Vehicle-mounted refrigerator powered by USB Type-C

Abstract

The invention discloses a vehicle-mounted refrigerator powered by USB Type-C. The vehicle-mounted refrigerator comprises a Type-C charging line used for taking electricity and a vehicle-mounted refrigerator body, charging line Type-C connectors are arranged at the two ends of the Type-C charging line correspondingly, and a vehicle-mounted refrigerator power supply module is arranged in the vehicle-mounted refrigerator body; one charging line Type-C connector of the Type-C charging line is connected with a fast charging protocol charging module used for protocol adjustment of the input voltage of the Type-C charging line and power supply to the vehicle-mounted refrigerator power supply module, the fast charging protocol charging module is arranged, and the Type-C charging line is directly connected with a vehicle Type-C interface to take electricity; the input voltage of the Type-C charging wire is adjusted through the protocol of the quick charging protocol charging module, power is supplied to the vehicle-mounted refrigerator power supply module, and the function that the vehicle-mounted refrigerator applies USB Type-C power supply is achieved.

Description

[Technical field]

[0001] The present invention relates to a vehicle-mounted refrigerator powered by a USB Type-C. [Background Technology]

[0002] Existing car refrigerators installed in cars are generally powered by a cigarette lighter power supply port. However, cigarette lighter power supply ports are gradually being eliminated in existing cars. At the same time, the cigarette lighter power supply port requires a specially adapted converter and cable, making it inconvenient to connect the car refrigerator to the power supply after installation in the car. [Summary of the invention]

[0003] The present invention overcomes the shortcomings of the prior art and provides a car refrigerator powered by USB Type-C.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A car refrigerator powered by USB Type-C is characterized by comprising a Type-C charging cable for drawing power and a car refrigerator body, wherein Type-C charging cable connectors are provided at both ends, a car refrigerator power supply module is provided in the car refrigerator body, and one of the Type-C charging cable Type-C connectors is connected to a fast charging protocol charging module for adjusting the input voltage of the Type-C charging cable and supplying power to the car refrigerator power supply module.

[0006] The car refrigerator powered by USB Type-C as described above is characterized in that: a fast charging protocol charging module is arranged in the car refrigerator body, the output end of the fast charging protocol charging module is connected to the input end of the car refrigerator power supply module, and a car refrigerator Type-C interface connected to the input end of the fast charging protocol charging module is provided on the car refrigerator body, and one of the Type-C charging cable Type-C connectors is plugged into the Type-C interface of the car refrigerator.

[0007] As described above, a car refrigerator powered by USB Type-C is characterized in that: it also includes a converter, a fast charging protocol charging module is arranged in the converter, the converter is provided with a converter Type-C interface connected to the input end of the fast charging protocol charging module, one of the charging cable Type-C connectors of the Type-C charging cable is plugged into the converter Type-C interface, the converter is connected to a converter connection cable connected to the output end of the fast charging protocol charging module, the other end of the converter connection cable is provided with a connection cable plug connector, the car refrigerator body is provided with a car refrigerator socket connected to the input end of the car refrigerator power supply module, and the connection cable plug connector is plugged into the car refrigerator socket.

[0008] The above-mentioned car refrigerator using USB Type-C power supply is characterized in that it also includes a power supply head for drawing power from the outside, the power supply head is provided with a Type-C interface, and another Type-C connector of the Type-C charging cable is plugged into the Type-C interface of the power supply head.

[0009] The above-mentioned car refrigerator using USB Type-C power supply is characterized in that: the power supply head is an adapter plugged into an AC socket to draw power, the adapter is provided with a fast charging power supply module for converting AC power into DC power and establishing a protocol connection with a fast charging protocol charging module for power supply, the adapter is provided with two adapter pins respectively connected to the input end of the fast charging power supply module, and the Type-C interface of the power supply head is connected to the output end of the fast charging power supply module.

[0010] The above-mentioned car refrigerator using USB Type-C power supply is characterized in that: the power supply head is a cigarette lighter adapter head that is plugged into the car cigarette lighter socket to draw power, the cigarette lighter adapter head is provided with a voltage conversion module, and the plug-in part of the cigarette lighter adapter head is provided with at least two conductive parts of the adapter head that are respectively connected to the input end of the voltage conversion module, and the Type-C interface of the power supply head is connected to the output end of the voltage conversion module.

[0011] As described above, a car refrigerator using USB Type-C for power supply is characterized in that: a fast charging protocol charging module includes a Type-C input module connected to one of the Type-C charging cable Type-C connectors for drawing power, the Type-C input module is connected to a 5V low-voltage voltage regulator module for voltage stabilization, and a protocol output control module for adjusting output power parameters, the protocol output control module is connected to a power output and voltage sampling module connected to the car refrigerator power supply module for outputting power and collecting output power voltage, the 5V low-voltage voltage regulator module is connected to the protocol output control module for power supply, the input end of the Type-C input module serves as the input end of the fast charging protocol charging module, and the output end of the power output and voltage sampling module serves as the output end of the fast charging protocol charging module.

[0012] The above-mentioned car refrigerator using USB Type-C for power supply is characterized in that: the fast charging power supply module includes a rectifier and filter module for converting AC power into DC power and filtering, the rectifier and filter module is connected in sequence to a power switching module for switching power supply power and an output control and protocol connection module for establishing a protocol connection with a fast charging protocol charging module, the rectifier and filter module is connected to the output control and protocol connection module for power supply, the input end of the rectifier and filter module serves as the input end of the fast charging power supply module, and the output end of the output control and protocol connection module serves as the output of the output control and protocol connection module.

