A car refrigerator powered by USB Type-C

Abstract

This utility model discloses a car refrigerator powered by USB Type-C, including a Type-C charging cable for power supply and a car refrigerator body. The Type-C charging cable has Type-C connectors at both ends. The car refrigerator body contains a car refrigerator power supply module. One of the Type-C connectors of the Type-C charging cable is connected to a fast-charging protocol module for regulating the input voltage of the Type-C charging cable and supplying power to the car refrigerator power supply module. By setting up the fast-charging protocol module, it directly connects to the car's Type-C interface via the Type-C charging cable to draw power, and regulates the input voltage of the Type-C charging cable via the fast-charging protocol module to supply power to the car refrigerator power supply module, thus realizing the function of using USB Type-C power supply for the car refrigerator.

Description

[Technical Field]

[0001] This utility model relates to a car refrigerator powered by USB Type-C. [Background Technology]

[0002] Currently, car refrigerators installed in vehicles are generally powered by the cigarette lighter power interface. However, the cigarette lighter power interface is being phased out in modern cars. In addition, the cigarette lighter power interface requires a specific adapter and cable, which makes it inconvenient to connect the power supply after the car refrigerator is installed in the car. [Utility Model Content]

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

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A car refrigerator powered by USB Type-C is characterized in that it includes a Type-C charging cable for power supply and a car refrigerator body. The Type-C charging cable has Type-C connectors at both ends. The car refrigerator body has a car refrigerator power supply module. One of the Type-C connectors of the Type-C charging cable 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 vehicle refrigerator using USB Type-C power supply as described above is characterized in that: a fast charging protocol charging module is installed inside the vehicle refrigerator body, the output end of the fast charging protocol charging module is connected to the input end of the vehicle refrigerator power supply module, the vehicle refrigerator body is provided with a vehicle refrigerator Type-C interface connected to the input end of the fast charging protocol charging module, and one of the Type-C connectors of the Type-C charging cable is plugged into the vehicle refrigerator Type-C interface.

[0007] The vehicle refrigerator using USB Type-C power supply as described above is characterized by: further comprising a converter, a fast charging protocol charging module disposed within the converter, a converter Type-C interface connected to the input terminal of the fast charging protocol charging module, one Type-C connector of the Type-C charging cable being plugged into the converter Type-C interface, the converter being connected to a converter connecting cable connected to the output terminal of the fast charging protocol charging module, the other end of the converter connecting cable being provided with a connecting cable connector, and a vehicle refrigerator socket connected to the input terminal of the vehicle refrigerator power supply module on the vehicle refrigerator body, the connecting cable connector being plugged into the vehicle refrigerator socket.

[0008] The car refrigerator using USB Type-C power supply as described above is characterized in that: it further includes a power tap for drawing power from the outside, the power tap is provided with a power tap Type-C interface, and the other Type-C connector of the Type-C charging cable is plugged into the power tap Type-C interface.

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

[0010] The car refrigerator using USB Type-C power supply as described above is characterized in that: the power source is a cigarette lighter adapter that plugs into the car cigarette lighter socket to draw power; the cigarette lighter adapter contains a voltage conversion module; the plug portion of the cigarette lighter adapter has at least two conductive parts that are respectively connected to the input terminal of the voltage conversion module; and the Type-C interface of the power source is connected to the output terminal of the voltage conversion module.

[0011] As described above, a car refrigerator powered by USB Type-C is characterized in that: the fast charging protocol charging module includes a Type-C input module that is connected to one of the Type-C charging cable's Type-C connectors for power supply; the Type-C input module is connected to a 5V low-voltage regulator module for voltage regulation 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 acquiring output power voltage; the 5V low-voltage regulator module is connected to the protocol output control module for power supply; the input terminal of the Type-C input module serves as the input terminal of the fast charging protocol charging module; and the output terminal of the power output and voltage sampling module serves as the output terminal of the fast charging protocol charging module.

[0012] The above-described in-vehicle refrigerator powered by USB Type-C is characterized in that: the fast charging power module includes a rectifier and filter module for converting AC power to DC power and filtering it; the rectifier and filter module is sequentially connected to a power switching module for switching power supply and an output control and protocol connection module for establishing a protocol connection with the fast charging protocol 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 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-described 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 through capacitor C33, and pin B5 of the Type-C connection terminal J2 is connected to GND ground through 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 ground. Pin 2 of the low-voltage regulator U33 is connected to GND ground 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 ground through capacitor C36.

