Vehicle-mounted double-port high-power charging and data transmission device with HUB

Abstract

The invention discloses a vehicle-mounted double-port high-power charging and data transmission device with a HUB. The device comprises a front cover, an upper iron cover and a lower iron cover, wherein the upper iron cover and the lower iron cover are detachably connected with the front cover; at least one PCBA main board is arranged between the upper iron cover and the lower iron cover; an uplink data transmission port, a power port, a downlink A port and a downlink C port are sequentially arranged on the periphery of the PCBA main board, the downlink A port and the downlink C port are used for supporting charging and USB2.0 data transmission respectively, the vehicle-mounted charging device is provided with an HUB chip and supports USB2.0 data transmission, only one uplink data transmission port is connected with a host, hardware ports of the host are saved to a certain extent, and the cost is reduced. The double ports support input charging of two types of equipment and data transmission at the same time, and the charging power of one of the ports is up to 60W, so that compared with a USB charging device which supports data transmission and is relatively low in power in the market, the USB charging device saves charging time of drivers and conductors and brings convenience at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of charging, and in particular relates to a vehicle-mounted dual-port high-power charging and data transmission device with a HUB. Background Art

[0002] At present, the car chargers on the market are generally one-to-one downstream and upstream ports connected to the host, or low-power charging and data transmission ports for charging connected mobile phones or pads.

[0003] Therefore, in view of the technical problems that the above-mentioned car chargers are generally connected to the host through one-to-one downstream and upstream ports, or the low-power charging and data transmission ports are used to charge connected mobile phones or pads, it is urgent to design and develop a car-mounted dual-port high-power charging and data transmission device with a HUB. Summary of the invention

[0004] In order to overcome the shortcomings and difficulties of the above-mentioned prior art, the purpose of the present invention is to provide a vehicle-mounted dual-port high-power charging and data transmission device with a HUB, so that only one data transmission port is connected to the host in the uplink, which saves the hardware port of the host to a certain extent, and the dual ports in the downlink support two devices for input charging and data transmission at the same time, and the charging power of one of the ports is as high as 60W.

[0005] The purpose of the present invention is to provide a vehicle-mounted dual-port high-power charging and data transmission device with a HUB;

[0006] The object of the present invention is achieved as follows: the device comprises a front cover, and an upper iron cover and a lower iron cover respectively detachably connected to the front cover; at least one PCBA mainboard is arranged between the upper iron cover and the lower iron cover;

[0007] The PCBA mainboard is provided with an upstream data transmission port, a power port, and a downstream A port and a downstream C port for supporting charging and USB2.0 data transmission respectively.

[0008] Furthermore, the PCBA mainboard includes, from top to bottom, a first layer board, a second layer board, a third layer board and a fourth layer board.

[0009] Furthermore, the PCBA mainboard is respectively provided with a first control circuit for realizing charging, a second control circuit for realizing data transmission, a third control circuit for realizing power conversion and charging protocol, and a fourth control circuit for supporting CDP mode 15W power integration.

[0010] Furthermore, the first control circuit is provided with a first control chip;

[0011] The third pin of the first control chip is respectively connected to one end of the fourth resistor and one end of the sixth resistor; the other end of the fourth resistor is respectively connected to the fourth pin of the first control chip, one end of the eighth capacitor, and one end of the second inductor;

[0012] The other ends of the two inductors are respectively connected to the seventh capacitor, the positive electrode of the second bypass capacitor, the negative electrode of the second diode, and one side of the first field effect transistor.

[0013] Furthermore, the first control chip is a DC / DC conversion chip; the model of the first control chip is SC8101.

[0014] Furthermore, a second control chip is provided in the second control circuit;

[0015] The 42nd pin of the second control chip is connected to the 3rd pin of the first crystal oscillator and one end of the 29th capacitor respectively;

[0016] The other end of the 29th capacitor, the second pin of the first crystal oscillator, one end of the 31st capacitor and one end of the 30th capacitor are grounded in common;

[0017] The other end of the thirty-first capacitor is connected to one end of the twenty-fourth resistor; the other end of the twenty-fourth resistor is connected to the first pin of the first crystal oscillator; the fourth pin of the first crystal oscillator is respectively connected to one end of the seventieth resistor and the other end of the thirtieth capacitor.

