Multifunctional Bluetooth sound equipment

Abstract

The utility model discloses multifunctional Bluetooth sound equipment, which comprises a charging and discharging interface, a charging and discharging management module, a voltage stabilizing module, a Bluetooth module and a power amplifier module, the charging and discharging interface is connected with an external power supply or electric equipment; the charging and discharging management module is respectively connected with the charging and discharging interface, the voltage stabilizing module, the power amplifier module and the lithium battery; the Bluetooth module is respectively connected with the voltage stabilizing module and the power amplifier module and is used for receiving an audio signal of the terminal and outputting the audio signal through the power amplifier module; the lithium battery adopts a large-capacity design, and integrates the function of the charger baby and the function of the Bluetooth sound box, thereby meeting the charging and long-time music playing requirements of electric equipment, reducing the number of equipment carried by a user, improving the travel convenience and the user experience, and having very good practicability.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment, and in particular to a multifunctional Bluetooth speaker. Background Technology

[0002] With the widespread use of smartphones, users' demands for device battery life and audio playback quality are increasing. Existing technologies use power banks to extend device battery life and Bluetooth speakers to enhance music playback. However, carrying multiple devices is not only inconvenient but also increases the burden on users. Therefore, there is an urgent need for a multi-functional Bluetooth speaker to solve the above problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a multi-functional Bluetooth speaker.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a multi-functional Bluetooth speaker, including a charging and discharging interface, a charging and discharging management module, a voltage regulator module, a Bluetooth module, and a power amplifier module;

[0005] The charging / discharging interface is connected to an external power source or electrical equipment.

[0006] The charge / discharge management module is connected to the charge / discharge interface, the voltage regulator module, the power amplifier module, and the lithium battery, respectively.

[0007] The Bluetooth module is connected to both the voltage regulator module and the power amplifier module to receive audio signals from the terminal and output them through the power amplifier module.

[0008] As one of the preferred embodiments of this utility model, the voltage regulator module includes a voltage regulator chip U3, resistors MR1, R8, and R10, and capacitors MC1-MC2. The VIN pin of the voltage regulator chip U3 is connected to the charge / discharge management module, one end of resistor MR1, one end of capacitor MC1, and the lithium battery, respectively. The EN pin of the voltage regulator chip U3 is connected to the other end of resistor MR1. The VOUT pin of the voltage regulator chip U3 is connected to one end of resistor R8, one end of capacitor MC2, and the Bluetooth module, respectively. The FB pin of the voltage regulator chip U3 is connected to one end of resistor R10 and the other end of resistor R8, respectively. The other ends of capacitor MC2, resistor R10, capacitor MC1, and the GND pin of the voltage regulator chip U3 are connected to the GND terminal.

[0009] As one of the preferred embodiments of this utility model, a multi-functional Bluetooth speaker also includes a wireless charging module connected to a charge / discharge management module for wirelessly charging electrical devices.

[0010] As a preferred embodiment of this utility model, the wireless charging module includes a wireless charging chip U4, a wireless charging coil L5, MOSFETs Q1-Q4, and a first filtering module. The input terminal of the wireless charging chip U4 is connected to the charge / discharge management module, and the output terminal of the wireless charging chip U4 is connected to the gates of MOSFETs Q1, Q2, Q3, and Q4, respectively. The sources of MOSFETs Q1 and Q2 are connected to the charge / discharge management module, and the drains of MOSFETs Q3 and Q4 are connected to the wireless charging chip U4. The drain of MOSFET Q2 is connected to the source of MOSFET Q4 and one end of the wireless charging coil L5, respectively. The other end of the wireless charging coil L5 is connected to the wireless charging chip U4, the drain of MOSFET Q1, and the source of MOSFET Q3 via the first filtering module.

[0011] As one of the preferred embodiments of this utility model, the first filtering module includes capacitors C12-C15 connected in parallel. One end of the parallel connection of capacitors C12-C15 is connected to one end of the wireless charging coil L5 and the wireless charging chip U4, respectively. The other end of the parallel connection of capacitors C12-C15 is connected to the drain of MOSFET Q1 and the source of MOSFET Q3, respectively.

[0012] As one of the preferred embodiments of this utility model, a multi-functional Bluetooth speaker also includes a second filtering module connected between the other end of the wireless charging coil L5 and the wireless charging chip U4.

[0013] In one preferred embodiment of this utility model, the second filtering module includes a diode D1, resistors R14-R17, and capacitors C20-C21. The anode of diode D1 is connected to the other end of the wireless charging coil L5. The cathode of diode D1 is connected to one end of resistor R14 and one end of resistor R15. The other end of resistor R14 is connected to the wireless charging chip U4, one end of resistor R16, and one end of capacitor C20. The other end of resistor R15 is connected to one end of resistor R17 and one end of capacitor C21. The other ends of resistor R16, capacitor C20, resistor R17, and capacitor C21 are connected to the GND terminal.

[0014] As one of the preferred embodiments of this utility model, a multi-functional Bluetooth speaker also includes a status indication module connected to a charge / discharge management module and / or a wireless charging module.

[0015] As one of the preferred embodiments of this utility model, a multi-functional Bluetooth speaker also includes a display module connected to the charge and discharge management module.

[0016] As one of the preferred embodiments of this utility model, the charging and discharging interface includes a USB-A interface and / or a USB-C interface.

[0017] The beneficial effects of this utility model are as follows: A multi-functional Bluetooth speaker includes a charging / discharging interface, a charging / discharging management module, a voltage regulator module, a Bluetooth module, and a power amplifier module; the charging / discharging interface is connected to an external power source or electrical device; the charging / discharging management module is connected to the charging / discharging interface, the voltage regulator module, the power amplifier module, and the lithium battery; the Bluetooth module is connected to the voltage regulator module and the power amplifier module, and is used to receive audio signals from the terminal and output them through the power amplifier module; the lithium battery adopts a large-capacity design, integrating the functions of a power bank and a Bluetooth speaker, meeting the charging needs of electrical devices and the need for long-term music playback, reducing the number of devices carried by users, improving travel convenience and user experience, and has excellent practicality. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a circuit diagram of a multi-functional Bluetooth speaker.

[0020] Figure 2 The circuit schematic for the charge / discharge management module;

[0021] Figure 3 This is the circuit schematic of the voltage regulator module;

[0022] Figure 4 This is the circuit schematic of the Bluetooth module;

[0023] Figure 5 This is the circuit schematic of the power amplifier module;

[0024] Figure 6 Circuit schematic for a wireless charging module;

[0025] Figure 7 The circuit schematic of the first part of the wireless charging module;

[0026] Figure 8 The circuit schematic for the second part of the wireless charging module;

[0027] Figure 9 This is the circuit schematic of the second filter module. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Reference Figures 1 to 9 A multi-functional Bluetooth speaker includes a charging / discharging interface 10, a charging / discharging management module 20, a voltage regulator module 30, a Bluetooth module 40, and a power amplifier module 50.

[0033] The charging / discharging interface 10 is connected to an external power source or electrical equipment.

[0034] The charge / discharge management module 20 is connected to the charge / discharge interface 10, the voltage regulator module 30, the power amplifier module 50, and the lithium battery, respectively.

[0035] The Bluetooth module 40 is connected to the voltage regulator module 30 and the power amplifier module 50 respectively, and is used to receive the audio signal of the terminal and output it through the power amplifier module 50.

[0036] 1) In this utility model, the lithium battery adopts a large-capacity design, which can be used as a power source for Bluetooth speakers and also as a power source for external electrical devices; specifically, the chip U1 in the charge and discharge management module 20 is the main control chip, and the USB-A interface is the external discharge interface. When the corresponding USB-A connector is inserted, the DMA pin and DPA pin of the USB connector communicate with pins 38 and 39 of the main control chip U1 to determine the external discharge voltage of the main control chip U1; the USB-C interface is the internal charging and external discharge interface. When the USB-C connector is inserted, the DMB pin, DPB pin, CC3 pin, and CC4 pin of the USB-C communicate with pins 44, 43, 42, and 45 of the main control chip U1 to determine the external discharge voltage or the internal charging voltage of the main control chip U1.

[0037] 2)Reference Figure 1 and Figure 3 In some embodiments, the voltage regulator module 30 includes a voltage regulator chip U3, resistors MR1, R8, and R10, and capacitors MC1-MC2. The VIN pin of the voltage regulator chip U3 is connected to the charge / discharge management module (20), one end of resistor MR1, one end of capacitor MC1, and the lithium battery, respectively. The EN pin of the voltage regulator chip U3 is connected to the other end of resistor MR1. The VOUT pin of the voltage regulator chip U3 is connected to one end of resistor R8, one end of capacitor MC2, and the Bluetooth module (40), respectively. The FB pin of the voltage regulator chip U3 is connected to one end of resistor R10 and the other end of resistor R8, respectively. The other end of capacitor MC2, the other end of resistor R10, the other end of capacitor MC1, and the GND pin of the voltage regulator chip U3 are connected to the GND terminal. The voltage regulator module 30 is used to step down the voltage of the lithium battery to the operating voltage required by the Bluetooth module 40.

[0038] 3)Reference Figure 1 and Figures 6-8In some embodiments, a multi-functional Bluetooth speaker further includes a wireless charging module 60 connected to a charge / discharge management module 20 for wirelessly charging the device. As a preferred embodiment of the wireless charging module 60, the wireless charging module 60 includes a wireless charging chip U4, a wireless charging coil L5, MOSFETs Q1-Q4, and a first filter module 61. The input terminal of the wireless charging chip U4 is connected to the charge / discharge management module 20, and the output terminal of the wireless charging chip U4 is connected to the gates of MOSFETs Q1, Q2, Q3, and Q4, respectively. The sources of MOSFETs Q1 and Q2 are connected to the charge / discharge management module 20, and the drains of MOSFETs Q3 and Q4 are connected to the wireless charging chip U4. The drain of MOSFET Q2 is connected to the source of MOSFET Q4 and one end of the wireless charging coil L5, respectively. The other end of the wireless charging coil L5 is connected to the wireless charging chip U4, the drain of MOSFET Q1, and the source of MOSFET Q3 via the first filter module 61.

[0039] Specifically, the wireless charging chip U4 communicates with the C-group interface of the main control chip U1 through pins CC1, CC2, DPC, and DMC to obtain the corresponding wireless charging output power. The wireless charging chip U4 is connected via pins DRV1 L and DRV1 L. The H pin, DRV2L pin, and DRV2H pin provide four outputs, driving MOSFETs Q1, Q2, Q3, and Q4 respectively. The drain of MOSFET Q2 and the source of MOSFET Q4 are connected to one end of the wireless charging coil L5. The drain of MOSFET Q1 and the source of MOSFET Q3 are connected to one end of the first filter module 61. The other end of the first filter module 61 is connected to the other end of the wireless charging coil L5. In some embodiments, the first filter module 61 includes capacitors C12-C15 connected in parallel. One end of the parallel connection of capacitors C12-C15 is connected to one end of the wireless charging coil L5 and the wireless charging chip U4, respectively. The other end of the parallel connection of capacitors C12-C15 is connected to the drain of MOSFET Q1 and the source of MOSFET Q3, respectively.

[0040] 4)Reference Figure 1 and Figure 9In some embodiments, a multi-functional Bluetooth speaker further includes a second filtering module 62 connected between the other end of the wireless charging coil L5 and the wireless charging chip U4. As a preferred embodiment of the second filtering module 62, the second filtering module 62 includes a diode D1, resistors R14-R17, and capacitors C20-C21. The anode of the diode D1 is connected to the other end of the wireless charging coil L5, and the cathode of the diode D1 is connected to one end of resistor R14 and one end of resistor R15. The other end of resistor R14 is connected to the wireless charging chip U4, one end of resistor R16, and one end of capacitor C20. The other end of resistor R15 is connected to one end of resistor R17 and one end of capacitor C21. The other ends of resistor R16, capacitor C20, resistor R17, and capacitor C21 are connected to the GND terminal.

[0041] Specifically, the other end of the wireless charging coil L5 is also connected to the anode of diode D1. Diode D1 is used as a detector. The detected signal is filtered by resistors R15, R17, C21, R14, R16 and C20, and then sent to the VDEM pin of the wireless charging chip U4 for communication to determine the charging power output to the device.

[0042] 5)Reference Figure 1 and Figures 4-5 In some embodiments, the power supply of the Bluetooth module MBT 1 is provided by a lithium battery after being regulated by the voltage regulator module 30. The PWRKEY pin of the Bluetooth module MBT 1 is connected to a button for pairing volume control, etc. The audio output of the Bluetooth module MBT 1 is connected to the input terminal of the power amplifier module 50 via capacitors C4 and C6 connected to resistors R5 and R7. The power amplifier chip U2 is a power amplifier chip with built-in boost function, which can adjust the power supply voltage according to the magnitude of the input audio signal. The larger the input audio signal, the higher the power supply voltage of the power amplifier chip U2, and the greater the output power of the power amplifier chip U2. The audio after being amplified by the power amplifier chip U2 is filtered by high frequency through inductors L2 and L4, capacitors C7 and C8, and then output to the speaker SPK for sound output.

[0043] 6)Reference Figures 1-2 and Figures 6-7 In some embodiments, a multi-functional Bluetooth speaker also includes a status indication module 70 connected to the charge / discharge management module 20 and / or the wireless charging module 60, which can indicate the Bluetooth connection status, battery level, charge / discharge status, etc.

[0044] 7)Reference Figure 1 In some embodiments, a multi-functional Bluetooth speaker also includes a display module 80 connected to the charge / discharge management module 20.