[0013] The above-mentioned car refrigerator using USB Type-C power supply is characterized in that: the Type-C input module includes a Type-C connection terminal J2, pins A1, A12, B1, and B12 of the Type-C connection terminal J2 are respectively connected to GND ground, pins A4, A9, B4, and B9 of the Type-C connection terminal J2 are respectively connected to the power supply VBUS, pin A5 of the Type-C connection terminal J2 is connected to GND ground via a capacitor C33, and pin B5 of the Type-C connection terminal J2 is connected to GND ground via a capacitor C34;

[0014] The 5V low-voltage regulator module includes a low-voltage regulator U33. Pin 1 of the low-voltage regulator U33 is connected to GND. Pin 2 of the low-voltage regulator U33 is connected to GND through capacitor C35. Pin 3 of the low-voltage regulator U33 is connected to the input power supply VBUS through the Type-C connection terminal J2 pin A4 of the Type-C input module. Pin 3 of the low-voltage regulator U33 is connected to GND through capacitor C36.

[0015] The protocol output control module includes a controller U32 of the LDR6328S model. Pin 1 of the controller U32 is connected to GND, pin 2 of the controller U32 is connected to the base of the transistor Q31, the collector of the transistor Q31 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module, and the emitter of the transistor Q31 is connected to one end of the resistor R36, one end of the resistor R34, the Type-C connection terminal pin A6 of the Type-C input module, and the Type-C connection terminal pin B6 of the Type-C input module through the resistor R33. The other end of the resistor R36 is connected to GND, and the other end of the resistor R34 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module. Pin 3 of the controller U32 is connected to one end of the resistor R37, one end of the resistor R35, and the Type-C connection terminal pin A of the Type-C input module through the resistor R39. 7 is connected to the Type-C connection terminal pin B7 of the Type-C input module, the other end of the resistor R37 is connected to GND, the other end of the resistor R35 is connected to pin 4 of the controller U32, and pin 5 of the controller U32 is connected to one end of the transient voltage suppressor TVS2 through the resistor R311, and the other end of the transient voltage suppressor TVS2 is connected to GND. Pin 6 of the controller U32 is connected to one end of the transient voltage suppressor TVS1 through the resistor R310, and the other end of the transient voltage suppressor TVS1 is connected to GND. Pin 7 of the controller U32 is connected to GND through the capacitor C34. Pin 8 of the controller U32 is respectively connected to the negative end of the diode D31, one end of the capacitor C33, and one end of the resistor R38. The positive end of the diode D31 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module, and the other end of the capacitor C33 and the other end of the resistor R38 are respectively connected to GND.

[0016] The power output and voltage sampling module includes a power output chip USB1. Pin 1 of the power output chip USB1 is respectively connected to pin A4 of the Type-C connection terminal J2 of the Type-C input module, one end of the capacitor C31, and one end of the resistor R31. The other end of the capacitor C31 is connected to GND. The other end of the resistor R31 is respectively connected to one end of the resistor R32, one end of the capacitor C32, and pin 7 of the controller U32. The other end of the resistor R32 and the other end of the capacitor C32 are respectively connected to GND.

[0017] The above-mentioned car refrigerator using USB Type-C power supply is characterized in that: the rectifier and filter module includes a rectifier BD1, one AC input end of the rectifier BD1 is connected to pin 4 of the transformer LF1, the other AC input end of the rectifier BD1 is connected to pin 3 of the transformer LF1, the pin 1 of the transformer LF1 is respectively connected to one end of the varistor RV1, one end of the capacitor CX1, one end of the resistor XR1, and one of the adapter pins, and the pin 2 of the transformer LF1 is respectively connected to the other end of the varistor RV1, the other end of the capacitor CX1, one end of the resistor XR2, and the fuse F1 One end is connected, the other end of fuse F1 is connected to another adapter pin, the other end of resistor XR1 is connected to the other end of resistor XR2, the positive output end of rectifier BD1 is connected to the positive end of electrolytic capacitor EC6, the positive end of electrolytic capacitor EC1, and one end of inductor L1 respectively, the other end of inductor L1 is connected to the positive end of electrolytic capacitor EC2 and the positive end of electrolytic capacitor EC3 respectively, the negative output end of rectifier BD1, the negative end of electrolytic capacitor EC6, the negative end of electrolytic capacitor EC1, the negative end of electrolytic capacitor EC2, and the negative end of electrolytic capacitor EC3 are connected to PGND ground respectively;