[0018] Furthermore, the model of the second control chip is USB24913C.

[0019] Furthermore, a fourth control chip is provided in the third control circuit;

[0020] The third pin of the fourth control chip is respectively connected to one end of the thirty-ninth capacitor, one end of the fortieth capacitor, one end of the forty-first capacitor, the positive electrode of the fourth bypass capacitor, and the charging device required voltage circuit;

[0021] The other end of the thirty-ninth capacitor, the other end of the fortieth capacitor, the other end of the forty-first capacitor and the negative electrode of the fourth bypass capacitor are grounded in common.

[0022] Furthermore, the model of the fourth control chip is MPQ4242.

[0023] Furthermore, a fifth control chip is provided in the fourth control circuit;

[0024] The fourth pin, the eighth pin and the ninth pin of the fifth control chip are sequentially connected to a charging circuit for charging the input device;

[0025] The charging circuit is provided with a seventh USB A port connector; the fifth pin, the sixth pin, the seventh pin and the eighth pin of the seventh USB A port connector are commonly connected to one end of a fifty-ninth resistor and one end of a fifty-fourth capacitor;

[0026] The other end of the fifty-ninth resistor, the other end of the fifty-fourth capacitor, and the fourth pin of the seventh USB A port connector are grounded in common;

[0027] The model of the fifth control chip is MPQ4228-C.

[0028] The present invention provides a vehicle-mounted dual-port high-power charging and data transmission device with a HUB. The device includes a front cover, and an upper iron cover and a lower iron cover respectively detachably connected to the front cover; at least one PCBA mainboard is arranged between the upper iron cover and the lower iron cover; an upstream data transmission port, a power port, and a downstream A port and a downstream C port respectively used to support charging and USB2.0 data transmission are sequentially arranged around the PCBA mainboard. The vehicle-mounted charging device supporting USB2.0 data transmission with a HUB chip has only one upstream data transmission port connected to a host, which saves the hardware port of the host to a certain extent; the downstream dual ports support input charging of two devices and data transmission at the same time, and the charging power of one of the ports is as high as 60W. Compared with the USB charging devices on the market that support data transmission but have relatively low power, this saves the charging time of drivers and passengers and brings convenience.

[0029] In addition, in the solution of the present invention, the two downstream USB ports can be connected to two devices at the same time. These two devices can be charged and can also transmit data. The workflow is: the one that is connected first is enumerated by the host. Unless the host has made application layer constraints, such as not allowing the second device to be enumerated, the host will give priority to obtaining the information of the USB device that was connected first, and then load the corresponding device driver, and then obtain the information of the second device in turn and load the corresponding driver. When two mobile phones are connected at the same time, the two mobile phones can be charged at the same time and the host can simultaneously display the data entered into the mobile phone hard disk to interact. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A three-dimensional schematic diagram of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0032] Figure 2 It is an exploded schematic diagram of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0033] Figure 3 This is a schematic diagram of a PCBA board of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0034] Figure 4 This is a schematic diagram of the first layer of the PCBA board of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0035] Figure 5 This is a schematic diagram of the second layer of the PCBA board of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0036] Figure 6 This is a schematic diagram of the third layer of the PCBA board of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0037] Figure 7 This is a schematic diagram of the fourth layer of the PCBA board of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0038] Figure 8 This is a schematic diagram of the principle structure circuit of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB of the present invention;

[0039] Fig. 9 This is a schematic diagram of a first control circuit of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0040] Fig.10 It is a schematic diagram of the second control circuit of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0041] Fig.11 A schematic diagram of a third control circuit of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0042] Fig.12 It is a schematic diagram of a fourth control circuit of a vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to the present invention;

