CN105703436A - Charging interface of charging device and charging device - Google Patents

Abstract

The embodiment of the invention discloses a charging interface of a charging device and the charging device. The charging interface of the charging device comprises: the switch module and the USB interface are connected; the switch module comprises a first end, a second end, a control end and a grounding end; the first end is electrically connected with a positive data line end of the USB interface, the second end is electrically connected with a negative data line end of the USB interface, the control end is electrically connected with an output end of a communication module in the charging device, and the grounding end is grounded; and a positive data line end of the USB interface is electrically connected with a first data line end of the communication module, and a negative data line end of the USB interface is electrically connected with a second data line end of the communication module. The technical scheme of the embodiment of the invention expands the functions of the mobile equipment charger.

Description

Charging interface of charging device and charging device

technical field

Embodiments of the present invention relate to charging technology, and in particular to a charging interface of a charging device and a charging device.

Background technique

With the continuous development of science and technology, mobile devices such as mobile phones and tablet computers have become one of the indispensable tools for daily use because of their portability, strong display effect and rich functions.

At present, most mobile devices are powered by batteries. As the functions of the mobile devices increase, their power consumption increases greatly. Therefore, it is necessary to use a charger to charge the batteries. A commonly used charging method is charging through a Universal Serial Bus (Universal Serial Bus, USB) interface.

However, the national standard stipulates that the data line D+/D- line in the USB interface of the mobile device charger is short-circuited inside the adapter, which makes the mobile device charger only have a charging function, which greatly limits the function of the charger.

Contents of the invention

The invention provides a charging interface of a charging device and a charging device, which expand the function of a mobile device charger.

In a first aspect, an embodiment of the present invention provides a charging interface of a charging device, where the charging interface includes:

switch module and universal serial bus USB interface;

The switch module includes a first end, a second end, a control end and a ground end; wherein, the first end is electrically connected to the positive data line end of the USB interface, and the second end is electrically connected to the positive data line end of the USB interface. The negative data line terminal is electrically connected, the control terminal is electrically connected to the output terminal of the communication module in the charging device, and the ground terminal is grounded;

The positive data line end of the USB interface is electrically connected to the first data end of the communication module, and the negative data line end is electrically connected to the second data end of the communication module.

In the second aspect, the embodiment of the present invention also provides a charging device, the charging device includes:

A communication module and the charging interface described in any embodiment of the present invention;

Wherein, the communication module includes a first data terminal, a second data terminal and an output terminal, the first data terminal is electrically connected to the positive data line end of the USB interface of the universal serial bus, and the second data terminal is connected to the positive data line end of the USB interface. The negative data line end of the USB interface is electrically connected, and the output end is electrically connected to the control end of the switch module.

An embodiment of the present invention provides a charging interface of a charging device. The charging interface includes: a switch module and a universal serial bus USB interface, and the positive data of the USB interface can be controlled by controlling the opening or closing of the switch module. The disconnection or short-circuiting of the power line end and the negative data line end expands the function of the mobile device charger.

Description of drawings

FIG. 1 is a structural diagram of a charging interface of a charging device in Embodiment 1 of the present invention;

2 is a circuit diagram of a charging interface of a charging device in Embodiment 2 of the present invention;

Fig. 3 is a structural diagram of a charging device in Embodiment 3 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Embodiment one

FIG. 1 is a structural diagram of a charging interface of a charging device in Embodiment 1 of the present invention. As shown in FIG. 1 , the charging interface of the charging device includes: a switch module 110 and a USB interface 120 .

Wherein, the switch module 110 includes a first end, a second end, a control end and a ground end; wherein, the first end is electrically connected to the positive data line end D+ of the USB interface 120, and the second end is electrically connected to the positive data line end D+ of the USB interface. The negative data line terminal D- is electrically connected to the negative data line, the control terminal is electrically connected to the output terminal of the communication module in the charging device, and the ground terminal is grounded.

The positive data terminal D+ of the USB interface 120 is electrically connected to the first data terminal of the communication module, and the negative data terminal D- is electrically connected to the second data terminal of the communication module.