[0018] The power switching module includes a DK075GCD model switch tube U2. Pin 1 of the switch tube U2 is connected to one end of the resistor R17 and one end of the resistor R21 respectively. The other end of the resistor R21 and the pin F of the transformer T are connected to the PGND ground respectively. The other end of the resistor R17 is connected to one end of the resistor R16 and the pin E of the transformer T. The other end of the resistor R16 is connected to the positive end of the diode D5. The negative end of the diode D5 is connected to the drain end of the MOS tube Q2, one end of the resistor R19 and one end of the capacitor C9 respectively. The other end of the capacitor C9 is connected to the PGND ground. The gate end of the MOS tube Q2 is connected to The other end of resistor R19 is connected to the negative end of Zener diode ZD1, the positive end of Zener diode ZD1 is connected to PGND ground, the source end of MOS tube Q2 is connected to pin 3 of switch tube U2 and one end of capacitor C10 respectively, the other end of capacitor C10 is connected to PGND ground, pin 2 of switch tube U2 is connected to one end of capacitor C12 and pin 3 of photocoupler U3 respectively, the other end of capacitor C12, pin 4 of photocoupler U3 and pin 4 of switch tube U2 are connected to PGND ground, pin 9 of switch tube U2 is connected to one end of resistor RS1, one end of resistor RS2 and one end of resistor RS3 respectively, and resistor The other end of RS1, the other end of resistor RS2, and the other end of resistor RS3 are connected to PGND ground respectively. Pin 5 of switch tube U2 is connected to pin 6 of switch tube U2, one end of resistor R9, and pin B of transformer T respectively. The other end of resistor R9 is connected to the positive end of diode D2. The negative end of diode D2 is connected to one end of resistor R3, one end of resistor R4, one end of resistor R5, and one end of capacitor C4 respectively. The other end of resistor R3 is connected to the other end of resistor R4, the other end of resistor R5, the other end of capacitor C4, pin A of transformer T, and the positive end of electrolytic capacitor EC3 of rectifier and filter module respectively. Pin C of the transformer T is respectively connected to one end of the capacitor C1 and the positive end of the diode D1. The other end of the capacitor C1 is respectively connected to the negative end of the diode D1, the positive end of the electrolytic capacitor EC4, the positive end of the electrolytic capacitor EC5, one end of the resistor R8, and one end of the capacitor C3 through the resistor R1. Pin D of the transformer T, the negative end of the electrolytic capacitor EC4, the negative end of the electrolytic capacitor EC5, and the other end of the capacitor C3 are respectively connected to the SGND ground. The other end of the resistor R8 is connected to pin 1 of the optocoupler U3. Pin 8 of the switch tube U2 is connected to the positive end of the electrolytic capacitor EC3 of the rectifier and filter module through the resistor R14.

[0019] The output control and protocol connection module includes a WT6633P model protocol establishment chip U1. Pin 2 of the protocol establishment chip U1 is connected to the gate end of the MOS tube Q1 through a resistor R10. The source end of the MOS tube Q1 is respectively connected to pin 15 of the protocol establishment chip U1 and the positive end of the electrolytic capacitor EC5 of the power switching module. The drain end of the MOS tube Q1 is connected to pin 1 of the connection terminal J1. Pin 3 of the protocol establishment chip U1 is respectively connected to one end of the resistor R22, one end of the capacitor C13, and one end of the resistor R5. The other end of the resistor R22 is respectively connected to pin 6 of the protocol establishment chip U1 and one end of the resistor R23. The other end of the capacitor C13 and the other end of the resistor R23 are respectively connected to SGND ground. The other end of the resistor R5 is connected to pin 13 of the protocol establishment chip U1. Pin 4 of the protocol establishment chip U1 is connected to pin 4 of the connection terminal J1. Pin 5 of the protocol establishment chip U1 is connected to pin 2 of the connection terminal J1. Pin 7 of the protocol establishment chip U1 is connected to the connection terminal J1. Connect to terminal J1 pin 3, protocol establishment chip U1 pin 8 is respectively connected to one end of resistor R6 and one end of capacitor C8, the other end of capacitor C8 is connected to SGND ground, the other end of resistor R6 is connected to AGND ground, protocol establishment chip U1 pin 9 is connected to SGND ground, protocol establishment chip U1 pin 10 is connected to one end of resistor R13 through capacitor C7, the other end of resistor R13 is respectively connected to one end of resistor R11, one end of resistor R12, and protocol establishment chip U1 pin 14, the other end of resistor R11 is connected to protocol establishment chip U1 pin 11 through capacitor C6, the other end of resistor R12 is connected to optocoupler U3 pin 2 of the power switching module, protocol establishment chip U1 pin 12 is connected to one end of capacitor C5 through resistor R7, the other end of capacitor C5 is connected to SGND ground, protocol establishment chip U1 pin 16 and one end of resistor R2 are respectively connected to SGND ground, connection terminal J1 pin 5 and the other end of resistor R2 are respectively connected to AGND ground.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention sets a fast charging protocol charging module, which directly connects to the Type-C interface of the car through a Type-C charging cable to obtain power. The charging module adjusts the input voltage of the Type-C charging cable through the fast charging protocol and supplies power to the power supply module of the car refrigerator, realizing the function of applying USB Type-C power supply to the car refrigerator.

[0022] 2. The present invention can set the fast charging protocol charging module in the car refrigerator and electrically connect it to the car refrigerator power supply module to form a built-in USB Type-C powered car refrigerator, realizing the direct use of Type-C fast charging power supply function. In the built-in USB Type-C powered car refrigerator, the fast charging protocol charging module can be set on the control circuit board of the car refrigerator, and the fast charging protocol charging module can also be set in the car refrigerator as an independent circuit board electrically connected to the control circuit board of the car refrigerator; on the other hand, the fast charging protocol charging module can also be set in an external independent converter, and then electrically connected to the car refrigerator power supply module through the converter connecting line to form an external USB Type-C powered car refrigerator, realizing the function of allowing ordinary car refrigerators to use the TYPE-C interface power supply function.

