CN214481943U

CN214481943U - Isolation power supply and 5G forward transmission gateway equipment

Info

Publication number: CN214481943U
Application number: CN202023328558.2U
Authority: CN
Inventors: 张欢; 李学成
Original assignee: Lenovo Future Communication Technology Chongqing Co Ltd
Current assignee: Lenovo Future Communication Technology Chongqing Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-22
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses an keep apart power and 5G pass gateway equipment before, keep apart the power and include: a first isolation device comprising: the first rectifying module is arranged on the high-voltage side of the isolation transformer; the inversion module is connected between the first rectification module and the isolation transformer; the low-voltage side of the isolation transformer is provided with a plurality of output ends, the input ends of a plurality of second rectifying modules are respectively connected with the output ends of the isolation transformer, and the output ends of the second rectifying modules are connected to a unit to be powered; and each second isolation device at least comprises a second rectification module arranged on the low-voltage side of the isolation transformer. Therefore, the rectifier modules on two sides of the isolation transformer are respectively and independently arranged in different isolation devices, the rectifier modules on the low-voltage side of the isolation transformer can be fixed close to the unit to be powered, the heat dissipation problem caused by the fact that the rectifier modules and the inverter modules on two sides of the isolation transformer are concentrated in a small space is avoided, and the heat dissipation capacity is improved.

Description

Isolation power supply and 5G forward transmission gateway equipment

Technical Field

The utility model relates to a power electronic technology field especially relates to an keep apart power and 5G pass gateway equipment before.

Background

For power-intensive or compact devices, many power electronics are configured in a relatively small volume, such as: and 5G forwarding gateway equipment. This kind of isolated device requires a power module with a small volume and requires +12V and-48V power sources, so the isolated power module must be used. For example: for a 5G forwarding gateway device, the power can reach about 624W, and assuming that the power efficiency is 90%, the input power of the power module is 693W, and the power consumption is about 69.3W. Such high power is dissipated mainly in the form of heat energy inside the power supply module of very small dimensions, causing a very high heat dissipation pressure for the power supply module. The extremely high heat consumption also has higher requirements on the type selection of the device, so that the cost of the power module is increased rapidly, and if the device does not meet the requirements of the power module, the operation reliability of the equipment is seriously influenced.

At present, the heat dissipation of the power module is mainly improved by increasing a high-power active heat dissipation fan and increasing the size of the power module. However, the high-power active cooling fan will increase the power consumption of the whole machine, bring about great noise pollution, and also greatly limit the installation environment. If the size of the whole machine is fixed, the size of a single plate of the whole machine can be reduced by increasing the size of the power supply module, and a structural component and a heat dissipation component need to be added, so that the weight and the cost of the whole machine of the equipment are increased, and the reliable installation of the equipment is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a for solve above-mentioned problem, creatively provides an isolation power and 5G pass gateway equipment before.

According to the utility model discloses an aspect provides an isolation power supply, isolation power supply includes: the first isolation device comprises a first rectifying module, an inverting module and an isolation transformer; a plurality of second isolation devices, each of the second isolation devices comprising at least one second rectification module; the second rectifying module is arranged on the low-voltage side of the isolation transformer; the first rectifying module is arranged on the high-voltage side of the isolation transformer; the inversion module is connected between the first rectification module and the isolation transformer; the low-voltage side of the isolation transformer is provided with a plurality of output ends, the input ends of the second rectifying modules are respectively connected with the output ends of the isolation transformer, and the output ends of the second rectifying modules are connected to a unit to be powered.

According to the utility model discloses an embodiment, first rectifier module is power frequency rectifier module.

According to the utility model discloses an embodiment, first isolating device still includes: and the power factor correction module is connected between the first rectification module and the inversion module.

According to the utility model discloses an embodiment, first isolating device still includes: and the filter capacitor module is connected with the first rectifying module in parallel.

According to the utility model discloses an embodiment, the second isolating device still includes: and the low-voltage filtering module is connected with the second rectifying module in parallel.

According to an embodiment of the present invention, the input voltage of the first rectifying module is 220V and the frequency is 50 Hz.

