WO2017120752A1

WO2017120752A1 - Charging apparatus for vr glasses and mobile terminal

Info

Publication number: WO2017120752A1
Application number: PCT/CN2016/070643
Authority: WO
Inventors: 李刚; 张丰学
Original assignee: 深圳多哚新技术有限责任公司
Priority date: 2016-01-12
Filing date: 2016-01-12
Publication date: 2017-07-20

Abstract

A charging apparatus for VR glasses and a mobile terminal, comprising: a mobile terminal USB interface (1), a VR glasses charging interface (3) and an external power supply apparatus (2), wherein the mobile terminal USB interface (1) supplies power to VR glasses by means of the external power supply apparatus (2), or the mobile terminal USB interface (1) is electrically connected to the VR glasses charging interface (3), so that a mobile terminal supplies power to the VR glasses; an ID switching unit (23) is electrically connected to a mobile terminal wiring port (21) and a VR glasses end wiring port (22) respectively; and the ID switching unit (23) sets a voltage of an external power source (25) to be a mobile terminal charging voltage and a VR glasses power supply voltage, charges the mobile terminal by means of the mobile terminal wiring port (21), and supplies power to the VR glasses by means of the VR glasses end wiring port (22). The present invention prevents a mobile terminal from not being capable of being charged due to a voltage to the mobile terminal being too low caused by voltage reduction when a current flows through a diode by virtue of the high impedance of the diode, and a user also can perform charging while playing games.

Description

VR glasses and charging device for mobile terminal

Technical field

The present invention relates to the field of VR glasses, and in particular to a charging device for VR glasses and a mobile terminal.

Background technique

The VR glasses are equipped with a USB charging interface. When the voltage is too low, the charging function can be realized. Under normal circumstances, the mobile phone is connected with the VR glasses, and the mobile phone supplies power to the motherboard of the VR glasses through the USB interface. When the power of the mobile phone is insufficient, it can be connected to the external power supply through the USB interface on the VR glasses, and the current is input through the USB interface to supply power to the VR glasses while charging the mobile phone.

The traditional approach is to install a diode at the charging interface position, which can produce a single-pass, reverse-cut function, but the diode will generate voltage drop and power consumption. The current will generate a voltage drop of 0.35V, which will make the voltage of the mobile terminal and the VR glasses end. Below 4.5V, charging is not possible.

Summary of the invention

In order to overcome the above deficiencies in the prior art, an object of the present invention is to provide a charging device for a VR glasses and a mobile terminal, including: a USB interface of a mobile terminal, a charging interface of a VR glasses, and an external power supply device;

The external power supply device includes: a mobile terminal wiring port, a VR glasses end wiring port, an external power supply wiring port, and an ID switching unit;

The USB interface of the mobile terminal is electrically connected to the terminal of the mobile terminal, and the charging interface of the VR glasses is electrically connected to the terminal of the VR glasses, and the USB interface of the mobile terminal supplies power to the VR glasses through the external power supply device; Or the USB interface of the mobile terminal is electrically connected to the charging interface of the VR glasses, so that the mobile terminal supplies power to the VR glasses;

The output end of the ID switching unit is electrically connected to the mobile terminal wiring port and the VR glasses end wiring port, the external power supply terminal output end is electrically connected to the input end of the ID switching unit, and the external power supply terminal input end is connected to the external power supply. The ID switching unit is configured to set the external power supply voltage to the charging voltage of the mobile terminal and the power supply voltage of the VR glasses, and charge the mobile terminal through the terminal of the mobile terminal, and supply power to the VR glasses through the terminal port of the VR glasses.

Preferably, the method further includes: controlling a switch;

An input end of the control switch is electrically connected to an external power supply device, and an output end of the control switch is electrically connected to a USB interface of the mobile terminal and a charging interface of the VR glasses, wherein the control switch is used to respectively control the external power supply device and the mobile terminal And control the on and off between the external power supply device and the VR glasses.

Preferably, the method further includes: a voltage regulator;

The voltage regulator is electrically connected to the VR glasses terminal, and is configured to electrically connect the VR glasses terminal through the voltage regulator to the USB interface of the mobile terminal, or pass the VR glasses terminal through the voltage regulator respectively. The control switch is electrically connected to an external power supply device.

Preferably, the mobile terminal is provided with an energy storage device, an OTG module and an AOA module;

The OTG module of the mobile terminal is used to supply power to the VR glasses;

The AOA module of the mobile terminal is used to charge an energy storage device.