[0015] The protocol output control module includes an LDR6328S controller U32. Pin 1 of controller U32 is connected to GND. Pin 2 of controller U32 is connected to the base of transistor Q31. The collector of transistor Q31 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module. The emitter of transistor Q31 is connected via resistor R33 to one end of resistor R36, one end of resistor R34, pin A6 of the Type-C input module, and pin B6 of the Type-C input module. The other end of resistor R36 is connected to GND. The other end of resistor R34 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module. Pin 3 of controller U32 is connected via resistor R39 to one end of resistor R37, one end of resistor R35, and pin A6 of the Type-C input module. 7. Connect to pin B7 of the Type-C input module. Connect the other end of resistor R37 to GND. Connect the other end of resistor R35 to pin 4 of controller U32. Connect pin 5 of controller U32 to one end of transient voltage suppressor TVS2 through resistor R311. Connect the other end of transient voltage suppressor TVS2 to GND. Connect pin 6 of controller U32 to one end of transient voltage suppressor TVS1 through resistor R310. Connect the other end of transient voltage suppressor TVS1 to GND. Connect pin 7 of controller U32 to GND through capacitor C34. Connect pin 8 of controller U32 to the negative terminal of diode D31, one end of capacitor C33, and one end of resistor R38. Connect the positive terminal of diode D31 to pin 2 of low voltage regulator U33 of 5V low voltage regulator module. Connect the other end of capacitor C33 and the other end of resistor R38 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 connected to pin A4 of the Type-C connection terminal J2 of the Type-C input module, one end of capacitor C31, and one end of resistor R31. The other end of capacitor C31 is connected to GND. The other end of resistor R31 is connected to one end of resistor R32, one end of capacitor C32, and pin 7 of controller U32. The other ends of resistor R32 and capacitor C32 are connected to GND.

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

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

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

[0020] The beneficial effects of this utility model are:

[0021] 1. This utility model is equipped with a fast charging protocol charging module, which directly connects to the car's Type-C interface via a Type-C charging cable to draw power. The fast charging protocol charging module adjusts the input voltage of the Type-C charging cable and supplies power to the car refrigerator power supply module, thus realizing the function of USB Type-C power supply for the car refrigerator.

[0022] 2. This utility model can install a fast charging protocol module inside a car refrigerator and connect it to the car refrigerator power supply module to form a built-in USB Type-C powered car refrigerator, enabling direct use of Type-C fast charging power. In the built-in USB Type-C powered car refrigerator, the fast charging protocol module can be installed on the control circuit board of the car refrigerator, or it can be installed as an independent circuit board connected to the control circuit board of the car refrigerator inside the car refrigerator. Alternatively, the fast charging protocol module can be installed in an external independent converter and then connected to the car refrigerator power supply module through the converter connection cable to form an external USB Type-C powered car refrigerator, enabling ordinary car refrigerators to use the Type-C interface for power supply.

[0023] 3. This utility model also includes a power source, which can be an adapter. The adapter contains a fast-charging power module, which draws AC power from the socket and converts the AC power to DC power through the fast-charging power module. It then establishes a protocol connection with the fast-charging protocol charging module to supply power and outputs power through the Type-C interface of the power source. Alternatively, the power source can be a cigarette lighter adapter, which draws power from the car's cigarette lighter socket. After the voltage is converted by the voltage conversion module, it establishes a protocol connection with the fast-charging protocol charging module to supply power and outputs power through the Type-C interface of the power source. This makes the car refrigerator easy to carry and allows for on-demand power supply.

[0024] 4. The fast charging protocol charging module of this utility model is compatible with USB PD, QC and AFC protocols, and can draw power from adapters that support USB PD, QC and AFC protocols, and supply power to car refrigerators, thus having a wide range of applications. [Image Description]

[0025] Figure 1 This is a schematic diagram of the structure of the built-in TYPE-C powered vehicle refrigerator of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the externally powered Type-C vehicle refrigerator of this utility model;

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

[0028] Figure 4 This is a schematic diagram of the adapter structure;

[0029] Figure 5 This is a schematic diagram of a cigarette lighter adapter.

