A vehicle-mounted Ethernet communication device and vehicle based on 10BASE-T1S

Abstract

The embodiment of the present application discloses an in-vehicle Ethernet communication device and a vehicle based on 10BASE-T1S, including a controller, a communication module, a circuit protection module, a power supply module, a power receiving module, a first interface module and a second interface module; the controller is connected to the first end of the communication module, and the second end of the communication module is connected to the first end of the circuit protection module; the second end of the circuit protection module is connected to the first end of the first interface module, the output end of the power supply module and the input end of the power receiving module; the input end of the power supply module is connected to the first end of the second interface module, and the second end of the second interface module is used to access a voltage signal; the power supply module is used to transmit the voltage signal to the first end of the first interface module and the input end of the power receiving module when the input end thereof is connected to a voltage signal; the first interface module is used to connect to at least one other in-vehicle Ethernet communication device based on 10BASE-T1S; the power receiving module is used to output a voltage signal of a target voltage value; the problem of low production and assembly efficiency is solved, and the work efficiency of production and assembly is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of Ethernet technology, and in particular to a 10BASE-T1S-based vehicle-mounted Ethernet communication device and a vehicle. Background Art

[0002] With the increasing intelligence and networking of automobiles, traditional bus technologies (such as CAN and LIN) can no longer meet the needs of internal automobile communications. As a new type of in-vehicle network technology, automotive Ethernet technology has higher bandwidth, lower latency and stronger scalability, and can gradually replace traditional bus technology to become the backbone network for internal automobile communications.

[0003] When the vehicle Ethernet communication devices are cascaded, one of the vehicle Ethernet communication devices is used as a power supply device, connected to the power supply current, and outputs the corresponding DC current to the other vehicle Ethernet communication device, which is used as a powered device. The existing vehicle Ethernet communication devices used as power supply devices and vehicle Ethernet communication devices used as powered devices have different internal circuit settings based on the power supply function and power receiving function implemented. Therefore, the vehicle Ethernet communication devices used as power supply devices and the vehicle Ethernet communication devices used as powered devices need to be designed, produced and assembled separately, which makes the production and assembly work efficiency low. Summary of the invention

[0004] The embodiments of the present application provide an in-vehicle Ethernet communication device and a vehicle based on 10BASE-T1S, which can solve the problem of low efficiency in the production and assembly of in-vehicle Ethernet communication equipment and improve the overall efficiency of production and assembly.

[0005] In a first aspect, an embodiment of the present application provides a 10BASE-T1S-based in-vehicle Ethernet communication device, including: a controller, a communication module, a circuit protection module, a power supply module, a power receiving module, a first interface module and a second interface module;

[0006] The controller is connected to the first end of the communication module, and the second end of the communication module is connected to the first end of the circuit protection module;

[0007] The second end of the circuit protection module is connected to the first end of the first interface module, the output end of the power supply module and the input end of the power receiving module;

[0008] The input end of the power supply module is connected to the first end of the second interface module, and the second end of the second interface module is used to access the voltage signal;

[0009] The power supply module is used to transmit the voltage signal to the first end of the first interface module and the input end of the power receiving module when the input end thereof is connected to the voltage signal;

[0010] The second end of the first interface module is used to connect to the second end of the first interface module of at least one first vehicle Ethernet communication device. The first interface module is used to transmit the voltage signal to the input end of the power receiving module when receiving the voltage signal transmitted by the first vehicle Ethernet communication device connected thereto. The first vehicle Ethernet communication device has the same structural arrangement as the vehicle Ethernet communication device based on 10BASE-T1S. The first interface module is also used to transmit the voltage signal to the first vehicle Ethernet communication device connected thereto when receiving the voltage signal transmitted by the power supply module.

[0011] The power receiving module is used to transform the voltage signal received at its input end to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the in-vehicle Ethernet communication device based on 10BASE-T1S.

[0012] Furthermore, the 10BASE-T1S-based in-vehicle Ethernet communication device further includes a first diode;

[0013] An anode of the first diode is connected to the output end of the power supply module, and a cathode of the first diode is connected to the first end of the first interface module.

[0014] Further, the power supply module includes a first anti-reverse connection submodule and a current limiting submodule;

[0015] The first end of the first anti-reverse connection submodule is connected to the first end of the second interface module, the second end of the first anti-reverse connection submodule is connected to the first end of the current limiting submodule, and the third end of the first anti-reverse connection submodule is grounded;

[0016] The second end of the current limiting submodule is connected to the anode of the first diode.

[0017] Further, the first anti-reverse connection submodule includes: a rectifier bridge, a first bidirectional transient suppression diode and at least one first capacitor;

[0018] The first end of the first capacitor is connected to the first end of the first bidirectional transient suppression diode, the AC input positive terminal of the rectifier bridge, and the first end of the second interface module;

[0019] The second end of the first capacitor is connected to the second end of the first bidirectional transient suppression diode, the AC input negative terminal of the rectifier bridge, and the first end of the second interface module;

[0020] The DC output positive terminal of the rectifier bridge is connected to the first end of the current limiting submodule, and the DC output negative terminal of the rectifier bridge is grounded.

[0021] Further, the current limiting submodule includes: a first chip, a resistance unit, a first resistor, a first switch tube, a first unidirectional transient suppression diode, a second capacitor, a third capacitor and at least one fourth capacitor;

[0022] The voltage input pin of the first chip is connected to the first end of the resistance unit, the first end of the second capacitor, the first end of the first resistor, and the DC output positive terminal of the rectifier bridge;

[0023] The undervoltage lockout pin of the first chip is connected to the second end of the resistor unit, and the overvoltage lockout pin of the first chip is connected to the third end of the resistor unit and the first end of the third capacitor;

[0024] The fourth end of the resistor unit, the second end of the second capacitor, and the second end of the third capacitor are grounded;

[0025] The detection pin of the first chip is connected to the second end of the first resistor and the drain of the first switch tube;

[0026] The control pin of the first chip is connected to the gate of the first switch tube;

[0027] The output pin of the first chip is connected to the source of the first switch tube, the cathode of the first unidirectional transient suppression diode, the first end of the fourth capacitor, and the anode of the first diode;

[0028] An anode of the first unidirectional transient suppression diode and a second end of the fourth capacitor are grounded;

[0029] The first chip is used to send a control signal to the gate of the first switch tube through its control pin when the voltage difference between its voltage input pin and the detection pin exceeds a preset threshold, so as to control the drain and source of the first switch tube to be disconnected.

