Communication base station power supply device, method and system

Abstract

The present application relates to a power supply device, method, and system for a communication base station. The device includes: a centralized power distribution cabinet and a pole power distribution cabinet distributed at each base station corresponding to the antenna unit. The centralized power distribution cabinet includes: a centralized baseband processing unit and a centralized power supply. The centralized baseband processing unit is communicatively connected to the antenna unit. The centralized power supply includes: a battery pack and a bidirectional converter. The bidirectional converter is used to convert AC mains power into high-voltage DC power and charge the battery pack via the high-voltage DC power. The pole power distribution cabinet is connected to the centralized power distribution cabinet via an AC cable and a DC cable, respectively. The use of this method can improve the power supply efficiency of the base station.

Description

Technical Field

[0001] The present application relates to the field of power technology, and in particular to a power supply device, method and system for a communication base station. Background Art

[0002] With the advent of the 5G era, new communication equipment is placing higher demands on the power and density of telecommunications operators' computer rooms and base stations. Traditional base station power supply technology is no longer suitable for the construction or renovation of base stations and computer rooms in areas with high traffic volume.

[0003] Currently, existing DC remote power transmission technology relies on boosting the voltage of existing low-voltage battery platforms through one or more DC boosters for medium- and long-distance power transmission. Furthermore, base stations and equipment rooms typically require one or more cabinets near or within them for equipment installation and backup power. However, in densely populated areas like old urban areas, sufficient flat land near each base station is unavailable. The one-site-one-backup power solution works well with solutions where each base station has a BBU, RRU, and antenna. However, it is not suitable for the power requirements of a single macro site (equipped with a BBU) supporting multiple micro sites (without BBUs). Summary of the Invention

[0004] Based on this, it is necessary to provide a communication base station power supply device, method and system that can solve the problem of large power supply constraints of communication base stations in response to the above technical problems.

[0005] A power supply device for a communication base station, comprising:

[0006] Centralized power distribution cabinet and pole power distribution cabinets distributed at the corresponding antenna units of each base station;

[0007] The centralized power distribution cabinet includes: a centralized baseband processing unit and a centralized power supply;

[0008] The centralized baseband processing unit is communicatively connected to the antenna unit;

[0009] The centralized power supply includes: a battery pack and a bidirectional converter, wherein the bidirectional converter is used to convert AC mains power into high-voltage DC power and charge the battery pack via the high-voltage DC power;

[0010] The pole distribution cabinet is connected to the centralized distribution cabinet via an AC cable and a DC cable respectively.

[0011] In one embodiment, the pole power distribution cabinet includes: an AC contactor and a converter; the AC contactor is connected to the converter, the AC contactor is connected to the AC cable and the DC cable, and the converter is used to convert AC mains power or high-voltage DC power into DC power to power the antenna unit.

[0012] In one embodiment, the high voltage direct current is 190V-750V direct current.

[0013] In one embodiment, the centralized power supply further includes a functional circuit; the functional circuit is connected to the battery pack and the bidirectional converter respectively; one end of the functional circuit is connected to the pole distribution cabinet via a DC cable.

[0014] A method for powering a communication base station, comprising:

[0015] The centralized power distribution cabinet is connected to the AC mains, and the AC mains supplies power to the centralized power distribution cabinet;

[0016] The bidirectional converter converts the AC mains power into high-voltage DC power to charge the battery pack;

[0017] Powering the centralized baseband processing unit corresponding to the communication base station through the AC mains;

[0018] The centralized power distribution cabinet supplies power to the pole power distribution cabinets of the antenna units corresponding to the base stations.

[0019] In one embodiment, the centralized power distribution cabinet and the pole power distribution cabinet are connected via an AC cable and a DC cable; the AC cable is used to provide working power to the pole power distribution cabinet, and the DC cable is used to provide backup power to the pole power distribution cabinet.

[0020] In one embodiment, the method further includes: connecting the centralized power distribution cabinet and the pole power distribution cabinet via a DC cable; and providing a backup power supply and a working power supply to the pole power distribution cabinet via the DC cable.

[0021] In one embodiment, it also includes: the centralized power distribution cabinet and the pole power distribution cabinet are connected through a DC cable; the pole power distribution cabinets are all connected to the AC mains; the DC cable is used to provide a backup power supply to the pole power distribution cabinet, and the AC mains is used to provide a working power supply to the pole power distribution cabinet.

