CD player, player system and control method for new energy vehicles

Abstract

The present invention discloses a CD player, a player system and a control method for a new energy vehicle, wherein the device comprises a main control module, a core module and a wireless communication module; the core module and the wireless communication module are connected to the main control module; the main control module is connected to a charging seat in a new energy vehicle; the main control module comprises a main control chip and a vehicle-mounted connection circuit, the vehicle-mounted connection circuit is connected to the charging seat, and the vehicle-mounted connection circuit is also connected to the main control chip. By implementing this embodiment, the vehicle-mounted connection circuit uses an electrical signal transmitted from the charging seat to realize the automatic process of starting up the CD player, switching to a CD playback vehicle mode, establishing a wireless communication connection with an audio device of a new energy vehicle, and the core module obtaining and sending audio data to the audio device for audio playback. Therefore, when driving a car, the possibility of accidents is reduced, thereby improving driving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of audio playback for new energy vehicles, and in particular to a CD playback device, a playback system and a control method for new energy vehicles. Background Art

[0002] The existing new energy vehicles are not equipped with on-board CD (Compact Disc, optical disc, laser disc) playback devices, resulting in the discs purchased previously being unable to continue to be used. In view of this situation, many CD playback devices have appeared on the market to supplement the new energy vehicle market. However, when this type of CD playback device is not originally configured on the vehicle, that is, an external CD playback device is used on a new energy vehicle, it will require manual power on and off, and cannot be connected to the audio equipment of the new energy vehicle, which will affect safe driving and easily cause accidents. Summary of the invention

[0003] The embodiments of the present invention provide a CD player, a player system and a control method for a new energy vehicle, aiming to solve the problem in the prior art that when an external CD player is used on a new energy vehicle, manual power on and off is required and the player cannot be connected to the audio equipment of the new energy vehicle, thereby affecting safe driving and posing a safety hazard.

[0004] In order to solve the above problems, in the first aspect, an embodiment of the present invention provides a CD playback device for a new energy vehicle, comprising a main control module, a movement module and a wireless communication module; the movement module and the wireless communication module are connected to the main control module; the main control module is connected to a charging seat in the new energy vehicle; the main control module comprises a main control chip and a vehicle-mounted connection circuit, the vehicle-mounted connection circuit is connected to the charging seat, and the vehicle-mounted connection circuit is also connected to the main control chip; wherein the vehicle-mounted connection circuit is used to control the CD playback device for the new energy vehicle to start up and automatically switch to the CD playback vehicle mode through the electrical signal obtained from the charging seat after the new energy vehicle is started; the wireless communication module is used to establish a wireless communication connection with the audio equipment of the new energy vehicle in the CD playback vehicle mode; the movement module is used to send the audio data to the audio equipment through the wireless communication module for audio playback when the audio data is read in the CD playback vehicle mode.

[0005] In a second aspect, an embodiment of the present invention further provides a CD playback system for a new energy vehicle, comprising a charging base for a new energy vehicle and a CD playback device for a new energy vehicle as described in the first aspect, wherein the CD playback device comprises a main control module, a movement module and a wireless communication module; the movement module and the wireless communication module are connected to the main control module; the main control module is connected to the charging base; the main control module comprises a main control chip and a vehicle-mounted connection circuit, the vehicle-mounted connection circuit is connected to the charging base, and the vehicle-mounted connection circuit is also connected to the main control chip; wherein the vehicle-mounted connection circuit is used to control the CD playback device to start up and automatically switch to the CD playback vehicle-mounted mode through the electrical signal obtained from the charging base after the new energy vehicle is started; the wireless communication module is used to establish a wireless communication connection with the audio equipment of the new energy vehicle in the CD playback vehicle-mounted mode; the movement module is used to send the audio data to the audio equipment through the wireless communication module for audio playback when the audio data is read in the CD playback vehicle-mounted mode.

[0006] In the third aspect, an embodiment of the present invention further provides a control method for a CD playback system for a new energy vehicle, which is applied to the CD playback system for a new energy vehicle as described in the second aspect, wherein the method includes the charging stand transmitting the electrical signal to the vehicle-mounted connection circuit when the new energy vehicle is started and generates an electrical signal; the vehicle-mounted connection circuit generates a power-on signal for controlling the CD playback device to start up according to the electrical signal, and transmits it to the main control chip; the main control chip controls the CD playback device in the CD playback system of the new energy vehicle to start up and automatically switch to the CD playback vehicle-mounted mode according to the power-on signal; the wireless communication module establishes a wireless communication connection with the audio equipment of the new energy vehicle in the CD playback vehicle-mounted mode; when the movement module reads audio data in the CD playback vehicle-mounted mode, the audio data is sent to the audio equipment of the new energy vehicle through the wireless communication module for audio playback.

[0007] The embodiment of the present invention provides a CD playback device, playback system and control method for a new energy vehicle, wherein the device comprises a main control module, a movement module and a wireless communication module; the movement module and the wireless communication module are connected to the main control module; the main control module is connected to a charging seat in the new energy vehicle; the main control module comprises a main control chip and an on-board connection circuit, the on-board connection circuit is connected to the charging seat, and the on-board connection circuit is also connected to the main control chip; wherein the on-board connection circuit is used to control the CD playback device for the new energy vehicle to start up and automatically switch to a CD playback on-board mode through an electrical signal obtained from the charging seat after the new energy vehicle is started; The wireless communication module is used to establish a wireless communication connection with the audio device of the new energy vehicle when the CD is played in the vehicle-mounted mode; the movement module is used to send the audio data to the audio device through the wireless communication module for audio playback when the audio data is read in the vehicle-mounted mode of CD playback; the vehicle-mounted connection circuit obtains an electrical signal from the charging seat to realize the automated process of starting up the CD playback device, switching the CD playback vehicle-mounted mode, establishing a wireless communication connection with the audio device of the new energy vehicle, and sending the audio data to the audio device for audio playback. Therefore, the car can be driven safely, the possibility of accidents is reduced, and driving safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0009] Figure 1 A schematic structural diagram of a vehicle-mounted connection circuit in a CD player for a new energy vehicle provided by an embodiment of the present invention;

[0010] Figure 2 A schematic structural diagram of a CD player for a new energy vehicle provided by an embodiment of the present invention;

[0011] Figure 3 A schematic structural diagram of a CD playing system for a new energy vehicle provided by an embodiment of the present invention;

[0012] Figure 4 A schematic flow chart of a control method for a CD playing system of a new energy vehicle provided by an embodiment of the present invention.

[0013] Among them, the reference numerals in the figure are:

[0014] 1. CD player system for new energy vehicles; 10. Charging stand; 20. Audio equipment; 30. CD player for new energy vehicles; 40. Main control module; 41. Main control chip; 42. On-board connection circuit; 50. Movement module; 60. Wireless communication module. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but are not used to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0017] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0018] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0019] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0020] See also Figure 1-2 , Figure 1 A schematic structural diagram of a vehicle-mounted connection circuit in a CD player for a new energy vehicle provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a CD player for a new energy vehicle provided in an embodiment of the present invention.

