CN210807295U - POE power supply unit - Google Patents
POE power supply unit Download PDFInfo
- Publication number
- CN210807295U CN210807295U CN201921930823.9U CN201921930823U CN210807295U CN 210807295 U CN210807295 U CN 210807295U CN 201921930823 U CN201921930823 U CN 201921930823U CN 210807295 U CN210807295 U CN 210807295U
- Authority
- CN
- China
- Prior art keywords
- power supply
- branch
- interface
- voltage
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model is suitable for a POE power supply technical field provides a POE power supply unit, include power supply end net twine interface, receive electric end net twine interface, the branch road that steps up, step down the branch road, directly link branch road and change over switch. The change-over switch is connected with the voltage boosting branch, the voltage reducing branch and the direct connection branch, and switching of the three branches can be achieved. When the change-over switch is switched to the boosting branch circuit, the power supply voltage is boosted and then output, and the requirement of high-voltage power receiving equipment is met; when the change-over switch is switched to the voltage reduction branch, the power supply voltage is output after being reduced, and the requirement of low-voltage power receiving equipment is met; when the change-over switch is switched to the direct connection branch, the power supply voltage is directly output, and the requirement of the power receiving equipment without voltage conversion is met. Therefore, this POE power supply unit can satisfy the demand of the different voltages of different powered devices, can carry out supply voltage's adjustment according to the powered device, promotes the power supply flexibility.
Description
Technical Field
The utility model belongs to the technical field of the POE power supply, especially, relate to a POE power supply unit.
Background
Currently, in the field of digital security, more and more network electronic devices are designed as powered devices powered by POE, such as VoIP phones, ceiling-mounted wireless APs, WIIF panels, surveillance cameras, etc., whose installation and use are severely limited by the availability of AC power (or installation costs are higher). Therefore, the network electronic equipment adopts POE power supply, saves the power supply line part, integrates the network information and the power supply together, and is more convenient and safer. The advent of POE powering technology has allowed designers to easily break through these limitations, and POE powering will likely promote the emergence of a new generation of applications as power semiconductor manufacturers offer more diverse switches and devices, and new industry standards will support the use of higher power levels.
POE (Power over Ethernet, Ethernet Power over Ethernet) is a method for remotely supplying Power to connected network terminal devices (wireless AP, IP Phone, door access, IP Camera, etc.) through Ethernet without changing the existing network architecture, so that a constructor does not need to separately deploy a Power supply system for each terminal device, wiring and management costs for deploying the terminal devices can be greatly reduced, and development of related fields is promoted. The POE system is divided into a PSE end and a PD end, wherein the PSE end is power supply equipment, and the PD end is powered equipment.
However, the power supply voltage of the existing POE power supply device is fixed, and the powered device at the PD end is various, and the required voltage is high or low, and the existing POE power supply device cannot adjust the power supply voltage according to the powered device at the PD end, resulting in poor power supply flexibility.
SUMMERY OF THE UTILITY MODEL
The utility model provides a POE power supply unit for solve the relatively poor problem of current POE power supply unit's power supply flexibility.
The utility model provides a POE power supply unit, include:
the power supply end network cable interface comprises a first signal interface and a power supply interface;
the power receiving end network cable interface comprises a second signal interface and a power receiving interface;
the boost branch circuit is sequentially provided with a first switch, a boost module, a first filtering module and a second switch in series;
the voltage reduction branch is sequentially provided with a third switch, a voltage reduction module, a second filtering module and a fourth switch in series;
the direct connection branch is used for realizing the direct connection of the power supply interface and the power receiving interface; and
the switching switch comprises an input end, a first output end, a second output end and a third output end, wherein the input end can be communicated with any one of the first output end, the second output end and the third output end to realize switching;
first signal interface connection second signal interface, the power supply interface connection the input, first output is connected boost being close to of branch road the one end of first switch, the second output is connected the being close to of step-down branch road the one end of third switch, the third output is connected directly link the one end on branch road, boost being close to of branch road the one end of second switch is connected receive the interface, be close to of step-down branch road the one end of fourth switch is connected receive the interface, the other end that directly links the branch road is connected receive the interface.
Optionally, a first unidirectional conduction module is further connected in series on the boost branch, a second unidirectional conduction module is further connected in series on the buck branch, and a third unidirectional conduction module is further connected in series on the direct branch.