[0022] A power supply system for a communication base station, characterized in that the system includes: a power distribution module, used to access the AC mains through a centralized distribution cabinet, and supply power to the centralized distribution cabinet through the AC mains; a charging module, used to convert the AC mains into high-voltage DC power through a bidirectional converter to charge a battery pack; an internal power supply module, used to supply power to the centralized baseband processing unit corresponding to the communication base station through the AC mains; and an external power supply module, used to supply power to the pole distribution cabinet of the antenna unit corresponding to each base station through the centralized distribution cabinet.

[0023] In one embodiment, the external power supply module is also used to connect the centralized power distribution cabinet and the pole power distribution cabinet through an AC cable and a DC cable; the AC cable provides working power to the pole power distribution cabinet, and the DC cable provides backup power to the pole power distribution cabinet.

[0024] The above-mentioned communication base station power supply device, method and system can directly supply power to the remote pole distribution cabinet by converting AC mains power into high-voltage DC power without the need for multi-stage voltage boosting, thereby improving energy conversion efficiency and reducing installation costs. In addition, the power supply section of each base station is in a centralized distribution cabinet, and there is no need to set up a distribution cabinet for each base station, which facilitates the site selection of the distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a power supply for a communication base station in one embodiment;

[0026] Figure 2 A schematic flow chart of a method for powering a communication base station in one embodiment;

[0027] Figure 3 This is a schematic structural diagram of a first embodiment;

[0028] Figure 4 This is a schematic structural diagram of the second embodiment;

[0029] Figure 5 Schematic diagram of the structure of the third embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0031] In one embodiment, Figure 1 As shown, a communication base station power supply device is provided, including: a centralized power distribution cabinet 100 and pole power distribution cabinets 200 distributed at corresponding antenna units of each base station.

[0032] It is worth noting that the pole distribution cabinet 200 refers to the equipment installed corresponding to the base station antenna unit. Each antenna unit is equipped with a pole distribution cabinet. In addition, for a macro base station, one macro base station corresponds to multiple micro base stations. Among them, the macro base station is equipped with a centralized baseband processing unit (BUU), while the micro base station does not have a centralized baseband processing unit, only antenna units (such as AAU, RRU). Therefore, the centralized distribution cabinet 100 in this embodiment is provided with a centralized baseband processing unit 110 and a centralized power supply 120.

[0033] The centralized baseband processing unit 110 and the antenna unit together constitute the basic structure of the base station, and the centralized power distribution cabinet 100 can directly supply power to the centralized baseband processing unit 110 .

[0034] The centralized power supply 120 is used to provide backup power and / or power supply to the pole distribution cabinet 200. In this embodiment, a direct bidirectional converter 121 is used to convert AC mains power into high-voltage DC power. The converted high-voltage DC power can be used to power the battery pack 122 or directly power the pole distribution cabinet 200.

[0035] The pole distribution cabinet 200 is connected to the centralized distribution cabinet 100 via AC cables 310 and DC cables 320. Thus, the centralized distribution cabinet 100 supplies power to all pole distribution cabinets 200.

[0036] In the above-mentioned communication base station power supply device, by converting AC mains power into high-voltage DC power, it can directly supply power to the remote pole distribution cabinet without the need for multi-stage voltage boosting, thereby improving energy conversion efficiency and reducing installation costs. In addition, the power supply section of each base station is in a centralized distribution cabinet, so there is no need to set up a distribution cabinet for each base station, which facilitates the site selection of the distribution cabinet.

[0037] In one embodiment, the pole power distribution cabinet includes: an AC contactor and a converter, the AC contactor is connected to the converter, the AC contactor is connected to the AC cable and the DC cable, and the converter is used to convert AC mains power or high-voltage DC power into DC power to power the antenna unit.

[0038] In this embodiment, the AC contactor can connect both the AC and DC cables. However, in different operating modes, the power supply method of each cable varies. For example, when the AC cable is connected, the DC cable does not need to be connected. The converter acts as a rectifier, converting the AC mains power into DC power to power the antenna unit. When the AC cable is disconnected, the base station operates in backup power supply mode, and the DC cable is connected, converting the high-voltage DC power into DC power to power the antenna unit.

[0039] In another working mode, the AC contactor is only connected to the DC cable, and the DC cable provides both the working power supply and the backup power supply for the antenna unit.