[0045] 8) The advantages of this utility model are: it adopts a large-capacity lithium battery design, integrates the power bank function with the Bluetooth speaker function, meets the charging needs of electrical devices and the long-term music playback needs, reduces the number of devices carried by users, improves travel convenience and user experience, and has very good practicality.

[0046] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A multi-functional Bluetooth speaker, characterized in that: It includes a charging / discharging interface (10), a charging / discharging management module (20), a voltage regulator module (30), a Bluetooth module (40), and a power amplifier module (50); The charging / discharging interface (10) is connected to an external power source or electrical equipment; The charge / discharge management module (20) is connected to the charge / discharge interface (10), the voltage regulator module (30), the power amplifier module (50), and the lithium battery, respectively. The Bluetooth module (40) is connected to the voltage regulator module (30) and the power amplifier module (50) respectively, and is used to receive the audio signal of the terminal and output it through the power amplifier module (50).

2. A multi-functional Bluetooth speaker according to claim 1, characterized in that: The voltage regulator module (30) includes a voltage regulator chip U3, resistors MR1, R8, and R10, and capacitors MC1-MC2. The VI and N pins of the voltage regulator chip U3 are connected to the charge / discharge management module (20), one end of resistor MR1, one end of capacitor MC1, and the lithium battery, respectively. The EN pin of the voltage regulator chip U3 is connected to the other end of resistor MR1. The VOUT pin of the voltage regulator chip U3 is connected to one end of resistor R8, one end of capacitor MC2, and the Bluetooth module (40), respectively. The FB pin of the voltage regulator chip U3 is connected to one end of resistor R10 and the other end of resistor R8, respectively. The other end of capacitor MC2, the other end of resistor R10, the other end of capacitor MC1, and the GND pin of the voltage regulator chip U3 are connected to the GND terminal.

3. A multi-functional Bluetooth speaker according to claim 1, characterized in that: It also includes a wireless charging module (60) connected to the charge and discharge management module (20) for wirelessly charging electrical devices.

4. A multi-functional Bluetooth speaker according to claim 3, characterized in that: The wireless charging module (60) includes a wireless charging chip U4, a wireless charging coil L5, MOSFETs Q1-Q4, and a first filter module (61). The input terminal of the wireless charging chip U4 is connected to the charge and discharge management module (20). The output terminal of the wireless charging chip U4 is connected to the gate of MOSFET Q1, the gate of MOSFET Q2, the gate of MOSFET Q3, and the gate of MOSFET Q4, respectively. The source of MOSFET Q1 and the source of MOSFET Q2 are connected to the charge and discharge management module (20). The drain of MOSFET Q3 and the drain of MOSFET Q4 are connected to the wireless charging chip U4. The drain of MOSFET Q2 is connected to the source of MOSFET Q4 and one end of the wireless charging coil L5, respectively. The other end of the wireless charging coil L5 is connected to the wireless charging chip U4, the drain of MOSFET Q1, and the source of MOSFET Q3 via the first filter module (61).

5. A multi-functional Bluetooth speaker according to claim 4, characterized in that: The first filtering module (61) includes capacitors C12-C15 connected in parallel. One end of the parallel connection of capacitors C12-C15 is connected to one end of the wireless charging coil L5 and the wireless charging chip U4, respectively. The other end of the parallel connection of capacitors C12-C15 is connected to the drain of MOSFET Q1 and the source of MOSFET Q3, respectively.

6. A multi-functional Bluetooth speaker according to claim 4, characterized in that: It also includes a second filter module (62) connected between the other end of the wireless charging coil L5 and the wireless charging chip U4.

7. A multi-functional Bluetooth speaker according to claim 6, characterized in that: The second filtering module (62) includes a diode D1, resistors R14-R17, and capacitors C20-C21. The anode of diode D1 is connected to the other end of the wireless charging coil L5. The cathode of diode D1 is connected to one end of resistor R14 and one end of resistor R15. The other end of resistor R14 is connected to the wireless charging chip U4, one end of resistor R16, and one end of capacitor C20. The other end of resistor R15 is connected to one end of resistor R17 and one end of capacitor C21. The other ends of resistor R16, capacitor C20, resistor R17, and capacitor C21 are connected to the GND terminal.

8. A multi-functional Bluetooth speaker according to claim 3, characterized in that: It also includes a status indication module (70) connected to the charge / discharge management module (20) and / or the wireless charging module (60).

9. A multi-functional Bluetooth speaker according to claim 1, characterized in that: It also includes a display module (80) connected to the charge / discharge management module (20).

10. A multi-functional Bluetooth speaker according to claim 1, characterized in that: The charging / discharging interface (10) includes a USB-A interface and / or a USB-C interface.

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