High-power vehicle-mounted double-port charging device

Abstract

The invention provides a high-power vehicle-mounted double-port charging device. The high-power vehicle-mounted double-port charging device comprises a power interface connector, a power input protection and filtering module, a buck-boost controller, a charging protocol controller and an output switch controller, the charging protocol controller comprises a main charging protocol control module and an auxiliary charging protocol control module, the main charging protocol control module is provided with a public protocol and a private protocol, and the auxiliary charging protocol control module is provided with a private protocol; the power interface connector provides power for an interface of equipment to be charged, the power input protection and filtering module and the output switch controller protect a circuit in the power transmission process, and the buck-boost controller and the charging protocol controller respectively provide power voltage and a charging protocol required by the equipment to be charged. The problem that the charging rate of mobile phones of some brands cannot be improved due to the fact that an existing vehicle-mounted charging scheme does not support collection of special private charging protocols is solved, and the compatibility capacity and the intelligent recognition capacity of a vehicle-mounted charger for various private protocols are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted charging equipment, and more specifically, to a high-power vehicle-mounted dual-port charging device. Background Art

[0002] With the rapid development of automotive electronic technology and the growing demand of consumers, car USB chargers, as an important component to improve driving convenience, have gradually become standard equipment in modern cars. Early car USB chargers mainly met the charging needs of passengers for low-power electronic devices such as mobile phones. The output power was generally low, usually not exceeding 15W. However, with the improvement of the performance of mobile devices and the increase in battery capacity, users' requirements for charging speed and charging power are also increasing. In recent years, mainstream car USB chargers on the market have begun to support public charging protocols, such as the Power Delivery (PD) protocol, and their charging power has gradually increased from 27W to 60W or even 100W to meet the charging needs of high-power devices such as laptops. At present, most of the car USB chargers on the market only support public charging protocols, and have poor compatibility with private protocols, resulting in some mobile phones not being able to obtain the best charging experience in the car environment. Therefore, how to increase the support for private charging protocols while increasing the charging power of car USB chargers has become an important direction for the current upgrade of car charger technology.

[0003] The technical upgrade of in-vehicle USB chargers faces many challenges. On the one hand, as the charging power increases, how to ensure the stability and safety of the in-vehicle circuit has become an urgent problem to be solved. On the other hand, since different mobile phone brands have different support for private charging protocols, how to achieve compatibility and intelligent identification of multiple private protocols in the in-vehicle charger is also a difficulty in the current technical upgrade.

[0004] However, the upgrade of car USB charger technology has also brought huge market opportunities. With the popularization of new energy vehicles and the improvement of the level of intelligence, the complexity and integration of vehicle electronic systems have continued to increase, providing more application scenarios and upgrade space for car USB chargers. At the same time, consumers' pursuit of driving convenience and charging efficiency has also prompted car charger technology to continue to develop in the direction of higher power, smarter and more compatible. Therefore, through technological innovation and industrial upgrading, car USB chargers are expected to play a more important role in improving user experience and promoting the development of automotive intelligence. Summary of the invention

[0005] The present invention provides a high-power vehicle-mounted dual-port charging device, which aims to solve the problem that the existing vehicle-mounted charging solution does not support the collection of dedicated private charging protocols, so that the charging rate of some brand mobile phones cannot be improved, and improves the compatibility and intelligent recognition capabilities of the vehicle-mounted charger for multiple private protocols.