[0021] like Figure 1-2As shown, an embodiment of the present invention provides a CD player 30 for a new energy vehicle, comprising a main control module 40, a core module 50 and a wireless communication module 60; the core module 50 and the wireless communication module 60 are connected to the main control module 40; the main control module 40 is connected to a charging seat in a new energy vehicle; the main control module 40 comprises a main control chip 41 and a vehicle-mounted connection circuit 42, the vehicle-mounted connection circuit 42 is connected to the charging seat, and the vehicle-mounted connection circuit 42 is also connected to the main control chip 41;

[0022] The vehicle-mounted connection circuit 42 is used to control the CD player 30 for the new energy vehicle to start up and automatically switch to the CD player vehicle-mounted mode through the electrical signal obtained from the charging seat after the new energy vehicle is started;

[0023] The wireless communication module 60 is used to establish a wireless communication connection with the audio equipment of the new energy vehicle when the CD is played in the vehicle mode;

[0024] The core module 50 is used to send the audio data to the audio device through the wireless communication module 60 for audio playback when the audio data is read in the CD playback vehicle mode.

[0025] In this embodiment, the charging seat is a USB (Universal Serial Bus) socket interface set inside the new energy vehicle, which can be connected to the CD player 30 for the new energy vehicle through a TYPE-C USB data cable; one end of the TYPE-C USB data cable is connected to the charging seat, and the other end is connected to the vehicle-mounted connection circuit 42 of the CD player 30 for the new energy vehicle.

[0026] After the new energy vehicle is started, the charging seat obtains the electrical signal transmitted by the new energy vehicle, and transmits the electrical signal to the vehicle-mounted connection circuit 42 through the TYPE-C USB data cable; the vehicle-mounted connection circuit 42 can control the CD player 30 for the new energy vehicle to start up and automatically switch to the CD playback vehicle-mounted mode based on the electrical signal; the wireless communication module 60 establishes a wireless communication connection with the audio device of the new energy vehicle in the CD playback vehicle-mounted mode; when the movement module 50 reads audio data in the CD playback vehicle-mounted mode, the audio data is sent to the main control chip, and the main control chip sends the audio data to the audio device through the wireless communication module 60 for audio playback.

[0027] Among them, the CD playback in-vehicle mode refers to the state in which the CD playback device 30 for the new energy vehicle can automatically use the wireless communication module 60 to automatically establish a wireless communication connection with the audio equipment of the new energy vehicle; the wireless communication connection module can use Bluetooth signals to establish a wireless communication connection between the CD playback device 30 for the new energy vehicle and the audio equipment of the new energy vehicle.

[0028] Through the above embodiments, it can be known that after the new energy vehicle is started, the vehicle-mounted connection circuit 42 can control the power-on of the CD player 30 for the new energy vehicle and automatically switch to the CD playback vehicle-mounted mode, and the wireless communication module 60 establishes a wireless communication connection with the audio device of the new energy vehicle in the CD playback vehicle-mounted mode; when the core module 50 reads the audio data in the CD playback vehicle-mounted mode, the audio data is sent to the main control chip, and the main control chip sends the audio data to the audio device through the wireless communication module 60 for audio playback. In this way, the automatic process of starting the CD player 30 for the new energy vehicle, switching the CD playback vehicle-mounted mode, establishing a wireless communication connection with the audio device of the new energy vehicle, and sending the audio data to the audio device for audio playback is realized, so that the car can be driven safely, the possibility of accidents is reduced, and driving safety is improved.

[0029] In one embodiment, if Figure 1 As shown, the vehicle-mounted connection circuit 42 includes an interface chip U1, a first resistor R1, a first diode D1, a first switch S1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first transistor Q1;

[0030] The interface chip U1 is connected to the VBUS2 pin of the charging base and the first end of the first resistor R1; the normally-open end of the first switch S1 is connected to the second end of the first resistor R1 and the positive electrode of the first diode D1; the common end of the first switch S1 is connected to the first end of the second resistor R2; the second end of the second resistor R2 is connected to the first end of the third resistor R3; the second end of the third resistor R3 is connected to the base of the first transistor Q1; the collector of the first transistor Q1 is connected to the second end of the fourth resistor R4 and the PRST_N pin of the main control chip 41; the first end of the fourth resistor R4 is connected to the charging base.

[0031] In this embodiment, if Figure 1As shown, the second end of the second resistor R2 is also connected to the collector of the first transistor Q1; the base of the first transistor Q1 is connected to the DPWR_EN pin of the main control chip 41, and the cathode of the first diode D1, the emitter of the first transistor Q1, the emitter of the second transistor, and the normally closed end of the first switch S1 are all grounded. The first end of the first resistor R1 is connected to the VBUS2 pin of the charging stand through the interface chip U1; the first end of the fourth resistor R4 can be connected to the VDDRTC power supply provided by the charging stand, and the VDDRTC power supply is always maintained at +1.8V.

[0032] Among them, the interface chip U1 is a TYPE-C USB chip; the first switch S1 is one of a group of single-pole double-throw switches in a double-pole double-throw switch (DPDT), and the opening of the first switch S1 can be controlled by a DC voltage, that is, the first switch S1 can be controlled to switch to the normally open end ON pin; the first diode D1 can be a voltage-stabilizing diode; the specification of the first resistor R1 can be 1K; the specification of the first diode D1 can be 3V3; the specification of the second resistor R2 can be 10K; the specification of the third resistor R3 can be 2K2; the specification of the fourth resistor R4 can be 100K; the first transistor Q1 can be an NPN transistor, and its specification can be S8050; the second transistor can be an NPN transistor with a damping resistor, and its specification can be DTC124EKA.

[0033] In this embodiment, if Figure 1As shown, the CD player 30 for the new energy vehicle can be controlled to be turned on by the first resistor R1, the first diode D1, the first switch S1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first transistor Q1. Specifically, after the new energy vehicle is started, the electrical signal acquired by the charging seat is transmitted to the interface chip U1 through the VBUS2 pin, and the interface chip U1 transmits the electrical signal to the first resistor R1 and the first diode D1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally open pin ON of the first switch S1 to turn on the first switch S1. The stepped-down electrical signal +3.3V is transmitted to the second resistor R2, the third resistor R3, and the base of the first transistor Q1 to make the first transistor Q1 in the on state, and the P At this time, the RST_N signal will change from the original high potential to 0 potential, and the main control chip 41 obtains the PRST_N signal of 0 potential through the PRST_N pin to achieve reset, thereby turning on the CD player 30 for new energy vehicles; the CD player 30 for new energy vehicles is turned on under the control of the main control chip 41, and the operation of other modules is controlled by the main control chip 41; wherein, the DPWR_EN pin is connected to the base of the second transistor, because the DPWR_EN pin is 0 potential when the CD player 30 for new energy vehicles is turned off, so the second transistor is in the cut-off state.

[0034] Through the above embodiments, it can be known that when the vehicle-mounted connection circuit 42 receives the electrical signal transmitted by the charging seat, it can control the automatic start of the CD player 30 for the new energy vehicle through the interface chip U1, the first resistor R1, the first diode D1, the first switch S1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first transistor Q1. Therefore, after the new energy vehicle is started, the CD player 30 for the new energy vehicle is automatically started through the vehicle-mounted connection circuit 42, so that safe driving can be achieved, the possibility of accidents is reduced, and driving safety is improved.