[0043] In the figure: 1-front cover; 2-upper iron cover; 3-lower iron cover; 4-PCBA motherboard; 5-TYPE-C; 6-USB-A; U1-first control chip; U2-second control chip; U4-fourth control chip; U5-fifth control chip; R4-fourth resistor; R6-sixth resistor; C8-eighth capacitor; L2-second inductor; C7-seventh capacitor; CE2-second bypass capacitor; D2-negative electrode of second diode; Q1-first field effect tube; Y1-first crystal oscillator; C29-twenty-ninth capacitor; C31-thirty-first capacitor; R42-twenty-fourth resistor; R70-seventieth resistor; C30-thirtieth capacitor; C39-thirty-ninth capacitor; C40-fortieth capacitor; C41-forty-first capacitor; CE4-fourth bypass capacitor; J7-seventh USB A port connector; R59-fifty-ninth resistor; C54-fifty-fourth capacitor;

[0044] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0045] In order to better understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0046] The present invention may also be implemented or applied through other different specific examples, and the details in this specification may also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. Secondly, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] The present invention will be further described below in conjunction with the accompanying drawings. Figure 1-Figure 12 As shown, the present invention provides a vehicle-mounted dual-port high-power charging and data transmission device with a HUB.

[0050] The device comprises a front cover, and an upper iron cover and a lower iron cover respectively detachably connected to the front cover; characterized in that at least one PCBA mainboard is arranged between the upper iron cover and the lower iron cover;

[0051] The PCBA mainboard is provided with an upstream data transmission port, a power port, and a downstream A port and a downstream C port for supporting charging and USB2.0 data transmission respectively.

[0052] The PCBA main board includes a first layer board, a second layer board, a third layer board and a fourth layer board from top to bottom.

[0053] The PCBA mainboard is respectively provided with a first control circuit for realizing charging, a second control circuit for realizing data transmission, a third control circuit for realizing power conversion and charging protocol, and a fourth control circuit for supporting CDP mode 15W power supply integration.

[0054] The first control circuit is provided with a first control chip;

[0055] The third pin of the first control chip is respectively connected to one end of the fourth resistor and one end of the sixth resistor; the other end of the fourth resistor is respectively connected to the fourth pin of the first control chip, one end of the eighth capacitor, and one end of the second inductor;

[0056] The other ends of the two inductors are respectively connected to the seventh capacitor, the positive electrode of the second bypass capacitor, the negative electrode of the second diode, and one side of the first field effect transistor.

[0057] The first control chip is a DC / DC conversion chip; the model of the first control chip is SC8101.

[0058] The second control circuit is provided with a second control chip;

[0059] The 42nd pin of the second control chip is connected to the 3rd pin of the first crystal oscillator and one end of the 29th capacitor respectively;

[0060] The other end of the 29th capacitor, the second pin of the first crystal oscillator, one end of the 31st capacitor and one end of the 30th capacitor are grounded in common;

[0061] The other end of the thirty-first capacitor is connected to one end of the twenty-fourth resistor; the other end of the twenty-fourth resistor is connected to the first pin of the first crystal oscillator; the fourth pin of the first crystal oscillator is respectively connected to one end of the seventieth resistor and the other end of the thirtieth capacitor.

[0062] The model of the second control chip is USB24913C.

[0063] The third control circuit is provided with a fourth control chip;

[0064] The third pin of the fourth control chip is respectively connected to one end of the thirty-ninth capacitor, one end of the fortieth capacitor, one end of the forty-first capacitor, the positive electrode of the fourth bypass capacitor, and the charging device required voltage circuit;

[0065] The other end of the thirty-ninth capacitor, the other end of the fortieth capacitor, the other end of the forty-first capacitor and the negative electrode of the fourth bypass capacitor are grounded in common.

[0066] The model of the fourth control chip is MPQ4242.

[0067] The fourth control circuit is provided with a fifth control chip;

[0068] The fourth pin, the eighth pin and the ninth pin of the fifth control chip are sequentially connected to a charging circuit for charging the input device;

[0069] The charging circuit is provided with a seventh USB A port connector; the fifth pin, the sixth pin, the seventh pin and the eighth pin of the seventh USB A port connector are commonly connected to one end of a fifty-ninth resistor and one end of a fifty-fourth capacitor;

[0070] The other end of the fifty-ninth resistor, the other end of the fifty-fourth capacitor, and the fourth pin of the seventh USB A port connector are grounded in common;

[0071] The model of the fifth control chip is MPQ4228-C.

