CN2566470Y

CN2566470Y - USB charger with timing function

Info

Publication number: CN2566470Y
Application number: CN 02253811
Authority: CN
Inventors: 马雷; 谢洪潮
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2002-08-29
Filing date: 2002-08-29
Publication date: 2003-08-13
Anticipated expiration: 2012-08-29

Abstract

The utility model relates to a USB charger with a timing function. The utility model comprises a computer universal USB interface, a USB interface connecting line, a timer and a connecting line for a charging interface, wherein, a power anode and a power cathode of the computer universal USB interface are respectively connected with an anode input end and a cathode input end by the USB interface connecting line; the anode output end and the cathode output end of the timer are respectively connected with the charging interface by the connecting line for a charging interface. The design adopted by the utility model can not only conveniently charge equipment, such as a mobile phone, or a PDA, etc. which use lithium ion batteries but also can accurately control the charging time and avoid long-time excessive charging after the electric quantity of the batteries is full so as to achieve the purposes of energy saving and extension of the service life of the batteries. The utility model has the advantages of novel design, convenience, high reliability and originality.

Description

The USB charger that has timing function

Technical field

The utility model relates to the USB charger of mobile portable equipments such as a kind of general mobile phone, PDA, particularly relates to a kind ofly can controlling the charging interval and preventing the USB charger that has timing function of overshoot.

Background technology

Standard USB interface is the standard data delivery interface of PC computer general-purpose, is divided into two kinds of v1.0 version and v2.0 versions.No matter on desktop PC and notebook computer, generally have plural USB interface at least, when computer is normal start after, the USB interface of these two kinds of versions can both provide the 5V direct voltage, and maximum supply current is 500mA.

More common mobile phone and PDA equipment on the present market, what adopt as the most products of companies such as MOTOROLA, NOKIA, ERICSSON, association and PALM is lithium battery, lithium battery and ni-mh compare with Ni-Cr battery that not only to have a volume little, the advantage that MAH is big, main is, lithium battery does not have memory effect, can charge to battery at any time, does not influence the capacity and the useful life of battery.Normal voltage during lithium cell charging is between 4.1V～5.5V, and charging current also about 500mA, therefore utilizes USB interface to charge directly for these equipment usually.

Also have similar USB charger selling now on the market, but its function ratio being more single, only is with the power supply taking-up of USB interface, links to each other with the plug of charger.

Generally speaking, lithium battery electric weight dash full after, just be referred to as overshoot if continue charging, overshoot is to shortening the useful life of lithium battery for a long time.

This shows that above-mentioned prior USB charger still has many defectives, and demands urgently further being improved.

Because the defective that above-mentioned prior USB charger exists, the inventor is actively studied innovation, through constantly studying, designing based on abundant practical experience and professional knowledge, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.

Summary of the invention

Usually the electric current with the 500mA size charges to mobile phone and PDA, and according to varying in size of battery capacity, the charging interval is generally between 1.5～2.5 hours.

Therefore, main purpose of the present utility model is to provide a kind of USB charger that has timing function, externally the charging interval of USB charger is controlled with timer, not only can accurately control the charging interval, avoid long-time overshoot to damage battery, and save the energy that relies on battery powered notebook computer, extend working time.

The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions.According to a kind of USB charger that has timing function that the utility model proposes, it comprises computer general-purpose USB interface, USB interface line, timer and charging inlet line, wherein: positive source in the USB interface and power cathode are connected to the electrode input end and the negative input of timer respectively by the USB interface line, the cathode output end of timer and cathode output end are connected to charging inlet by the charging inlet line respectively, timer can be a mechanical timer, also can be electronic timer.

The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the utility model adopts such design not only can be very easily the equipment of use lithium ion batteries such as mobile phone or PDA to be charged, and can accurately control the charging interval, avoid battery electric quantity to be full of the also long-time overshoot in back, save the energy and extending battery life ground purpose thereby reach.This modern design, convenient, reliable, have originality.

In sum, a kind of USB charger that has timing function of the utility model, have above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use, no matter and its structurally or bigger improvement is all arranged on the function, have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thus be suitable for practicality more, really be a new and innovative, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with the utility model preferred embodiment and conjunction with figs. describe in detail as after.

Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is the utility model charging process schematic diagram;

Fig. 2 is the utility model line schematic diagram.

Among the figure: 1.USB interface 2. positive sources (+5V) 3. power cathodes

4. timer electrode input end 5. timer negative inputs 6. timers

7. timer cathode output end 8. timer cathode output ends 9. charging inlets

10. portable computer 11. mobile phone 12.USB interface lines

13. charging inlet line

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of USB charger, structure, feature and the effect thereof that have timing function that the utility model proposes, describe in detail as after.

Because the USB interface of computer general-purpose has the structure and the size of standard, and two end connectors of USB line become A head and B head respectively, the A head is a flat, is connected with the computer standard USB interface; The B head is square, links to each other with external USB equipment.

The joint that the USB charger links to each other with computer is the A head, links to each other with PDA with mobile phone and then selects suitable plug for use according to the different definition of each company's different product.

USB interface A head has four lines, and wherein one is positive source, and voltage is+5V, and one is ground wire, and all the other two is holding wire.Timer has two binding posts, and when the timing knob was in original position, these two binding posts were for opening circuit; After the timing knob was twisted, when promptly timer was in definition status, these two binding posts were short circuit.

Therefore, a binding post of timer is linked to each other with the positive source of joint with the computer USB interface by lead, another root binding post links to each other with joint and mobile phone charging interface are anodal by lead, with lead computer USB interface ground wire is linked to each other with cell-phone charging mouth ground wire simultaneously and can finish charging function regularly.

When timer was in running order, the pin 4,5 of timer 6 was in conducting state with 7,8 respectively, at this moment the charger for mobile phone operate as normal; When timing arrives, pin 4 and 7 disconnects, and then charger for mobile phone is cut off the electricity supply, and charging finishes.

One section of the tie USB of will charging links to each other with the computer USB interface, and another section then links to each other with the charging inlet of mobile phone, sets the timing of timer then according to the required charging interval.This moment charger start working, reach the charging interval after timer cut off charging circuit automatically, avoid the battery of mobile phone overshoot.

So the technological innovation of this patent utility model that constitutes has many saving graces for the expert of the current same industry.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, but every technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims

1. USB charger that has timing function, it is characterized in that it comprises computer general-purpose USB interface (1), USB interface line (12), timer (6) and charging inlet line (13), wherein: positive source (2) in the USB interface (1) and power cathode (3) are connected to the electrode input end (4) and the negative input (5) of timer (6) respectively by USB interface line (12), the cathode output end (7) and the cathode output end (8) of timer (6) are connected to charging inlet by charging inlet line (13) respectively.