Power source device and base station

Abstract

Provided in the present application are a power source device and a base station, which are capable of selecting a port that matches a terminal device, that is, capable of determining a matching relationship between the port and the terminal device, thereby not only reducing a workload, but also avoiding unnecessary losses caused by erroneous shutdown of the terminal device. The power source device may comprise a first bus, a plurality of inductors, a plurality of collection units, a plurality of switches, a plurality of ports and a controller. The plurality of inductors, the plurality of collection units, the plurality of switches and the plurality of ports correspond to each other on a one-to-one basis. Each of the plurality of ports may be connected to the first bus by means of a collection unit and an inductor. Each of the plurality of switches may be connected between the first bus and a port. Each collection unit can be configured to collect an output current of the port and transmitting same to the controller. The controller can be configured to select first ports, which are each in a state of supplying power to a terminal device, from among the plurality of ports on the basis of respective output currents of the plurality of ports, transmit alternating-current signals to terminal devices by means of controlling the switches, which correspond to the first ports, to close in sequence, and select, on the basis of acquired amplitudes of the alternating-current signals of the terminal devices and acquired address information of the terminal devices, ports that match the terminal devices.

Description

Power supply equipment and base stations

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 25, 2023, with application number 202311243145.X and application name “Power Supply Equipment and Base Station”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of power supply technology, and more particularly, to a power supply device and a base station. Background Art

[0003] With the rapid development of 4G and 5G communication technologies, the power consumption of base stations has increased significantly. A base station can include multiple terminal devices such as a radio remote unit and a baseband processing unit, and multiple terminal devices can be powered by a power supply device. In order to reduce the total power consumption of a base station, related technologies often install circuit breakers such as air switches on the power supply cables between the power supply device and the terminal devices to shut down some terminal devices to achieve energy saving in the base station. However, due to the large number of terminal devices and the long power supply cables (even up to 150 meters), it is difficult to obtain the model of the terminal devices and it is impossible to determine the matching relationship between the ports of the power supply device and the terminal devices. On the one hand, manual statistics on the matching relationship between the ports and the terminal devices are required, which is labor-intensive and complex. On the other hand, in the process of shutting down some terminal devices, it is easy to cause unnecessary losses due to the terminal devices being shut down by mistake.

[0004] Therefore, there is an urgent need for a technical solution that can determine the matching relationship between the port and the terminal device, thereby reducing the workload and avoiding the terminal device from being shut down by mistake.

[0005] Summary of the Invention

[0006] The present application provides a power supply device and a base station that can select a port that matches a terminal device, that is, can determine the matching relationship between the port and the terminal device, which not only reduces the workload but also avoids unnecessary losses caused by incorrect shutdown of the terminal device.

[0007] In a first aspect, the present application provides a power supply device that can be used to power multiple terminal devices. The power supply device may include a first bus, multiple inductors, multiple acquisition units, multiple switches, multiple ports, and a controller.

[0008] The plurality of inductors, the plurality of acquisition units, the plurality of switches and the plurality of ports correspond one to one. In other words, the number of inductors, acquisition units, switches, ports and controllers can be equal.

[0009] Optionally, each of the plurality of ports may be connected to the first busbar via a data acquisition unit and an inductor. That is, the data acquisition unit and the inductor may be located between the port and the first busbar. Each of the plurality of switches may be connected between the first busbar and the port.

[0010] Furthermore, each of the multiple acquisition units can be used to: acquire the output current of the port and transmit it to the controller.

[0011] The controller can be configured to select a first port from the plurality of ports that is in a state of powering a terminal device based on the output currents of the respective ports. In other words, the first port can be used to indicate which of the plurality of ports is in a state of powering a terminal device. It is conceivable that a power supply device may include multiple ports, each of which can power a terminal device. However, in a scenario where a port is not connected to a terminal device, the port can be idle. The controller can also be configured to transmit an AC signal to the terminal device by controlling the switches corresponding to the first port to close in sequence, and select a port that matches the terminal device based on the amplitude and address information of the AC signal obtained from the terminal device.

[0012] Each of the multiple inductors can be used to suppress the AC signal transmitted by the switch from being transmitted to the first bus. It is conceivable that, because different power devices can be connected to the same bus or share a common ground terminal, the inductor can prevent the AC signal from being transmitted to other power devices through the bus or ground terminal, thereby preventing crosstalk signals from being generated in other power devices.

