Power supply and reception device and power over ethernet system

Abstract

The embodiment of the present application discloses a power supply device and an Ethernet power supply system. The power supply device comprises a switching module, a first terminal, a second terminal, a power receiving chip and a power supply chip. The switching module has a first connection end, a second connection end, a third connection end and a fourth connection end. The first terminal is electrically connected with the first connection end. The second terminal is electrically connected with the second connection end. The input end of the power receiving chip is electrically connected with the third connection end. The output end of the power receiving chip is used for supplying power to the power supply device. The input end of the power supply chip is connected with the third connection end. The output end of the power supply chip is electrically connected with the fourth connection end. The switching module is used for realizing the switching between the first connection end and the third connection end and the fourth connection end, and the switching between the second connection end and the third connection end and the fourth connection end. The first terminal can be used as a power receiving terminal or a power supply terminal. The second terminal can be used as a power receiving terminal or a power supply terminal. The power supply device has a higher fault tolerance when connecting a network cable.

Description

Technical Field

[0001] This application relates to the field of power supply and receiving technology in communications, and in particular to a power supply and receiving device and an Ethernet power supply system. Background Technology

[0002] Power over Ethernet (PoE) is a technology that transmits data signals to devices that support the Internet Protocol (IP) (hereinafter referred to as IP devices) while simultaneously supplying power to the corresponding IP devices.

[0003] A complete PoE system consists of two PoE devices: a power sourcing equipment (PSE) and a powered device (PD). The PSE and PD are connected via a network cable. Specifically, the PD connects to the PSE through an input interface and receives power from the connected PSE. For example, the PSE can be a main router, and the PD can be a sub-router. Alternatively, the PD can be a terminal device such as an IP phone, IP camera, personal computer (PC), or set-top box.

[0004] In related technologies, multi-cascaded devices have two RJ45 ports. One RJ45 port is a power supply terminal to provide power to other devices, and the other RJ45 port is a power receiving terminal. The power receiving port connects to the upstream device, and the power supply port connects to the downstream device. However, when connecting network cables, users need the nameplates around the RJ45 terminals to distinguish the functions of different RJ45 ports, which can lead to a certain probability of connecting the wrong port. Utility Model Content

[0005] This application provides a power supply and receiving device and an Ethernet power supply system, which can improve the technical problem of easy port misconnection.

[0006] In a first aspect, embodiments of this application provide a power supply and receiving device, which includes a switching module, a first terminal, a second terminal, a power receiving chip, and a power supply chip. The switching module has a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal; the first terminal is electrically connected to the first connection terminal; the second terminal is electrically connected to the second connection terminal; the output terminal of the power receiving chip is used to supply power to the power supply and receiving device; and the input terminal of the power supply chip is connected to the third connection terminal, and the output terminal of the power supply chip is electrically connected to the fourth connection terminal; wherein, the switching module is used to switch between the first connection terminal and the third and fourth connection terminals, and between the second connection terminal and the third and fourth connection terminals.

[0007] In the power supply and receiving device of this application embodiment, since the first connection terminal can be connected to the third connection terminal or the fourth connection terminal, and the second connection terminal can be connected to the third connection terminal or the fourth connection terminal, the first terminal can be used as a power receiving terminal or a power supply terminal, and the second terminal can be used as a power receiving terminal or a power supply terminal. Therefore, the power supply and receiving device has no risk of incorrect port connection when connecting the network cable, and has a high fault tolerance rate.

[0008] In some exemplary embodiments, the power supply and receiving device includes a first connection state and a second connection state. When the first terminal is energized, the power supply and receiving device is in the first connection state, and the first connection end is electrically connected to the third connection end. When the second terminal is energized, the power supply and receiving device is in the second connection state, and the second connection end is electrically connected to the third connection end.

[0009] Based on the above embodiments, the second terminal can be used as either a power receiving terminal or a power supply terminal, thereby enabling the second terminal to flexibly switch functions according to the connected device. Similarly, the first terminal can be used as either a power receiving terminal or a power supply terminal, enabling the first terminal to flexibly switch functions according to the connected device.

[0010] In some exemplary embodiments, when the first terminal is energized, the power supply and receiving device is in the first connection state, the first connection terminal is electrically connected to the third connection terminal, and the second connection terminal is electrically connected to the fourth connection terminal; when the second terminal is energized, the power supply and receiving device is in the second connection state, the second connection terminal is electrically connected to the third connection terminal, and the first connection terminal is electrically connected to the fourth connection terminal.

[0011] Based on the above embodiments, when the first terminal is used as a power receiving terminal, the second terminal is used as a power supply terminal; when the second terminal is used as a power receiving terminal, the first terminal is used as a power supply terminal. This allows the input and output of the first terminal and the second terminal of the power supply and receiving device to be switched. When it is necessary to change the cascade direction of the power supply and receiving device, there is no need to manually replace the crystal head, making the operation relatively simple.

[0012] In some exemplary embodiments, the input terminal of the power supply chip is connected to the third connection terminal.

[0013] Based on the above embodiments, when the first terminal or the second terminal is used as a power receiving terminal, the power receiving chip can be powered through the first terminal or the second terminal, thus eliminating the need for local power supply and making the layout more convenient.