[0030] Further, the power receiving module includes: a second anti-reverse connection submodule and a voltage transformation submodule;

[0031] The input end of the second anti-reverse connection submodule is connected to the first end of the first interface module, and the second anti-reverse connection submodule is used to receive the voltage signal transmitted by the first interface module or the power supply module;

[0032] The output end of the second anti-reverse connection submodule is connected to the input end of the voltage transformation submodule;

[0033] The transformer module is used to transform the voltage signal received at its input end to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the in-vehicle Ethernet communication device based on 10BASE-T1S.

[0034] Further, the second anti-reverse connection submodule includes: a second bidirectional transient suppression diode and at least one fifth capacitor;

[0035] A first end of the second bidirectional transient suppression diode is connected to a first end of the fifth capacitor and an input end of the transformer module;

[0036] A second terminal of the second bidirectional transient suppression diode and a second terminal of the fifth capacitor are grounded.

[0037] Further, the transformer submodule includes: a second chip, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first freewheeling diode, a first inductor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor and at least one eleventh capacitor;

[0038] The voltage input pin of the second chip is connected to the first end of the second resistor and the output end of the second anti-reverse connection submodule;

[0039] The enable pin of the second chip is connected to the second end of the second resistor, the first end of the third resistor and the first end of the sixth capacitor;

[0040] A reset clock pin of the second chip is connected to a first end of a fourth resistor;

[0041] The soft start pin of the second chip is connected to the first end of the seventh capacitor;

[0042] The compensation pin of the second chip is connected to the first end of the fifth resistor and the first end of the eighth capacitor, and the second end of the fifth resistor is connected to the first end of the ninth capacitor;

[0043] The start pin of the second chip is connected to the first end of the tenth capacitor;

[0044] The switch pin of the second chip is connected to the second end of the tenth capacitor, the cathode of the first freewheeling diode and the first end of the first inductor;

[0045] The second end of the first inductor is connected to the first end of the sixth resistor and the first end of the eleventh capacitor, and the first end of the eleventh capacitor is used to output a voltage signal of a target voltage value to power a system corresponding to the in-vehicle Ethernet communication device based on 10BASE-T1S;

[0046] The feedback pin of the second chip is connected to the second end of the sixth resistor and the first end of the seventh resistor;

[0047] The second end of the third resistor and the second end of the sixth capacitor, the second end of the fourth resistor, the second end of the seventh capacitor, the second end of the eighth capacitor, the second end of the ninth capacitor, the anode of the first freewheeling diode, the second end of the eleventh capacitor and the second end of the seventh resistor are grounded.

[0048] Further, the circuit protection module includes: an electrostatic tube, a common mode inductor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, an eighth resistor, a ninth resistor, a second inductor and a third inductor;

[0049] The first end of the electrostatic tube is connected to the first input end of the common mode inductor, the second end of the electrostatic tube is connected to the second input end of the common mode inductor, and the first end and the second end of the electrostatic tube are both connected to the second end of the communication module;

[0050] The first output end of the common mode inductor is connected to the first end of the twelfth capacitor, and the second output end of the common mode inductor is connected to the first end of the thirteenth capacitor;

[0051] The second end of the twelfth capacitor is connected to the first end of the eighth resistor, the first end of the second inductor, and the first end of the first interface module;

[0052] The second end of the second inductor is connected to the first end of the fourteenth capacitor, the output end of the power supply module and the input end of the power receiving module;

[0053] The second end of the eighth resistor is connected to the first end of the fifteenth capacitor;

[0054] The second end of the thirteenth capacitor is connected to the first end of the ninth resistor, the first end of the third inductor, and the first end of the first interface module;

[0055] The second end of the ninth resistor is connected to the first end of the sixteenth capacitor;

[0056] The third end of the electrostatic tube is grounded, and the second end of the fourteenth capacitor, the second end of the third inductor, the second end of the fifteenth capacitor and the second end of the sixteenth capacitor are grounded.

[0057] In a second aspect, an embodiment of the present application provides a vehicle, comprising the 10BASE-T1S-based vehicle Ethernet communication device described in the first aspect.

[0058] The in-vehicle Ethernet communication device based on 10BASE-T1S provided in the embodiment of the present application includes a controller, a communication module, a circuit protection module, a power supply module, a power receiving module, a first interface module and a second interface module. The controller is connected to the first end of the communication module, the second end of the communication module is connected to the first end of the protection circuit module, the second end of the circuit protection module is connected to the first end of the first interface module, the output end of the power supply module and the input end of the power receiving module, the input end of the power supply module is connected to the first end of the second interface module, and the second end of the second interface module is used to access the voltage signal. The power supply module is used to transmit the voltage signal to the first end of the first interface module and the input end of the power receiving module when the voltage signal is connected to the input end of the power supply module; the second end of the first interface module is used to connect to the second end of the first interface module of at least one first vehicle-mounted Ethernet communication device, and the first interface module is used to transmit the voltage signal to the input end of the power receiving module when receiving the voltage signal transmitted by the first vehicle-mounted Ethernet communication device connected to it; the first interface module is also used to transmit the voltage signal to the first vehicle-mounted Ethernet communication device connected to it when receiving the voltage signal transmitted by the power supply module; the power receiving module is used to transform the voltage signal it receives to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the vehicle-mounted Ethernet communication device based on 10BASE-T1S. By adopting the above-mentioned technical means, by simultaneously setting a power supply module and a power receiving module in a vehicle-mounted Ethernet communication device based on 10BASE-T1S, the vehicle-mounted Ethernet communication device based on 10BASE-T1S can be used as a power supply device or as a power receiving device when cascading. When producing and assembling Ethernet devices, unified design and production can be performed. During subsequent assembly, it can be assembled as a power supply device or a power receiving device according to actual needs, thereby avoiding the problem of low production and assembly work efficiency. Based on the unified design and production, the overall work efficiency of design and production is greatly improved, and during assembly, it can be assembled as a power supply device or a power receiving device according to actual needs. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this example does not need to distinguish the product form during assembly, and can be directly assembled, which can greatly improve the assembly work efficiency. Therefore, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this embodiment can improve the overall work efficiency of production and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a structural schematic diagram of a 10BASE-T1S-based in-vehicle Ethernet communication device provided in an embodiment of the present application;

[0060] Figure 2 It is a schematic diagram of cascading a vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in an embodiment of the present application;

[0061] Figure 3 is a circuit diagram of a power supply module provided in an embodiment of the present application;

[0062] Figure 4 is a circuit diagram of a power receiving module provided in an embodiment of the present application;

[0063] Figure 5 It is a circuit diagram of a circuit protection module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only part of the present application is shown in the accompanying drawings, but not all of the content. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0065] When the in-vehicle Ethernet communication devices are cascaded, one of the Ethernet communication devices is used as the power supply device, the power supply current is connected, and the corresponding DC current is output to the other Ethernet communication device, which is used as the powered device. The existing Ethernet communication devices used as power supply devices and Ethernet communication devices used as powered devices have different internal circuit settings based on the power supply functions and power receiving functions implemented. Therefore, the Ethernet communication devices used as power supply devices and the Ethernet communication devices used as powered devices need to be designed, produced and assembled separately, which makes the production and assembly work efficiency low.