[0006] To achieve the above object, the present invention provides a high-power vehicle-mounted dual-port charging device, comprising:

[0007] A power interface connector, the power interface connector comprising a power input module, the power input module providing power input to the interface of the device to be charged;

[0008] A power input protection and filtering module, which includes a power input protection unit and a power filtering unit, and is connected to the circuit of the high-power vehicle-mounted dual-port charging device;

[0009] A buck-boost controller, which performs a step-up or step-down conversion on an input power supply voltage;

[0010] A charging protocol controller, the charging protocol controller includes a main charging protocol control module, a secondary charging protocol control module and an identification module, the main charging protocol control module is provided with a public protocol and a private protocol, the secondary charging protocol control module is provided with a private protocol, the identification module identifies the device to be charged, the main charging protocol control module and the secondary charging protocol control module are communicatively connected to hand over the charging protocol control authority and provide charging protocols for various types of devices;

[0011] An output switch controller, the output switch controller controls the output of the buck-boost controller and the output of the interface of the device to be charged;

[0012] Among them, the power interface connector provides power for the interface of the device to be charged, the power input protection and filtering module and the output switch controller protect the circuit during the power transmission process, and the buck-boost controller and the charging protocol controller respectively provide the power supply voltage and charging protocol required by the device to be charged.

[0013] In one embodiment, the output switch controller is provided with a circuit closing module and a circuit conducting module;

[0014] When no device to be charged is connected, the circuit closing module cuts off the output of the buck-boost controller and the output of the interface of the device to be charged;

[0015] When a device to be charged is connected, the circuit conduction module provides the output of the buck-boost controller to the interface of the device to be charged.

[0016] In one embodiment, the interface of the device to be charged includes a first Type-C interface and a second Type-C interface.

[0017] In one embodiment, the power input protection and filtering module includes a TVS tube circuit, a P-MOS tube circuit and an LCπ-type filtering circuit;

[0018] The TVS tube circuit realizes power input surge protection, the P-MOS tube circuit realizes reverse connection protection, and the LC π-type filter circuit reduces external electromagnetic interference emission.

[0019] In one embodiment, the buck-boost controller includes a first buck-boost control circuit and a second buck-boost control circuit;

[0020] The first buck-boost control circuit and the second buck-boost control circuit both include an external N-MOS tube, an internal N-MOS tube and a power inductor;

[0021] The external N-MOS tube, the internal N-MOS tube and the power inductor constitute a Buck-Boost step-up / step-down power conversion topology circuit;

[0022] The external N-MOS tube includes a first arm bridge upper tube and a second arm bridge lower tube, and the internal N-MOS tube includes a first arm bridge lower tube and a second arm bridge upper tube.

[0023] In one embodiment, the main charging protocol control module includes a first main charging protocol control circuit and a second main charging protocol control circuit, and the auxiliary charging protocol control module includes a first auxiliary charging protocol control circuit and a second auxiliary charging protocol control circuit;

[0024] The first buck-boost control circuit is connected to the first main charging protocol control circuit and the first auxiliary charging protocol control circuit;

[0025] The second buck-boost control circuit is connected to the second main charging protocol control circuit and the second sub-charging protocol control circuit.

[0026] In one embodiment, the first main charging protocol control circuit and the second main charging protocol control circuit both include CC1 and CC2 signals, D+ and D- signals, GATE signals, I2C, FB signals, and Uart signals;

[0027] The CC1 and CC2 signals and the D+ and D- signals are connected to the pins of the interface of the device to be charged;

[0028] The GATE signal is connected to the output switch controller.

[0029] In one embodiment, the main charging protocol control module is connected to the pins of the interface of the device to be charged through CC1 and CC2 signals to identify whether there is a device to be charged connected to the interface and provide communication between the PD charging protocol and the first private charging protocol;

[0030] The main charging protocol control module is connected to the pins of the Type-C interface through D+ and D- signals to provide communication between the traditional low-power BC1.2 charging protocol and the second private charging protocol;

[0031] The main charging protocol control module controls the output switch circuit through the GATE signal to turn on the power output after the device to be charged is connected;

[0032] The main charging protocol control module is connected to the buck-boost controller via I2C and FB signals to adjust the DC voltage outputted by the controller;

[0033] The main charging protocol control module communicates with the auxiliary charging protocol control module via Uart signals to transfer the charging protocol control authority.