[0014] In some exemplary embodiments, the power supply and receiving device further includes a third connection state, in which the power supply and receiving device is in the third connection state when neither the first terminal nor the second terminal is energized, the first connection terminal is electrically connected to the third connection terminal, and the second connection terminal is electrically connected to the third connection terminal.

[0015] Based on the above embodiments, both the first and second terminals are PDs by default. When one of the first or second terminals receives power, the third connection terminal is energized, and the power receiving chip can supply power to the power supply and receiving device, thereby enabling the power supply and receiving device to be immediately woken up and started, improving the response speed of the power supply and receiving device. The other of the first and second terminals can be switched to PSE to supply power to the next-level power supply and receiving device. When deploying the power supply and receiving device, users do not need to distinguish whether the first and second terminals are used for power supply or power receiving; they can blindly plug in the first and second terminals without causing incorrect port connections, reducing deployment difficulty. Even non-professionals can easily complete the installation, improving the user experience. Of course, in addition to the user stage, there is also no need to distinguish between the first and second terminals during the R&D, production testing, and after-sales stages, improving efficiency at each stage.

[0016] In some exemplary embodiments, the switching module includes: The first switching unit has a first end serving as the first connection end, a second end of the first switching unit being electrically connected to both the input end of the powered chip and the input end of the powered chip, and a third end of the first switching unit being electrically connected to the output end of the powered chip. The second switching unit has a first end serving as the second connection end, a second end being electrically connected to both the input end of the powered chip and the input end of the powered chip, and a third end being electrically connected to the output end of the powered chip. The third connection terminal includes a first sub-terminal and a second sub-terminal, and the fourth connection terminal includes a third sub-terminal and a fourth sub-terminal. When the first terminal is energized, the first switching unit switches to a state where the first terminal is electrically connected to the second terminal, and the second terminal of the first switching unit serves as the first sub-terminal. When the second terminal is energized, the second switching unit switches to a state where the first terminal is electrically connected to the second terminal, and the second terminal of the second switching unit serves as the second sub-terminal. When the first switching unit switches to a state where the first terminal is connected to the third terminal, the third terminal of the first switching unit serves as the fourth sub-terminal.

[0017] Based on the above embodiments, by splitting the switching module into a first switching unit and a second switching unit, the first switching unit is responsible for the function switching of the first terminal, and the second switching unit is responsible for the function switching of the second terminal. The first switching unit and the second switching unit work together to complete complex switching operations. Furthermore, the separate setting of the first switching unit and the second switching unit can improve the fault tolerance rate.

[0018] In some exemplary embodiments, when neither the first terminal nor the second terminal is energized, the first end of the first switching unit is electrically connected to the second end, the first end of the second switching unit is electrically connected to the second end, the second end of the first switching unit serves as the third connection end, and the third end of the first switching unit serves as the fourth connection end. Based on the above embodiments, both the first and second terminals are PDs by default. When one of the first or second terminals receives power, the third connection terminal is energized, and the power receiving chip can supply power to the power supply and receiving device, thereby enabling the power supply and receiving device to be immediately woken up and started, improving the response speed of the power supply and receiving device. The other of the first and second terminals can be switched to PSE to supply power to the next-level power supply and receiving device. When deploying the power supply and receiving device, users do not need to distinguish whether the first and second terminals are used for power supply or power receiving; they can blindly plug in the first and second terminals without causing incorrect port connections, reducing deployment difficulty. Even non-professionals can easily complete the installation, improving the user experience. Of course, in addition to the user stage, there is also no need to distinguish between the first and second terminals during the R&D, production testing, and after-sales stages, improving efficiency at each stage.

[0019] In some exemplary embodiments, the first switching unit includes a first double-pole double-throw switch, the fixed end of the first double-pole double-throw switch serving as the first end of the first switching unit, the normally closed end of the first double-pole double-throw switch serving as the second end of the first switching module, and the normally open end of the first double-pole double-throw switch serving as the third end of the first switching module; and / or, the second switching unit includes a second double-pole double-throw switch, the fixed end of the second double-pole double-throw switch serving as the first end of the second switching unit, the normally closed end of the second double-pole double-throw switch serving as the second end of the second switching module, and the normally open end of the second double-pole double-throw switch serving as the third end of the second switching module.

[0020] Based on the above embodiments, the first double-pole double-throw switch can switch between positive and negative terminals simultaneously, replacing the combination of multiple single-pole switches. This simplifies circuit board design, reduces the number of components, improves reliability, and lowers costs. The "double-pole" design ensures that the power supply pairs can switch synchronously and consistently, avoiding data errors or circuit failures caused by asynchronous switching. The normally open and normally closed contacts of the first double-pole double-throw switch are physically separated, providing good electrical isolation for the power supply and receiving circuits and preventing mutual interference.

[0021] The second double-pole double-throw switch can switch between positive and negative terminals simultaneously, replacing multiple single-pole switches. This simplifies circuit board design, reduces the number of components, improves reliability, and lowers costs. The "double-pole" design ensures that power lines switch synchronously and consistently, preventing data errors or circuit failures caused by asynchronous switching. The normally open and normally closed contacts of the second double-pole double-throw switch are physically separated, providing excellent electrical isolation between the power supply and receiving circuits and preventing mutual interference.