[0023] 3. The present invention also provides a power supply, which can be an adapter. A fast charging power supply module is set in the adapter. The adapter takes the AC power from the socket, and the fast charging power supply module converts the AC power into DC power and establishes a protocol connection with the fast charging protocol charging module for power supply, and outputs the power through the Type-C interface of the power supply head; the power supply can also be a cigarette lighter adapter, which takes power from the car cigarette lighter socket through the cigarette lighter adapter, and establishes a protocol connection with the fast charging protocol charging module after the voltage is converted by the voltage conversion module, and outputs the power through the Type-C interface of the power supply head, so that the car refrigerator is easy to carry and can be powered at any time.

[0024] 4. The fast charging protocol charging module of the present invention is compatible with USB PD, QC and AFC protocols, and can draw power from an adapter that supports USB PD, QC and AFC protocols and supply power to a car refrigerator, with a wide range of applications. [Brief Description of the Drawings]

[0025] Figure 1 This is a structural diagram of the built-in TYPE-C powered car refrigerator of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the external TYPE-C powered car refrigerator of the present invention;

[0027] Figure 3 This is a schematic diagram of the car Type-C interface.

[0028] Figure 4 Schematic diagram of the adapter structure;

[0029] Figure 5 This is a schematic diagram of the cigarette lighter adapter structure;

[0030] Figure 6 This is the principle diagram of the invention directly plugging into the car Type-C interface to obtain power;

[0031] Figure 7 This is a schematic diagram of the principle of drawing power from an AC socket via an adapter;

[0032] Figure 8 This is a schematic diagram of the principle of the present invention of drawing power from a car cigarette lighter socket via a cigarette lighter adapter;

[0033] Figure 9 This is the circuit diagram of the fast charging protocol charging module of the present invention;

[0034] Figure 10 This is a circuit diagram of the fast charging power supply module of the present invention;

[0035] Figure 11 This is a schematic diagram of the Type-C charging cable of the present invention. [Specific implementation method]

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0038] like Figure 1 and Figure 3 As shown in FIG. 1 , a car refrigerator powered by USB Type-C includes a Type-C charging cable 1 for drawing power and a car refrigerator body 2. Type-C charging cable 1 has Type-C connectors 11 at both ends. A car refrigerator power supply module is provided inside the car refrigerator body 2. One of the Type-C connectors 11 of the Type-C charging cable 1 is connected to a fast charging protocol charging module 3 for adjusting the input voltage of the Type-C charging cable 1 and supplying power to the car refrigerator power supply module. After the car refrigerator is installed in the car, one of the Type-C connectors 11 of the Type-C charging cable 1 is directly plugged into the car. Figure 3The car's Type-C power supply port is connected to the Type-C connector 11 of the Type-C charging cable 1 and the fast-charging protocol charging module 3. When supplying power, the fast-charging protocol charging module 3 establishes a protocol connection with the car refrigerator, adjusts the input voltage of the Type-C charging cable 1, and then supplies power to the car refrigerator's power supply module, thus realizing the USB Type-C power supply function for the car refrigerator.

[0039] like Figure 1 As shown, the fast charging protocol charging module 3 is set in the car refrigerator body 2, and the output end of the fast charging protocol charging module 3 is connected to the input end of the car refrigerator power supply module, forming a built-in USB Type-C powered car refrigerator; the car refrigerator body 2 is provided with a car refrigerator Type-C interface 21 connected to the input end of the fast charging protocol charging module 3, one of the charging cable Type-C connectors 11 of the Type-C charging cable 1 is plugged into the car refrigerator Type-C interface 21, and the other charging cable Type-C connector 11 of the Type-C charging cable 1 is directly plugged into the car Type-C power supply interface to obtain power, thereby realizing the direct use of the Type-C fast charging power supply function. In this case, the fast charging protocol charging module 3 can be set on the control circuit board of the car refrigerator, and the fast charging protocol charging module 3 can also be set in the car refrigerator as an independent circuit board electrically connected to the control circuit board of the car refrigerator.

[0040] like Figure 2 As shown, the present case also includes a converter 4, a fast charging protocol charging module 3 is arranged in the converter 4, and a converter Type-C interface 41 is provided on the converter 4, which is connected to the input end of the fast charging protocol charging module 3, and one of the charging cable Type-C connectors 11 of the Type-C charging cable 1 is plugged into the converter Type-C interface 41, and the converter 4 is connected to a converter connection cable 42 connected to the output end of the fast charging protocol charging module 3, and the other end of the converter connection cable 42 is provided with a connection cable connector 43, and the car refrigerator body 2 is provided with a car refrigerator socket 22 connected to the input end of the car refrigerator power supply module, and the connection cable connector 43 is plugged into the car refrigerator socket 22 to form an external USB Type-C powered car refrigerator, and another charging cable Type-C connector 11 of the Type-C charging cable 1 is plugged into the car Type-C power supply interface to take power, so that the ordinary car refrigerator can use the TYPE-C interface power supply function. In this case, the number of conductive parts in the car refrigerator socket 22 and the number of conductive holes in the connecting wire connector 43 are the same, and this case can also be applied to sockets with different numbers of conductive parts and connectors with different numbers of conductive holes; Figure 2 In one embodiment of the present invention, two conductive parts are provided in the vehicle refrigerator socket 22, and two conductive holes are provided on the connecting wire connector 43.

[0041] like Figure 4-5 As shown, the device also includes a power supply head for drawing power from an external source. The power supply head is provided with a Type-C interface 51, and the other Type-C connector 11 of the Type-C charging cable 1 is plugged into the Type-C interface 51. In actual use, the Type-C connector 11 of the Type-C charging cable 1 can be connected to different power supply heads to draw power, thereby increasing usage scenarios.