[0072] Specifically, in the first control circuit of the embodiment of the present invention, J1 is the input end of the USB charging device, that is, the vehicle voltage DC12V. D1 is a high-power bidirectional TVS tube, which uses the nonlinear characteristics of the device to clamp the overvoltage to a lower voltage value to protect the subsequent circuit. The main parameters include reverse breakdown voltage, maximum clamping voltage, instantaneous power, junction capacitance level response time, etc. Its response time can reach ps level, which is the fastest among the voltage-limiting surge protection devices. When used for overvoltage protection of electronic circuits, its response speed can meet the requirements. L1 and the capacitors on both sides are a filter circuit composed of common-mode inductors, which reduces the interference at the input end to meet the conduction and radiation tests of EMC tests. The input end reverse protection circuit composed of MOS tubes composed of Q1, D2, and R1. SC8101 is a DC / DC conversion chip of Nanxin, which converts the input 12V voltage into 5V to power the HUB chip U2.

[0073] In the second control circuit, U2 is a HUB chip of Microchip, J2 is a data transmission connector for uplink connection to the host, and Y1 is a crystal oscillator. Data transmission between two downlink interfaces and the vehicle-mounted host can be realized through one uplink port.

[0074] The third control circuit is a schematic diagram for supporting 60W charging of TypeC port. U4 is a chip of MPS Core Source that integrates BUCK-BOOST power conversion and charging protocol, which converts the 12V voltage input from the vehicle end into the voltage required by the charging device connected through the TypeC connector (J6). It can support 5V, 9V, 15V, 20V, and can charge mobile phones, laptops and other devices up to 60W. It also supports CDP mode (supports USB2.0 data transmission).

[0075] The fourth control circuit is a schematic diagram supporting 15W charging of USB A port. U5 is a 15W power integrated chip supporting CDP mode from MPS Core Source, which charges the input device through the USB A port connector (J7) with a voltage of 5V.

[0076] In the line diagram of the solution of the present invention, Type C supports 60W charging, PD3.0 / QC3.0 and USB2.0 data transmission. USB A port supports 15W charging and USB2.0 data transmission.

[0077] The performance parameters of the vehicle-mounted dual-port high-power charging and data transmission device with HUB provided in the solution of the present invention are as follows:

[0078]

[0079] The USB HUB of the present invention has only one data transmission interface connected to the host on the upstream side, and a dual-port USB interface that supports charging and data transmission on the downstream side. The HUB chip uses Microchip's USB24913C, which can expand two USB interfaces and connect two devices at the same time. The workflow is: the first device connected is enumerated by the host, unless the host has made application layer constraints, such as not allowing the second device to be enumerated, otherwise the host will give priority to obtaining the information of the USB device that was connected first, and then load the corresponding device driver, and then obtain the information of the second device in turn and load the corresponding driver. As shown in the figure above: use the computer as the host, use a power supply to power the product, connect the upstream port to the computer's USB interface, and connect the two downstream ports to the iPhone 15 and Xiaomi 14 respectively. The host side can simultaneously display the data transferred into the mobile phone hard disk.

[0080] Mobile phone compatibility test:

[0081]

[0082] The present invention provides a vehicle-mounted dual-port high-power charging and data transmission device with a HUB. The device includes a front cover, and an upper iron cover and a lower iron cover respectively detachably connected to the front cover; at least one PCBA mainboard is arranged between the upper iron cover and the lower iron cover; an upstream data transmission port, a power port, and a downstream A port and a downstream C port respectively used to support charging and USB2.0 data transmission are sequentially arranged around the PCBA mainboard. The vehicle-mounted charging device supporting USB2.0 data transmission with a HUB chip has only one upstream data transmission port connected to a host, which saves the hardware port of the host to a certain extent; the downstream dual ports support input charging of two devices and data transmission at the same time, and the charging power of one of the ports is as high as 60W. Compared with the USB charging devices on the market that support data transmission but have relatively low power, this saves the charging time of drivers and passengers and brings convenience.