[0013] The power supply device provided in the present application can not only realize power supply of multiple terminal devices through multiple inductors, multiple acquisition units, multiple switches, multiple ports and controllers, but also, during the power supply process, can select a port that matches the terminal device from multiple ports, that is, it can determine the matching relationship between the port and the terminal device, which not only reduces the workload but also avoids unnecessary losses caused by incorrect shutdown of the terminal device.

[0014] In one possible implementation, the controller may be specifically configured to select, from the plurality of ports, a port having an output current greater than a preset current threshold as a first port. It is understood that the port having an output current less than or equal to the preset current threshold may be in an idle state, not supplying power to the terminal device.

[0015] The controller can also be configured to sequentially control the switches corresponding to the first ports to close, thereby transmitting the AC signal to the terminal devices through the first ports via the switches corresponding to the first ports, and obtaining the amplitude and address information of the AC signal from each terminal device. In other words, when the switches corresponding to the first ports are closed, the switches can couple the AC signal to the first ports, and the amplitude of the AC signal can be obtained for each terminal device.

[0016] The controller may also be configured to: select, according to the address information, from the plurality of first ports a port into which an AC signal corresponding to a maximum amplitude of the plurality of AC signals is injected as a port matching the terminal device.

[0017] In another possible implementation, the power supply device further includes at least one capacitor pair, and the capacitor pair may be connected to the switch.

[0018] The capacitor pair can be used to couple the AC signal to the corresponding port of the switch through the switch.

[0019] Furthermore, the power supply device may further include at least one transceiver, which may be connected to the controller and may also be connected to the capacitor pair.

[0020] The transceiver can be used to transmit an AC signal to the capacitor pair, and then couple the AC signal to the port through the capacitor pair.

[0021] It is conceivable that, since the capacitor has the function of passing AC and blocking DC, the capacitor pair can also prevent the DC power from the first bus from being coupled to the transceiver.

[0022] In one example, the AC signal may be a power line carrier (PLC) signal (which may be referred to as a PLC signal for short). Of course, the AC signal may also be other signals, which is not limited in this application.

[0023] In another example, any of the multiple acquisition units can be a sensor, a mutual inductor, or a current divider. Of course, the acquisition unit can also be of other types, which is not limited in this application.

[0024] Optionally, the inductance value and type of any one of the multiple inductors can be selected according to the frequency of the AC signal.

[0025] For example, any of the multiple switches can be a relay or a contactor. Of course, the switch can also be of other types, which is not limited in this application.

[0026] In one possible implementation, the first busbar may include a first positive busbar and a first negative busbar. The switch may include a first node, a second node, and a third node. The first node may be configured to receive an AC signal. The second node may be configured to connect between the first negative busbar and the port. The third node may be configured to connect between the first positive busbar and the port.

[0027] Furthermore, the connection relationship between the port, inductor, switch, first positive busbar, and first negative busbar can satisfy the following: the port is connected to the first positive busbar via the inductor, and the third node is connected between the inductor and the port; or the port is connected to the first negative busbar via the inductor, and the second node is connected between the inductor and the port. In other words, the connection relationship between the port, inductor, switch, first positive busbar, and first negative busbar can satisfy either of the above two examples.

[0028] For example, the terminal device may be a remote radio unit or a baseband processing unit. In other words, the power supply device provided in this application may power the remote radio unit or the baseband processing unit. Of course, the terminal device may also be other devices, and this application does not limit this.

[0029] In a second aspect, the present application provides a base station, which may include multiple terminal devices and a power supply device provided by the first aspect and its possible implementations. The power supply device may be connected to each of the multiple terminal devices to supply power to each terminal device.

[0030] Each power supply device is configured to obtain direct current from the second bus and provide the direct current to each power supply device in the plurality of power supply devices.

[0031] Exemplarily, the base station may include multiple power supply devices. Each of the multiple power supply devices may be connected to the second bus, that is, each power supply device may be connected to the same bus. Alternatively, each power supply device may share a common ground terminal.

[0032] It is conceivable that when the base station includes multiple power supply devices and each power supply device supplies power to multiple terminal devices, the controller of the power supply device can select the first port whose amplitude of the AC signal output by the first port is greater than a preset amplitude threshold as an alternative matching port after obtaining the amplitude of the AC signal output by the first port, and then select the port into which the AC signal corresponding to the largest amplitude is injected from the alternative matching ports as the port that matches the terminal device. In this way, by narrowing the selection range of the first port, ports that may be alternative matching ports in other terminal devices can be excluded, thereby improving the matching efficiency between the port and the terminal device.

