Power supply device and base station

Abstract

According to the power supply equipment and the base station provided by the invention, the port matched with the terminal equipment can be selected, namely, the matching relationship between the port and the terminal equipment can be determined, so that the workload is reduced, and unnecessary loss caused by mistaken turn-off of the terminal equipment is avoided. The power supply device may include a first bus, a plurality of inductors, a plurality of acquisition units, a plurality of switches, a plurality of ports, and a controller. And the plurality of inductors, the plurality of acquisition units, the plurality of switches and the plurality of ports are in one-to-one correspondence. Each of the plurality of ports may be connected with the first bus through an acquisition unit and an inductor. Each of the plurality of switches may be connected between the first bus and the port. Each acquisition unit can be used for acquiring the output current of the port and transmitting the output current to the controller. The controller can be used for selecting a first port in a state of supplying power to the terminal equipment from the plurality of ports according to the respective output current of the plurality of ports, and transmitting an alternating current signal to the terminal equipment by controlling the switches corresponding to the first port to be closed in sequence; and selecting a port matched with the terminal equipment according to the obtained amplitude and address information of the alternating current signal of the terminal equipment.

Description

Technical Field

[0001] The present application relates to the technical field of power supply, and more specifically, to a power supply device and a base station. Background Art

[0002] 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 frequency 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 the base station, related technologies often install circuit breakers such as air switches on the power supply cable between the power supply device and the terminal device to shut down some terminal devices to achieve energy saving of the base station. However, due to the large number of terminal devices and the long power supply cable (even up to 150 meters), it is difficult to obtain the model of the terminal device, and it is impossible to determine the matching relationship between the port of the power supply device and the terminal device. On the one hand, it is necessary to manually count the matching relationship between the port and the terminal device, which is labor-intensive and the statistical process is complicated. On the other hand, in the process of shutting down some terminal devices, it is easy to cause unnecessary losses due to the wrong shutdown of the terminal device.

[0003] Therefore, there is an urgent need for a technical solution that can determine the matching relationship between the port and the terminal device to reduce the workload and avoid the terminal device from being shut down by mistake. Summary of the invention

[0004] The present application provides a power supply device and a base station, which 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.

[0005] In a first aspect, the present application provides a power supply device that can be used to supply power to multiple terminal devices. The power supply device may include a first bus, multiple inductors, multiple acquisition units, multiple switches, multiple ports, and a controller.

[0006] The multiple inductors, the multiple acquisition units, the multiple switches and the multiple ports correspond to each other one by one. That is to say, the number of the inductors, the acquisition units, the switches, the ports and the controllers can be equal.

[0007] Optionally, each of the plurality of ports may be connected to the first busbar via a collection unit and an inductor. That is, the collection 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.

[0008] Furthermore, each of the multiple acquisition units can be used to: acquire the output current of the port and transmit it to the controller.

[0009] The controller can be used to: select a first port in a state of powering a terminal device from a plurality of ports according to the output currents of the plurality of ports respectively. That is, the first port can be used to indicate a port in a state of powering a terminal device among the plurality of ports. It is conceivable that the power supply device may include a plurality of ports, each of which can power a terminal device. However, in a scenario where the port is not connected to a terminal device, the port may be in an idle state. The controller can also be used 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 matching the terminal device according to the amplitude and address information of the AC signal of the terminal device obtained.

[0010] 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 can be imagined that since different power supply devices can be connected to the same bus, or different power supply devices share a ground terminal, the inductor can prevent the AC signal from being transmitted to other power supply devices through the bus or the ground terminal, thereby avoiding the generation of crosstalk signals to other power supply devices.

[0011] 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 in the process of power supply, it 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.

[0012] In a possible implementation, the controller may be specifically configured to: select a port with an output current greater than a preset current threshold value from multiple ports as the first port. It is understandable that a port with an output current less than or equal to the preset current threshold value may be in an idle state without powering the terminal device.

[0013] The controller can also be used to: control the switches corresponding to the first port to be closed in sequence, transmit the AC signal to the terminal device through the first port through the switch corresponding to the first port, and obtain the amplitude and address information of the AC signal of each terminal device. In other words, when the switch corresponding to the first port is closed, the switch can couple the AC signal to the first port, and then each terminal device can have the amplitude of the AC signal.

[0014] The controller may also be used 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 a plurality of AC signals is injected as a port matching the terminal device.

[0015] In another possible implementation manner, the power supply device further includes at least one capacitor pair, and the capacitor pair may be connected to the switch.

[0016] The capacitor pair can be used to couple an AC signal to the corresponding port of the switch through the switch.

[0017] Furthermore, the power supply device may further include at least one transceiver, and the transceiver may be connected to the controller and may also be connected to the capacitor pair.

[0018] 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.

[0019] 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 coupling to the transceiver.

[0020] In one example, the AC signal may be a power line carrier (PLC) signal (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 present application.

[0021] In another example, any of the multiple acquisition units may be a sensor, a mutual inductor, or a shunt. Of course, the acquisition unit may also be of other types, which is not limited in this application.

[0022] Optionally, the inductance value and type of any inductor among the multiple inductors can be selected according to the frequency of the AC signal.

[0023] Exemplarily, any switch among the plurality of switches may be a relay or a contactor. Of course, the switch may also be of other types, which is not limited in the present application.

[0024] In a possible implementation, the first bus may include a first positive bus and a first negative bus. The switch may include a first node, a second node, and a third node. The first node may be used to receive an AC signal. The second node may be used to connect between the first negative bus and the port. The third node may be used to connect between the first positive bus and the port.

[0025] Further, the connection relationship between the port, the inductor, the switch, the first positive busbar, and the first negative busbar may satisfy: the port is connected to the first positive busbar through the inductor, and the third node is connected between the inductor and the port; or, the port is connected to the first negative busbar through the inductor, and the second node is connected between the inductor and the port. In other words, the connection relationship between the port, the inductor, the switch, the first positive busbar, and the first negative busbar may satisfy either of the above two examples.

[0026] Exemplarily, the terminal device may be a radio remote unit or a baseband processing unit. That is, the power supply device provided in the present application may supply power to the radio remote unit or the baseband processing unit. Of course, the terminal device may also be other devices, which are not limited in the present application.

[0027] 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 possible implementations thereof. The power supply device may be connected to each of the multiple terminal devices to supply power to each terminal device.

[0028] Each power supply device is used for obtaining direct current from the second bus and providing the direct current to each power supply device in the plurality of power supply devices.

[0029] Exemplarily, the base station may include a plurality of power supply devices. Each of the plurality of 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 ground terminal.

[0030] It is conceivable that, in the case where 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, after obtaining the amplitude of the AC signal output by the first port, 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, 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.

[0031] It should be understood that the second aspect of the present application is consistent with the technical solution of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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.

[0033] Figure 1 is a schematic structural diagram of a power supply device 100 in an embodiment of the present application;

[0034] Figure 2 This is a flow chart of the controller implementing matching of terminal devices and ports in an embodiment of the present application;

[0035] Figure 3 is another schematic structural diagram of the power supply device 100 in the embodiment of the present application;

[0036] Figure 4is another schematic structural diagram of the power supply device 100 in the embodiment of the present application;

[0037] Figure 5 is another schematic structural diagram of the power supply device 100 in the embodiment of the present application;

[0038] Figure 6 1 is a schematic structural diagram of a base station 10 in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0040] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The terms "first", "second", etc. in the specification embodiments, claims, and drawings of the present application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units. The method, system, product, or device is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0042] It should be understood that in the present 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 objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single 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.

[0043] 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 frequency 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 the base station, related technologies often install circuit breakers such as air switches on the power supply cable between the power supply device and the terminal device to shut down some terminal devices to achieve energy saving of the base station. However, due to the large number of terminal devices and the long power supply cable (even up to 150 meters), it is difficult to obtain the model of the terminal device, and it is impossible to determine the matching relationship between the port of the power supply device and the terminal device. On the one hand, it is necessary to manually count the matching relationship between the port and the terminal device, which is labor-intensive and the statistical process is complicated. On the other hand, in the process of shutting down some terminal devices, it is easy to cause unnecessary losses due to the wrong shutdown of the terminal device.

[0044] In order to overcome the above shortcomings, the present application embodiment provides a power supply device that can be used to supply power to multiple terminal devices T. Figure 1 As shown, the power supply device 100 may include a first bus, multiple inductors, multiple acquisition units, multiple switches, multiple ports and a controller C. The controller C may be connected to multiple switch units and multiple acquisition units to control the opening and closing of the switch units and realize communication with the acquisition units.

[0045] The multiple inductors, the multiple acquisition units, the multiple switches and the multiple ports correspond to each other one by one. That is to say, the number of the inductors, the acquisition units, the switches, the ports and the controller C can be equal.

[0046] Among them, the first bus includes a first positive bus bus1+ and a first negative bus bus1-. Multiple inductors may include inductor L11, inductor L12, ..., inductor L1n, totaling n inductors. Multiple acquisition units may include acquisition unit I11, acquisition unit I12, ..., acquisition unit I1n, totaling n acquisition units. Multiple switches may include switch Q11, switch Q12, ..., switch Q1n, totaling n switches. Multiple ports may include port P11, port P12, ..., port P1n, totaling n ports. Multiple terminal devices may include terminal device T11, terminal device T12, ..., terminal device T1n, totaling n terminal devices. It can be understood that each port can power a terminal device, and the number of terminal devices may be less than the number of ports. The present application Figure 1 The provided embodiment is described by taking the example that the number of terminal devices is equal to the number of ports.

[0047] Optionally, each of the n ports may be connected to the first bus (which may be the first positive bus bus1+ or the first negative bus bus1-) through a corresponding acquisition unit and a corresponding inductor. That is, the acquisition unit and the inductor may be located between the port and the first bus (which may be the first positive bus bus1+ or the first negative bus bus1-). Each switch may be connected between the first bus (which may be the first positive bus bus1+ or the first negative bus bus1-) and the port.

[0048] Furthermore, each acquisition unit (eg, acquisition unit I11 ) may be used to: acquire the output current of a port (eg, port P11 ) and transmit the current to the controller C.

[0049] The controller C may be used to select a first port in a state of supplying power to a terminal device (eg, the terminal device T11 and the terminal device T12 , etc.) from the ports P11 to P1n according to the respective output currents of the ports P11 to P1n.

[0050] That is, the first port can be used to indicate the port among the ports P11 to P1n that is in the state of supplying power to the terminal device. It is conceivable that in the scenario where the port is not connected to the terminal device, the port can be in an idle state, that is, the port is not the first port.

[0051] The controller C can also be used to: transmit an alternating current (AC) signal (which can be referred to as an AC signal) to the terminal devices T11 to T1n by controlling the switches corresponding to the first port to close in sequence, and select a port matching the terminal device according to the amplitude of the AC signal of the terminal device and the address information of the terminal device.

[0052] Each inductor (eg, inductor L11 ) can be used to suppress an AC signal transmitted by a switch (eg, switch Q11 ) from being transmitted to the first bus (ie, the first positive bus bus1+ or the first negative bus bus1 −).

[0053] It is conceivable that, since different power supply devices can be connected to the same bus, or different power supply devices share a ground terminal, that is, multiple power supply devices supply power to multiple terminal devices, then the inductor (such as inductor L11) can prevent the AC signal from being transmitted to other power supply devices through the bus (i.e., the first positive bus bus1+ and the first negative bus bus1-) or the ground terminal, thereby avoiding the generation of crosstalk signals to other power supply devices. Therefore, inductors L11 to L1n can be called decoupling inductors.

[0054] The power supply device 100 provided in the embodiment of the present application can not only realize the power supply of multiple terminal devices through multiple inductors, multiple acquisition units, multiple switches, multiple ports and a controller C, but also can select a port matching the terminal device from multiple ports during the power supply process. 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 wrong shutdown of the terminal device.

[0055] In some embodiments, the controller C can be specifically used to select a port with an output current greater than a preset current threshold value from the ports P11 to P1n as the first port. It can be understood that the port with an output current less than or equal to the preset current threshold value can be in an idle state without powering any terminal device.

[0056] For example, if the output current of the port P11 is greater than a preset current threshold value, the port P11 may be the first port.

[0057] Indicatively, the first port may be one or more. The following describes the situation in detail:

[0058] 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.

[0059] Case 2: When there are multiple first ports, the controller C can be used to control the switches corresponding to each first port to be closed in sequence, and the AC signal is transmitted to each terminal device through the first port through the switch corresponding to the first port, and the amplitude and address information of the AC signal of each terminal device are obtained. That is, when the switch corresponding to the first port is closed, the switch can couple the AC signal to the first port.

[0060] It can be understood that, since the port P11 to the port P1n are all connected to the first bus, when a switch is closed, the amplitude of the AC signal will exist in the terminal equipment 11 to the terminal equipment T1n.

[0061] 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, couple the AC signal to port P11 through the switch Q11, and obtain the amplitude and address information of the AC signals of the terminal devices T11 and T12.

[0062] The controller C may 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.

[0063] Furthermore, the controller C can also be used to: select, from the plurality of first ports, a port into which an AC signal corresponding to the maximum amplitude of a plurality of AC signals is injected as a port matching the terminal device according to the address information of each 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.

[0064] Specifically, refer to Figure 2 Controller C can achieve matching between terminal equipment and port by controlling the switch to close through the following steps:

[0065] Step S101: the power supply device 100 requests to match with the terminal device.

[0066] Step S102: Set the initial value of port P1i to 1; wherein i=1, 2, ..., n.

[0067] Step S103: execute i=i+1.

[0068] 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.

[0069] Step S105 : the controller C controls the switch Q1i to close and transmit the AC signal to each port.

[0070] Step S106: Acquire the amplitude and address information of the AC signal of each terminal device.

[0071] Step S107: Determine whether i>n is satisfied. If so, execute step S108; otherwise, return to step S103.

[0072] Step S108: According to the address information, a port into which an AC signal corresponding to a maximum amplitude of a plurality of AC signals is injected is selected as a port matching the terminal device.

[0073] In other embodiments, reference Figure 1 , the power supply device 100 may further include a capacitor pair. The capacitor pair includes a capacitor C11+ and a capacitor C11-. The capacitor C11+ and the capacitor C11- may be connected to the switch. Figure 1 In the terminal device 100 shown, since there is only one AC signal path, the capacitor C11+ and the capacitor C11- can be connected to each switch among the switches Q11 to Q1n.

[0074] The capacitor C11+ and the capacitor C11 − may be used to couple the AC signal to the ports P11 to P1n through the switches Q11 to Q1n.

[0075] It is understandable that, in the case where 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 capacitor pair in the multiple capacitor pairs may be connected to one or more switches, as long as each AC signal can be coupled to the port corresponding to the switch through the switch, and the embodiment of the present application is not limited thereto.

[0076] like Figure 1 As shown, 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 the capacitor C11+ and the capacitor C11 −.

[0077] 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 −.

[0078] 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.

[0079] In a possible implementation, the power supply device 100 may include multiple capacitor pairs and multiple transceivers, such as Figure 3 As shown. The plurality of capacitor pairs may include capacitor C11+, capacitor C11-, capacitor C12+, capacitor C12-, ..., capacitor C1n+ and capacitor C1n-, a total of 2n capacitors. The plurality of transceivers include transceiver A11, transceiver A12, ..., transceiver A1n, a total of n transceivers. The n transceivers are used to transmit n AC signals.

[0080] Optionally, each transceiver may be connected between the port and the first bus through a corresponding capacitor and a corresponding switch.

[0081] 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.

[0082] 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.

[0083] For another example, the transceiver A1n may be connected between the port P1n and the first positive bus bus1+ through a capacitor C1n+ and a switch Q1n, and may also be connected between the port P1n and the first negative bus bus1- through a capacitor C1n- and a switch Q1n.

[0084] It can be seen that in Figure 3 In the power supply device 100 shown, n transceivers, n capacitor pairs, n switches and n ports are connected in a one-to-one correspondence. The controller C can achieve the coupling of AC signals to the ports by controlling the closing of the switches. The controller C can also control the switches to be in a normally closed state and control the start-up of the transceivers, and can also achieve the coupling of AC signals to the ports.

[0085] In another possible implementation, the power supply device 100 may also include multiple capacitor pairs and multiple transceivers, such as Figure 4 As shown. Figure 3 same, Figure 4 The power supply device 100 shown also includes switches Q11 to Q1n, a total of n switches. Figure 3 The difference is that Figure 4 The power supply device 100 includes n-n1 transceivers and n-n1 capacitor pairs, where n1 represents Figure 3 Transceiver and Figure 4 Then, some of the n-n1 transceivers (may be one or more) can provide AC signals for one or more ports.

[0086] For example, Figure 4 In the embodiment, the transceiver A11 can be connected between the first bus and the port P11 through the capacitor C11+, the capacitor C11- and the switch Q11. Then, the controller C can realize the coupling of the AC signal to the port P11 by controlling the closing of the switch Q11. Of course, the controller C can also realize the coupling of the AC signal to the port P11 by controlling the start-up of the transceiver A11 and the switch Q11 being in a normally closed state.

[0087] For example, Figure 4In the embodiment, the transceiver A12 can be connected between the first bus and the port P12 through the capacitor C12+, the capacitor C12- and the switch Q12, and the transceiver A12 can also be connected between the first bus and the port P13 through the capacitor C13+, the capacitor C13- and the switch Q13. Then, the controller C can not only realize the coupling of the AC signal to the port P12 by controlling the closing of the switch Q12, but also realize the coupling of the AC signal to the port P13 by controlling the switch Q13. Of course, the controller C can also realize the coupling of the AC signal to the port P12 by controlling the switch Q12 to be in a normally closed state and controlling the start of the transceiver A12, and realize the coupling of the AC signal to the port P13 by controlling the switch Q13 to be in a normally closed state and controlling the start of the transceiver A12.

[0088] For another example, the transceiver A1(n-n1) can be connected between the first bus and the port P1(n-n1) through the capacitor C1(n-n1)+, the capacitor C1(n-n1)- and the switch Q1(n-n1). Then, the controller C can achieve the coupling of the AC signal to the port P1(n-n1) by controlling the closing of the switch Q1(n-n1). Of course, the controller C can also achieve the coupling of the AC signal to the port P1(n-n1) by controlling the start-up of the transceiver A1(n-n1) and the switch Q1(n-n1) to be in a normally closed state.

[0089] 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 are not limited in the embodiments of the present application.

[0090] In another example, any one of the acquisition units I11 to I1n (e.g., the acquisition unit I11) may be a sensor, a mutual inductor, or a shunt. Of course, the acquisition units I11 to I1n may also be other types, which are not limited in the embodiment of the present application. In the embodiment of the present application, the acquisition units I11 to I1n may all be sensors.

[0091] 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 embodiment of the present application. In the embodiment of the present application, switches Q11 to Q1n may all be relays.

[0092] Optionally, the inductance value and type of any inductor among the inductors 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 inductors L11 to L1n.

[0093] In some embodiments, each of the switches Q11 to Q1n may include a first node, a second node, and a third node. Figure 1 In the embodiment, 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 bar bus1- and the port. The third node can be used to connect between the first positive bus bar bus1+ and the port.

[0094] 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.

[0095] Exemplarily, each acquisition unit may be located between a corresponding port and the first positive bus bar bus1+, or between a corresponding port and the first negative bus bar bus1-.

[0096] For example, the acquisition unit I11 may be located between the port P11 and the first positive bus bus1+, and the acquisition unit I11 may also be located between the port P11 and the first negative bus bus1-, which is not limited in the embodiment of the present application. In the embodiment of the present application, the acquisition units I11 to I1n are all located between the corresponding ports and the first negative bus bus1-, such as Figure 1 shown.

[0097] Further, 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 any one of the following two situations:

[0098] 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.

[0099] For example, the port P11 may be connected to the first positive bus bus1+ through the inductor L11, and the third node of the switch Q11 may be connected between the inductor L11 and the port P11. Figure 5 shown.

[0100] For another example, the port P12 may be connected to the first positive bus bus1+ through the inductor L12, and the third node of the switch Q12 may be connected between the inductor L12 and the port P12. Figure 5 shown.

[0101] 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 FIG. Figure 5shown.

[0102] Figure 5 In the embodiment, ports P11 to P1n are connected to the first negative bus bus1- through corresponding acquisition units I11 to I1n, respectively. The second nodes of switches Q11 to Q1n are connected between the first negative bus bus1- and ports P11 to P1n.

[0103] Case 2: the port is connected to the first negative bus bus1- through an inductor, and the second node is connected between the inductor and the port.

[0104] For example, the port P11 may be connected to the first negative bus bus1- through the inductor L11, and the second node of the switch Q11 may be connected between the inductor L11 and the port P11. Figure 1 , Figure 3 and Figure 4 shown.

[0105] 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. Figure 1 , Figure 3 and Figure 4 shown.

[0106] 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 FIG. Figure 1 , Figure 3 and Figure 4 shown.

[0107] Figure 1 , Figure 3 and Figure 4 In the embodiment, 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.

[0108] from Figures 1 to 5 It can be seen that the inductor can be located on the branch between the port and the first positive bus bus1+, or on the branch between the port and the first negative bus bus1-. Similarly, the acquisition unit can be located on the branch between the port and the first positive bus bus1+, or on the line between the port and the first negative bus bus1-, which is not limited in the embodiment of the present application.

[0109] In some embodiments, any terminal device among the terminal devices T11 to T1n may be a remote radio unit (RRU) or a base band unit (BBU). That is, the power supply device 100 provided in the embodiment of the present application may supply power to the RRU or the BBU. Of course, the terminal device 100 may also be other devices powered by cables, such as routers, which is not limited in the embodiment of the present application.

[0110] The present application embodiment also provides a base station 10, such as Figure 6 As shown. The base station 10 may include multiple terminal devices and multiple power supply devices. The multiple terminal devices may include terminal devices T11 to T1n and terminal devices T21 to T2n, etc. The multiple power supply devices may include power supply device 100a and power supply device 100b, etc.

[0111] The power supply device 100a and the power supply device 100b can be connected to the second bus. The second bus includes Figure 6 The second positive bus bar bus2+ and the second negative bus bar bus2- in the power supply device 100a and the power supply device 100b can be connected to the same bus bar. Of course, in addition to being connected to the same bus bar, 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 bar as an example.

[0112] Exemplarily, the power supply device 100 a may be connected to the terminal devices T11 to T1 n, and is used to obtain direct current power from the second bus and provide the direct current power to each of the terminal devices T11 to T1 n.

[0113] Similarly, the power supply device 100b may be connected to the terminal devices T21 to T2n, and is used to obtain direct current from the second bus and provide the direct current to each of the terminal devices T21 to T2n.

[0114] 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 takes the example that 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.

[0115] It can be imagined 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 the 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 maximum amplitude is injected from the alternative matching ports as the port matching 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.

[0116] for Figure 6 In the base station 10 shown, the corresponding relationship between the injection of AC signals and the power supply device 100a and the power supply device 100b is shown in Table 1:

[0117] Table 1

[0118]

[0119] In Table 1, the power supply device 100a is used as the main power supply device for supplying power to the terminal devices T11 to T1n, and the power supply device 100b is used as the crosstalk device of the power supply device 100a. Among them, A111 to A11n represent the amplitude of the AC signal of the terminal device T11 when the switches Q11 to Q1n in the terminal device 100a are turned on in sequence (i.e., the amplitude of the AC signal output by the port P11 in the terminal device 100a). A121 to A12n represent the amplitude of the AC signal of the terminal device T12 when the switches Q11 to Q1n are turned on in sequence (i.e., the amplitude of the AC signal output by the port P12 in the terminal device 100a). A1n1 to A1nn represent the amplitude of the AC signal of the terminal device T1n when the switches Q11 to Q1n are turned on in sequence (i.e., the amplitude of the AC signal output by the port P1n in the terminal device 100a).

[0120] Similarly, A211 to A21n represent the amplitude of the AC signal of the terminal device T21 when the switches Q11 to Q1n in the terminal device 100a are turned on in sequence (i.e., the amplitude of the AC signal output by the port P21 in the terminal device 100b). A121 to A12n represent the amplitude of the AC signal of the terminal device T22 when the switches Q11 to Q1n in the terminal device 100a are turned on in sequence (i.e., the amplitude of the AC signal output by the port P22 in the terminal device 100b). A2n1 to A2nn represent the amplitude of the AC signal of the terminal device T2n when the switches Q11 to Q1n in the terminal device 100a are turned on in sequence (i.e., the amplitude of the AC signal output by the port P2n in the terminal device 100b).

[0121] It can be seen from Table 1 that 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.

[0122] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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 state of powering the terminal device from the multiple ports according to the output currents of the multiple ports respectively, transmit an AC signal to the terminal device by controlling switches corresponding to the first port to close 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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