[0066] In the prior art, in-vehicle Ethernet communication equipment usually uses the idle core of the network cable as the power supply wire in the form of a bus. There is no IC supervision and management unit, and there is no current limiting and anti-reverse connection device for the power supply equipment. When directly supplying DC power, the power supply equipment will not be able to provide a stable voltage signal for the powered device, and the powered device cannot perform voltage stabilization, making the system unstable and affecting the user experience. In addition, due to the thin core of the network cable and the large voltage drop, the existing in-vehicle Ethernet communication equipment is based on the fact that the powered device is not equipped with a voltage stabilization device, so that the system often works in an undervoltage or overvoltage state, which will inevitably shorten the working life of the powered device; at the same time, when the cascaded device is hot-plugged under power, the power supply equipment is easily damaged due to the lack of surge current limitation and input voltage monitoring. Therefore, the operating reliability of the existing in-vehicle Ethernet communication equipment is poor.

[0067] Based on this, an in-vehicle Ethernet communication device and a vehicle based on 10BASE-T1S according to an embodiment of the present application are provided to solve the problem of low efficiency in the production and assembly of existing in-vehicle Ethernet communication devices. The 10BASE-T1S-based vehicle Ethernet communication device provided in the present application simultaneously sets a power supply module and a power receiving module in the 10BASE-T1S-based vehicle Ethernet communication device, so that the 10BASE-T1S-based vehicle Ethernet communication device can be used as a power supply device or a power receiving device when cascading. When producing and assembling Ethernet devices, they can be designed and produced in a unified manner. During subsequent assembly, they can be assembled as power supply devices or power receiving devices according to actual needs, thereby avoiding the problem of low production and assembly work efficiency. Based on the unified design and production, the overall work efficiency of design and production is greatly improved, and during assembly, they can be assembled as power supply devices or power receiving devices according to actual needs. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the 10BASE-T1S-based vehicle Ethernet communication device provided in this example does not need to distinguish between product forms during assembly, and can be directly assembled, which can greatly improve the assembly work efficiency. Therefore, the 10BASE-T1S-based vehicle Ethernet communication device provided in this embodiment can improve the overall work efficiency of production and assembly.

[0068] In addition, a 10BASE-T1S-based vehicle Ethernet communication device and a vehicle according to an embodiment of the present application are provided to solve the problem of poor operational reliability of existing vehicle Ethernet communication devices. The 10BASE-T1S-based vehicle Ethernet communication device provided by the present application performs voltage limiting control on the power input through the power supply module, which can fully protect the current power limitation of the 10BASE-T1S-based vehicle Ethernet communication device when used as a power supply device, and avoid short-circuit or overload damage to the power receiving device, thereby improving the operational reliability of the 10BASE-T1S-based vehicle Ethernet communication device.

[0069] The 10BASE-T1S-based in-vehicle Ethernet communication device provided in this embodiment is an in-vehicle Ethernet communication device that communicates based on the 10BASE-T1S standard. The 10BASE-T1S standard is part of the IEEE 802.3cg standard, which specifically defines the physical layer specifications on a single-pair Ethernet twisted pair, supports a data rate of up to 10Mbps for a single twisted pair, is suitable for half-duplex networks up to 25 meters long, and adopts a multi-point topology bus structure, supporting at least 8 devices (i.e., in-vehicle Ethernet communication devices) to communicate through the same pair of cables. With the rapid development of automotive domain control, the requirements for bus bandwidth and wiring are getting higher and higher. The introduction of the 10BASE-T1S standard in this embodiment can simplify the various communication protocols (such as CAN, LIN, and Ethernet, etc.) in the existing in-vehicle architecture, reduce the use of gateways and the conversion between communication protocols, thereby reducing costs and simplifying software and wiring harness design.

[0070] Figure 1 is a schematic diagram of the structure of a 10BASE-T1S-based vehicle Ethernet communication device provided in an embodiment of the present application, referring to Figure 1The in-vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment specifically includes a controller 11, a communication module 12, a circuit protection module 13, a power supply module 14, a power receiving module 15, a first interface module 16 and a second interface module 17. The controller 11 is connected to the first end of the communication module 12, and the second end of the communication module 12 is connected to the first end of the circuit protection module 13. The second end of the circuit protection module 13 is connected to the first end of the first interface module 16, the output end of the power supply module 14 and the input end of the power receiving module 15. The input end of the power supply module 14 is connected to the first end of the second interface module 17, and the second end of the second interface module 17 is used to access the voltage signal. The power supply module 14 is used to transmit the voltage signal to the first end of the first interface module 16 and the input end of the power receiving module 15 when the voltage signal is accessed at its input end. The second end of the first interface module 16 is used to connect with the second end of the first interface module 16 of at least one first vehicle Ethernet communication device (i.e., other vehicle Ethernet communication devices 1 based on 10BASE-T1S). The first interface module 16 is used to transmit the voltage signal to the input end of the power receiving module 15 when receiving the voltage signal transmitted by the first vehicle Ethernet communication device connected thereto (i.e., other vehicle Ethernet communication devices 1 based on 10BASE-T1S). The first vehicle Ethernet communication device (i.e., other vehicle Ethernet communication devices 1 based on 10BASE-T1S) has the same structural setting as the vehicle Ethernet communication device 1 based on 10BASE-T1S. It should be noted that when the vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment is used as a power receiving device, it is referred to as the first vehicle Ethernet communication device. Its actual structural setting is exactly the same as the vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment. It is called the first vehicle Ethernet communication device only to distinguish it as a power receiving device. The first interface module 16 is also used to transmit the voltage signal to the first vehicle Ethernet communication device connected thereto when receiving the voltage signal transmitted by the power supply module 14. The power receiving module 15 is used to transform the voltage signal received at its input end to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0071] As described above, by simultaneously providing the power supply module 14 and the power receiving module 15 in the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S, the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S can be used as a power supply device or as a power receiving device when cascading. When producing and assembling the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S, the design and production can be unified. In the subsequent assembly, it can be assembled as a power supply device or a power receiving device according to actual needs, thereby avoiding the problem of low production and assembly work efficiency. Based on the unified design and production, the equipment efficiency is greatly improved. The overall work efficiency of design and production is improved, and it can be assembled as a power supply device or a power receiving device according to actual needs during assembly. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S provided in this example does not need to distinguish the product form during assembly, and can be directly assembled, which can greatly improve the work efficiency of assembly. Therefore, the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment can improve the overall work efficiency of production and assembly.

