Vehicle-mounted player suitable for 24V storage battery and vehicle adopting 24V storage battery

Abstract

The vehicle-mounted player comprises a shell and a circuit control board arranged in the shell, and the circuit control board at least comprises a single chip microcomputer main control circuit, a first power amplifier circuit, a second power amplifier circuit and a power input management circuit matched with the 24V storage battery. The first power amplifier circuit, the second power amplifier circuit and the power supply input management circuit are all connected with the single chip microcomputer main control circuit; the power supply input management circuit comprises a first power supply voltage processing circuit, a second power supply voltage processing circuit, a TVS tube and a capacitor which are connected in parallel, and the single-chip microcomputer main control circuit comprises an ESD static tube which is connected in parallel with a data line pin. The vehicle-mounted player suitable for the 24V storage battery is suitable for a vehicle adopting the 24V storage battery, the dual-power amplifier design is adopted, the sound effect output performance is good, the power input management circuit and the ESD electrostatic tube are introduced, and the stability and safety of the vehicle-mounted player are improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle-mounted media player technology, and in particular to a vehicle-mounted media player suitable for a 24V battery and a vehicle using a 24V battery. Background Technology

[0002] With the rapid development of the automotive industry and the increasing demand from consumers for in-car entertainment, car audio players, as an important component of the vehicle's electrical system, have gradually evolved from simple radio functions into intelligent devices integrating music playback, video playback, navigation, Bluetooth connectivity, and other functions. For heavy-duty vehicles equipped with 24V batteries, such as trucks and buses, the performance requirements for car audio players are more stringent. Existing car audio player configurations cannot meet these requirements, resulting in a poor user experience. A 24V battery is typically composed of two 12V batteries connected in series to meet the high voltage requirements of the heavy-duty vehicle's electrical system. Compared to 12V batteries, 24V batteries not only have a higher voltage but also experience greater instantaneous current fluctuations during ignition, making them prone to damage. Trucks equipped with 24V batteries are generally designed for pre-installed or OEM use, requiring high levels of anti-static and EMC electromagnetic radiation protection, which existing car audio players struggle to meet.

[0003] Therefore, it is evident that how to provide a high-performance in-vehicle player suitable for 24V batteries has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This invention provides a car audio player suitable for 24V batteries, solving the technical problem of how to provide a high-performance car audio player suitable for 24V batteries, achieving the effect of being suitable for vehicles using 24V batteries, with good sound output performance, high stability and safety.

[0005] In a first aspect, this utility model provides a car audio player suitable for 24V batteries. The car audio player includes a housing and a circuit control board disposed within the housing. The circuit control board includes at least a microcontroller main control circuit, a first power amplifier circuit, a second power amplifier circuit, and a power input management circuit adapted to a 24V battery. The first power amplifier circuit, the second power amplifier circuit, and the power input management circuit are all connected to the microcontroller main control circuit.

[0006] The power input management circuit includes a first power voltage processing circuit, a second power voltage processing circuit, a TVS diode, and a capacitor connected in parallel.

[0007] The microcontroller main control circuit includes an ESD tube connected in parallel at the data line pin.

[0008] Preferably, the input voltage range of both the first power supply voltage processing circuit and the second power supply voltage processing circuit is 8V-36V, the output voltage of the first power supply voltage processing circuit is 5V, and the output voltage range of the second power supply voltage processing circuit is 9V-12V.

[0009] Preferably, the capacitor has a withstand voltage of 35V or greater.

[0010] Preferably, the capacitance value of the capacitor is in the range of 2200UF-4700UF.

[0011] Preferably, the circuit control board is a large-size circuit board.

[0012] Preferably, the circuit control board further includes a speech recognition control circuit.

[0013] Preferably, the in-vehicle player further includes a safe driving assistance module, which includes a vehicle status data acquisition circuit, a driver behavior data acquisition circuit, and an audio intelligent recommendation control circuit.

[0014] Preferably, the in-vehicle player also includes a USB interface, which supports fast charging protocols.

[0015] Preferably, the vehicle-mounted player further includes a serial WiFi module and a Bluetooth module.

[0016] Secondly, this utility model also provides a vehicle using a 24V battery, including the vehicle-mounted player for a 24V battery as described above.