[0034] In one embodiment, the first secondary charging protocol control circuit and the second secondary charging protocol control circuit both include D+ and D- signals, and the secondary charging protocol control module is connected to the pins of the Type-C interface through the D+ and D- signals to provide communication for transmitting a third private charging protocol.

[0035] In one embodiment, the output switch controller includes a first output switch control circuit and a second output switch control circuit;

[0036] The first output switch control circuit cuts off the output of the buck-boost controller and the power output of the first Type-C interface when no device to be charged is connected to the first Type-C interface by turning off and on the switch, and provides the output of the buck-boost controller to the power output of the first Type-C interface when a device to be charged is connected;

[0037] The second output switch control circuit cuts off the output of the buck-boost controller and the power output of the second Type-C interface when no device to be charged is connected to the second Type-C interface by turning the switch off and on, and provides the output of the buck-boost controller to the power output of the second Type-C interface when a device to be charged is connected.

[0038] The present invention has the following beneficial effects:

[0039] 1. Flexible compatibility: The present invention can simultaneously support private charging protocols for multiple brands of equipment through the architecture of collaborative work of the main charging protocol control module and the auxiliary charging protocol control module, meet the charging needs of passengers holding different mobile phone brands, and improve the charging experience.

[0040] 2. High output power: The present invention forms a Buck-Boost buck-boost power conversion topology circuit by using two external N-MOS tubes as the upper tube of the first arm bridge and the lower tube of the second arm bridge, which can disperse the heat generated by the controller chip itself during operation, thereby supporting higher output power, meeting the charging requirements of high-performance and gaming laptops, and improving the charging experience. At the same time, it is conducive to reducing peripheral circuits, reducing product volume, and reducing product costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic structural diagram of a high-power vehicle-mounted dual-port charging device according to an embodiment of the present invention;

[0042] Figure 2 The figure is a flowchart of a high-power vehicle-mounted dual-port charging method according to an embodiment of the present invention.

[0043] Among them, 100 is a power interface connector; 200 is a power input protection and filtering module; 310 is a first buck-boost control circuit; 320 is a second buck-boost control circuit; 410 is a first main charging protocol control circuit; 420 is a second main charging protocol control circuit; 510 is a first secondary charging protocol control circuit; 520 is a second secondary charging protocol control circuit; 610 is a first Type-C interface; 620 is a second Type-C interface. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] Figure 1 This is a schematic diagram of the structure of a high-power vehicle-mounted dual-port charging device according to an embodiment of the present invention, and the high-power vehicle-mounted dual-port charging device comprises:

[0046] A power interface connector 100, wherein the power interface connector 100 includes a power input module, and the power input module provides power input to the interface of the device to be charged;

[0047] A power input protection and filtering module 200, which is connected to the circuit of the high-power vehicle-mounted dual-port charging device;

[0048] A buck-boost controller, which performs a step-up or step-down conversion on an input power supply voltage;

[0049] A charging protocol controller, the charging protocol controller includes a main charging protocol control module, a secondary charging protocol control module and an identification module, the main charging protocol control module is provided with a public protocol and a private protocol, the secondary charging protocol control module is provided with a private protocol, the identification module identifies the device to be charged, the main charging protocol control module and the secondary charging protocol control module are communicatively connected to hand over the charging protocol control authority and provide charging protocols for various types of devices;

[0050] An output switch controller, the output switch controller controls the output of the buck-boost controller and the output of the interface of the device to be charged;

[0051] Among them, the power interface connector 100 provides power for the interface of the device to be charged, the power input protection and filtering module 200 and the output switch controller protect the circuit during the power transmission process, and the buck-boost controller and the charging protocol controller respectively provide the power supply voltage and charging protocol required by the device to be charged.

[0052] Specifically, the buck-boost controller may be a Buck-Boost controller.