[0072] In one embodiment, the communication module 12 is a 10BASE-T1S communication module, so the circuit protection module 13 is connected to the first interface module 16 via a 10BASE-T1S signal line, and the first interface module 16 is connected to the first interface module 16 of other 10BASE-T1S-based vehicle Ethernet communication devices 1 (i.e., the first vehicle Ethernet communication device) via a 10BASE-T1S signal line.

[0073] Figure 2 This is a schematic diagram of a cascade connection of an in-vehicle Ethernet communication device based on 10BASE-T1S provided in an embodiment of the present application, referring to Figure 1 and 2When the in-vehicle Ethernet communication devices 1 based on 10BASE-T1S are cascaded, one of the in-vehicle Ethernet communication devices 1 based on 10BASE-T1S provided in this embodiment is used as the power supply device 1A, and at least one in-vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment is used as the powered device 1B or the powered device 1C. When cascading, the first interface module 16 of the power supply device 1A is connected to the first interface module 16 of the powered device 1B or the powered device 1C, and the power supply device 1A receives the voltage signal (i.e., the power input signal) through its second interface module 17, and after the corresponding current limiting processing is performed by the power supply module 14, it is transmitted to the first interface module 16 and the powered module 15, wherein the powered module 15 transforms the received voltage signal to obtain a voltage signal of a target voltage value, and outputs the voltage signal of the target voltage value to the system (the system corresponding to the power supply device 1A) to power the system. Based on the connection between the first interface module 16 of the power supply device and the first interface module 16 of the powered device 1B or the powered device 1C, after the transmission voltage signal of the power supply device 1A is transmitted to the first interface module 16, it is transmitted to the powered module 15 of the powered device 1B or the powered device 1C through the first interface module 16 of the powered device 1B or the powered device 1C. The powered module 15 of the powered device 1B or the powered device 1C transforms the received voltage signal to obtain a voltage signal of a target voltage value, and outputs the voltage signal of the target voltage value to the system (the system corresponding to the powered device 1B or the powered device 1C) to power the system. Through the above embodiment, the first interface module 16 of the power supply device 1A can be connected to the first interface module 16 of the powered device 1B or the powered device 1C (i.e., at least one powered device) to power the powered device 1B or the powered device 1C through the first interface module 16, thereby realizing cascade power supply.As described above, by simultaneously providing the power supply module 14 and the power receiving module 15 in the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S, the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S can be used as a power supply device or as a power receiving device when cascading. When producing and assembling the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S, the design and production can be unified. In the subsequent assembly, it can be assembled as a power supply device or a power receiving device according to actual needs, thereby avoiding the problem of low production and assembly work efficiency. Based on the unified design and production, the equipment efficiency is greatly improved. The overall work efficiency of design and production is improved, and it can be assembled as a power supply device or a power receiving device according to actual needs during assembly. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S provided in this example does not need to distinguish the product form during assembly, and can be directly assembled, which can greatly improve the work efficiency of assembly. Therefore, the vehicle-mounted Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment can improve the overall work efficiency of production and assembly.

[0074] In one embodiment, the communication module 12 is a 10BASE-T1S communication module, so the circuit protection module 13 is connected to the first interface module 16 via a 10BASE-T1S signal line. The first interface module 16 of the power supply device is connected to the first interface module 16 of the powered device via a 10BASE-T1S signal line.

[0075] Reference Figure 1 The in-vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment also includes a first diode D1. The anode of the first diode D1 is connected to the output end of the power supply module 14 and the first interface module 16, and the cathode of the first diode D1 is connected to the first end of the first interface module 16. By arranging the first diode D1 after the power supply module 14, voltage stabilization and backflow prevention functions are achieved. When the in-vehicle Ethernet communication device 1 based on 10BASE-T1S acts as a powered device, after receiving the voltage signal transmitted by the corresponding power supply device (the in-vehicle Ethernet communication device 1 based on 10BASE-T1S acts as the power supply device) through the first interface module 16, the voltage signal is prevented from backflowing to the power supply module 14 and causing damage to the power supply module 14, thereby protecting the power supply module 14, and further improving the overall operation stability and reliability of the in-vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0076] Reference Figure 1The power supply module 14 in the vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment includes a first anti-reverse connection submodule 141 and a current limiting submodule 142. The first end of the first anti-reverse connection submodule 141 is connected to the first end of the second interface module 17, the second end of the first anti-reverse connection submodule 141 is connected to the first end of the current limiting submodule 142, and the third end of the first anti-reverse connection submodule 141 is grounded. The second end of the current limiting submodule 142 is connected to the anode of the first diode D1. As described above, by setting the first anti-reverse connection submodule 141 in the power supply module 14, the anti-reverse connection function is realized to prevent the current from flowing back, thereby protecting the circuit, and then improving the power supply reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. In addition, by setting the current limiting submodule 142, the surge current can be effectively controlled, the voltage drop loss on the signal line can be reduced, and the power supply reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S can be further improved.