[0030] Figure 6 This is a schematic diagram illustrating the principle of directly connecting to the automotive Type-C interface for power supply according to this utility model;

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

[0032] Figure 8 This is a schematic diagram illustrating the principle of this utility model for drawing power from a car cigarette lighter socket via a cigarette lighter adapter.

[0033] Figure 9 This is a circuit diagram of the fast charging protocol charging module of this utility model;

[0034] Figure 10 This is the circuit diagram of the fast charging power supply module of this utility model;

[0035] Figure 11 This is a schematic diagram of the Type-C charging cable of this utility model. [Detailed Implementation]

[0036] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0038] like Figure 1 and Figure 3 As shown, a car refrigerator powered by USB Type-C includes a Type-C charging cable 1 for power supply and a car refrigerator body 2. The Type-C charging cable 1 has Type-C connectors 11 at both ends. The car refrigerator body 2 contains a car refrigerator power supply module. 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 regulating 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 a car, one of the Type-C connectors 11 of the Type-C charging cable 1 is directly plugged into a USB Type-C power supply module. Figure 3The Type-C power supply interface of the car is shown, and the Type-C connector 11 of the other charging cable 1 is connected to the fast charging protocol charging module 3. When power is supplied, the fast charging protocol charging module 3 establishes a protocol connection with the car refrigerator, and after adjusting the input voltage of the Type-C charging cable 1, it supplies power to the car refrigerator power supply module, realizing the function of USB Type-C power supply for the car refrigerator.

[0039] like Figure 1 As shown, the fast charging protocol module 3 is installed inside the vehicle refrigerator body 2. The output end of the fast charging protocol module 3 is connected to the input end of the vehicle refrigerator power supply module, forming a built-in USB Type-C powered vehicle refrigerator. 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 module 3. One of the Type-C charging cable Type-C connectors 11 is plugged into the vehicle refrigerator Type-C interface 21, and the other Type-C charging cable Type-C connector 11 is directly plugged into the car's Type-C power supply interface to draw power, realizing the direct use of Type-C fast charging power supply function. In this case, the fast charging protocol module 3 can be installed on the control circuit board of the vehicle refrigerator, or the fast charging protocol module 3 can be installed inside the vehicle refrigerator as an independent circuit board electrically connected to the control circuit board of the vehicle refrigerator.

[0040] like Figure 2 As shown, this invention also includes a converter 4, a fast charging protocol charging module 3 is installed inside the converter 4, the converter 4 is provided with a converter Type-C interface 41 connected to the input end of the fast charging protocol charging module 3, one of the Type-C charging cable Type-C connectors 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 charging protocol charging module 3, the other end of the converter connecting cable 42 is provided with a connecting cable connector 43, 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, the connecting cable connector 43 is plugged into the car refrigerator socket 22, forming an external USB Type-C powered car refrigerator, the other Type-C charging cable Type-C connector 11 of the Type-C charging cable 1 is plugged into the car Type-C power supply interface to draw power, realizing the function of using the TYPE-C interface to power ordinary car refrigerators. In this case, the number of conductive parts in the vehicle refrigerator socket 22 is the same as the number of conductive holes in the connecting wire connector 43, and sockets with different numbers of conductive parts and connectors with different numbers of conductive holes can be used in this case. Figure 2 One embodiment of this invention is that two conductive parts are provided inside the vehicle refrigerator connector 22, and two conductive holes are provided on the connector 43.

[0041] like Figure 4-5 As shown, it also includes a power tap for drawing power from an external source. The power tap has 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 of the power tap. In actual use, the Type-C connector 11 of the Type-C charging cable 1 can be connected to different power taps to draw power, thereby increasing the usage scenarios.