[0017] This utility model provides a vehicle-mounted media player and system suitable for 24V batteries. Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0018] The vehicle player provided by this utility model is suitable for vehicles with 24V batteries. It features a dual-amplifier design for good sound output performance, and the introduction of a power input management circuit adapted to 24V batteries and an ESD tube improves the stability and safety of the vehicle player. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a car player suitable for a 24V battery, provided by a preferred embodiment of the present invention;

[0020] Figure 2 This is a structural block diagram of a car audio player suitable for a 24V battery, provided by a preferred embodiment of the present invention. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The embodiments are provided for illustrative purposes only and should not be construed as limiting the scope of this utility model. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] In the description of this utility model, it should be noted that, unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing specific embodiments only and is not intended to limit the utility model. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1In an embodiment of this utility model, a car audio player suitable for a 24V battery is provided. The car audio player includes a housing and a circuit control board disposed within the housing. The circuit control board includes at least a microcontroller main control circuit, a first power amplifier circuit, a second power amplifier circuit, and a power input management circuit adapted to a 24V battery. The first power amplifier circuit, the second power amplifier circuit, and the power input management circuit are all connected to the microcontroller main control circuit. The power input management circuit includes a power voltage processing circuit, a TVS diode, and a capacitor connected in parallel. The microcontroller main control circuit includes an ESD diode connected in parallel at the data line pin.

[0025] In a preferred embodiment of this application, two TDA7265 biamplifiers are used to output audio, achieving a power output of 4*25W. One TDA7265 biamplifier is used for the audio output to the front left and front right of the vehicle, and the other TDA7265 biamplifier is used for the audio output to the rear left and rear right of the vehicle. Figure 2 As shown, the TDA7265 bi-amplifier is connected to the 4558 preamplifier, which in turn is connected to the microcontroller's main control circuit via the PT2313 audio control circuit. Both TDA7265 bi-amplifiers are equipped with 200g ultra-thick heatsinks to meet heat dissipation requirements, thereby reducing distortion and achieving Hi-Fi level high-fidelity output.

[0026] Existing vehicle-mounted media players generally meet the requirements of 12V or a single 24V battery, but the vehicle-mounted media player of this application is applicable to the 12V-24V range and is generally installed in trucks or buses. Therefore, in the preferred embodiment of this utility model, the 24V power supply voltage is processed by a power supply voltage processing circuit adapted to the power input management circuit of a 24V battery. The power supply voltage processing circuit includes a first power supply voltage processing circuit and a second power supply voltage processing circuit.

[0027] In a preferred embodiment of this application, the first power supply voltage processing circuit uses a U11-810A model voltage power processor with an input voltage range of 8V-36V and a stable output voltage of 5V, ensuring the power supply input for a microcontroller main control circuit.

[0028] In a preferred embodiment of this application, the second power supply voltage processing circuit uses a U15-810A voltage processor with an input voltage range of 8V-36V and a stable output voltage of 9V-12V, ensuring the power supply input for circuits such as the sound effect control circuit.

[0029] The TDA7265 used in this embodiment supports 24V voltage. When the voltage is as high as 36V, the two 8810A can also output a stable voltage. When the input voltage drops to 8V, the two 8810A can also work normally, providing the lowest and highest power supply requirements, making it more compatible with a wider voltage range. Therefore, it can be used with both 12V-24V vehicle players, improving production efficiency and reducing warehouse inventory.

[0030] The current and voltage of a battery change abruptly during ignition. To stabilize these instantaneous currents and voltages, this application employs a TVS diode surge protection design, coupled with a large capacitor with a withstand voltage equal to or greater than 35V and a capacitance range of 2200uF-4700uF. The large capacitor charges during ignition, thus stabilizing the input and output voltages and preventing sudden changes. Furthermore, when the instantaneous current surge is high, a portion is conducted to ground through the TVS diode. If the current exceeds the rated current, the TVS diode will break down, short-circuiting directly to ground, thereby protecting downstream circuitry from damage.

[0031] In a preferred embodiment of this application, the circuit control board uses a large-size circuit board, which refers to an ATX motherboard or an E-ATX motherboard. In this application, an ATX motherboard is used, and its width is increased to improve the exposed ground plane of the circuit control board, quickly eliminate static electricity generated by the circuit control board, reduce damage to other components, and ensure the stability of the circuit control board's performance. The large-size circuit board also reduces interference between signal lines and power supplies, improving the signal-to-noise ratio and audio output performance.

[0032] In a preferred embodiment of this application, the microcontroller main control circuit includes an ESD transistor connected in parallel at the data line pin to reduce the electromagnetic peak wave of the microcontroller main control circuit, thereby reducing electromagnetic radiation.

[0033] In a preferred embodiment of this utility model, the circuit control board further includes a voice recognition control circuit. During driving, the driver can use the voice recognition control circuit to control the in-vehicle player by voice, eliminating the need for the driver to be distracted by switching videos and ensuring the safety of driving.

[0034] In a preferred embodiment of this invention, the in-vehicle player further includes a safe driving assistance module, which comprises a vehicle status data acquisition circuit, a driver behavior data acquisition circuit, and an audio intelligent recommendation control circuit. The vehicle status data acquisition circuit collects status data during vehicle movement, such as vehicle speed. Vehicle speed reflects the surrounding environment, driver status, and vehicle status. Combined with driver behavior data collected by the driver behavior data acquisition circuit, a comprehensive judgment can be made regarding the vehicle, environment, and driver. The audio intelligent recommendation control circuit generates an audio-visual recommendation list based on the judgment result, improving the intelligent control level of the in-vehicle player. For example, if the judgment result indicates that the driver is in a state of fatigue, the generated audio-visual recommendation list will be more exciting and engaging, aiming to put the driver in an emotionally energized state.