[0022] In some exemplary embodiments, the power supply and receiving device further includes a control module and a transistor. The power receiving terminal of the control module is electrically connected to the output terminal of the power receiving chip. The control terminal of the control module is electrically connected to the transistor. The transistor is connected to the controlled terminal of the first switching unit and the controlled terminal of the second switching unit. The control module can control the switching of the transistor. The transistor can control the first terminal of the first switching unit to switch to conduct with the second terminal or the third terminal, and the transistor can control the first terminal of the second switching unit to switch to conduct with the second terminal or the third terminal.

[0023] Based on the above embodiments, the transistor can be a MOSFET, a bipolar transistor, etc., and the control module can control the first switching unit and the second switching unit through the transistor. The maximum drive capability of the GPIO pin of the control module is typically 5-20mA. As a current amplifier, the control module only needs to provide a very small base / gate current (typically only 1-5mA) to control the transistor, and then the transistor bears the large current required to drive the first switching unit and the second switching unit.

[0024] In some exemplary embodiments, the power supply and receiving device further includes a rectifier module electrically connected between the third connection terminal and the power receiving chip, and the rectifier module is electrically connected between the third connection terminal and the power supply chip, the rectifier module being used for rectification.

[0025] Based on the above embodiments, the rectifier module can improve port polarity compatibility. Regardless of whether the power supply method used at the other end of the network cable is Alternative A (powering with the data line pair) or Alternative B (powering with the idle line pair), and regardless of whether the wiring sequence is T568A or T568B, the rectifier module can correct it to a uniform DC polarity input to the power receiving chip or power supply chip, eliminating the risk of equipment malfunction or damage caused by uncertain wiring polarity, and greatly enhancing the compatibility and robustness of the power supply and receiving devices.

[0026] In some exemplary embodiments, the power supply and receiving device further includes a detection unit, which is electrically connected to both the first terminal and the second terminal. The detection unit is used to detect whether the first terminal and the second terminal are energized. The control module is electrically connected to the detection unit.

[0027] Based on the above embodiments, the detection unit provides decision-making basis for the control module. The detection unit reports the detection results to the control module, which can intelligently determine which port to draw power from and which port to supply power to, without manual intervention, thus ensuring the accuracy of the intelligent control logic. The detection unit separates the detection task, allowing the powered chip or power supply chip to avoid continuous operation in the detection state, which helps reduce overall system power consumption and allows the powered chip or power supply chip to focus more on efficient power conversion.

[0028] In some exemplary embodiments, the switching module further has a fifth connection terminal, and the power supply and receiving device further includes a third terminal, which is connected to the fifth connection terminal; When the first terminal is energized, the switching module switches to the fifth connection terminal and electrically connects to the fourth connection terminal; when the second terminal is energized, the switching module switches to the fifth connection terminal and electrically connects to the fourth connection terminal; when the third terminal is energized, the switching module switches to the fifth connection terminal and electrically connects to the third connection terminal, and both the first connection terminal and the second connection terminal are electrically connected to the fourth connection terminal.

[0029] Based on the above embodiments, by providing a third terminal, the power supply and receiving device can simultaneously have two PSE interfaces, thereby enabling simultaneous power supply to two devices. Alternatively, the power supply and receiving device can simultaneously have two PD interfaces, resulting in more stable power reception and higher power output.

[0030] In some exemplary embodiments, the power supply and receiving device includes one of a multi-stage microphone, a conference control panel, a camera, and a router.

[0031] Based on the above embodiments, multiple microphones can be connected in series to form a linear array microphone, and cameras can be connected in series to form a camera chain. The conference control screen can be powered by PoE and can also power its connected peripheral devices (such as another secondary screen and microphones), becoming the power and data hub of the desktop.

[0032] Routers act as edge nodes in a network environment, flexibly accepting power from upstream devices and providing power and network access to downstream devices (such as sensors and access points).

[0033] Secondly, embodiments of this application provide a Power over Ethernet (PoE) system, including multiple power supply and receiving devices and network cables, wherein the multiple power supply and receiving devices are connected in series via the network cables.

[0034] The Ethernet power supply system of this application embodiment has a high fault tolerance rate because the first connection terminal can be connected to the third connection terminal or the fourth connection terminal, and the second connection terminal can be connected to the third connection terminal or the fourth connection terminal. Therefore, the first terminal can be used as a power receiving terminal or a power supply terminal, and the second terminal can be used as a power receiving terminal or a power supply terminal. When the power receiving device is connected to the network cable, there is no risk of incorrect port connection, and the fault tolerance rate is high. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a block diagram of a power supply and receiving device in one embodiment of this application; Figure 2 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 3 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 4 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 5 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 6 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 7 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 8 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 9This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 10 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 11 This is a block diagram of a power supply and receiving device in another embodiment of this application; Figure 12 This is a block diagram of a Power over Ethernet (PoE) system according to one embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 100, power supply and receiving device; 110, switching module; 111, first connection terminal; 112, second connection terminal; 113, third connection terminal; 114, fourth connection terminal; 115, fifth connection terminal; 116, first switching unit; 117, second switching unit; 120, first terminal; 130, second terminal; 140, power receiving chip; 150, power supply chip; 161, control module; 162, transistor; 170, rectifier module; 180, detection unit; 190, third terminal; 200, Power over Ethernet system; 210, power interface. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0043] In related technologies, multi-cascaded devices have two RJ45 ports. One RJ45 port is a power supply terminal to provide power to other devices, and the other RJ45 port is a power receiving terminal. The power receiving port connects to the upstream device, and the power supply port connects to the downstream device. However, when connecting network cables, users need the nameplates around the RJ45 terminals to distinguish the functions of different RJ45 ports, which inevitably leads to the possibility of connecting the wrong port.