[0035] In one embodiment, if Figure 1 As shown, the vehicle-mounted connection circuit 42 further includes a fifth resistor R5, a second diode D2, a second switch S2, a sixth resistor R6 and a third transistor Q3;

[0036] The first end of the fifth resistor R5 is connected to the charging base, and the second end of the fifth resistor R5 is connected to the PC08 pin of the main control chip 41 and the collector of the third transistor Q3; the base of the third transistor Q3 is connected to the cathode of the second diode D2 and the first end of the sixth resistor R6; the anode of the second diode D2 is connected to the common end of the second switch S2; the normally open end of the second switch S2 is connected to the second end of the first resistor R1 and the anode of the first diode D1.

[0037] In this embodiment, if Figure 1 As shown, the emitter of the third transistor Q3, the second end of the sixth resistor R6, and the normally closed end of the second switch S2 are all grounded. The first end of the fifth resistor R5 can be connected to the +3.3VD power supply provided by the charging station.

[0038] Among them, the second switch S2 is one of a group of single-pole double-throw switches in a double-pole double-throw switch (DPDT), and the opening of the second switch S2 can be controlled by a DC voltage, that is, the second switch S2 can be controlled to switch to the normally open end ON pin; the specification of the second diode D2 can be 1N4148; the specification of the sixth resistor R6 can be NM; the third transistor Q3 can be an NPN transistor with a damping resistor, and its specification can be DTC124EKA; the specification of the fifth resistor R5 can be 10K.

[0039] In this embodiment, if Figure 1As shown, the CD player 30 for new energy vehicles can be controlled to automatically switch to the CD player vehicle mode through the fifth resistor R5, the second diode D2, the second switch S2, the sixth resistor R6 and the third transistor Q3. Specifically, after the new energy vehicle is started, the electrical signal acquired by the charging seat is transmitted to the interface chip U1 through the VBUS2 pin, and the interface chip U1 transmits the electrical signal to the first resistor R1 and the first diode D1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally open pin ON of the second switch S2 to turn on the second switch S2. The stepped-down electrical signal +3.3V is transmitted to the base of the third transistor Q3 through the second diode D2 to make the third transistor Q3 in a conducting state, and the PC_08 signal of the PC_08 pin becomes a low potential. At this time, the main control chip 41 determines that the CD player 30 for the new energy vehicle is in the CD playback vehicle mode, and automatically switches the CD player 30 for the new energy vehicle to the Bluetooth input mode through the wireless communication connection module in the CD playback vehicle mode to achieve a wireless communication connection between the CD player 30 for the new energy vehicle and the audio equipment of the new energy vehicle. The Bluetooth input mode is a state in which a car Bluetooth signal can be received.

[0040] After the new energy vehicle is turned off, the charging seat VBUS2 is turned off, and the normally open end of the second switch S2 is switched to the normally closed end, which makes the third transistor Q3 in the cut-off state, and the PC_08 signal of the PC_08 pin becomes a high potential. After the main control chip reads the change of the PC_08 pin, a shutdown prompt window will pop up on the screen module of the CD player 30 for the new energy vehicle, and then the device will automatically shut down after 10 seconds.

[0041] Through the above embodiments, it can be known that when the vehicle-mounted connection circuit 42 receives the electrical signal transmitted by the charging seat, it can control the CD player 30 for the new energy vehicle to automatically switch to the CD playback vehicle-mounted mode through the fifth resistor R5, the second diode D2, the second switch S2, the sixth resistor R6 and the third transistor Q3. Therefore, after the new energy vehicle is started, the CD playback vehicle-mounted mode of the CD player 30 for the new energy vehicle is automatically switched through the vehicle-mounted connection circuit 42 to achieve the wireless communication connection between the CD player 30 for the new energy vehicle and the audio equipment of the new energy vehicle in the CD playback vehicle-mounted mode, so that safe driving can be achieved, the possibility of accidents is reduced, and driving safety is improved.

[0042] In one embodiment, if Figure 1 As shown, the interface chip U1 includes an A4 pin, an A5 pin, a B4 pin and a B9 pin, and the A4 pin, the A9 pin, the B4 pin and the B9 pin are all connected to the VBUS2 pin of the charging base.

[0043] In this embodiment, the interface chip U1 includes part A, part B, pin 1, pin 2, pin 3 and pin 4, the part A includes pin A1, pin A2, pin A3, pin A4, pin A5, pin A6, pin A7, pin A8, pin A9, pin A10, pin A11 and pin A12, the part B includes pin B1, pin B2, pin B3, pin B4, pin B5, pin B6, pin B7, pin B8, pin B9, pin B10, pin B11 and pin B12; wherein the pin A4, pin A9, pin B4 and pin B9 are all connected to the VBUS2 pin of the charging base; the pin A1, pin A12, pin B1, pin B12, pin 1, pin 2, pin 3 and pin 4 are all grounded.

[0044] In this embodiment, the VBUS2 pin is connected to the interface chip U1 , and the VBUS2 pin transmits the electrical signal to the first resistor R1 through the A4 pin, the A9 pin, the B4 pin, and the B9 pin of the interface chip U1 .

[0045] From the above embodiments, it can be known that the interface chip U1 realizes the transmission of the electrical signal, and then performs subsequent targeted processing according to the electrical signal.

[0046] like Figure 1-3As shown, the embodiment of the present invention also provides a CD playing system 1 for a new energy vehicle, comprising: a charging seat 10 for a new energy vehicle and a CD playing device 30 for a new energy vehicle; the CD playing device 30 for a new energy vehicle comprises a main control module 40, a movement module 50 and a wireless communication module 60; the movement module 50 and the wireless communication module 60 are connected to the main control module 40; the main control module 40 is connected to the charging seat; the main control module 40 comprises a main control chip 41 and a vehicle-mounted connection circuit 42, the vehicle-mounted connection circuit 42 is connected to the charging seat, and the vehicle-mounted connection circuit 42 is also connected to the main control chip 41; In the embodiment, the vehicle-mounted connection circuit 42 is used to control the CD player 30 for the new energy vehicle to start up and automatically switch to the CD playback vehicle-mounted mode through the electrical signal obtained from the charging seat after the new energy vehicle is started; the wireless communication module 60 is used to establish a wireless communication connection with the audio device 20 of the new energy vehicle in the CD playback vehicle-mounted mode; the movement module 50 is used to send the audio data to the main control chip 41 when the audio data is read in the CD playback vehicle-mounted mode, and the main control chip 41 sends the audio data to the audio device 20 through the wireless communication module 60 for audio playback.

[0047] In this embodiment, the charging seat is a USB (Universal Serial Bus) socket interface set inside the new energy vehicle, which can be connected to the CD player 30 for the new energy vehicle through a TYPE-C USB data cable; one end of the TYPE-C USB data cable is connected to the charging seat, and the other end is connected to the vehicle-mounted connection circuit 42 of the CD player 30 for the new energy vehicle.

