A photovoltaic module for powering PoE

Abstract

The utility model relates to a technical field, and discloses a photovoltaic component for powering PoE, comprising a POE power controller, a PD device electrically connected to the POE power controller, and a photovoltaic component, a battery pack, and a POE power supply device for powering the PD device according to a power supply priority. The POE power supply device comprises a POE switch, a PC, and a POE bridge. The power supply voltage range of the POE power supply device is 50-57V, and the upper limit of the output voltage of the PSE end of the POE power controller is 57-60V. When the photovoltaic component has power output, the utility model gives priority to using the power of the photovoltaic component. When the power of the photovoltaic component is insufficient, the power is supplemented by an external battery or a PSE end. The external battery is charged only when the output power of the photovoltaic component is sufficient. When the output power of the photovoltaic component is insufficient and the battery pack has sufficient power, the battery pack supplies power to the PSE module, and the power supply port uses a signal isolation design, so that Ethernet signal transmission will not be affected by the serial connection of the power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of PoE power supply, in particular to a photovoltaic component for PoE power supply. Background Art

[0002] Power over Ethernet (PoE) is also called PoE power supply. It is a technology that can transmit power and data to devices through twisted pair cables in Ethernet. Through this technology, devices including Internet phones, wireless base stations, cameras, hubs, computers, etc. can be powered by PoE technology. Since electronic devices that can be powered by Ethernet do not need additional power sockets, they can save time and money to configure power cords, making the cost of the entire device system relatively lower. At present, RJ-45 network sockets are widely used in the world, so various PoE devices are compatible. PoE does not need to change the Ethernet cable architecture to operate, so the use of PoE system not only saves costs and is easy to install, but also has the ability to remotely power on and off. The solar controller is responsible for coordinating the work of solar panels, loads, and secondary batteries, and can provide constant voltage and current limiting output as required.

[0003] Existing solar controllers can provide power to various DC loads, but there is no controller on the market that can directly power network devices with PoE interfaces, which means that PoE power supply devices cannot be directly powered by solar energy. Therefore, we need to propose a photovoltaic module for PoE power supply, and the photovoltaic module controller can give priority to powering PD. Utility Model Content

[0004] The purpose of the utility model is to provide a photovoltaic module for PoE power supply. When the photovoltaic module has power output, the power of the photovoltaic module is used preferentially. When the power of the photovoltaic module is insufficient, the power is supplemented by an external battery or a PSE end. The external battery is charged only when the output power of the photovoltaic module is sufficient. When the output of the photovoltaic module is insufficient and the battery pack has sufficient power, the battery pack supplies power to the PSE module. The power supply port uses a signal isolation design, and the Ethernet signal transmission will not be affected by the serial connection of the power supply, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a photovoltaic assembly for PoE power supply, comprising a POE power controller, a PD device electrically connected to the POE power controller, and a photovoltaic assembly, a battery pack, and a POE power supply device for powering the PD device according to the power supply priority, wherein the POE power supply device comprises a POE switch, a PC, and a POE bridge, wherein the power supply voltage range of the POE power supply device is 50-57V, and the upper limit of the output voltage of the PSE end of the POE power controller is 57-60V;

[0006] The POE power controller includes a connected boost control circuit, a power management circuit, and a terminal J3, a terminal J4 and a terminal J5 connected to the power management circuit. The terminal J3, the terminal J4 and the terminal J5 are all set as connector interfaces RJ45. The three connector interfaces RJ45 are connected in parallel, and the sum of the output powers of the three connector interfaces RJ45 is not greater than 100W.

[0007] Preferably, the boost control circuit includes a chip U1, a terminal J2 and a terminal J6, and the terminals of pins 1, 19 and 20 of the chip U1 are connected to diodes D18, diode D19, diode D20 and diode D21 arranged in parallel, a resistor R1 is connected between pin 4 of the chip U1 and pin 1 of the terminal J2, and an inductor L1 is connected between one terminal of the diode D18, diode D19, diode D20 and diode D21 and pin 1 of the terminal J2.

