CN201307690Y

CN201307690Y - Power supply changeover device

Info

Publication number: CN201307690Y
Application number: CNU2008203025852U
Authority: CN
Inventors: 曹政丰
Original assignee: SAMOASANG ACHIST CO Ltd
Current assignee: SAMOASANG ACHIST CO Ltd
Priority date: 2008-10-30
Filing date: 2008-10-30
Publication date: 2009-09-09
Anticipated expiration: 2018-10-30

Abstract

The utility model relates to a power supply changeover device which comprises a USB connector, a direct current power supply input port jack, a direct current power supply output port and a direct current changing direct current voltage adjuster, wherein the direct current power supply output port is electrically connected with a direct current power supply input port; in addition, the direct current changing direct current voltage adjuster is electrically connected with the USB connector and the direct current power supply input port, and then an input power supply of the direct current power supply jack is treated with voltage reduction procedure to be output to the USB connector. The utility model is good for matching with the chargers of notebooks, that is, can provide charging of other portable type electric products (such as a handset, a PDA or an IPod) without starting the notebooks, and is convenient and energy-saving in application.

Description

Power supply changeover device

Technical field:

The utility model relates to a kind of power supply changeover device (power adaptor), refers to a kind of power supply changeover device of changing the small part direct-current input power supplying for the output of USB power supply especially.

Background technology:

As shown in Figure 1, in the time of will carrying mobile computer 30 and other electronic product (as mobile phone) 10 in the past and went out, usually need to carry two kinds of chargings with transformer (transformer adds power line), one provides mobile computer to use, another offers the use of electronic product 10, can twining each other between line and line, charging also is very important with the weight of transformer.Therefore, last result usually is several groups of charging transformers diversified in specifications of trying to win sb.'s favor, and is placed in each place commonly used respectively, so, though reduced the burden of weight, has increased the extra cost of buying more relatively and has loaded.

Along with universal serial bus (Universal Serial Bus, hereinafter to be referred as USB) the popularizing of specification, novel mobile computer 30 has increased its external usb connecting port 32 successively, so that higher electric current output to be provided, to adapt to the portable electronic product that the more and more USB of use power lines 11 charge.Though, the usb connecting port that present commercially available mobile computer can provide, the electric current of its output is to come and go highly, but most of mobile computer still is subject to the design of internal circuit, output current about 500mA still can only be provided, can not supplying unit time charge value demand height, or the charging operation of the electronic product of charging faster is provided.In addition, if desire uses the usb connecting port of mobile computer to come external charge, also need to keep mobile computer simultaneously at present, and can not use the USB port of the mobile computer of not starting shooting to charge separately in open state.

Also release the mobile computer charging transformer 40 of having USB jack 42 between imitative, charge with these USB jack 42 grafting to provide other portable electronic product 10 to see through USB power line 11; But, must buy the extra while with the charging transformer out-put supply joint 41 of this charging with transformer 40 uses, the waste resource increases cost on foot for this reason; In addition, USB jack 42 is attached to and charges when using on the transformer 40, and the internal circuit of this transformer also need be considered problems such as Electromagnetic Interference, so will increase the design cost of internal circuit, as shown in Figure 2.

Therefore, how can under the state that mobile computer is not started shooting, can provide enough USB power supplys, and do not need to buy mobile computer transformer separately, the target of endeavouring to reach for the inventor with special purpose for the demand to other electrical equipment.

The utility model content:

Technical problem to be solved in the utility model is: at above-mentioned the deficiencies in the prior art, provide a kind of power supply changeover device, a kind of power supply changeover device of changing the small part direct-current input power supplying for the output of USB power supply.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of power supply changeover device, include a direct current power input mouth, a USB connector, a direct current output port of power source, reach a power supply adjustment module, this dc supply input mouth is in order to importing a direct current power supply, and it is divided into a main power source and an auxiliary power; This USB connector and this auxiliary power are electrically connected, in order to export a secondary current; This dc power output end mouth and this main power source are electrically connected to export a principal current; This power supply adjustment module has an input and a secondary output, and this input is electrically connected this dc supply input mouth, and should be electrically connected between this auxiliary power and this USB connector by the pair output, to export a secondary current.

Wherein, this power supply adjustment module can be DC-DC voltage regulator (DC/DC voltage regulator), in order to adjust the voltage that (reduction) this dc supply input mouth is imported, to cooperate the voltage of the required output of this USB connector.A plug can be a plug (plug), a jack (socket), has the plug (cordplug) of power line or the three all has and this USB connector can be.This dc power output end mouth also can be a plug (plug) or a plug (cord plug) with power line.

Wherein, the power supply adjustment module can be the step-down rectifier module.The part of the power supply that this dc supply input mouth is imported is connected and is passed to the secondary output of this USB connector, and sees through the main output that this dc power output end mouth provides this input power supply; Simultaneously, this step-down rectifier module can provide stable voltage and electric current output.

Wherein, this step-down rectifier module is made up of at least one DC-DC voltage regulator (DC/DC voltage regulator) and at least one rectifier (rectifier).In addition, also can comprise: at least one voltage stabilizing rectification module, in order to stablize the voltage and the electric current of this DC power supply connector output.

For making structure of the present utility model and advantage that more cheer and bright image can be arranged, below provide most preferred embodiment and correlative type to describe in detail.

Description of drawings:

Fig. 1 is the schematic perspective view that utilizes the USB port of mobile computer that other electronic products are charged in the known technology.

Fig. 2 is the schematic perspective view that utilizes the USB jack on the transformer that other electronic products are charged in the known technology.

Fig. 3 is the schematic perspective view that electronic product utilizes power supply changeover device of the present utility model to use the charging of mobile computer to charge with transformer.

Fig. 4 is the another kind of embodiment of USB connector of the present utility model and the schematic perspective view of electronic product connection status.

Fig. 5 is the internal electrical structure first embodiment schematic diagram of the present utility model.

Fig. 6 is the internal electrical structure second embodiment schematic diagram of the present utility model.

Label declaration:

10: electronic product 11:USB power line

111,112: one ends 30: mobile computer

31: input port 32:USB connectivity port

50: power supply changeover device 40: the charging transformer

41: charging transformer out-put supply joint 42:USB jack

51:USB connector 52: dc supply input mouth

53: dc power output end mouth 54: the power supply adjustment module

54A: DC-DC voltage regulator 54B: step-down rectifier module

541: input 542: secondary output

Embodiment:

See also Fig. 3 and shown in Figure 5, power supply changeover device 50 of the present utility model comprises: a universal serial bus (to call USB in the following text) connector 51; One direct current power input mouth 52; One direct current output port of power source 53; And one the power supply adjustment module 54.Wherein this dc supply input mouth 52 is imported a power supply, and it is divided into main power source and auxiliary power, and main power source can directly be electrically connected this dc power output end mouth 53, and auxiliary power then is electrically connected to USB connector 51; This adjustment module 54 of powering, can be the direct current voltage regulator 54A that always circulates, it has an input 541 and a secondary output 542, see also Fig. 5, and this input 541 is electrically connected this dc supply input mouth 52, and should be electrically connected this USB connector 51 by pair output 542, carry out step-down and export this pair output 542 in order to power supply these input 541 inputs.

During enforcement, be to use transformer 40 as application example, as shown in Figure 3 with a mobile computer (NB) charging.Be with mobile computer charging power connection 41 these dc supply input mouths 52 of insertion during use with transformer 40 outputs, one end 111 of one double end USB power line 11 is inserted this USB connector (being the USB jack among this embodiment) 51, and the power input mouth of other electronic product 10 of 112 insertions of other end desire power supply is to power to this electronic product 10 or to charge.Press this simultaneously, this mobile computer still can continue to use this dc power output end mouth (can be plug or power-line plug) 53 to power or charge.

Please referring to shown in Figure 4, this USB connector 51 also can be a USB plug or has the USB plug of electric wire, promptly be with this charging out-put supply joint 41 these dc supply input mouths 52 of insertion in the use with transformer 40, with this USB connector 51 (among this embodiment, be USB plug or attaching plug) insert the power input mouth of the USB on the electronic product 10, to power or to charge.In this simultaneously, mobile computer still can continue to use this dc power output end mouth (can be plug or power-line plug) 53 to power or charge.

The plug construction of this dc power output end mouth 53 can select be fit to the power input plug of power input mouth 31 patterns of this mobile computer 30, or use the changeable type plug, to cooperate the application of various different electrical power input ports 31.This dc supply input mouth 52 also can adopt changeable type, to cooperate the application of various charging with the charging transformer out-put supply joint 41 of transformer 40.

