Power distribution device, voltage regulating method, power supply system, computer program product, and medium

Abstract

The present application relates to the technical field of power supply, and discloses a power distribution device, a voltage regulating method, a power supply system, a computer program product, and a medium. The power distribution device comprises a power conversion apparatus, the power conversion apparatus being capable of increasing a voltage at an output end of the power conversion apparatus in response to an increase in load power consumption of an electrical device, and reducing a voltage at an output end of the power conversion apparatus in response to a decrease in the load power consumption of the electrical device. Therefore, by means of controlling the voltage at the output end of the power conversion apparatus to be promptly dynamically adjusted following the load power consumption, the risk of power failure of the electrical device and damage to a functional unit in the electrical device can be reduced, and the demand for a stable voltage at an input end of the electrical device in different working scenarios can be met, and the power distribution efficiency can be improved.

Description

Power distribution equipment, voltage regulation methods, power supply systems, computer program products and media

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411644290.3, filed on November 18, 2024, with the title “Power Distribution Equipment, Voltage Regulation Method, Power Supply System, Computer Program Product and Medium”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of power supply technology, and in particular to power distribution equipment, voltage regulation methods, power supply systems, computer program products and media. Background Technology

[0004] In communication systems, power distribution equipment is typically connected to base stations via cables to supply power. In practice, the power consumption of a base station usually fluctuates dynamically between high and low levels. Currently, traditional power distribution equipment typically maintains a constant output voltage. When the base station's power consumption is high, the cable voltage drop and losses are significant, causing the voltage at the base station's input to drop, easily exceeding the lower withstand voltage limit and leading to a power outage. Conversely, when the base station's power consumption is low, the cable voltage drop and losses are small, causing the voltage at the base station's input to rise, easily exceeding the upper withstand voltage limit and damaging functional units within the base station, such as radio remote units (RRUs), remote radio heads (RRHs), or active antenna units (AAUs). Therefore, traditional power distribution equipment has relatively low power distribution efficiency. Summary of the Invention

[0005] This application provides a power distribution device, a voltage regulation method, a power supply system, a computer program product, and a medium to improve the problems of base station power outages and functional unit damage, and to improve power distribution efficiency.

[0006] Firstly, this application provides a power distribution device, which includes a power conversion device and a feedback control device. The input terminal of the power conversion device is connected to a power source, and the output terminal of the power conversion device is connected to the input terminal of an electrical device. Furthermore, a first terminal of the feedback control device is connected to the output terminal of the power conversion device, and a second terminal of the feedback control device is connected to the control terminal of the power conversion device. The feedback control device is used to detect the current at the output terminal of the power conversion device and control the voltage at the output terminal of the power conversion device to adjust to a first target voltage or a second target voltage. Specifically, when the current increases, the voltage at the output terminal of the power conversion device increases to the first target voltage; when the current decreases, the voltage at the output terminal of the power conversion device decreases to the second target voltage. Therefore, by dynamically adjusting the voltage at the output terminal of the power conversion device based on the detected current, the risk of power outages and damage to the electrical device can be reduced, the voltage stability requirements of the electrical device in different operating scenarios can be met, and power distribution efficiency can be improved.

[0007] One possible implementation is that the first target voltage is the sum of a first set voltage and a first port voltage drop. The first port voltage drop indicates the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical device when the current at the output terminal of the power conversion device increases. The first set voltage is located between the upper and lower withstand voltage limits of the electrical device's input terminal. Based on this, after offsetting the cable voltage drop, the first target voltage at the output terminal of the power conversion device can approximately raise the voltage input to the electrical device's input terminal to the first set voltage, ensuring that the voltage at the electrical device's input terminal remains between its upper and lower withstand voltage limits, thus reducing the risk of power failure in the electrical device.

[0008] One possible implementation is that the first set voltage is the average value of the voltage at the input terminal of the electrical device.

[0009] One possible implementation is that the first set voltage is the average of the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

[0010] One possible implementation is that the second target voltage is the sum of a second set voltage and a second port voltage drop. The second port voltage drop indicates the voltage drop between the output of the power converter and the input of the electrical device when the current at the output of the power converter decreases. The second set voltage is located between the upper and lower withstand voltage limits of the electrical device's input. Based on this, by using the second target voltage at the output of the power converter to offset the cable voltage drop, the voltage input to the electrical device's input can be approximately lowered to the second set voltage, ensuring that the voltage at the electrical device's input remains between its upper and lower withstand voltage limits, thus reducing the risk of damage to the electrical device.

[0011] One possible implementation is that the second set voltage is the average value of the voltage at the input terminal of the electrical device.

[0012] One possible implementation is that the second set voltage is the average of the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

[0013] One possible implementation is to set the second voltage to be the same as the first voltage. This allows the voltage at the output of the power conversion device to be dynamically adjusted, stabilizing the voltage at the input of the electrical equipment to approximately the same value, further ensuring the stability of the voltage at the equipment's input. Furthermore, this also reduces the complexity of control.

[0014] In one possible implementation, the feedback control device is also used to detect the voltage at the output terminal of the power conversion device, and in response to the detected current and voltage, control the voltage at the output terminal of the power conversion device to adjust to a first target voltage or a second target voltage. Thus, by combining the detected current and voltage to control the increase or decrease of the voltage at the output terminal of the power conversion device, control accuracy can be improved.

[0015] In one possible implementation, the feedback control device includes a feedback detection circuit and a closed-loop control circuit. A first terminal of the feedback detection circuit is connected to the output terminal of the power conversion device, a second terminal of the feedback detection circuit is connected to the first terminal of the closed-loop control circuit, and the second terminal of the closed-loop control circuit is connected to the control terminal of the power conversion device. The feedback detection circuit detects the current and voltage at the output terminal of the power conversion device and outputs a feedback signal to the closed-loop control circuit. In response to the feedback signal, the closed-loop control circuit adjusts the voltage at the output terminal of the power conversion device to either a first target voltage or a second target voltage. Thus, based on the detected current and voltage at the output terminal of the power conversion device, the feedback detection circuit can provide a corresponding feedback signal to the closed-loop control circuit. The closed-loop control circuit can then adjust the voltage at the output terminal of the power conversion device in response to the feedback signal, thereby increasing or decreasing the voltage at the output terminal of the power conversion device to meet the voltage requirements of the electrical equipment and reduce the risk of power outages and damage to the equipment.

[0016] In one possible implementation, the feedback signal includes a first sub-feedback signal and a second sub-feedback signal. The closed-loop control circuit is further configured to, in response to the first sub-feedback signal, control the voltage at the output terminal of the power conversion device to rise to a first target voltage, and, in response to the second sub-feedback signal, control the voltage at the output terminal of the power conversion device to decrease to a second target voltage. When the feedback signal is the first sub-feedback signal, it indicates that the load power consumption of the electrical equipment has increased. To stabilize the voltage at the input terminal of the electrical equipment, the closed-loop control circuit controls the voltage at the output terminal of the power conversion device to rise to the first target voltage, reducing the risk of power failure of the electrical equipment. And when the feedback signal is the second sub-feedback signal, it indicates that the load power consumption of the electrical equipment has decreased. To stabilize the voltage at the input terminal of the electrical equipment, the closed-loop control circuit controls the voltage at the output terminal of the power conversion device to decrease to the second target voltage, reducing the risk of damage to the electrical equipment.

[0017] In one possible implementation, the feedback detection circuit is further configured to detect that the voltage at the output terminal of the power conversion device is less than the first target voltage, and output a first sub-feedback signal to the closed-loop control circuit; and to detect that the voltage at the output terminal of the power conversion device is greater than the second target voltage, and output a second sub-feedback signal to the closed-loop control circuit.

[0018] One possible implementation is that the feedback detection circuit is a hardware circuit, which can improve the detection rate of voltage and current at the output of the power conversion device, and even achieve millisecond-level voltage and current detection, thereby enabling millisecond-level output feedback signals.

[0019] One possible implementation involves a closed-loop control circuit including a control unit. Thus, upon receiving a feedback signal, the control unit can adjust the voltage at the output of the power conversion device, thereby increasing the voltage adjustment rate and potentially achieving millisecond-level rapid dynamic voltage regulation.

[0020] One possible implementation involves a feedback detection circuit comprising a current detection circuit, a voltage detection circuit, and a comparator. The first terminal of the current detection circuit is connected to the output of the power conversion device, and the second terminal is connected to the first input of the comparator. Similarly, the first terminal of the voltage detection circuit is connected to the output of the power conversion device, and the second terminal is connected to the second input of the comparator. The output of the comparator is connected to the first terminal of the closed-loop control circuit. The current detection circuit detects the current at the output of the power conversion device and outputs a target adjustment voltage to the comparator. The voltage detection circuit detects the voltage at the output of the power conversion device and outputs it to the comparator. When the voltage output by the voltage detection circuit is less than the target adjustment voltage, the comparator outputs a first sub-feedback signal to the closed-loop control circuit; when the voltage output by the voltage detection circuit is greater than the target adjustment voltage, the comparator outputs a second sub-feedback signal to the closed-loop control circuit. This design simplifies the implementation of the feedback detection circuit, reducing design complexity and production costs.

[0021] In one possible implementation, the feedback signal output by the feedback detection circuit can also enable the closed-loop control circuit to control the voltage at the output of the power conversion device within a first voltage range, making the voltage at the output of the power conversion circuit approximately constant, thereby reducing power consumption and improving power supply efficiency. Exemplarily, the feedback signal also includes a third sub-feedback signal, which the closed-loop control circuit further uses to control the voltage at the output of the power conversion device within the first voltage range in response to the third sub-feedback signal. Exemplarily, the comparator is used when the voltage output by the voltage detection circuit is the same as or approximately the same as the target adjustment voltage, and the feedback signal output to the closed-loop control circuit is the third sub-feedback signal.

[0022] Secondly, this application provides a power distribution device including a power conversion device. The input terminal of the power conversion device is connected to a power source, and the output terminal is connected to the input terminal of an electrical device. Furthermore, the power conversion device is configured to increase its output voltage in response to an increase in the load power consumption of the electrical device, and decrease its output voltage in response to a decrease in the load power consumption of the electrical device. Therefore, by controlling the voltage at the output terminal of the power conversion device to dynamically adjust in time to follow the load power consumption of the electrical device, the risk of power failure and damage to functional units in the electrical device can be reduced, meeting the voltage stability requirements of the electrical device in different operating scenarios, thereby improving power distribution efficiency.

[0023] In one possible implementation, the power conversion device is also used to reduce power consumption when the load power consumption of the electrical equipment is in a first power range and the voltage at the output of the power conversion device is in a first voltage range.

[0024] One possible implementation involves communication between the electrical device and the power conversion device. The electrical device sends its load power consumption to the power conversion device, and the power conversion device, in response to an increase in the received load power consumption, controls its output voltage to increase. Conversely, the power conversion device, in response to a decrease in the received load power consumption, controls its output voltage to decrease. Furthermore, the power conversion device, in response to the received load power consumption falling within a first power range, controls its output voltage to remain within a first voltage range.