[0048] After the new energy vehicle is started, the charging seat obtains the electrical signal transmitted by the new energy vehicle, and transmits the electrical signal to the vehicle-mounted connection circuit 42 through the TYPE-C USB data cable; the vehicle-mounted connection circuit 42 can control the CD player 30 for the new energy vehicle to start up and automatically switch to the CD playback vehicle-mounted mode based on the electrical signal; the wireless communication module 60 establishes a wireless communication connection with the audio device 20 of the new energy vehicle in the CD playback vehicle-mounted mode; when the movement module 50 reads audio data in the CD playback vehicle-mounted mode, the audio data is sent to the main control chip 41, and the main control chip 41 sends the audio data to the audio device 20 through the wireless communication module 60 for audio playback.

[0049] Among them, the CD playback in-vehicle mode refers to the state in which the CD playback device 30 for the new energy vehicle can automatically use the wireless communication module 60 to automatically establish a wireless communication connection with the audio equipment 20 of the new energy vehicle; the wireless communication connection module can use Bluetooth signals to establish a wireless communication connection between the CD playback device 30 for the new energy vehicle and the audio equipment 20 of the new energy vehicle.

[0050] Through the above embodiments, it can be known that after the new energy vehicle is started, the vehicle-mounted connection circuit 42 can control the CD player 30 for the new energy vehicle to start up and automatically switch to the CD playback vehicle-mounted mode, and the wireless communication module 60 establishes a wireless communication connection with the audio device 20 of the new energy vehicle in the CD playback vehicle-mounted mode; when the core module 50 reads the audio data in the CD playback vehicle-mounted mode, the audio data is sent to the audio device 20 through the wireless communication module 60 for audio playback. In this way, the automatic process of starting up the CD player 30 for the new energy vehicle, switching to the CD playback vehicle-mounted mode, establishing a wireless communication connection with the audio device 20 of the new energy vehicle, and sending the audio data to the audio device 20 for audio playback is realized, so that the car can be driven safely, the possibility of accidents is reduced, and driving safety is improved.

[0051] In one embodiment, if Figure 1 As shown, the vehicle-mounted connection circuit 42 includes an interface chip U1, a first resistor R1, a first diode D1, a first switch S1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first transistor Q1;

[0052] The interface chip U1 is connected to the VBUS2 pin of the charging base and the first end of the first resistor R1; the normally-open end of the first switch S1 is connected to the second end of the first resistor R1 and the positive electrode of the first diode D1; the common end of the first switch S1 is connected to the first end of the second resistor R2; the second end of the second resistor R2 is connected to the first end of the third resistor R3; the second end of the third resistor R3 is connected to the base of the first transistor Q1; the collector of the first transistor Q1 is connected to the second end of the fourth resistor R4 and the PRST_N pin of the main control chip 41; the first end of the fourth resistor R4 is connected to the charging base.

[0053] In this embodiment, if Figure 1As shown, the second end of the second resistor R2 is also connected to the collector of the first transistor Q1; the base of the first transistor Q1 is connected to the DPWR_EN pin of the main control chip 41, and the cathode of the first diode D1, the emitter of the first transistor Q1, the emitter of the second transistor, and the normally closed end of the first switch S1 are all grounded. The first end of the first resistor R1 is connected to the VBUS2 pin of the charging stand through the interface chip U1; the first end of the fourth resistor R4 can be connected to the VDDRTC power supply provided by the charging stand, and the VDDRTC power supply is always maintained at +1.8V.

[0054] Among them, the interface chip U1 is a TYPE-C USB chip; the first switch S1 is one of a group of single-pole double-throw switches in a double-pole double-throw switch (DPDT), and the opening of the first switch S1 can be controlled by a DC voltage, that is, the first switch S1 can be controlled to switch to the normally open end ON pin; the first diode D1 can be a voltage-stabilizing diode; the specification of the first resistor R1 can be 1K; the specification of the first diode D1 can be 3V3; the specification of the second resistor R2 can be 10K; the specification of the third resistor R3 can be 2K2; the specification of the fourth resistor R4 can be 100K; the first transistor Q1 can be an NPN transistor, and its specification can be S8050; the second transistor can be an NPN transistor with a damping resistor, and its specification can be DTC124EKA.

[0055] In this embodiment, if Figure 1As shown, the CD player 30 for the new energy vehicle can be controlled to be turned on by the first resistor R1, the first diode D1, the first switch S1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first transistor Q1. Specifically, after the new energy vehicle is started, the electrical signal acquired by the charging seat is transmitted to the interface chip U1 through the VBUS2 pin, and the interface chip U1 transmits the electrical signal to the first resistor R1 and the first diode D1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally open pin ON of the first switch S1 to turn on the first switch S1. The stepped-down electrical signal +3.3V is transmitted to the second resistor R2, the third resistor R3, and the base of the first transistor Q1 to make the first transistor Q1 in the on state, and the P At this time, the RST_N signal will change from the original high potential to 0 potential, and the main control chip 41 obtains the PRST_N signal of 0 potential through the PRST_N pin to achieve reset, thereby turning on the CD player 30 for new energy vehicles; the CD player 30 for new energy vehicles is turned on under the control of the main control chip 41, and the operation of other modules is controlled by the main control chip 41; wherein, the DPWR_EN pin is connected to the base of the second transistor, because the DPWR_EN pin is 0 potential when the CD player 30 for new energy vehicles is turned off, so the second transistor is in the cut-off state.

[0056] Through the above embodiments, it can be known that when the vehicle-mounted connection circuit 42 receives the electrical signal transmitted by the charging seat, it can control the automatic start of the CD player 30 for the new energy vehicle through the interface chip U1, the first resistor R1, the first diode D1, the first switch S1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the first transistor Q1. Therefore, after the new energy vehicle is started, the CD player 30 for the new energy vehicle is automatically started through the vehicle-mounted connection circuit 42, so that safe driving can be achieved, the possibility of accidents is reduced, and driving safety is improved.

[0057] In one embodiment, if Figure 1 As shown, the vehicle-mounted connection circuit 42 further includes a fifth resistor R5, a second diode D2, a second switch S2, a sixth resistor R6 and a third transistor Q3;

[0058] The first end of the fifth resistor R5 is connected to the charging base, and the second end of the fifth resistor R5 is connected to the PC08 pin of the main control chip 41 and the collector of the third transistor Q3; the base of the third transistor Q3 is connected to the cathode of the second diode D2 and the first end of the sixth resistor R6; the anode of the second diode D2 is connected to the common end of the second switch S2; the normally open end of the second switch S2 is connected to the second end of the first resistor R1 and the anode of the first diode D1.

[0059] In this embodiment, if Figure 1 As shown, the emitter of the third transistor Q3, the second end of the sixth resistor R6, and the normally closed end of the second switch S2 are all grounded. The first end of the fifth resistor R5 can be connected to the +3.3VD power supply provided by the charging station.

[0060] Among them, the second switch S2 is one of a group of single-pole double-throw switches in a double-pole double-throw switch (DPDT), and the opening of the second switch S2 can be controlled by a DC voltage, that is, the second switch S2 can be controlled to switch to the normally open end ON pin; the specification of the second diode D2 can be 1N4148; the specification of the sixth resistor R6 can be NM; the third transistor Q3 can be an NPN transistor with a damping resistor, and its specification can be DTC124EKA; the specification of the fifth resistor R5 can be 10K.

