CN201061090Y - DC Power Distribution Units and Communication Cabinets - Google Patents

Abstract

The utility model relates to communication equipment, in particular to a DC power distribution technology in a communication cabinet. Disclosed is a DC power distribution device, which can flexibly adjust the electrical connection relationship between power input terminals and protection switch connectors according to the total power of the communication cabinet and the number of high-power equipment and low-power equipment installed therein by using a transfer conductor , to meet the needs of various installation scenarios. Also disclosed is a communication cabinet including a DC power distribution box.

Description

DC Power Distribution Units and Communication Cabinets

technical field

The utility model relates to communication equipment, in particular to a DC power distribution technology in a communication cabinet.

Background technique

The DC power distribution device is generally called a DC power distribution box, which is installed in the communication product cabinet, and is used to divide the high-power current provided by the power supply into multiple low-power currents, and supply power to the equipment in the communication cabinet respectively.

As shown in Figure 1, it is the main structure of the existing DC power distribution box, generally including dual power supply lines for mutual backup, taking one of the power supply lines as an example: including the power input terminal 11 arranged outside the box body 10, the power input The terminal 11 is connected to the input terminals of multiple protective switches 13 through the conversion line 12, and the output terminal of each protective switch 13 is respectively connected to the output terminal 15 through the output line 14, and each output terminal 15 is respectively used as the power input of each device in the communication cabinet end. The conversion line 12 is a connector for the input end of the protection switch, one end is connected to the power input terminal 11, and the other end is connected to the input ends of a plurality of protection switches 13 in parallel, and the output end of each protection switch 13 is connected to an output terminal 15 through the output line 14, each An output terminal 15 can provide power distribution for a device, so the current provided by the power supply of each power supply line is shunted and input to multiple parallel devices. The protection switch 13 is usually an air switch, and the conversion line 12 is usually a cable.

For example, in the DC distribution box shown in Figure 1, each power supply line can supply power to four devices at the same time, and the current introduced by the power input terminal 11 is shunted to the four devices by the conversion line. When one of the power supply lines fails, the device can be Switch to another power supply line to continue power supply.

In the existing DC power distribution box, according to the rated current value of the power supply line, the DC power distribution box is designed into multiple models, which are used to supply power to the communication cabinets installed with different power equipment, and are limited by the rated current of one power supply line. , the number of output terminals 15 is also very limited, and with the improvement of equipment integration in the communication cabinet, the existing single DC power distribution box often cannot meet the power distribution requirements of all the equipment in the communication cabinet.

Utility model content

The embodiment of the utility model provides a DC power distribution device and a communication cabinet, which are used to adjust the power supply access mode according to the configuration quantity of different power devices in the communication cabinet.

A DC power distribution device, comprising: at least one first power supply line, at least one second power supply line, wherein:

The first power supply line includes a first power input terminal, a first conversion line, and at least one first output line, one end of the first conversion line is electrically connected to the first power input terminal, and the other end of the first conversion line one end is electrically connected to each first output line;

The second power supply line includes a second power supply input terminal, a second transition conductor, a second conversion line, and at least one second output line, one end of the second conversion line is electrically connected to the second power supply through the second transition conductor One of the input terminal, the first conversion line, and the first power input terminal, and the other end of the second conversion line are electrically connected to each second output line.

Preferably, the first power supply line further includes a first transition conductor, and one end of the first conversion line is electrically connected to the first power input terminal through the first transition conductor.

Based on the same technical idea, the utility model also provides a DC power distribution device, including: at least two power supply lines and at least one transfer conductor, wherein each power supply line includes a power input terminal, a conversion line and at least one output line, so One end of the conversion line is electrically connected to the power input terminal, the other end is electrically connected to each output line, and each transfer conductor is electrically connected to the conversion line of at least two power supply lines.

Based on the same technical idea, the utility model further provides a DC power distribution device, including: at least two power supply lines and at least one transfer conductor, wherein each power supply line includes a power input terminal, a conversion line and at least one output line, so One end of the conversion line is electrically connected to the power input terminal, the other end is electrically connected to each output line, and each transfer conductor is electrically connected to the power input terminals of at least two power supply lines.

The utility model also provides a communication cabinet, including the above-mentioned DC power distribution device.

The DC power distribution device provided by the embodiment of the utility model can flexibly adjust the power between the power input terminal and the conversion line according to the total power of the communication cabinet and the number of high-power equipment and low-power equipment installed in it by using the transfer conductor. Connection relationships to meet the needs of various installation scenarios.