[0025] In one possible implementation, the power distribution equipment further includes a feedback control device. A first terminal of the feedback control device is connected to the output terminal of the power conversion device, and a second terminal is connected to the control terminal of the power conversion device. The feedback control device detects the current at the output terminal of the power conversion device and controls the voltage at that terminal to rise or fall. Therefore, by adding a feedback control device to the power distribution equipment and controlling the voltage at the output terminal of the power conversion device based on the detected current, compared to the power consumption of communication transmission loads, the voltage at the output terminal of the power conversion device can be dynamically adjusted more quickly, improving the timeliness of voltage adjustment.

[0026] It is understood that various implementations of the feedback control device in the second aspect can refer to the relevant descriptions of the embodiments in the first aspect above, and will not be repeated here. It is worth mentioning that various implementations of the feedback control device in the second aspect may also be independent of the implementation method in the first aspect, and may be other implementable methods, which are not limited here.

[0027] Thirdly, this application provides a voltage regulation method applied to power distribution equipment, which includes a power conversion device. The input terminal of the power conversion device is connected to a power source, and the output terminal of the power conversion device is connected to the input terminal of an electrical device. The method includes: increasing the voltage at the output terminal of the power conversion device in response to an increase in the load power consumption of the electrical device; and decreasing the voltage at the output terminal of the power conversion device in response to a decrease in the load power consumption of the electrical device. Therefore, by controlling the voltage at the output terminal of the power conversion device to dynamically adjust in time to follow the load power consumption of the electrical device, the risk of power failure and damage to functional units in the electrical device can be reduced, meeting the voltage stability requirements of the electrical device in different operating scenarios, thereby improving power distribution efficiency.

[0028] One possible implementation involves increasing the voltage at the output of the power conversion device by: responding to an increase in the current at the output of the power conversion device by increasing the voltage at the output of the power conversion device to a first target voltage. This allows for control of the voltage increase at the output of the power conversion device based on the current at the output of the power conversion device, reducing control complexity.

[0029] One possible implementation involves reducing the voltage at the output of the power conversion device by: reducing the voltage at the output of the power conversion device to a second target voltage in response to a decrease in the current at the output of the power conversion device. This allows for control of the voltage reduction at the output of the power conversion device based on the current at the output of the power conversion device, reducing control complexity.

[0030] One possible implementation is that the first target voltage is the sum of a first set voltage and a first port voltage drop. The first port voltage drop is used to indicate the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device increases. The first set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

[0031] One possible implementation is that the second target voltage is the sum of the second set voltage and the second port voltage drop, the second port voltage drop being used to indicate the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device decreases, and the second set voltage being between the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

[0032] One possible implementation is that a stable state where the load power consumption remains unchanged can also occur during the process of changes in the load power consumption of the electrical equipment. Based on this, the method in the embodiments of this application further includes: in response to the load power consumption of the electrical equipment being within a first power range, the voltage at the output terminal of the power conversion device is within a first voltage range, thereby making the voltage at the output terminal of the power conversion device appear to remain constant and reducing power consumption.

[0033] One possible implementation involves controlling the voltage at the output of the power conversion device to be within a first voltage range, in response to the current at the output of the power conversion device being within a first current range. This allows the voltage at the output of the power conversion device to be controlled within the first voltage range based on the current at the output of the power conversion device, reducing control complexity.

[0034] In one possible implementation, the power distribution equipment in this embodiment further includes a feedback control device. A first terminal of the feedback control device is connected to the output terminal of the power conversion device, and a second terminal of the feedback control device is connected to the control terminal of the power conversion device. Furthermore, the feedback control device is used to detect the current at the output terminal of the power conversion device.

[0035] One possible implementation involves raising the voltage at the output of the power conversion device to a first target voltage, including: controlling the voltage at the output of the power conversion device to rise to the first target voltage in response to a current detected by a feedback control device. Therefore, by adding a feedback control device to the power distribution equipment, the feedback control device can control the voltage rise at the output of the power conversion device based on the detected current at the output of the power conversion device. Compared to the power consumption of the communication transmission load, this allows for faster dynamic adjustment of the voltage at the output of the power conversion device, improving the timeliness of voltage adjustment.

[0036] In one possible implementation, the feedback control device is further used to detect the voltage at the output terminal of the power conversion device, and based on this, controls the voltage at the output terminal of the power conversion device to rise to a first target voltage, including: controlling the voltage at the output terminal of the power conversion device to rise to the first target voltage in response to the current and voltage detected by the feedback control device. Therefore, combining the detected current and voltage to control the voltage rise at the output terminal of the power conversion device can improve control accuracy.

[0037] One possible implementation involves reducing the voltage at the output of the power conversion device to a second target voltage, including: controlling the voltage at the output of the power conversion device to decrease to the second target voltage in response to a current detected by a feedback control device. Therefore, by adding a feedback control device to the power distribution equipment, the feedback control device can control the voltage reduction at the output of the power conversion device based on the detected current at the output of the power conversion device. Compared to the power consumption of communication transmission loads, this allows for faster dynamic adjustment of the voltage at the output of the power conversion device, improving the timeliness of voltage adjustment.

[0038] In one possible implementation, the feedback control device is further configured to detect the voltage at the output terminal of the power conversion device, and based on this, control the voltage at the output terminal of the power conversion device to decrease to a second target voltage, including: controlling the voltage at the output terminal of the power conversion device to decrease to the second target voltage in response to the current and voltage detected by the feedback control device. Therefore, combining the detected current and voltage to control the voltage reduction at the output terminal of the power conversion device can improve control accuracy.

[0039] One possible implementation involves controlling the voltage at the output of the power conversion device to be within a first voltage range, including: responding to a current detected by a feedback control device, controlling the voltage at the output of the power conversion device to be within the first voltage range. Therefore, by adding a feedback control device to the power distribution equipment, the feedback control device can control the voltage at the output of the power conversion device to remain approximately constant based on the detected current at the output of the power conversion device. Compared to the power consumption of the communication transmission load, this allows for faster dynamic adjustment of the voltage at the output of the power conversion device, improving the timeliness of voltage adjustment.

[0040] In one possible implementation, the feedback control device is further used to detect the voltage at the output terminal of the power conversion device, and based on this, to control the voltage at the output terminal of the power conversion device to be within a first voltage range, including: controlling the voltage at the output terminal of the power conversion device to be within the first voltage range in response to the current and voltage detected by the feedback control device. Therefore, combining the detected current and voltage to control the voltage at the output terminal of the power conversion device to be within the first voltage range can improve control accuracy.

[0041] One possible implementation involves a feedback control device comprising a feedback detection circuit and a closed-loop control circuit. The first terminal of the feedback detection circuit is connected to the output terminal of the power conversion device, the second terminal of the feedback detection circuit is connected to the first terminal of the closed-loop control circuit, and the second terminal of the closed-loop control circuit is connected to the control terminal of the power conversion device. This makes the implementation of the feedback control device relatively simple, reducing design complexity and production costs.

[0042] One possible implementation involves controlling the voltage at the output of the power conversion device to rise to a first target voltage in response to current and voltage detected by a feedback control device. This includes: a feedback detection circuit detecting the current and voltage at the output of the power conversion device and outputting a feedback signal to a closed-loop control circuit. The closed-loop control circuit, in response to the feedback signal, controls the voltage at the output of the power conversion device to rise to the first target voltage. Therefore, based on the feedback detection circuit and the closed-loop control circuit, the voltage rise at the output of the power conversion device can be controlled, improving the timeliness of dynamic voltage adjustment at the output of the power conversion device.

[0043] One possible implementation involves the feedback signal output to the closed-loop control circuit including a first sub-feedback signal. In response to this feedback signal, the closed-loop control circuit controls the voltage at the output of the power conversion device to rise to a first target voltage. This includes: the closed-loop control circuit responding to the first sub-feedback signal to control the voltage at the output of the power conversion device to rise to the first target voltage. Therefore, based on the first sub-feedback signal, the closed-loop control circuit can promptly control the voltage rise at the output of the power conversion device, further improving the timeliness of dynamic voltage adjustment at the output of the power conversion device.

[0044] One possible implementation involves a feedback signal output to the closed-loop control circuit including a first sub-feedback signal. This sub-feedback signal is generated when a feedback detection circuit detects that the voltage at the output of the power conversion device is lower than a first target voltage, and then outputs the first sub-feedback signal to the closed-loop control circuit. Thus, by detecting that the voltage at the output of the power conversion device is lower than the first target voltage, it indicates that the load power consumption of the electrical equipment has increased. Therefore, the feedback detection circuit outputs the first sub-feedback signal to enable the closed-loop control circuit to promptly control the voltage increase at the output of the power conversion device.

[0045] One possible implementation involves controlling the voltage at the output of the power conversion device to decrease to a second target voltage in response to current and voltage detected by a feedback control device. This includes: a feedback detection circuit detecting the current and voltage at the output of the power conversion device and outputting a feedback signal to a closed-loop control circuit. The closed-loop control circuit, in response to the feedback signal, controls the voltage at the output of the power conversion device to decrease to the second target voltage. Therefore, based on the feedback detection circuit and the closed-loop control circuit, it is possible to control the voltage increase at the output of the power conversion device, improving the timeliness of dynamic voltage adjustment at the output of the power conversion device.

[0046] One possible implementation involves the feedback signal output to the closed-loop control circuit including a second sub-feedback signal. In response to this feedback signal, the closed-loop control circuit controls the voltage at the output of the power conversion device to decrease to a second target voltage. This includes: the closed-loop control circuit responding to the second sub-feedback signal to control the voltage at the output of the power conversion device to decrease to the second target voltage. Therefore, based on the second sub-feedback signal, the closed-loop control circuit can promptly control the voltage reduction at the output of the power conversion device, further improving the timeliness of dynamic voltage adjustment at the output of the power conversion device.

[0047] One possible implementation involves a feedback signal output to the closed-loop control circuit that includes a second sub-feedback signal. This includes the feedback detection circuit detecting that the voltage at the output of the power conversion device is greater than a second target voltage, and then outputting the second sub-feedback signal to the closed-loop control circuit. Thus, by detecting that the voltage at the output of the power conversion device is greater than the second target voltage, it indicates that the load power consumption of the electrical equipment has decreased. Therefore, the feedback detection circuit outputs the second sub-feedback signal to enable the closed-loop control circuit to promptly control the voltage reduction at the output of the power conversion device.

[0048] One possible implementation involves controlling the voltage at the output of the power conversion device to be within a first voltage range in response to the current and voltage detected by the feedback control device. This includes: a feedback detection circuit detecting the current and voltage at the output of the power conversion device and outputting a feedback signal to a closed-loop control circuit. The closed-loop control circuit, in response to the feedback signal, controls the voltage at the output of the power conversion device to be within the first voltage range. Therefore, based on the feedback detection circuit and the closed-loop control circuit, it is possible to control the voltage increase at the output of the power conversion device, improving the timeliness of dynamic voltage adjustment at the output of the power conversion device.

[0049] One possible implementation involves the feedback signal output to the closed-loop control circuit including a third sub-feedback signal. The closed-loop control circuit, in response to the feedback signal, controls the voltage at the output of the power conversion device to be within a first voltage range. This includes: the closed-loop control circuit responding to the third sub-feedback signal to control the voltage at the output of the power conversion device to be within the first voltage range. Therefore, based on the third sub-feedback signal, the closed-loop control circuit can promptly control the voltage at the output of the power conversion device to be within the first voltage range, further improving the timeliness of dynamic voltage adjustment at the output of the power conversion device.