[0061] In this embodiment, if Figure 1As shown, the CD player 30 for new energy vehicles can be controlled to automatically switch to the CD player vehicle mode through the fifth resistor R5, the second diode D2, the second switch S2, the sixth resistor R6 and the third transistor Q3. Specifically, after the new energy vehicle is started, the electrical signal acquired by the charging seat is transmitted to the interface chip U1 through the VBUS2 pin, and the interface chip U1 transmits the electrical signal to the first resistor R1 and the first diode D1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally open pin ON of the second switch S2 to turn on the second switch S2. The stepped-down electrical signal +3.3V is transmitted to the base of the third transistor Q3 through the second diode D2 to make the third transistor Q3 in a conducting state, and the PC_08 signal of the PC_08 pin becomes a low potential. At this time, the main control chip 41 determines that the CD player 30 for the new energy vehicle is in the CD playback vehicle mode, and automatically switches the CD player 30 for the new energy vehicle to the Bluetooth input mode through the wireless communication connection module in the CD playback vehicle mode to achieve the CD player 30 for the new energy vehicle and the audio device 20 of the new energy vehicle to establish a wireless communication connection. The Bluetooth input mode is a state in which a car Bluetooth signal can be received.

[0062] After the new energy vehicle is turned off, the charging seat VBUS2 is turned off, and the normally open end of the second switch S2 is switched to the normally closed end, which makes the third transistor Q3 in the cut-off state, and the PC_08 signal of the PC_08 pin becomes a high potential. After the main control chip reads the change of the PC_08 pin, a shutdown prompt window will pop up on the screen module of the CD player 30 for the new energy vehicle, and then the device will automatically shut down after 10 seconds.

[0063] Through the above embodiments, it can be known that when the vehicle-mounted connection circuit 42 receives the electrical signal transmitted by the charging seat, it can control the CD player 30 for the new energy vehicle to automatically switch to the CD playback vehicle-mounted mode through the fifth resistor R5, the second diode D2, the second switch S2, the sixth resistor R6 and the third transistor Q3. Therefore, after the new energy vehicle is started, the CD playback vehicle-mounted mode of the CD player 30 for the new energy vehicle is automatically switched through the vehicle-mounted connection circuit 42 to achieve the establishment of a wireless communication connection between the CD player 30 for the new energy vehicle and the audio device 20 of the new energy vehicle in the CD playback vehicle-mounted mode, so that safe driving can be achieved, the possibility of accidents is reduced, and driving safety is improved.

[0064] In one embodiment, if Figure 1 As shown, the interface chip U1 includes an A4 pin, an A5 pin, a B4 pin and a B9 pin, and the A4 pin, the A9 pin, the B4 pin and the B9 pin are all connected to the VBUS2 pin of the charging base.

[0065] In this embodiment, the interface chip U1 includes part A, part B, pin 1, pin 2, pin 3 and pin 4, the part A includes pin A1, pin A2, pin A3, pin A4, pin A5, pin A6, pin A7, pin A8, pin A9, pin A10, pin A11 and pin A12, the part B includes pin B1, pin B2, pin B3, pin B4, pin B5, pin B6, pin B7, pin B8, pin B9, pin B10, pin B11 and pin B12; wherein the pin A4, pin A9, pin B4 and pin B9 are all connected to the VBUS2 pin of the charging base; the pin A1, pin A12, pin B1, pin B12, pin 1, pin 2, pin 3 and pin 4 are all grounded.

[0066] In this embodiment, the VBUS2 pin is connected to the interface chip U1 , and the VBUS2 pin transmits the electrical signal to the first resistor R1 through the A4 pin, the A9 pin, the B4 pin, and the B9 pin of the interface chip U1 .

[0067] From the above embodiments, it can be known that the interface chip U1 realizes the transmission of the electrical signal, and then performs subsequent targeted processing according to the electrical signal.

[0068] The embodiment of the present invention also provides a control method for a CD player system of a new energy vehicle. Figure 4 1 is a flow chart of a control method for a CD player system for a new energy vehicle provided by an embodiment of the present invention. The control method for a CD player system for a new energy vehicle is applied to a CD player system for a new energy vehicle. Figure 4 As shown, the method includes the following steps S110-S150.

[0069] S110. When the new energy vehicle is started and generates an electrical signal, the charging seat transmits the electrical signal to the vehicle-mounted connection circuit.

[0070] In this embodiment, the CD playback system for new energy vehicles includes: a charging base and a CD playback device of the new energy vehicle; the CD playback device includes a main control module, a movement module and a wireless communication module; the movement module and the wireless communication module are connected to the main control module; the main control module is connected to the charging base; the main control module includes a main control chip and a vehicle-mounted connection circuit, the vehicle-mounted connection circuit is connected to the charging base, and the vehicle-mounted connection circuit is also connected to the main control chip; wherein the vehicle-mounted connection circuit is used to control the CD playback device to start up and automatically switch to the CD playback vehicle mode through the electrical signal obtained from the charging base after the new energy vehicle is started; the wireless communication module is used to establish a wireless communication connection with the audio equipment of the new energy vehicle in the CD playback vehicle mode; the movement module is used to send the audio data to the audio equipment through the wireless communication module for audio playback when the audio data is read in the CD playback vehicle mode.

[0071] In this embodiment, the charging seat is a USB (Universal Serial Bus) socket interface provided inside the new energy vehicle, which can be connected to the CD player via a TYPE-C USB data cable; one end of the TYPE-C USB data cable is connected to the charging seat, and the other end is connected to the vehicle-mounted connection circuit of the CD player. The vehicle-mounted connection circuit includes an interface chip U1, a first resistor R1, a first diode D1, a first switch S1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first transistor Q1, a fifth resistor R5, a second diode D2, a second switch S2, a sixth resistor R6 and a third transistor Q3;

[0072] When the new energy vehicle is started and generates an electrical signal, the VBUS2 pin of the charging base is connected to the interface chip U1 through the TYPE-C USB data line, and the VBUS2 pin transmits the electrical signal to the interface chip U1.

[0073] S120: The vehicle-mounted connection circuit generates a power-on signal for controlling the CD player in the CD player system of the new energy vehicle to start up according to the electrical signal, and transmits the signal to the main control chip.

[0074] In one embodiment, the vehicle-mounted connection circuit generates a power-on signal for controlling the CD player in the CD player system of the new energy vehicle according to the electrical signal, and transmits the power-on signal to the main control chip, including:

[0075] Converting the pin signal of the vehicle-mounted connection circuit based on the electrical signal to obtain the power-on signal;

[0076] The power-on signal is transmitted to the main control chip.

[0077] In this embodiment, when the charging base starts the new energy vehicle and generates an electrical signal, the VBUS2 pin of the charging base is connected to the interface chip U1 through the TYPE-C USB data line, and the VBUS2 pin transmits the electrical signal to the first resistor R1 and the first diode D1 through the interface chip U1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally open pin ON of the first switch S1 to turn on the first switch S1. The stepped-down electrical signal +3.3V is transmitted to the second resistor R2, the third resistor R3, and the base of the first transistor Q1 so that the first transistor Q1 is in the on state. At this time, the PRST_N signal will be changed from the original high potential to 0 potential, and the main control chip obtains the PRST_N signal of 0 potential through the PRST_N pin. Among them, the pin signal is the PRST_N signal generated by the PRST_N pin; the power-on signal is the PRST_N signal of 0 potential.

[0078] Through the above embodiment, the pin signal of the vehicle connection circuit is converted based on the electrical signal to obtain the power-on signal; the power-on signal is transmitted to the main control chip, so that subsequent targeted processing can be performed according to the power-on signal.

[0079] S130, the main control chip controls the CD player to start up according to the power-on signal and automatically switches to a CD player vehicle mode.

[0080] In this embodiment, when the new energy vehicle is started and an electrical signal is generated by the charging stand, the VBUS2 pin of the charging stand is connected to the interface chip U1 through the TYPE-C USB data line, and the VBUS2 pin transmits the electrical signal to the first resistor R1 and the first diode D1 through the interface chip U1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally open pin ON of the first switch S1 to turn on the first switch S1. The stepped-down electrical signal +3.3V is transmitted to the second resistor R2, the third resistor R3, and the base of the first transistor Q1 to make the first transistor Q1 in the on state. At this time, the PRST_N signal will be changed from the original high potential to 0 potential, and the main control chip obtains the 0 potential PRST_N signal through the PRST_N pin to realize reset and turn on the CD player; the CD player is turned on under the control of the main control chip, and the operation of other modules is controlled by the main control chip.

[0081] At the same time, the VBUS2 pin transmits the electrical signal to the first resistor R1 and the first diode D1 through the interface chip U1. At this time, the electrical signal is stepped down to +3.3V, and then the stepped-down electrical signal +3.3V is transmitted to the normally-open pin ON of the second switch S2 to turn on the second switch S2. The stepped-down electrical signal +3.3V is transmitted to the base of the third transistor Q3 through the second diode D2 to make the third transistor Q3 in the on-state. The PC_08 signal of the PC_08 pin becomes a low potential. At this time, the main control chip determines that the CD player is in the CD player vehicle-mounted mode, and automatically establishes a wireless communication connection between the CD player and the audio equipment of the new energy vehicle through the wireless communication connection module in the CD player vehicle-mounted mode.

[0082] After the new energy vehicle is turned off, the charging seat VBUS2 is turned off, and the normally open end of the second switch S2 is switched to the normally closed end, which makes the third transistor Q3 in the cut-off state, and the PC_08 signal of the PC_08 pin becomes a high potential. After the main control chip reads the change of the PC_08 pin, a shutdown prompt window will pop up on the screen module of the CD player, and then the device will automatically shut down after 10 seconds.

[0083] S140: The wireless communication module establishes a wireless communication connection with the audio equipment of the new energy vehicle in the CD playback vehicle mode.

[0084] In this embodiment, in the CD playback vehicle mode, the CD playback device is automatically switched to the Bluetooth input mode through the wireless communication connection module to establish a wireless communication connection between the CD playback device and the audio equipment of the new energy vehicle. The Bluetooth input mode is a state in which the car Bluetooth signal can be received.

[0085] Specifically, the wireless communication module establishes a wireless communication connection with the audio equipment of the new energy vehicle when the CD is played in the car mode, which may include: the wireless communication module obtains the car Bluetooth signal within a preset range; the car Bluetooth signal is paired and connected through the Bluetooth protocol to determine the connection result; if the connection result is a successful connection, a Bluetooth data channel is established between the CD playback device and the audio equipment of the new energy vehicle; if the connection result is a failed connection, a prompt that the Bluetooth connection is not successful can be sent to the display module of the CD playback device and / or the display module of the new energy vehicle.

[0086] S150: When the core module reads the audio data in the CD playback vehicle mode, the core module sends the audio data to the audio device through the wireless communication module to perform wireless communication connection for audio playback.

[0087] In this embodiment, when the core module reads the audio data in the CD playback vehicle mode, the audio data is sent to the audio equipment of the new energy vehicle through the wireless communication module to perform the audio playback wireless communication connection, which may include:

[0088] When the main control module determines that the CD is in the vehicle-mounted playback mode, the main control module sends a disc reading signal to the movement assembly;

[0089] The core module obtains the disc reading signal, and obtains the position of the disc in the CD player based on the disc reading signal to determine the disc reading order;

[0090] The core module performs a disc reading operation on each disc according to the disc reading sequence;

[0091] The movement module sequentially picks up the track of each disc and converts the track into the audio data signal respectively;

[0092] The core module sends the audio data to the audio equipment of the new energy vehicle based on the wireless communication module;

[0093] The audio device performs a playback operation based on the received audio data.

[0094] In this embodiment, the number of the discs may be one or more.

[0095] In this embodiment, when the core module reads the audio data in the CD playback vehicle mode, after sending the audio data to the audio device through the wireless communication module to perform wireless communication connection for audio playback, the method further includes:

[0096] The steering wheel button of the new energy vehicle sends a control signal to the main control chip through the wireless communication module;

[0097] The main control chip sends a corresponding switching signal to the core module based on the control signal;

[0098] The core module obtains the corresponding audio data based on the switching signal and sends it to the main control chip;

[0099] The main control chip sends the corresponding audio data to the audio device through the wireless communication module.

[0100] Therefore, the steering wheel buttons of the new energy vehicle can realize the operation of switching the audio of the CD player, which effectively improves the operability of the method.

[0101] Through the above implementation, it can be known that when the new energy vehicle is started and an electric signal is generated, the charging seat transmits the electric signal to the vehicle connection circuit; the vehicle connection circuit generates the power-on signal for controlling the CD player to start up according to the electric signal, and transmits it to the main control chip; the main control chip controls the CD player in the CD player system of the new energy vehicle to start up and automatically switch to the CD player vehicle mode according to the power-on signal; the wireless communication module establishes a wireless communication connection with the audio equipment of the new energy vehicle in the CD player vehicle mode; when the core module reads the audio data in the CD player vehicle mode, the audio data is sent to the audio equipment of the new energy vehicle through the wireless communication module for audio playback wireless communication connection. In this way, the automatic process of starting up the CD player, switching the CD player vehicle mode, establishing a wireless communication connection with the audio equipment of the new energy vehicle, and sending the audio data to the audio equipment for audio playback is realized, so that the car can be driven safely, the possibility of accidents is reduced, and driving safety is improved.

[0102] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A CD player for a new energy vehicle, characterized in that: It includes a main control module, a core module and a wireless communication module; the core module and the wireless communication module are connected to the main control module; the main control module is connected to a charging seat in a new energy vehicle; the main control module includes a main control chip and an on-board connection circuit, the on-board connection circuit is connected to the charging seat, and the on-board connection circuit is also connected to the main control chip; The vehicle-mounted connection circuit is used to control the CD player for the new energy vehicle to start up and automatically switch to the CD player vehicle-mounted mode through the electrical signal obtained from the charging seat after the new energy vehicle is started; The wireless communication module is used to establish a wireless communication connection with the audio equipment of the new energy vehicle when the CD is played in the vehicle-mounted mode; The core module is used to send the audio data to the audio device through the wireless communication module for audio playback when the audio data is read in the CD playback vehicle mode; The charging seat is a USB socket interface provided inside the new energy vehicle, and is connected to the CD player for the new energy vehicle via a TYPE-C USB data cable; one end of the TYPE-C USB data cable is connected to the charging seat, and the other end is connected to the vehicle-mounted connection circuit; The vehicle-mounted connection circuit includes an interface chip, a first resistor, a first diode, a first switch, a second resistor, a third resistor, a fourth resistor and a first transistor; The interface chip is connected to the VBUS2 pin of the charging cradle and the first end of the first resistor; the normally-open end of the first switch is connected to the second end of the first resistor and the positive electrode of the first diode; the common end of the first switch is connected to the first end of the second resistor; the second end of the second resistor is connected to the first end of the third resistor; the second end of the third resistor is connected to the base of the first transistor; the collector of the first transistor is connected to the second end of the fourth resistor and the PRST_N pin of the main control chip; the first end of the fourth resistor is connected to the charging cradle; Wherein, the interface chip is a TYPE-C USB chip; The vehicle-mounted connection circuit also includes a fifth resistor, a second diode, a second switch, a sixth resistor and a third transistor; The first end of the fifth resistor is connected to the charging base, the second end of the fifth resistor is connected to the PC08 pin of the main control chip and the collector of the third transistor; the base of the third transistor is connected to the cathode of the second diode and the first end of the sixth resistor; the anode of the second diode is connected to the common end of the second switch; the normally open end of the second switch is connected to the second end of the first resistor and the anode of the first diode; The interface chip includes an A4 pin, an A9 pin, a B4 pin and a B9 pin, and the A4 pin, the A9 pin, the B4 pin and the B9 pin are all connected to the VBUS2 pin of the charging base; The second end of the second resistor is also connected to the collector of the first transistor; the base of the first transistor is connected to the DPWR_EN pin of the main control chip, the cathode of the first diode, the emitter of the first transistor, and the normally closed end of the first switch S1 are all grounded; the first end of the first resistor is connected to the pin of the charging base through the interface chip; the first end of the fourth resistor is connected to the VDDRTC power supply provided by the charging base, and the VDDRTC power supply is maintained at +1.8V; After the new energy vehicle is started, the electrical signal acquired by the charging station is transmitted to the interface chip through the VBUS2 pin, and the interface chip transmits the electrical signal to the first resistor and the first diode, and the electrical signal is stepped down to +3.3V; The stepped-down electrical signal +3.3V is transmitted to the normally-open pin ON of the first switch to turn on the first switch, and the stepped-down electrical signal +3.3V is transmitted to the second resistor, the third resistor, and the base of the first transistor to turn on the first transistor. At this time, the PRST_N signal is changed from the original high potential to the 0 potential. The main control chip obtains the 0 potential PRST_N signal through the PRST_N pin to achieve reset, thereby turning on the CD player for the new energy vehicle; At the same time, the stepped-down electrical signal +3.3V is transmitted to the normally-open end of the second switch to turn on the second switch; the stepped-down electrical signal +3.3V is transmitted to the base of the third transistor through the second diode to make the third transistor in a conducting state, and the PC08 signal of the PC08 pin becomes a low potential; the main control chip determines that the CD player for the new energy vehicle is in the CD player vehicle mode, and automatically switches the CD player for the new energy vehicle to the Bluetooth input mode through the wireless communication module in the CD player vehicle mode to achieve wireless communication connection between the CD player for the new energy vehicle and the audio equipment of the new energy vehicle; wherein the Bluetooth input mode is a state of receiving a car Bluetooth signal; After the new energy vehicle is turned off, the VBUS2 pin of the charging seat is turned off, and the normally open end of the second switch is switched to the normally closed end, which makes the third transistor in the cut-off state, and the PC08 signal of the PC08 pin becomes a high potential; the main control chip reads the change of the PC08 pin, and a shutdown prompt window pops up on the screen module of the CD player for the new energy vehicle, and the device is automatically shut down; The wireless communication module uses a Bluetooth signal to establish a wireless communication connection between the CD player for the new energy vehicle and the audio equipment of the new energy vehicle.

2. A CD player system for new energy vehicles, characterized in that: include: A charging seat for a new energy vehicle and a CD player for the new energy vehicle; the CD player comprises a main control module, a movement module and a wireless communication module; the movement module and the wireless communication module are connected to the main control module; the main control module is connected to the charging seat; the main control module comprises a main control chip and an on-board connection circuit, the on-board connection circuit is connected to the charging seat, and the on-board connection circuit is also connected to the main control chip; wherein the on-board connection circuit is used to control the CD player to start up and automatically switch to the CD playback on-board mode through the electrical signal obtained from the charging seat after the new energy vehicle is started; the wireless communication module is used to establish a wireless communication connection with the audio equipment of the new energy vehicle in the CD playback on-board mode; the movement module is used to send the audio data to the audio equipment through the wireless communication module for audio playback when the audio data is read in the CD playback on-board mode; The charging seat is a USB socket interface provided inside the new energy vehicle, and is connected to the CD player for the new energy vehicle via a TYPE-C USB data cable; one end of the TYPE-C USB data cable is connected to the charging seat, and the other end is connected to the vehicle-mounted connection circuit; The vehicle-mounted connection circuit includes an interface chip, a first resistor, a first diode, a first switch, a second resistor, a third resistor, a fourth resistor and a first transistor; The interface chip is connected to the VBUS2 pin of the charging cradle and the first end of the first resistor; the normally open end of the first switch is connected to the second end of the second resistor and the positive electrode of the first diode; the common end of the first switch is connected to the first end of the second resistor; the second end of the second resistor is connected to the first end of the third resistor; the second end of the third resistor is connected to the base of the first transistor; the collector of the first transistor is connected to the second end of the fourth resistor and the PRST_N pin of the main control chip; the first end of the fourth resistor is connected to the charging cradle; Wherein, the interface chip is a TYPE-C USB chip; The vehicle-mounted connection circuit also includes a fifth resistor, a second diode, a second switch, a sixth resistor and a third transistor; The first end of the fifth resistor is connected to the charging base, the second end of the fifth resistor is connected to the PC08 pin of the main control chip and the collector of the third transistor; the base of the third transistor is connected to the cathode of the second diode and the first end of the sixth resistor; the anode of the second diode is connected to the common end of the second switch; the normally open end of the second switch is connected to the second end of the first resistor and the anode of the first diode; The interface chip includes an A4 pin, an A9 pin, a B4 pin and a B9 pin, and the A4 pin, the A9 pin, the B4 pin and the B9 pin are all connected to the VBUS2 pin of the charging base; The second end of the second resistor is also connected to the collector of the first transistor; the base of the first transistor is connected to the DPWR_EN pin of the main control chip, the cathode of the first diode, the emitter of the first transistor, and the normally closed end of the first switch S1 are all grounded; the first end of the first resistor is connected to the pin of the charging base through the interface chip; the first end of the fourth resistor is connected to the VDDRTC power supply provided by the charging base, and the VDDRTC power supply is maintained at +1.8V; After the new energy vehicle is started, the electrical signal acquired by the charging station is transmitted to the interface chip through the VBUS2 pin, and the interface chip transmits the electrical signal to the first resistor and the first diode, and the electrical signal is stepped down to +3.3V; The stepped-down electrical signal +3.3V is transmitted to the normally-open pin ON of the first switch to turn on the first switch, and the stepped-down electrical signal +3.3V is transmitted to the second resistor, the third resistor, and the base of the first transistor to turn on the first transistor. At this time, the PRST_N signal is changed from the original high potential to the 0 potential. The main control chip obtains the 0 potential PRST_N signal through the PRST_N pin to achieve reset, thereby turning on the CD player for the new energy vehicle; At the same time, the stepped-down electrical signal +3.3V is transmitted to the normally-open end of the second switch to turn on the second switch; the stepped-down electrical signal +3.3V is transmitted to the base of the third transistor through the second diode to make the third transistor in a conducting state, and the PC08 signal of the PC08 pin becomes a low potential; the main control chip determines that the CD player for the new energy vehicle is in the CD player vehicle mode, and automatically switches the CD player for the new energy vehicle to the Bluetooth input mode through the wireless communication module in the CD player vehicle mode to achieve wireless communication connection between the CD player for the new energy vehicle and the audio equipment of the new energy vehicle; wherein the Bluetooth input mode is a state of receiving a car Bluetooth signal; After the new energy vehicle is turned off, the VBUS2 pin of the charging seat is turned off, and the normally open end of the second switch is switched to the normally closed end, which makes the third transistor in the cut-off state, and the PC08 signal of the PC08 pin becomes a high potential; the main control chip reads the change of the PC08 pin, and a shutdown prompt window pops up on the screen module of the CD player for the new energy vehicle, and the device is automatically shut down; The wireless communication module uses a Bluetooth signal to establish a wireless communication connection between the CD player for the new energy vehicle and the audio equipment of the new energy vehicle.