[0042] like Figure 4 As shown, the power supply head is an adapter 52 that is plugged into an AC socket to draw power. The adapter 52 is equipped with a fast charging power supply module 6 for converting AC power into DC power and establishing a protocol connection with the fast charging protocol charging module 3 for power supply. The adapter 52 is provided with two adapter pins 53 that are respectively connected to the input end of the fast charging power supply module 6. The power supply head Type-C interface 51 is connected to the output end of the fast charging power supply module 6. Another charging cable Type-C connector 11 of the Type-C charging cable 1 is plugged into the power supply head Type-C interface 51 of the adapter 52. The provision of the adapter 5 can realize power drawing from the AC socket, converting the AC mains power into DC power through the fast charging power supply module 6 and establishing a protocol connection with the fast charging protocol charging module 3 for power supply, making it convenient to carry the car refrigerator at any time and power the car refrigerator.

[0043] like Figure 5 As shown, the power supply head is a cigarette lighter adapter 54 that plugs into the car's cigarette lighter socket to draw power. The cigarette lighter adapter 54 is equipped with a voltage conversion module. The plug portion of the cigarette lighter adapter 54 is provided with at least two conductive parts 55 of the adapter, each connected to the input end of the voltage conversion module. The power supply head Type-C interface 51 is connected to the output end of the voltage conversion module. The other charging cable Type-C connector 11 of the Type-C charging cable 1 is plugged into the power supply head Type-C interface 51 of the cigarette lighter adapter 54. The provision of the cigarette lighter adapter 54 allows power to be drawn from the car's cigarette lighter socket. After the voltage is converted by the voltage conversion module, a protocol connection is established with the fast charging protocol charging module 3 for power supply, making it convenient to carry and power the car refrigerator at any time.

[0044] like Figure 6-7As shown, the fast charging protocol charging module 3 includes a Type-C input module 31 connected to one of the Type-C charging cable Type-C connectors 11 of the Type-C charging cable 1 to obtain power. The Type-C input module 31 is connected to a 5V low-voltage voltage regulator module 32 for voltage stabilization, and a protocol output control module 33 for adjusting the output power parameters. The protocol output control module 33 is connected to a power output and voltage sampling module 34 connected to the vehicle refrigerator power supply module for outputting power and collecting the output power voltage. The 5V low-voltage voltage regulator module 32 is connected to the protocol output control module 33 for power supply. When the fast charging protocol charging module 3 is working, the Type-C charging cable 1 draws power from the outside and inputs it to the Type-C input module 31. The protocol output control module 33 communicates with the car refrigerator intelligently and adjusts the output power parameters according to the protocol. The power output and voltage sampling module 34 provides the car refrigerator with a power supply with appropriate power parameters such as power, current and voltage. At the same time, the power output and voltage sampling module 34 collects the output power voltage and feeds it back to the protocol output control module 33, so that the protocol output control module 33 dynamically adjusts the output power parameters to keep the output power stable.

[0045] like Figure 9 As shown, the protocol output control module 33 includes a controller U32 of the LDR6328S model. The LDR6328S controller U32 in this case is a sink controller compatible with USB PD, QC and AFC protocols. The LDR6328S controller U32 can draw power from an adapter that supports USB PD, QC and AFC protocols, and then power the car refrigerator. For example, the adapter can be configured to output the required power to power the car refrigerator. At the same time, the LDR6328S controller U32 is also compatible with traditional USB power adapters. In this case, the Type-C fast charging interface adopts advanced communication protocol technology, such as USB Power Delivery (USB PD) protocol. The USB PD protocol can realize intelligent communication between the car refrigerator and the adapter, and negotiate the appropriate charging power, current and voltage according to the characteristics and charging requirements of the car refrigerator. This intelligent communication protocol ensures the efficiency, safety and reliability of the charging process.

[0046] like Figure 1-2As shown, the input end of the Type-C input module 31 serves as the input end of the fast charging protocol charging module 3, and the output end of the power output and voltage sampling module 34 serves as the output end of the fast charging protocol charging module 3. When the fast charging protocol charging module 3 is built into the car refrigerator, the Type-C input module 31 is connected to the car refrigerator Type-C interface 21, and the power output and voltage sampling module 34 is connected to the car refrigerator power supply module of the car refrigerator; when the fast charging protocol charging module 3 is set after the converter 4, the Type-C input module 31 is connected to the converter Type-C interface 41, and the power output and voltage sampling module 34 is connected to the connection line Type-C connector 43.

[0047] like Figure 7 and Figure 10 As shown, the fast charging power supply module 6 includes a rectifier and filter module 61 for converting AC power into DC power and filtering. The rectifier and filter module 61 is connected in sequence to a power switching module 62 for switching power supply power and an output control and protocol connection module 63 for establishing a protocol connection with the fast charging protocol charging module 3. The rectifier and filter module 61 is connected to the output control and protocol connection module 63 for power supply. The input end of the rectifier and filter module 61 serves as the input end of the fast charging power supply module 6, and the output end of the output control and protocol connection module 63 serves as the output end of the output control and protocol connection module 63. Among them, the power switching module 62 includes a DK075GCD model switch tube U2; the output control and protocol connection module 63 includes a WT6633P model protocol establishment chip U1.

