Vehicle-mounted high-power USB charging module

Abstract

The utility model provides a vehicle-mounted high-power USB charging module, a charging circuit comprises a DC boost-buck circuit and a first charging protocol control circuit, the first charging protocol control circuit is connected with the DC boost-buck circuit, and the first charging protocol control circuit controls the DC boost-buck circuit to charge a device to be charged through a first USB interface and / or a second USB interface; the second charging protocol control circuit is connected with the DC boost-buck circuit and the first charging protocol control circuit. The third charging protocol control circuit is connected with the direct-current buck-boost circuit and the first charging protocol control circuit; the first USB interface is connected with the direct-current buck-boost circuit, the first charging protocol control circuit and the second charging protocol control circuit; the second USB interface is connected with the DC boost-buck circuit, the first charging protocol control circuit and the third charging protocol control circuit. Compared with the prior art, the vehicle-mounted charger can provide diversified charging protocol support, so that the vehicle-mounted charger can better meet the charging use requirements of customers in a vehicle-mounted system.

Description

[Technical Field]

[0001] This utility model relates to the field of vehicle charging technology, and in particular to a vehicle-mounted high-power USB charging module. [Background Technology]

[0002] With the widespread use of mobile phones, tablets, and laptops, the power demand for in-vehicle charging is increasing daily. In addition to meeting the traditional PD protocol charging requirements, there is also an urgent need to meet the proprietary protocol charging needs of devices from Xiaomi, Huawei, and other manufacturers. PD stands for USB Power Delivery Specification, which is simply a fast charging technology standard introduced by the USB standardization organization.

[0003] Therefore, it is necessary to propose an improved technical solution to address the above problems. [Utility Model Content]

[0004] One of the objectives of this invention is to provide a high-power USB charging module for vehicles that supports diverse charging protocols, thereby better meeting customers' charging needs in vehicle systems.

[0005] According to one aspect of this utility model, a vehicle-mounted high-power USB charging module is provided, comprising a charging circuit, a second charging protocol control circuit, a third charging protocol control circuit, a first USB interface, and a second USB interface. The charging circuit includes a DC-DC boost / buck circuit and a first charging protocol control circuit. The DC-DC boost / buck circuit performs DC-DC conversion on the vehicle-mounted DC input power VBAT received at its input terminal VIN to obtain a first DC power supply VBUS1 provided to the first USB interface, and / or a second DC power supply VBUS2 provided to the second USB interface. The first charging protocol control circuit is connected to the DC-DC boost / buck circuit and, based on a first standard charging protocol or a first proprietary charging protocol, controls the DC-DC boost / buck circuit to charge the device to be charged via the first USB interface, and / or controls the first USB interface to charge the device to be charged via the first USB interface. A DC-DC boost / buck circuit charges the device to be charged via the second USB interface; a second charging protocol control circuit is connected to the DC-DC boost / buck circuit and the first charging protocol control circuit, and the second charging protocol control circuit controls the DC-DC boost / buck circuit to charge the device to be charged via the first USB interface based on a second proprietary charging protocol; a third charging protocol control circuit is connected to the DC-DC boost / buck circuit and the first charging protocol control circuit, and the third charging protocol control circuit controls the DC-DC boost / buck circuit to charge the device to be charged via the second USB interface based on the second proprietary charging protocol; the first USB interface is connected to the DC-DC boost / buck circuit, the first charging protocol control circuit, and the second charging protocol control circuit; the second USB interface is connected to the DC-DC boost / buck circuit, the first charging protocol control circuit, and the third charging protocol control circuit.

[0006] Compared with existing technologies, this invention not only supports standard charging protocols but also proprietary charging protocols, thus providing diversified charging protocol support and enabling the product to better meet customers' charging needs in vehicle systems. [Attached Image Description]

[0007] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0008] Figure 1 This is a circuit diagram of a vehicle-mounted high-power USB charging module in one embodiment of the present invention.

[0009] Figure 2 In one embodiment of this utility model, as shown Figure 1 The circuit diagram shown is of the input protection and filtering circuit.

[0010] Figure 3 This is a circuit diagram of the protocol control and buck-boost section of the CCG7D chip and its peripheral circuitry in one embodiment of the present invention.