Description of drawings

Fig. 1 is a schematic diagram of the structure and principle of the existing DC power distribution box;

Figure 2 is a schematic diagram of the implementation principle of the DC power distribution box with the addition of power supply lines provided by the embodiment of the utility model;

Fig. 3 is a schematic diagram of the implementation principle of the first DC power distribution box provided by the embodiment of the present invention;

Figure 4, Figure 5, Figure 6 and Figure 7 are a specific structural diagram of the first DC power distribution box provided by the embodiment of the present invention;

Fig. 8 is a schematic diagram of the implementation principle of the second DC power distribution box provided by the embodiment of the present invention;

Fig. 9 is a specific structural schematic diagram of the third type of DC power distribution box provided by the embodiment of the present utility model.

Detailed ways

With the continuous improvement of equipment integration in the communication industry, the number of devices installed in the communication equipment cabinet is increasing, and the single input of the power supply of the communication cabinet can no longer meet the demand. Therefore, it is necessary to increase the number of power supply lines in the communication cabinet. With one power supply line, the number of devices that can provide power distribution increases accordingly, so that a single DC power distribution box can provide power distribution to more devices.

For example, as shown in Figure 2, if there are four power supply lines arranged in parallel, and every two power supply lines can serve as backups for each other, then compared with the DC power distribution box shown in Figure 1, the power distribution capacity can be doubled. Each power supply line includes a power input terminal 21, a conversion line 22, and at least one output line 24. One end of the conversion line 22 is electrically connected to the power input terminal 21, and the other end is electrically connected to each output line 24, wherein the output line of each power supply line The number of 24 may be different, and it is used to provide power distribution for devices with different powers. Other electrical connection structures are identical, and a protection switch 23 may be provided between the conversion line 22 and each output line to protect the equipment. The input end of the protection switch 23 is connected to the conversion line 22, and the output end of the protection switch 23 is respectively connected to the output terminals 25 through the output lines 24, and each output terminal 25 is respectively used as a power input end of the communication cabinet equipment. The protection switch 23 is usually an air switch, and the conversion line 24 can be a cable or a metal guide bar, such as a copper bar.

As shown in Figure 3, on the basis of increasing the number of power supply lines, a schematic diagram of the structure principle of the first DC power distribution box provided by the embodiment of the present invention, the power supply lines include at least one first power supply line and at least one second power supply line, in:

The first power supply circuit includes: a first power input terminal 311, a first conversion circuit 321, and at least one output circuit 34, one end of the first conversion circuit 321 is electrically connected to the first power input terminal 311, and the first conversion circuit 321 The other end is electrically connected to each output line 34, and each output line 34 is connected to a power supply output terminal 35 for supplying power to a device;

The second power supply circuit includes a second power input terminal 312, a transfer conductor 36, a second conversion circuit 322, and at least one output circuit 34, and one end of the second conversion circuit 322 is electrically connected to the second power input terminal 312, the second conversion circuit 322 through the transfer conductor 36, Alternatively, the other end of the first switching line 321 and the second switching line 322 are electrically connected to each output line 34 , and each output line 34 is connected to a power output terminal 35 for supplying power to a device.

The connection between the first switching line 321 and each output line 34 , and between the second switching line 322 and each output line 34 are respectively connected through a protection switch 33 .

Referring to Fig. 3, the transition conductor 36 can be connected to the corresponding second power input terminal 312, or can be electrically connected to the adjacent first conversion line 321, if the transition conductor 36 is electrically connected to the first conversion line 321, It is possible to connect all the equipment that was originally distributed through the input power of the second power input terminal 312 to the first power input terminal 311 in parallel, and distribute power through the input power of the first power input terminal 311, expanding the first power input terminal The number of devices on 311 and the power of each device are small, which meets the power distribution requirements of low-power devices. If the conversion line transfer conductor 36 is electrically connected to the second power input terminal 312, the number of equipment for each power distribution is reduced, and the power can be increased. High-power equipment passes through the first power input terminal 311 and the second power input terminal 312 respectively. The input power is distributed to meet the power distribution requirements of high-power equipment.

Referring to FIG. 3 , in another alternative, one end of the second conversion line 322 is electrically connected to the second power input terminal 312 or the first power input terminal 311 through the transition conductor 36, if the transition conductor 36 and the first power supply The input terminal 311 is electrically connected, and it is still possible to connect all the equipment that was originally distributed through the input power of the power input terminal 312 to the first power input terminal 311 in parallel, and distribute power through the input power of the first power input terminal 311, which expands the The number of devices on the first power input terminal 311 meets the power distribution requirements of low-power devices.