[0008] Preferably, a capacitor C1 is connected between pin 2 of the chip U1 and the terminal J6, a resistor R9 and a light-emitting diode D2 are connected in series between pin 2 and pin 6 of the chip U1, a resistor R11 and a capacitor C3 are connected in series between the wiring terminals of pin 3, pin 4 and pin 5 of the chip U1, a resistor R4 is connected to pin 8 of the chip U1, a resistor R5 is connected to pin 9 of the chip U1, a capacitor C5 is connected to pin 10 of the chip U1, a capacitor C4 and a resistor R6 are connected to pin 11 of the chip U1, and the wiring terminals of the resistor R4, resistor R5, capacitor C5 and resistor R6 are grounded.

[0009] Preferably, resistors R2, R7 and R8 are connected in series between pins 12 and 13 of the chip U1, and resistor R3 is connected between resistor R6 and resistor R8, the other connection ends of diodes D18, D19, D20 and D21 are connected to pin 14 of the chip U1, and a grounded capacitor C2 is connected to pin 14 of the chip U1.

[0010] Preferably, the power management circuit includes a chip U2, a light emitting diode D3 and a resistor R10 are connected to pin 1 of the chip U2, a diode D22, a diode D23, and a MOS tube Q1 are respectively connected to the wiring terminals of pins 9 and 10 of the chip U2, a capacitor C7 is connected between pins 1 and 2 of the MOS tube Q1, a capacitor C6 is connected between pins 2 and 3 of the MOS tube Q1, and a diode D24 and a diode D25 are respectively connected to the wiring terminals of the capacitor C6 and pin 3 of the MOS tube Q1.

[0011] Preferably, diodes D10 and D13 are connected between pins 3 and 6 of the terminal J3, and diodes D11 and D12 are connected between pins 7 and 8 of the terminal J3; the diodes D22, D23, D24 and D25 are all connected to the terminal J3, the terminal J4 and the terminal J5.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model gives priority to using the power of the photovoltaic module when the photovoltaic module has power output. When the power of the photovoltaic module is insufficient, the power is supplemented by an external battery or the PSE end. The external battery is charged only when the output power of the photovoltaic module is sufficient. When the output of the photovoltaic module is insufficient and the battery pack has sufficient power, the battery pack supplies power to the PSE module, and the power supply port uses a signal isolation design, so that the Ethernet signal transmission will not be affected by the serial connection of the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the topological connection of the PoE photovoltaic module application of the utility model;

[0015] Figure 2 This is the PoE interface connection diagram of the utility model;

[0016] Figure 3 This is the schematic diagram of the PoE photovoltaic module controller of the utility model;

[0017] Figure 4 The circuit diagram of the boost control circuit of the utility model;

[0018] Figure 5 A circuit diagram of the power management circuit of the utility model;

[0019] Figure 6 The circuit diagram of the utility model wiring terminal J3, wiring terminal J4 and wiring terminal J5;

[0020] Figure 7 This is a schematic diagram of the power supply end device circuit of the utility model;

[0021] Figure 8 This is a schematic diagram of the circuit of the driven device of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-8 , the utility model provides a technical solution: a photovoltaic component for PoE power supply, including a POE power controller, a PD device electrically connected to the POE power controller, and a photovoltaic component, a battery pack, and a POE power supply device for powering the PD device according to the power supply priority, the POE power supply device includes a POE switch, a PC and a POE bridge, the power supply voltage range of the POE power supply device is 50-57V, and the upper limit of the output voltage of the PSE end of the POE power controller is 57-60V;

[0024] In order to provide more stable power to the load, the POE power controller provides a battery interface for the battery pack to connect. The surplus power is stored in the energy storage battery. When the power generation is insufficient or no power is generated, the battery provides power output for the load.

[0025] In order to ensure that the power generated by the photovoltaic module is provided to the PoE interface first, a power monitoring and battery charging and discharging control module is set between the controller DC-DC module and the PSE module. The external battery is charged only when the output power of the photovoltaic module is sufficient. When the output of the photovoltaic module is insufficient and the battery power is sufficient, the battery powers the PSE module.

[0026] PoE is the most resource-saving protocol for Ethernet terminals. To this solution, a solar power connection solution is added, and the interface of the PoE photovoltaic module is connected in series between the PoE terminal and the back-end equipment. When there is sufficient sunlight, the power supply of the PoE terminal is provided by the photovoltaic module, and the photovoltaic module has surplus power, which is stored in the external battery pack; if the sunlight is not sufficient, the module power supply is insufficient, and the insufficient power is provided by the battery, and the remaining insufficient power is provided by the back-end PoE power supply device.