[0053] Exemplarily, the power input protection and filtering module includes a power input protection unit and a power filtering unit;

[0054] The power input protection unit includes one or more of a fuse, a varistor, and a fusible resistor. The fuse is mainly used for overcurrent protection. The varistor is used to enhance the protection capability of the circuit and provide overvoltage protection. When used in combination with a fuse or a fusible resistor, it can provide overvoltage protection and overcurrent protection, and some circuits also have the function of lightning protection. Fusible resistors are similar to fuses in overcurrent protection, but they do not produce sparks and smoke when they melt, so they are safer.

[0055] The power filter unit includes one or more of an active power filter, a passive power filter, a harmonic filter, an EMI filter, a DV / DT filter, a sine wave filter, an LCL filter, and an input filter.

[0056] In one embodiment, the output switch controller is provided with a circuit closing module and a circuit conducting module;

[0057] When no device to be charged is connected, the circuit closing module cuts off the output of the buck-boost controller and the output of the interface of the device to be charged;

[0058] When a device to be charged is connected, the circuit conduction module provides the output of the buck-boost controller to the interface of the device to be charged.

[0059] In one embodiment, the interface of the device to be charged includes a first Type-C interface 610 and a second Type-C interface 620 .

[0060] Specifically, by closing and opening the switch through the circuit closing module and the circuit conducting module, the output of the buck-boost controller and the power output of the Type-C interface are cut off when no device to be charged is connected to the Type-C interface, and the output of the buck-boost controller is provided to the Type-C interface when a device to be charged is connected, so as to meet the requirements of the Type-C interface specification.

[0061] In one embodiment, the power input protection and filtering module 200 includes a TVS (transient voltage suppression diode) tube circuit, a P-MOS (P-channel metal oxide semiconductor field effect transistor) tube circuit and an LCπ-type filtering circuit;

[0062] The TVS tube circuit realizes power input surge protection, the P-MOS tube circuit realizes reverse connection protection, and the LC π-type filter circuit reduces external electromagnetic interference emission.

[0063] Specifically, the LC π filter circuit is a common filter circuit structure, which is composed of an inductor L and a capacitor C, and its shape is similar to the Greek letter π. It is usually used to filter out high-frequency noise and interference signals in the circuit to improve the circuit's anti-interference ability and stability.

[0064] In one embodiment, the buck-boost controller includes a first buck-boost control circuit 310 and a second buck-boost control circuit 320;

[0065] The first buck-boost control circuit 310 and the second buck-boost control circuit 320 both include an external N-MOS transistor (N-channel metal oxide semiconductor field effect transistor), an internal N-MOS transistor and a power inductor;

[0066] The external N-MOS tube, the internal N-MOS tube and the power inductor constitute a Buck-Boost step-up / step-down power conversion topology circuit;

[0067] The external N-MOS tube includes a first arm bridge upper tube and a second arm bridge lower tube, and the internal N-MOS tube includes a first arm bridge lower tube and a second arm bridge upper tube. Specifically, the external N-MOS tube means that these N-MOS tubes are added to the first buck-boost control circuit 310 and the second buck-boost control circuit 320 as external components, rather than being integrated inside the buck-boost controller. The internal N-MOS means that the N-MOS tube is integrated inside the buck-boost controller.

[0068] Furthermore, the output power of the device can be greatly increased by using two external N-MOS tubes as the upper tube of the first arm bridge and the lower tube of the second arm bridge to form a Buck-Boost step-up and step-down power conversion topology circuit.

[0069] Specifically, the first buck-boost control circuit 310 has two built-in N-MOS transistors, which are used as the first arm upper tube and the second arm lower tube respectively, and the two N-MOS transistors built into the buck-boost controller are used as the first arm lower tube and the second arm upper tube respectively, plus a power inductor, to form a Buck-Boost buck-boost power conversion topology circuit, which realizes the buck-boost conversion of the input power supply voltage and outputs the required DC voltage to meet the power supply requirements of the main charging protocol control module and the auxiliary charging protocol control module and the charging requirements of laptop computers, mobile phones and other charging devices.