[0033] It should be understood that the second aspect of this application is consistent with the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar, which will not be repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] FIG1 is a schematic structural diagram of a power supply device 100 according to an embodiment of the present application;

[0036] FIG2 is a flow chart of a controller implementing matching between a terminal device and a port in an embodiment of the present application;

[0037] FIG3 is another schematic structural diagram of the power supply device 100 in an embodiment of the present application;

[0038] FIG4 is another schematic structural diagram of the power supply device 100 in an embodiment of the present application;

[0039] FIG5 is another schematic structural diagram of the power supply device 100 in an embodiment of the present application;

[0040] FIG6 is a schematic structural diagram of the base station 10 in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solution in this application will be described below with reference to the accompanying drawings.

[0042] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0043] The terms "first," "second," and the like in the description, embodiments, claims, and drawings of this application are used solely for descriptive purposes and are not to be construed as indicating or implying relative importance or order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, inclusion of a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0044] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0045] With the rapid development of 4G and 5G communication technologies, the power consumption of base stations has increased significantly. A base station can include multiple terminal devices such as a radio remote unit and a baseband processing unit, and multiple terminal devices can be powered by a power supply device. In order to reduce the total power consumption of a base station, related technologies often install circuit breakers such as air switches on the power supply cables between the power supply device and the terminal devices to shut down some terminal devices to achieve energy saving in the base station. However, due to the large number of terminal devices and the long power supply cables (even up to 150 meters), it is difficult to obtain the model of the terminal devices and it is impossible to determine the matching relationship between the ports of the power supply device and the terminal devices. On the one hand, manual statistics on the matching relationship between the ports and the terminal devices are required, which is labor-intensive and complex. On the other hand, in the process of shutting down some terminal devices, it is easy to cause unnecessary losses due to the terminal devices being shut down by mistake.

[0046] To overcome the above-mentioned shortcomings, an embodiment of the present application provides a power supply device that can be used to power multiple terminal devices T. As shown in Figure 1, the power supply device 100 may include a first bus, multiple inductors, multiple data acquisition units, multiple switches, multiple ports, and a controller C. The controller C can be connected to the multiple switch units and the multiple data acquisition units to control the opening and closing of the switch units and to enable communication with the data acquisition units.

[0047] The multiple inductors, the multiple acquisition units, the multiple switches, and the multiple ports correspond one to one. That is, the number of inductors, acquisition units, switches, ports, and controller C can be equal.

[0048] The first bus includes a first positive bus bus1+ and a first negative bus bus1-. The multiple inductors may include inductor L11, inductor L12, ..., inductor L1n, for a total of n inductors. The multiple acquisition units may include acquisition unit I11, acquisition unit I12, ..., acquisition unit I1n, for a total of n acquisition units. The multiple switches may include switch Q11, switch Q12, ..., switch Q1n, for a total of n switches. The multiple ports may include port P11, port P12, ..., port P1n, for a total of n ports. The multiple terminal devices may include terminal device T11, terminal device T12, ..., terminal device T1n, for a total of n terminal devices. It will be understood that each port can power one terminal device, and the number of terminal devices may be less than the number of ports. The embodiment provided in FIG. 1 of the present application is described using the example where the number of terminal devices is equal to the number of ports.

[0049] Optionally, each of the n ports can be connected to the first bus (which can be the first positive bus bus1+ or the first negative bus bus1-) via a corresponding acquisition unit and a corresponding inductor. That is, the acquisition unit and the inductor can be located between the port and the first bus (which can be the first positive bus bus1+ or the first negative bus bus1-). Each switch can be connected between the first bus (which can be the first positive bus bus1+ or the first negative bus bus1-) and the port.

[0050] Furthermore, each acquisition unit (eg, acquisition unit I11 ) may be configured to: acquire the output current of a port (eg, port P11 ) and transmit the current to the controller C.

[0051] The controller C may be configured to select a first port from the ports P11 to P1n that is in a state of supplying power to a terminal device (eg, the terminal device T11 and the terminal device T12 ) according to the respective output currents of the ports P11 to P1n.

[0052] That is, the first port can be used to indicate the port among ports P11 to P1n that is in a state of supplying power to the terminal device. It is conceivable that in a scenario where a port is not connected to a terminal device, the port can be in an idle state, that is, the port is not the first port.