[0077] Figure 3 is a circuit diagram of a power supply module provided in an embodiment of the present application, referring to Figure 1 and Figure 3The first anti-reverse connection submodule 141 in the power supply module 14 provided in this embodiment includes a rectifier bridge BR, a first bidirectional transient suppression diode d11 and at least one first capacitor C1. The first end of the first capacitor C1 is connected to the first end of the first bidirectional transient suppression diode d11, the positive AC input terminal of the rectifier bridge BR and the first end of the second interface module 17. The second end of the first capacitor C1 is connected to the second end of the first bidirectional transient suppression diode d11, the negative AC input terminal of the rectifier bridge BR and the first end of the second interface module 17. The positive DC output terminal of the rectifier bridge BR is connected to the first end of the current limiting submodule 142, and the negative DC output terminal of the rectifier bridge BR is grounded. Among them, the first capacitor C1 is a filter capacitor. In this embodiment, two first capacitors C1 are set in parallel for filtering as an example. By setting two first capacitors C1 in parallel to realize the filtering function, the quality of the voltage signal transmitted to the positive end of the AC input of the rectifier bridge BR can be improved, so as to improve the subsequent rectification effect of the rectifier bridge BR, and then the stability of the output voltage signal of the first anti-reverse connection submodule 141 can be improved, and the transmission stability of the voltage signal of the vehicle Ethernet communication device 1 based on 10BASE-T1S can be improved. The first bidirectional transient suppression diode d11 realizes the surge protection function, which can effectively control the surge current, reduce the voltage drop loss on the signal line, and further improve the power supply reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. The rectifier bridge BR is composed of four second diodes, which play a role in preventing reverse connection, preventing the reverse voltage signal from damaging the components in the circuit, thereby improving the safety of the vehicle Ethernet communication device 1 based on 10BASE-T1S, and then improving the operation reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0078] Reference Figure 1 and Figure 3The current limiting submodule 142 in the power supply module 14 provided in this embodiment includes a first chip U1, a resistor unit r1, a first resistor R1, a first switch tube Q1, a first unidirectional transient suppression diode d21, a second capacitor C2, a third capacitor C3 and at least one fourth capacitor C4. The voltage input pin (VIN) of the first chip U1 is connected to the first end of the resistor unit r1, the first end of the second capacitor C2, the first end of the first resistor R1 and the DC output positive terminal of the rectifier bridge BR. The undervoltage lockout pin (EN / UVLO) of the first chip U1 is connected to the second end of the resistor unit r1, and the overvoltage lockout pin (OVLO) of the first chip U1 is connected to the third end of the resistor unit r1 and the first end of the third capacitor C3. The fourth end of the resistor unit r1, the second end of the second capacitor C2 and the second end of the third capacitor C3 are grounded. The detection pin (SENSE) of the first chip U1 is connected to the second end of the first resistor R1 and the drain (D) of the first switch tube Q1. The control pin (GATE) of the first chip U1 is connected to the gate (G) of the first switch tube Q1. The output pin (OUT) of the first chip U1 is connected to the source (S) of the first switch tube Q1, the cathode of the first unidirectional transient suppression diode d21, the first end of the fourth capacitor C4, and the anode of the first diode D1. The anode of the first unidirectional transient suppression diode d21 and the second end of the fourth capacitor C4 are grounded. The first chip U1 is used to send a control signal to the gate (G) of the first switch tube Q1 through its control pin (GATE) when the voltage difference between its voltage input pin (VIN) and the detection pin (SENSE) exceeds a preset threshold value, so as to control the drain (D) and the source (S) of the first switch tube Q1 to disconnect. Among them, the first unidirectional transient suppression diode d21 realizes the surge protection function, can effectively control the surge current, reduce the voltage drop loss on the signal line, and further improve the power supply reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. The fourth capacitor C4 is a filter capacitor. Multiple fourth capacitors C4 are arranged in parallel to achieve a filtering function, thereby improving the quality of the voltage signal output by the second end of the current limiting submodule 142, and further improving the overall stability of the voltage signal transmission of the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0079] In one embodiment, the first chip U1 is a positive heat exchange control chip, which can effectively control the surge current and reduce the voltage drop loss on the 10BASE-T1S signal line, thereby improving the power supply reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. Figure 3, the resistance unit r1 includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12 and a thirteenth resistor R13. The first end of the tenth resistor R10 and the first end of the eleventh resistor R11 are connected to the voltage input pin (VIN) of the first chip U1; the second end of the tenth resistor R10 and the first end of the twelfth resistor R12 are connected to the undervoltage lockout pin (EN / UVLO) of the first chip U1. The second end of the eleventh resistor R11 and the first end of the thirteenth resistor R13 are connected to the overvoltage lockout pin (OVLO) of the first chip U1. The second end of the twelfth resistor R12 and the second end of the thirteenth resistor R13 are grounded. As mentioned above, the current limiting submodule 142 has an undervoltage lockout function, an overvoltage lockout function, a current limiting function and a power limiting function. Among them, according to the preset parameters corresponding to the first chip U1, the voltage range of the undervoltage lockout function is set to 22.5V~23.5V, the resistance value of the tenth resistor R10 is set to R10=(23.5-22.5)V / 19μA≈47kΩ; the resistance value of the twelfth resistor R12 is set to R11=2.5×R10 / (22.5-2.5)≈4.42kΩ, wherein parameters such as 23V, 22.5V, 19μA and 2.5V are obtained from the preset parameters corresponding to the first chip U1. The voltage range of the overvoltage lockout function is set to 28V~29V, so the resistance value of the eleventh resistor R11 is set to R11=(29-28)V / 19μA≈47kΩ; the resistance value of the thirteenth resistor R13 is set to R13=2.5xR11 / (29-2.5)≈6.2kΩ, where the parameters such as 29V, 28V, 19μA and 2.5V are obtained from the preset parameters corresponding to the first chip U1. The first resistor R1 is a current limiting resistor. When the voltage drop across the first resistor R1 exceeds 55mV, the current protection is triggered. The current limit provided in this embodiment is 3A, the maximum power of the powered device is 24W×3=72W, and the resistance value of the first resistor R1 is set to R3=55V / 3A=0.018Ω, where the parameters such as 24W, 55V and 3A are obtained from the preset parameters corresponding to the first chip U1.