[0050] One possible implementation involves a feedback signal output to the closed-loop control circuit that includes a third sub-feedback signal. This includes the feedback detection circuit detecting that the voltage at the output of the power conversion device is within a first voltage range, and then outputting the third sub-feedback signal to the closed-loop control circuit. Thus, by detecting that the voltage at the output of the power conversion device is within the first voltage range, it can be concluded that the load power consumption of the electrical equipment is within a first power consumption range. Therefore, the feedback detection circuit outputs the third sub-feedback signal to enable the closed-loop control circuit to promptly control the voltage at the output of the power conversion device to remain within the first voltage range.

[0051] Fourthly, this application provides a power supply system, which includes: a power supply device and a power distribution device, wherein the output terminal of the power supply device is connected to the input terminal of the power distribution device, and the output terminal of the power distribution device is used to connect to electrical equipment. The power distribution device is the power distribution device of the first aspect or the embodiments of the first aspect, or the power distribution device is the power distribution device of the second aspect or the embodiments of the second aspect.

[0052] Fifthly, this application provides a system comprising: an electrical appliance and a power distribution device, wherein the output terminal of the power distribution device is connected to the input terminal of the electrical appliance. The power distribution device is either the power distribution device of the first aspect or the embodiments thereof, or the power distribution device is the power distribution device of the second aspect or the embodiments thereof.

[0053] In a sixth aspect, this application provides a computer program product that, when executed, causes a processor to perform the method as described in the third aspect and any possible implementation.

[0054] In a seventh aspect, this application provides a computer-readable storage medium for storing a computer program or instructions that, when executed, implement the methods of the third aspect and any possible implementation.

[0055] The beneficial effects of aspects two through seven can be referred to in the content described in aspect one, and will not be repeated here. Attached Figure Description

[0056] Figure 1A is a schematic diagram of a system provided in an embodiment of this application;

[0057] Figure 1B is a schematic diagram of another structure of the system provided in the embodiment of this application;

[0058] Figure 2 is a schematic diagram of a power distribution equipment provided in an embodiment of this application;

[0059] Figure 3A is a schematic diagram of another structure of the power distribution equipment provided in the embodiment of this application;

[0060] Figure 3B is a schematic diagram of another structure of the power distribution equipment in the embodiment of this application;

[0061] Figure 3C is a schematic diagram of another structure of the power distribution equipment in the embodiments of this application;

[0062] Figure 4 is a signal timing diagram in an embodiment of this application;

[0063] Figure 5 is a circuit topology diagram of a power conversion circuit in an embodiment of this application;

[0064] Figure 6 is a flowchart of the voltage regulation method in an embodiment of this application;

[0065] Figure 7 is a schematic diagram of a power supply system in an embodiment of this application.

[0066] Reference numerals: 100-Power distribution equipment; 110-Power conversion device; 111-Power conversion circuit; 111d-Active full-bridge circuit; 112-Conversion controller; 120-Feedback control device; 121-Feedback detection circuit; 1211-Current detection circuit; 1212-Voltage detection circuit; 1213-Comparator; 122-Closed-loop control circuit; 1221-Control unit; 200-Electrical equipment; 300-Power supply equipment; 400-Power supply; 500-Power supply system. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The specific operational methods in the method embodiments can also be applied to the device embodiments or system embodiments. It should be noted that in the description of this application, "multiple" can be understood as "at least two". Furthermore, it should be understood that in the description of this application, terms such as "first" and "second" are used only for distinguishing purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order.

[0068] It should be noted that the same reference numerals in the accompanying drawings of this application denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but may be modified as needed, and all modifications are included within the scope of protection of this application. The accompanying drawings of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0069] The power distribution equipment, voltage regulation method, power supply system, computer program product, and medium provided in the embodiments of this application are described below with reference to the accompanying drawings.

[0070] The power distribution equipment provided in this application embodiment can be applied to any power supply scenario that requires voltage conversion (e.g., direct current (DC) or alternating current (AC) voltage). For example, the power distribution equipment provided in this application embodiment can be used to supply power to electrical equipment (e.g., base stations) in communication systems, household electrical equipment (e.g., refrigerators, air conditioners, etc.), and industrial and commercial electrical equipment. The power distribution equipment, voltage regulation method, power supply system, computer program product, and medium provided in this application embodiment will be described below with reference to the accompanying drawings.

[0071] Figure 1A is a schematic diagram of a system provided in an embodiment of this application. Referring to Figure 1A, the system provided in this embodiment includes a power distribution device 100 and a power consumption device 200. The power distribution device 100 includes a power conversion device 110. The input terminal of the power conversion device 110 is used to connect to a power supply 400, and the output terminal of the power conversion device 110 is used to connect to the input terminal of the power consumption device 200. Thus, the power supply 400 outputs voltage, and the input terminal of the power conversion device 110 can receive the voltage output by the power supply 400, and then boost or buck the voltage output by the power supply 400 to a voltage suitable for the power consumption device 200 before outputting it to the power consumption device 200 to supply power. Exemplarily, the output terminal of the power conversion device 110 and the input terminal of the power consumption device 200 are connected by a cable. Exemplarily, the voltage output by the power supply 400 is a DC voltage, and the power consumption device 200 is a DC power consumption device; the power conversion device 110 performs a DC-DC conversion process. For example, the power conversion device 110 boosts or bucks the DC voltage output from the power supply 400 to a DC voltage suitable for the electrical equipment 200, and then outputs it to the electrical equipment 200 to supply power to the electrical equipment 200.

[0072] For example, the voltage output by the power supply 400 is a DC voltage, and the electrical device 200 is an AC electrical device. The power conversion device 110 performs a DC-AC conversion process. For instance, the power conversion device 110 boosts or bucks the DC voltage output by the power supply 400 to convert it into an AC voltage suitable for the electrical device 200, and then outputs it to the electrical device 200 to supply power to the electrical device 200.

[0073] For example, the voltage output by the power supply 400 is an AC voltage, and the electrical device 200 is a DC electrical device. The power conversion device 110 performs an AC-DC conversion process. For instance, the power conversion device 110 boosts or bucks the AC voltage output by the power supply 400 to a DC voltage suitable for the electrical device 200, and then outputs it to the electrical device 200 to supply power to the electrical device 200.

[0074] For example, the voltage output by the power supply 400 is AC voltage, and the electrical device 200 is an AC electrical device. The power conversion device 110 performs an AC-AC conversion process. For instance, the power conversion device 110 boosts or bucks the AC voltage output by the power supply 400 to an AC voltage suitable for the electrical device 200, and then outputs it to the electrical device 200 to supply power to the electrical device 200.

[0075] As an example, when the output voltage of power supply 400 is DC voltage, power supply 400 can be a battery (e.g., a storage battery) or an uninterruptible power supply (UPS). Alternatively, power supply 400 can also be a power supply device capable of boosting or bucking to output DC voltage. For example, referring to FIG1B, which is another schematic diagram of a system provided in an embodiment of this application, power supply 400 includes power supply device 300. The input terminal of power supply device 300 is used to connect to AC mains power, and the output terminal of power supply device 300 is connected to the input terminal of power distribution device 100. Power supply device 300 can boost or buck the AC voltage of AC mains power to convert it into DC voltage and output it to power distribution device 100. Exemplarily, when the power supply device is a base station, power supply device 300 can be a cabinet power supply, blade power supply, or other power supply such as a -48V communication power supply, which functions to realize the conversion of AC mains power to -48V communication power supply.

[0076] As another example, when the voltage output by power supply 400 is AC voltage, power supply 400 can be AC ​​mains power. Alternatively, power supply 400 can also be a power supply device capable of performing step-up or step-down conversion to output AC voltage. For example, referring to FIG1B, power supply device 300 can step up or step down AC mains voltage to AC voltage and then output it to power distribution device 100.

[0077] It is understood that the hardware structure of the system shown in Figures 1A and 1B does not constitute a limitation on the system. That is, the system provided in the embodiments of this application may include more or fewer components than shown, may combine two or more components, or may have different component configurations. Furthermore, the various components shown in Figures 1A and 1B can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application-specific integrated circuits.

[0078] In practical applications, the power consumption of electrical equipment typically fluctuates dynamically between high and low levels. Since power distribution equipment is generally connected to the equipment via cables, and the output voltage of traditional power distribution equipment usually remains constant, high power consumption results in significant cable voltage drop and losses. This causes the voltage at the equipment's input terminal to drop, easily exceeding the lower withstand voltage limit and causing a power outage. Conversely, low power consumption results in low cable voltage drop and losses, causing the voltage at the equipment's input terminal to rise, easily exceeding the upper withstand voltage limit and damaging functional units within the equipment (e.g., RRU, RRH, or AAU).

[0079] Therefore, this application provides a power distribution device 100. Referring to Figure 2, which is a structural schematic diagram of the power distribution device provided in this application, the power distribution device 100 includes a power conversion device 110 and a feedback control device 120. The input terminal of the power conversion device 110 is used to connect to a power supply 400, and the output terminal of the power conversion device 110 is used to connect to the input terminal of the electrical device 200. The first terminal of the feedback control device 120 is connected to the output terminal of the power conversion device 110, and the second terminal of the feedback control device 120 is connected to the control terminal of the power conversion device 110. The feedback control device 120 is used to detect the current at the output terminal of the power conversion device 110 and control the voltage at the output terminal of the power conversion device 110 to rise or fall. Specifically, when the current rises, the voltage at the output terminal of the power conversion device rises to a first target voltage; when the current falls, the voltage at the output terminal of the power conversion device falls to a second target voltage. Therefore, based on the detected current at the output terminal of the power conversion device 110, the feedback control device 120 controls the voltage at the output terminal of the power conversion device 110 to be dynamically adjusted in a timely manner, which can reduce the risk of power failure and damage to the electrical equipment 200, meet the voltage stability requirements of the electrical equipment 200 in different working scenarios, and thus improve power distribution efficiency.

[0080] Furthermore, the feedback control device 120 can also control the voltage at the output terminal of the power conversion device 110 to rise or fall, thereby meeting the voltage requirements of the electrical equipment 200 and reducing the risk of power failure and damage to the electrical equipment 200. To improve control accuracy, the feedback control device 120 can also detect the voltage at the output terminal of the power conversion device 110 and, in response to the detected voltage and current, control the voltage at the output terminal of the power conversion device 110 to rise or fall, thus improving control precision. In other words, the feedback control device 120 can detect not only the current at the output terminal of the power conversion device 110 but also the voltage at the output terminal of the power conversion device 110, combining the detected current and voltage to control the voltage at the output terminal of the power conversion device 110 to rise or fall, thereby improving control precision.

[0081] For example, referring to FIG3A, which is a schematic diagram of another structure of the power distribution equipment provided in an embodiment of this application, the feedback control device 120 includes a feedback detection circuit 121 and a closed-loop control circuit 122. A first terminal of the feedback detection circuit 121 is connected to the output terminal of the power conversion device 110, and a second terminal of the feedback detection circuit 121 is connected to the first terminal of the closed-loop control circuit 122. The second terminal of the closed-loop control circuit 122 is connected to the control terminal of the power conversion device 110. Furthermore, the feedback detection circuit 121 has the ability to detect the current or voltage at the output terminal of the power conversion device 110 and can be used to output a feedback signal to the closed-loop control circuit 122. The closed-loop control circuit 122 is configured to control the current at the output terminal of the power conversion device 110 to increase or decrease, or to control the voltage at the output terminal of the power conversion device 110 to increase or decrease, in response to the feedback signal. In other words, the feedback detection circuit 121 can control the closed-loop control circuit 122 to adjust the voltage or current at the output of the power conversion device 110 based on the detected current or voltage at the output of the power conversion device 110. This adjusts the voltage at the output of the power conversion device 110 to meet the voltage requirements of the electrical equipment 200, reducing the risk of power failure and damage to the equipment. Furthermore, the feedback detection circuit 121 is relatively simple to implement, reducing design complexity and production costs.