[0042] like Figure 4 As shown, the power tap is an adapter 52 that plugs into an AC power outlet. The adapter 52 contains a fast-charging power module 6 that converts AC power to DC power and establishes a protocol connection with the fast-charging module 3 for power supply. The adapter 52 has two adapter pins 53 that connect to the input terminals of the fast-charging power module 6. The Type-C interface 51 of the power tap connects to the output terminal of the fast-charging power module 6. The other Type-C connector 11 of the Type-C charging cable 1 is plugged into the Type-C interface 51 of the power tap of the adapter 52. Setting up the adapter 5 allows power to be drawn from an AC power outlet, and the fast-charging power module 6 converts AC mains power to DC power to establish a protocol connection with the fast-charging module 3 for power supply, facilitating the carrying of a car refrigerator and powering it.

[0043] like Figure 5 As shown, the power source is a cigarette lighter adapter 54 that plugs into the car's cigarette lighter socket. The cigarette lighter adapter 54 contains a voltage conversion module. The plug portion of the cigarette lighter adapter 54 has at least two conductive parts 55, each connected to the input terminal of the voltage conversion module. The Type-C interface 51 of the power source is connected to the output terminal of the voltage conversion module. The other Type-C connector 11 of the Type-C charging cable 1 is plugged into the Type-C interface 51 of the power source of the cigarette lighter adapter 54. By setting up the cigarette lighter adapter 54, power can be drawn from the car's cigarette lighter socket. After voltage conversion by the voltage conversion module, a protocol connection is established with the fast-charging protocol charging module 3 to provide power, facilitating the carrying of a car refrigerator and powering the car refrigerator.

[0044] like Figure 6-7As shown, the fast charging protocol charging module 3 includes a Type-C input module 31 that is connected to one of the Type-C connectors 11 of the Type-C charging cable 1 for power supply. The Type-C input module 31 is connected to a 5V low-voltage regulator module 32 for voltage regulation 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 that is connected to the vehicle refrigerator power supply module for outputting power and collecting the output power voltage. The 5V low-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. After the protocol output control module 33 communicates intelligently with the vehicle refrigerator, it adjusts the output power parameters according to the protocol. The power output and voltage sampling module 34 provides the vehicle refrigerator with a power supply with appropriate power, current and voltage parameters. 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 an LDR6328S controller U32. 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 to power the car refrigerator. For example, the adapter can be configured to output the required power to power the car refrigerator. The LDR6328S controller U32 is also compatible with traditional USB power adapters. In this case, the Type-C fast charging interface uses advanced communication protocol technology, such as the USB Power Delivery (USB PD) protocol. The USB PD protocol enables intelligent communication between the car refrigerator and the adapter, negotiating appropriate charging power, current, and voltage based on the characteristics and charging needs of the car refrigerator. This intelligent communication protocol ensures efficient, safe, and reliable charging.

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

[0047] like Figure 7 and Figure 10 As shown, the fast charging power module 6 includes a rectifier and filter module 61 for converting AC power to DC power and filtering it. The rectifier and filter module 61 is sequentially connected to a power switching module 62 for switching power output and an output control and protocol connection module 63 for establishing a protocol connection with the fast charging protocol module 3. The rectifier and filter module 61 is connected to the output control and protocol connection module 63 for power supply. The input terminal of the rectifier and filter module 61 serves as the input terminal of the fast charging power module 6, and the output terminal of the output control and protocol connection module 63 serves as its output. The power switching module 62 includes a DK075GCD type switching transistor U2; the output control and protocol connection module 63 includes a WT6633P type protocol establishment chip U1.

[0048] like Figure 10As shown, when power is drawn from adapter 5, the AC input is typically 85-265V AC. The input AC power is converted to DC power by rectifier BD1 in rectifier and filter module 61. After high-frequency noise is removed by subsequent filter capacitors and EMI filter circuits, it is output to power switching module 62 to ensure stable input voltage. In quasi-resonant mode, the DK075GCD switching transistor U2 in power switching module 62 controls the energy storage and release of the transformer through high-frequency switching. The quasi-resonant mode optimizes switching timing and reduces switching losses by detecting the resonant point of transformer leakage inductance and parasitic capacitance. Simultaneously, diode D1 (model DK100R05VM) is used for synchronous rectification on the secondary side, replacing the traditional Schottky diode. When the transformer secondary side releases energy, diode D1 conducts, efficiently transferring the energy to the output terminal. Synchronous rectification significantly reduces rectification losses, improving 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 a USB-C interface, identifies the fast charging protocols supported by the car refrigerator, and dynamically adjusts the output. For example, PD3.0 can support multiple voltage levels such as 5V / 3A, 9V / 3A, 15V / 3A, and 20V / 5A, with a maximum long-term output of 100W; QC3.0 can support the Qualcomm fast charging protocol, making it compatible with more Android devices. At the same time, the output terminal 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, the Type-C charging cable 1 includes the HUSB332B chip, a USB Type-C E-Marker chip developed by Hynetek, used to support the USB PD3.1 fast charging protocol, achieving a maximum power transmission of 240W 48V / 5A. Its fast charging principle is based on the USB Type-C power transmission and communication mechanism. Specifically, the chip has a built-in BMCBiphase MarkCoding communication module, which communicates bidirectionally with the power source and the device sink via the CCConfiguration Channel line to negotiate the optimal voltage and current combination.