[0011] Figure 4 This is a circuit diagram of the CPSQ8841 chip and its peripheral circuits in one embodiment of the present invention;

[0012] Figure 5 This is a circuit diagram of the TLIN10285DDARQ1 chip and its peripheral circuits in one embodiment of the present invention.

Detailed Implementation Methods

[0013] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Unless otherwise specified, the terms coupling, connection, linking, and interconnection used herein to indicate electrical connection mean direct or indirect connection. For example, A being connected to B includes both a direct electrical connection between A and B and a connection between A and B via electrical components or circuits.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "back", "positive", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] Please refer to Figure 1 As shown, it is a circuit diagram of a vehicle-mounted high-power USB charging module in one embodiment of the present invention. Figure 1 The vehicle-mounted high-power USB charging module shown includes a charging circuit 110, a second charging protocol control circuit 120, a third charging protocol control circuit 130, a first USB interface 140, and a second USB interface 150.

[0017] The charging circuit 110 includes a DC-DC boost circuit (i.e., a BUCK-BOOST circuit) (unlabeled) and a first charging protocol control circuit (unlabeled). The DC-DC boost circuit (unlabeled) performs DC-DC conversion on the on-board DC input power VBAT received at its input terminal VIN to obtain a first DC power supply VBUS1 provided to the first USB interface 140, and / or a second DC power supply VBUS2 provided to the second USB interface 150. The first charging protocol control circuit (unlabeled) is connected to the DC-DC boost circuit (unlabeled) and, based on a first standard charging protocol or a first proprietary charging protocol, controls the DC-DC boost circuit (unlabeled) to charge the device to be charged via the first USB interface 140, and / or controls the DC-DC boost circuit (unlabeled) to charge the device to be charged via the second USB interface 150.

[0018] The second charging protocol control circuit 120 is connected to the DC-DC step-up / step-down circuit (unlabeled) and the first charging protocol control circuit (unlabeled). The second charging protocol control circuit 120 controls the DC-DC step-up / step-down circuit (unlabeled) to charge the device to be charged through the first USB interface 140 based on the second proprietary charging protocol.

[0019] The third charging protocol control circuit 130 is connected to the DC-DC step-up / step-down circuit (unlabeled) and the first charging protocol control circuit (unlabeled). The third charging protocol control circuit 130 controls the DC-DC step-up / step-down circuit (unlabeled) to charge the device to be charged through the second USB interface 150 based on the second proprietary charging protocol.

[0020] The first USB interface 140 is connected to the DC-DC step-up / step-down circuit (unlabeled), the first charging protocol control circuit (unlabeled), and the second charging protocol control circuit 120; the second USB interface 150 is connected to the DC-DC step-up / step-down circuit (unlabeled), the first charging protocol control circuit (unlabeled), and the third charging protocol control circuit 130.

[0021] exist Figure 1 In the specific embodiment shown, the charging circuit 110 includes a CCG7D chip, a DC-DC buck-boost circuit (unlabeled), and a first charging protocol control circuit (unlabeled) integrated into the CCG7D chip. The CCG7D chip supports the PD protocol (which can be referred to as the first standard charging protocol) and Xiaomi's proprietary charging protocol (which can be referred to as the first proprietary charging protocol). The CCG7D chip is connected to corresponding pins of the first USB interface 140 and the second USB interface 150. Please refer to... Figure 3The diagram shows a schematic of the protocol control and buck-boost section of the CCG7D chip and its peripheral circuitry in one embodiment of this invention. The second charging protocol control circuit 120 includes a CPSQ8841_1 chip (a charging protocol control chip), which supports Huawei's proprietary charging protocol and is connected to the corresponding pin of the first USB interface 140. The third charging protocol control circuit 130 includes a CPSQ8841_2 chip (a charging protocol control chip), which supports Huawei's proprietary charging protocol and is connected to the corresponding pin of the second USB interface 150. For details, please refer to [link to relevant documentation]. Figure 4 As shown, it is a circuit diagram of the CPSQ8841 chip and its peripheral circuit in one embodiment of the present invention; the CPSQ8841_1 chip is connected to the CCG7D chip via the I2C bus; the CPSQ8841_2 chip is connected to the CCG7D chip via the I2C bus.