[0082] For example, the feedback signal includes a first sub-feedback signal and a second sub-feedback signal. Furthermore, the closed-loop control circuit 122 is further configured to, in response to the first sub-feedback signal, control the voltage at the output terminal of the power conversion device 110 to rise to a first target voltage, and, in response to the second sub-feedback signal, control the voltage at the output terminal of the power conversion device 110 to decrease to a second target voltage. That is, the feedback detection circuit 121 can output either the first sub-feedback signal or the second sub-feedback signal to the closed-loop control circuit 122 based on the detected current and voltage at the output terminal of the power conversion device 110. When the feedback signal is the first sub-feedback signal, it indicates that the load power consumption of the electrical equipment 200 has increased. To stabilize the voltage at the input terminal of the electrical equipment 200, the closed-loop control circuit 122 can, in response to the first sub-feedback signal, control the voltage at the output terminal of the power conversion device 110 to rise to the first target voltage to meet the voltage requirements of the electrical equipment 200 and reduce the risk of power failure of the electrical equipment 200. Furthermore, when the feedback signal is the second sub-feedback signal, it indicates that the load power consumption of the electrical equipment 200 has decreased. In order to stabilize the voltage at the input terminal of the electrical equipment 200, the closed-loop control circuit 122 can respond to the second sub-feedback signal and control the voltage at the output terminal of the power conversion device 110 to decrease to the second target voltage, thereby meeting the voltage requirements of the electrical equipment 200 and reducing the risk of damage to the electrical equipment 200. For example, the first sub-feedback signal is a high-voltage signal, and the second sub-feedback signal is a low-voltage signal. Alternatively, the first sub-feedback signal is a low-voltage signal, and the second sub-feedback signal is a high-voltage signal.

[0083] In some embodiments, the voltage at the output of the power conversion device 110 after being increased is the first target voltage U. m1 The first target voltage U m1 The first set voltage U f1 With the first port voltage drop U p1 The sum of, i.e., U m1 =U f1 +U p1 Among them, the voltage drop at the first port U p1 The first set voltage U is used to indicate the voltage drop between the output terminal of the power conversion device 110 and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device 110 increases. f1 The voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical equipment. Based on this, when the load power consumption of the electrical equipment 200 increases, the higher voltage drop between the output terminal of the power conversion device 110 and the input terminal of the electrical equipment 200 is compensated in the voltage at the output terminal of the power conversion device 110. This causes the increased voltage output from the power conversion device 110 to, after offsetting the voltage drop across the cable, approximately raise the voltage input to the input terminal of the electrical equipment 200 to the first set voltage U. f1This ensures that the voltage at the input terminal of the electrical equipment 200 is between its upper and lower withstand voltage limits, thereby reducing the risk of power failure of the electrical equipment 200.

[0084] For example, the first set voltage U f1 This can be the average voltage at the input terminal of the electrical device 200. Alternatively, it can be the first set voltage U. f1 It can also be the average of the upper and lower withstand voltage limits of the input terminal of the electrical equipment 200. In other embodiments of this application, the first set voltage U can also be set according to the needs of the actual application scenario. f1 The withstand voltage limit of the 200 input terminal of the electrical equipment can be flexibly set to any value between the upper and lower withstand voltage limits, without any restrictions.

[0085] In some embodiments, the reduced voltage at the output of the power conversion device 110 is the second target voltage U. m2 The second target voltage U m2 For the second set voltage U f2 With the second port voltage drop U p2 The sum of, i.e., U m2 =U f2 +U p2 Among them, the voltage drop at the second port U p2 The second set voltage U is used to indicate the voltage drop between the output terminal of the power conversion device 110 and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device 110 decreases. f2[ The voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical device 200. Based on this, when the load power consumption of the electrical device 200 decreases, the lower voltage drop between the output terminal of the power conversion device 110 and the input terminal of the electrical device 200 is compensated in the voltage at the output terminal of the power conversion device 110. This causes the reduced output voltage of the power conversion device 110 to, after offsetting the voltage drop across the cable, approximately lower the voltage input to the input terminal of the electrical device 200 to the second set voltage U. f2 This ensures that the voltage at the input terminal of the electrical equipment 200 is between its upper and lower withstand voltage limits, thereby reducing the risk of damage to the electrical equipment 200.

[0086] For example, the second set voltage U f2 This can be the average voltage at the input terminal of the electrical device 200. Alternatively, it can be the second set voltage U. f2 It can also be the average of the upper and lower withstand voltage limits of the input terminal of the electrical equipment 200. In other embodiments of this application, the second set voltage U can also be adjusted according to the needs of the actual application scenario. f2 The withstand voltage limit of the 200 input terminal of the electrical equipment can be flexibly set to any value between the upper and lower withstand voltage limits, without any restrictions.

[0087] In some embodiments, the second set voltage U f2 With the first set voltage U f1 Similarly, this allows the voltage at the output of the power conversion device 110 to be dynamically adjusted to a similar value as the load power consumption of the electrical device 200 increases or decreases, thereby stabilizing the voltage at the input of the electrical device 200 to approximately the same value, further ensuring the stability of the voltage at the input of the electrical device 200. Furthermore, this also reduces the difficulty of control. In other embodiments of this application, the second set voltage U can also be... f2 Greater than or less than the first set voltage U f1 To ensure a flexible and stable voltage at the input terminal of the 200 electrical equipment.

[0088] For example, the first port voltage drop U p1 Second port voltage drop U p2 It can be detected directly or calculated. When the voltage drop at the first port U... p1 Second port voltage drop U p2 When calculated, the voltage drop U at the first port is... p1 It can be I p1 *R, voltage drop at the second port U p2 It can be I p2 *R,I p2 and I p1 The current at the output of the power conversion device 110 detected by the feedback detection circuit 121 is represented by , and R represents the port resistance, which indicates the resistance between the output of the power conversion device 110 and the input of the electrical device 200. Furthermore, the port resistance R can be the same as or approximately the same as the actual resistance between the output of the power conversion device 110 and the input of the electrical device 200. As an example, the port resistance R can be pre-configured in the feedback detection circuit 121; for example, it can be configured to a fixed value offline or online. Alternatively, a communication circuit (e.g., a wired or wireless communication circuit) can be provided in the feedback control device 120, allowing the feedback detection circuit 121 to detect the initial voltage U at the output of the power conversion device 110 during the power-on initialization process of the electrical equipment. s1 and initial current I s Furthermore, the feedback control device 120 communicates with the electrical device 200, and the electrical device 200 outputs its initial input voltage U. s2 The data is sent to the closed-loop control circuit 122 in the feedback control device 120, and the closed-loop control circuit 122 adjusts the data according to the initial voltage U. s1 U s2 and initial current I s The port resistance R is calculated, R = (U s1 -U s2 ) / Is The port resistor R is configured in the feedback detection circuit 121 for use in the process of dynamically adjusting the voltage at the output of the power conversion device 110.

[0089] For example, the feedback detection circuit 121 is further configured to detect that the voltage at the output terminal of the power conversion device 110 is less than the first target voltage, and output a first sub-feedback signal to the closed-loop control circuit 122; and to detect that the voltage at the output terminal of the power conversion device 110 is greater than the second target voltage, and output a second sub-feedback signal to the closed-loop control circuit 122.

[0090] Furthermore, during the process of load power consumption changes in the electrical equipment 200, a stable state in which the load power consumption remains unchanged may also occur. Based on this, the feedback signal output by the feedback detection circuit 121 can also enable the closed-loop control circuit 122 to control the voltage at the output terminal of the power conversion device 110 to be within the first voltage range [U]. m0 -ΔU,U m0 +ΔU], thereby making the voltage U at the output terminal of the power conversion device 110 m0 Approximately treating it as constant, the voltage at the input terminal of the power device remains approximately constant. Therefore, while the load power consumption P1 of the base station remains approximately constant, the voltage U at the output terminal of the power conversion device 110 can be kept constant. m0 The voltage remains approximately constant, reducing power consumption and improving power supply efficiency. For example, the feedback signal further includes a third sub-feedback signal, and the closed-loop control circuit 122 is further configured to, in response to the third sub-feedback signal, control the voltage at the output of the power conversion device 110 to be within a first voltage range [U]. m0 -ΔU,U m0 +ΔU]. Wherein, the lower limit of the first voltage range is U. m0 -ΔU, the upper limit of the first voltage range is U m0 +ΔU,U m0 The voltage at the current output of the power conversion device 110 is ΔU, where ΔU is an error value, an accuracy value, or a value close to zero. For example, the feedback detection circuit 121 is further configured to detect that the voltage at the output of the power conversion device 110 is within a first voltage range [U...]. m0 -ΔU,U m0 +ΔU], outputting a third sub-feedback signal to the closed-loop control circuit 122. For example, the voltage of the third sub-feedback signal is less than the voltage of the first sub-feedback signal, and the voltage of the third sub-feedback signal is greater than the voltage of the second sub-feedback signal.

[0091] In some embodiments of this application, the feedback detection circuit 121 and the closed-loop control circuit 122 can both take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Generally, hardware embodiments have advantages such as stability, reliability, and ease of maintenance, while software embodiments typically suffer from problems such as slower speed, higher memory consumption, and increased storage time. In the embodiments of this application, the feedback detection circuit 121 is a hardware circuit, which can improve the detection rate of voltage and current at the output terminal of the power conversion device 110, and can even achieve millisecond-level voltage and current detection, thereby enabling millisecond-level output feedback signals.

[0092] For example, referring to FIG3B, which is a schematic diagram of another structure of the power distribution equipment provided in the embodiment of this application, the feedback detection circuit 121 may include a current detection circuit 1211, a voltage detection circuit 1212, and a comparator 1213. The first terminal of the current detection circuit 1211 is connected to the output terminal of the power conversion device 110, and the second terminal of the current detection circuit 1211 is connected to the first input terminal of the comparator 1213. The current detection circuit 1211 is used to detect the current I at the output terminal of the power conversion device 110. c The target adjustment voltage U is output to comparator 1213. t The first terminal of the voltage detection circuit 1212 is connected to the output terminal of the power conversion device 110, and the second terminal of the voltage detection circuit 1212 is connected to the second input terminal of the comparator 1213. The voltage detection circuit 1212 is used to detect the voltage U at the output terminal of the power conversion device 110. c The output is then sent to comparator 1213. The output of comparator 1213 is connected to the first terminal of the closed-loop control circuit 122. Comparator 1213 is used in response to the voltage U output by the voltage detection circuit 1212. c Less than the target adjustment voltage U t The feedback signal output to the closed-loop control circuit 122 is the first sub-feedback signal. And, in response to the voltage U output by the voltage detection circuit 1212... c Greater than the target adjustment voltage U t The feedback signal output to the closed-loop control circuit 122 is the second sub-feedback signal. This makes the implementation of the feedback detection circuit 121 relatively simple, reducing design difficulty and production costs.