The utility model has the advantages that: when the change-over switch is switched to the first output end, the power supply voltage of the power supply interface is boosted by the boosting module and then is supplied to the power receiving interface, so that the requirement of high-voltage power receiving equipment is met; when the change-over switch is switched to the second output end, the power supply voltage of the power supply interface is reduced by the voltage reduction module and then is supplied to the power receiving interface, so that the requirement of low-voltage power receiving equipment is met; when the change-over switch is switched to the third output end, the power supply voltage of the power supply interface is directly supplied to the power receiving interface, and the requirement of the power receiving equipment without voltage conversion is met. Consequently, this POE power supply unit's supply voltage is adjustable, satisfies the demand of the different voltages of different powered devices, can carry out supply voltage's adjustment according to the powered device, promotes the power supply flexibility. Moreover, when the boost module or the first filter module has a fault and needs to be repaired or replaced, the first switch and the second switch are disconnected, so that the influence on other components in the POE power supply device is avoided during the repair or replacement; when voltage reduction module or second filtering module trouble need overhaul or change, disconnection third switch and fourth switch avoid causing the influence to other component parts in the POE power supply unit when overhauing or changing. In addition, the first filtering module can filter the voltage output by the boosting module to ensure the stability of the voltage, and the second filtering module can filter the voltage output by the voltage reduction module to ensure the stability of the voltage.
Drawings
Fig. 1 is a schematic structural diagram of a POE power supply device.
Detailed Description
This embodiment provides a POE power supply unit, as shown in fig. 1, including power supply end net twine interface 1, receive electric end net twine interface 2, the branch road that steps up, step down the branch road, directly link branch road and change over switch 13.
The power supply end network cable interface 1 comprises a first signal interface and a power supply interface, wherein the first signal interface is used for signal transmission and can be a conventional communication interface; the power supply interface is connected with power supply equipment at the PSE end to provide electric energy, particularly direct current.
The power receiving end network cable interface 2 comprises a second signal interface and a power receiving interface, wherein the second signal interface is used for signal transmission and can be a conventional communication interface; the power receiving interface is connected with the power receiving equipment at the PD end to receive electric energy.
The boost branch is sequentially provided with a first switch 3, a boost module 4, a first filter module 5 and a second switch 6 in series. The first switch 3 and the second switch 6 may be conventional switches having two states, on and off. The boost module 4 is used to boost the voltage and may be a conventional boost device or circuit. First filtering module 5 is used for filtering the voltage of the module output that steps up, guarantees the stability of voltage, promotes the electric energy quality, can be conventional filter or device.
And the voltage reduction branch is sequentially connected with a third switch 8, a voltage reduction module 9, a second filtering module 10 and a fourth switch 11 in series. The third switch 8 and the fourth switch 11 may be conventional switches having two states, on and off. The voltage reducing module 9 is used for reducing voltage, and may be a conventional voltage reducing device or circuit. The second filtering module 10 is used for filtering the voltage output by the voltage reduction module, ensuring the stability of the voltage, improving the quality of electric energy, and can be a conventional filtering device or device.
The direct connection branch is used for realizing direct connection between the power supply interface and the power receiving interface, that is, the direct connection branch does not increase or decrease voltage, and then, the direct connection branch can be provided with no device and is only a connection line.
The change-over switch 13 includes an input terminal, a first output terminal, a second output terminal, and a third output terminal, and the input terminal can be communicated with any one of the first output terminal, the second output terminal, and the third output terminal to realize switching. The switch 13 may be a conventional manual switch.
As shown in fig. 1, the first signal interface is connected to the second signal interface, the power supply interface is connected to the input end of the switch 13, the first output end of the switch 13 is connected to the end of the boost branch close to the first switch 3, the second output end of the switch 13 is connected to the end of the buck branch close to the third switch 8, and the third output end of the switch 13 is connected to the end of the direct connection branch. The one end that is close to second switch 6 of branch road 13 that steps up is connected and is received the interface, and the one end that is close to fourth switch 11 of branch road that steps down is connected and is received the interface, and the other end that directly links the branch road is connected and is received the interface.
Furthermore, a first one-way conduction module 7 which can be a diode is also arranged on the boost branch in series, so that one-way conduction of electric energy is ensured, and backflow of the electric energy is prevented; a second one-way conduction module 12 which can be a diode is also arranged on the voltage reduction branch in series, so that one-way conduction of electric energy is ensured, and backflow of the electric energy is prevented; the direct-connected branch is also provided with a third one-way conduction module 14 in series, which can be a diode, so that one-way conduction of electric energy is ensured, and backflow of the electric energy is prevented. In addition, the specific position of the first unidirectional conducting module 7 on the boosting branch is not limited, and fig. 1 shows a specific setting position; the specific position of the second unidirectional conducting module 12 on the voltage-reducing branch is not limited, and fig. 1 shows a specific setting position. Of course, in the case of ensuring that the power is unidirectional, the three unidirectional conducting modules may not be provided.