According to the utility model discloses the second aspect still provides a 5G fronthaul gateway equipment, 5G fronthaul gateway equipment includes above-mentioned isolation power.

According to an embodiment of the present invention, the isolation power supply includes two second isolation devices, each of the second isolation devices includes a second rectifying module.

According to an embodiment of the present invention, the first isolation device for isolating the power supply is independently disposed inside the 5G forwarding gateway device; one of the second isolation devices is configured on the control mainboard of the 5G forwarding gateway equipment; and the other second isolating device is configured on the independent power panel of the 5G forwarding gateway equipment.

According to the utility model discloses an embodiment, dispose in on the 5G fronthaul gateway equipment control mainboard the output voltage of second rectifier module is 12V.

The embodiment of the utility model provides an isolated power and 5G pass gateway equipment forward, with the rectifier module including isolation transformer both sides respectively independently set up in different isolating device, from this, can be directly near isolation transformer's low pressure side rectifier module and wait that power supply unit is fixed, the rectification of having avoided isolation transformer both sides and the heat dissipation problem that the contravariant module brought in less space are concentrated, effectively improve isolation power and 5G pass gateway equipment's heat-sinking capability before.

It is to be understood that the teachings of the present invention need not achieve all of the above-described benefits, but rather that certain aspects may achieve certain technical results, and that other embodiments of the present invention may achieve other benefits not mentioned above.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

Fig. 1 is a schematic diagram illustrating a structure of an isolated power supply according to an embodiment of the present invention;

fig. 2 is a schematic diagram showing the structure of an isolated power supply according to another embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a configuration of a 5G forwarding gateway device according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating heat dissipation of a 5G forwarding gateway device adopting a centralized heat dissipation structure;

fig. 5 shows a schematic diagram of a heat dissipation situation of a 5G forwarding gateway device according to an embodiment of the present invention.

Detailed Description

The principles and spirit of the present invention will be described with reference to a number of exemplary embodiments. It should be understood that these embodiments are given only for the purpose of enabling those skilled in the art to better understand and to implement the invention, and are not intended to limit the scope of the invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The technical solution of the present invention will be further elaborated with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows a schematic diagram of a composition structure of an isolated power supply according to an embodiment of the present invention.

Referring to fig. 1, in this embodiment of the present invention, the isolated power supply includes: the first isolation device 10 comprises a first rectifying module 101, an inverting module 102 and an isolation transformer 103; a plurality of second isolation devices 20, each second isolation device 20 at least includes a second rectification module 201, and the second rectification module 201 is disposed on the low-voltage side of the isolation transformer 103; the first rectifying module 101 is arranged on the high-voltage side of the isolation transformer 103; an inverter module 102 connected between the first rectifier module 101 and the isolation transformer 103; the low-voltage side of the isolation transformer 103 has a plurality of output terminals, the input terminals of the second rectifying modules 201 are respectively connected with the output terminals of the isolation transformer 103, and the output terminals of the second rectifying modules 201 are connected to a unit to be powered.

Fig. 1 is only the basic embodiment of the present invention, and on the basis of fig. 1, the present invention further provides another optimized embodiment, specifically, fig. 2 shows a schematic diagram of a structure of another embodiment of the present invention.

As shown in fig. 2, in this embodiment of the present invention, a first separator 10 and two second separators 20 are included. The input voltage of the first rectification module 101 of the isolated power supply is AC220V with a frequency of 50 Hz. The first rectifying module 101 is an industrial frequency rectifying module, and comprises a rectifying bridge formed by four Diodes D1, D2, D3 and D4, wherein the Diodes can adopt GBJ2010 devices of Diodes of mainstream device manufacturers in the industry.

The first isolation device 10 further comprises: the power factor correction module PFC and the filter capacitor module are both connected between the first rectification module 101 and the inversion module 102.

The filter capacitor module may be disposed between the first rectifying module 101 and the power factor correction module PFC. The filter capacitor module comprises a capacitor C1, and the capacitor C1 is connected in parallel with the first rectifier module 101.

The inverter module 102 includes four switching tubes M1, M2, M3, and M4.

