Audio signal processing circuit and mobile energy storage power supply

Abstract

The utility model discloses an audio signal processing circuit and a mobile energy storage power supply, the mobile energy storage power supply comprises a processing chip, a housing and a loudspeaker, the loudspeaker is arranged in the housing, and the housing is provided with a plurality of loudspeaker holes at the position of the loudspeaker. The audio signal processing circuit comprises a conversion circuit, a power amplification circuit and a loudspeaker pin, and the processing chip transmits a digital signal to the conversion circuit; the conversion circuit transmits the analog signal to the power amplification circuit; the power amplification circuit transmits the analog signal to a loudspeaker pin; and the loudspeaker pin is connected with the loudspeaker. The mobile energy storage power supply can provide a voice broadcast function, convenience is brought to use of a user, the audio signal processing circuit is high in anti-interference capacity, and the mobile energy storage power supply is suitable for a high-power mobile energy storage power supply.

Description

TECHNICAL FIELD

[0001] The utility model relates to an audio signal processing circuit and mobile energy storage power supply. BACKGROUND

[0002] The mobile energy storage power supply is a portable power equipment integrating battery energy storage, electric energy conversion and intelligent management, aiming to provide clean, flexible and safe off-grid or emergency power solutions for users.

[0003] Its technical development relies on the progress of battery technology, the high efficiency of power electronic devices and the maturity of intelligent management system, gradually replacing traditional fuel generators, becoming the core power equipment in outdoor activities, emergency rescue, home backup and other scenes. With the global energy transformation and the increasing demand for green energy from consumers, the mobile energy storage power supply market is growing rapidly, and the technology iteration is accelerating significantly.

[0004] The existing mobile power supply usually only provides basic charging function, and users cannot understand the state and operation of the equipment in many aspects, such as power remaining amount, charging completion prompt, etc., which affects the convenience of user use. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem that the mobile energy storage power supply in the prior art cannot conveniently obtain information, provides an audio signal processing circuit and mobile energy storage power supply capable of providing voice broadcast function, bringing convenience to users, and the audio signal processing circuit has strong anti-interference ability and is suitable for high-power mobile energy storage power supply.

[0006] The utility model solves the above technical problems through the following technical scheme:

[0007] An audio signal processing circuit for a mobile energy storage power supply, the mobile energy storage power supply comprising a processing chip, a shell and a loudspeaker, the loudspeaker being arranged in the shell, the shell being provided with a plurality of loudspeaker holes at the position of the loudspeaker, characterized in that the audio signal processing circuit comprises a conversion circuit, a power amplifier circuit and a loudspeaker pin,

[0008] The processing chip transmits digital signals to the conversion circuit;

[0009] The conversion circuit transmits analog signals to the power amplifier circuit;

[0010] The power amplifier circuit transmits analog signals to the loudspeaker pin;

[0011] The loudspeaker pin is connected with the loudspeaker.

[0012] Preferably, the conversion circuit comprises a digital signal pin, a converter chip, an analog signal pin and a power supply pin,

[0013] The converter chip is connected with a processing chip through the digital signal pin;

[0014] The analog signal pin and the power supply pin are both connected with the converter chip;

[0015] The analog signal pin is connected with the power amplification circuit.

[0016] Preferably, the model of the converter chip is CJC4344, the analog signal pin is AOUTRN output end and AOUTLN output end, a capacitor and a grounding resistor are arranged between the AOUTRN output end and the AOUTRN pin of the converter chip, a capacitor and a grounding resistor are arranged between the AOUTLN output end and the AOUTLN pin of the converter chip, and two parallel grounding capacitors are arranged between the power supply pin and the VA pin of the converter chip.

[0017] Preferably, the power amplification circuit comprises an audio amplifier, an analog signal output end and a power supply pin,

[0018] The audio amplifier is connected with the analog signal pin and the power supply pin;

[0019] The analog signal output end is connected with the speaker pin.

[0020] Preferably, the model of the audio amplifier is EG8305, a first resistor and a first capacitor are arranged in series between the AOUTRN output end and the INP pin of the audio amplifier, a second resistor and a second capacitor are arranged in series between the AOUTLN output end and the INN pin of the audio amplifier, the first capacitor is grounded through a capacitor between the AOUTRN output end, the second capacitor is grounded through a capacitor between the AOUTLN output end, the first resistor is grounded through a resistor between the INP pin, and the second resistor is grounded through a resistor between the INN pin.

[0021] Preferably, the power supply pin is connected with the VDD pin of the audio amplifier, and the VDD pin is grounded through a parallel capacitor and electrolytic capacitor between the power supply pin.

[0022] Preferably, the analog signal output end is connected with the speaker pin, and the speaker pin is connected with the speaker through a magnetic bead and a grounding capacitor.

[0023] Preferably, the mobile energy storage power supply comprises an LCD screen arranged on the shell.

[0024] Preferably, the mobile energy storage power supply comprises an inverter and a battery management system, and signal pins of the inverter and the battery management system are connected with the processing chip.

[0025] The mobile energy storage power supply comprises the audio signal processing circuit.

[0026] On the basis of common knowledge in the art, the above-mentioned preferred conditions can be combined arbitrarily, thereby obtaining each preferred example of the present application.

[0027] The positive progress effect of the present application is that:

[0028] The audio signal processing circuit has strong anti-interference ability and is suitable for high-power mobile energy storage power supply. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 FIG. 1 is a structural schematic diagram of a mobile energy storage power supply according to an embodiment of the present application.

[0030] Fig. 2 FIG. 2 is a structural schematic diagram of an audio signal processing circuit according to an embodiment of the present application.

[0031] Fig. 3 FIG. 3 is another structural schematic diagram of the audio signal processing circuit according to the embodiment of the present application.

[0032] Fig. 4 FIG. 4 is another structural schematic diagram of the audio signal processing circuit according to the embodiment of the present application. DETAILED DESCRIPTION

[0033] The present application will be further described below by way of examples, but the present application is not limited in the scope of the examples.

[0034] Example 1

[0035] In this embodiment, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] Referring to Figs. 1 to 4The embodiment provides a mobile energy storage power supply which comprises an audio signal processing circuit, a processing chip, a shell and a loudspeaker.

[0037] The loudspeaker is arranged in the shell, and the shell is provided with a plurality of loudspeaker holes at the position of the loudspeaker.

[0038] The audio signal processing circuit comprises a conversion circuit 11, a power amplification circuit 21 and a loudspeaker pin 31.

[0039] The processing chip transmits a digital signal to the conversion circuit 11.

[0040] The conversion circuit 11 transmits an analog signal to the power amplification circuit 21.

[0041] The power amplification circuit transmits an analog signal to the loudspeaker pin 31.

[0042] The loudspeaker pin is connected with the loudspeaker 41.

[0043] The conversion circuit 11 comprises a digital signal pin 111, a converter chip 112, an analog signal pin 113 and a power supply pin 114.

[0044] The converter chip is connected with the processing chip through the digital signal pin.

[0045] The analog signal pin and the power supply pin are both connected with the converter chip.

[0046] The analog signal pin is connected with the power amplification circuit.

[0047] The model of the converter chip is CJC4344, and specifically can be an audio digital-to-analog converter CJC4344 of Wuhan Guanghua Chip Technology Co., Ltd.

[0048] The analog signal pin 113 is an AOUTRN output end and an AOUTLN output end.

[0049] A capacitor and a grounding resistor are arranged between the AOUTRN output end and an AOUTRN pin of the converter chip.

[0050] A capacitor and a grounding resistor are arranged between the AOUTLN output end and an AOUTLN pin of the converter chip.

[0051] Two parallel grounding capacitors are arranged between the power supply pin and a VA pin of the converter chip.

[0052] The power amplification circuit 21 comprises an audio amplifier 211, an analog signal output end 212 and a power supply pin 213.

[0053] The audio amplifier is connected with an analog signal pin and a power supply pin.

[0054] The analog signal output end is connected with the speaker pin 311.

[0055] The audio amplifier is EG8305, specifically, EG8305 of Yijinqi Microelectronics Co., Ltd., a 3W single-channel filterless class D audio amplifier.

