CN210807296U

CN210807296U - POE power distribution device

Info

Publication number: CN210807296U
Application number: CN201921960090.3U
Authority: CN
Inventors: 桂洪洋; 陈志忠; 万军杰; 赵强; 高波; 付保庆; 郭浩杰; 李典; 王志; 徐超; 杨军峰; 聂保春; 蒋凯; 桑万里; 王晓柯
Original assignee: Henan Mingshi Security Prevention Engineering Co ltd
Current assignee: Henan Mingshi Security Prevention Engineering Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-06-19
Anticipated expiration: 2029-11-13

Abstract

The utility model is suitable for a POE power supply technical field provides a POE power distribution device, include: the power supply system comprises a power supply end network cable interface, three power receiving end network cable interfaces, a transformer, three rectifying modules and three filtering modules. The alternating current energy output by the power supply interface is divided into three by the transformer, so that the power distribution is divided into three. Each alternating voltage is rectified by the rectifying module and filtered by the filtering module to obtain stable direct voltage, and the stable direct voltage is output to the corresponding power receiving interface. Therefore, this POE power distribution device can realize that a power supply unit supplies power for a plurality of powered devices, promotes the power supply reliability, only needs a power supply unit can realize the multichannel power supply, need not set up a plurality of power supply units, has simplified circuit structure, the cost is reduced.

Description

POE power distribution device

Technical Field

The utility model belongs to the technical field of the POE power supply, especially, relate to a POE power distribution device.

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 existing POE power supply device can only realize that one power supply device corresponds to one powered device, and cannot realize that one power supply device supplies power to a plurality of powered devices, which results in poor power supply reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a POE power distribution device for solve the relatively poor problem of current POE power supply unit's power supply reliability.

The utility model provides a POE power distribution device, include:

the power supply end network cable interface comprises a first signal interface and a power supply interface;

the three receiving end network cable interfaces are respectively a first receiving end network cable interface, a second receiving end network cable interface and a third receiving end network cable interface, the first receiving end network cable interface comprises a second signal interface and a first receiving interface, the second receiving end network cable interface comprises a third signal interface and a second receiving interface, and the third receiving end network cable interface comprises a fourth signal interface and a third receiving interface;

the transformer comprises a primary winding and three secondary windings, wherein the three secondary windings are respectively a first secondary winding, a second secondary winding and a third secondary winding;

the three rectifying modules are respectively a first rectifying module, a second rectifying module and a third rectifying module; and

the three filtering modules are respectively a first filtering module, a second filtering module and a third filtering module;

the first signal interface is connected with a second signal interface, a third signal interface and a fourth signal interface, the power supply interface is connected with the primary winding, the first secondary winding is connected with the alternating current side of the first rectifying module, and the direct current side of the first rectifying module is connected with the first power receiving interface through the first filtering module; the second secondary winding is connected with the alternating current side of the second rectifying module, and the direct current side of the second rectifying module is connected with the second power receiving interface through the second filtering module; the third secondary winding is connected to the ac side of the third rectifying module, and the dc side of the third rectifying module is connected to the third power receiving interface through the third filtering module.

Optionally, a first switch is disposed between the first secondary winding and the ac side of the first rectifying module, and a second switch is disposed between the first filtering module and the first power receiving interface; a third switch is arranged between the second secondary winding and the alternating current side of the second rectifying module, and a fourth switch is arranged between the second filtering module and the second power receiving interface; a fifth switch is arranged between the third secondary winding and the alternating current side of the third rectifying module, and a sixth switch is arranged between the third filtering module and the third power receiving interface.

Optionally, a first unidirectional conduction module is arranged between the first filtering module and the second switch, a second unidirectional conduction module is arranged between the second filtering module and the fourth switch, and a third unidirectional conduction module is arranged between the third filtering module and the sixth switch.

The utility model has the advantages that: the alternating current energy output by the power supply interface is divided into three parts through the transformer, so that the power is divided into three parts, and the three parts can be equal or unequal in voltage. Each alternating voltage is rectified by the rectifying module and filtered by the filtering module to obtain stable direct voltage, and the stable direct voltage is output to the corresponding power receiving interface. Therefore, this POE power distribution device can realize that a power supply unit supplies power for a plurality of powered devices, promotes the power supply reliability, only needs a power supply unit can realize the multichannel power supply, need not set up a plurality of power supply units, has simplified circuit structure, the cost is reduced. In addition, the first signal interface is connected with the second signal interface, the third signal interface and the fourth signal interface, and the first signal interface can perform signal interaction with the second signal interface, the third signal interface and the fourth signal interface, so that reliable transmission of signals is realized.

Drawings

Fig. 1 is a schematic structural diagram of a POE power allocation apparatus.

Detailed Description

This embodiment provides a POE power allocation device, includes: the power supply system comprises a power supply end network cable interface, three power receiving end network cable interfaces, a transformer, three rectifying modules and three filtering modules.

As shown in fig. 1, the power supply network cable interface 1 includes a first signal interface and a power supply interface, where the first signal interface is used for signal transmission and may be a conventional communication interface; the power supply interface is connected with power supply equipment at the PSE end to provide power.

