CN103972756B - A kind of USB charging connection wire that can countdown power-off - Google Patents

Abstract

The invention relates to a USB charging connection line capable of countdown power-off, which includes a USB plug end, a charging terminal and a connection line, and also includes a countdown self-power-off module, the connection line includes a charging line and a data line, and the charging The two ends of the cable and the data cable are respectively connected to the USB plug end and the charging terminal, and the countdown self-power-off module is connected to the charging line, and the countdown self-power-off module includes a time setting unit, a countdown unit, a display screen, digital signal generator, signal indicator light execution unit, red light indicator, green light light, circuit switch execution unit, manual connection button and circuit switch. Compared with the prior art, the present invention is convenient for users to set the charging time by themselves, provides safety for equipment charging, and is easy to carry.

Description

A USB charging cable capable of counting down and power off

technical field

The invention relates to a USB charging connection line, in particular to a USB charging connection line capable of counting down and power off.

Background technique

Nowadays, electronic products such as MP3, MP4, mobile phone, digital camera and tablet computer are very common in people's life. These electronic devices all have batteries. When the power in the batteries is sufficient, the devices can be used normally. When the power of the batteries is exhausted, the batteries of these devices need to be charged. At this time, relevant chargers will be used. Taking mobile phone chargers as an example, in addition to travel chargers and seat chargers, there is also a more convenient charger, that is, a USB mobile phone charger.

Many MP3 players, mobile phones, etc. are equipped with USB chargers now, and the USB data cable is used as the power supply line, and the charging device is connected to the USB power supply for charging. The structure of the charger is very simple, there is no large transformer, and it can charge most electrical appliances with standard sockets. It is much lighter than the original charger of the device, and is suitable for home travel. At the same time, the USB data cable can also be connected to the USB interface of the computer, and the computer can provide electricity, such as a mobile phone, etc., can be automatically charged by inserting the USB data cable into the USB interface of the computer. The USB charging unit does bring greater convenience to people's lives.

However, in daily life, many people do other things by themselves when using the USB power supply to charge related devices through the USB data cable, and fail to observe whether these devices are fully charged; some people sleep directly at night. At this time, let these devices have been charged until the next day, which can easily cause the batteries of these devices to be overcharged. The battery of these devices has been overcharged for a long time, and the battery with good quality has a short life at most. The battery with poor quality may generate a large amount of current instantaneously under certain temperature and poor contact conditions, causing spontaneous combustion or explosion. Up to now, there have been many incidents at home and abroad that use USB data cables to charge devices that have accidents during charging, causing property losses and threats to the lives of the parties involved. The existing USB charging connection cable cannot meet the requirement of automatic power-off after the device is charged for a certain period of time.

Contents of the invention

The object of the present invention is to provide a portable USB charging connection cable capable of counting down to power off in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A USB charging connection line capable of countdown power-off, including a USB plug end, a charging end and a connection line, and also includes a countdown self-power-off module, the connection line includes a charging line and a data line, and the charging line and data line Both ends of the line are respectively connected to the USB plug end and the charging end, and the countdown self-power-off module is connected to the charging line;

The USB plug end is connected to the power supply, the charging end is connected to the device to be charged for charging, and the countdown self-power-off module controls the connection and disconnection of the charging line for power transmission.

The countdown self-power-off module includes a time setting unit, a countdown unit, a display screen, a digital signal generator, a signal indicator light execution unit, a red indicator light, a green light indicator, a circuit switch execution unit, a manual connection button and a circuit switch , the time setting unit is connected to the countdown unit, the countdown unit is respectively connected to the display screen and the digital signal generator, and the digital signal generator is respectively connected to the signal indicator light execution unit and the circuit switch execution unit, and the described The signal indicator light execution unit is respectively connected to the red light and the green light, the circuit switch execution unit and the manual connection button are respectively connected to the circuit switch, and the circuit switch is connected to the charging line;

The countdown unit receives the set time information of the time setting unit and counts down, the display screen receives and displays the time information of the countdown unit, and at the same time manually connects the button to close the circuit switch, and the countdown unit generates a digital signal "1" through the digital signal generator, The execution unit of the signal indicator light sends out a charging instruction, and the red indicator light is on. When the countdown ends, the countdown unit generates a digital signal "0" through the digital signal generator, and the circuit switch execution unit sends an instruction to disconnect the circuit switch, and the circuit switch is disconnected. The signal light execution unit sends out a charging completion command, and the green indicator light is on.