Therefore, the DC power distribution box shown in Figure 3 can flexibly adjust the electrical connection relationship between the power input terminal and the conversion line according to the total power of the communication cabinet and the number of high-power equipment and low-power equipment installed in it, so as to meet various installation requirements. The needs of the scene, such as:

1. The total power of the communication cabinet is very large, and a small number of high-power equipment is installed in it;

2. The total power of the communication cabinet is small, and a large number of low-power devices are installed in it;

3. Individual high-power equipment and a large number of low-power equipment are installed in the communication cabinet.

The specific numbers of the first power supply lines and the second power supply lines can be adjusted as required.

The following will be described in detail with specific embodiments in conjunction with the accompanying drawings.

As shown in Figure 4, a specific structural diagram of the DC power distribution box provided in this embodiment includes six power supply lines, and each group of three is a backup for each other, and each group can be connected to three power supply lines, of which the first One group is connected to power sources A1, A2 and A3, and the second group is connected to power sources B1, B2 and B3. The electrical connection structures of the two sets of power supply lines are exactly the same. Taking one set as an example, it includes three power input terminals and three conversion lines. Each conversion line is connected to multiple protection switches. Shown) Correspondingly connect the output terminals of the power supply to provide power distribution for the device.

The protective switch is usually an air switch, and the number of air switches connected to each transfer line can be different. For example, in this example, the transfer lines corresponding to A1 and B1 are respectively connected to six air switches, and the transfer lines corresponding to A2 and B2 are respectively connected to two Air switch, two air switches are also connected to the conversion lines corresponding to A3 and B3, so that one set of power supply can provide power distribution for ten devices at the same time.

Referring to Figure 5, it is a schematic diagram of a connection relationship between each power input terminal and the conversion line in the oval part in Figure 4, the first conversion line 321 is directly electrically connected to the power input terminal of B1, and the other two second The conversion line 322 is electrically connected to the power input terminals of B2 and B3 respectively through the transfer conductor 36, and each input power supply can supply power for a corresponding number of devices, so that the current supported by the power distribution box reaches 100A*3=300A (Group A and Group B back up each other, and the current provided by each power supply is calculated as 100A), which meets the power distribution requirements of high-power equipment.

As shown in Figure 6, when a large number of low-power devices are installed in the communication cabinet, but the total power is relatively small, and a power supply line can meet the total power demand, taking the B-side connection as an example, the transfer conductor 36 can connect the adjacent The two conversion lines are electrically connected, wherein: the transfer conductor 36 is electrically connected between the first conversion line 321 and the second conversion line 322, and between the two second conversion lines 322, all equipment installed in the communication cabinet All are powered by the power supply B1, and the power of each device is small, which can meet the power distribution requirements of the number of low-power devices. And referring to Fig. 6, the power input terminals of the power sources B2 and B3 are not charged, which is safe and reliable.

As shown in Figure 7, when there are a small number of high-power devices plus some low-power devices in the communication cabinet, taking the connection on the B side as an example, the transfer conductor 36 corresponding to the power input terminal of the power supply B2 is electrically connected to the corresponding first terminal of B1. On the conversion line 321, the input terminal of the power supply B3 is electrically connected to the corresponding second conversion line 322 through the transfer conductor 36, so that the power supply B1 supplies power to many low-power devices at the same time through two parallel conversion lines, and the power supply B3 passes through A switching line supplies power to fewer high-power devices, thereby expanding the number of power supply circuits for low-power devices. Furthermore, as shown in FIG. 6 , the corresponding power input terminal of the power supply B2 is not charged, which is safe and reliable.

Referring to Fig. 5, Fig. 6 and Fig. 7, the connection methods of the 3 power supplies on side A are exactly the same, so the description will not be repeated.

The transfer conductor 36 is usually a metal shorting piece, such as a transfer copper sheet. The conversion lines are usually cables and metal strips, such as copper strips.

The transfer conductor and the conversion line, or the transfer conductor and the power input terminal are connected through screws and correspondingly provided screw holes, and the operation is convenient. And when the transfer conductor is electrically connected to the conversion line, the corresponding power input terminal is not charged, which is safe and reliable.

In the structure of the DC power distribution box shown in Figure 4, the transfer conductor in the elliptical part structure can be located inside the box or outside the box. If it is located outside the box, it can be easily adjusted according to the type of equipment in the communication cabinet. The access mode of each power supply. Of course, in order to ensure safety, an insulating cover can be set for protection.

It can be seen that the application of the first DC power distribution box provided by the embodiment of the present invention in the communication cabinet can flexibly adjust the access mode of each power supply according to the number of different power devices in the communication cabinet to meet the needs of different numbers of power devices in the communication cabinet. distribution needs.

