CN2919602Y - USB wire with function of charging protection - Google Patents
USB wire with function of charging protection Download PDFInfo
- Publication number
- CN2919602Y CN2919602Y CN 200620002980 CN200620002980U CN2919602Y CN 2919602 Y CN2919602 Y CN 2919602Y CN 200620002980 CN200620002980 CN 200620002980 CN 200620002980 U CN200620002980 U CN 200620002980U CN 2919602 Y CN2919602 Y CN 2919602Y
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- circuit
- module
- circuit module
- current
- maximum load
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a USB cable with charging protection comprising a DC input USB port, a DC voltage conversion module with USB port for electric property DC input, a load current detection circuit module of the electric property DC voltage conversion module, the overload protection circuit module of the electric property DC voltage conversion module and the load current detection circuit module and a maximum load limit circuit module, the DC output USB ports of the electric property DC voltage conversion module, the overload protection circuit module and the maximum load limit circuit module.
Description
Technical field
The utility model is meant a kind of USB cable with charge protection especially about a kind of USB cable.
Background technology
Along with development of electronic technology, various electronic products have become the necessary article in people's daily life, such as mobile phone, MP3, digital camera etc.Yet all electronic products all need the power supply supply to work, and generally are to adopt rechargeable battery to power, and for the miniaturization of volume, the capacity of battery also is more limited usually, and this makes people often use up and need charge because of the electric weight of battery.Common charging modes is to charge by connecing civil power at present, promptly in indoor or fixing building.This is very inconvenient for the people of the outside of being everlasting.
Along with popularizing of computer, especially notebook is extensive use of, provide the power supply of battery charge very common with USB interface, even say that at present the mode that obtains power supply by USB interface forms a kind of trend in electronic product, a lot of electronic products also are equipped with the connecting line of an available USB port power taking when being equipped with a commercial power charged power line, so that its USB port that can see through computer is powered.
In addition, the automobile cigarette lighter socket is equipped with as a kind of standard of automobile, and the voltage that is used to provide direct current 12V is given cigar lighter.Along with popularizing of automobile, provide charge power supply of battery also much more day by day to see with the automobile cigarette lighter socket, No. 200520129647.0 Chinese patent application that proposed on October 27th, 2005 as the China invites the person, it changes the connector of A type USB female seat interface about a kind of automobile cigarette lighter socket, the user can use the USB cable to connect this connector, thereby easily battery is charged.
Yet; the prior USB cable is a simple interface connecting line; only can play the effect that connects with conduction; thereby can not guarantee that charging current is in maximum charging current; obviously this can not play the effect of protection to rechargeable battery, is unfavorable for guaranteeing the useful life of rechargeable battery, and is opposite; under the situation of some voltages or current anomaly, also can directly cause the damage of battery.
Therefore, the prior USB cable is further improved at present.
Summary of the invention
Therefore; the purpose of this utility model is to provide a kind of USB cable with charge protection; which is provided with load current circuit for detecting module and overload protecting circuit and maximum load and limit circuit module, can not only realize overload protection, and help guaranteeing the normal useful life of battery.
For being implemented in above-mentioned purpose; the utility model provides a kind of USB cable with charge protection, and it comprises: the overload protecting circuit and the maximum load of load current circuit for detecting module, electric connection direct current input USB port and the load current circuit for detecting module of direct current input USB port, electric connection direct current input USB port limits circuit module, reaches the direct current output USB port that electrically connects load current circuit for detecting module and overload protecting circuit and maximum load qualification circuit module.
Described USB cable with charge protection wherein, also comprises the direct voltage modular converter that is electrically connected between direct current input USB port and the load current circuit for detecting module.
Described USB cable with charge protection, wherein, this direct voltage modular converter is for converting the input voltage of external power source to the direct voltage modular converter of the acceptable voltage of load.
Described USB cable with charge protection, wherein, this overload protecting circuit and maximum load limit circuit module and electrically connect this direct voltage modular converter.
Described USB cable with charge protection, wherein, this overload protecting circuit and maximum load limit circuit module and do discontinuous power supply and drop to circuit module below the maximum load current up to charging current for starting current-limiting function.
Described USB cable with charge protection, wherein, this overload protecting circuit and maximum load limit circuit module for starting overload protection function to cut off the circuit module of charging output.
The USB cable that the utlity model has charge protection limits circuit module by load current circuit for detecting module and overload protecting circuit and maximum load are set thereon; thereby can not only realize overload protection; and can guarantee charging current below maximum charging current, thereby be beneficial to the normal useful life that guarantees battery.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended graphic only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Brief description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is the composition schematic diagram that the utlity model has the USB cable of charge protection.