[0022] exist Figure 1 In the specific embodiment shown, the CC1_1, CC2_1, and VBUS1 pins of the first USB interface 140 are respectively connected to the corresponding pins of the CCG7D chip; the D+1 and D-1 pins of the first USB interface 140 are respectively connected to the corresponding pins of the CPSQ8841_1 chip; the CC1_2, CC2_2, and VBUS2 pins of the second USB interface 150 are respectively connected to the corresponding pins of the CCG7D chip; the D+2 and D-2 pins of the second USB interface 150 are respectively connected to the corresponding pins of the CPSQ8841_2 chip; the first standard charging protocol supported by the CCG7D chip is the PD protocol, and the first proprietary charging protocol supported is the Xiaomi proprietary charging protocol; the second standard charging protocol supported by the CPSQ8841_1 chip is the DCP protocol, and the second proprietary charging protocol supported is the Huawei proprietary charging protocol; the second standard charging protocol supported by the CPSQ8841_2 chip is the DCP protocol, and the second proprietary charging protocol supported is the Huawei proprietary charging protocol; both the first USB interface 140 and the second USB interface 150 are USB... Type-C interface.

[0023] In other words, the PD protocol and Xiaomi's proprietary charging protocol utilize the Infineon CCG7D chip. When a device is connected to the first USB port 140 and / or the second USB port 150, communication is first established via the CC signal. If the device requires (or supports) the PD protocol or Xiaomi's proprietary charging protocol, the CCG7D chip will communicate with the device. For devices requiring the PD protocol, the maximum charging power is 100W with a single port and 200W with both ports simultaneously connected. The device requests which PDO (Purpose Power DO) or APDO (Programmable Power DO) to use based on its charging needs. For devices requiring Xiaomi's proprietary charging protocol, the maximum charging power is 67W with a single port. In addition to supporting both the PD protocol and Xiaomi's proprietary charging protocol, the CCG7D chip also integrates a Buck-Boost controller (DC-Buck-Boost circuit), which controls the output voltage and current based on the power request from the device.

[0024] In other words, the Huawei proprietary charging protocol control section uses CPS's CPSQ8841 chip. The data differential signals D+ and D- connect to the Type-C connector (e.g., the first USB port 140 and the second USB port 150), supporting both the BC1.2 protocol (e.g., the DCP protocol) and the Huawei proprietary charging protocol. After the CCG7D chip receives the request from the device being charged to use the Huawei proprietary protocol via the CC signal, it transfers protocol control to the CPSQ8841 chip. The CPSQ8841 chip then receives the charging demand from the device waiting to be charged via the data differential signals D+ and D-. Finally, the CPSQ8841 chip controls the Buck-Boost converter (i.e., DC-DC buck-boost circuit) on the CCG7D chip via I2C communication to output the corresponding power. A single port can support a maximum charging power of 88W using the Huawei proprietary protocol.

[0025] The following is a detailed introduction Figure 1 The working principle of the in-vehicle high-power USB charging module shown is illustrated.

[0026] When the first charging protocol control circuit (unlabeled) in the CCG7D chip detects that a device to be charged is connected to the first USB interface 140, it continues to detect whether the device to be charged supports a first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol) and a second proprietary charging protocol (e.g., Huawei proprietary charging protocol). If it supports the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol), the first charging protocol control circuit (unlabeled) in the CCG7D chip controls the DC-DC buck-boost circuit (unlabeled) in the CCG7D chip to charge the device to be charged through the first USB interface 140 based on the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol). If it supports the second proprietary charging protocol (e.g., Huawei proprietary charging protocol), the first charging protocol control circuit (unlabeled) in the CCG7D chip controls the DC-DC buck-boost circuit (unlabeled) in the CCG7D chip to charge the device to be charged through the first USB interface 140. The circuit delegates protocol control to the second charging protocol control circuit 120 (e.g., CPSQ8841_1 chip). The second charging protocol control circuit 120 (e.g., CPSQ8841_1 chip) controls the DC-DC boost / buck circuit (unidentified) in the CCG7D chip to charge the device to be charged via the first USB interface 140 based on the second proprietary charging protocol (e.g., Huawei proprietary charging protocol). If neither the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol) nor the second proprietary charging protocol (e.g., Huawei proprietary charging protocol) is supported, the first charging protocol control circuit (unidentified) controls the DC-DC boost / buck circuit (unidentified) in the CCG7D chip to charge the device to be charged via the first USB interface 140 based on the first standard charging protocol (e.g., PD protocol).