Wherein, the communication module controls the opening and closing of the switch module 110 by outputting a control signal through the output terminal, and then controls the disconnection or short-circuiting of the positive data line terminal D+ and the negative data line terminal D- of the USB interface 120 . Exemplarily, when the control signal is at a high level, the switch module 110 is closed, that is, the positive data line terminal D+ and the negative data line terminal D- of the USB interface 120 are short-circuited; at this time, the charged device detects that D+ and D- Turn on, set the current to be charged, and only charge. When the control signal is at a low level, the switch module 110 is disconnected, that is, the positive data line terminal D+ and the negative data line terminal D- of the USB interface 120 are disconnected; The data terminal D- communicates with the communication module in the charging device. The charging interface of this embodiment can provide a charging signal for the charged device, and can realize communication between the charging device and the charged device, which expands the functions of the charging device and improves user experience.

Optionally, the USB interface is a USB-A interface.

This embodiment provides a charging interface of a charging device, the charging interface includes: a switch module and a universal serial bus USB interface, the positive data line end of the USB interface can be controlled by opening or closing the switch module The disconnection or short connection of the electricity and the negative data line expands the function of the mobile device charger.

Embodiment two

On the basis of the above embodiments, this embodiment provides a charging interface of a charging device. Fig. 2 is a circuit diagram of a charging interface of a charging device in Embodiment 2 of the present invention. As shown in Fig. 2, the switch module 110 includes a first switch Q1, a first resistor R1 and a second resistor R2; wherein, the first switch The control end of Q1 is electrically connected to the output end of the communication module, the input end is electrically connected to the positive data line end D+ of the USB interface 120, and the output end is connected to the first end of the first resistor R1 and the negative data line end D- of the USB interface 120. Electrical connection; the second end of the first resistor R1 is electrically connected to the output end of the communication module and the first end of the second resistor R2 respectively; the second end of the second resistor R2 is grounded.

Wherein, the first switch Q1 may be a P-type metal-oxide-semiconductor field effect transistor P-MOSFET or an N-type metal-oxide-semiconductor field effect transistor N-MOSFET. Exemplarily, as shown in FIG. 2 , when the first switch transistor Q1 is a P-MOSFET, the output end of the communication module is connected to the gate of the first switch Q1 . When the output terminal of the communication module outputs a high level signal, the source and drain of the first switch Q1 are turned on, and the positive data line terminal D+ and the negative data line terminal D- of the USB interface 120 are short-circuited; when the When the output terminal of the communication module outputs a low-level signal, the source and drain ports of the first switch Q1, the positive data line terminal D+ and the negative data line terminal D− of the USB interface 120 are disconnected.

Optionally, as shown in FIG. 2 , the switch module 110 may further include: a second switch Q2, the output end of the second switch Q2 is electrically connected to the output end of the first switch Q1, and the input end is connected to the negative data line of the USB interface 120 Terminal D- is electrically connected, and the control terminal is electrically connected to the output terminal of the communication module.

Wherein, the second switch Q2 may be a P-MOSFET or an N-MOSFET. Exemplarily, as shown in FIG. 2 , when both the first switch Q1 and the second switch Q2 are P-MOSFETs, the output terminals of the communication module are connected to the gates of the first switch Q1 and the second switch Q2 respectively. When the output terminal of the communication module outputs a high-level signal, the source and drain of the first switch Q1 and the second switch Q2 are both turned on, and the positive data line terminal D+ and the negative data line terminal D- of the USB interface 120 are short-circuited. connected; when the output terminal of the communication module outputs a low-level signal, the source and drain of the first switch Q1 and the second switch Q2 are disconnected, and the positive data line terminal D+ and the negative data line terminal D- of the USB interface 120 disconnect. By using two switches, the current that the switch module 110 can withstand can be increased, and the working stability of the switching module 110 is improved, thereby improving the working stability of the charging interface.

In addition, the USB interface 120 may also include a positive power supply terminal Vbus and a power supply ground terminal GND; the positive power supply terminal Vbus is electrically connected to the positive pole of the power module in the charging device, and the power ground terminal GND is electrically connected to the negative pole of the power module.

Wherein, the positive terminal Vbus of the power supply is the positive output pole of the charging device, and the ground terminal GND of the power supply is the negative pole output of the charging device, providing charging current for the charged device.