[0035] In a preferred embodiment of this application, the in-vehicle player also includes a fast-charging USB interface, which supports fast charging protocols such as the PL1583+FP6601Q fast charging protocol and the QC3.0 fast charging protocol to enable fast charging of mobile terminals.

[0036] In a preferred embodiment of this utility model, the vehicle-mounted player further includes a serial WiFi module and a Bluetooth module, which connect to the mobile terminal via the serial WiFi module and / or Bluetooth module to provide network connectivity support.

[0037] With the support of a serial WiFi module, the in-vehicle media player can achieve more intelligent expansion, such as screen mirroring.

[0038] In a preferred embodiment of this utility model, the display screen of the vehicle player adopts a 56P ultra-large LCD display screen, which makes the display picture clearer and the colors softer.

[0039] In a preferred embodiment of this utility model, the panel display uses an HT1623 driver to drive a 56P ultra-large LCD display screen.

[0040] In a preferred embodiment of this utility model, the decryption module of the microcontroller main control circuit adopts model A4900B, which supports playback of various lossless audio and video formats to improve the playback performance of the in-vehicle player.

[0041] This application provides a car audio player suitable for 24V batteries, comprising a housing and a circuit control board disposed within the housing. The circuit control board includes at least a microcontroller main control circuit, a first power amplifier circuit, a second power amplifier circuit, and a power input management circuit adapted to 24V batteries. The first power amplifier circuit, the second power amplifier circuit, and the power input management circuit are all connected to the microcontroller main control circuit. The power input management circuit includes a first power supply voltage processing circuit, a second power supply voltage processing circuit, a TVS diode, and a capacitor connected in parallel. The microcontroller main control circuit includes an ESD electrostatic discharge tube connected in parallel at the data line pins. This car audio player suitable for 24V batteries is adapted to 24V batteries, features a dual-amplifier design for good sound output performance, and the introduction of the power input management circuit and the ESD electrostatic discharge tube improves the stability and safety of the car audio player.

[0042] Based on the vehicle-mounted media player suitable for 24V batteries disclosed in the embodiments of this utility model, this utility model also provides a vehicle using a 24V battery, which is equipped with the vehicle-mounted media player suitable for 24V batteries disclosed in this utility model.

[0043] The embodiments described above are merely preferred embodiments of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various improvements and substitutions without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the scope of the claims.

Claims

1. A car player suitable for 24V battery ， characterized in that The vehicle-mounted player comprises a shell and a circuit control board arranged in the shell, the circuit control board at least comprising a single-chip microcomputer master control circuit, a first power amplifier circuit, a second power amplifier circuit and a power input management circuit adapted to a 24V battery, the first power amplifier circuit, the second power amplifier circuit and the power input management circuit being connected with the single-chip microcomputer master control circuit; The power input management circuit comprises a first power voltage processing circuit, a second power voltage processing circuit, a TVS tube and a capacitor which are connected in parallel with each other. The single-chip microcomputer master control circuit comprises an ESD static tube connected in parallel at a data line pin.

2. The car audio player for 24V battery as claimed in claim 1, wherein The input voltage range of the first power voltage processing circuit and the second power voltage processing circuit is 8V-36V, the output voltage of the first power voltage processing circuit is 5V, and the output voltage range of the second power voltage processing circuit is 9V-12V.

3. The car audio player for 24V battery as claimed in claim 1, wherein The withstand voltage of the capacitor is equal to or greater than 35V.

4. The car audio player for 24V battery of claim 1, wherein The capacitance range of the capacitor is 2200UF-4700UF.

5. The car audio player for 24V battery of claim 1, wherein, The circuit control board adopts a large-size circuit board.

6. The car audio player adapted for 24V battery of claim 1, wherein, The circuit control board further comprises a language recognition control circuit.

7. The car kit for 24V battery of claim 1, wherein, The vehicle-mounted player further comprises a safe driving assistance module, the safe driving assistance module comprising a vehicle state data acquisition circuit, a driver behavior data acquisition circuit and an audio intelligent recommendation control circuit.

8. The car kit of claim 1, wherein the car kit is adapted for use with a 24V battery. The vehicle-mounted player further comprises a fast charging USB interface, the fast charging USB interface supporting a fast charging protocol.

9. The car kit for 24V battery of claim 1, wherein, The vehicle-mounted player further comprises a serial WiFi module and a Bluetooth module.

10. A vehicle employing a 24 volt battery, characterised in that, The vehicle comprises the vehicle-mounted player adapted to a 24V battery as claimed in any one of claims 1-9.

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