[0050] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A vehicle-mounted refrigerator powered by USB Type-C, characterized in that: It includes a Type-C charging cable (1) for power supply and a car refrigerator body (2). The Type-C charging cable (1) has Type-C connectors (11) at both ends. The car refrigerator body (2) has a car refrigerator power supply module. 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.

2. The vehicle-mounted refrigerator using USB Type-C power supply according to claim 1, characterized in that: The fast charging protocol charging module (3) is installed inside 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). One of the Type-C connectors (11) of the Type-C charging cable (1) is plugged into the vehicle refrigerator Type-C interface (21).

3. The vehicle-mounted refrigerator using USB Type-C power supply according to claim 1, characterized in that: It also includes a converter (4), a fast charging protocol charging module (3) is set inside the converter (4), the converter (4) is provided with a converter Type-C interface (41) connected to the input end of the fast charging protocol charging module (3), one of the Type-C charging cable Type-C connectors (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 charging protocol charging module (3), the other end of the converter connecting cable (42) is provided with a connecting cable connector (43), the vehicle refrigerator body (2) is provided with a vehicle refrigerator socket (22) connected to the input end of the vehicle refrigerator power supply module, and the connecting cable connector (43) is plugged into the vehicle refrigerator socket (22).

4. The USB Type-C powered car refrigerator of any one of claims 1-3, wherein: It also includes a power tap that draws power from the outside. The power tap has a power tap Type-C interface (51), and the other charging cable Type-C connector (11) of the Type-C charging cable (1) is plugged into the power tap Type-C interface (51).

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

6. The vehicle-mounted refrigerator using USB Type-C power supply according to claim 4, characterized in that: The power-taking head is a cigarette lighter adapter (54) that is plugged into the cigarette lighter socket of a car. The cigarette lighter adapter (54) is equipped with a voltage conversion module. The plug part of the cigarette lighter adapter (54) is equipped with at least two adapter conductive parts (55) that are respectively connected to the input end of the voltage conversion module. The Type-C interface (51) of the power-taking head is connected to the output end of the voltage conversion module.

7. The USB Type-C powered in-vehicle refrigerator of claim 1, wherein: The fast charging protocol charging module (3) includes a Type-C input module (31) that is connected to one of the Type-C connectors (11) of the Type-C charging cable (1) for power supply. The Type-C input module (31) is connected to a 5V low-voltage regulator module (32) for voltage regulation 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) that is connected to the vehicle refrigerator power supply module for output power and collecting the output power voltage. The 5V low-voltage regulator module (32) is connected to the protocol output control module (33) for power supply. The input terminal of the Type-C input module (31) serves as the input terminal of the fast charging protocol charging module (3), and the output terminal of the power output and voltage sampling module (34) serves as the output terminal of the fast charging protocol charging module (3).