[0044] To this end, the inventors investigated whether both RJ45 ports could switch between the power receiving terminal and the power supply terminal, so that the two RJ45 ports of multi-cascaded devices would not need to be strictly distinguished.

[0045] like Figure 1 As shown, the first aspect of this application provides a power supply and receiving device 100, which includes a switching module 110, a first terminal 120, a second terminal 130, a power receiving chip 140, and a power supply chip 150.

[0046] The switching module 110 has a first connection terminal 111, a second connection terminal 112, a third connection terminal 113, and a fourth connection terminal 114. The switching module 110 is used to switch between the first connection terminal 111 and the third connection terminal 113 and the fourth connection terminal 114, and between the second connection terminal 112 and the third connection terminal 113 and the fourth connection terminal 114. That is, the first connection terminal 111 can be connected to the third connection terminal 113 or the fourth connection terminal 114, and the second connection terminal 112 can be connected to the third connection terminal 113 or the fourth connection terminal 114.

[0047] The first terminal 120 is electrically connected to the first connection terminal 111. The first terminal 120 and the first connection terminal 111 can be electrically connected by means of wires, ribbon cables, circuit board traces, etc. The first terminal 120 can be an RJ45 female port.

[0048] The second terminal 130 is electrically connected to the second connection terminal 112. The second terminal 130 and the second connection terminal 112 can be electrically connected by means of wires, ribbon cables, circuit board traces, etc. The second terminal 130 can be an RJ45 female port.

[0049] The output terminal of the power receiving chip 140 is used to supply power to the power supply and receiving device 100 itself. When the third connection terminal 113 supplies power to the power receiving chip 140, the power receiving chip 140 can communicate via protocol to output the voltage required by the power supply and receiving device 100.

[0050] The input terminal of the power supply chip 150 is connected to the third connection terminal 113, and the output terminal of the power supply chip 150 is electrically connected to the fourth connection terminal 114. When the third connection terminal 113 supplies power to the power supply chip 150, the power supply chip 150 can negotiate the power supply voltage with the powered device. For example, for standard PoE (compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.3af or IEEE 802.3at standards), the power supply chip 150 and the powered chip 140 can negotiate the power supply voltage through a handshake protocol, initially using low voltage (2-10V) detection, and switching to high voltage power supply after detecting the powered device.

[0051] In summary, since the first connection terminal 111 can be connected to the third connection terminal 113 or the fourth connection terminal 114, and the second connection terminal 112 can be connected to the third connection terminal 113 or the fourth connection terminal 114, the first terminal 120 can be used as a power receiving terminal or a power supply terminal, and the second terminal 130 can be used as a power receiving terminal or a power supply terminal. Therefore, the power receiving device 100 has no risk of incorrect port connection when connecting the network cable, and has a high fault tolerance rate.

[0052] In some embodiments, the power supply and receiving device 100 includes a first connection state and a second connection state, such as... Figure 2As shown, when the first terminal 120 is energized, that is, when the first terminal 120 acts as a energized terminal, the first connection terminal 111 is energized, and the energized device 100 is in the first connection state. The switching module 110 switches to an electrical connection between the first connection terminal 111 and the third connection terminal 113, and the third connection terminal 113 is energized, supplying power to the energized chip 140 and the power supply chip 150. The second terminal 130 can then act as either an energized terminal or a power supply terminal, thereby enabling the second terminal 130 to flexibly switch functions according to the connected device.

[0053] like Figure 3 As shown, when the second terminal 130 is energized, that is, when the second terminal 130 acts as a power receiving terminal, the second connection terminal 112 is energized, and the power receiving device 100 is in the second connection state. The switching module 110 switches to the second connection terminal 112 and the third connection terminal 113 for electrical connection, and the third connection terminal 113 is energized, supplying power to the power receiving chip 140 and the power supply chip 150. The first terminal 120 can then act as either a power receiving terminal or a power supply terminal, thereby enabling the first terminal 120 to flexibly switch functions according to the connected device.

[0054] In some embodiments, such as Figure 4 As shown, when the first terminal 120 is energized, that is, when the first terminal 120 is used as the energized terminal, the first connection terminal 111 is energized, and the energized device 100 is in the first connection state. The switching module 110 switches to the first connection terminal 111 and the third connection terminal 113 are electrically connected, and the third connection terminal 113 is energized. The third connection terminal 113 supplies power to the energized chip 140 and the power supply chip 150.

[0055] The second connection terminal 112 is electrically connected to the fourth connection terminal 114. The voltage output by the power supply chip 150 is transmitted to the second connection terminal 112 through the fourth connection terminal 114 and output to the outside through the second terminal 130, that is, the second terminal 130 serves as a power supply terminal.

[0056] Alternatively, the second connection terminal 112 is electrically connected to the third connection terminal 113. When the second connection terminal 112 is connected to the power receiving device, the second connection terminal 112 is switched to be electrically connected to the fourth connection terminal 114.