[0093] For example, the first input terminal of comparator 1213 is a positive input terminal and the second input terminal of comparator 1213 is a negative input terminal, or the first input terminal of comparator 1213 is a negative input terminal and the second input terminal of comparator 1213 is a positive input terminal.

[0094] As an example, the target adjustment voltage U t Satisfying the formula: U t =Uf +I c *R, U f Here, R is the fixed voltage value to be set, and R is the port resistance. The fixed voltage value U is... f First set voltage U f1 Second set voltage U f2 For example, if they are all the same, U c t The first sub-feedback signal output is a high-voltage signal, and the voltage of the first sub-feedback signal is related to U. t -U c Positive correlation, i.e., U t -U c Since it is a positive voltage, the voltage of the first sub-feedback signal is also a positive voltage. Furthermore, U t -U c As the voltage of the first sub-feedback signal increases, U t -U c The voltage of the first sub-feedback signal decreases. Therefore, based on the magnitude and direction of the first sub-feedback signal's voltage, the closed-loop control circuit 122 can determine that the voltage at the output of the power conversion device 110 needs to be increased, and that the voltage at the output of the power conversion device 110 needs to be increased to the target adjustment voltage U. t That is, the target adjustment voltage U at this time t The first target voltage is set to a fixed voltage value U. f The first set voltage U f1 Based on the first sub-feedback signal, the voltage U that has increased to the target adjustment voltage can be determined. t The required voltage change is determined, and a first control signal is output to the power conversion device 110 based on this voltage change to control the voltage at the output terminal of the power conversion device 110 to rise to the first target voltage.

[0095] Furthermore, U c >U t The output second sub-feedback signal is a low voltage signal, and the voltage of the second sub-feedback signal is related to U. t -U c Positive correlation, i.e., U t -U c Since the voltage is negative, the voltage of the second sub-feedback signal is also negative. Furthermore, U t -U c As the voltage of the second sub-feedback signal increases, U t -U c The voltage of the second sub-feedback signal decreases. Therefore, based on the magnitude and direction of the second sub-feedback signal voltage, the closed-loop control circuit 122 can determine that the voltage at the output of the power conversion device 110 needs to be reduced, and that the voltage at the output of the power conversion device 110 needs to be reduced to the target adjustment voltage U.​t That is, the target adjustment voltage U at this time t The second target voltage is set to a fixed voltage value U. f For the second set voltage U f2 Based on the second sub-feedback signal, the target adjustment voltage U can be determined. t The required voltage change is used to output a second control signal to the power conversion device 110, thereby controlling the voltage at the output of the power conversion device 110 to decrease to the second target voltage.

[0096] And, in U c with U t When the voltage of the output third feedback sub-signal is the same or approximately the same within the accuracy or error range, it is related to U. t -U c Positive correlation, i.e., U t -U c When the voltage of the third feedback sub-signal is zero or approximately zero, the voltage of the third feedback sub-signal is also zero or approximately zero. Therefore, based on the voltage of the third feedback sub-signal, the closed-loop control circuit 122 can determine that the voltage at the output of the power conversion device 110 needs to remain constant, and thus outputs a third control signal to the power conversion device 110 to control the voltage at the output of the power conversion device 110 to be within the first voltage range [U]. m0 -ΔU,U m0 +ΔU].

[0097] For example, referring to FIG3B, the closed-loop control circuit 122 includes a control unit 1221. A first terminal of the control unit 1221 is connected to a second terminal (e.g., the output of comparator 1213) of the feedback detection circuit 121, and the first terminal of the control unit 1221 is connected to the control terminal of the power conversion device 110. Upon receiving a feedback signal, the control unit 1221 can control the voltage adjustment at the output of the power conversion device 110 once, improving the voltage adjustment rate at the output of the power conversion device 110, and even achieving millisecond-level fast dynamic voltage regulation. As an example, the control unit 1221 includes, but is not limited to, a microcontroller unit (MCU), a field-programmable gate array (FPGA), a central processing unit (CPU), a general-purpose processor, a digital signal processing unit (DSP), an application-specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.

[0098] Generally, the power conversion device 110 includes a power conversion circuit 111 and a conversion controller 112. The power conversion circuit 111 has a switch, and the conversion controller 112 controls the switching on and off to achieve the conversion function of boosting or bucking the voltage. For example, referring to Figure 3C, which is a schematic diagram of another structure of the power distribution equipment in an embodiment of this application, the power conversion device 110 includes a power conversion circuit 111 and a conversion controller 112. The input terminal of the power conversion circuit 111 serves as the input terminal of the power conversion device 110, and the output terminal of the power conversion circuit 111 serves as the output terminal of the power conversion device 110. The conversion controller 112 is connected to the power conversion circuit 111 and outputs a pulse width modulation (PWM) signal to the switch in the power conversion circuit 111, controlling the power conversion circuit 111 to boost or buck the input voltage before outputting it. Furthermore, the second terminal of the closed-loop control circuit 122 (e.g., the second terminal of the control unit 1221) is connected to the first terminal of the conversion controller 112, outputting a first control signal or a second control signal to the conversion controller 112. The second terminal of the conversion controller 112 is connected to the control terminal of the power conversion circuit 111. The conversion controller 112 can respond to a first control signal by adjusting the PWM signal to increase the voltage at the output terminal of the power conversion circuit 111. Additionally, the conversion controller 112 can respond to a second control signal by adjusting the PWM signal to decrease the voltage at the output terminal of the power conversion circuit 111. The conversion controller 112 can respond to a third control signal to control the voltage at the output terminal of the power conversion circuit 111 to be within a first voltage range [U]. m0 -ΔU,U m0 +ΔU].

[0099] For example, the switches in the power conversion circuit 111 may include a first switch and a second switch. A first terminal of the first switch is connected to the positive terminal of the input terminal of the power conversion device 110, a second terminal of the first switch is connected to the first terminal of the second switch, and a second terminal of the second switch is connected to the negative terminal of the input terminal of the power conversion device 110. For example, the conversion controller 112 can control the first and second switches to conduct complementaryly. Furthermore, to increase the voltage at the output terminal of the power conversion device 110, the conversion controller 112, in response to a first control signal, adjusts the PWM signal to increase the on-time of the first switch, thereby increasing the voltage at the output terminal of the power conversion device 110. And, to decrease the voltage at the output terminal of the power conversion device 110, the conversion controller 112, in response to a second control signal, adjusts the PWM signal to decrease the on-time of the first switch, thereby decreasing the voltage at the output terminal of the power conversion device 110.

[0100] PWM signals typically have a switching frequency and a duty cycle. Therefore, by adjusting the switching frequency and / or duty cycle of the PWM signal, the on / off state of the switch in the power conversion circuit 111 can be adjusted, thereby increasing or decreasing the voltage at the output of the power conversion circuit 111. Exemplarily, in some embodiments of this application, the switching frequency of the PWM signal can be fixed, and its duty cycle can be adjusted to control the on-time of the first switch to increase or decrease. For example, increasing the duty cycle of the PWM signal can increase the on-time of the first switch. Decreasing the duty cycle of the PWM signal can decrease the on-time of the first switch.

[0101] For example, in some embodiments of this application, the switching frequency of the PWM signal is 200kHz to 800kHz, such as 200kHz, 300kHz, 400kHz, 500kHz, 600kHz, 700kHz, 800kHz, etc. In other embodiments of this application, the switching frequency of the PWM signal can also be flexibly set to any value between 200kHz and 800kHz according to the needs of the actual application scenario, and is not limited here.

[0102] Since the power conversion device 110 can implement various conversion methods, for example, when the power conversion device 110 implements DC-DC conversion, the power conversion circuit 111 is a DC-DC conversion circuit. Alternatively, when the power conversion device 110 implements DC-AC conversion, the power conversion circuit 111 is a DC-AC conversion circuit. Alternatively, when the power conversion device 110 implements AC-DC conversion, the power conversion circuit 111 is an AC-DC conversion circuit. Alternatively, when the power conversion device 110 implements AC-AC conversion, the power conversion circuit 111 is an AC-AC conversion circuit.

[0103] For example, the conversion controller 112 includes, but is not limited to, a microcontroller unit (MCU), a field programmable gate array (FPGA), a central processing unit (CPU), a general-purpose processor, a digital signal processing (DSP), an application-specific integrated circuit (ASIC), or any other programmable logic device, transistor logic device, hardware component, or any combination thereof.

[0104] In some embodiments, the power conversion circuit 111 has various topologies to achieve its voltage conversion function. The following example illustrates the power conversion circuit 111 as a DC-DC conversion circuit. In some embodiments of this application, the power conversion circuit 111 can be configured as a buck circuit, a boost circuit, a buck-boost circuit, an active full-bridge circuit, etc. This configuration allows for a simple power conversion circuit 111. Furthermore, the topologies of boost circuits, buck circuits, LLC circuits, buck-boost circuits, or active full-bridge circuits are relatively mature, making the implementation of the power conversion circuit 111 relatively simple, thereby reducing design difficulty and production costs.

[0105] For example, Figure 5 is a circuit topology diagram of a power conversion circuit in an embodiment of this application. Referring to Figure 5, the power conversion circuit 111 is an active full-bridge circuit 111d. For example, the active full-bridge circuit 111d includes switches SD1, SD2, SD3, SD4, SD5, SD6, SD7, SD8, capacitor CD, inductor LD, and transformer T. The first terminals of switches SD1 and SD3 are connected to the positive terminal Vin+ of the input terminal of the power conversion circuit 111. The first terminals of switches SD2 and SD4 are connected to the negative terminal Vin- of the input terminal of the power conversion circuit 111. The second terminals of switches SD1 and SD3 are connected to the first terminal of capacitor CD. The second terminal of capacitor CD is connected to the first terminal of inductor LD. The second terminal of inductor LD is connected to the first terminal of the primary winding of transformer T. The second terminals of switches SD3 and SD4 are connected to the second terminal of the primary winding of transformer T. The first terminals of switches SD5 and SD7 are both connected to the positive terminal Vou+ of the output of power conversion circuit 111. The first terminals of switches SD6 and SD8 are both connected to the negative terminal Vou- of the output of power conversion circuit 111. The second terminals of switches SD5 and SD7 are both connected to the first terminals of the primary and secondary windings of transformer T. The second terminals of switches SD7 and SD8 are both connected to the second terminals of the primary and secondary windings of transformer T. Furthermore, the control terminals of switches SD1 to SD8 are respectively connected to the conversion controller 112. When the active full-bridge circuit 111d is working, the conversion controller 112 outputs PWM signals to switches SD1 to SD8 respectively, controlling the on and off states of switches SD1 to SD8. For example, switches SD1 and SD2 are complementary, switches SD3 and SD4 are complementary, switches SD1 and SD4 can be turned on simultaneously or at different times, and switches SD2 and SD3 can be turned on simultaneously or at different times. Furthermore, switches SD5 and SD6 are complementary in conduction, and switches SD7 and SD8 are complementary in conduction. Switches SD5 and SD8 can conduct simultaneously or at different times, and switches SD6 and SD7 can conduct simultaneously or at different times. Based on this, the first switch includes switches SD1, SD3, SD5, and SD7, and the second switch includes switches SD2, SD4, SD6, and SD8. The first control signal output by the closed-loop control circuit 122 can control the duty cycle of the PWM signal output by the conversion controller 112 to switches SD1, SD3, SD5, and SD7 to increase the conduction time of switches SD1, SD3, SD5, and SD7, thereby increasing the voltage at the output terminal of the active full-bridge circuit 111d.Furthermore, the second control signal output by the closed-loop control circuit 122 can control the duty cycle of the PWM signals output by the conversion controller 112 to the switches SD1, SD3, SD5 and SD7 to decrease, thereby reducing the conduction time of the switches SD1, SD3, SD5 and SD7, and thus reducing the voltage at the output terminal of the active full-bridge circuit 111d.

[0106] It is understood that the switch in the embodiments of this application can be one or more of various types of switching devices, such as relays, metal oxide semiconductor field effect transistors (MOSFETs), bipolar junction transistors (BJTs), insulated gate bipolar transistors (IGBTs), silicon carbide (SiC) MOSFETs, GaN semiconductor devices, and Schottky diodes. These will not be listed individually in the embodiments of this application. Furthermore, each switch can include a first terminal, a second terminal, and a control terminal, wherein the control terminal is used to control the switching on or off. When the switch is on, current can be transferred between the first terminal and the second terminal. When the switch is off, no current can be transferred between the first terminal and the second terminal. Taking a MOSFET as an example, the control terminal of the switch is the gate, the first terminal of the switch can be the source, and the second terminal can be the drain, or the first terminal can be the drain and the second terminal can be the source.

[0107] The following example, using power distribution equipment 100 to supply power to electrical equipment in a communication system, and referring to the signal timing diagram shown in Figure 4, illustrates the process by which the feedback control device 120 controls the voltage change at the output of the power conversion device 110. Furthermore, for ease of explanation, the example below uses a base station as the electrical equipment. In Figure 4, U 110 U represents the voltage at the output of power conversion circuit 111. 200 I represents the voltage at the base station input terminal. 110 This represents the current at the output of the power conversion circuit 111. Furthermore, it is measured at a fixed voltage value U. f First set voltage U f1 Second set voltage U f2 Taking the example where they are all the same.

[0108] During the t1 to t2 phase, the base station's load power consumption increases, and the current at the base station's input also increases. Since the power conversion circuit 111, the cable, and the base station are connected in series, the current at the output of the power conversion circuit 111, the cable, and the base station's input are the same. Therefore, to reduce the difficulty of current detection, the current detection circuit 1211 detects the current I at the output of the power conversion circuit 111. c1 Based on the detected current I c1 Output target adjustment voltage U to comparator 1213 t1 , and U t1 =U f +I c1 *R. Voltage detection circuit 1212 detects the voltage U at the output terminal of power conversion circuit 111. c1 Based on the detected voltage U c1 Output voltage U to comparator 1213 c1 Because of U c1 t1 Comparator 1213 outputs a first sub-feedback signal, which is a high-voltage signal, and the voltage of the first sub-feedback signal is related to U. t1 -U c1 Positive correlation. Based on the voltage and voltage of the first sub-feedback signal, the control unit 1221 determines that the voltage at the output of the power conversion circuit 111 needs to be increased, and that the voltage at the output of the power conversion circuit 111 needs to be increased to the target adjustment voltage U. t1 That is, the target adjustment voltage U at this time t1 The first target voltage U m1 Based on the first sub-feedback signal, the voltage U that has risen to the first target voltage can be determined. m1 The required voltage change is determined, and based on this voltage change, a first control signal is output to the conversion controller 112. In response to the first control signal, the conversion controller 112 controls the voltage at the output of the power conversion circuit 111 to rise to the first target voltage U. m1 Therefore, the first target voltage U at the output of the power conversion circuit 111 m1 After offsetting the voltage drop across the cable, the voltage U input to the base station input terminal can be increased. 200 Approximately raised to the first set voltage U f1 This ensures that the voltage requirements of the base station input are met, reducing the risk of base station power outages.

[0109] During the t2 to t3 phase, the base station's load power consumption decreases, and the current at the output of the power conversion circuit 111 also decreases. The current detection circuit 1211 detects the current I at the output of the power conversion circuit 111. c2 Based on the detected current I c2 Output target adjustment voltage U to comparator 1213 t2 , and U​t2 =U f +I c2 *R. Voltage detection circuit 1212 detects the voltage U at the output terminal of power conversion circuit 111. c2 Based on the detected voltage U c2 Output voltage U to comparator 1213 c2 Because of U c2 >U t2 Comparator 1213 outputs a second sub-feedback signal, which is a low-voltage signal, and the voltage of the second sub-feedback signal is related to U. t2 -U c2 Positive correlation. Based on the voltage and voltage of the second sub-feedback signal, control unit 1221 determines that the voltage at the output of power conversion circuit 111 needs to be reduced, and that the voltage at the output of power conversion circuit 111 needs to be reduced to the target adjustment voltage U. t2 That is, the target adjustment voltage U at this time t2 For the second target voltage U m2 Based on the second sub-feedback signal, the voltage U that has increased to the second target voltage can be determined. m2 The required voltage change is determined, and based on this voltage change, a second control signal is output to the conversion controller 112. In response to the second control signal, the conversion controller 112 controls the voltage at the output of the power conversion circuit 111 to decrease to the second target voltage U. m2 Therefore, the second target voltage U at the output of the power conversion circuit 111 m2 After offsetting the voltage drop across the cable, the voltage U input to the base station input terminal can be increased. 200 Approximately pulled down to the second target voltage U m2 This ensures that the voltage requirements of the base station input are met, reducing the risk of base station damage.

[0110] During stages t3 to t4, the current base station's load power consumption P1 is within the first power range [P1-ΔP, P1+ΔP], which can be approximated as the current base station's load power consumption P1 remaining constant. That is, even as the base station's load power consumption changes, a stable state where the load power consumption remains unchanged will also occur. Here, the lower limit of the first power range is P1-ΔP, and the upper limit is P1+ΔP, where P1 is the current base station's load power consumption, and ΔP is an error value, a precision value, or a value approaching zero. Based on this, the current at the output of the power conversion circuit 111 is within the first current range [I0-ΔI, I0+ΔI], and also remains essentially constant. Here, the lower limit of the first current range is I0-ΔI, and the upper limit of the first voltage range is I0+ΔI, where I0 is the current at the output of the current power conversion device 110, and ΔI is an error value, a precision value, or a value approaching zero. Furthermore, the current detection circuit 1211 detects the current I at the output of the power conversion circuit 111. c3Based on the detected current I c3 Output target adjustment voltage U to comparator 1213 t3 , and U t3 =U f +I c3 *R. Voltage detection circuit 1212 detects the voltage U at the output terminal of power conversion circuit 111. c3 Based on the detected voltage U c3 Output voltage U to comparator 1213 c3 According to U c3 with U t3 Same, or U c3 with U t3 If the values ​​are approximately the same within the accuracy or error range, comparator 1213 outputs a third control signal. Conversion controller 112 responds to the third control signal by controlling the voltage U at the output of power conversion circuit 111. m0 Within the first voltage range [U m0 -ΔU,U m0 Within +ΔU], the voltage U at the output terminal of the power conversion circuit 111 is made... m0 The voltage at the base station input is approximated as constant, thus keeping it approximately constant. Therefore, when the base station's load power consumption P1 remains approximately constant, the voltage U at the output of the power conversion circuit 111 can be kept constant. m0 The power consumption remains approximately the same, reducing power consumption and improving power supply efficiency.

[0111] It is worth noting that after stage t3 to t4, the process from t1 to t2 may occur first, followed by stage t2 to t3. Alternatively, the process from t2 to t3 may occur first, followed by stage t1 to t2; this is not limited here. Furthermore, when stage t3 to t4 reappears, the voltage U at the output of power conversion circuit 111... 110 Approximately maintained as voltage U m0_2 U m0_2 It can be equal to U m0_1 , or U m0_2 Less than or greater than U m0_1 .

[0112] It is understandable that, since the base station input terminal has an equivalent capacitance, due to the effect of the equivalent capacitance, the voltage at the base station input terminal is not a constant value during the process of voltage increase or decrease at the output terminal of the power conversion circuit 111, but has a certain deviation. Therefore, the relationship of "the voltage at the base station input terminal remains approximately unchanged" described in the embodiments of this application is acceptable as long as it roughly meets the above conditions, and all fall within the protection scope of this application.

[0113] In summary, changes in base station load power consumption can be caused by various factors, such as changes in base station service load, base station temperature, and the number of devices in the base station. To meet the different operational requirements of the base station, in this embodiment, when the base station load power consumption increases, the voltage at the output of the power conversion device 110 is increased to stabilize the voltage at the base station input. Thus, the increased voltage output by the power conversion device 110, after offsetting the voltage drop across the cable, can raise the voltage at the base station input, reducing the risk of base station power failure. Furthermore, when the base station load power consumption decreases, the voltage at the output of the power conversion device 110 is decreased to stabilize the voltage at the base station input. Thus, the decreased voltage output by the power conversion device 110, after offsetting the voltage drop across the cable, can lower the voltage at the base station input, reducing the risk of damage to functional units (e.g., RRUs or AAUs) in the base station. Therefore, the power distribution equipment in this application embodiment can dynamically adjust the voltage at the output terminal of the power conversion device 110 in a timely manner to follow the load power consumption of the base station, thereby reducing the risk of base station power failure and damage to functional units (e.g., RRU or AAU) in the base station, meeting the voltage stability requirements of the base station in different working scenarios, and thus improving power distribution efficiency.

[0114] This embodiment of the application dynamically adjusts the voltage at the output terminal of the power conversion device 110 compared to keeping the output voltage constant. This reduces cable loss, lowers the risk of cable overheating and damage, and also reduces energy consumption, saves electricity, and lowers electricity costs. Furthermore, under the same load power consumption, this embodiment of the application, by dynamically adjusting the voltage at the output terminal of the power conversion device 110 compared to keeping the output voltage constant, eliminates the need for additional large-diameter cables. Instead, it allows the use of smaller-diameter or already laid cables to achieve power supply, thus reducing cable costs.

[0115] Based on the same inventive concept and the content described in the above embodiments, this application also provides another power distribution device, which will be described in detail below.

[0116] This application provides a power distribution device, the structure of which can be referred to in Figures 1A and 1B. The power distribution device 100 includes a power conversion device 110. The input terminal of the power conversion device 110 is connected to a power supply 400, and the output terminal of the power conversion device 110 is connected to the input terminal of a power-consuming device 200. However, in this power distribution device, the power conversion device 110 is configured to increase the voltage at its output terminal in response to an increase in the load power consumption of the power-consuming device 200, and decrease the voltage at its output terminal in response to a decrease in the load power consumption of the power-consuming device 200. Therefore, by controlling the voltage at the output terminal of the power conversion device 110 to dynamically adjust in a timely manner according to the load power consumption of the power-consuming device 200, the risk of power failure and damage to functional units in the power-consuming device 200 can be reduced, meeting the voltage stability requirements of the power-consuming device 200 in different operating scenarios, thereby improving power distribution efficiency.