Embodiment
For further setting forth the utility model is technological means and the effect that the predetermined purpose of realization is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, should obtain thus going deep into and concrete understanding, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.
Consult Fig. 1, the USB cable that the utlity model has charge protection comprises: direct current input USB port 2, the direct voltage modular converter 4 that electrically connects direct current input USB port 2, the load current circuit for detecting module 6 that electrically connects direct voltage modular converter 4, the overload protecting circuit and the maximum load that electrically connect direct voltage modular converter 4 and load current circuit for detecting module 6 limit circuit module 8, and electrically connect load current circuit for detecting module 6 and export USB port 10 with the overload protecting circuit and the direct current of maximum load qualification circuit module 8.
This direct voltage modular converter 4 can adopt prior art, and when the input voltage of external power source surpassed the rated voltage of load, this direct voltage modular converter 4 can convert the input voltage of external power source to the acceptable voltage of load.
This load current circuit for detecting module 6 limits circuit module 8 with overload protecting circuit and maximum load all can adopt prior art.This load current circuit for detecting module 6 can be detected the electric current of load, when the load current that detects is lower than maximum permission charging current value, keeps charged state, is filled full up to battery; When the load current that detects more than maximum charge allow current value, and below the overload protection value, overload protecting circuit and maximum load limit circuit module 8 and start current-limiting function, do discontinuous power supply, promptly power, detect, disconnect, power again, drop to maximum load (charging) below the electric current up to charging current; When the load current that detects when the overload protection electric current is above; this overload protecting circuit and maximum load limit circuit module 8 and start overload protection function, cut off charging (power supply) output, and need cut off the electricity supply or remove load this moment; could remove and cut off charging output, recover normal function.
This direct current input USB port 2 is the USB interface that has specification now with this direct current output USB port 10.
Execution mode as a kind of selection; the USB cable that the utlity model has charge protection can not be provided with above-mentioned direct voltage modular converter 4, directly is electrically connected to this direct current input USB port 2 and load current circuit for detecting module 6 and overload protecting circuit and maximum load are limited circuit module 8.
In sum; the USB cable that the utlity model has charge protection limits circuit module 8 by load current circuit for detecting module 6 is set with overload protecting circuit and maximum load thereon; thereby can not only realize overload protection; and can guarantee charging current below maximum charging current, thereby be beneficial to the normal useful life that guarantees battery.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection range of the utility model accompanying Claim.
Claims (6)
1, a kind of USB cable with charge protection; it is characterized in that, comprising: the overload protecting circuit and the maximum load of load current circuit for detecting module, electric connection direct current input USB port and the load current circuit for detecting module of direct current input USB port, electric connection direct current input USB port limits circuit module, reaches the direct current output USB port that electrically connects load current circuit for detecting module and overload protecting circuit and maximum load qualification circuit module.
2, the USB cable with charge protection according to claim 1 is characterized in that, also comprises the direct voltage modular converter that is electrically connected between direct current input USB port and the load current circuit for detecting module.
3, the USB cable with charge protection according to claim 2 is characterized in that, this direct voltage modular converter is for converting the input voltage of external power source to the direct voltage modular converter of the acceptable voltage of load.
4, the USB cable with charge protection according to claim 2 is characterized in that, this overload protecting circuit and maximum load limit circuit module and electrically connect this direct voltage modular converter.
5, the USB cable with charge protection according to claim 4; it is characterized in that this overload protecting circuit and maximum load limit circuit module and do discontinuous power supply and drop to circuit module below the maximum load current up to charging current for starting current-limiting function.
6, the USB cable with charge protection according to claim 4 is characterized in that, this overload protecting circuit and maximum load limit circuit module for starting overload protection function to cut off the circuit module of charging output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620002980 CN2919602Y (en) | 2006-03-15 | 2006-03-15 | USB wire with function of charging protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620002980 CN2919602Y (en) | 2006-03-15 | 2006-03-15 | USB wire with function of charging protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919602Y true CN2919602Y (en) | 2007-07-04 |
Family
ID=38217422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620002980 Expired - Fee Related CN2919602Y (en) | 2006-03-15 | 2006-03-15 | USB wire with function of charging protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919602Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373396B (en) * | 2007-08-24 | 2013-05-29 | 新唐科技股份有限公司 | Current limiting protecting apparatus and current limiting protecting method |
-
2006
- 2006-03-15 CN CN 200620002980 patent/CN2919602Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373396B (en) * | 2007-08-24 | 2013-05-29 | 新唐科技股份有限公司 | Current limiting protecting apparatus and current limiting protecting method |
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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: 20070704 Termination date: 20140315 |