The second isolation device 20 further comprises: and the low-voltage filtering module is connected with the second rectifying module 201 in parallel.

In a similar way, based on the above isolation power supply, the embodiment of the utility model provides a 5G passes gateway equipment before still providing, 5G passes gateway equipment before includes above-mentioned isolation power supply.

In this embodiment of the present invention, the isolated power source includes two second isolation devices 20, and each second isolation device 20 includes one second rectification module 201. The first isolation device 10 for isolating the power supply is independently arranged inside the 5G forwarding gateway device. One of the second isolation devices 20 is configured on the control motherboard of the 5G forward gateway device, and the output voltage of the second rectification module 201 is 12V, which is used to provide 12V direct current for the control motherboard of the 5G forward gateway device. The other second isolation device 20 is configured on the independent power board of the 5G forwarding gateway device, and can supply power to other circuit boards or devices and the like which need to supply power. For example: the output voltage of the second isolation device 20 is-48V, and is used for supplying power to a Remote Radio Unit (RRU) of the base station.

It should be noted that, in fig. 3, a PFC module is further connected between the 220V rectifier module and the inverter module, which is a preferred embodiment of the 5G forward gateway device of the present invention, and the basic function of the 5G forward gateway device of the present invention can also be realized without this module.

Here, it should be noted that: the above description of the embodiment of 5G is similar to the foregoing description of the embodiment of the isolated power supply shown in fig. 1 to 2, and has similar beneficial effects to the foregoing embodiment of the isolated power supply shown in fig. 1 to 2, and therefore, the description thereof is omitted. For the technical details not disclosed in the embodiment of the isolated power supply of the present invention, please refer to the description of the embodiment of the isolated power supply shown in fig. 1 to 2 for understanding, and therefore, for brevity, the details are not repeated.

Fig. 4 shows a heat dissipation situation schematic diagram of 5G fronthaul gateway equipment adopting centralized heat dissipation structure, and conventional 5G fronthaul gateway equipment mainly adopts the centralized heat dissipation structure as shown in fig. 4 among the prior art, and fig. 5 shows the utility model relates to a heat dissipation situation schematic diagram of 5G fronthaul gateway equipment, as can be known from fig. 5, the utility model discloses in 5G fronthaul gateway equipment with two second isolating device 20 respectively overall arrangement on 5G fronthaul gateway equipment's control mainboard and independent power supply board, can carry out the distributed heat dissipation.

With reference to fig. 4 and 5, pass gateway equipment before 5G to adopt concentrated heat radiation structure among the prior art and the utility model discloses in can carry out the radiating 5G that the distributing type dispels the heat pass gateway equipment's the heat dissipation condition contrast to more clearly illustrate the beneficial effect of the embodiment of the utility model. Taking the same key devices adopted by the 5G forward gateway device in fig. 4 and 5 as an example, the heat dissipation conditions of the two devices are analyzed.

The 220V rectifying module is realized by a rectifying bridge formed by 4 Diodes, for example, a GBJ2010 device of Diodes of a mainstream device manufacturer in the industry is taken as an example, the rated forward current of the rectifying module is 20A, and the forward voltage drop of the rectifying module is 1.05V. Taking the input power of 693W as an example, the current flowing through the 220V rectifier module is about 3.15A, and the power consumption is about 6.62W. The PFC module is mature at present, the efficiency of the PFC module can reach 99% generally, and the power consumption of the PFC module is about 6.93W. The inverter module has high power consumption, mainly high frequency, frequent on and off of a switching device, and large power consumption is easily caused if the design is not good or a zero voltage switch ZVS and a zero current switch ZCS are not designed. At the current level of the industry, the estimated efficiency is 98%, and the power consumption is about 13.86W. The isolation transformer is generally considered as an ideal transformer, and the main power consumption of the isolation transformer is the internal resistance of the coil, which can be ignored.

The low-voltage rectifier module has high power consumption because the current is the output level required by the unit to be powered on at the low-voltage side of the isolation transformer, and the output current is very large. Taking the GBJ2010 device of the manufacturer Diodes as an example again, the power consumption of the two second rectifier modules will reach 23.1W and 16.8W, respectively, when the outputs of the two second rectifier modules are-48V/11A and 12V/8A, respectively.