Described display screen adopts LED display screen.

The shell of the countdown self-power-off module is a plastic shell or a plastic shell.

The USB plug end is a USB male head.

The charging end is a charging end of a mobile phone, a digital camera or a tablet computer.

Compared with the prior art, the present invention has the following advantages:

1) The present invention integrates the countdown self-power-off module and the portable USB connection line together, and has its own USB plug end and charging end as power input and output, so as to meet the situation that the user needs to charge the device normally through USB charging, and can After the charging device completes the charging under the set time, disconnect the power supply for charging the device in time, effectively avoiding the battery overcharging of the device, and providing safety for device charging.

2) The present invention can not only realize the high-speed data transmission function of the data line, but also realize the convenient charging function of the charging line, which is convenient for users to carry around, and is designed on a conventional USB data charging line to reduce production costs.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the countdown self-power-off module of the present invention;

Fig. 3 is the working flow chart of the present invention.

In the figure: 1, USB plug end 2, countdown self-power-off module 3, charging end 4, connecting wire 20, circuit switch 21, red indicator light 22, green indicator light 23, manual connection button 24, display screen 25, time setting Fixed unit 26, countdown unit 27, digital signal generator 28, signal lamp execution unit 29, circuit switch execution unit 41, charging line 42, data line.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

As shown in Figure 1, a USB charging cable that can count down to power off includes a USB plug end 1, a charging port 3 and a connecting line 4, and also includes a countdown self-power-off module 2, and the connecting line 4 includes a charging line 41 and data line 42, both ends of the charging line 41 and the data line 42 are respectively connected to the USB plug end 1 and the charging end 3, and the countdown self-power-off module 2 is connected to the charging line 41. The USB plug end is a USB male head, and the charging end is a mobile phone, digital camera or tablet charging end.

The USB plug end 1 is connected to the power supply, and the charging end 3 is connected to the device to be charged for charging. The countdown self-power-off module 2 controls the connection and disconnection of the charging line 41 for power transmission.

As shown in Figure 2, the countdown self-power-off module 2 includes a time setting unit 25, a countdown unit 26, a display screen 24, a digital signal generator 27, a signal indicator light execution unit 28, a red indicator light 21, a green indicator light 22, Circuit switch execution unit 29, manual connection button 23 and circuit switch 20, described time setting unit 25 is connected with countdown unit 26, and described countdown unit 26 is connected with display screen 24 and digital signal generator 27 respectively, and described digital The signal generator 27 is respectively connected to the signal indicator light execution unit 28 and the circuit switch execution unit 29, and the signal indicator light execution unit 28 is connected to the red indicator light 21 and the green indicator light 22 respectively, and the described circuit switch execution unit 29 is connected to the manual switch execution unit 29. The connection buttons 23 are all connected to the circuit switch 20 , and the circuit switch 20 is connected to the circuit of the charging line 41 . The display screen 24 adopts an LED display screen, and the shell of the countdown self-power-off module 2 is a plastic shell or a plastic shell, wherein the time setting unit 25 is in the form of button input, and the countdown unit 26, digital signal generator 27, and signal indication execution unit 28 , circuit switch execution unit 29 is made of single-chip microcomputer and surrounding circuit thereof, and is integrated on the circuit board with time setting unit 25, display screen 24, red indicator light 21, green indicator light 22, manual connection button 23, circuit switch 20.