Preferably, the AOA module is provided with a charging circuit, and the charging circuit comprises: a field effect transistor 1, a field effect transistor 2, an inductor and a capacitor three;

The inductor and the capacitor three form an LC oscillating circuit;

The drain of the FET is connected to the gate of the FET, the source of the FET is grounded, the source of the FET is electrically connected to the energy storage device, and the drain of the FET is passed. The LC oscillating circuit is connected to the USB interface of the mobile terminal.

Preferably, the ID switching unit includes: a voltage pull-up module;

The voltage pulling module is used when the external power source is connected to the external power supply device through the external power source wiring port, so that the voltage of the mobile terminal wiring port is increased, and the external power source charges the mobile terminal.

Preferably, the ID switching unit includes: a power supply module;

The power supply module is configured to connect the external power supply to the external power supply device through the external power supply connection port, so that the external power supply supplies power to the VR glasses through the VR glasses end connection port.

Preferably, the ID switching unit includes: a voltage pull-down module;

The voltage pull-down module is configured to supply power to the VR glasses of the mobile terminal when the voltage of the mobile terminal is pulled down.

Preferably, the mobile terminal is a mobile phone, or a notebook, or a tablet computer, or a POS machine, or an on-board computer.

As can be seen from the above technical solutions, the present invention has the following advantages:

The USB interface of the mobile terminal supplies power to the VR glasses through an external power supply device, and the ID switching unit of the external power supply device is electrically connected to the mobile terminal wiring port and the VR glasses terminal wiring port respectively; the ID switching unit sets the external power supply voltage to the mobile terminal charging voltage and the VR. The glasses supply voltage, and charge the mobile terminal through the terminal of the mobile terminal, and supply power to the VR glasses through the terminal port of the VR glasses, thereby avoiding the voltage drop caused by the current passing through the diode due to the high impedance of the diode, resulting in the voltage to the mobile terminal. Low and not charging, it also allows users to charge while playing games.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present invention, the drawings used in the description will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, which are common to the prior art. For the personnel, other drawings can be obtained based on these drawings without paying creative labor.

1 is a schematic overall view of a charging device of a VR glasses and a mobile terminal;

2 is a schematic diagram of an embodiment of a charging device of a VR glasses and a mobile terminal;

3 is a schematic diagram of an embodiment of a VR glasses and a mobile terminal;

4 is a circuit diagram of a data transmission circuit of a mobile terminal;

Fig. 5 is a circuit diagram of a charging circuit of a mobile terminal.

detailed description

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the embodiments of the present invention will be clearly and completely described below using the specific embodiments and the accompanying drawings. The examples are only a part of the embodiments of the invention, but not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of this patent.

The embodiment provides a charging device for the VR glasses and the mobile terminal, as shown in FIG. 1 , comprising: a mobile terminal USB interface 1, a VR glasses charging interface 3, and an external power supply device 2;

The external power supply device 2 includes: a mobile terminal wiring port 21, a VR glasses end wiring port 22, an external power supply terminal 24, and an ID switching unit 23;

The USB interface 1 of the mobile terminal is electrically connected to the terminal 21 of the mobile terminal, the charging interface 3 of the VR glasses is electrically connected to the terminal port 22 of the VR glasses, and the USB interface 1 of the mobile terminal supplies power to the VR glasses through the external power supply device 2; or the USB interface 1 of the mobile terminal Charging interface with VR glasses 3 Connect to enable the mobile terminal to supply power to the VR glasses;

It can be understood that the mobile terminal supplies power to the VR glasses in two ways. One is that the USB interface 1 of the mobile terminal is electrically connected to the charging interface 3 of the VR glasses; the other is that the mobile terminal and the VR glasses are respectively connected to the external power supply device 2, The mobile terminal supplies power to the VR glasses through the external power supply device 2.

The ID switching unit is electrically connected to the mobile terminal wiring port 21 and the VR glasses end wiring port 22, respectively;

The output end of the external power supply port 24 is electrically connected to the ID switching unit 23, the input end of the external power supply port 24 is connected to the external power source 25, and the ID switching unit 23 is configured to set the external power supply voltage to the charging voltage of the mobile terminal and the supply voltage of the VR glasses. The mobile terminal is charged through the mobile terminal wiring port 21, and the VR glasses are powered through the VR glasses terminal wiring port 22. This avoids the high voltage of the diode, causing a voltage drop across the diode, causing the voltage to the mobile terminal to be too low to charge.