[0057] In some embodiments, such as Figure 5 As shown, when the second terminal 130 is energized, that is, when the second terminal 130 is used as the energized terminal, the second connection terminal 112 is energized, and the energized device 100 is in the second connection state. The switching module 110 switches to the second connection terminal 112 and the third connection terminal 113 are electrically connected, and the third connection terminal 113 is energized. The third connection terminal 113 supplies power to the energized chip 140 and the power supply chip 150.

[0058] The first connection terminal 111 is electrically connected to the fourth connection terminal 114. The voltage output by the power supply chip 150 is transmitted to the first connection terminal 111 through the fourth connection terminal 114 and output to the outside through the first terminal 120, that is, the first terminal 120 serves as the power supply terminal.

[0059] Alternatively, the first connection terminal 111 is electrically connected to the third connection terminal 113. When the first connection terminal 111 is connected to the power receiving device, the first connection terminal 111 is switched to be electrically connected to the fourth connection terminal 114.

[0060] For example, in a conference room meeting, there are often multiple participants. To ensure good sound reception, each participant needs a microphone. Each microphone has an RJ45 port for receiving power and an RJ45 port for supplying power. The power supply port of the previous microphone is connected to the power receiving port of the next microphone, and so on, allowing multiple microphones to be connected sequentially for power supply. However, when the cascading direction of the microphones needs to be changed, the RJ45 connectors on the two RJ45 ports of the microphones must be manually swapped, which is quite cumbersome.

[0061] In this embodiment, the first terminal 120 can be used as a power receiving terminal or a power supply terminal, and the second terminal 130 can also be used as a power receiving terminal or a power supply terminal. When the first terminal 120 is used as a power receiving terminal, the second terminal 130 is used as a power supply terminal; when the second terminal 130 is used as a power receiving terminal, the first terminal 120 is used as a power supply terminal. This allows the input and output of the first terminal 120 and the second terminal 130 of the power supply and receiving device 100 to be switched. When it is necessary to change the cascade direction of the power supply and receiving device 100, there is no need to manually replace the crystal head, making the operation relatively simple.

[0062] Cascading devices typically have two RJ45 ports: one for power supply and the other for power reception. Since the power supply and power reception ports appear identical, users must distinguish their functions by examining the nameplates around the RJ45 ports. This inefficient process increases the likelihood of incorrect port connections, potentially causing some cascading devices to malfunction. Furthermore, checking for incorrect connections is particularly difficult in locations with concealed wiring.

[0063] like Figure 2-5As shown, in some embodiments, the input terminal of the power receiving chip 140 is electrically connected to the third connection terminal 113. This allows the power receiving chip 140 to be powered through the first terminal 120 or the second terminal 130 when the first terminal 120 or the second terminal 130 is used as the power receiving terminal, thus eliminating the need for local power supply and making the layout more convenient.

[0064] like Figure 6 As shown, in some other embodiments, the input terminal of the powered chip 140 is not connected to the third connection terminal 113, and the powered device 100 also includes a power interface 210 for connecting to a local power source, through which the powered chip 140 is powered.

[0065] like Figure 7 As shown, in some embodiments, the power supply and receiving device 100 further includes a third connection state. When neither the first terminal 120 nor the second terminal 130 is energized, the power supply and receiving device 100 is in the third connection state. The switching module 110 electrically connects the first connection terminal 111 to the third connection terminal 113 and electrically connects the second connection terminal 112 to the third connection terminal 113.

[0066] That is, both the first terminal 120 and the second terminal 130 are PDs by default. When one of the first terminal 120 or the second terminal 130 receives power, the third connection terminal 113 is energized, and the power receiving chip 140 can supply power to the power supply and receiving device 100, thereby enabling the power supply and receiving device 100 to be woken up and started immediately, improving the response speed of the power supply and receiving device 100. The other of the first terminal 120 and the second terminal 130 can be switched to PSE to supply power to the next-level power supply and receiving device 100. When deploying the power supply and receiving device 100, users do not need to distinguish whether the first terminal 120 or the second terminal 130 is used for power supply or power receiving. They can blindly insert the first terminal 120 and the second terminal 130 without causing the problem of incorrect port connection, reducing the deployment difficulty. Even non-professionals can easily complete the installation, improving the user experience. Of course, in addition to the user stage, there is also no need to distinguish between the first terminal 120 and the second terminal 130 in the R&D, production testing, and after-sales stages, improving the efficiency of each stage.

[0067] In some other embodiments, the first terminal 120 is used as a power supply terminal by default, and the second terminal 130 is used as a power supply terminal by default, or the second terminal 130 is used as a power receiving terminal by default and the first terminal 120 is used as a power supply terminal by default, or the first terminal 120 is used as a power supply terminal by default and the second terminal 130 is used as a power supply terminal by default. The configuration can be set according to actual needs and is not limited here.

[0068] like Figure 8As shown, in some embodiments, the switching module 110 includes a first switching unit 116 and a second switching unit 117.

[0069] The first end of the first switching unit 116 serves as the first connection end 111. The second end of the first switching unit 116 is electrically connected to both the input end of the powered chip 140 and the input end of the power supply chip 150. The third end of the first switching unit 116 is electrically connected to the output end of the power supply chip 150.