This DC-DC voltage regulator 54A can adopt: linear regulator (linear regulator) or switch type adjuster (switching regulator).Wherein, this switch type adjuster can use: DC-DC converter (DC/DCconverter) or adjustable type controller (switching controller), and to cooperate different electric current and voltage demands.

Please again referring to shown in Figure 6, the present invention also discloses another kind of power supply changeover device 50, and it comprises: a USB connector 51; One direct current power input mouth 52; One direct current output port of power source 53; And by the formed power supply adjustment module 54 of a step-down rectifier module 54B.Wherein, this step-down rectifier module 54B can be made up of at least one DC-DC voltage regulator and at least one rectifier, and have an input 541 and a secondary output 542, and this input 541 is electrically connected this dc supply input mouth 52, and should be electrically connected to this USB connector by pair output 542, in order to the power supply of being imported by this input 541 is carried out step-down and rectification and exports this pair output 542 to.Again, this dc power output end mouth 53 also can be electrically connected this step-down rectifier module 54B, use with the rectification that this out-put supply is provided, more can comprise a voltage stabilizing rectification module among this step-down rectifier module 54B in addition, it is connected electrically between dc supply input mouth 52 and the dc power output end mouth 53, with voltage and the electric current of stablizing out-put supply.

Claims

[claim 1] a kind of power supply changeover device, it is characterized in that: include a direct current power input mouth, a USB connector, a direct current output port of power source, reach a power supply adjustment module, this dc supply input mouth is in order to importing a direct current power supply, and it is divided into a main power source and an auxiliary power; This USB connector and this auxiliary power are electrically connected, in order to export a secondary current; This dc power output end mouth and this main power source are electrically connected to export a principal current; This power supply adjustment module has an input and a secondary output, and this input is electrically connected this dc supply input mouth, and should be electrically connected between this auxiliary power and this USB connector by the pair output, to export a secondary current.
[claim 2] power supply changeover device as claimed in claim 1 is characterized in that: described power supply adjustment module is made of the DC-DC voltage regulator.
[claim 3] power supply changeover device as claimed in claim 2 is characterized in that: described DC-DC voltage regulator is a linear regulator.
[claim 4] power supply changeover device as claimed in claim 2 is characterized in that: described DC-DC voltage regulator is the switch type adjuster.
[claim 5] power supply changeover device as claimed in claim 4 is characterized in that: described switch type adjuster is the adjustable type controller.
[claim 6] power supply changeover device as claimed in claim 4 is characterized in that: described switch type adjuster is the DC-DC converter.
[claim 7] power supply changeover device as claimed in claim 1 is characterized in that: described power supply adjustment module is made of the step-down rectifier module.
[claim 8] power supply changeover device as claimed in claim 7 is characterized in that: described step-down rectifier module is by at least one DC-DC voltage regulator, and at least one rectifier is formed.
[claim 9] power supply changeover device as claimed in claim 7 is characterized in that: be electrically connected with at least one voltage stabilizing rectification module between described dc supply input mouth and the dc power output end mouth, with voltage and the electric current of stablizing out-put supply.
[claim 10] power supply changeover device as claimed in claim 9 is characterized in that: described voltage stabilizing rectification module is arranged within the step-down rectifier module.
[claim 11] is characterized in that as claim 1 to 10 each described power supply changeover device: described dc power output end mouth and this dc supply input mouth are electrically connected with power line.
[claim 12] as claim 1 to 10 each described power supply changeover device, it is characterized in that: described dc power output end mouth has a plug construction.
[claim 13] is characterized in that as claim 1 to 10 each described power supply changeover device: described dc power output end mouth has a plug construction that has a power line.
[claim 14] as claim 1 to 10 each described power supply changeover device, it is characterized in that: described USB connector has a plug construction.
[claim 15] is characterized in that as claim 1 to 10 each described power supply changeover device: described USB connector has a plug construction that has a power line.
[claim 16] as claim 1 to 10 each described power supply changeover device, it is characterized in that: described USB connector has a jack structure.
[claim 17] is characterized in that as claim 1 to 10 each described power supply changeover device: the input of described dc supply input mouth links to each other with the output of charging with transformer.