3. A control method for a CD player system for a new energy vehicle as claimed in claim 2, characterized in that: include: When the new energy vehicle is started and generates an electrical signal, the charging station transmits the electrical signal to the vehicle-mounted connection circuit; The vehicle-mounted connection circuit generates a power-on signal for controlling the CD player in the CD player system of the new energy vehicle to start up according to the electrical signal, and transmits the signal to the main control chip; The main control chip controls the CD player to start up and automatically switches to the CD player vehicle mode according to the power-on signal; The wireless communication module establishes a wireless communication connection with the audio equipment of the new energy vehicle when the CD is played in the vehicle mode; When the core module reads the audio data in the CD playback vehicle mode, the core module sends the audio data to the audio device through the wireless communication module for audio playback; The charging seat is a USB socket interface provided inside the new energy vehicle, and is connected to the CD player for the new energy vehicle via a TYPE-C USB data cable; one end of the TYPE-C USB data cable is connected to the charging seat, and the other end is connected to the vehicle-mounted connection circuit; The vehicle-mounted connection circuit includes an interface chip, a first resistor, a first diode, a first switch, a second resistor, a third resistor, a fourth resistor and a first transistor; The interface chip is connected to the VBUS2 pin of the charging cradle and the first end of the first resistor; the normally open end of the first switch is connected to the second end of the second resistor and the positive electrode of the first diode; the common end of the first switch is connected to the first end of the second resistor; the second end of the second resistor is connected to the first end of the third resistor; the second end of the third resistor is connected to the base of the first transistor; the collector of the first transistor is connected to the second end of the fourth resistor and the PRST_N pin of the main control chip; the first end of the fourth resistor is connected to the charging cradle; Wherein, the interface chip is a TYPE-C USB chip; The vehicle-mounted connection circuit also includes a fifth resistor, a second diode, a second switch, a sixth resistor and a third transistor; The first end of the fifth resistor is connected to the charging base, the second end of the fifth resistor is connected to the PC08 pin of the main control chip and the collector of the third transistor; the base of the third transistor is connected to the cathode of the second diode and the first end of the sixth resistor; the anode of the second diode is connected to the common end of the second switch; the normally open end of the second switch is connected to the second end of the first resistor and the anode of the first diode; The interface chip includes an A4 pin, an A9 pin, a B4 pin and a B9 pin, and the A4 pin, the A9 pin, the B4 pin and the B9 pin are all connected to the VBUS2 pin of the charging base; The second end of the second resistor is also connected to the collector of the first transistor; the base of the first transistor is connected to the DPWR_EN pin of the main control chip, the cathode of the first diode, the emitter of the first transistor, and the normally closed end of the first switch S1 are all grounded; the first end of the first resistor is connected to the pin of the charging base through the interface chip; the first end of the fourth resistor is connected to the VDDRTC power supply provided by the charging base, and the VDDRTC power supply is maintained at +1.8V; After the new energy vehicle is started, the electrical signal acquired by the charging station is transmitted to the interface chip through the VBUS2 pin, and the interface chip transmits the electrical signal to the first resistor and the first diode, and the electrical signal is stepped down to +3.3V; The stepped-down electrical signal +3.3V is transmitted to the normally-open pin ON of the first switch to turn on the first switch, and the stepped-down electrical signal +3.3V is transmitted to the second resistor, the third resistor, and the base of the first transistor to turn on the first transistor. The PRST_N signal is then changed from the original high potential to 0 potential. The main control chip obtains the 0 potential PRST_N signal through the PRST_N pin to achieve reset, thereby turning on the CD player for the new energy vehicle; At the same time, the stepped-down electrical signal +3.3V is transmitted to the normally-open end of the second switch to turn on the second switch; the stepped-down electrical signal +3.3V is transmitted to the base of the third transistor through the second diode to make the third transistor in a conducting state, and the PC08 signal of the PC08 pin becomes a low potential; the main control chip determines that the CD player for the new energy vehicle is in the CD player vehicle mode, and automatically switches the CD player for the new energy vehicle to the Bluetooth input mode through the wireless communication module in the CD player vehicle mode to achieve wireless communication connection between the CD player for the new energy vehicle and the audio equipment of the new energy vehicle; wherein the Bluetooth input mode is a state of receiving a car Bluetooth signal; After the new energy vehicle is turned off, the VBUS2 pin of the charging seat is turned off, and the normally open end of the second switch is switched to the normally closed end, which makes the third transistor in the cut-off state, and the PC08 signal of the PC08 pin becomes a high potential; the main control chip reads the change of the PC08 pin, and a shutdown prompt window pops up on the screen module of the CD player for the new energy vehicle, and the device is automatically shut down; The wireless communication module uses a Bluetooth signal to establish a wireless communication connection between the CD player for the new energy vehicle and the audio equipment of the new energy vehicle.

4. The method according to claim 3, characterized in that The vehicle-mounted connection circuit generates a power-on signal for controlling the CD player in the CD player system of the new energy vehicle to start up according to the electrical signal, and transmits the power-on signal to the main control chip, including: Converting the pin signal of the vehicle-mounted connection circuit based on the electrical signal to obtain the power-on signal; The power-on signal is transmitted to the main control chip.

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