[0070] Furthermore, the second buck-boost control circuit 320 also has two built-in Buck-Boost power conversion topology circuits, which are composed of two external N-MOS tubes as the first arm bridge upper tube and the second arm bridge lower tube, two N-MOS tubes built into the buck-boost controller as the first arm bridge lower tube and the second arm bridge upper tube, and a power inductor, to achieve buck-boost conversion of the input power supply voltage and output the required DC voltage to meet the power supply requirements of the main charging protocol control module and the auxiliary charging protocol control module and the charging requirements of laptop computers, mobile phones and other charging devices.

[0071] In one embodiment, the main charging protocol control module includes a first main charging protocol control circuit 410 and a second main charging protocol control circuit 420, and the secondary charging protocol control module includes a first secondary charging protocol control circuit 510 and a second secondary charging protocol control circuit 520;

[0072] The first buck-boost control circuit 310 is connected to the first main charging protocol control circuit 410 and the first sub-charging protocol control circuit 510;

[0073] The second buck-boost control circuit 320 is connected to the second main charging protocol control circuit 420 and the second sub-charging protocol control circuit 520 .

[0074] Specifically, the buck-boost controller is connected to the main charging protocol control module and the auxiliary charging protocol control module, so that the voltage boosted by the buck-boost controller meets the power supply requirements of the main charging protocol control module and the auxiliary charging protocol control module.

[0075] In one embodiment, the first main charging protocol control circuit 410 and the second main charging protocol control circuit 420 both include CC1 and CC2 (control conductor 1 and control conductor 2) signals, D+ and D- signals, GATE (gate control signal) signals, I2C (integrated circuit bus), FB signal (feedback signal) and Uart signal (universal asynchronous receiver and transmitter signal);

[0076] The CC1 and CC2 signals and the D+ and D- signals are connected to the pins of the interface of the device to be charged;

[0077] The GATE signal is connected to the output switch controller.

[0078] Specifically, CC1 is usually located at the charging pile end and is used to detect whether the charging plug is correctly connected to the charging interface of the vehicle. CC2 is usually located at the vehicle end and is used to detect whether the charging plug is correctly connected.

[0079] The D+ and D- signals usually represent the positive and negative ends of the pulse (PUL) and direction (DIR) signals.

[0080] In one embodiment, the main charging protocol control module is connected to the pins of the interface of the device to be charged through CC1 and CC2 signals to identify whether there is a device to be charged connected to the interface and provide communication between the PD charging protocol and the first private charging protocol;

[0081] The main charging protocol control module is connected to the pins of the Type-C interface through D+ and D- signals to provide communication between the traditional low-power BC1.2 charging protocol (Battery Charging Specification Version 1.2) and the second private charging protocol;

[0082] The main charging protocol control module controls the output switch circuit through the GATE signal to turn on the power output after the device to be charged is connected;

[0083] The main charging protocol control module is connected to the buck-boost controller via I2C and FB signals to adjust the DC voltage outputted by the controller;

[0084] The main charging protocol control module communicates with the auxiliary charging protocol control module via Uart signals to transfer the charging protocol control authority.

[0085] Specifically, the first private charging protocol and the second private charging protocol are different private charging protocols of two brands.

[0086] In one embodiment, the first secondary charging protocol control circuit 510 and the second secondary charging protocol control circuit 520 both include D+ and D- signals, and the secondary charging protocol control module is connected to the pins of the Type-C interface through the D+ and D- signals to provide communication of the third private charging protocol.

[0087] Specifically, the third private charging agreement is a different private charging agreement other than the above two brands.

[0088] Furthermore, the main charging protocol control module and the auxiliary charging protocol control module provide private charging protocols of multiple brands including private charging protocols of mainstream brands, such as Huawei, Xiaomi, OPPO and other brands.

[0089] In one embodiment, the output switch controller includes a first output switch control circuit and a second output switch control circuit;

[0090] The first output switch control circuit cuts off the output of the buck-boost controller and the power output of the first Type-C interface 610 when no device to be charged is connected to the first Type-C interface 610 by turning on and off the switch, and provides the output of the buck-boost controller to the power output of the first Type-C interface 610 when a device to be charged is connected;

[0091] The second output switch control circuit cuts off the output of the buck-boost controller and the power output of the second Type-C interface 620 when no device to be charged is connected to the second Type-C interface 620 by turning the switch off and on, and provides the output of the buck-boost controller to the power output of the second Type-C interface 620 when a device to be charged is connected.

[0092] The present invention can increase the support for the public charging protocol, namely the PD charging protocol, to a maximum of 100W for a single port and 200W for two ports at the same time; and can support the private charging protocols of various brands on the market on any interface. This can meet the needs of vehicle charging scenarios, fast charging of high-power laptops and mainstream mobile phone brands, and improve the charging experience.

[0093] The power interface connector 100 is connected to the vehicle computer and the power system through a cable to provide power input, enable control signal input, and LED backlight power input.

[0094] Power input protection and filtering module 200: Power input surge protection is achieved through TVS tube circuit; anti-reverse connection protection is achieved through P-MOS tube circuit; external electromagnetic interference emission is reduced and anti-electromagnetic interference capability is improved through LCπ type filtering circuit.

[0095] Buck-Boost buck-boost controller: The buck-boost controller controls the Buck-Boost buck-boost power conversion topology circuit, which is composed of two external N-MOS tubes as the first arm bridge upper tube and the second arm bridge lower tube, two N-MOS tubes built into the buck-boost controller as the first arm bridge lower tube and the second arm bridge upper tube, and a power inductor, to achieve buck-boost conversion of the input power supply voltage and output the required DC voltage to meet the power supply requirements of the main charging protocol control module and the auxiliary charging protocol control module and the charging requirements of laptops, mobile phones and other devices waiting to be charged.

[0096] Main charging protocol control module: connected to the pins of the Type-C interface through CC1 and CC2 signals to identify whether there is a device to be charged connected to the Type-C interface and provide communication between the PD charging protocol and the first private charging protocol; connected to the pins of the Type-C interface through D+ and D- signals to provide communication between the traditional low-power BC1.2 charging protocol and the second private charging protocol; controls the output switch circuit through the GATE signal to turn on the power output after the device to be charged is connected; connects to the Buck-Boost buck-boost controller through I2C and FB signals to adjust the DC voltage it outputs; communicates with the auxiliary charging protocol control module through Uart signals to hand over charging protocol control authority.

[0097] Secondary charging protocol control module: connects the D+ and D- signals to the pins of the Type-C interface to provide communication for the third private charging protocol; communicates with the primary charging protocol controller via Uart signals to transfer charging protocol control authority.

[0098] Output switch controller: By turning the switch off and on, the output of the Buck-Boost buck-boost controller and the power output of the Type-C interface are cut off when no device to be charged is connected to the Type-C interface, and the output of the Buck-Boost buck-boost controller is provided to the power output of the Type-C interface when a device to be charged is connected, so as to meet the requirements of the Type-C interface specification.

[0099] A high-power vehicle-mounted dual-port charging method, such as Figure 2 As shown, the high-power vehicle-mounted dual-port charging device is implemented, including:

[0100] Step S101, after the high-power vehicle-mounted dual-port charging device is connected to a power source and works, the main charging protocol control module monitors in real time and identifies whether a device to be charged is connected to the Type-C interface;

[0101] Step S201, after the main charging protocol control module identifies that there is a device to be charged, it further identifies whether the device supports the public PD charging protocol. If the device to be charged supports it, it starts charging with the PD charging protocol. If the device to be charged does not support it, it starts charging with the traditional low-power charging protocol.

[0102] Step S301, after the main charging protocol control module and the device to be charged successfully enter the PD charging protocol charging process, further identify whether the device is a first brand or second brand mobile phone. If the device is a first brand or second brand mobile phone, start charging with the private charging protocol of the first brand or second brand, or hand over the charging protocol control right to the secondary charging protocol control module;

[0103] Step S401, after the secondary charging protocol control module obtains the charging protocol control right, it identifies whether the device to be charged is a third-brand mobile phone. If the device to be charged is a third-brand mobile phone, it starts charging with the third private charging protocol. If the device is not a third-brand mobile phone, it returns the charging protocol control right to the primary charging protocol control module and continues charging with the PD charging protocol.

[0104] Step S501, after the charging protocol is determined and the charging is stabilized, the main charging protocol control module or the auxiliary charging protocol control module will synchronously monitor in real time whether there is an abnormal charging error or the device is unplugged. If it occurs, it will be restored to the initial state of the program. If not, the charging process will continue.

[0105] Specifically, the main charging protocol control module can adopt a charging protocol controller with a model number of SC2021Q, and the auxiliary charging protocol control module can adopt a charging protocol controller with a model number of SC2155Q.

[0106] The present invention has the following beneficial effects:

[0107] 1. Flexible compatibility: The present invention can simultaneously support private charging protocols for multiple brands of equipment through the architecture of collaborative work of the main charging protocol control module and the auxiliary charging protocol control module, meet the charging needs of passengers holding different mobile phone brands, and improve the charging experience.

[0108] 2. High output power: The present invention forms a Buck-Boost buck-boost power conversion topology circuit by using two external N-MOS tubes as the upper tube of the first arm bridge and the lower tube of the second arm bridge, which can disperse the heat generated by the controller chip itself during operation, thereby supporting higher output power, meeting the charging requirements of high-performance and gaming laptops, and improving the charging experience. At the same time, it is conducive to reducing peripheral circuits, reducing product volume, and reducing product costs.

[0109] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0110] It should be noted that, in the present application, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. It should also be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0111] In addition, it should be noted that, unless otherwise clearly specified and limited, the words "connect" and "drive" used in the description of this application should be understood in a broad sense, which can be direct, through an intermediate medium, or the relationship between two elements. Those skilled in the art can understand their specific meanings in this application according to specific circumstances. In this article, "first" and "second" and other similar words are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0112] The above embodiments are provided for persons familiar with the art to implement or use the present application. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the application concept of the present application. Therefore, the protection scope of the present application is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A high-power vehicle-mounted dual-port charging device, characterized in that: The high-power vehicle-mounted dual-port charging device comprises: A power interface connector, the power interface connector comprising a power input module, the power input module providing power input to the interface of the device to be charged; A power input protection and filtering module, which includes a power input protection unit and a power filtering unit, and is connected to the circuit of the high-power vehicle-mounted dual-port charging device; A buck-boost controller, which performs a step-up or step-down conversion on an input power supply voltage; A charging protocol controller, the charging protocol controller includes a main charging protocol control module, a secondary charging protocol control module and an identification module, the main charging protocol control module is provided with a public protocol and a private protocol, the secondary charging protocol control module is provided with a private protocol, the identification module identifies the device to be charged, the main charging protocol control module and the secondary charging protocol control module are communicatively connected to hand over the charging protocol control authority and provide charging protocols for various types of devices; An output switch controller, the output switch controller controls the output of the buck-boost controller and the output of the interface of the device to be charged; Among them, the power interface connector provides power for the interface of the device to be charged, the power input protection and filtering module and the output switch controller protect the circuit during the power transmission process, and the buck-boost controller and the charging protocol controller respectively provide the power supply voltage and charging protocol required by the device to be charged.

2. The high-power vehicle-mounted dual-port charging device according to claim 1, characterized in that: The output switch controller is provided with a circuit closing module and a circuit conducting module; When no device to be charged is connected, the circuit closing module cuts off the output of the buck-boost controller and the output of the interface of the device to be charged; When a device to be charged is connected, the circuit conduction module provides the output of the buck-boost controller to the interface of the device to be charged.

3. The high-power vehicle-mounted dual-port charging device according to claim 1, characterized in that: The interface of the device to be charged includes a first Type-C interface and a second Type-C interface.

4. The high-power vehicle-mounted dual-port charging device according to claim 1, characterized in that: The power input protection and filtering module includes a TVS tube circuit, a P-MOS tube circuit and an LCπ-type filtering circuit; The TVS tube circuit realizes power input surge protection, the P-MOS tube circuit realizes reverse connection protection, and the LC π-type filter circuit reduces external electromagnetic interference emission.

5. The high-power vehicle-mounted dual-port charging device according to claim 1, characterized in that: The buck-boost controller comprises a first buck-boost control circuit and a second buck-boost control circuit; The first buck-boost control circuit and the second buck-boost control circuit both include an external N-MOS tube, an internal N-MOS tube and a power inductor; The external N-MOS tube, the internal N-MOS tube and the power inductor constitute a Buck-Boost step-up / step-down power conversion topology circuit; The external N-MOS tube includes a first arm bridge upper tube and a second arm bridge lower tube, and the internal N-MOS tube includes a first arm bridge lower tube and a second arm bridge upper tube.

6. The high-power vehicle-mounted dual-port charging device according to claim 5, characterized in that: The main charging protocol control module includes a first main charging protocol control circuit and a second main charging protocol control circuit, and the auxiliary charging protocol control module includes a first auxiliary charging protocol control circuit and a second auxiliary charging protocol control circuit; The first buck-boost control circuit is connected to the first main charging protocol control circuit and the first auxiliary charging protocol control circuit; The second buck-boost control circuit is connected to the second main charging protocol control circuit and the second sub-charging protocol control circuit.

7. The high-power vehicle-mounted dual-port charging device according to claim 6, characterized in that: The first main charging protocol control circuit and the second main charging protocol control circuit both include CC1 and CC2 signals, D+ and D- signals, GATE signals, I2C, FB signals and Uart signals; The CC1 and CC2 signals and the D+ and D- signals are connected to the pins of the interface of the device to be charged; The GATE signal is connected to the output switch controller.

8. The high-power vehicle-mounted dual-port charging device according to claim 7, characterized in that: The main charging protocol control module is connected to the pins of the interface of the device to be charged through CC1 and CC2 signals to identify whether there is a device to be charged connected to the interface and provide communication between the PD charging protocol and the first private charging protocol; The main charging protocol control module is connected to the pins of the Type-C interface through D+ and D- signals to provide communication between the traditional low-power BC1.2 charging protocol and the second private charging protocol; The main charging protocol control module controls the output switch circuit through the GATE signal to turn on the power output after the device to be charged is connected; The main charging protocol control module is connected to the buck-boost controller via I2C and FB signals to adjust the DC voltage outputted by the controller; The main charging protocol control module communicates with the auxiliary charging protocol control module via Uart signals to transfer the charging protocol control authority.

9. The high-power vehicle-mounted dual-port charging device according to claim 6, characterized in that: The first secondary charging protocol control circuit and the second secondary charging protocol control circuit both include D+ and D- signals, and the secondary charging protocol control module is connected to the pins of the Type-C interface through the D+ and D- signals to provide communication for transmitting a third private charging protocol.

10. The high-power vehicle-mounted dual-port charging device according to claim 3, characterized in that: The output switch controller includes a first output switch control circuit and a second output switch control circuit; The first output switch control circuit cuts off the output of the buck-boost controller and the power output of the first Type-C interface when no device to be charged is connected to the first Type-C interface by turning off and on the switch, and provides the output of the buck-boost controller to the power output of the first Type-C interface when a device to be charged is connected; The second output switch control circuit cuts off the output of the buck-boost controller and the power output of the second Type-C interface when no device to be charged is connected to the second Type-C interface by turning the switch off and on, and provides the output of the buck-boost controller to the power output of the second Type-C interface when a device to be charged is connected.

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