[0070] The first end of the second switching unit 117 serves as the second connection end 112. The second end of the second switching unit 117 is electrically connected to both the input end of the powered chip 140 and the input end of the powered chip 150. The third end of the second switching unit 117 is electrically connected to the output end of the powered chip 150.

[0071] The third connection terminal 113 includes a first sub-terminal and a second sub-terminal, and the fourth connection terminal 114 includes a third sub-terminal and a fourth sub-terminal.

[0072] When the first terminal 120 is energized, the first switching unit 116 switches to the first terminal and the second terminal are electrically connected, and the second terminal of the first switching unit 116 serves as the first sub-terminal. The second switching unit 117 switches to the first terminal and the third terminal are electrically connected, and the third terminal of the second switching unit 117 serves as the third sub-terminal.

[0073] When the second terminal 130 is energized, the first end of the second switching unit 117 is electrically connected to the second terminal, and the second end of the second switching unit 117 serves as the second sub-terminal. The first end of the first switching unit 116 is connected to the third terminal, and the third end of the first switching unit 116 serves as the fourth sub-terminal.

[0074] By splitting the switching module 110 into a first switching unit 116 and a second switching unit 117, the first switching unit 116 is responsible for the function switching of the first terminal 120, and the second switching unit 117 is responsible for the function switching of the second terminal 130. The first switching unit 116 and the second switching unit 117 work together to complete complex switching operations. Furthermore, the separate setting of the first switching unit 116 and the second switching unit 117 can improve the fault tolerance rate.

[0075] In some embodiments, when neither the first terminal 120 nor the second terminal 130 is energized, the first end of the first switching unit 116 is electrically connected to the second end, the first end of the second switching unit 117 is electrically connected to the second end, the second end of the first switching unit 116 serves as the third connection end 113, and the third end of the first switching unit 116 serves as the fourth connection end 114.

[0076] In other words, both the first terminal 120 and the second terminal 130 are defaulted to being powered terminals. When one of the first terminal 120 or the second terminal 130 receives power, the third connection terminal 113 becomes energized, and the power receiving chip 140 can supply power to the power supply and receiving device 100, thereby enabling the power supply and receiving device 100 to be immediately woken up and started, improving the response speed of the power supply and receiving device 100. The other of the first terminal 120 and the second terminal 130 can be switched to be a power supply terminal to supply power to the next-level power supply and receiving device 100. When deploying the power supply and receiving device 100, users do not need to distinguish whether the first terminal 120 or the second terminal 130 is used for power supply or power receiving. They can blindly insert the first terminal 120 and the second terminal 130 without causing the problem of incorrect port connection, reducing the deployment difficulty. Even non-professionals can easily complete the installation, improving the user experience. Of course, in addition to the user stage, there is also no need to distinguish between the first terminal 120 and the second terminal 130 during the research and development, production testing, and after-sales stages, improving the efficiency of each stage.

[0077] In some embodiments, the first switching unit 116 includes a first double-pole double-throw switch, the fixed end of the first double-pole double-throw switch serves as the first end of the first switching unit 116, the normally closed end of the first double-pole double-throw switch serves as the second end of the first switching module 110, and the normally open end of the first double-pole double-throw switch serves as the third end of the first switching module 110.

[0078] The first double-pole double-throw switch can switch between positive and negative terminals simultaneously, replacing a combination of multiple single-pole switches. This simplifies circuit board design, reduces the number of components, improves reliability, and lowers costs. The "double-pole" design ensures that power lines switch synchronously and consistently, preventing data errors or circuit failures caused by asynchronous switching. The normally open and normally closed contacts of the first double-pole double-throw switch are physically separated, providing excellent electrical isolation between the power supply and receiving circuits and preventing mutual interference.

[0079] In some embodiments, the second switching unit 117 includes a second double-pole double-throw switch, the fixed end of the second double-pole double-throw switch serves as the first end of the second switching unit 117, the normally closed end of the second double-pole double-throw switch serves as the second end of the second switching module 110, and the normally open end of the second double-pole double-throw switch serves as the third end of the second switching module 110.

[0080] The second double-pole double-throw switch can switch between positive and negative terminals simultaneously, replacing multiple single-pole switches. This simplifies circuit board design, reduces the number of components, improves reliability, and lowers costs. The "double-pole" design ensures that power lines switch synchronously and consistently, preventing data errors or circuit failures caused by asynchronous switching. The normally open and normally closed contacts of the second double-pole double-throw switch are physically separated, providing excellent electrical isolation between the power supply and receiving circuits and preventing mutual interference.

[0081] like Figure 9 As shown, in some embodiments, the power supply and receiving device 100 further includes a rectifier module 170, which is electrically connected between the third connection terminal 113 and the power receiving chip 140, and also electrically connected between the third connection terminal 113 and the power supply chip 150. The rectifier module 170 is used for rectification. The rectifier module 170 can be a rectifier diode bridge rectifier.

[0082] The rectifier module 170 can improve port polarity compatibility. Regardless of whether the power supply method used at the other end of the network cable is Alternative A (powering with the data line pair) or Alternative B (powering with the idle line pair), and regardless of whether the wiring sequence is T568A or T568B, the rectifier module 170 can correct it to a uniform DC polarity input to the power receiving chip 140 or the power supply chip 150. This eliminates the risk of equipment malfunction or damage caused by uncertain wiring polarity, and greatly enhances the compatibility and robustness of the power supply and receiving device 100.

