 32; load display 33; overload protecting circuit 34; overvoltage crowbar 35; voltage level produces in circuit 36 and several USB joints 2; make USB joint 2 can provide power supply to charge prepd 6 or electricity consumption product 5; and, make it can carry out the charging and the electricity consumption of multiple product simultaneously by several USB joints 2 on the housing 1.When electricity consumption product 5 or charge prepd 6 are connected with several USB joints 2 on housing 1 surface by USB connecting line 7; the load detecting circuit 32 of described electric supply installation 3 can detect immediately whether the electricity consumption product 5 of connection or charge prepd 6 are arranged on the USB joint 2; if have; then can order about load display 33 and produce light; and whether overload protecting circuit 34 can be detected supply power voltage simultaneously normal; if normal, also can order about display 344 and produce light, learn that for the user charge condition is good.

In addition, charge prepd 6 is in charging process, can detect the potential difference of simulation computer host power supply on the USB joint 2 simultaneously, make some need detect the charge prepd that potential difference could be charged, also can charge smoothly, cause described several USB joints 2 to charge for the charge prepd 6 of arbitrary pattern.

USB power supply device provided by the utility model with the aforementioned case of quoting as proof mutually relatively the time, has more following advantage:

1. the utility model is to be provided with electric supply installation in a housing, and exposed on the described surface of shell have several The USB joint is with described electric supply installation and transformer connecting line, power supply on vehicle joint connecting wire or USB Connecting line is connected, and power supply is directed in several USB joints, makes several USB joints can supply simultaneously number Planting charge prepd charges.

2. the utility model is to have the overload Presentation Function, takes place to take place because of abnormal voltage to avoid charge prepd Burn the damage facts.

3. the utility model is to have the load Presentation Function, so that the user can learn easily whether charge prepd has Charging.

4. the utility model is the potential difference that can produce an analogue computer host power supply, and the charging of various types is produced Product all can charge by the USB connecting line.

More than explanation is just illustrative for the utility model, and nonrestrictive, the common skill in this area Art personnel understand, and in the situation that does not break away from the spirit and scope that claim limits, can make many repairing Change, change or equivalence, but but all will fall within the claim restricted portion of the present utility model.

Claims

1. USB power supply device is characterized in that: comprising:

2. USB power supply device according to claim 1 is characterized in that: the power input hole of described surface of shell is the USB slot.

3. USB power supply device according to claim 1 is characterized in that: described overload protecting circuit is to comprise electric sample sample circuit, voltage comparator circuit, amplifying circuit and display; Voltage sample circuit intercepts a supply power voltage, and supply power voltage is sent in the voltage comparator circuit compares, if supply power voltage during more than or equal to set point, judges that promptly supply power voltage is normal, by amplifying circuit signal is amplified again, order about display generation light source to produce enough big electric current.

4. USB power supply device according to claim 1, it is characterized in that: described voltage level produces circuit and is made of four electricity groups, wherein, be after the electricity group is connected in series respectively in twos earlier, be attempted by again on the input power supply, make the electric in twos serial connection point place that organizes to produce a potential difference respectively, and described potential difference is directed on the pin of several USB joints, make the potential difference that has the analogue computer host power supply on several USB joints.