The three receiving end network cable interfaces are respectively a first receiving end network cable interface 2, a second receiving end network cable interface 3 and a third receiving end network cable interface 4. The first receiving end network cable interface 2 comprises a second signal interface and a first receiving interface, the second receiving end network cable interface 3 comprises a third signal interface and a second receiving interface, and the third receiving end network cable interface 4 comprises a fourth signal interface and a third receiving interface. The second signal interface, the third signal interface and the fourth signal interface are used for signal transmission and can be conventional communication interfaces; the first power receiving interface, the second power receiving interface and the third power receiving interface are connected with corresponding power receiving equipment of the PD end to receive electric energy. Therefore, the POE power allocation apparatus can be connected to the powered devices of three PD terminals simultaneously.

The transformer 5 includes a primary winding and three secondary windings, which are a first secondary winding, a second secondary winding and a third secondary winding, respectively. The transformer provided with three secondary windings is a conventional transformer device and will not be described in detail here.

The three rectifier modules are a first rectifier module 7, a second rectifier module 12 and a third rectifier module 17, respectively. The three rectifying modules belong to a conventional rectifying circuit, and are not described in detail here.

Three filtering modules, namely a first filtering module 8, a second filtering module 13 and a third filtering module 18. The three filtering modules are used for filtering the voltage rectified and output by the corresponding rectifying module, so that the stability of the voltage is ensured, the quality of electric energy is improved, and the three filtering modules can be conventional filtering devices or devices.

The first signal interface is connected with the second signal interface, the third signal interface and the fourth signal interface, and the first signal interface can perform signal interaction with the second signal interface, the third signal interface and the fourth signal interface, so that reliable transmission of signals is realized. The power supply interface is connected with a primary winding of the transformer 5, a first secondary winding of the transformer 5 is connected with an alternating current side of the first rectifying module 7, and a direct current side of the first rectifying module 7 is connected with the first power receiving interface through the first filtering module 8. A second secondary winding of the transformer 5 is connected to the ac side of the second rectification module 12, and the dc side of the second rectification module 12 is connected to the second power receiving interface through the second filtering module 13. The third secondary winding of the transformer 5 is connected to the ac side of the third rectifying module 17, and the dc side of the third rectifying module 17 is connected to the third power receiving interface through the third filtering module 18.

Further, a first switch 6 is arranged between the first secondary winding and the alternating current side of the first rectifying module 7, and a second switch 9 is arranged between the first filtering module 8 and the first power receiving interface; a third switch 11 is arranged between the second secondary winding and the alternating current side of the second rectifying module 12, and a fourth switch 14 is arranged between the second filtering module 13 and the second power receiving interface; a fifth switch 16 is arranged between the third secondary winding and the ac side of the third rectifying module 17, and a sixth switch 19 is arranged between the third filtering module 18 and the third power receiving interface. The six switches may be conventional switches having two states, on and off. The purpose of these six switches is to: when the rectification module or the filtering module has faults and needs to be repaired or replaced, the rectification module or the filtering module is convenient to repair or replace, such as: when first rectifier module 7 or first filtering module 8 trouble needs to overhaul or change, disconnection first switch 6 and second switch 9, then overhaul or change, avoid causing the influence to other components in the POE power distribution device.

Moreover, a first unidirectional conducting module 10 is arranged between the first filtering module 8 and the second switch 9, a second unidirectional conducting module 15 is arranged between the second filtering module 13 and the fourth switch 14, and a third unidirectional conducting module 20 is arranged between the third filtering module 18 and the sixth switch 19. The three one-way conduction modules can be diodes, so that one-way conduction of electric energy is guaranteed, backflow of the electric energy is prevented, and the three one-way conduction modules can be omitted under the condition that the electric energy is one-way.

Since the transformer 5 includes three secondary windings, the voltages of the three secondary windings may be equal or different, and are divided as necessary. The three secondary windings of the transformer 5 are capable of dividing the voltage into three, i.e. the power into three. Based on the working principle of the transformer 5, the voltage output by the power supply interface is an alternating voltage. Then, the transformer 5 divides the ac voltage output by the power supply interface into three, so as to achieve power distribution into three parts, and each part of ac voltage is rectified by the corresponding rectifying module and filtered by the corresponding filtering module to obtain a stable dc voltage, and is output to the corresponding power receiving interface. Therefore, this POE power distribution device can realize that a power supply unit supplies power for a plurality of powered devices, promotes the power supply reliability.

Claims

1. A POE power distribution device, comprising:

2. The POE power distribution device according to claim 1, wherein a first switch is disposed between the first secondary winding and the ac side of the first rectifying module, and a second switch is disposed between the first filtering module and the first power receiving interface; a third switch is arranged between the second secondary winding and the alternating current side of the second rectifying module, and a fourth switch is arranged between the second filtering module and the second power receiving interface; a fifth switch is arranged between the third secondary winding and the alternating current side of the third rectifying module, and a sixth switch is arranged between the third filtering module and the third power receiving interface.

3. The POE power distribution device of claim 2, wherein a first unidirectional conducting module is disposed between the first filtering module and the second switch, a second unidirectional conducting module is disposed between the second filtering module and the fourth switch, and a third unidirectional conducting module is disposed between the third filtering module and the sixth switch.