[0056] A first resistor and a first capacitor are connected in series between the AOUTRN output end and the INP pin of the audio amplifier.

[0057] A second resistor and a second capacitor are connected in series between the AOUTLN output end and the INN pin of the audio amplifier.

[0058] The first capacitor is grounded through a capacitor between the AOUTRN output end, and the second capacitor is grounded through a capacitor between the AOUTLN output end.

[0059] The first resistor is grounded through a resistor between the INP pin, and the second resistor is grounded through a resistor between the INN pin.

[0060] The power supply pin is connected with the VDD pin of the audio amplifier, and the VDD pin is grounded through a capacitor and an electrolytic capacitor in parallel between the power supply pin.

[0061] The analog signal output end is connected with the speaker pin, and the speaker pin is connected with the speaker through a magnetic bead and a grounding capacitor.

[0062] The mobile energy storage power supply comprises an LCD screen arranged on the shell.

[0063] The mobile energy storage power supply comprises an inverter and a battery management system, and the signal pins of the inverter and the battery management system are connected with the processing chip.

[0064] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. An audio signal processing circuit for a mobile energy storage power supply, said mobile energy storage power supply comprising a processing chip, a housing and a loudspeaker, said loudspeaker being arranged in said housing, said housing being provided with a number of loudspeaker holes at the position of the loudspeaker, characterized in that, The audio signal processing circuit comprises a conversion circuit, a power amplification circuit and a speaker pin, The processing chip transmits a digital signal to the conversion circuit; The conversion circuit transmits an analog signal to the power amplification circuit; The power amplification circuit transmits an analog signal to the speaker pin; The speaker pin is connected with the speaker.

2. The audio signal processing circuit of claim 1, wherein, The conversion circuit comprises a digital signal pin, a converter chip, an analog signal pin and a power supply pin, The converter chip is connected with the processing chip through the digital signal pin; The analog signal pin and the power supply pin are both connected with the converter chip; The analog signal pin is connected with the power amplification circuit.

3. The audio signal processing circuit of claim 2, wherein, The model of the converter chip is CJC4344, the analog signal pin is AOUTRN output end and AOUTLN output end, a capacitor and a grounding resistor are arranged between the AOUTRN output end and the AOUTRN pin of the converter chip, a capacitor and a grounding resistor are arranged between the AOUTLN output end and the AOUTLN pin of the converter chip, and two parallel grounding capacitors are arranged between the power supply pin and the VA pin of the converter chip.

4. The audio signal processing circuit of claim 3, wherein, The power amplification circuit comprises an audio amplifier, an analog signal output end and a power supply pin, The audio amplifier is connected with the analog signal pin and the power supply pin; The analog signal output end is connected with the speaker pin.

5. The audio signal processing circuit of claim 4, wherein, The model of the audio amplifier is EG8305, a first resistor and a first capacitor are arranged in series between the AOUTRN output end and the INP pin of the audio amplifier, a second resistor and a second capacitor are arranged in series between the AOUTLN output end and the INN pin of the audio amplifier, the first capacitor is grounded through a capacitor between the AOUTRN output end, the second capacitor is grounded through a capacitor between the AOUTLN output end, the first resistor is grounded through a resistor between the INP pin, and the second resistor is grounded through a resistor between the INN pin.

6. The audio signal processing circuit of claim 5, wherein, The power supply pin is connected with the VDD pin of the audio amplifier, and the VDD pin is grounded through a parallel capacitor and an electrolytic capacitor between the power supply pin.

7. The audio signal processing circuit of claim 5, wherein, The analog signal output end is connected with the speaker pin, the speaker pin is connected with the speaker through a magnetic bead and a grounding capacitor.

8. The audio signal processing circuit of claim 1, wherein, The mobile energy storage power supply comprises an LCD screen arranged on the shell.

9. The audio signal processing circuit of claim 1, wherein, The mobile energy storage power supply comprises an inverter and a battery management system, and the signal pins of the inverter and the battery management system are connected with the processing chip.

10. A mobile energy storage power source, characterized by, The mobile energy storage power supply comprises the audio signal processing circuit according to any one of claims 1 to 9.

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