[0040] In one embodiment, the high voltage direct current is 190V-750V direct current, so as to ensure direct long-distance transmission.

[0041] In one embodiment, the centralized power supply further includes a functional circuit; the functional circuit is connected to the battery pack and the bidirectional converter, respectively; one end of the functional circuit is connected to the pole distribution cabinet via a DC cable. The functional circuit implements a backup power function.

[0042] Additionally, functional circuits can be configured, such as adding a surge protector, to protect against lightning strikes.

[0043] Specifically, a protection circuit needs to be set up to measure the voltage and current of the circuit in real time. When the voltage and current parameters in the circuit exceed the normal operating range, the relay will be commanded to cut off the circuit to protect the centralized distribution cabinet.

[0044] In one embodiment, a method for powering a communication base station is provided, which can be performed in the embodiment of the communication base station power supply device described above, and includes the following steps:

[0045] Step 202: The centralized power distribution cabinet is connected to the AC mains, and the AC mains supplies power to the centralized power distribution cabinet.

[0046] Step 204 : Convert the AC mains power into high-voltage DC power through a bidirectional converter to charge the battery pack.

[0047] In this step, the battery pack is charged to provide backup power for the antenna unit and the centralized power distribution cabinet.

[0048] Step 206: Power the centralized baseband processing unit corresponding to the communication base station through AC mains power.

[0049] The centralized baseband processing unit is set in the centralized power distribution cabinet and can be directly powered by AC mains. This means that using AC mains for power supply does not mean directly powering the centralized baseband processing unit. The AC mains can also be rectified before powering the unit.

[0050] Step 208: Power the pole distribution cabinets corresponding to the antenna units of each base station through the centralized power distribution cabinet.

[0051] In one embodiment, a power supply method for a communication base station in a first manner is provided, such as Figure 3 As shown, the specific steps are as follows: The centralized power distribution cabinet and the pole power distribution cabinet are connected via AC and DC cables. The AC cable provides operating power to the pole power distribution cabinet, and the DC cable provides backup power to the pole power distribution cabinet. In this embodiment, the battery pack in the centralized power distribution cabinet is used only for backup power, and the AC cable from the centralized power distribution cabinet supplies power to the pole power distribution cabinet, facilitating power management.

[0052] In one embodiment, a power supply method for a communication base station in a second manner is provided, such as Figure 4 As shown, the specific steps are as follows: the centralized power distribution cabinet and the pole power distribution cabinet are connected through a DC cable, and the DC cable provides backup power and working power to the pole power distribution cabinet. In this embodiment, high-voltage DC power provides power for all power consumption of the base station.

[0053] In one embodiment, a power supply method for a communication base station in a third manner is provided, such as Figure 5 As shown, the specific steps are as follows: the centralized power distribution cabinet and the pole power distribution cabinet are connected via a DC cable. The pole power distribution cabinets are both connected to the AC mains. The DC cable provides backup power to the pole power distribution cabinets, and the AC mains provides operating power to the pole power distribution cabinets. In this embodiment, high-voltage DC power is used as the backup power supply for the base station.

[0054] It should be understood that although Figure 2 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 2 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0055] In one embodiment, a communication base station power supply system is provided, comprising: a power distribution module, a charging module, an internal power supply module, and an external power supply module, wherein:

[0056] A power distribution module is used to connect to the AC mains through a centralized power distribution cabinet and supply power to the centralized power distribution cabinet through the AC mains;

[0057] A charging module, configured to convert the AC mains power into high-voltage DC power via a bidirectional converter to charge the battery pack;

[0058] An internal power supply module, used to power the centralized baseband processing unit corresponding to the communication base station through the AC mains;

[0059] The external power supply module is used to supply power to the pole power distribution cabinets of the antenna units corresponding to each base station through the centralized power distribution cabinet.

[0060] In one embodiment, the external power supply module is also used to connect the centralized power distribution cabinet and the pole power distribution cabinet through an AC cable and a DC cable; the AC cable provides working power to the pole power distribution cabinet, and the DC cable provides backup power to the pole power distribution cabinet.

[0061] In one embodiment, the external power supply module is further used to connect the centralized power distribution cabinet and the pole power distribution cabinet through a DC cable; and provide backup power and working power to the pole power distribution cabinet through the DC cable.