[0117] In some embodiments of this application, hardware embodiments, software embodiments, or a combination of software and hardware embodiments may be used to control the voltage at the output terminal of the power conversion device 110 to rise or fall or remain within a first voltage range. m0 -ΔU,U m0 +ΔU].

[0118] As an example, communication can occur between the power user 200 and the power conversion device 110. The power user 200 sends load power consumption data to the power conversion device 110. In response to an increase in received load power consumption, the power conversion device 110 controls its output voltage to increase. Conversely, in response to a decrease in received load power consumption, the power conversion device 110 controls its output voltage to decrease. Furthermore, in response to received load power consumption falling within a first power range [P1-ΔP, P1+ΔP], the power conversion device 110 controls its output voltage to fall within a first voltage range [U]. m0 -ΔU,U m0 +ΔU].

[0119] As another example, the descriptions related to Figures 2 to 3C in the above content can be regarded as different implementations of the power distribution equipment shown in this embodiment, which will not be elaborated here.

[0120] Based on the same inventive concept and according to the content described in the above embodiments, this application also provides a voltage regulation method, which will be described in detail below.

[0121] This application embodiment also provides a voltage regulation method, which is applied to the power distribution equipment 100 shown in FIG1A and FIG1B. The power distribution equipment 100 includes a power conversion device 110. The input terminal of the power conversion device 110 is used to connect to the power supply 400, and the output terminal of the power conversion device 110 is used to connect to the input terminal of the electrical equipment 200.

[0122] Figure 6 is a flowchart of the voltage regulation method in an embodiment of this application. Referring to Figure 6, the method includes:

[0123] S1. In response to the increase in load power consumption of electrical equipment 200, the voltage at the output terminal of power conversion device 110 increases.

[0124] S2. In response to the decrease in load power consumption of electrical equipment 200, the voltage at the output terminal of power conversion device 110 decreases.

[0125] The method provided in this application embodiment controls the voltage at the output terminal of the power conversion device 110 to dynamically adjust in a timely manner according to the load power consumption of the electrical equipment 200. This can reduce the risk of power failure of the electrical equipment 200 and damage to the functional units in the electrical equipment 200, meet the voltage stability requirements of the electrical equipment 200 in different working scenarios, and thus improve power distribution efficiency.

[0126] It is understood that the embodiments of this application do not limit the order of steps S1 and S2. For example, step S2 can be performed after step S1, or step S2 can be performed after step S1.

[0127] In some embodiments of this application, the voltage increase at the output terminal of the power conversion device 110 includes: in response to an increase in the current at the output terminal of the power conversion device 110, the voltage at the output terminal of the power conversion device 110 increases to a first target voltage. Therefore, the voltage increase at the output terminal of the power conversion device 110 can be controlled based on the current at the output terminal of the power conversion device 110, reducing control complexity.

[0128] In some embodiments of this application, the first target voltage U m1 The first set voltage U f1 With the first port voltage drop U p1 The sum of, i.e., U m1 =U f1 +U p1 Among them, the voltage drop at the first port U p1 The first set voltage U is used to indicate the voltage drop between the output terminal of the power conversion device 110 and the input terminal of the electrical equipment 200 when the current at the output terminal of the power conversion device 110 increases. f1 It is located between the upper and lower withstand voltage limits of the input terminal of the electrical equipment 200. It is understood that the first target voltage U in this embodiment... m1Implementation method, first port voltage drop U p1 The implementation method and the first set voltage U f1 The implementation methods and technical effects can be referred to the relevant implementation methods and technical effects in the above embodiments, and will not be elaborated here.

[0129] In some embodiments of this application, the voltage reduction at the output terminal of the power conversion device 110 includes: in response to a decrease in the current at the output terminal of the power conversion device 110, the voltage at the output terminal of the power conversion device 110 is reduced to a second target voltage. Therefore, the voltage reduction at the output terminal of the power conversion device 110 can be controlled based on the current at the output terminal of the power conversion device 110, reducing the control complexity.

[0130] In some embodiments of this application, the second target voltage U m2 For the second set voltage U f2 With the second port voltage drop U p2 The sum of them is U m2 =U f2 +U p2 Among them, the voltage drop at the second port U p2 The second set voltage U is used to indicate the voltage drop between the output terminal of the power conversion device 110 and the input terminal of the electrical equipment 200 when the current at the output terminal of the power conversion device 110 decreases. f2 It is located between the upper and lower withstand voltage limits of the input terminal of the electrical equipment 200. It is understood that the second target voltage U in this embodiment... m2 Implementation method, second port voltage drop U p2 The implementation method and the second set voltage U f2 The implementation methods and technical effects can be referred to the relevant implementation methods and technical effects in the above embodiments, and will not be elaborated here.

[0131] In some embodiments of this application, a stable state in which the load power consumption of the electrical device 200 remains unchanged may also occur during the process of changes in load power consumption. Based on this, the method in the embodiments of this application further includes: in response to the load power consumption of the electrical device 200 being in a first power range [P1-ΔP, P1+ΔP], the voltage at the output terminal of the power conversion device 110 being in a first voltage range [U m0 -ΔU,U m0 +ΔU]. It is understood that the voltage at the output of the power conversion device 110 in this embodiment is within the first voltage range [U]. m0 -ΔU,U m0 The implementation of [+ΔU], the implementation of the first power range [P1-ΔP, P1+ΔP], and the first voltage range [U m0 -ΔU,U m0The implementation methods and technical effects of +ΔU] can be referred to the relevant implementation methods and technical effects in the above embodiments, and will not be elaborated here.

[0132] In some embodiments of this application, the voltage at the output terminal of the power conversion device 110 is within a first voltage range [U]. m0 -ΔU,U m0 +ΔU], including: in response to the current at the output terminal of the power conversion device 110 being in the first current range [I0-ΔI, I0+ΔI], controlling the voltage at the output terminal of the power conversion device 110 to be in the first voltage range [U]. m0 -ΔU,U m0 +ΔU]. It is understood that the implementation method and technical effects of the first current range [I0-ΔI, I0+ΔI] in this embodiment can refer to the relevant implementation methods and technical effects in the above embodiments, and will not be elaborated here.

[0133] In some embodiments of this application, referring to FIG2, the power distribution equipment 100 in this embodiment further includes a feedback control device 120. A first terminal of the feedback control device 120 is connected to the output terminal of the power conversion device 110, and a second terminal of the feedback control device 120 is connected to the control terminal of the power conversion device 110. Furthermore, the feedback control device 120 is used to detect the current at the output terminal of the power conversion device 110. It is understood that the implementation method and technical effects of the feedback control device 120 in this embodiment can refer to the relevant implementation methods and technical effects in the above embodiments, and will not be elaborated upon here.

[0134] For example, raising the voltage at the output terminal of the power conversion device to a first target voltage includes: controlling the voltage at the output terminal of the power conversion device 110 to rise to the first target voltage in response to the current detected by the feedback control device 120. Therefore, by adding the feedback control device 120 to the power distribution equipment 100, the feedback control device 120 can control the voltage rise at the output terminal of the power conversion device 110 based on the detected current at the output terminal of the power conversion device 110. Compared to the power consumption of the communication transmission load, the voltage at the output terminal of the power conversion device 110 can be dynamically adjusted more quickly, improving the timeliness of voltage adjustment.

[0135] For example, the feedback control device 120 is also used to detect the voltage at the output terminal of the power conversion device 110, and based on this, control the voltage at the output terminal of the power conversion device 110 to rise to a first target voltage, including: in response to the current and voltage detected by the feedback control device 120, controlling the voltage at the output terminal of the power conversion device 110 to rise to the first target voltage.

[0136] For example, reducing the voltage at the output terminal of the power conversion device to a second target voltage includes: controlling the voltage at the output terminal of the power conversion device 110 to decrease to the second target voltage in response to the current detected by the feedback control device 120. Therefore, by adding the feedback control device 120 to the power distribution equipment 100, the feedback control device 120 can control the voltage reduction at the output terminal of the power conversion device 110 based on the detected current at the output terminal of the power conversion device 110. Compared to the power consumption of the communication transmission load, the voltage at the output terminal of the power conversion device 110 can be dynamically adjusted more quickly, improving the timeliness of voltage adjustment.

[0137] For example, the feedback control device 120 is also used to detect the voltage at the output terminal of the power conversion device 110, and based on this, control the voltage at the output terminal of the power conversion device 110 to decrease to a second target voltage, including: in response to the current and voltage detected by the feedback control device 120, controlling the voltage at the output terminal of the power conversion device 110 to decrease to the second target voltage.

[0138] For example, the voltage at the output of the power conversion device is within a first voltage range [U]. m0 -ΔU,U m0 +ΔU], including: in response to the current detected by the feedback control device 120, controlling the voltage at the output of the power conversion device 110 to be within a first voltage range [U]. m0 -ΔU,U m0 Therefore, by adding a feedback control device 120 to the power distribution equipment 100, the feedback control device 120 can control the voltage at the output terminal of the power conversion device 110 to remain approximately constant based on the detected current at the output terminal of the power conversion device 110. Compared with the power consumption of the communication transmission load, the voltage at the output terminal of the power conversion device 110 can be dynamically adjusted quickly, thereby improving the timeliness of voltage adjustment.

[0139] For example, the feedback control device 120 is also used to detect the voltage at the output terminal of the power conversion device 110, and based on this, control the voltage at the output terminal of the power conversion device 110 to be within a first voltage range [U]. m0 -ΔU,U m0 +ΔU], including: in response to the current and voltage detected by the feedback control device 120, controlling the voltage at the output of the power conversion device 110 to be within a first voltage range [U]. m0 -ΔU,U m0 +ΔU].

[0140] In some embodiments of this application, referring to FIG3A, the feedback control device 120 includes a feedback detection circuit 121 and a closed-loop control circuit 122. The first terminal of the feedback detection circuit 121 is connected to the output terminal of the power conversion device 110, the second terminal of the feedback detection circuit 121 is connected to the first terminal of the closed-loop control circuit 122, and the second terminal of the closed-loop control circuit 122 is connected to the control terminal of the power conversion device 110.

[0141] For example, in response to the current and voltage detected by the feedback control device 120, controlling the voltage at the output terminal of the power conversion device 110 to rise to a first target voltage includes: the feedback detection circuit 121 detecting the current and voltage at the output terminal of the power conversion device 110 and outputting a feedback signal to the closed-loop control circuit 122. The closed-loop control circuit 122, in response to the feedback signal, controls the voltage at the output terminal of the power conversion device 110 to rise to the first target voltage.

[0142] For example, the feedback signal output to the closed-loop control circuit 122 includes a first sub-feedback signal. In response to the feedback signal, the closed-loop control circuit 122 controls the voltage at the output terminal of the power conversion device 110 to rise to a first target voltage, including: in response to the first sub-feedback signal, the closed-loop control circuit 122 controls the voltage at the output terminal of the power conversion device 110 to rise to the first target voltage.

[0143] For example, the feedback signal output to the closed-loop control circuit 122 includes a first sub-feedback signal, which includes: the feedback detection circuit 121 detects that the voltage at the output terminal of the power conversion device 110 is less than the first target voltage, and outputs the first sub-feedback signal to the closed-loop control circuit 122.