From the above analysis, it can be seen that the power consumption of the entire power module can be collated as shown in table 1 below.

TABLE 1

As can be seen from table 1 above, the main power consumption of the isolated power supply comes from the diode of the rectifier module and the switching tube of the inverter module. The overall power consumption of the isolated power supply in table 1 does not reach 100% because the power of the part consumed by the signal processing device is not calculated.

Referring to fig. 4, in the prior art, heat of an isolation power supply of a conventional 5G forward gateway device is completely concentrated on each module inside the isolation power supply, and the isolation power supply itself only occupies a very small part of the whole 5G forward gateway device, so that heat dissipation is very difficult, and a strong wind current is required to reduce the heat inside the 5G forward gateway device.

And refer to fig. 5, the utility model discloses well 5G passes before the heat of gateway device's isolation power can distribute on 5G passes before the inside control mainboard and the independent power strip of gateway device. More than half of heat generated by the isolation power supply in the 5G forward-transmission gateway equipment is uniformly distributed to the part outside the isolation power supply, and only the rest part of heat is still inside the first isolation device 10 of the isolation power supply, so that natural heat dissipation can be performed through a main body shell of the isolation power supply and the heat dissipation teeth of the 5G forward-transmission gateway equipment case, or only small wind current is used for active heat dissipation, and a good heat dissipation effect can be achieved. The main body housing for isolating the power supply is a housing outside the first isolation device 10.

Furthermore, the utility model discloses an only will set up the second isolating device including isolation transformer low pressure side rectifier module on 5G fronthaul gateway equipment's control mainboard in the scheme, second isolating device 20's principal apparatus only includes 4 rectifier diodes or 1 integrated rectifier pile that is used for realizing 4 rectifier diode functions and constitutes, so occupation space is very little, need not to change the original control mainboard etc. of 5G fronthaul gateway equipment design, or only change simply can. The scheme has strong feasibility and high practical value.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An isolated power supply, comprising:

the first isolation device comprises a first rectifying module, an inverting module and an isolation transformer;

a plurality of second isolation devices, each of the second isolation devices comprising at least one second rectification module; the second rectifying module is arranged on the low-voltage side of the isolation transformer;

the first rectifying module is arranged on the high-voltage side of the isolation transformer;

the inversion module is connected between the first rectification module and the isolation transformer;

the low-voltage side of the isolation transformer is provided with a plurality of output ends, the input ends of the second rectifying modules are respectively connected with the output ends of the isolation transformer, and the output ends of the second rectifying modules are connected to a unit to be powered.

2. The isolated power supply of claim 1, wherein the first rectification module is a power frequency rectification module.

3. The isolated power supply of claim 1, wherein the first isolation device further comprises:

and the power factor correction module is connected between the first rectification module and the inversion module.

4. The isolated power supply of claim 1, wherein the first isolation device further comprises:

and the filter capacitor module is connected with the first rectifying module in parallel.

5. The isolated power supply of claim 1, wherein the second isolation device further comprises:

and the low-voltage filtering module is connected with the second rectifying module in parallel.

6. The isolated power supply of claim 1, wherein the input voltage of the first rectification module is 220V and the frequency is 50 Hz.

7. A5G forwarding gateway device, characterized in that the 5G forwarding gateway device comprises an isolated power supply according to any one of claims 1-6.

8. The 5G forwarding gateway apparatus of claim 7 wherein the isolated power supply comprises two second isolation devices, each of the second isolation devices comprising a second rectification module.

9. The 5G forwarding gateway device of claim 8,

the first isolation device for isolating the power supply is independently configured inside the 5G forwarding gateway equipment;

one of the second isolation devices is configured on the control mainboard of the 5G forwarding gateway equipment;

and the other second isolating device is configured on the independent power panel of the 5G forwarding gateway equipment.

10. The 5G forwarding gateway device according to claim 9, wherein an output voltage of the second rectification module configured on the control motherboard of the 5G forwarding gateway device is 12V.