[0027] The POE power controller includes a connected boost control circuit, a power management circuit, a network signal isolation circuit, and a terminal J3, a terminal J4 and a terminal J5 connected to the power management circuit. The terminal J3, the terminal J4 and the terminal J5 are all set as connector interfaces RJ45. The three connector interfaces RJ45 are connected in parallel. Any connector interface RJ45 connected to the PD device can obtain power supply, and the sum of the output powers of the three connector interfaces RJ45 is not more than 100W.

[0028] The network signal isolation circuit is composed of eight diodes D10~D13 and D22~D25, which are used to disconnect the positive and negative poles of the PoE power controller power supply from the RJ45 interface; when the PD device and the PSE device are connected to the RJ45 interface of the PoE power controller, the signal pairs 1~signal pairs 4 of the PD device and the PSE device are physically connected through the RJ45 connector, and the positive pole of the PoE power controller power supply is used to power the device through the principle of forward conduction of the PN poles of D22~D25. At the same time, the electrical signal on the signal pair cannot be reversed because it is at the N pole, and the signal cannot be serially connected to the PoE power controller.

[0029] The PoE power supply protocol of IEEE802.3bt protocol requires an output voltage range of 44V to 57V. The output voltage of a PoE switch that complies with this protocol is typically 50V.

[0030] The output voltage of this application is set to 60V, which meets the PoE+ requirement. When the PoE switch and the photovoltaic module controller are connected to the PD device at the same time, the photovoltaic module controller can give priority to powering the PD.

[0031] The present application provides a solar panel or photovoltaic module controller that can directly power PoE interface devices, and can be connected in series to the existing PoE device power supply network. It does not affect the original power supply and signal transmission, and adds a power supply sequence of solar energy priority 1, external battery priority 2, and AC power (original power supply network) priority 3.

[0032] The power output interface of the POE power controller uses RJ-45. According to the PSE end requirements of the PoE protocol IEEE 802.3BT standard, the RJ-45 interface pi n1 and pi n4 are connected to the DC60V+ power supply respectively, and the power supply and protection control are realized by monitoring the current of the RJ-45 interface pi n1 and pi n4.

[0033] The boost control circuit includes a chip U1, a terminal J2 and a terminal J6. The terminals of pins 1, 19 and 20 of the chip U1 are connected to diodes D18, D19, D20 and D21 arranged in parallel. A resistor R1 is connected between pin 4 of the chip U1 and pin 1 of the terminal J2. An inductor L1 is connected between one terminal of the diodes D18, D19, D20 and D21 and pin 1 of the terminal J2.

[0034] A capacitor C1 is connected between pin 2 of the chip U1 and the terminal J6, a resistor R9 and a light-emitting diode D2 are connected in series between pin 2 and pin 6 of the chip U1, a resistor R11 and a capacitor C3 are connected in series between the wiring terminals of pins 3, 4 and 5 of the chip U1, a resistor R4 is connected to pin 8 of the chip U1, a resistor R5 is connected to pin 9 of the chip U1, a capacitor C5 is connected to pin 10 of the chip U1, a capacitor C4 and a resistor R6 are connected to pin 11 of the chip U1, and the wiring terminals of the resistor R4, the resistor R5, the capacitor C5 and the resistor R6 are grounded.

[0035] Resistors R2, R7 and R8 are connected in series between pins 12 and 13 of the chip U1, and resistor R3 is connected between resistor R6 and resistor R8. The other terminals of diodes D18, D19, D20 and D21 are connected to pin 14 of the chip U1, and a grounded capacitor C2 is connected to pin 14 of the chip U1.

[0036] The power management circuit includes a chip U2, and a light-emitting diode D3 and a resistor R10 are connected to pin 1 of the chip U2. A diode D22, a diode D23, and a MOS tube Q1 are respectively connected to the wiring terminals of pins 9 and 10 of the chip U2. A capacitor C7 is connected between pins 1 and 2 of the MOS tube Q1, a capacitor C6 is connected between pins 2 and 3 of the MOS tube Q1, and a diode D24 and a diode D25 are respectively connected to the wiring terminals of the capacitor C6 and pin 3 of the MOS tube Q1.