[0027] When the first charging protocol control circuit (unlabeled) in the CCG7D chip detects a device to be charged connected to the second USB interface 150, it continues to detect whether the device supports a first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol) and a second proprietary charging protocol (e.g., Huawei proprietary charging protocol). If it supports the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol), the first charging protocol control circuit (unlabeled) in the CCG7D chip controls the DC-DC buck-boost circuit (unlabeled) in the CCG7D chip to charge the device via the second USB interface 150 based on the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol). If it supports the second proprietary charging protocol (e.g., Huawei proprietary charging protocol), the first charging protocol control circuit (unlabeled) in the CCG7D chip controls the DC-DC buck-boost circuit (unlabeled) in the CCG7D chip to charge the device via the second USB interface 150. The circuit delegates protocol control to a third charging protocol control circuit 130 (e.g., CPSQ8841_2 chip). The third charging protocol control circuit 130 (e.g., CPSQ8841_2 chip) controls the DC-DC boost / buck circuit (unidentified) in the CCG7D chip to charge the device to be charged via the second USB interface 150 based on a second proprietary charging protocol (e.g., Huawei proprietary charging protocol). If neither the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol) nor the second proprietary charging protocol (e.g., Huawei proprietary charging protocol) is supported, the first charging protocol control circuit (unidentified) controls the DC-DC boost / buck circuit (unidentified) in the CCG7D chip to charge the device to be charged via the second USB interface 150 based on a first standard charging protocol (e.g., PD protocol).

[0028] exist Figure 1 In the specific embodiment shown, when only the first USB port 140 is connected to the device to be charged, and the device to be charged supports the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol), the first USB port 140 provides a maximum charging power of 67W to the device to be charged; when only the second USB port 150 is connected to the device to be charged, and the device to be charged supports the first proprietary charging protocol (e.g., Xiaomi proprietary charging protocol), the second USB port 150 provides a maximum charging power of 67W to the device to be charged.

[0029] When only the first USB port 140 is connected to the device to be charged, and the device to be charged supports the second proprietary charging protocol (e.g., Huawei proprietary charging protocol), the first USB port 140 provides the device to be charged with a maximum charging power of 88W; when only the second USB port 150 is connected to the device to be charged, and the device to be charged supports the second proprietary charging protocol (e.g., Huawei proprietary charging protocol), the second USB port 150 provides the device to be charged with a maximum charging power of 88W.

[0030] When only the first USB port 140 is connected to a device to be charged, and the device to be charged supports the first standard charging protocol (e.g., PD protocol), the first USB port 140 provides a maximum charging power of 100W to the device to be charged. When only the second USB port 150 is connected to a device to be charged, and the device to be charged supports the first standard charging protocol (e.g., PD protocol), the second USB port 150 provides a maximum charging power of 100W to the device to be charged. When both the first USB port 140 and the second USB port 150 are connected to devices to be charged, and both devices to be charged support the first standard charging protocol (e.g., PD protocol), the first USB port 140 and the second USB port 150 provide a combined maximum charging power of 200W to the devices to be charged.

[0031] exist Figure 1 In the embodiment shown, the vehicle-mounted high-power USB charging module also includes an input protection and filtering circuit 160. The input terminal of the input protection and filtering circuit 160 receives the vehicle-mounted DC input power supply VBAT, and its output terminal is connected to the input terminal VIN of the DC boost / buck circuit (not labeled). The input protection and filtering circuit 160 is used for reverse connection protection, surge protection, and filtering of the vehicle-mounted DC input power supply VBAT.

[0032] Please refer to Figure 2 As shown, this is one embodiment of the present invention. Figure 1 The circuit diagram shown is for the input protection and filtering circuit. Figure 2 The input protection and filtering circuit shown includes an input reverse protection unit 162, a filtering unit 164, an energy storage unit 166, and a voltage regulation and filtering unit 168.