[0048] like Figure 10As shown, when plugging in adapter 5, the AC input is typically 85-265V AC. The input AC power is converted to DC by rectifier BD1 in rectification and filtering module 61. High-frequency noise is removed by subsequent filter capacitors and EMI filtering circuits before being output to power switching module 62 to ensure input voltage stability. Switching transistor U2, model DK075GCD, in power switching module 62 operates in quasi-resonant mode, controlling the energy storage and release of the transformer through high-frequency switching. Quasi-resonant mode optimizes switching timing and reduces switching losses by detecting the resonant point of the transformer's leakage inductance and parasitic capacitance. Furthermore, diode D1, model DK100R05VM, is used for synchronous rectification on the secondary side, replacing a traditional Schottky diode. When the transformer's secondary releases energy, diode D1 conducts, efficiently transferring the energy to the output. Synchronous rectification significantly reduces rectification losses, boosting efficiency to 94.2%. The WT6633P protocol establishment chip U1 in the output control and protocol connection module 63 communicates with the car refrigerator being charged via the USB-C interface, identifies the fast-charging protocol supported by the car refrigerator, and dynamically adjusts the output. For example, PD3.0 supports multiple voltage levels, including 5V / 3A, 9V / 3A, 15V / 3A, and 20V / 5A, with a maximum output of 100W for extended periods. QC3.0 supports Qualcomm's fast-charging protocol, making it compatible with more Android devices. Furthermore, the output of the output control and protocol connection module 63 also includes filter capacitors and inductors to ensure stable output voltage and reduce ripple.

[0049] like Figure 11 As shown, Type-C charging cable 1 includes the HUSB332B chip, a USB Type-C E-Marker chip developed by Hynetek. It supports the USB PD 3.1 fast charging protocol and can deliver up to 240W 48V / 5A power. Its fast charging principle is based on the power transmission and communication mechanism of USB Type-C. Specifically, the chip has a built-in BMC Biphase Mark Coding communication module, which communicates bidirectionally with the power source and device sink via the CC Configuration Channel line to negotiate the optimal voltage and current combination.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A car refrigerator powered by USB Type-C, characterized by: The invention comprises a Type-C charging cable (1) for obtaining power and a vehicle refrigerator body (2), wherein both ends of the Type-C charging cable (1) are provided with a charging cable Type-C connector (11), a vehicle refrigerator power supply module is provided in the vehicle refrigerator body (2), and one of the charging cable Type-C connectors (11) of the Type-C charging cable (1) is connected to a fast charging protocol charging module (3) for adjusting the input voltage of the Type-C charging cable (1) and supplying power to the vehicle refrigerator power supply module.

2. The USB Type-C powered car refrigerator according to claim 1, characterized in that: The fast charging protocol charging module (3) is arranged in the vehicle refrigerator body (2); the output end of the fast charging protocol charging module (3) is connected to the input end of the vehicle refrigerator power supply module; the vehicle refrigerator body (2) is provided with a vehicle refrigerator Type-C interface (21) connected to the input end of the fast charging protocol charging module (3); and one of the charging cable Type-C connectors (11) of the Type-C charging cable (1) is plugged into the vehicle refrigerator Type-C interface (21).

3. The USB Type-C powered car refrigerator according to claim 1, characterized in that: The invention also includes a converter (4), a fast charge protocol charging module (3) is arranged in the converter (4), a converter Type-C interface (41) connected to the input end of the fast charge protocol charging module (3) is provided on the converter (4), one charging cable Type-C connector (11) of the Type-C charging cable (1) is plugged into the converter Type-C interface (41), the converter (4) is connected to a converter connecting cable (42) connected to the output end of the fast charge protocol charging module (3), the other end of the converter connecting cable (42) is provided with a connecting cable plug connector (43), a vehicle refrigerator socket (22) connected to the input end of the vehicle refrigerator power supply module is provided on the vehicle refrigerator body (2), and the connecting cable plug connector (43) is plugged into the vehicle refrigerator socket (22).

4. The USB Type-C powered car refrigerator according to any one of claims 1 to 3, characterized in that: The device also includes a power supply head for drawing power from the outside, wherein the power supply head is provided with a Type-C interface (51), and another charging cable Type-C connector (11) of the Type-C charging cable (1) is plugged into the Type-C interface (51) of the power supply head.

5. The USB Type-C powered car refrigerator according to claim 4, characterized in that: The power supply head is an adapter (52) plugged into an AC socket to draw power. The adapter (52) is provided with a fast charging power supply module (6) for converting AC power into DC power and establishing a protocol connection with the fast charging protocol charging module (3) for power supply. The adapter (52) is provided with two adapter pins (53) respectively connected to the input end of the fast charging power supply module (6). The power supply head Type-C interface (51) is connected to the output end of the fast charging power supply module (6).

6. The USB Type-C powered car refrigerator according to claim 4, characterized in that: The power supply head is a cigarette lighter conversion head (54) plugged into a car cigarette lighter socket to obtain power. A voltage conversion module is provided in the cigarette lighter conversion head (54). At least two conversion head conductive parts (55) are provided on the plug-in portion of the cigarette lighter conversion head (54), which are respectively connected to the input end of the voltage conversion module. The power supply head Type-C interface (51) is connected to the output end of the voltage conversion module.

7. The USB Type-C powered car refrigerator according to claim 1, characterized in that: The fast charge protocol charging module (3) includes a Type-C input module (31) connected to one of the Type-C charging cable Type-C connectors (11) of the Type-C charging cable (1) to obtain power. The Type-C input module (31) is connected to a 5V low-voltage stabilizing module (32) for voltage stabilization and a protocol output control module (33) for adjusting output power parameters. The protocol output control module (33) is connected to a power output and voltage sampling module (34) connected to the vehicle refrigerator power supply module for outputting power and collecting output power voltage. The 5V low-voltage stabilizing module (32) is connected to the protocol output control module (33) for power supply. The input end of the Type-C input module (31) serves as the input end of the fast charge protocol charging module (3), and the output end of the power output and voltage sampling module (34) serves as the output end of the fast charge protocol charging module (3).