[0083] like Figure 10 As shown, in some embodiments, the power supply and receiving device 100 further includes a control module 161 and a transistor 162. The power receiving terminal of the control module 161 is electrically connected to the output terminal of the power receiving chip 140. The control terminal of the control module 161 is electrically connected to the transistor 162. The transistor 162 is connected to the controlled terminal of the first switching unit 116 and the controlled terminal of the second switching unit 117. The control module 161 can control the switching of the transistor 162. The transistor 162 can control the first terminal of the first switching unit 116 to switch to conduct with the second terminal or the third terminal, and the transistor 162 can control the first terminal of the second switching unit 117 to switch to conduct with the second terminal or the third terminal.

[0084] Transistor 162 can be a MOSFET, transistor, etc. The control module 161 can control the first switching unit 116 and the second switching unit 117 through transistor 162. The maximum drive capability of the GPIO pin of the control module 161 is typically 5-20mA. Transistor 162 acts as a current amplifier, and the control module 161 only needs to provide a very small base / gate current (typically only 1-5mA) to control transistor 162, which then bears the large current required to drive the first switching unit 116 and the second switching unit 117.

[0085] like Figure 10 As shown, in some embodiments, the power supply and receiving device 100 further includes a detection unit 180, which is electrically connected to both the first terminal 120 and the second terminal 130. The detection unit 180 is used to detect whether the first terminal 120 and the second terminal 130 are energized. The control module 161 is electrically connected to the detection unit 180.

[0086] The detection unit 180 provides decision-making basis for the control module 161. The detection unit 180 reports the detection results to the control module 161, which can intelligently determine which port to draw power from and which port to supply power to, without manual intervention, ensuring the accuracy of the intelligent control logic. The detection unit 180 separates the detection task, so that the powered chip 140 or the power supply chip 150 does not need to work continuously in the detection state, which helps to reduce the overall system power consumption and allows the powered chip 140 or the power supply chip 150 to focus more on efficient power conversion.

[0087] like Figure 11 As shown, in some embodiments, the switching module 110 also has a fifth connection terminal 115, and the power supply and receiving device 100 further includes a third terminal 190, which is connected to the fifth connection terminal 115.

[0088] When the first terminal 120 is energized, the switching module 110 switches to the fifth connection terminal 115 and the fourth connection terminal 114 for electrical connection; when the second terminal 130 is energized, the switching module 110 switches to the fifth connection terminal 115 and the fourth connection terminal 114 for electrical connection; when the third terminal 190 is energized, the switching module 110 switches to the fifth connection terminal 115 and the third connection terminal 113 for electrical connection, and the first connection terminal 111 and the second connection terminal 112 are both electrically connected to the fourth connection terminal 114.

[0089] By providing the third terminal 190, the power supply and receiving device 100 can simultaneously have two PSE interfaces, enabling it to supply power to two devices at the same time. Alternatively, the power supply and receiving device 100 can simultaneously have two PD interfaces, resulting in more stable power reception and higher power output.

[0090] In some embodiments, the power supply and receiving device 100 includes one of a multi-level microphone, a conference control screen, a camera, and a router.

[0091] Multi-level microphones can be connected in series to form a linear array microphone, and cameras can be connected in series to form a camera chain. The conference control panel can be powered via PoE and can also power its connected peripheral devices (such as another secondary screen and microphones), becoming the power and data hub of the desktop.

[0092] Routers act as edge nodes in a network environment, flexibly accepting power from upstream devices and providing power and network access to downstream devices (such as sensors and access points).

[0093] like Figure 12 As shown, a second aspect of this application provides a Power over Ethernet (PoE) system 200, which includes a plurality of power supply and receiving devices 100 and a network cable, wherein the plurality of power supply and receiving devices 100 are connected in series via the network cable.

[0094] The first terminal 120 can be used as a power receiving terminal or a power supply terminal, and the second terminal 130 can also be used as a power receiving terminal or a power supply terminal. When the power receiving device 100 is connected to the network cable, there is no risk of incorrect port connection, and the fault tolerance rate is high.

[0095] A standard Category 5 network cable has four twisted pairs. IEEE 80 2.3af allows for various power supply methods using different wiring sequences. For example, one method transmits current through pairs 4, 5, 7, and 8, with pairs 4 and 5 designated as positive and pairs 7 and 8 as negative. Another method transmits power through pairs 1, 2, 3, and 6, with arbitrary polarity: pairs 1 and 2 as positive and pairs 3 and 6 as negative, or pairs 1 and 2 as negative and pairs 3 and 6 as positive.

[0096] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A power supply and receiving device, characterized in that, include: The switching module has a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal; The first terminal is electrically connected to the first connection terminal; The second terminal is electrically connected to the second connection terminal; A power receiving chip, wherein the input terminal of the power receiving chip is electrically connected to the third connection terminal, and the output terminal of the power receiving chip is used to supply power to the power supply and receiving device; and A power supply chip, wherein the output terminal of the power supply chip is electrically connected to the fourth connection terminal; The switching module is used to switch between the first connection terminal and the third and fourth connection terminals, and between the second connection terminal and the third and fourth connection terminals.