[0053] The controller C can also be used to: transmit an alternating current (AC) signal (which can be simply referred to as an AC signal) to the terminal devices T11 to T1n by controlling the switches corresponding to the first ports to close in sequence, and select a port that matches the terminal device based on the amplitude of the AC signal obtained from the terminal device and the address information of the terminal device.

[0054] Each inductor (eg, inductor L11 ) can be used to suppress the AC signal transmitted by the switch (eg, switch Q11 ) from being transmitted to the first bus (ie, the first positive bus bus1+ or the first negative bus bus1 −).

[0055] It is conceivable that, since different power devices can be connected to the same bus or share a common ground terminal, that is, multiple power devices can power multiple terminal devices, then inductors (such as inductor L11) can prevent AC signals from being transmitted to other power devices through the bus (i.e., the first positive bus bus1+ and the first negative bus bus1-) or the ground terminal, thereby preventing crosstalk signals from being generated in other power devices. Therefore, inductors L11 to L1n can be called decoupling inductors.

[0056] The power supply device 100 provided in the embodiment of the present application can not only realize power supply of multiple terminal devices through multiple inductors, multiple acquisition units, multiple switches, multiple ports and a controller C, but also, during the power supply process, can select a port that matches the terminal device from multiple ports. That is to say, the power supply device 100 provided in the embodiment of the present application can determine the matching relationship between the port and the terminal device, which not only reduces the workload, but also avoids unnecessary losses caused by the incorrect shutdown of the terminal device.

[0057] In some embodiments, the controller C may be specifically configured to select a port from the ports P11 to P1n whose output current is greater than a preset current threshold as the first port. It is understood that a port whose output current is less than or equal to the preset current threshold may be in an idle state, not supplying power to any terminal device.

[0058] For example, if the output current of the port P11 is greater than a preset current threshold, the port P11 may be the first port.

[0059] Schematically, the first port can be one or more. The following describes the situation:

[0060] Case 1: When there is only one first port (for example, port P11 as the first port), the first port is the port that matches the terminal device T11.

[0061] Case 2: When there are multiple first ports, the controller C can be used to control the switches corresponding to each first port to close in sequence, transmitting the AC signal through the first port to each terminal device via the switches corresponding to the first ports, and obtaining the amplitude and address information of the AC signal from each terminal device. In other words, when the switches corresponding to the first ports are closed, the switches can couple the AC signal to the first ports.

[0062] It can be understood that, since the ports P11 to P1n are all connected to the first bus, when a switch is closed, the amplitude of the AC signal will exist in the terminal devices 11 to T1n.

[0063] For example, port P11 and port P12 are first ports. Therefore, the controller C can control the switch Q11 (i.e., the switch corresponding to port P11) to close, coupling the AC signal to port P11 through the switch Q11, and obtaining the amplitude and address information of the AC signals of the terminal devices T11 and T12, respectively.

[0064] The controller C can also control the switch Q12 (ie, the switch corresponding to the port P12) to close, couple the AC signal to the port P12 through the switch Q12, and obtain the amplitude and address information of the AC signals of the terminal devices T11 and T12.

[0065] Furthermore, the controller C can also be configured to, based on the address information of each terminal device, select, from the plurality of first ports, the port into which the AC signal corresponding to the maximum AC signal amplitude is injected as the port matching the terminal device. It can be seen that the power supply device 100 can determine the matching relationship between the terminal device T11 and the port P11 through the controller C.

[0066] Specifically, referring to FIG2 , the controller C can achieve matching between the terminal device and the port by controlling the switch to close by the following steps:

[0067] Step S101: the power supply device 100 requests to be matched with the terminal device.

[0068] Step S102: Set the initial value of port P1i to 1; where i=1, 2, ..., n.

[0069] Step S103: execute i=i+1.

[0070] Step S104: determine whether the output current of the port P1i is greater than a preset current threshold value. If so, execute step S105; otherwise, return to step S103.

[0071] Step S105 : the controller C controls the switch Q1i to be closed and transmit the AC signal to each port.

[0072] Step S106: Acquire the amplitude and address information of the AC signal of each terminal device.

[0073] Step S107: Determine whether i>n is satisfied. If so, execute step S108; otherwise, return to step S103.

[0074] Step S108: According to the address information, a port into which an AC signal corresponding to a maximum amplitude among the multiple AC signal amplitudes is injected is selected as a port matching the terminal device.

[0075] In other embodiments, referring to FIG1 , the power supply device 100 may further include a capacitor pair. The capacitor pair includes capacitor C11+ and capacitor C11-. Capacitors C11+ and C11- may be connected to switches. In the terminal device 100 shown in FIG1 , since there is only one AC signal path, capacitors C11+ and C11- may be connected to each of switches Q11 through Q1n.

[0076] The capacitor C11+ and the capacitor C11 − can be used to couple the AC signal to the ports P11 to P1n through the switches Q11 to Q1n.

[0077] It is understood that when there are multiple AC signals, the power supply device 100 may include multiple capacitor pairs. The multiple capacitor pairs correspond one-to-one to the multiple AC signals. Each of the multiple capacitor pairs can be connected to one or more switches, as long as each AC signal can be coupled to the corresponding port of the switch through the switch, which is not limited in the embodiments of the present application.

[0078] As shown in FIG. 1 , the power supply device 100 may further include a transceiver A11 . An input end of the transceiver A11 may be connected to the controller C, and an output end of the transceiver A11 may be connected to a capacitor C11+ and a capacitor C11 −.

[0079] The transceiver A11 can be used to transmit the AC signal from the controller C to the capacitor C11+ and the capacitor C11 −, and then couple the AC signal to the port P11 to the port P1n through the capacitor C11+ and the capacitor C11 −.

[0080] It can be imagined that, since the capacitor has the function of passing AC and blocking DC, the capacitor C11+ and the capacitor C11- can also prevent the DC power from the first bus from being transmitted to the transceiver A11.

[0081] In one possible implementation, the power supply device 100 may include multiple capacitor pairs and multiple transceivers, as shown in FIG3 . The multiple capacitor pairs may include capacitor C11+, capacitor C11−, capacitor C12+, capacitor C12−, ..., capacitor C1n+, and capacitor C1n−, totaling 2n capacitors. The multiple transceivers may include transceivers A11, transceivers A12, ..., transceivers A1n, totaling n transceivers. The n transceivers are used to transmit n AC signals.

[0082] Optionally, each transceiver may be connected between the port and the first busbar via a corresponding capacitor and a corresponding switch.

[0083] For example, the transceiver A11 may be connected between the port P11 and the first positive bus bus1+ through a capacitor C11+ and a switch Q11, and may also be connected between the port P11 and the first negative bus bus1- through a capacitor C11- and a switch Q11.

[0084] For another example, the transceiver A12 can be connected between the port P12 and the first positive bus bus1+ through the capacitor C12+ and the switch Q12, and can also be connected between the port P12 and the first negative bus bus1- through the capacitor C12- and the switch Q12.

[0085] For another example, the transceiver A1n can be connected between the port P1n and the first positive bus bus1+ through the capacitor C1n+ and the switch Q1n, and can also be connected between the port P1n and the first negative bus bus1- through the capacitor C1n- and the switch Q1n.

[0086] As can be seen, in the power supply device 100 shown in FIG3 , n transceivers, n capacitor pairs, n switches, and n ports are connected in a one-to-one correspondence. The controller C can couple the AC signal to the port by controlling the switch to close. The controller C can also control the switch to be in a normally closed state and control the activation of the transceiver, thereby also coupling the AC signal to the port.

[0087] In another possible implementation, the power supply device 100 may also include multiple capacitor pairs and multiple transceivers, as shown in FIG4 . Similar to FIG3 , the power supply device 100 shown in FIG4 also includes switches Q11 through Q1n, totaling n switches. Unlike FIG3 , the power supply device 100 in FIG4 includes n-n1 transceivers and n-n1 capacitor pairs, where n1 represents the difference between the number of transceivers in FIG3 and FIG4 . Therefore, some of the n-n1 transceivers (which may be one or more) can provide AC signals to one or more ports.

[0088] For example, in Figure 4 , transceiver A11 can be connected between the first bus and port P11 via capacitor C11+, capacitor C11-, and switch Q11. Then, controller C can couple an AC signal to port P11 by controlling switch Q11 to close. Of course, controller C can also couple an AC signal to port P11 by keeping switch Q11 in a normally closed state and controlling transceiver A11 to activate.

[0089] For another example, in Figure 4 , transceiver A12 can be connected between the first bus and port P12 via capacitor C12+, capacitor C12-, and switch Q12. Transceiver A12 can also be connected between the first bus and port P13 via capacitor C13+, capacitor C13-, and switch Q13. Thus, controller C can not only couple an AC signal to port P12 by controlling the closure of switch Q12, but can also couple an AC signal to port P13 by controlling switch Q13. Of course, controller C can also couple an AC signal to port P12 by controlling switch Q12 to be normally closed and controlling transceiver A12 to be enabled, and couple an AC signal to port P13 by controlling switch Q13 to be normally closed and controlling transceiver A12 to be enabled.

[0090] For another example, transceiver A1(n-n1) can be connected between the first busbar and port P1(n-n1) via capacitor C1(n-n1)+, capacitor C1(n-n1)-, and switch Q1(n-n1). Then, controller C can couple an AC signal to port P1(n-n1) by controlling switch Q1(n-n1) to close. Of course, controller C can also couple an AC signal to port P1(n-n1) by keeping switch Q1(n-n1) in a normally closed state and controlling transceiver A1(n-n1) to activate.

[0091] In one example, the AC signal may be a power line carrier (PLC) signal (which may be referred to as a PLC signal for short). Of course, the AC signal may also be other signals, which is not limited in the embodiments of the present application.

[0092] In another example, any of the acquisition units I11 to I1n (e.g., acquisition unit I11) can be a sensor, a mutual inductor, or a current divider. Of course, the acquisition units I11 to I1n can also be other types, which are not limited in this embodiment of the present application. In this embodiment of the present application, the acquisition units I11 to I1n can all be sensors.

[0093] In another example, any switch among switches Q11 to Q1n may be a relay or a contactor. Of course, switches Q11 to Q1n may also be of other types, which are not limited in the present embodiment. In the present embodiment, switches Q11 to Q1n may all be relays.

[0094] Optionally, the inductance value and type of any inductor L11 to L1n may be selected according to the frequency of the AC signal. The embodiment of the present application does not limit the inductance value and type of the inductor L11 to L1n.

[0095] In some embodiments, each of switches Q11 through Q1n may include a first node, a second node, and a third node. In FIG1 , the first node is a node connected to the capacitor pair and can be used to receive an AC signal. The second node can be used to connect between the first negative bus bus1- and a port. The third node can be used to connect between the first positive bus bus1+ and a port.

[0096] For example, for switch Q11, the first node may be a node connected to capacitor C11+ and capacitor C11-, the second node may be connected between the first negative bus bus1- and port P11, and the third node may be connected between the first positive bus bus1+ and port P11.

[0097] Exemplarily, each acquisition unit may be located between the corresponding port and the first positive bus bar bus1+, or between the corresponding port and the first negative bus bar bus1-.

[0098] For example, the acquisition unit I11 can be located between the port P11 and the first positive bus bus1+, or between the port P11 and the first negative bus bus1-, although this is not limited in this embodiment. In this embodiment, the acquisition units I11 to I1n are all located between the corresponding ports and the first negative bus bus1-, as shown in FIG1 .

[0099] Furthermore, the connection relationship between the port P11 and the port P1n, the inductor L11 and the inductor L1n, the switch Q11 and the switch Q1n, the first positive bus bus1+ and the first negative bus bus1- can satisfy either of the following two conditions:

[0100] Case 1: The port is connected to the first positive bus bus1+ through an inductor, and the third node is connected between the inductor and the port.

[0101] For example, the port P11 may be connected to the first positive bus bus1+ via the inductor L11 , and the third node of the switch Q11 may be connected between the inductor L11 and the port P11 , as shown in FIG5 .

[0102] For another example, the port P12 may be connected to the first positive bus bus1+ via the inductor L12 , and the third node of the switch Q12 may be connected between the inductor L12 and the port P12 , as shown in FIG5 .

[0103] For another example, the port P1n may be connected to the first positive bus bus1+ via the inductor L1n, and the third node of the switch Q1n may be connected between the inductor L1n and the port P1n, as shown in FIG5 .

[0104] 5 , ports P11 to P1n are connected to the first negative bus bus1 − through corresponding acquisition units I11 to I1n, and the second nodes of switches Q11 to Q1n are connected between the first negative bus bus1 − and ports P11 to P1n.

[0105] Case 2: the port is connected to the first negative bus bus1- through the inductor, and the second node is connected between the inductor and the port.

[0106] For example, the port P11 may be connected to the first negative bus bus1- via the inductor L11, and the second node of the switch Q11 may be connected between the inductor L11 and the port P11, as shown in FIG1, FIG3 and FIG4.

[0107] For another example, the port P12 may be connected to the first negative bus bus1- through the inductor L11, and the second node of the switch Q12 may be connected between the inductor L12 and the port P12, as shown in FIG1, FIG3 and FIG4.

[0108] For another example, the port P1n may be connected to the first negative bus bus1- via the inductor L1n, and the second node of the switch Q1n may be connected between the inductor L1n and the port P1n, as shown in FIG1 , FIG3 and FIG4 .

[0109] In Figures 1, 3, and 4, ports P11 to P1n are connected to the first negative bus bus1- through corresponding acquisition units I11 to I1n. The third nodes of switches Q11 to Q1n are connected between the first positive bus bus1+ and ports P11 to P1n.

[0110] As can be seen from Figures 1 to 5, the inductor can be located in the branch between the port and the first positive bus bus1+, or in the branch between the port and the first negative bus bus1-. Similarly, the acquisition unit can be located in the branch between the port and the first positive bus bus1+, or in the line between the port and the first negative bus bus1-, and this embodiment of the application does not limit this.

[0111] In some embodiments, any of the terminal devices T11 to T1n may be a remote radio unit (RRU) or a baseband unit (BBU). In other words, the power supply device 100 provided in the embodiments of the present application may power an RRU or a BBU. Of course, the terminal device 100 may also be another device powered by a cable, such as a router, and this is not limited in the embodiments of the present application.

[0112] The present application also provides a base station 10, as shown in FIG6 . Base station 10 may include multiple terminal devices and multiple power supply devices. The multiple terminal devices may include terminal devices T11 through T1n and terminal devices T21 through T2n, etc. The multiple power supply devices may include power supply device 100a and power supply device 100b, etc.

[0113] Among them, the power supply device 100a and the power supply device 100b can be connected to the second bus. The second bus includes the second positive bus bus2+ and the second negative bus bus2- in Figure 6. In other words, the power supply device 100a and the power supply device 100b can be connected to the same bus. Of course, in addition to being connected to the same bus, the power supply device 100a and the power supply device 100b can also share a ground terminal. The embodiment of the present application is described by taking connection to the same bus as an example.

[0114] Exemplarily, the power supply device 100 a may be connected to the terminal devices T11 to T1 n, and is configured to obtain direct current from the second bus and provide the direct current to each of the terminal devices T11 to T1 n.

[0115] Similarly, the power supply device 100 b may be connected to the terminal devices T21 to T2 n to obtain direct current power from the second bus and provide the power to each of the terminal devices T21 to T2 n.

[0116] Of course, the number of terminal devices powered by power supply device 100a may be different from the number of terminal devices powered by power supply device 100b. This embodiment of the application is described as an example in which the number of terminal devices powered by power supply device 100a may be the same as the number of terminal devices powered by power supply device 100b.

[0117] It is conceivable that when the base station 10 includes multiple power supply devices and each power supply device supplies power to multiple terminal devices, the controller C of the power supply device can select the first port whose amplitude of the AC signal output by the first port is greater than a preset amplitude threshold as an alternative matching port after obtaining the amplitude of the AC signal output by the first port, and then select the port into which the AC signal corresponding to the largest amplitude is injected from the alternative matching ports as the port that matches the terminal device. In this way, by narrowing the selection range of the first port, ports that may be alternative matching ports in other terminal devices can be excluded, so as to improve the matching efficiency between the port and the terminal device, thereby improving the working efficiency and reliability of the base station.

[0118] For the base station 10 shown in FIG6 , the corresponding relationship between the injection of the AC signal and the power supply device 100 a and the power supply device 100 b is shown in Table 1:

[0119] Table 1

[0120] In Table 1, power supply device 100a serves as the primary power supply for terminal devices T11 through T1n, and power supply device 100b serves as the crosstalk device for power supply device 100a. A111 through A11n represent the amplitudes of the AC signal at terminal device T11 (i.e., the amplitudes of the AC signal output from port P11 of terminal device 100a) when switches Q11 through Q1n of terminal device 100a are sequentially turned on. A121 through A12n represent the amplitudes of the AC signal at terminal device T12 (i.e., the amplitudes of the AC signal output from port P12 of terminal device 100a) when switches Q11 through Q1n are sequentially turned on. A1n1 through A1nn represent the amplitudes of the AC signal at terminal device T1n (i.e., the amplitudes of the AC signal output from port P1n of terminal device 100a) when switches Q11 through Q1n are sequentially turned on.

[0121] Similarly, A211 to A21n represent the amplitude of the AC signal at terminal device T21 (i.e., the amplitude of the AC signal output from port P21 of terminal device 100b) when switches Q11 to Q1n of terminal device 100a are sequentially turned on. A121 to A12n represent the amplitude of the AC signal at terminal device T22 (i.e., the amplitude of the AC signal output from port P22 of terminal device 100b) when switches Q11 to Q1n of terminal device 100a are sequentially turned on. A2n1 to A2nn represent the amplitude of the AC signal at terminal device T2n (i.e., the amplitude of the AC signal output from port P2n of terminal device 100b) when switches Q11 to Q1n of terminal device 100a are sequentially turned on.

[0122] As can be seen from Table 1, by controlling the closing of the switch, the AC signal can be injected into the corresponding port, and by comparing the amplitudes of the AC signals of different terminal devices, all ports can be matched with the corresponding terminal devices.

[0123] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A power supply device for supplying power to a plurality of terminal devices, characterized in that: It includes a first busbar, a plurality of inductors, a plurality of acquisition units, a plurality of switches, a plurality of ports and a controller; the plurality of inductors, the plurality of acquisition units, the plurality of switches and the plurality of ports correspond to each other one by one; Each of the plurality of ports is connected to the first bus through the acquisition unit and the inductor, and each of the plurality of switches is connected between the first bus and the port; Each of the plurality of collection units is used to: collect the output current of the port and transmit it to the controller; The controller is used to: select a first port in a power supply state for the terminal device from the multiple ports according to the output currents of the multiple ports, transmit an AC signal to the terminal device by controlling switches corresponding to the first port to be closed in sequence, and select a port matching the terminal device according to the acquired amplitude of the AC signal of the terminal device and the address information; Each of the plurality of inductors is used to suppress the AC signal transmitted by the switch from being transmitted to the first bus.

2. The power supply device according to claim 1, characterized in that: The controller is used to: Selecting a port whose output current is greater than a preset current threshold value from a plurality of ports as the first port; Control switches corresponding to the first port to be closed in sequence, transmit the AC signal to each terminal device through the first port through the switches corresponding to the first port, and obtain the amplitude of the AC signal and the address information of each terminal device; According to the address information, a port into which the AC signal corresponding to the maximum amplitude of the AC signal is injected is selected from the plurality of first ports as a port matching the terminal device.

3. The power supply device according to claim 1 or 2, characterized in that: The power supply device further comprises at least one capacitor pair, wherein the capacitor pair is connected to the switch; The capacitor pair is used to couple the AC signal to a port corresponding to the switch through the switch.

4. The power supply device according to claim 3, characterized in that: The power supply device further comprises at least one transceiver, wherein the transceiver is connected to the controller and is also connected to the capacitor pair; The transceiver is used to transmit the AC signal to the capacitor pair.

5. The power supply device according to any one of claims 1 to 4, characterized in that: The first busbar includes a first positive busbar and a first negative busbar; The switch includes a first node, a second node and a third node; wherein the first node is used to receive the AC signal, the second node is used to connect between the first negative bus and the port, and the third node is used to connect between the first positive bus and the port.

6. The power supply device according to claim 5, characterized in that: The connection relationship between the port, the inductor, the switch, the first positive bus and the first negative bus satisfies: The port is connected to the first positive bus through the inductor, and the third node is connected between the inductor and the port; or, the port is connected to the first negative bus through the inductor, and the second node is connected between the inductor and the port.

7. The power supply device according to any one of claims 1 to 6, characterized in that: The AC signal is a power line carrier signal.

8. The power supply device according to any one of claims 1 to 7, characterized in that: Any of the multiple acquisition units is a sensor, a mutual inductor or a shunt.

9. The power supply device according to any one of claims 1 to 8, characterized in that: Any switch among the plurality of switches is a relay or a contactor.

10. The power supply device according to any one of claims 1 to 9, characterized in that: The terminal device is a radio remote unit or a baseband processing unit.

11. A base station, characterized in that: The invention comprises a plurality of terminal devices and a power supply device as claimed in any one of claims 1 to 10, wherein the power supply device is connected to each of the plurality of terminal devices.

12. The base station according to claim 11, characterized in that The base station includes a plurality of power supply devices; Each of the plurality of power supply devices is connected to the second bus, or each of the plurality of power supply devices shares a ground terminal.

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