A multifunctional smart sound box

Abstract

The utility model provides a kind of multifunctional intelligent sound box, applied to intelligent sound box technical field, including main control module, main control module is connected with power supply and control module, audio power amplifier module, temperature monitoring module respectively, power supply and control module includes power supply circuit, power management circuit and charging management circuit;Power supply circuit includes battery, power management circuit includes DC-DC conversion chip, the VDD pin of DC-DC conversion chip is connected with battery, OUT pin output conversion voltage is main control module power supply;Charging management circuit includes charging management chip, the BAT pin of charging management chip is connected with battery, PROG pin is connected with resistance R16, the other end of resistance R16 is grounded, the EN pin of charging management chip is connected with main control module by triode Q7.This multifunctional intelligent sound box realizes temperature monitoring, charging control, voltage conversion cooperation, improves the overall synergy and reliability of system.

Description

Technical Field

[0001] This utility model belongs to the field of smart speaker technology, and specifically relates to a multifunctional smart speaker. Background Technology

[0002] Speakers, as common audio output devices, are widely used in home entertainment, car playback, conference amplification, and outdoor scenarios. With the development of wireless communication and multimedia technologies, Bluetooth speakers have gradually become mainstream, enabling wireless audio playback through pairing with smart terminal devices. However, existing smart speakers lack effective coordination between their power supply systems and battery safety monitoring, specifically manifested in the following ways:

[0003] (1) The battery power supply voltage is unstable, which can easily lead to abnormal operation of the main control module and indirectly affect the stability of functions such as audio;

[0004] (2) During the charging process, the charging parameters (such as current) cannot be flexibly adjusted according to the battery characteristics, resulting in low charging efficiency or damage to battery life.

[0005] (3) The lack of real-time monitoring and linkage control of battery temperature poses a safety hazard due to battery overheating;

[0006] (4) The integration of the main control module with the power supply and charging module is low, and the control logic is scattered, which can easily lead to complex circuits and poor reliability. Utility Model Content

[0007] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a multifunctional smart speaker.

[0008] A multifunctional smart speaker includes a main control module, a power supply and control module, an audio amplifier module, and a temperature monitoring module. The main control module is connected to the power supply and control module, the audio amplifier module, and the temperature monitoring module, respectively. The power supply and control module includes a power supply circuit, a power management circuit, and a charging management circuit.

[0009] The power supply circuit includes a battery BAT, and the power management circuit includes a DC-DC converter chip U9. The VDD pin of the DC-DC converter chip U9 is connected to the battery BAT, and the OUT pin of the DC-DC converter chip U9 outputs the conversion voltage to power the main control module.

[0010] The charging management circuit includes a charging management chip U3. The BAT pin of the charging management chip U3 is connected to the battery BAT. A resistor R16 is connected to the PROG pin of the charging management chip U3. The other end of the resistor R16 is grounded. The EN pin of the charging management chip U3 is connected to the main control module through a transistor Q7 and is enabled by the drive signal of the main control module.

[0011] The audio amplifier module includes an audio power amplifier U2, the input of which is connected to the MCU chip U1, and the output of which is connected to one or more speakers.

[0012] The temperature monitoring module includes an NTC for detecting the temperature of the battery BAT, and the NTC is configured within the temperature detection area of ​​the battery BAT.

[0013] Preferably, capacitors C10 and C11 are connected in parallel to the OUT pin of the DC-DC converter chip U9, and the other ends of capacitors C10 and C11 are grounded. A diode D1, which is a Schottky diode, is also connected to the OUT pin of the DC-DC converter chip U9.

[0014] Preferably, resistors R17 and R46 are connected in parallel to the EN pin of the charging management chip U3. The other end of resistor R17 is grounded, and the other end of resistor R46 is connected to the VCC pin of the charging management chip U3. The common terminal of resistors R17 and R46 is connected to the drain of transistor Q7. The source of transistor Q7 is grounded, and the gate of transistor Q7 is connected to resistor R23. The other end of resistor R23 is connected to MCU chip U1.

[0015] Preferably, the main control module includes an MCU chip U1, model JL7016C.

[0016] Preferably, the MCU chip U1 is connected to a function indicator light and a button module. The function indicator light includes at least one LED, and the button module includes one or both of physical buttons and touch buttons.

[0017] Preferably, the MCU chip U1 is configured with a reset control port, a power-on / off detection port, and a power-on / off sustaining port. The reset control port is used to detect the user's reset button operation; the power-on / off detection port is used to detect the user's power-on / off button operation; and the power-on / off sustaining port is used to control the power supply state to achieve power-on or power-off according to the instructions of the MCU chip U1.

[0018] Preferably, the audio power amplifier U2 is model XA9815B. The INN and INP pins of the audio power amplifier U2 are connected to the MCU chip U1 as input pins to receive audio signals, and the OUTP and OUTN pins of the audio power amplifier U2 are used as output pins to output the amplified audio signal.