2. The power supply and receiving device according to claim 1, characterized in that, The power supply and receiving device includes a first connection state and a second connection state. When the first terminal is energized, the power supply and receiving device is in the first connection state, and the first connection end is electrically connected to the third connection end. When the second terminal is energized, the power supply and receiving device is in the second connection state, and the second connection end is electrically connected to the third connection end.

3. The power supply and receiving device according to claim 2, characterized in that, When the first terminal is energized, the power supply and receiving device is in the first connection state, the first connection terminal is electrically connected to the third connection terminal, and the second connection terminal is electrically connected to the fourth connection terminal; when the second terminal is energized, the power supply and receiving device is in the second connection state, the second connection terminal is electrically connected to the third connection terminal, and the first connection terminal is electrically connected to the fourth connection terminal.

4. The power supply and receiving device according to claim 1, characterized in that, The power supply and receiving device also includes a third connection state. When neither the first terminal nor the second terminal is energized, the power supply and receiving device is in the third connection state, wherein the first connection end is connected to the third connection end, and the second connection end is connected to the third connection end.

5. The power supply and receiving device according to claim 1, characterized in that, The switching module includes: The first switching unit has a first end serving as the first connection end, a second end of the first switching unit being electrically connected to both the input end of the powered chip and the input end of the powered chip, and a third end of the first switching unit being electrically connected to the output end of the powered chip. The second switching unit has a first end serving as the second connection end, a second end being electrically connected to both the input end of the powered chip and the input end of the powered chip, and a third end being electrically connected to the output end of the powered chip. The third connection terminal includes a first sub-terminal and a second sub-terminal, and the fourth connection terminal includes a third sub-terminal and a fourth sub-terminal. When the first terminal is energized, the first switching unit switches to a state where the first terminal is electrically connected to the second terminal, and the second terminal of the first switching unit serves as the first sub-terminal. When the second terminal is energized, the second switching unit switches to a state where the first terminal is electrically connected to the second terminal, and the second terminal of the second switching unit serves as the second sub-terminal. When the first switching unit switches to a state where the first terminal is connected to the third terminal, the third terminal of the first switching unit serves as the fourth sub-terminal.

6. The power supply and receiving device according to claim 5, characterized in that, When neither the first terminal nor the second terminal is energized, the first end of the first switching unit is electrically connected to the second end, the first end of the second switching unit is electrically connected to the second end, the second end of the first switching unit serves as the third connection end, and the third end of the first switching unit serves as the fourth connection end.

7. The power supply and receiving device according to claim 5, characterized in that, The first switching unit includes a first double-pole double-throw switch, the fixed end of the first double-pole double-throw switch serving as the first end of the first switching unit, the normally closed end of the first double-pole double-throw switch serving as the second end of the first switching module, and the normally open end of the first double-pole double-throw switch serving as the third end of the first switching module; and / or, the second switching unit includes a second double-pole double-throw switch, the fixed end of the second double-pole double-throw switch serving as the first end of the second switching unit, the normally closed end of the second double-pole double-throw switch serving as the second end of the second switching module, and the normally open end of the second double-pole double-throw switch serving as the third end of the second switching module.

8. The power supply and receiving device according to claim 5, characterized in that, The power supply and receiving device further includes a control module and a transistor. The power receiving terminal of the control module is electrically connected to the output terminal of the power receiving chip. The control terminal of the control module is electrically connected to the transistor. The transistor is connected to the controlled terminal of the first switching unit and the controlled terminal of the second switching unit. The control module can control the switching of the transistor. The transistor can control the first terminal of the first switching unit to switch to conduct with the second terminal or the third terminal, and the transistor can control the first terminal of the second switching unit to switch to conduct with the second terminal or the third terminal.

9. The power supply and receiving device according to claim 1, characterized in that, The power supply and receiving device further includes a rectifier module, which is electrically connected between the third connection terminal and the power receiving chip, and is also electrically connected between the third connection terminal and the power supply chip. The rectifier module is used for rectification.

10. The power supply and receiving device according to claim 8, characterized in that, The power supply and receiving device further includes a detection unit, which is electrically connected to both the first terminal and the second terminal. The detection unit is used to detect whether the first terminal and the second terminal are energized. The control module is electrically connected to the detection unit.

11. The power supply and receiving device according to claim 1, characterized in that, The switching module also has a fifth connection terminal, and the power supply and receiving device further includes a third terminal, which is connected to the fifth connection terminal. When the first terminal is energized, the switching module switches to the fifth connection terminal and electrically connects to the fourth connection terminal; when the second terminal is energized, the switching module switches to the fifth connection terminal and electrically connects to the fourth connection terminal; when the third terminal is energized, the switching module switches to the fifth connection terminal and electrically connects to the third connection terminal, and both the first connection terminal and the second connection terminal are electrically connected to the fourth connection terminal.

12. The power supply and receiving device according to claim 1, characterized in that, The input terminal of the power supply chip is connected to the third connection terminal.

13. The power supply and receiving device according to any one of claims 1-12, characterized in that, The power supply and receiving device includes one of the following: multi-level microphone, conference control screen, camera, and router.

14. A Power over Ethernet (PoE) system, characterized in that, It includes multiple power supply and receiving devices and network cables as described in any one of 1-13, wherein the multiple power supply and receiving devices are connected in series via the network cables.

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