[0080] Figure 4 is a circuit diagram of a power receiving module provided in an embodiment of the present application, referring to Figure 1 and Figure 4The power receiving module 15 in the in-vehicle Ethernet communication device 1 based on 10BASE-T1S provided in this embodiment includes a second anti-reverse connection submodule 151 and a transformer submodule 152. The input end of the second anti-reverse connection submodule 151 is connected to the first end of the first interface module 16, and the second anti-reverse connection submodule 151 is used to receive the voltage signal transmitted by the first interface module 16 or the power supply module 14. The output end of the second anti-reverse connection submodule 151 is connected to the input end of the transformer submodule 152. The transformer submodule 152 is used to transform the voltage signal received at its input end to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the in-vehicle Ethernet communication device 1 based on 10BASE-T1S. As described above, a second anti-reverse connection submodule 151 is provided in the power receiving module 15 to prevent the reverse voltage signal from damaging the components in the circuit, thereby improving the safety of the vehicle Ethernet communication device 1 based on 10BASE-T1S, and further improving the operating reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0081] Reference Figure 4 , the second anti-reverse connection submodule 151 provided in this embodiment includes a second bidirectional transient suppression diode d12 and at least one fifth capacitor C5. The first end of the second bidirectional transient suppression diode d12 is connected to the first end of the fifth capacitor C5 and the input end of the transformer submodule 152. The second end of the second bidirectional transient suppression diode d12 is grounded to the second end of the fifth capacitor C5. Among them, the fifth capacitor C5 is a filter capacitor. In this embodiment, three fifth capacitors C5 are set in parallel for filtering as an example. By setting three fifth capacitors C5 in parallel to realize the filtering function, the quality of the voltage signal transmitted to the transformer submodule 152 can be improved, thereby improving the stability of the output voltage signal of the second anti-reverse connection submodule 151, and further improving the stability of the transmission of the voltage signal of the vehicle Ethernet communication device 1 based on 10BASE-T1S. The second bidirectional transient suppression diode d12 realizes the surge protection function, can effectively control the surge current, reduce the voltage drop loss on the (10BASE-T1S) signal line, and further improve the power supply reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0082] Reference Figure 4, the transformer submodule 152 provided in this embodiment includes a second chip U2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first freewheeling diode d22, a first inductor L1, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10 and at least one eleventh capacitor C11. The voltage input pin (VIN) of the second chip U2 is connected to the first end of the second resistor R2 and the output end of the second anti-reverse connection submodule 151 (i.e., the first end of the fifth capacitor C5). The enable pin (EN) of the second chip U2 is connected to the second end of the second resistor R2, the first end of the third resistor R3 and the first end of the sixth capacitor C6. The reset clock pin (RT / CLK) of the second chip U2 is connected to the first end of the fourth resistor R4. The soft start pin (SS / TR) of the second chip U2 is connected to the first end of the seventh capacitor C7. The compensation pin (COMP) of the second chip U2 is connected to the first end of the fifth resistor R5 and the first end of the eighth capacitor C8, and the second end of the fifth resistor R5 is connected to the first end of the ninth capacitor C9. The startup pin (BOOT) of the second chip U2 is connected to the first end of the tenth capacitor C10. The switch pin (SW) of the second chip U2 is connected to the second end of the tenth capacitor C10, the cathode of the first freewheeling diode d22, and the first end of the first inductor L1. The second end of the first inductor L1 is connected to the first end of the sixth resistor R6 and the first end of the eleventh capacitor C11, and the first end of the eleventh capacitor C11 is used to output a voltage signal of a target voltage value to power the system corresponding to the vehicle Ethernet communication device 1 based on 10BASE-T1S. The feedback pin (FB) of the second chip U2 is connected to the second end of the sixth resistor R6 and the first end of the seventh resistor R7. The second end of the third resistor R3 and the second end of the sixth capacitor C6, the second end of the fourth resistor R4, the second end of the seventh capacitor C7, the second end of the eighth capacitor C8, the second end of the ninth capacitor C9, the anode of the first freewheeling diode d22, the second end of the eleventh capacitor C11 and the second end of the seventh resistor R7 are grounded. As described above, the second resistor R2 and the third resistor R3 form a voltage divider resistor to enable the enable pin (EN) of the second chip U2. The voltage of the enable pin (EN) of the second chip U2 can be set within a preset range through the voltage divider resistor, which helps to ensure that the second chip U2 works at a stable voltage and avoids unstable output or damage caused by voltage fluctuations, thereby improving the operating stability and reliability of the second chip U2, and further improving the overall stability and reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S.The fifth resistor R5, the eighth capacitor C8 and the ninth capacitor C9 form an RC compensation circuit. The RC compensation circuit can eliminate self-oscillation, so that the response of the signal within a certain frequency band is more stable and accurate, thereby improving the accuracy and stability of the compensation signal received by the compensation pin (COMP) of the second chip U2, and further improving the control stability and reliability of the second chip U2. Through the cooperation of the first freewheeling diode d22 and the first inductor L1, when the current of the first inductor L1 suddenly changes or decreases, a sudden voltage (reverse electromotive force) will be generated across the first inductor L1, which may damage other components; the first freewheeling diode d22 provides a low impedance path, so that the current can change more smoothly, avoiding the occurrence of sudden voltage, thereby protecting the components in the circuit from damage, which can improve the operation stability and reliability of the transformer module 152, and further improve the overall operation stability and reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. The voltage value of the output voltage signal is determined by the sixth resistor R6 and the seventh resistor R7. Therefore, by controlling the voltage values ​​of the sixth resistor R6 and the seventh resistor R7, the voltage value of the corresponding output voltage signal can be controlled to be a preset target voltage value. For example, if the target voltage value is 5V, the corresponding voltage values ​​of the sixth resistor R6 and the seventh resistor R7 can be determined according to the formula Vout=0.8+0.8xR6 / R7=5V. In addition, the eleventh capacitor C11 is a filter capacitor. In this embodiment, five eleventh capacitors C11 are set in parallel for filtering as an example. By filtering the voltage signal output by at least one eleventh capacitor C11, the quality of the voltage signal of the target voltage value output by the transformer submodule 152 can be improved, thereby improving the reliability of the voltage signal output by the transformer submodule 152, and further improving the reliability of the voltage signal output by the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0083] Figure 5 is a circuit diagram of a circuit protection module provided in an embodiment of the present application, referring to Figure 1 and Figure 5The circuit protection module 13 provided in this embodiment includes an electrostatic tube ESD1, a common mode inductor L1, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth capacitor C16, an eighth resistor R8, a ninth resistor R9, a second inductor L2 and a third inductor L3. The first end of the electrostatic tube ESD1 is connected to the first input end of the common mode inductor L1, the second end of the electrostatic tube ESD1 is connected to the second input end of the common mode inductor L1, and the first end and the second end of the electrostatic tube ESD1 are both connected to the second end of the communication module 12. The first output end of the common mode inductor L1 is connected to the first end of the twelfth capacitor C12, and the second output end of the common mode inductor L1 is connected to the first end of the thirteenth capacitor C13. The second end of the twelfth capacitor C12 is connected to the first end of the eighth resistor R8, the first end of the second inductor L2 and the first end of the first interface module 16. The second end of the second inductor L2 is connected to the first end of the fourteenth capacitor C14, the output end of the power supply module 14 (or the cathode of the first diode D1) and the input end of the power receiving module 15. The second end of the eighth resistor R8 is connected to the first end of the fifteenth capacitor C15. The second end of the thirteenth capacitor C13 is connected to the first end of the ninth resistor R9, the first end of the third inductor L3 and the first end of the first interface module 16. The second end of the ninth resistor R9 is connected to the first end of the sixteenth capacitor C16. The third end of the electrostatic tube ESD1 is grounded and the second end of the fourteenth capacitor C14, the second end of the third inductor L3, the second end of the fifteenth capacitor C15 and the second end of the sixteenth capacitor C16 are grounded. As described above, the electrostatic tube ESD1 and the common mode inductor l1 can effectively prevent interference caused by the insertion interface (that is, when the first interface module 16 is connected to other vehicle Ethernet communication devices 1 based on 10BASE-T1S), thereby improving the operating stability and reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. The twelfth capacitor C12 and the thirteenth capacitor C13 form a DC blocking capacitor to prevent the DC voltage from entering the communication module 12 and damaging the components, which can provide an important guarantee for the vehicle Ethernet communication device 1 based on 10BASE-T1S to power the signal line, so that the vehicle Ethernet communication device 1 based on 10BASE-T1S can be used as a power supply device or a power receiving device when cascaded, thereby improving the functional configuration flexibility and reliability of the vehicle Ethernet communication device 1 based on 10BASE-T1S. The RC discharge circuit is formed by the eighth resistor R8, the ninth resistor R9, the fifteenth capacitor C15 and the sixteenth capacitor C16, which can effectively filter out signal noise.The second inductor L2 and the third inductor L3 play the role of passing low frequencies and blocking high frequencies. Since the signal frequency of 10BASE-T1S is 12.5MHz, the second inductor L2 and the third inductor L3 can effectively prevent the signal from flowing to GND, so as not to interfere with the communication of the signal, thereby improving the communication reliability and stability of the vehicle Ethernet communication device 1 based on 10BASE-T1S, so that the vehicle Ethernet communication device 1 based on 10BASE-T1S can be powered by the signal line on the basis of the communication function, thereby improving the functional diversity of the vehicle Ethernet communication device 1 based on 10BASE-T1S.

