CN201821143U - USB (universal serial bus) charge and discharge device - Google Patents
USB (universal serial bus) charge and discharge device Download PDFInfo
- Publication number
- CN201821143U CN201821143U CN2010205772142U CN201020577214U CN201821143U CN 201821143 U CN201821143 U CN 201821143U CN 2010205772142 U CN2010205772142 U CN 2010205772142U CN 201020577214 U CN201020577214 U CN 201020577214U CN 201821143 U CN201821143 U CN 201821143U
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- CN
- China
- Prior art keywords
- usb
- charge
- power supply
- discharge device
- circuit
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- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a USB (universal serial bus) charge and discharge device, which comprises a plug connected into a power supply, wherein the plug is connected with a step-down circuit and a rectifier circuit; the rectifier circuit is connected with a rechargeable battery and a USB interface; the step-down circuit comprises a resistor R1 and a capacitor C1, which are connected in parallel; and the rectifier circuit comprises diodes D1, D2, D3 and D4, which are in reverse connection, and the rectifier circuit is further connected with an LED (light-emitting diode) indicator lamp for displaying charge and discharge processes. Compared the power supply through a computer, the device is small in volume and convenient to carry, can be used as a USB circuit, and further has electric power storage function; when in absence of the power supply, the device can be used for power supply for a USB product.
Description
Technical field
The utility model relates to charging device, is meant a kind of USB charge and discharge device especially.
Background technology
In electronic product, the use of computer is more and more general, because computer has USB interface, the low electronic product of a lot of power consumptions is supported the USB power supply, as products such as USB desk lamp, USB fan, USB after ski shoes, in use, if after providing the computer of power supply to break down, then these electronic products can't use; In addition, the user in using the process of these electronic products, if be inconvenient to carry computer, the also problem that can cause electronic product to use.
The utility model content
In view of this, the utility model is to provide a kind of USB charge and discharge device, is not having under the situation of power supply the problem that can't use with the equipment that solves the above-mentioned USB of needs power supply.
For addressing the above problem, the utility model provides a kind of USB charge and discharge device, comprising: insert the plug of power supply, described plug connects reduction voltage circuit and rectification circuit, and described rectification circuit connects rechargeable battery and USB interface.
Wherein, described reduction voltage circuit comprises:
Parallel resistor and electric capacity.
Wherein, described rectification circuit comprises:
Four diodes that oppositely connect mutually.
Wherein, described rectification circuit also connects the LED light that shows charge and discharge process.
Device in the utility model is compared with the computer power supply, and volume is little, is easy to carry, and can be used as the USB circuit and uses, and have storage function, when not having power supply, can be the power supply of USB product.
Description of drawings
Fig. 1 provides the circuit structure diagram of USB charge and discharge device for the utility model embodiment.
Embodiment
In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
Fig. 1 provides the circuit structure diagram of USB charge and discharge device for the utility model embodiment.
As shown in Figure 1, the USB charge and discharge device that provides of the utility model embodiment comprises: the attaching plug that is connected with circuit, reduction voltage circuit, rectification circuit, rechargeable battery and USB interface.
This device can be worked as the USB circuit and be used, and in use, attaching plug inserts 220V or 110V household electricity, after the step-down of electric current process reduction voltage circuit, carries out rectification by rectification circuit, at last by USB interface output and/or rechargeable battery charging.
Reduction voltage circuit adopts parallel resistor R1 and capacitor C 1 to form, and rectification circuit is that diode D1, the D2, D3, the D4 that oppositely connect form the output port serial connection charge battery DC3 and the USB interface of rectification circuit.
Rechargeable battery DC3 can adopt storage battery or Ni-MH battery to realize discharging and recharging, when rechargeable battery in charging and discharging process, the indicator light LED1 of rectification circuit parallel connection can luminous indication.
Device in the utility model is compared with the computer power supply, and volume is little, is easy to carry, and can be used as the USB circuit and uses, and have storage function, when not having power supply, can be the power supply of USB product.
The above only is the application's a preferred implementation, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be conspicuous to one skilled in the art, and defined herein General Principle can realize under the situation of the spirit or scope that do not break away from the application in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. a USB charge and discharge device is characterized in that, comprising: insert the plug of power supply, described plug connects reduction voltage circuit and rectification circuit, and described rectification circuit connects rechargeable battery and USB interface.
2. USB charge and discharge device according to claim 1 is characterized in that, described reduction voltage circuit comprises:
Parallel resistor (R1) and electric capacity (C1).
3. USB charge and discharge device according to claim 1 is characterized in that, described rectification circuit comprises:
Reverse diode (D1), diode (D2), diode (D3), the diode (D4) that connects.
4. USB charge and discharge device according to claim 1 is characterized in that described rectification circuit also connects the LED light that shows charge and discharge process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205772142U CN201821143U (en) | 2010-10-26 | 2010-10-26 | USB (universal serial bus) charge and discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205772142U CN201821143U (en) | 2010-10-26 | 2010-10-26 | USB (universal serial bus) charge and discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821143U true CN201821143U (en) | 2011-05-04 |
Family
ID=43919085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205772142U Expired - Fee Related CN201821143U (en) | 2010-10-26 | 2010-10-26 | USB (universal serial bus) charge and discharge device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108270273A (en) * | 2018-02-28 | 2018-07-10 | 北京国能电池科技股份有限公司 | Power supply |
-
2010
- 2010-10-26 CN CN2010205772142U patent/CN201821143U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108270273A (en) * | 2018-02-28 | 2018-07-10 | 北京国能电池科技股份有限公司 | Power supply |
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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: 20110504 Termination date: 20131026 |