When the powered device at the PD end needs high voltage, the change-over switch 13 is switched to the first output end, that is, the input end is communicated with the first output end, and the power supply voltage of the power supply interface is boosted by the boosting module 4 and then supplied to the powered interface, so that the high voltage requirement of the powered device at the PD end is met. When the powered device at the PD end needs low voltage, the change-over switch 13 is switched to the second output end, that is, the input end is communicated with the second output end, and the power supply voltage of the power supply interface is reduced by the voltage reduction module 9 and then supplied to the powered interface, so that the low voltage requirement of the powered device at the PD end is met. When the voltage of the powered device at the PD end is equal to that of the power supply device at the PSE end, i.e., voltage boosting or voltage reduction is not required, the switch 13 is switched to the third output end, i.e., the input end is communicated with the third output end, and the power supply voltage of the power supply interface is directly supplied to the powered interface, so that the requirement of the powered device at the PD end without voltage conversion is met. Moreover, when the boost module 4 or the first filter module 5 has a fault and needs to be repaired or replaced, the first switch 3 and the second switch 6 are disconnected, so that the influence on other components in the POE power supply device is avoided during the repair or replacement; when the voltage reduction module 9 or the second filtering module 10 has a fault and needs to be repaired or replaced, the third switch 8 and the fourth switch 11 are disconnected, so that the influence on other components in the POE power supply device is avoided during the repair or replacement.
Claims (2)
1. A POE power supply device is characterized by comprising:
the power supply end network cable interface comprises a first signal interface and a power supply interface;
the power receiving end network cable interface comprises a second signal interface and a power receiving interface;
the boost branch circuit is sequentially provided with a first switch, a boost module, a first filtering module and a second switch in series;
the voltage reduction branch is sequentially provided with a third switch, a voltage reduction module, a second filtering module and a fourth switch in series;
the direct connection branch is used for realizing the direct connection of the power supply interface and the power receiving interface; and
the switching switch comprises an input end, a first output end, a second output end and a third output end, wherein the input end can be communicated with any one of the first output end, the second output end and the third output end to realize switching;
first signal interface connection second signal interface, the power supply interface connection the input, first output is connected boost being close to of branch road the one end of first switch, the second output is connected the being close to of step-down branch road the one end of third switch, the third output is connected directly link the one end on branch road, boost being close to of branch road the one end of second switch is connected receive the interface, be close to of step-down branch road the one end of fourth switch is connected receive the interface, the other end that directly links the branch road is connected receive the interface.
2. The POE power supply device according to claim 1, wherein the boost branch is further provided with a first unidirectional conduction module in series, the buck branch is further provided with a second unidirectional conduction module in series, and the direct branch is further provided with a third unidirectional conduction module in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921930823.9U CN210807295U (en) | 2019-11-08 | 2019-11-08 | POE power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921930823.9U CN210807295U (en) | 2019-11-08 | 2019-11-08 | POE power supply unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210807295U true CN210807295U (en) | 2020-06-19 |
Family
ID=71232395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921930823.9U Active CN210807295U (en) | 2019-11-08 | 2019-11-08 | POE power supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210807295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113949593A (en) * | 2020-07-17 | 2022-01-18 | 河南铭视科技股份有限公司 | POE power supply control device |
-
2019
- 2019-11-08 CN CN201921930823.9U patent/CN210807295U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113949593A (en) * | 2020-07-17 | 2022-01-18 | 河南铭视科技股份有限公司 | POE power supply control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105119482A (en) | Single-inductor multi-output boost-buck circuit and control method thereof | |
| US20100072819A1 (en) | Bi-directional DC to DC power converter having a neutral terminal | |
| CN208590139U (en) | Single fire takes electric intelligent switch | |
| CN102664741A (en) | Method and device of power over Ethernet | |
| CN110289972B (en) | Network equipment and network system based on Ethernet | |
| CN107844078A (en) | Single live wire power getting circuit and electricity-fetching method | |
| CN203466837U (en) | Network camera power supply device | |
| CN210807295U (en) | POE power supply unit | |
| CN205081797U (en) | Multichannel mains operated circuit | |
| CN106356983A (en) | Power supply conversion device | |
| CN201256358Y (en) | Electric power device for wireless access terminal | |
| EP3876335A1 (en) | Battery control circuit, battery and unmanned aerial vehicle | |
| CN114268088B (en) | Power supply system and control method thereof | |
| CN210807296U (en) | POE power distribution device | |
| Oliver et al. | High-voltage DC distribution is key to increased system efficiency and renewable-energy opportunities | |
| CN202121830U (en) | Buck-boost constant-current power supply for LED lamps | |
| CN107979294A (en) | Power adapter circuit and power supply adaptor | |
| CN111555430B (en) | Mobile power supply device with energy and information bidirectional support and networking system | |
| CN106410787A (en) | Power supply and receiving mode switching equipment | |
| CN208094462U (en) | A kind of inverter module | |
| CN114070047A (en) | Three-wire DCDC converter and parallel operation power supply system | |
| CN206135416U (en) | Confession receives electric mode switch equipment | |
| CN111446768A (en) | Direct current uninterrupted power supply and method for realizing uninterrupted power supply | |
| CN110518678A (en) | A kind of multi-load wireless charging system of constant-current charge | |
| CN204925192U (en) | Removable system of electric energy meter communication module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |