Multifunctional charging equipment

Abstract

The utility model discloses a multifunctional charging device which comprises an MCU controller, a first interface, a second interface, a third interface, a DC / DC boost-buck circuit, a USB AUDIO circuit, a battery and a loudspeaker, the first interface is an output port, the second interface and the third interface are charging input ports, and the first interface is an output port. The first interface, the second interface, the third interface and the DC / DC boost-buck circuit are respectively connected with the controller, the DC / DC boost-buck circuit is further connected with the first interface, the second interface, the third interface and the battery, and the first interface is connected with the loudspeaker through the USB AUDIO circuit. According to the utility model, the functionality of the mobile charging device is enriched, the charging and discharging endurance problem of the mobile playing device is solved, and the application problem that the mobile playing device uses USB digital-to-analog output audio (USB audio) while being charged can also be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to a multifunctional charging device. Background Art

[0002] Currently, mobile power supplies (such as power banks) on the market do not have audio functions due to the limitations of the USB protocol or the lack of a USB audio protocol. They can only solve the battery life problem of mobile playback devices (such as mobile phones).

[0003] For the sake of aesthetics, more and more mobile phones are combining charging and audio interfaces into a single USB interface. For example, models after the iPhone 7 have cancelled the 3.5mm audio interface, so you cannot charge your phone or other devices while listening to audio with headphones connected.

[0004] Mainstream all-in-one VR machines all come with a 3.5mm headphone output and a USB charging port. When used, headphones are connected, which makes it impossible to integrate the headphone with the VR due to the constraints of the headphone wire.

[0005] In summary, current mobile power supplies or smart terminals (such as mobile phones, VR all-in-one machines) cannot both provide fast charging and achieve USB digital-to-analog audio output (USB audio). Utility Model Content

[0006] The main purpose of the utility model is to propose a multifunctional charging device, aiming to enrich the functionality of mobile charging devices, so as to solve the charging and discharging endurance problems of mobile playback devices, as well as the application problem of using USB digital to analog audio output (USB audio) while charging the mobile playback device.

[0007] To achieve the above-mentioned purpose, the utility model proposes a multifunctional charging device, including: an MCU controller, a first interface, a second interface, a third interface, a DC / DC buck-boost circuit, a USB AUDIO circuit, a battery and a speaker, wherein the first interface is an output port, the second interface and the third interface are charging input ports, the first interface, the second interface, the third interface, and the DC / DC buck-boost circuit are respectively connected to the controller, the DC / DC buck-boost circuit is also connected to the first interface, the second interface, the third interface, and the battery, and the first interface is connected to the speaker through the USB AUDIO circuit.

[0008] A further technical solution of the utility model is that the first interface is a TYPE C male connector, which is used to output charging or discharging to an external device, and the first interface supports USB2.0 audio protocol and PD3.0 protocol fast charging.

[0009] A further technical solution of the present invention is that the second interface is a TYPE C female socket, which is used to connect a charging adapter and supports the QC3.0 / PD3.0 protocol.

[0010] A further technical solution of the present invention is that the third interface is a 3PIN magnetic connector for connecting a charging adapter and supports the PD3.0 protocol.

[0011] A further technical solution of the utility model is that the MCU controller is used to detect whether the first interface, the second interface, or the third interface is plugged into a charging adapter or an audio playback device, and turns on the corresponding protocol function to perform induced charging or output discharge, or turns on the USB audio protocol of the audio device so that the audio recognition reads the USB audio circuit to output an audio signal.

[0012] A further technical solution of the utility model is that the DC / DC buck-boost circuit is used to output discharge through the first interface.

[0013] A further technical solution of the utility model is that the battery is a battery pack or a battery cell, which is used to store electric energy and output to charge the device of the first interface when there is no power adapter.

[0014] A further technical solution of the utility model is that the USB AUDIO circuit is a standard USB2.0 USB audio circuit or chip. Under the control of the MCU controller, the corresponding protocol is enabled, and the audio device outputs the audio signal through the first interface through the USB audio circuit or chip.

[0015] The beneficial effects of the multifunctional charging device of the utility model are:

[0016] The utility model, through the above technical scheme, includes: an MCU controller, a first interface, a second interface, a third interface, a DC / DC buck-boost circuit, a USB AUDIO circuit, a battery and a speaker, wherein the first interface is an output port, the second interface and the third interface are charging input ports, the first interface, the second interface, the third interface, and the DC / DC buck-boost circuit are respectively connected to the controller, the DC / DC buck-boost circuit is also connected to the first interface, the second interface, the third interface, and the battery, the first interface is connected to the speaker through the USB AUDIO circuit, enriching the functionality of the mobile charging device, solving the charging and discharging endurance problem of the mobile playback device, and solving the application problem of the mobile playback device using USB digital-to-analog audio output (USB audio) while charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a circuit structure diagram of the multifunctional charging device of the utility model;

[0019] Figure 2 It is a schematic diagram of application scenarios of the multifunctional charging device of the utility model;

[0020] Figure 3 It is a schematic diagram of the principle of the multifunctional charging device of the utility model.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0025] The utility model proposes a multifunctional charging device, which can be applied to smart terminals such as handheld game consoles, mobile phones, laptops, tablet computers, VR headsets, etc. The utility model adds a USBAUDIO circuit on the basis of the original pure power supply, such as Figure 1 and Figure 2 As shown, in actual use, the battery life of the mobile playback device can be increased at any time, and the use of USB AUDIO limited by the USB port occupied by charging can be solved, which truly achieves and solves the application flexibility and demand of daily use of charging and audio at the same time.

[0026] Please refer to Figure 1 The utility model multifunctional charging device includes an MCU controller, a first interface 1, a second interface 2, a third interface 3, a DC / DC buck-boost circuit, a USB AUDIO circuit, a battery and a speaker. The MCU controller, the first interface 1, the second interface 2, the third interface 3, the DC / DC buck-boost circuit, the USB AUDIO circuit, the battery and the speaker are integrated on a PCBA board.

[0027] Among them, the first interface 1 is an output port, the second interface 2 and the third interface 3 are charging input ports, and the first interface 1, the second interface 2 and the third interface 3 can all adopt TYPE C interface.

[0028] The first interface 1, the second interface 2, the third interface 3, and the DC / DC buck-boost circuit are respectively connected to the controller, the DC / DC buck-boost circuit is also connected to the first interface 1, the second interface 2, the third interface 3, and the battery, and the first interface 1 is connected to the speaker through the USB AUDIO circuit.

[0029] The first interface 1 is a TYPE C male connector, which is used to charge or discharge the external device. The first interface 1 supports USB2.0 audio protocol and PD3.0 fast charging protocol. The first interface 1 is used to connect to smart terminals such as handheld game consoles, mobile phones, laptops, tablets, VR headsets, etc.

[0030] The second interface 2 is a TYPE C female socket, which is used to connect a charging adapter and supports the QC3.0 / PD3.0 protocol.

[0031] The third interface 3 is a 3PIN magnetic connector, which is used to connect a charging adapter and supports the PD3.0 protocol.

[0032] The MCU controller is used to detect whether the first interface 1, the second interface 2, or the third interface 3 is plugged into a charging adapter or an audio playback device, and to turn on the corresponding protocol function to perform decoy charging or output discharge, or to turn on the USB audio protocol of the audio device so that the audio recognition reads the USB audio circuit to output the audio signal.

[0033] The DC / DC buck-boost circuit is a DCDC circuit that boosts or reduces voltage, and is used to control the buck-boost circuit according to the fast charging specifications of the device or charging adapter during fast charging, and output discharge through the first interface 1.

[0034] The battery is a battery pack or a battery cell, which is used to store electric energy and output to charge the device of the first interface 1 when there is no power adapter, thereby realizing the function of a mobile power supply.

[0035] The USB AUDIO circuit is a standard USB 2.0 USB audio circuit or chip. Under the control of the MCU controller, the corresponding protocol is started, and the audio device outputs the audio signal through the first interface 1 through the USB audio circuit or chip.

[0036] The speaker is used to output or emit sound and play audio, and may be a speaker unit.

[0037] The following combination Figure 3 The working principle of the multifunctional charging device of the utility model is further explained.

[0038] The multifunctional charging device of the utility model can be used as a mobile power source (such as a power bank) and can also be used as a USB external device audio accessory. It can charge a playback device and can also output audio for connecting to headphones or speakers.

[0039] like Figure 3As shown, when the power output port (TYPE C male connector) is plugged into a mobile device (such as a mobile phone, tablet, or VR all-in-one machine), the MCU main controller will identify the charging and power compatibility and USB audio support information of the inserted mobile device through the CC communication line, and at the same time switch the audio of the device to the output port of the multifunctional charging device of the utility model through the USB protocol.

[0040] The MCU controller identifies the charging head information of power input port 1 and power input port 2 through the CC / DP / DM communication line, and automatically matches the charging heads that support the mainstream PD and QC fast charging protocols.

[0041] The MCU controller starts the L+MOS boost / buck 1 and L+MOS boost / buck 2 circuits according to the status. It can obtain battery discharge power information from L+MOS boost / buck 1 and battery charging power information from L+MOS boost / buck 2. The LDO voltage regulator chip is responsible for providing a regulated voltage to power the USB audio chip. The USB audio chip converts the digital audio signal obtained from the USB into an analog audio signal. The PCM lithium battery protection chip protects the battery cell from high voltage / overcurrent. The MOS switch acts as an input switch barrier. The toggle switch can switch the USB audio on and off. The MCU main controller can detect the temperature change of the thermistor, realize the over-temperature charging mechanism, and stop all work to protect it. The 4 LEDs can display real-time power indication. The speaker can be a 3.5mm audio interface or a speaker unit.

[0042] The multifunctional charging device of the utility model can be understood as the integration of a mobile power supply with dual PD input and a USB audio circuit. When used, the TYPE C female socket and the magnetic connector are connected to the charging adapter, and the PCBA module of the utility model is connected through the TYPE C line. The module has an onboard battery, and the TYPE C line male head is output to the mobile playback device. At this time, the application can not only charge the battery, but also charge the playback device while playing the output audio signal. The existing standard PD fast charging protocol technology does not include an audio protocol. Therefore, the playback device is in slave mode when it is in the role of the power receiving end, and will not read the USB AUDIO sound card device in host mode. This is a problem of the master / slave mode state, and it is also the difficulty of this technology. The utility model uses the CC communication line of the TYPE C interface to add dual TYPE C DRP on the basis of the PD protocol Bridge device, turns on the Power Negotiation data packet transparent transmission function, realizes the Data Role switching function, and allows the audio device to enter ALT MODE through VDM negotiation, so that the playback device can switch between master / slave roles when receiving power, and actively identify and read the output audio of the USB AUDIO audio peripheral device.

[0043] The beneficial effects of the multifunctional charging device of the utility model are:

[0044] The utility model, through the above technical scheme, includes: an MCU controller, a first interface, a second interface, a third interface, a DC / DC buck-boost circuit, a USB AUDIO circuit, a battery and a speaker, wherein the first interface is an output port, the second interface and the third interface are charging input ports, the first interface, the second interface, the third interface, and the DC / DC buck-boost circuit are respectively connected to the controller, the DC / DC buck-boost circuit is also connected to the first interface, the second interface, the third interface, and the battery, the first interface is connected to the speaker through the USB AUDIO circuit, enriching the functionality of the mobile charging device, solving the charging and discharging endurance problem of the mobile playback device, and solving the application problem of the mobile playback device using USB digital-to-analog audio output (USB audio) while charging.

[0045] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A multifunctional charging device, characterized in that: include: MCU controller, a first interface, a second interface, a third interface, a DC / DC buck-boost circuit, a USB AUDIO circuit, a battery and a speaker, wherein the first interface is an output port, the second interface and the third interface are charging input ports, the first interface, the second interface, the third interface, and the DC / DC buck-boost circuit are respectively connected to the controller, the DC / DC buck-boost circuit is also connected to the first interface, the second interface, the third interface, and the battery, and the first interface is connected to the speaker through the USB AUDIO circuit.

2. The multifunctional charging device according to claim 1, characterized in that: The first interface is a TYPE C male connector, which is used to output charging or discharging to an external device. The first interface supports USB2.0 audio protocol and PD3.0 protocol fast charging.

3. The multifunctional charging device according to claim 1, characterized in that: The second interface is a TYPE C female socket, which is used to connect a charging adapter and supports QC3.0 / PD3.0 protocol.

4. The multifunctional charging device according to claim 1, characterized in that: The third interface is a 3PIN magnetic connector, which is used to connect the charging adapter and supports the PD3.0 protocol.

5. The multifunctional charging device according to claim 1, characterized in that: The MCU controller is used to detect whether the first interface, the second interface, or the third interface is plugged into a charging adapter or an audio playback device, and to turn on the corresponding protocol function to perform induced charging or output discharge, or to turn on the USB audio protocol of the audio device so that the audio recognition reads the USB audio circuit to output the audio signal.

6. The multifunctional charging device according to claim 1, characterized in that: The DC / DC buck-boost circuit is used for outputting discharge through the first interface.

7. The multifunctional charging device according to claim 1, characterized in that: The battery is a battery pack or a battery cell, which is used to store electric energy and output to charge the device of the first interface when there is no power adapter.

8. The multifunctional charging device according to claim 1, characterized in that: The USB AUDIO circuit is a standard USB 2.0 USB audio circuit or chip. Under the control of the MCU controller, the corresponding protocol is started, and the audio device outputs the audio signal through the first interface through the USB audio circuit or chip.

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