[0037] A diode D10 and a diode D13 are connected between pins 3 and 6 of the wiring terminal J3, and a diode D11 and a diode D12 are connected between pins 7 and 8 of the wiring terminal J3; the diode D22, the diode D23, the diode D24 and the diode D25 are all connected to the wiring terminal J3, the wiring terminal J4 and the wiring terminal J5.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module for powering PoE, characterized in that: It includes a POE power controller, a PD device electrically connected to the POE power controller, and a photovoltaic component, a battery pack, and a POE power supply device that supplies power to the PD device according to the power supply priority. The POE power supply device includes a POE switch, a PC, and a POE bridge. The power supply voltage range of the POE power supply device is 50-57V, and the upper limit of the output voltage of the PSE end of the POE power controller is 57-60V; The POE power controller includes a connected boost control circuit, a power management circuit, a network signal isolation circuit, and a wiring terminal J3, a wiring terminal J4 and a wiring terminal J5 connected to the power management circuit. The wiring terminal J3, the wiring terminal J4 and the wiring terminal J5 are all set as connector interfaces RJ45. The three connector interfaces RJ45 are connected in parallel. The sum of the output powers of the three connector interfaces RJ45 is not greater than 100W. The network signal isolation circuit is used to disconnect the positive and negative poles of the PoE power controller power supply from the RJ45 interface.

2. A photovoltaic assembly for powering PoE according to claim 1, characterized in that: The boost control circuit includes a chip U1, a terminal J2 and a terminal J6. The terminals of pins 1, 19 and 20 of the chip U1 are connected to diodes D18, D19, D20 and D21 arranged in parallel. A resistor R1 is connected between pin 4 of the chip U1 and pin 1 of the terminal J2. An inductor L1 is connected between one terminal of the diodes D18, D19, D20 and D21 and pin 1 of the terminal J2.

3. A photovoltaic assembly for powering PoE according to claim 2, characterized in that: A capacitor C1 is connected between pin 2 of the chip U1 and the terminal J6, a resistor R9 and a light-emitting diode D2 are connected in series between pin 2 and pin 6 of the chip U1, a resistor R11 and a capacitor C3 are connected in series between the wiring terminals of pins 3, 4 and 5 of the chip U1, a resistor R4 is connected to pin 8 of the chip U1, a resistor R5 is connected to pin 9 of the chip U1, a capacitor C5 is connected to pin 10 of the chip U1, a capacitor C4 and a resistor R6 are connected to pin 11 of the chip U1, and the wiring terminals of the resistor R4, the resistor R5, the capacitor C5 and the resistor R6 are grounded.

4. A photovoltaic assembly for powering PoE according to claim 3, characterized in that: Resistors R2, R7 and R8 are connected in series between pins 12 and 13 of the chip U1, and resistor R3 is connected between resistor R6 and resistor R8. The other terminals of diodes D18, D19, D20 and D21 are connected to pin 14 of the chip U1, and a grounded capacitor C2 is connected to pin 14 of the chip U1.

5. The photovoltaic assembly for powering PoE according to claim 1, characterized in that: The power management circuit includes a chip U2, and a light-emitting diode D3 and a resistor R10 are connected to pin 1 of the chip U2. A diode D22, a diode D23, and a MOS tube Q1 are respectively connected to the wiring terminals of pins 9 and 10 of the chip U2. A capacitor C7 is connected between pins 1 and 2 of the MOS tube Q1, a capacitor C6 is connected between pins 2 and 3 of the MOS tube Q1, and a diode D24 and a diode D25 are respectively connected to the wiring terminals of the capacitor C6 and pin 3 of the MOS tube Q1.

6. A photovoltaic assembly for powering PoE according to claim 5, characterized in that: A diode D10 and a diode D13 are connected between pins 3 and 6 of the wiring terminal J3, and a diode D11 and a diode D12 are connected between pins 7 and 8 of the wiring terminal J3; the diode D22, the diode D23, the diode D24 and the diode D25 are all connected to the wiring terminal J3, the wiring terminal J4 and the wiring terminal J5.

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