[0062] In one embodiment, the external power supply module is also used to connect the centralized power distribution cabinet and the pole power distribution cabinet through a DC cable; the pole power distribution cabinets are all connected to the AC mains; the pole power distribution cabinet is provided with a backup power supply through the DC cable, and the pole power distribution cabinet is provided with a working power supply through the AC mains.

[0063] For the specific definition of the communication base station power supply system, please refer to the definition of the communication base station power supply method above, and will not be repeated here. Each module in the above-mentioned communication base station power supply system can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0064] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A communication base station power supply device, the device comprising: Centralized power distribution cabinet and pole power distribution cabinets distributed at the corresponding antenna units of each base station; The centralized power distribution cabinet includes: a centralized baseband processing unit and a centralized power supply; The centralized baseband processing unit is integrated into the centralized power distribution cabinet, transmits data signals with the antenna unit through an independent communication link, and does not participate in power supply control; the centralized baseband processing unit is communicatively connected with the antenna unit; The centralized power supply includes a battery pack and a bidirectional converter. The bidirectional converter converts AC mains power into high-voltage DC power, which is used to charge the battery pack. The high-voltage DC power is 190V-750V DC, suitable for distributed power supply scenarios with multiple pole distribution cabinets to reduce transmission losses. The pole distribution cabinet is connected to the centralized distribution cabinet via an AC cable and a DC cable respectively.

2. The device according to claim 1, characterized in that The pole distribution cabinet includes: an AC contactor and a converter; The AC contactor is connected to the converter, which is connected to the AC cable and the DC cable. The converter is used to convert AC mains power or high-voltage DC power into DC power for powering the antenna unit.

3. The device according to any one of claims 1 to 2, characterized in that The centralized power supply also includes a functional circuit; The functional circuit is connected to the battery pack and the bidirectional converter respectively; One end of the functional circuit is connected to the pole distribution cabinet through a DC cable.

4. A communication base station power supply method, applied to the communication base station power supply device according to any one of claims 1 to 3, characterized in that: include: Connecting to the AC mains through a centralized power distribution cabinet, and supplying power to the centralized power distribution cabinet through the AC mains; Converting the AC mains power into high-voltage DC power via a bidirectional converter to charge the battery pack; Powering the centralized baseband processing unit corresponding to the communication base station through the AC mains; The centralized power distribution cabinet supplies power to the pole power distribution cabinets of the antenna units corresponding to the base stations.

5. The method according to claim 4, characterized in that The centralized power distribution cabinet is used to supply power to the pole power distribution cabinets of the antenna units of each base station, including: The centralized power distribution cabinet and the pole power distribution cabinet are connected via AC cables and DC cables; The AC cable provides working power to the pole distribution cabinet, and the DC cable provides backup power to the pole distribution cabinet.

6. The method according to claim 4, characterized in that The centralized power distribution cabinet is used to supply power to the pole power distribution cabinets of the antenna units of each base station, including: The centralized power distribution cabinet and the pole power distribution cabinet are connected via a DC cable; The DC cable provides backup power and working power to the pole distribution cabinet.

7. The method according to claim 4, characterized in that The centralized power distribution cabinet is used to supply power to the pole power distribution cabinets of the antenna units of each base station, including: The centralized power distribution cabinet and the pole power distribution cabinet are connected via a DC cable; the pole power distribution cabinets are both connected to AC mains power; The DC cable provides a backup power supply to the pole distribution cabinet, and the AC mains provides a working power supply to the pole distribution cabinet.

8. A communication base station power supply system, used to implement the communication base station power supply method according to any one of claims 4 to 7, characterized in that: The system comprises: A power distribution module is used to connect to the AC mains through a centralized power distribution cabinet and supply power to the centralized power distribution cabinet through the AC mains; A charging module, configured to convert the AC mains power into high-voltage DC power via a bidirectional converter to charge the battery pack; An internal power supply module, used to power the centralized baseband processing unit corresponding to the communication base station through the AC mains; The external power supply module is used to supply power to the pole power distribution cabinets corresponding to the antenna units of each base station through the centralized power distribution cabinet.

9. The system according to claim 8, characterized in that The external power supply module is further used to connect the centralized power distribution cabinet and the pole power distribution cabinet through an AC cable and a DC cable; provide working power to the pole power distribution cabinet through the AC cable, and provide backup power to the pole power distribution cabinet through the DC cable.

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