[0083] In addition, in the solution of the present invention, the two downstream USB ports can be connected to two devices at the same time. These two devices can be charged and can also transmit data. The workflow is: the one that is connected first is enumerated by the host. Unless the host has made application layer constraints, such as not allowing the second device to be enumerated, the host will give priority to obtaining the information of the USB device that was connected first, and then load the corresponding device driver, and then obtain the information of the second device in turn and load the corresponding driver. When two mobile phones are connected at the same time, the two mobile phones can be charged at the same time and the host can simultaneously display the data entered into the mobile phone hard disk to interact.

[0084] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vehicle-mounted dual-port high-power charging and data transmission device with a HUB, the device comprising a front cover, and an upper iron cover and a lower iron cover respectively detachably connected to the front cover; characterized in that: At least one PCBA mainboard is arranged between the upper iron cover and the lower iron cover; The PCBA mainboard is provided with an upstream data transmission port, a power port, and a downstream A port and a downstream C port for supporting charging and USB2.0 data transmission respectively.

2. According to claim 1, a vehicle-mounted dual-port high-power charging and data transmission device with a HUB is characterized in that: The PCBA main board includes a first layer board, a second layer board, a third layer board and a fourth layer board from top to bottom.

3. A vehicle-mounted dual-port high-power charging and data transmission device with a HUB according to claim 1 or 2, characterized in that: The PCBA mainboard is respectively provided with a first control circuit for realizing charging, a second control circuit for realizing data transmission, a third control circuit for realizing power conversion and charging protocol, and a fourth control circuit for supporting CDP mode 15W power supply integration.

4. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 3, characterized in that: The first control circuit is provided with a first control chip; The third pin of the first control chip is respectively connected to one end of the fourth resistor and one end of the sixth resistor; the other end of the fourth resistor is respectively connected to the fourth pin of the first control chip, one end of the eighth capacitor, and one end of the second inductor; The other ends of the two inductors are respectively connected to the seventh capacitor, the positive electrode of the second bypass capacitor, the negative electrode of the second diode, and one side of the first field effect transistor.

5. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 4 is characterized in that: The first control chip is a DC / DC conversion chip; the model of the first control chip is SC8101.

6. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 3, characterized in that: The second control circuit is provided with a second control chip; The 42nd pin of the second control chip is connected to the 3rd pin of the first crystal oscillator and one end of the 29th capacitor respectively; The other end of the 29th capacitor, the second pin of the first crystal oscillator, one end of the 31st capacitor and one end of the 30th capacitor are grounded in common; The other end of the thirty-first capacitor is connected to one end of the twenty-fourth resistor; the other end of the twenty-fourth resistor is connected to the first pin of the first crystal oscillator; the fourth pin of the first crystal oscillator is respectively connected to one end of the seventieth resistor and the other end of the thirtieth capacitor.

7. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 6, characterized in that: The model of the second control chip is USB24913C.

8. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 3, characterized in that: The third control circuit is provided with a fourth control chip; The third pin of the fourth control chip is respectively connected to one end of the thirty-ninth capacitor, one end of the fortieth capacitor, one end of the forty-first capacitor, the positive electrode of the fourth bypass capacitor, and the charging device required voltage circuit; The other end of the thirty-ninth capacitor, the other end of the fortieth capacitor, the other end of the forty-first capacitor and the negative electrode of the fourth bypass capacitor are grounded in common.

9. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 8, characterized in that: The model of the fourth control chip is MPQ4242.

10. The vehicle-mounted dual-port high-power charging and data transmission device with HUB according to claim 3, characterized in that: The fourth control circuit is provided with a fifth control chip; The fourth pin, the eighth pin and the ninth pin of the fifth control chip are sequentially connected to a charging circuit for charging the input device; The charging circuit is provided with a seventh USB A port connector; the fifth pin, the sixth pin, the seventh pin and the eighth pin of the seventh USB A port connector are commonly connected to one end of a fifty-ninth resistor and one end of a fifty-fourth capacitor; The other end of the fifty-ninth resistor, the other end of the fifty-fourth capacitor, and the fourth pin of the seventh USB A port connector are grounded in common; The model of the fifth control chip is MPQ4228-C.

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