8. The USB Type-C powered car refrigerator according to claim 5, characterized in that: The fast charging power supply module (6) includes a rectifier filter module (61) for converting alternating current into direct current and filtering the power supply. The rectifier filter module (61) is sequentially connected to a power switching module (62) for switching power supply power and an output control and protocol connection module (63) for establishing a protocol connection with the fast charging protocol charging module (3). The rectifier filter module (61) is connected to the output control and protocol connection module (63) for power supply. The input end of the rectifier filter module (61) serves as the input end of the fast charging power supply module (6), and the output end of the output control and protocol connection module (63) serves as the output of the output control and protocol connection module (63).

9. The USB Type-C powered car refrigerator according to claim 7, characterized in that: The Type-C input module (31) includes a Type-C connection terminal J2, wherein pins A1, A12, B1, and B12 of the Type-C connection terminal J2 are connected to the GND ground respectively, pins A4, A9, B4, and B9 of the Type-C connection terminal J2 are connected to the power supply VBUS respectively, pin A5 of the Type-C connection terminal J2 is connected to the GND ground via a capacitor C33, and pin B5 of the Type-C connection terminal J2 is connected to the GND ground via a capacitor C34; The 5V low-voltage regulator module (32) includes a low-voltage regulator U33, wherein pin 1 of the low-voltage regulator U33 is connected to the GND ground, pin 2 of the low-voltage regulator U33 is connected to the GND ground via a capacitor C35, pin 3 of the low-voltage regulator U33 is connected to the input power supply VBUS via the Type-C connection terminal J2 pin A4 of the Type-C input module (31), and pin 3 of the low-voltage regulator U33 is connected to the GND ground via a capacitor C36; The protocol output control module (33) includes a controller U32 of the LDR6328S model, wherein the controller U32 pin 1 is connected to the GND ground, the controller U32 pin 2 is connected to the base of the transistor Q31, the transistor Q31 collector is connected to the low-voltage regulator U33 pin 2 of the 5V low-voltage regulator module (32), the transistor Q31 emitter is connected to one end of the resistor R36, one end of the resistor R34, the Type-C connection terminal pin A6 of the Type-C input module (31) and the Type-C connection terminal pin B6 of the Type-C input module (31) through the resistor R33, the other end of the resistor R36 is connected to the GND ground, the other end of the resistor R34 is connected to the low-voltage regulator U33 pin 2 of the 5V low-voltage regulator module (32), and the controller U32 pin 3 is connected to one end of the resistor R37, one end of the resistor R35, the Type-C input module (31) through the resistor R39. The C connection terminal pin A7 is connected to the Type-C connection terminal pin B7 of the Type-C input module (31), the other end of the resistor R37 is connected to the GND ground, the other end of the resistor R35 is connected to the controller U32 pin 4, the controller U32 pin 5 is connected to one end of the transient voltage suppressor TVS2 through the resistor R311, the other end of the transient voltage suppressor TVS2 is connected to the GND ground, the controller U32 pin 6 is connected to one end of the transient voltage suppressor TVS1 through the resistor R310, the other end of the transient voltage suppressor TVS1 is connected to the GND ground, the controller U32 pin 7 is connected to the GND ground through the capacitor C34, the controller U32 pin 8 is respectively connected to the negative end of the diode D31, one end of the capacitor C33, and one end of the resistor R38, the positive end of the diode D31 is connected to the low voltage regulator U33 pin 2 of the 5V low voltage regulator module (32), the other end of the capacitor C33 and the other end of the resistor R38 are respectively connected to the GND ground; The power output and voltage sampling module (34) includes a power output chip USB1, wherein the pin 1 of the power output chip USB1 is respectively connected to the Type-C connection terminal J2 pin A4 of the Type-C input module (31), one end of a capacitor C31, and one end of a resistor R31, and the other end of the capacitor C31 is connected to the GND ground; the other end of the resistor R31 is respectively connected to one end of a resistor R32, one end of a capacitor C32, and pin 7 of a controller U32, and the other end of the resistor R32 and the other end of the capacitor C32 are respectively connected to the GND ground.