8. The USB Type-C powered car refrigerator of claim 5, wherein: The fast charging power module (6) includes a rectifier and filter module (61) for converting AC power to DC power and filtering it. The rectifier and filter module (61) is connected in sequence to a power switching module (62) for switching power supply and an output control and protocol connection module (63) for establishing a protocol connection with the fast charging protocol module (3). The rectifier and filter module (61) is connected to the output control and protocol connection module (63) for power supply. The input terminal of the rectifier and filter module (61) serves as the input terminal of the fast charging power module (6), and the output terminal 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 of claim 7, wherein: The Type-C input module (31) includes a Type-C connection terminal J2. Pins A1, A12, B1, and B12 of the Type-C connection terminal J2 are connected to GND ground, pins A4, A9, B4, and B9 of the Type-C connection terminal J2 are connected to the power supply VBUS, pin A5 of the Type-C connection terminal J2 is connected to GND ground through capacitor C33, and pin B5 of the Type-C connection terminal J2 is connected to GND ground through capacitor C34. The 5V low-voltage regulator module (32) includes a low-voltage regulator U33. Pin 1 of the low-voltage regulator U33 is connected to GND ground. Pin 2 of the low-voltage regulator U33 is connected to GND ground 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 (31). Pin 3 of the low-voltage regulator U33 is connected to GND ground through capacitor C36. The protocol output control module (33) includes a controller U32 of model LDR6328S. Pin 1 of controller U32 is connected to GND ground. Pin 2 of controller U32 is connected to the base of transistor Q31. The collector of transistor Q31 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module (32). The emitter of transistor Q31 is connected to one end of resistor R36, one end of resistor R34, pin A6 of the Type-C input module (31), and pin B6 of the Type-C input module (31) through resistor R33. The other end of resistor R36 is connected to GND ground. The other end of resistor R34 is connected to pin 2 of the low-voltage regulator U33 of the 5V low-voltage regulator module (32). Pin 3 of controller U32 is connected to one end of resistor R37, one end of resistor R35, and pin B6 of the Type-C input module (31) through 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 resistor R37 is connected to GND ground. The other end of resistor R35 is connected to pin 4 of controller U32. Pin 5 of controller U32 is connected to one end of transient voltage suppressor TVS2 through resistor R311. The other end of transient voltage suppressor TVS2 is connected to GND ground. Pin 6 of controller U32 is connected to one end of transient voltage suppressor TVS1 through resistor R310. The other end of transient voltage suppressor TVS1 is connected to GND ground. Pin 7 of controller U32 is connected to GND ground through capacitor C34. Pin 8 of controller U32 is connected to the negative terminal of diode D31, one end of capacitor C33, and one end of resistor R38 respectively. The positive terminal of diode D31 is connected to pin 2 of low voltage regulator U33 of 5V low voltage regulator module (32). The other end of capacitor C33 and the other end of resistor R38 are connected to GND ground respectively. The power output and voltage sampling module (34) includes a power output chip USB1. Pin 1 of the power output chip USB1 is connected to pin A4 of the Type-C connection terminal J2 of the Type-C input module (31), one end of capacitor C31, and one end of resistor R31. The other end of capacitor C31 is connected to GND ground. The other end of resistor R31 is connected to one end of resistor R32, one end of capacitor C32, and pin 7 of controller U32. The other ends of resistor R32 and capacitor C32 are connected to GND ground.