In this embodiment, the mobile terminal includes a mobile phone, a notebook, a tablet computer, a POS machine, and an onboard computer.

In this embodiment, as shown in FIG. 2 and FIG. 3, further comprising: a control switch 4;

The input end of the control switch 4 is electrically connected to the external power supply device 2, and the output end of the control switch 4 is electrically connected to the mobile terminal USB interface 1, the VR glasses charging interface 3, respectively, and the control switch 4 is used for respectively controlling the external power supply device 2 and the mobile terminal. The on and off between the external power supply device 2 and the VR glasses are controlled.

The control switch 4 employs a power switch IC.

In this embodiment, in order to ensure the voltage stability of the mobile terminal to supply power to the VR glasses, and to ensure stable operation of the VR glasses, the utility model further comprises: a voltage regulator 5; the voltage regulator 5 is electrically connected with the VR glasses terminal port 3 for making the VR The glasses terminal 3 is electrically connected to the mobile terminal USB interface 1 through the voltage regulator 5, or the VR glasses terminal 3 is electrically connected to the VR glasses terminal 3 through the voltage regulator 5, or the VR glasses terminal 3 is provided. It is electrically connected to the control switch 4 through the regulator 5 .

In this embodiment, the ID switching unit 23 includes: a voltage pull-up module;

The voltage pull-up module is used when the external power source 25 is connected to the external power supply device 2 through the external power source connection port 24, so that the voltage of the mobile terminal terminal 1 is raised, and the external power source 25 charges the mobile terminal.

Specifically, when the voltage of the mobile terminal is lower than a set threshold, the mobile terminal is in an undervoltage state, and the mobile terminal needs to be charged. Since the mobile terminal is below the set threshold, the VR glasses cannot be powered. The external power source 25 is connected to the external power supply device 2 through the external power source connection port 24 to make the mobile terminal The voltage of the terminal port 1 rises, and the external power source 25 charges the mobile terminal.

The ID switching unit 23 includes: a power supply module; the power supply module is configured to connect the external power source 25 to the external power supply device 2 through the external power source connection port 24, and the external power source 25 to supply power to the VR glasses through the VR glasses terminal port 3.

While the external power source 25 charges the mobile terminal, the external power source 25 supplies power to the VR glasses through the VR glasses terminal port 3. Specifically, the charging voltage of the external power source 25 to the mobile terminal and the power supply voltage of the external power source 25 to the VR glasses are respectively divided by the ID switching unit 23, so that the charging voltage conforms to the charging voltage of the mobile terminal, and the power supply voltage conforms to the power supply voltage of the VR glasses. .

In this embodiment, the ID switching unit includes: a voltage pull-down module; and the voltage pull-down module is configured to supply power to the VR glasses of the mobile terminal when the voltage of the mobile terminal is pulled down.

In this embodiment, the data transmission circuit is as shown in FIG. 4, including: a transistor Q1, a resistor three R3, and a resistor four R4; a base of the transistor Q1 is connected to a control module of the mobile terminal, and an emitter of the transistor Q1 is grounded through a resistor three R3; The electrode is grounded through a resistor four R4.

The base of the transistor Q1 is connected to the control chip of the mobile terminal, so that the transistor Q1 transmits video data to the VR glasses according to the control of the mobile terminal control chip.

In this embodiment, as shown in FIG. 5, the AOA module is provided with a charging circuit, and the charging circuit includes: a field effect transistor 12, a field effect transistor 2, an inductor L, and a capacitor C3; the inductor L and the capacitor C3 constitute an LC oscillation. The circuit; the inductor L and the capacitor C3 form an LC oscillating circuit to reduce the ripple of the charging voltage and ensure the stability of the voltage when the external power source is charged to the mobile terminal.

The drain of the field effect transistor 12 is connected to the gate of the field effect transistor 2, the source of the field effect transistor 12 is grounded, the source of the field effect transistor 23 is electrically connected to the energy storage device 11, and the drain of the field effect transistor 2 is 13 The pole is connected to the mobile terminal USB interface 1 through the LC oscillating circuit.