This embodiment provides a charging interface of a charging device, the charging interface includes a switch module and a USB interface, wherein the switch module includes a first switch, a first resistor and a second resistor, by controlling the first switch Opening or closing can control the disconnection or short connection of the positive data line end and the negative data line end of the USB interface, which expands the function of the mobile device charger.

Embodiment three

Fig. 3 is a structural diagram of a charging device in Embodiment 3 of the present invention. As shown in Fig. 3 , the charging device includes: a communication module 310 and a charging interface 320 according to any embodiment of the present invention;

Wherein, the communication module 310 includes a first data terminal, a second data terminal and an output terminal, the first data terminal is electrically connected to the positive data line end D+ of the Universal Serial Bus USB interface 321, and the second data terminal is connected to the USB The negative data terminal D− of the interface 321 is electrically connected, and the output terminal is electrically connected to the control terminal of the switch module 322 .

Optionally, as shown in FIG. 2 , the charging device further includes: a power module 330 , the positive pole of the power module 330 is electrically connected to the positive power terminal Vbus of the USB interface 321 , and the negative pole is electrically connected to the power ground terminal GND of the USB interface 321 .

Optionally, the USB interface is a USB-A interface.

Optionally, the charging device is a mobile terminal charger. The charging device can also be a vehicle charging device, a mobile power supply, and the like.

This embodiment provides a charging device. By controlling the opening or closing of the switch module, the charging device can charge the device to be charged or communicate with the device to be charged, which enriches the functions of the charging device. functions to improve user experience.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (10)

1. A charging interface of a charging device, characterized in that, comprising: switch module and universal serial bus USB interface; The switch module includes a first end, a second end, a control end and a ground end; wherein, the first end is electrically connected to the positive data line end of the USB interface, and the second end is electrically connected to the positive data line end of the USB interface. The negative data line terminal is electrically connected, the control terminal is electrically connected to the output terminal of the communication module in the charging device, and the ground terminal is grounded; The positive data line end of the USB interface is electrically connected to the first data end of the communication module, and the negative data line end is electrically connected to the second data end of the communication module. 2. The charging interface of the charging device according to claim 1, wherein the switch module comprises a first switch, a first resistor and a second resistor; wherein, The control end of the first switch is electrically connected to the output end of the communication module, the input end is electrically connected to the positive data line end of the USB interface, and the output end is respectively connected to the first end of the first resistor and the The negative data line end of the USB interface is electrically connected; The second end of the first resistor is electrically connected to the output end of the communication module and the first end of the second resistor; The second end of the second resistor is grounded. 3. The charging interface of the charging device according to claim 2, wherein the switch module further comprises: The second switch, the output end of the second switch is electrically connected to the output end of the first switch, the input end is electrically connected to the negative data line end of the USB interface, and the control end is electrically connected to the output end of the communication module. connect. 4. The charging interface of the charging device according to claim 3, wherein the first switch and the second switch are P-type metal-oxide-semiconductor field effect transistors or N-type metal-oxide-semiconductor field effect transistors. effect transistor. 5. The charging interface of the charging device according to any one of claims 1-4, characterized in that, the USB interface further includes a power supply positive terminal and a power supply ground terminal; The positive terminal of the power supply is electrically connected to the positive pole of the power module in the charging device, and the ground terminal of the power supply is electrically connected to the negative pole of the power module. 6. The charging interface of the charging device according to claim 1, wherein the USB interface is a USB-A interface. 7. A charging device, characterized in that the charging device comprises: A communication module and the charging interface according to any one of claims 1-6; Wherein, the communication module includes a first data terminal, a second data terminal and an output terminal, the first data terminal is electrically connected to the positive data line end of the USB interface of the universal serial bus, and the second data terminal is connected to the positive data line end of the USB interface. The negative data line end of the USB interface is electrically connected, and the output end is electrically connected to the control end of the switch module. 8. The charging device according to claim 7, further comprising: A power supply module, the positive pole of the power supply module is electrically connected to the positive power supply terminal of the USB interface, and the negative pole is electrically connected to the power supply ground terminal of the USB interface. 9. The charging device according to claim 7, wherein the USB interface is a USB-A type interface. 10. The charging device according to any one of claims 6-9, wherein the charging device is a mobile terminal charger.