As shown in Figure 8, the second type of DC power distribution box provided by the embodiment of the present invention, each power supply line includes: power input terminals, conversion lines, transfer conductors and at least one output line, the transfer conductors are electrically connected between the conversion line and the corresponding power input terminal, or electrically connect two adjacent conversion lines.

The transfer conductor can be arranged inside or outside the box. Refer to the adjustment method of the power supply connection mode of the first DC power distribution box, apply the second DC power distribution box provided by the embodiment of the utility model in the communication cabinet, and also flexibly adjust the power of each power supply according to the number of different power devices in the communication cabinet The access method will not be repeated here.

As shown in Figure 9, on the basis of the structure of the DC power distribution box shown in Figure 2, at least two power input terminals are electrically connected using a transfer conductor, for example: connect the power input terminals of B1 and B2 through a transfer conductor, so that The equipment distributed through the power supply B2 is connected to B1 in parallel, which increases the power distribution quantity of the low-power equipment. The transfer conductor is arranged outside the DC power distribution box, which can facilitate the adaptive adjustment of the connection mode of each power supply according to the change of the equipment type in the communication cabinet. Of course, in order to ensure safety, an insulating cover can be set for protection. It may also involve transfer conductors of different specifications to electrically connect three or more power input terminals at the same time. In this structure, the power input terminals that are not connected to the power supply are live, such as B2 is live, so in order to ensure safety, an insulating cover can be provided for protection.

As shown in Figure 9, the transfer conductor can also be arranged in the box body and electrically connected between at least two conversion lines to realize the adjustment of the power supply access mode. In this structure, the power input terminal that is not connected to the power supply is charged. Therefore, in order to ensure safety, an insulating cover can be set for protection.

After the DC power distribution box provided by the embodiment of the present invention is used in the communication cabinet to electrically connect at least two power input terminals or conversion lines, it can also flexibly adjust the connection of each power supply according to the number of different power devices in the communication cabinet. input method.

To sum up, in each embodiment provided by the utility model, based on the same technical idea, the electrical connection mode of the power supply line can be flexibly adjusted by using the transfer conductor, and can be adjusted according to the quantity relationship between high-power equipment and low-power equipment in the cabinet. Adjust the power access mode to meet the power distribution requirements of different numbers and sizes of power equipment in the communication cabinet.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (11)

1. A DC power distribution device, characterized in that it comprises: at least one first power supply line, at least one second power supply line, wherein: The first power supply line includes a first power input terminal, a first conversion line, and at least one first output line, one end of the first conversion line is electrically connected to the first power input terminal, and the other end of the first conversion line one end is electrically connected to each first output line; The second power supply line includes a second power supply input terminal, a second transition conductor, a second conversion line, and at least one second output line, one end of the second conversion line is electrically connected to the second power supply through the second transition conductor One of the input terminal, the first conversion line, and the first power input terminal, and the other end of the second conversion line are electrically connected to each second output line. 2. The DC power distribution device according to claim 1, wherein the first power supply line further comprises a first transition conductor, and one end of the first conversion line is electrically connected to the first transition conductor through the first transition conductor. the first power input terminal. 3. The DC power distribution device according to claim 1 or 2, further comprising a box, and the transfer conductor is located inside or outside the box. 4. The DC power distribution device according to claim 1 or 2, characterized in that, between the first conversion line and each first output line, and between the second conversion line and each second output line are respectively Electrically connected through a protective switch. 5. A DC power distribution device, characterized in that it includes: at least two power supply lines and at least one transfer conductor, wherein each power supply line includes a power input terminal, a conversion line and at least one output line, and one end of the conversion line It is electrically connected to the input terminal of the power supply, the other end is electrically connected to each output line, and each transfer conductor is electrically connected to the conversion line of at least two power supply lines. 6 . The DC power distribution device according to claim 5 , wherein the conversion circuit and each output circuit are respectively electrically connected through a protection switch. 7 . 7. A DC power distribution device, characterized in that it includes: at least two power supply lines and at least one transfer conductor, wherein each power supply line includes a power input terminal, a conversion line and at least one output line, and one end of the conversion line The other end is electrically connected to each output line, and each transfer conductor is electrically connected to the power input terminals of at least two power supply lines. 8. The DC power distribution device according to claim 7, characterized in that, the conversion circuit and each output circuit are respectively electrically connected through a protection switch. 9. A communication cabinet, comprising the DC power distribution device according to any one of claims 1-4. 10. A communication cabinet, comprising the DC power distribution device according to claim 5 or 6. 11. A communication cabinet, comprising the DC power distribution device according to claim 7 or 8.

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