[0084] As described above, the 10BASE-T1S-based vehicle Ethernet communication device provided by this embodiment can communicate through the 10BASE-T1S bus-type vehicle Ethernet technology, and can cascade multiple 10BASE-T1S-based vehicle Ethernet communication devices, simplify the interface and wiring, and can effectively power a single pair of cables of the 10BASE-T1S-based vehicle Ethernet communication device, and connect to the existing multi-bus to achieve cascading. The wire wiring of this embodiment is further simplified, thereby reducing the cost investment in production and assembly.

[0085] As mentioned above, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this embodiment has a power supply module and a power receiving module. Through the ingenious anti-reverse connection and power supply design, the vehicle-mounted Ethernet communication device based on 10BASE-T1S can be used as both a power supply device and a power receiving device. When producing and assembling Ethernet devices, unified design and production can be performed. During subsequent assembly, it can be assembled as a power supply device or a power receiving device according to actual needs, thereby avoiding the problem of low production and assembly efficiency. Based on the unified design and production, the overall work efficiency of design and production is greatly improved, and during assembly, it can be assembled as a power supply device or a power receiving device according to actual needs. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this example does not need to distinguish the product form during assembly, and can be directly assembled, which can greatly improve the assembly work efficiency. Therefore, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this embodiment can improve the overall work efficiency of production and assembly.

[0086] As mentioned above, the power supply module has undervoltage lockout function, overvoltage lockout function, current limiting function and power limiting function, which can limit the voltage of the power input and fully protect the current power limit when used as a power supply device to avoid short circuit or overload damage to the powered device, thereby improving the overall stability and safety of the cascade. By setting the maximum output power of the power supply module to 72W, the cascade of at least 8 powered devices on the 10BASE-T1S bus can be met, and the cascade of a large number of powered devices can be met, thereby improving the user experience.

[0087] As described above, the 10BASE-T1S high-frequency signal and the low-frequency signal of the power supply are effectively isolated by the second inductor and the third inductor in the circuit protection module, and the necessary signal protection circuit is designed at the signal end, so that the stability and reliability of the system can be improved while stabilizing the power supply or receiving.

[0088] As described above, by simultaneously providing a power supply module and a power receiving module in a vehicle-mounted Ethernet communication device based on 10BASE-T1S, the vehicle-mounted Ethernet communication device based on 10BASE-T1S can be used as a power supply device or as a power receiving device when cascading. When producing and assembling Ethernet devices, unified design and production can be performed. During subsequent assembly, it can be assembled as a power supply device or a power receiving device according to actual needs, thereby avoiding the problem of low production and assembly efficiency. Based on the unified design and production, the overall work efficiency of design and production is greatly improved, and during assembly, it can be assembled as a power supply device or a power receiving device according to actual needs. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this example does not need to distinguish the product form during assembly, and can be directly assembled, which can greatly improve the assembly work efficiency. Therefore, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this embodiment can improve the overall work efficiency of production and assembly.

[0089] Based on the above embodiments, an embodiment of the present application provides a vehicle, including the aforementioned 10BASE-T1S-based in-vehicle Ethernet communication device. In the vehicle, the Ethernet device provided in this embodiment can be cascaded, and a power supply module and a power receiving module are simultaneously provided in the vehicle-mounted Ethernet communication device based on 10BASE-T1S, so that the vehicle-mounted Ethernet communication device based on 10BASE-T1S can be used as a power supply device or a power receiving device when cascading. When producing and assembling Ethernet devices, unified design and production can be carried out. When assembling in the vehicle, it can be assembled as a power supply device or a power receiving device according to actual needs, thereby avoiding the problem of low production and assembly efficiency. Based on the unified design and production, the overall work efficiency of design and production is greatly improved, and it can be assembled as a power supply device or a power receiving device according to actual needs. Compared with the existing vehicle-mounted Ethernet communication device as a power supply device and the vehicle-mounted Ethernet communication device as a power receiving device, which need to be designed and produced separately, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this example does not need to distinguish the product form when assembling, and can be directly assembled, which can greatly improve the assembly work efficiency. Therefore, the vehicle-mounted Ethernet communication device based on 10BASE-T1S provided in this embodiment can improve the overall work efficiency of production and assembly.

[0090] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0091] In this application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0093] It should be noted that, in the present application, unless otherwise clearly specified and limited, the first feature being “above” or “below” the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being “above”, “above” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal surface height of the first feature is higher than that of the second feature. The first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal surface height of the first feature is lower than that of the second feature.

[0094] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and application concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A 10BASE-T1S-based vehicle Ethernet communication device, characterized in that: include: A controller, a communication module, a circuit protection module, a power supply module, a power receiving module, a first interface module and a second interface module; The controller is connected to the first end of the communication module, and the second end of the communication module is connected to the first end of the circuit protection module; The second end of the circuit protection module is connected to the first end of the first interface module, the output end of the power supply module and the input end of the power receiving module; The input end of the power supply module is connected to the first end of the second interface module, and the second end of the second interface module is used to access the voltage signal; Wherein, the power supply module includes a first anti-reverse connection submodule and a current limiting submodule; The first end of the first anti-reverse connection submodule is connected to the first end of the second interface module, the second end of the first anti-reverse connection submodule is connected to the first end of the current limiting submodule, and the third end of the first anti-reverse connection submodule is grounded; The second end of the current limiting submodule is connected to the first end of the first interface module; The power supply module is used for transmitting the voltage signal to the first end of the first interface module and the input end of the power receiving module when the input end thereof is connected to the voltage signal; The second end of the first interface module is used to connect to the second end of the first interface module of at least one first vehicle Ethernet communication device, and the first interface module is used to transmit the voltage signal to the input end of the power receiving module when receiving the voltage signal transmitted by the first vehicle Ethernet communication device connected thereto, and the first vehicle Ethernet communication device has the same structural setting as the vehicle Ethernet communication device based on 10BASE-T1S; the first interface module is also used to transmit the voltage signal to the first vehicle Ethernet communication device connected thereto when receiving the voltage signal transmitted by the power supply module; The power receiving module is used to transform the voltage signal received at its input end to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the in-vehicle Ethernet communication device based on 10BASE-T1S; Wherein, the power receiving module includes: a second anti-reverse connection submodule and a voltage transformation submodule; The input end of the second anti-reverse connection submodule is connected to the first end of the first interface module, and the second anti-reverse connection submodule is used to receive the voltage signal transmitted by the first interface module or the power supply module; The output end of the second anti-reverse connection submodule is connected to the input end of the voltage transformation submodule; The transformer module is used to transform the voltage signal received at its input end to obtain a voltage signal of a target voltage value, and output the voltage signal of the target voltage value through its output end to power the system corresponding to the 10BASE-T1S-based in-vehicle Ethernet communication device.