The gate of the FET 12 is connected to the control chip of the mobile terminal. In the non-charging state, the FET 2 is disconnected, and the control chip of the mobile terminal detects that the USB terminal 1 of the mobile terminal is provided with a charging voltage, and the control chip of the mobile terminal controls the FET 12 to be turned on, and the FET 1 12 causes the FET 2 to conduct, and the charging current is charged to the energy storage device of the mobile terminal through the FET 23. When the energy storage device is charged to the set power, the control chip of the mobile terminal controls the FET 12 to be turned off, and the FET 12 controls the FET 2 to be disconnected, so that the external power source 25 stops charging the mobile terminal.

The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on It is a difference from other embodiments, and the same similar parts between the respective embodiments may be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims

A charging device for a VR glasses and a mobile terminal, comprising: a USB interface of a mobile terminal, a charging interface of a VR glasses, and an external power supply device;

The external power supply device includes: a mobile terminal wiring port, a VR glasses end wiring port, an external power supply wiring port, and an ID switching unit;

The USB interface of the mobile terminal is electrically connected to the terminal of the mobile terminal, and the charging interface of the VR glasses is electrically connected to the terminal of the VR glasses, and the USB interface of the mobile terminal supplies power to the VR glasses through the external power supply device; Or the USB interface of the mobile terminal is electrically connected to the charging interface of the VR glasses, so that the mobile terminal supplies power to the VR glasses;

The output end of the ID switching unit is electrically connected to the mobile terminal wiring port and the VR glasses end wiring port, the external power supply terminal output end is electrically connected to the input end of the ID switching unit, and the external power supply terminal input end is connected to the external power supply. The ID switching unit is configured to set the external power supply voltage to the charging voltage of the mobile terminal and the power supply voltage of the VR glasses, and charge the mobile terminal through the terminal of the mobile terminal, and supply power to the VR glasses through the terminal port of the VR glasses.
A charging device for a VR glasses and a mobile terminal according to claim 1, wherein

Also included: a control switch;

An input end of the control switch is electrically connected to an external power supply device, and an output end of the control switch is electrically connected to a USB interface of the mobile terminal and a charging interface of the VR glasses, wherein the control switch is used to respectively control the external power supply device and the mobile terminal And control the on and off between the external power supply device and the VR glasses.
A charging device for a VR glasses and a mobile terminal according to claim 2, wherein

Also included: a voltage regulator;

The voltage regulator is electrically connected to the VR glasses terminal, and is configured to electrically connect the VR glasses terminal through the voltage regulator to the USB interface of the mobile terminal, or pass the VR glasses terminal through the voltage regulator respectively. The control switch is electrically connected to an external power supply device.
A charging device for a VR glasses and a mobile terminal according to claim 1, wherein

The mobile terminal is provided with an energy storage device, an OTG module and an AOA module;

The OTG module of the mobile terminal is used to supply power to the VR glasses;

The AOA module of the mobile terminal is used to charge an energy storage device.
A charging device for a VR glasses and a mobile terminal according to claim 4, wherein

The AOA module is provided with a charging circuit, and the charging circuit comprises: a field effect transistor 1, a field effect transistor 2, an inductor and a capacitor three;

The inductor and the capacitor three form an LC oscillating circuit;

The drain of the FET is connected to the gate of the FET, the source of the FET is grounded, the source of the FET is electrically connected to the energy storage device, and the drain of the FET is passed. The LC oscillating circuit is connected to the USB interface of the mobile terminal.
A charging device for a VR glasses and a mobile terminal according to claim 1, wherein

The ID switching unit includes: a voltage pull-up module;

The voltage pulling module is used when the external power source is connected to the external power supply device through the external power source wiring port, so that the voltage of the mobile terminal wiring port is increased, and the external power source charges the mobile terminal.
A charging device for a VR glasses and a mobile terminal according to claim 6, wherein

The ID switching unit includes: a power supply module;

The power supply module is configured to connect the external power supply to the external power supply device through the external power supply connection port, so that the external power supply supplies power to the VR glasses through the VR glasses end connection port.
A charging device for a VR glasses and a mobile terminal according to claim 1, wherein

The ID switching unit includes: a voltage pull-down module;

The voltage pull-down module is configured to supply power to the VR glasses of the mobile terminal when the voltage of the mobile terminal is pulled down.
A charging device for a VR glasses and a mobile terminal according to claim 1, wherein

The mobile terminal is a mobile phone, or a notebook, or a tablet computer, or a POS machine, or an on-board computer.