[0019] The beneficial effects of this utility model are: the multifunctional smart speaker converts the unstable voltage of the battery into a constant voltage through the power management circuit, avoiding problems such as abnormal operation of the main control module and instruction delay caused by voltage fluctuations, thus providing a basic guarantee for the stable operation of the entire device.

[0020] In addition, the charging management circuit manages the battery charging and configures the corresponding charging current according to the battery type to avoid overcurrent charging that could damage the battery and extend its service life. At the same time, the main control module can enable the charging management circuit to control the start and stop of charging and stop charging when it is complete, thereby improving charging efficiency and reducing power consumption, thus achieving intelligent charging.

[0021] Furthermore, the battery temperature is monitored by the NTC of the temperature monitoring module and connected to the main control module. The battery temperature data can be obtained in real time, providing a basis for judgment for the main control module. If the battery temperature is too high, charging can be stopped by controlling the EN pin of the charging management chip to achieve safety protection.

[0022] Finally, the main control module, as the core, is connected to the power supply and control module and the temperature monitoring module to form a closed-loop logic of detection-control-execution. This reduces the redundant design of distributed circuits, lowers the complexity of the circuits and the probability of failure, and enables coordination between temperature monitoring, charging control and voltage conversion, thereby improving the overall synergy and reliability of the system. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a system block diagram of this utility model;

[0025] Figure 2 This is the circuit diagram of the main control module of this utility model;

[0026] Figure 3 This is the circuit diagram of the audio power amplifier module of this utility model;

[0027] Figure 4 This is a circuit diagram of the power management circuit of this utility model;

[0028] Figure 5 This is a circuit diagram of the charging management circuit of this utility model. Detailed Implementation

[0029] Example 1

[0030] like Figure 1 As shown, a multifunctional smart speaker includes a main control module, a button module, function indicator lights, a power supply and control module, an audio amplifier module, and a temperature monitoring module.

[0031] The main control module includes an MCU or a CPU, such as Figure 2As shown, in this embodiment, the MCU chip U1 with model number JL7016C is selected, which supports LE AUDIO technology and realizes one-to-many connection.

[0032] The MCU chip U1, through the cooperation of various peripheral circuit components, realizes the reception, decoding, processing and playback of Bluetooth audio. It also has the function of communicating and interacting with other peripherals, meeting the needs of audio devices in terms of wireless audio devices, sound quality optimization and function expansion.

[0033] In addition, the MCU chip U1 is also connected to function indicator lights and a button module. The function indicator lights include at least one LED, which illuminates different LEDs to indicate different functions. The button module includes physical buttons and touch buttons, which can be selected according to product requirements.

[0034] It is important to note that the MCU chip U1 is configured with a reset control port, a power-on / off detection port, and a power-on / off sustain port. The reset control port detects user reset operations to restart or initialize the system. The power-on / off detection port detects user key presses and converts the physical power-on / off actions into electrical signals. The power-on / off sustain port controls the power supply state according to instructions from the MCU chip U1 to achieve power-on or power-off.

[0035] The audio power amplifier module includes an audio power amplifier U2 with model number XA9815B. The input terminal of the audio power amplifier U2 is connected to the MCU chip U1, and the output terminal is connected to one or more speakers to realize single-channel or multi-channel output.

[0036] The audio power amplifier U2 amplifies the input signal through internal transistors to output a higher-power audio signal. Its internal control circuit adjusts the amplification factor according to the strength of the input signal and other parameters to ensure the quality of the output signal.

[0037] Specifically, such as Figure 3 As shown, the INN and INP pins of the audio power amplifier U2 are connected to the MCU chip U1 as input pins to receive audio signals, and the OUTP and OUTN pins of the audio power amplifier U2 are used as output pins to output the amplified audio signals.

[0038] Furthermore, the peripheral circuitry of the audio power amplifier U2 includes a filter circuit, which is configured at the power input terminal, signal input terminal, and signal output terminal to filter out noise and ripple and improve signal stability.

[0039] The power supply and control module includes a power supply circuit, a power management circuit, and a charging management circuit. The power supply circuit includes the battery BAT and its peripheral circuits. The peripheral circuits of the battery BAT are used to filter and protect the voltage of the battery BAT, and will not be described in detail here.

[0040] like Figure 4 As shown, the power management circuit includes a DC-DC converter chip U9. Through the cooperation of the DC-DC converter chip U9 and external circuitry, the voltage of the battery BAT is adjusted to a stable 5V output voltage to power the MCU chip U1. Specifically, the VDD pin of the DC-DC converter chip U9 is connected to the battery BAT, and the OUT pin serves as the output terminal, providing a stable voltage.

[0041] The DC-DC converter chip U9 has two capacitors, C10 and C11, connected in parallel on its OUT pin. The other ends of capacitors C10 and C11 are grounded to remove ripple in the output voltage and ensure a smooth and stable output voltage. A diode, D1 (a Schottky diode), is also connected to the OUT pin of the DC-DC converter chip U9 to prevent reverse current and provide circuit protection.

[0042] like Figure 5 As shown, the charging management circuit includes a charging management chip U3, which includes a BAT pin, a PROG pin, an STDBY pin, an EN pin, and a TEMP pin. The BAT pin of the charging management chip U3 is connected to the battery BAT. A resistor R16 is connected to the PROG pin of the charging management chip U3, with the other end of resistor R16 grounded. The charging current of the battery BAT is adjusted by changing the resistance value of resistor R16, facilitating the charging management of the battery BAT.

[0043] The EN pin of the charging management chip U3 is connected to resistors R17 and R46 in parallel. The other end of resistor R17 is grounded, and the other end of resistor R46 is connected to the VCC pin of the charging management chip U3. The common terminal of resistors R17 and R46 is connected to the drain of transistor Q7. The source of transistor Q7 is grounded, and the gate of transistor Q7 is connected to resistor R23. The other end of resistor R23 is connected to MCU chip U1.

[0044] Among them, resistor R23 is used to limit the gate current of transistor Q7. Transistor Q7 is used to control the circuit to turn on and off according to the signal of MCU chip U1. Resistors R17 and R46 form a voltage divider circuit structure to adjust the input voltage and supply power to charging management chip U3.

[0045] The charging management chip U3 detects the voltage of the battery BAT through the BAT pin and charges the battery BAT according to the charging current set by the PROG pin. When it detects that the battery BAT does not need to be charged, it enters standby mode through the STDBY pin to reduce power consumption.

[0046] Furthermore, the power supply and control module is equipped with a temperature monitoring module, which is connected to the MCU chip U1. The temperature monitoring module includes an NTC for temperature detection. The NTC detects the temperature of the battery BAT, enabling the MCU chip U1 to sense the temperature change of the battery BAT through the temperature signal of the NTC. This facilitates issuing a safety alarm and performing high-temperature protection when the battery BAT temperature is too high.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-functional smart speaker, characterized by, It includes a main control module, a power supply and control module, an audio amplifier module, and a temperature monitoring module. The main control module is connected to the power supply and control module, the audio amplifier module, and the temperature monitoring module, respectively. The power supply and control module includes a power supply circuit, a power management circuit, and a charging management circuit. The power supply circuit includes a battery BAT, and the power management circuit includes a DC-DC converter chip U9. The VDD pin of the DC-DC converter chip U9 is connected to the battery BAT, and the OUT pin of the DC-DC converter chip U9 outputs the conversion voltage to power the main control module. The charging management circuit includes a charging management chip U3. The BAT pin of the charging management chip U3 is connected to the battery BAT. A resistor R16 is connected to the PROG pin of the charging management chip U3. The other end of the resistor R16 is grounded. The EN pin of the charging management chip U3 is connected to the main control module through a transistor Q7 and is enabled by the drive signal of the main control module. The audio amplifier module includes an audio power amplifier U2, the input of which is connected to the MCU chip U1, and the output of which is connected to one or more speakers. The temperature monitoring module includes an NTC for detecting the temperature of the battery BAT, and the NTC is configured within the temperature detection area of ​​the battery BAT.

2. The multifunctional smart speaker according to claim 1, characterized in that, The DC-DC converter chip U9 has two capacitors C10 and C11 connected in parallel on its OUT pin. The other ends of capacitors C10 and C11 are grounded. A diode D1, which is a Schottky diode, is also connected to the OUT pin of the DC-DC converter chip U9.

3. The multifunctional smart speaker according to claim 1, characterized in that, The charging management chip U3 has two resistors connected in parallel, R17 and R46, on its EN pin. The other end of resistor R17 is grounded, and the other end of resistor R46 is connected to the VCC pin of the charging management chip U3. The common terminal of resistors R17 and R46 is connected to the drain of transistor Q7, the source of transistor Q7 is grounded, the gate of transistor Q7 is connected to resistor R23, and the other end of resistor R23 is connected to MCU chip U1.

4. The multifunctional smart speaker according to claim 1, characterized in that, The main control module includes an MCU chip U1, model number JL7016C.

5. The multifunctional smart speaker according to claim 4, characterized in that, The MCU chip U1 is connected to a function indicator light and a button module. The function indicator light includes at least one LED light, and the button module includes one or both of physical buttons and touch buttons.

6. The multifunctional smart speaker according to claim 4, characterized in that, The MCU chip U1 is configured with a reset control port, a power-on / off detection port, and a power-on / off maintenance port. The reset control port is used to detect the user's reset button operation; the power-on / off detection port is used to detect the user's power-on / off button operation; and the power-on / off maintenance port is used to control the power supply state to achieve power-on or power-off according to the instructions of the MCU chip U1.

7. The multifunctional smart speaker according to claim 1, characterized in that, The audio power amplifier U2 is model XA9815B. The INN and INP pins of the audio power amplifier U2 are connected to the MCU chip U1 as input pins to receive audio signals. The OUTP and OUTN pins of the audio power amplifier U2 are used as output pins to output the amplified audio signal.

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