10. The USB Type-C powered in-vehicle refrigerator of claim 8, wherein: The rectifier and filter module (61) includes a rectifier BD1. One AC input terminal of the rectifier BD1 is connected to pin 4 of the transformer LF1, and the other AC input terminal of the rectifier BD1 is connected to pin 3 of the transformer LF1. Pin 1 of the transformer LF1 is 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). Pin 2 of the transformer LF1 is 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. 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 terminal of rectifier BD1 is connected to the positive terminal of electrolytic capacitor EC6, the positive terminal of electrolytic capacitor EC1, and one end of inductor L1, the other end of inductor L1 is connected to the positive terminal of electrolytic capacitor EC2 and the positive terminal of electrolytic capacitor EC3, the negative output terminal of rectifier BD1, the negative terminal of electrolytic capacitor EC6, the negative terminal of electrolytic capacitor EC1, the negative terminal of electrolytic capacitor EC2, and the negative terminal of electrolytic capacitor EC3 are connected to PGND ground; The power switching module (62) includes a DK075GCD type switching transistor U2. Pin 1 of the switching transistor U2 is connected to one end of resistor R17 and one end of resistor R21. The other end of resistor R21 and the transformer T pin F are connected to PGND ground. The other end of resistor R17 is connected to one end of resistor R16 and the transformer T pin E. The other end of resistor R16 is connected to the positive terminal of diode D5. The negative terminal of diode D5 is connected to the drain terminal of MOSFET Q2, one end of resistor R19, and one end of capacitor C9. The other end of capacitor C9 is connected to PGND ground. The gate terminal of MOSFET Q2 is connected to... The other end of resistor R19 is connected to the negative terminal of Zener diode ZD1, and the positive terminal of Zener diode ZD1 is connected to PGND. The source terminal of MOSFET Q2 is connected to pin 3 of switch U2 and one end of capacitor C10, and the other end of capacitor C10 is connected to PGND. Pin 2 of switch U2 is connected to one end of capacitor C12 and pin 3 of optocoupler U3, and the other end of capacitor C12, pin 4 of optocoupler U3, and pin 4 of switch U2 are connected to PGND. Pin 9 of switch U2 is connected to one end of resistor RS1, one end of resistor RS2, and one end of resistor RS3. The other end of resistor 1, the other end of resistor RS2, and the other end of resistor RS3 are respectively connected to PGND ground. Pin 5 of switch U2 is connected to pin 6 of switch U2, one end of resistor R9, and pin B of transformer T. The other end of resistor R9 is connected to the positive terminal of diode D2. The negative terminal 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. 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 terminal of electrolytic capacitor EC3 of rectifier filter module (61). The transformer T pin C is connected to one end of capacitor C1 and the positive terminal of diode D1 respectively. The other end of capacitor C1 is connected to the negative terminal of diode D1, the positive terminal of electrolytic capacitor EC4, the positive terminal of electrolytic capacitor EC5, one end of resistor R8, and one end of capacitor C3 respectively through resistor R1. The transformer T pin D, the negative terminal of electrolytic capacitor EC4, the negative terminal of electrolytic capacitor EC5, and the other end of capacitor C3 are connected to SGND ground respectively. The other end of resistor R8 is connected to pin 1 of optocoupler U3. The switching transistor U2 pin 8 is connected to the positive terminal of electrolytic capacitor EC3 of rectifier filter module (61) through resistor R14. The output control and protocol connection module (63) includes a protocol establishment chip U1 of model WT6633P. Pin 2 of the protocol establishment chip U1 is connected to the gate of MOSFET Q1 through resistor R10. The source of MOSFET Q1 is connected to pin 15 of the protocol establishment chip U1 and the positive terminal of electrolytic capacitor EC5 of the power switching module (62). The drain of MOSFET Q1 is connected to pin 1 of connection terminal J1. Pin 3 of the protocol establishment chip U1 is connected to one end of resistor R22, one end of capacitor C13, and one end of resistor R5. The other end of resistor R22 is connected to pin 6 of the protocol establishment chip U1 and one end of resistor R23. The other ends of capacitor C13 and resistor R23 are connected to SGND ground. The other end of 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 connection terminal J1. Pin 5 of the protocol establishment chip U1 is connected to pin 2 of connection terminal J1. Pin 7 of the protocol establishment chip U1 is connected to pin 6 of the protocol establishment chip U1 and one end of resistor R23. Connect to pin 3 of connection terminal J1. Connect pin 8 of protocol establishment chip U1 to one end of resistor R6 and one end of capacitor C8 respectively. Connect the other end of capacitor C8 to SGND ground. Connect the other end of resistor R6 to AGND ground. Connect pin 9 of protocol establishment chip U1 to SGND ground. Connect pin 10 of protocol establishment chip U1 to one end of resistor R13 through capacitor C7. Connect the other end of resistor R13 to one end of resistor R11, one end of resistor R12 and pin 14 of protocol establishment chip U1 respectively. Connect the other end of resistor R11 to pin 11 of protocol establishment chip U1 through capacitor C6. Connect the other end of resistor R12 to pin 2 of optocoupler U3 of power switching module (62). Connect pin 12 of protocol establishment chip U1 to one end of capacitor C5 through resistor R7. Connect the other end of capacitor C5 to SGND ground. Connect pin 16 of protocol establishment chip U1 and one end of resistor R2 to SGND ground respectively. Connect pin 5 of connection terminal J1 and the other end of resistor R2 to AGND ground respectively.

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