As shown in Figure 3, the workflow of the present invention is as follows:

Step S1: The user connects digital products such as mobile phones, digital cameras or tablet computers that need USB charging to the charging terminal 3 of the present invention, and connects the USB plug terminal 1 of the present invention to a power source, such as a USB interface of a computer;

Step S2: the user sets the time required for charging the mobile phone to the countdown unit 26 through the time setting unit 25 of the countdown self-power-off module 2, and starts to count down, and the set time is counted down in real time on the display screen 24;

Step S3: When the countdown starts, the user closes the circuit switch 20 through the manual connection button 23 of the countdown self-power-off module 2, and the countdown unit 26 generates a digital signal "1" through the digital signal generator 27, and then executes to the signal indicator light The unit 28 issues a charging command, and the red indicator light 21 is on, which means that the power supply is supplying power to the charging device through the present invention;

Step S4: When the countdown is completed, the countdown unit 26 of the power-off module 2 generates a digital signal "0" through the digital signal generator 27, and then sends an instruction to disconnect the circuit switch 20 to the circuit switch execution unit 29, and the circuit switch 20 Perform a disconnection operation, and at the same time send a charging completion command to the signal light execution unit 28, and the green indicator light 22 is on, which means that the charging device has completed the charging process under the set time.

In this way, the charged device is charged within the set time, and after the set time is over, the countdown will cut off the power supply to the charged device in time from the power-off module 2, which can effectively avoid the battery overcharging of the device and improve the battery life of the device. It is safe to charge the device, and it is easy to carry.

Claims (5)

1. a USB charging connection wire that can countdown power-off, comprises USB plug end (1), charging end (3)And connecting line (4), it is characterized in that, also comprise countdown Self-disconnecting module (2), described connecting line (4)Comprise charging wire (41) and data wire (42), described charging wire (41) and data wire (42) two ends are divided equallyDo not connect USB plug end (1) and charging end (3), described countdown Self-disconnecting module (2) is linked into fillsOn electric wire (41) circuit, USB plug end (1) connects power supply, and charging end (3) connect charging equipment,Charge, countdown Self-disconnecting module (2) is controlled the connecting and disconnecting of the charging wire (41) of transmission of electricity;

Described countdown Self-disconnecting module (2) comprise time setting unit (25), countdown unit (26),Display screen (24), digital signal generator (27), signal lamp performance element (28), red led (21),Green indicating lamp (22), contactor performance element (29), manually connect button (23) and contactor (20),Described time setting unit (25) connects countdown unit (26), and described countdown unit (26) respectivelyConnect display screen (24) and digital signal generator (27), described digital signal generator (27) connects respectivelyConnect signal lamp performance element (28) and contactor performance element (29), described signal lamp is carried outUnit (28) connects respectively red led (21) and green indicating lamp (22), and described contactor is carried outUnit (29) and manual button (23) connecting circuit switch (20) respectively, the described contactor (20) of being connectedBe linked on charging wire (41) circuit;

The setting-up time information of countdown unit (26) time of reception setup unit (25) is also carried out countdown, aobviousShow that screen (24) receives the temporal information of countdown unit (26) and shows, manually connect button (23) will simultaneouslyContactor (20) closure, countdown unit (26) produce data signal by digital signal generator (27)" 1 ", signal lamp performance element (28) just sends in charging instruction, and red led (21) is bright, when fallingWhen timing finishes, countdown unit (26) produce data signal " 0 ", electricity by digital signal generator (27)Way switch performance element (29) sends circuit disconnect switch instruction, and contactor (20) disconnects, synchronous signal lampPerformance element (28) sends the instruction of having charged, and green indicating lamp (22) is bright.

2. a kind of USB charging connection wire that can countdown power-off according to claim 1, is characterized in that,Described display screen (24) adopts LED display.

3. a kind of USB charging connection wire that can countdown power-off according to claim 1, is characterized in that,The shell of described countdown Self-disconnecting module (2) is glue shell or plastic housing.

4. a kind of USB charging connection wire that can countdown power-off according to claim 1, is characterized in that,Described USB plug end (1) is USB male.

5. a kind of USB charging connection wire that can countdown power-off according to claim 1, is characterized in that,Described charging end (3) is mobile phone, digital camera or panel computer charging end.