[0033] The input reverse protection unit 162 includes a PMOS transistor Q101, a PMOS transistor Q104, a Zener diode D118, a resistor R117, and a capacitor C132. The source of PMOS transistor Q101 is connected to the vehicle DC input power supply VBAT, its gate is connected to connection node TP119, and its drain is connected to connection node TP102. The source of PMOS transistor Q104 is connected to the vehicle DC input power supply VBAT, its gate is connected to connection node TP119, and its drain is connected to connection node TP102. One end of resistor R117 is connected to connection node TP119, and the other end is grounded. One end of capacitor C132 is connected to connection node TP119, and the other end is grounded. The cathode of Zener diode D118 is connected to connection node TP102, and its anode is connected to connection node TP119.

[0034] The filter unit 164 includes capacitors C103, C104, C105, and C106, and inductor L101. Capacitor C103 is connected between connection node TP102 and ground; capacitor C104 is connected between connection node TP102 and ground; inductor L101 is connected between connection node TP102 and connection node TP103; capacitor C105 is connected between connection node TP103 and ground; capacitor C106 is connected between connection node TP103 and ground; connection node TP102 is connected to the input terminal VIN of the DC-DC step-up / step-down circuit (unlabeled).

[0035] The energy storage unit 166 includes capacitor C115 and capacitor C116, wherein capacitor C115 is connected between connection node TP103 and ground terminal; capacitor C116 is connected between connection node TP103 and ground terminal.

[0036] The voltage regulation and filtering unit 168 includes a bidirectional Zener diode D102 and a capacitor C102. The bidirectional Zener diode D102 is connected between the vehicle DC input power supply VBAT and the ground terminal; the capacitor C102 is connected between the vehicle DC input power supply VBAT and the ground terminal.

[0037] In other words, in Figure 2 In the input protection and filtering circuit shown, TCS's SMAJ30CAHM2G is used for surge protection, and PMOS transistors are used for reverse protection. Due to the large input current, to reduce power loss caused by the internal resistance of the PMOS transistors, two PMOS transistors are connected in parallel. C103, C104, L101, C105, and C106 together form a π-type filter circuit (i.e., filter unit 164). The two electrolytic capacitors C115 and C116 form the energy storage circuit (or energy storage unit 166) for the input power supply.

[0038] exist Figure 1 In the illustrated embodiment, the in-vehicle high-power USB charging module further includes a communication converter 170, a connector 180, and a vehicle control unit (not shown). The vehicle control unit (not shown) is communicatively connected to the communication converter 170 via the connector 180. The communication converter 170 is communicatively connected to the CCG7D chip, and transmits communication data from the CCG7D chip to the vehicle control unit (not shown) via the connector 180. The communication data sent by the CCG7D chip to the vehicle control unit (not shown) includes the temperature, charging status, overvoltage status, and overcurrent status of the USB high-power charging module.

[0039] exist Figure 1In the specific embodiment shown, connector 180 and communication converter 170 are connected via LIN_BUS communication; the communication data sent by CCG7D chip to communication converter 170 is LIN data; communication converter 170 uses TI's TLIN10285DDARQ1 chip as the LIN communication converter, please refer to [link to details]. Figure 5 As shown, it is a circuit diagram of the TLIN10285DDARQ1 chip and its peripheral circuits in one embodiment of the present invention.

[0040] In other words, TI's TLIN10285DDARQ1 chip is used as the LIN communication converter 170 to transmit the LIN communication data on the CCG7D chip to the vehicle control unit (not shown). The vehicle control unit (not shown) obtains information such as the temperature, charging status, and whether there is overvoltage or overcurrent from the USB high-power charging module through LIN communication.

[0041] exist Figure 1 In the specific embodiment shown, the power supply pin KL30 of connector 180 is used to provide the vehicle DC input power VBAT; the enable pin Wake_Up of connector 180 is used to provide a wake-up signal to the input protection and filtering circuit 160 to wake up the input protection and filtering circuit 160 and start working; the ground pin KL31 of connector 180 is used for grounding.

[0042] In summary, the in-vehicle high-power USB charging module provided by this utility model is based on Infineon's chip, using the highly integrated CCG7D chip to complete the establishment, communication, and execution of the PD protocol. When the detected charging device requires PD protocol or Xiaomi's proprietary charging protocol, the device communicates directly with the CCG7D chip via CC signals; if the detected device requires Huawei's proprietary charging protocol, the communication task is switched to the CPSQ8841 chip, and communication with the device is completed via D+ and D- signals to complete the proprietary protocol communication. In addition, this utility model also supports LIN communication to transmit diagnostic information to the vehicle's infotainment system. This utility model uses Infineon's CCG7D chip to achieve 100W charging with a single-port PD protocol and 200W charging with dual ports, while each Type-C port can support a maximum of 67W fast charging with Xiaomi's proprietary charging protocol. This utility model uses CPS's CPSQ8841 chip to support a maximum of 88W fast charging with Huawei's proprietary charging protocol. The mutual communication and cooperation between the two PD chips achieves diversified charging protocols, meeting various needs of in-vehicle charging.

[0043] The following analysis highlights the innovative features of the in-vehicle high-power USB charging module provided by this utility model:

[0044] 1. The USBPD technology solution for 200W power output based on CCG7D chip and CPSQ8841 chip studied in this utility model separates the PD protocol, Xiaomi proprietary protocol and Huawei proprietary protocol from the physical circuit, avoiding the risks caused by the splitting of data signals D+ and D-.

[0045] 2. The CPS8841Q chip only supports Huawei's proprietary protocol and the PD protocol. If simultaneous support for Huawei, Xiaomi, and PD proprietary protocols is required, a CPS8841 chip and another PD protocol chip are typically used; the CPS8841Q chip is only designed for Huawei's proprietary protocol. Currently, solutions supporting Huawei's proprietary protocol are difficult to pass USB-IF DCP certification. The innovation of this invention lies in the fact that the CPS8841Q chip supports both the Huawei protocol and the DCP protocol, thus enabling USB-IF certification.

[0046] 2. The PD protocol and Xiaomi's proprietary protocol, which require CC signal support, are implemented on the CCG7D chip, while the traditional BC1.2 protocol (e.g., DCP protocol) and Huawei's proprietary protocol, which require D+ and D- data communication signals, are implemented on the CPSQ8841. All power output sections utilize the CCG7D chip's buck-boost section, efficiently leveraging inter-chip communication capabilities and improving the product's cost-effectiveness. Diverse charging protocol support allows the product to better meet customers' charging needs in automotive systems.

[0047] It should be noted that any modifications made by those skilled in the art to the specific embodiments of this utility model do not depart from the scope of the claims of this utility model. Accordingly, the scope of the claims of this utility model is not limited to the foregoing specific embodiments.

Claims

1. A vehicle-mounted high-power USB charging module, characterized in that, It includes a charging circuit, a second charging protocol control circuit, a third charging protocol control circuit, a first USB interface, and a second USB interface. The charging circuit includes a DC-DC boost / buck circuit and a first charging protocol control circuit. The DC-DC boost / buck circuit is used to perform DC-DC conversion on the on-board DC input power VBAT received at its input terminal VIN to obtain a first DC power supply VBUS1 provided to the first USB interface, and / or obtain a second DC power supply VBUS2 provided to the second USB interface. The first charging protocol control circuit is connected to the DC-DC boost / buck circuit and, based on a first standard charging protocol or a first proprietary charging protocol, controls the DC-DC boost / buck circuit to charge the device to be charged through the first USB interface, and / or controls the DC-DC boost / buck circuit to charge the device to be charged through the second USB interface. The second charging protocol control circuit is connected to the DC-DC step-up / step-down circuit and the first charging protocol control circuit. The second charging protocol control circuit controls the DC-DC step-up / step-down circuit to charge the device to be charged through the first USB interface based on the second proprietary charging protocol. The third charging protocol control circuit is connected to the DC-DC step-up / step-down circuit and the first charging protocol control circuit. The third charging protocol control circuit controls the DC-DC step-up / step-down circuit to charge the device to be charged through the second USB interface based on the second proprietary charging protocol. The first USB interface is connected to the DC buck-boost circuit, the first charging protocol control circuit, and the second charging protocol control circuit. The second USB interface is connected to the DC boost / buck circuit, the first charging protocol control circuit, and the third charging protocol control circuit.

2. The vehicle-mounted high-power USB charging module according to claim 1, characterized in that, When the first charging protocol control circuit detects that a device to be charged is connected to the first USB interface, it continues to detect whether the device to be charged supports the first proprietary charging protocol and the second proprietary charging protocol. If the first proprietary charging protocol is supported, the first charging protocol control circuit controls the DC-DC boost / buck circuit to charge the device to be charged through the first USB interface based on the first proprietary charging protocol. If the second proprietary charging protocol is supported, the first charging protocol control circuit transfers protocol control to the second charging protocol control circuit, which then controls the DC-DC boost / buck circuit to charge the device to be charged through the first USB interface based on the second proprietary charging protocol. If neither the first proprietary charging protocol nor the second proprietary charging protocol is supported, the first charging protocol control circuit controls the DC-DC boost / buck circuit to charge the device to be charged through the first USB interface based on the first standard charging protocol. When the first charging protocol control circuit detects that a device to be charged is connected to the second USB interface, it continues to detect whether the device to be charged supports the first private charging protocol and the second private charging protocol. If the first private charging protocol is supported, the first charging protocol control circuit controls the DC-DC boost / buck circuit to charge the device to be charged through the second USB interface based on the first private charging protocol. If the second private charging protocol is supported, the first charging protocol control circuit transfers protocol control to the third charging protocol control circuit, which then controls the DC-DC boost / buck circuit to charge the device to be charged through the second USB interface based on the second private charging protocol. If neither the first private charging protocol nor the second private charging protocol is supported, the first charging protocol control circuit controls the DC-DC boost / buck circuit to charge the device to be charged through the second USB interface based on the first standard charging protocol.

3. The in-vehicle high-power USB charging module according to claim 2, characterized in that, When only the first USB port is connected to the device to be charged, and the device to be charged supports the first proprietary charging protocol, the first USB port provides a maximum charging power of 67W to the device to be charged; when only the second USB port is connected to the device to be charged, and the device to be charged supports the first proprietary charging protocol, the second USB port provides a maximum charging power of 67W to the device to be charged. When only the first USB port is connected to the device to be charged, and the device to be charged supports the second proprietary charging protocol, the first USB port provides a maximum charging power of 88W to the device to be charged; when only the second USB port is connected to the device to be charged, and the device to be charged supports the second proprietary charging protocol, the second USB port provides a maximum charging power of 88W to the device to be charged. When only the first USB port is connected to the device to be charged, and the device to be charged supports the first standard charging protocol, the first USB port provides a maximum charging power of 100W to the device to be charged; when only the second USB port is connected to the device to be charged, and the device to be charged supports the first standard charging protocol, the second USB port provides a maximum charging power of 100W to the device to be charged; when both the first USB port and the second USB port are connected to the device to be charged, and the devices to be charged support the first standard charging protocol, the first USB port and the second USB port provide a combined maximum charging power of 200W to the device to be charged.

4. The vehicle-mounted high-power USB charging module according to claim 1, characterized in that, The charging circuit includes a CCG7D chip, the DC-DC step-up / step-down circuit and the first charging protocol control circuit are integrated into the CCG7D chip, and the CCG7D chip is connected to the corresponding pins of the first USB interface and the second USB interface. The second charging protocol control circuit includes a CPSQ8841_1 chip, which is connected to the corresponding pin of the first USB interface; The third charging protocol control circuit includes a CPSQ8841_2 chip, which is connected to the corresponding pin of the second USB interface. The CPSQ8841_1 chip communicates with the CCG7D chip via an I2C bus, and the CPSQ8841_2 chip communicates with the CCG7D chip via an I2C bus.

5. The vehicle-mounted high-power USB charging module according to claim 4, characterized in that, The CC1_1 pin, CC2_1 pin, and VBUS1 pin of the first USB interface are respectively connected to the corresponding pins of the CCG7D chip; the D+1 pin and D-1 pin of the first USB interface are respectively connected to the corresponding pins of the CPSQ8841_1 chip. The CC1_2, CC2_2, and VBUS2 pins of the second USB interface are respectively connected to the corresponding pins of the CCG7D chip; the D+2 and D-2 pins of the second USB interface are respectively connected to the corresponding pins of the CPSQ8841_2 chip.

6. The vehicle-mounted high-power USB charging module according to claim 4, characterized in that, The first standard charging protocol supported by the CCG7D chip is the PD protocol, and the first proprietary charging protocol supported is the Xiaomi proprietary charging protocol. The second standard charging protocol supported by the CPSQ8841_1 chip is the DCP protocol, and the second proprietary charging protocol supported is the Huawei proprietary charging protocol. The second standard charging protocol supported by the CPSQ8841_2 chip is the DCP protocol, and the second proprietary charging protocol supported is the Huawei proprietary charging protocol. Both the first USB interface and the second USB interface are USB Type-C interfaces.

7. The in-vehicle high-power USB charging module according to any one of claims 1-6, characterized in that, It also includes input protection and filtering circuits. The input terminal of the input protection and filtering circuit receives the vehicle-mounted DC input power supply VBAT, and its output terminal is connected to the input terminal VIN of the DC step-up / step-down circuit.

8. The vehicle-mounted high-power USB charging module according to claim 7, characterized in that, The input protection and filtering circuit includes an input reverse protection unit, a filtering unit, and an energy storage unit. The input reverse protection unit includes a PMOS transistor Q101, a PMOS transistor Q104, a Zener diode D118, a resistor R117, and a capacitor C132. The source of the PMOS transistor Q101 is connected to the vehicle DC input power supply VBAT, its gate is connected to the connection node TP119, and its drain is connected to the connection node TP102. The source of the PMOS transistor Q104 is connected to the vehicle DC input power supply VBAT, its gate is connected to the connection node TP119, and its drain is connected to the connection node TP102. One end of the resistor R117 is connected to the connection node TP119, and the other end is grounded. One end of the capacitor C132 is connected to the connection node TP119, and the other end is grounded. The cathode of the Zener diode D118 is connected to the connection node TP102, and its anode is connected to the connection node TP119. The filtering unit includes capacitors C103, C104, C105, and C106, and inductor L101. Capacitor C103 is connected between connection node TP102 and the ground terminal; capacitor C104 is connected between connection node TP102 and the ground terminal; inductor L101 is connected between connection node TP102 and connection node TP103; capacitor C105 is connected between connection node TP103 and the ground terminal; capacitor C106 is connected between connection node TP103 and the ground terminal; connection node TP102 is connected to the input terminal VIN of the DC-DC step-up / step-down circuit. The energy storage unit includes C115 and capacitor C116. The capacitor C115 is connected between the connection node TP103 and the ground terminal; the capacitor C116 is connected between the connection node TP103 and the ground terminal.

9. The vehicle-mounted high-power USB charging module according to claim 8, characterized in that, The input protection and filtering circuit also includes a voltage stabilizing and filtering unit. The voltage stabilizing and filtering unit includes a bidirectional Zener diode D102 and a capacitor C102. The bidirectional Zener diode D102 is connected between the vehicle DC input power supply VBAT and the ground terminal; The capacitor C102 is connected between the vehicle-mounted DC input power supply VBAT and the ground terminal.

10. The vehicle-mounted high-power USB charging module according to claim 4, characterized in that, Vehicle control unit, connectors and communication converters, The vehicle control unit is communicatively connected to the communication converter via the connector; The communication converter is communicatively connected to the CCG7D chip, and the communication converter transmits the communication data on the CCG7D chip to the vehicle control unit via the connector; The communication data sent by the CCG7D chip to the vehicle control unit includes the temperature, charging status, overvoltage status, and overcurrent status of the USB high-power charging module.

11. The vehicle-mounted high-power USB charging module according to claim 10, characterized in that, The connector is connected to the communication converter via LIN_BUS communication. The communication data sent by the CCG7D chip to the communication converter is LIN data; The communication converter includes a TLIN10285DDARQ1 chip.

12. The vehicle-mounted high-power USB charging module according to claim 11, characterized in that, The power pins of the connector are used to provide the vehicle-mounted DC input power VBAT; The enable pin of the connector is used to provide a wake-up signal to the input protection and filtering circuit to wake up the input protection and filtering circuit and start working.

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