2. The 10BASE-T1S-based vehicle-mounted Ethernet communication device according to claim 1, characterized in that: Also included is a first diode; An anode of the first diode is connected to the output end of the power supply module, and a cathode of the first diode is connected to the first end of the first interface module.

3. The 10BASE-T1S-based vehicle-mounted Ethernet communication device according to claim 2, characterized in that: The first anti-reverse connection submodule includes: a rectifier bridge, a first bidirectional transient suppression diode and at least one first capacitor; The first end of the first capacitor is connected to the first end of the first bidirectional transient suppression diode, the AC input positive terminal of the rectifier bridge, and the first end of the second interface module; The second end of the first capacitor is connected to the second end of the first bidirectional transient suppression diode, the AC input negative terminal of the rectifier bridge, and the first end of the second interface module; The DC output positive terminal of the rectifier bridge is connected to the first end of the current limiting submodule, and the DC output negative terminal of the rectifier bridge is grounded.

4. The 10BASE-T1S-based vehicle-mounted Ethernet communication device according to claim 3, characterized in that: The current limiting submodule includes: a first chip, a resistance unit, a first resistor, a first switch tube, a first unidirectional transient suppression diode, a second capacitor, a third capacitor and at least one fourth capacitor; The voltage input pin of the first chip is connected to the first end of the resistance unit, the first end of the second capacitor, the first end of the first resistor, and the DC output positive terminal of the rectifier bridge; The undervoltage lockout pin of the first chip is connected to the second end of the resistor unit, and the overvoltage lockout pin of the first chip is connected to the third end of the resistor unit and the first end of the third capacitor; The fourth end of the resistor unit, the second end of the second capacitor, and the second end of the third capacitor are grounded; The detection pin of the first chip is connected to the second end of the first resistor and the drain of the first switch tube; The control pin of the first chip is connected to the gate of the first switch tube; The output pin of the first chip is connected to the source of the first switch tube, the cathode of the first unidirectional transient suppression diode, the first end of the fourth capacitor, and the anode of the first diode; An anode of the first unidirectional transient suppression diode and a second end of the fourth capacitor are grounded; The first chip is used to send a control signal to the gate of the first switch tube through its control pin when the voltage difference between its voltage input pin and the detection pin exceeds a preset threshold, so as to control the drain and source of the first switch tube to be disconnected.

5. The 10BASE-T1S-based vehicle-mounted Ethernet communication device according to claim 1, characterized in that: The second anti-reverse connection submodule includes: a second bidirectional transient suppression diode and at least one fifth capacitor; The first end of the second bidirectional transient suppression diode is connected to the first end of the fifth capacitor and the input end of the transformer submodule; A second end of the second bidirectional transient suppression diode and a second end of the fifth capacitor are grounded.

6. The 10BASE-T1S-based vehicle-mounted Ethernet communication device according to claim 1, characterized in that: The transformer submodule includes: a second chip, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first freewheeling diode, a first inductor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor and at least one eleventh capacitor; The voltage input pin of the second chip is connected to the first end of the second resistor and the output end of the second anti-reverse connection submodule; The enable pin of the second chip is connected to the second end of the second resistor, the first end of the third resistor and the first end of the sixth capacitor; A reset clock pin of the second chip is connected to a first end of the fourth resistor; The soft start pin of the second chip is connected to the first end of the seventh capacitor; The compensation pin of the second chip is connected to the first end of the fifth resistor and the first end of the eighth capacitor, and the second end of the fifth resistor is connected to the first end of the ninth capacitor; The start pin of the second chip is connected to the first end of the tenth capacitor; The switch pin of the second chip is connected to the second end of the tenth capacitor, the cathode of the first freewheeling diode and the first end of the first inductor; The second end of the first inductor is connected to the first end of the sixth resistor and the first end of the eleventh capacitor, and the first end of the eleventh capacitor is used to output a voltage signal of a target voltage value to power a system corresponding to the 10BASE-T1S-based in-vehicle Ethernet communication device; The feedback pin of the second chip is connected to the second end of the sixth resistor and the first end of the seventh resistor; The second end of the third resistor and the second end of the sixth capacitor, the second end of the fourth resistor, the second end of the seventh capacitor, the second end of the eighth capacitor, the second end of the ninth capacitor, the anode of the first freewheeling diode, the second end of the eleventh capacitor and the second end of the seventh resistor are grounded.

7. The 10BASE-T1S-based vehicle-mounted Ethernet communication device according to claim 1, characterized in that: The circuit protection module includes: an electrostatic tube, a common mode inductor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, an eighth resistor, a ninth resistor, a second inductor and a third inductor; The first end of the electrostatic tube is connected to the first input end of the common mode inductor, the second end of the electrostatic tube is connected to the second input end of the common mode inductor, and the first end and the second end of the electrostatic tube are both connected to the second end of the communication module; The first output end of the common mode inductor is connected to the first end of the twelfth capacitor, and the second output end of the common mode inductor is connected to the first end of the thirteenth capacitor; The second end of the twelfth capacitor is connected to the first end of the eighth resistor, the first end of the second inductor and the first end of the first interface module; The second end of the second inductor is connected to the first end of the fourteenth capacitor, the output end of the power supply module and the input end of the power receiving module; The second end of the eighth resistor is connected to the first end of the fifteenth capacitor; The second end of the thirteenth capacitor is connected to the first end of the ninth resistor, the first end of the third inductor and the first end of the first interface module; The second end of the ninth resistor is connected to the first end of the sixteenth capacitor; The third end of the electrostatic tube is grounded, and the second end of the fourteenth capacitor, the second end of the third inductor, the second end of the fifteenth capacitor, and the second end of the sixteenth capacitor are grounded.

8. A vehicle, characterized in that: The vehicle-mounted Ethernet communication device based on 10BASE-T1S comprises any one of claims 1-7.

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