10. The USB Type-C powered car refrigerator according to claim 8, characterized in that: The rectifier filter module (61) includes a rectifier BD1, one AC input end of the rectifier BD1 is connected to the pin 4 of the transformer LF1, the other AC input end of the rectifier BD1 is connected to the pin 3 of the transformer LF1, the pin 1 of the transformer LF1 is respectively connected to one end of the varistor RV1, one end of the capacitor CX1, one end of the resistor XR1, and one of the adapter pins (53), the pin 2 of the transformer LF1 is respectively connected to the other end of the varistor RV1, the other end of the capacitor CX1, one end of the resistor XR2, and one end of the fuse F1, and the fuse The other end of F1 is connected to another adapter pin (53), the other end of resistor XR1 is connected to the other end of resistor XR2, the positive output end of rectifier BD1 is respectively connected to the positive end of electrolytic capacitor EC6, the positive end of electrolytic capacitor EC1, and one end of inductor L1, the other end of inductor L1 is respectively connected to the positive end of electrolytic capacitor EC2 and the positive end of electrolytic capacitor EC3, and the negative output end of rectifier BD1, the negative end of electrolytic capacitor EC6, the negative end of electrolytic capacitor EC1, the negative end of electrolytic capacitor EC2, and the negative end of electrolytic capacitor EC3 are respectively connected to PGND ground; The power switching module (62) includes a switch tube U2 of the DK075GCD model, wherein the pin 1 of the switch tube U2 is respectively connected to one end of the resistor R17 and one end of the resistor R21, the other end of the resistor R21 and the pin F of the transformer T are respectively connected to the PGND ground, the other end of the resistor R17 is respectively connected to one end of the resistor R16 and the pin E of the transformer T, the other end of the resistor R16 is connected to the positive end of the diode D5, the negative end of the diode D5 is respectively connected to the drain end of the MOS tube Q2, one end of the resistor R19 and one end of the capacitor C9, the other end of the capacitor C9 is connected to the PGND ground, and the gate end of the MOS tube Q2 is respectively connected to the MOSFET Q2. Connected to the other end of resistor R19 and the negative end of Zener diode ZD1, the positive end of Zener diode ZD1 is connected to PGND ground, the source end of MOS tube Q2 is connected to pin 3 of switch tube U2 and one end of capacitor C10 respectively, the other end of capacitor C10 is connected to PGND ground, pin 2 of switch tube U2 is connected to one end of capacitor C12 and pin 3 of photoelectric coupler U3 respectively, the other end of capacitor C12, pin 4 of photoelectric coupler U3 and pin 4 of switch tube U2 are connected to PGND ground, pin 9 of switch tube U2 is connected to one end of resistor RS1, one end of resistor RS2 and one end of resistor RS3 respectively, resistor RS 1, the other end of the resistor RS2, and the other end of the resistor RS3 are connected to the PGND ground respectively, the switch tube U2 pin 5 is connected to the switch tube U2 pin 6, one end of the resistor R9, and the transformer T pin B respectively, the other end of the resistor R9 is connected to the positive end of the diode D2, the negative end of the diode D2 is connected to one end of the resistor R3, one end of the resistor R4, one end of the resistor R5, and one end of the capacitor C4 respectively, the other end of the resistor R3 is connected to the other end of the resistor R4, the other end of the resistor R5, the other end of the capacitor C4, the transformer T pin A, and the positive end of the electrolytic capacitor EC3 of the rectifier filter module (61), the transformer The pin C of the transformer T is respectively connected to one end of the capacitor C1 and the positive end of the diode D1, the other end of the capacitor C1 is respectively connected to the negative end of the diode D1, the positive end of the electrolytic capacitor EC4, the positive end of the electrolytic capacitor EC5, one end of the resistor R8, and one end of the capacitor C3 through the resistor R1, the pin D of the transformer T, the negative end of the electrolytic capacitor EC4, the negative end of the electrolytic capacitor EC5, and the other end of the capacitor C3 are respectively connected to the SGND ground, the other end of the resistor R8 is connected to the pin 1 of the photocoupler U3, and the pin 8 of the switch tube U2 is connected to the positive end of the electrolytic capacitor EC3 of the rectifier filter module (61) through the resistor R14; The output control and protocol connection module (63) includes a WT6633P model protocol establishment chip U1, wherein pin 2 of the protocol establishment chip U1 is connected to the gate end of the MOS tube Q1 through a resistor R10, the source end of the MOS tube Q1 is respectively connected to pin 15 of the protocol establishment chip U1 and the positive end of the electrolytic capacitor EC5 of the power switching module (62), the drain end of the MOS tube Q1 is connected to pin 1 of the connection terminal J1, pin 3 of the protocol establishment chip U1 is respectively connected to one end of the resistor R22, one end of the capacitor C13, and one end of the resistor R5, the other end of the resistor R22 is respectively connected to pin 6 of the protocol establishment chip U1 and one end of the resistor R23, the other end of the capacitor C13 and the other end of the resistor R23 are respectively connected to SGND ground, the other end of the resistor R5 is connected to pin 13 of the protocol establishment chip U1, pin 4 of the protocol establishment chip U1 is connected to pin 4 of the connection terminal J1, pin 5 of the protocol establishment chip U1 is connected to pin 2 of the connection terminal J1, and pin 7 of the protocol establishment chip U1 is connected to the SGND ground. The pin 8 of the protocol establishment chip U1 is connected to one end of the resistor R6 and one end of the capacitor C8 respectively, the other end of the capacitor C8 is connected to the SGND ground, the other end of the resistor R6 is connected to the AGND ground, the pin 9 of the protocol establishment chip U1 is connected to the SGND ground, the pin 10 of the protocol establishment chip U1 is connected to one end of the resistor R13 through the capacitor C7, the other end of the resistor R13 is connected to one end of the resistor R11, one end of the resistor R12 and the pin 14 of the protocol establishment chip U1 respectively, the other end of the resistor R11 is connected to the pin 11 of the protocol establishment chip U1 through the capacitor C6, the other end of the resistor R12 is connected to the pin 2 of the photoelectric coupler U3 of the power switching module (62), the pin 12 of the protocol establishment chip U1 is connected to one end of the capacitor C5 through the resistor R7, the other end of the capacitor C5 is connected to the SGND ground, the pin 16 of the protocol establishment chip U1 and one end of the resistor R2 are connected to the SGND ground respectively, and the pin 5 of the connection terminal J1 and the other end of the resistor R2 are connected to the AGND ground respectively.

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