[0144] For example, in response to the current and voltage detected by the feedback control device 120, the voltage at the output terminal of the power conversion device 110 is reduced to a second target voltage. This includes: the feedback detection circuit 121 detecting the current and voltage at the output terminal of the power conversion device 110 and outputting a feedback signal to the closed-loop control circuit 122. The closed-loop control circuit 122, in response to the feedback signal, controls the voltage at the output terminal of the power conversion device 110 to reduce to the second target voltage.

[0145] For example, the feedback signal output to the closed-loop control circuit 122 includes a second sub-feedback signal. In response to the feedback signal, the closed-loop control circuit 122 controls the voltage at the output terminal of the power conversion device 110 to decrease to a second target voltage, including: in response to the second sub-feedback signal, the closed-loop control circuit 122 controls the voltage at the output terminal of the power conversion device 110 to decrease to a second target voltage.

[0146] For example, the feedback signal output to the closed-loop control circuit 122 includes a second sub-feedback signal, which includes: the feedback detection circuit 121 detects that the voltage at the output terminal of the power conversion device 110 is greater than the second target voltage, and outputs the second sub-feedback signal to the closed-loop control circuit 122.

[0147] For example, in response to the current and voltage detected by the feedback control device 120, the voltage at the output of the power conversion device 110 is controlled to be within a first voltage range [U]. m0 -ΔU,U m0 The feedback detection circuit 121 detects the current and voltage at the output terminal of the power conversion device 110 and outputs a feedback signal to the closed-loop control circuit 122. In response to the feedback signal, the closed-loop control circuit 122 controls the voltage at the output terminal of the power conversion device 110 to be within the first voltage range [U]. m0 -ΔU,U m0 +ΔU].

[0148] For example, the feedback signal output to the closed-loop control circuit 122 includes a third sub-feedback signal, and the closed-loop control circuit 122 responds to the feedback signal by controlling the voltage at the output of the power conversion device 110 to be within a first voltage range [U]. m0 -ΔU,U m0 +ΔU], including: the closed-loop control circuit 122 responds to the third sub-feedback signal to control the voltage at the output of the power conversion device 110 to be within the first voltage range [U]. m0 -ΔU,U m0 +ΔU].

[0149] For example, the feedback signal output to the closed-loop control circuit 122 includes a third sub-feedback signal, including: the feedback detection circuit 121 detects that the voltage at the output of the power conversion device 110 is within a first voltage range [U]. m0 -ΔU,U m0 +ΔU], outputs the third sub-feedback signal to the closed-loop control circuit 122.

[0150] Understandably, the voltage at the output of the control power conversion device 110 rises or falls, or falls within a first voltage range [U]. m0 -ΔU,U m0 Other implementation methods and technical effects of +ΔU] can be referred to the relevant implementation methods and technical effects in the above embodiments, which will not be elaborated here.

[0151] It is worth mentioning that the various implementation methods in this embodiment may not depend on the implementation methods of the above embodiments, and may be other implementable methods, which are not limited here.

[0152] Based on the same inventive concept, this application also provides a power supply system. Referring to Figure 7, which is a structural schematic diagram of the power supply system in this application embodiment, the power supply system 500 in this application embodiment includes a power supply device 300 and a power distribution device 100. The output terminal of the power supply device 300 is connected to the input terminal of the power distribution device 100, and the output terminal of the power distribution device 100 is used to connect to the electrical device 200. The power distribution device 100 is the power distribution device 100 in this application embodiment. Because the power distribution device 100 has good performance, the power supply system including the power distribution device 100 also has good performance. Furthermore, the implementation methods and technical effects of the power supply device 300 and the power distribution device 100 can be referred to the relevant implementation methods and technical effects in the above embodiments, and will not be elaborated here.

[0153] For example, referring to FIG7, the input terminal of the power supply device 300 is used to connect to the mains power, thereby converting the AC voltage of the mains power into DC voltage by stepping up or stepping down, and then outputting it to the power distribution device 100. The power distribution device 100 can convert the input DC voltage into DC voltage suitable for the electrical device 200, and then output it to the electrical device 200 to supply power to the electrical device 200.

[0154] Based on the same inventive concept, this application also provides a computer-readable storage medium for storing computer programs or instructions that, when run, implement the above-described voltage regulation method.

[0155] Based on the same inventive concept, embodiments of this application provide a program product that, when executed, enables a processor to implement the aforementioned voltage regulation method. This program product is, for example, a computer program product, specifically a computer program and / or instructions. The processor is, for example, a processor running in a computer.

[0156] The above description is only a specific implementation of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A power distribution apparatus, characterized by, The power distribution equipment includes a power conversion device and a feedback control device. The input terminal of the power conversion device is used to connect to the power supply, and the output terminal of the power conversion device is used to connect to the input terminal of the electrical equipment. The first terminal of the feedback control device is connected to the output terminal of the power conversion device, and the second terminal of the feedback control device is connected to the control terminal of the power conversion device. The feedback control device is used to: detect the current at the output terminal of the power conversion device, and control the voltage at the output terminal of the power conversion device to adjust to a first target voltage or a second target voltage; when the current increases, the voltage at the output terminal of the power conversion device increases to the first target voltage, and when the current decreases, the voltage at the output terminal of the power conversion device decreases to the second target voltage.

2. The power distribution apparatus of claim 1, wherein The first target voltage is the sum of a first set voltage and a first port voltage drop. The first port voltage drop indicates the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical device when the current at the output terminal of the power conversion device increases. The first set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical device; or... The second target voltage is the sum of the second set voltage and the second port voltage drop. The second port voltage drop is used to indicate the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device decreases. The second set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

3. The power distribution apparatus of claim 1 or 2, wherein The feedback control device is further configured to: detect the voltage at the output terminal of the power conversion device, and in response to the detected current and voltage, control the voltage at the output terminal of the power conversion device to be adjusted to the first target voltage or the second target voltage.

4. The power distribution apparatus of any one of claims 1-3, wherein, The feedback control device includes a feedback detection circuit and a closed-loop control circuit; The first terminal of the feedback detection circuit is connected to the output terminal of the power conversion device, and the second terminal of the feedback detection circuit is connected to the first terminal of the closed-loop control circuit. The feedback detection circuit is used to detect the current and voltage at the output terminal of the power conversion device and output a feedback signal to the closed-loop control circuit. The second terminal of the closed-loop control circuit is connected to the control terminal of the power conversion device. The closed-loop control circuit is used to respond to the feedback signal and control the voltage at the output terminal of the power conversion device to adjust to the first target voltage or the second target voltage.

5. The power distribution apparatus of claim 4, wherein, The feedback signal includes a first sub-feedback signal and a second sub-feedback signal; The closed-loop control circuit is further configured to, in response to the first sub-feedback signal, control the voltage at the output terminal of the power conversion device to rise to a first target voltage, and in response to the second sub-feedback signal, control the voltage at the output terminal of the power conversion device to decrease to a second target voltage.

6. The power distribution apparatus of claim 5, wherein, The feedback detection circuit is further used for: If the voltage at the output terminal of the power conversion device is detected to be less than the first target voltage, the first sub-feedback signal is output to the closed-loop control circuit. If the voltage at the output of the power conversion device is detected to be greater than the second target voltage, the second sub-feedback signal is output to the closed-loop control circuit.

7. The power distribution apparatus of any of claims 4-6, wherein, The feedback detection circuit is a hardware circuit, or the closed-loop control circuit includes a control unit.

8. The power distribution apparatus of any of claims 4-7, wherein, The feedback detection circuit includes a current detection circuit, a voltage detection circuit, and a comparator; The first terminal of the current detection circuit is connected to the output terminal of the power conversion device, and the second terminal of the current detection circuit is connected to the first input terminal of the comparator. The circuit is used to detect the current at the output terminal of the power conversion device and output the target adjustment voltage to the comparator. The first terminal of the voltage detection circuit is connected to the output terminal of the power conversion device, and the second terminal of the current detection circuit is connected to the second input terminal of the comparator, for detecting the voltage at the output terminal of the power conversion device and outputting it to the comparator; The output terminal of the comparator is connected to the first terminal of the closed-loop control circuit. When the voltage output by the voltage detection circuit is less than the target adjustment voltage, the feedback signal output to the closed-loop control circuit is a first sub-feedback signal. When the voltage output by the voltage detection circuit is greater than the target adjustment voltage, the feedback signal output to the closed-loop control circuit is a second sub-feedback signal.

9. A power distribution apparatus, comprising: The power distribution equipment includes a power conversion device, the input end of which is used to connect to a power source, and the output end of which is used to connect to the input end of the power-consuming equipment. The power conversion device is used for: In response to an increase in the load power consumption of the electrical equipment, the voltage at the output terminal of the power conversion device increases; In response to the reduction in load power consumption of the electrical equipment, the voltage at the output terminal of the power conversion device decreases.

10. The power distribution apparatus of claim 9, wherein, The voltage at the output terminal of the power conversion device after the voltage rises is the first target voltage. The first target voltage is the sum of the first set voltage and the first port voltage drop. The first port voltage drop is used to indicate the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device rises. The first set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical equipment. or, The voltage at the output terminal of the power conversion device after the voltage drop is the second target voltage. The second target voltage is the sum of the second set voltage and the second port voltage drop. The second port voltage drop is used to indicate the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device decreases. The second set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

11. The power distribution apparatus of claim 9 or 10, wherein, The power conversion device is also used for: In response to the load power consumption of the electrical equipment being within a first power range, the voltage at the output terminal of the power conversion device is within a first voltage range.

12. The power distribution apparatus of any of claims 9-11, wherein, It also includes a feedback control device, the first end of which is connected to the output end of the power conversion device, and the second end of which is connected to the control end of the power conversion device; The feedback control device is used to: detect the current at the output terminal of the power conversion device and control the voltage at the output terminal of the power conversion device to rise or fall.

13. The power distribution apparatus of claim 12, wherein, The feedback control device is also used to: detect the voltage at the output terminal of the power conversion device, and control the voltage at the output terminal of the power conversion device to increase or decrease in response to the detected current and voltage.

14. The power distribution apparatus of claim 12 or 13, wherein, The feedback control device includes a feedback detection circuit and a closed-loop control circuit; The first terminal of the feedback detection circuit is connected to the output terminal of the power conversion device, and the second terminal of the feedback detection circuit is connected to the first terminal of the closed-loop control circuit. The feedback detection circuit is used to detect the current and voltage at the output terminal of the power conversion device and output a feedback signal to the closed-loop control circuit. The second terminal of the closed-loop control circuit is connected to the control terminal of the power conversion device. The closed-loop control circuit is used to control the voltage at the output terminal of the power conversion device to rise or fall in response to the feedback signal.

15. The power distribution apparatus of claim 14, wherein, The feedback signal includes a first sub-feedback signal and a second sub-feedback signal; The closed-loop control circuit is further configured to, in response to the first sub-feedback signal, control the voltage at the output terminal of the power conversion device to rise to a first target voltage, and in response to the second sub-feedback signal, control the voltage at the output terminal of the power conversion device to decrease to a second target voltage.

16. The power distribution apparatus of claim 15, wherein The feedback detection circuit is further used for: If the voltage at the output terminal of the power conversion device is detected to be less than the first target voltage, the first sub-feedback signal is output to the closed-loop control circuit. If the voltage at the output of the power conversion device is detected to be greater than the second target voltage, the second sub-feedback signal is output to the closed-loop control circuit.

17. The power distribution apparatus of any of claims 14-16, wherein, The feedback detection circuit is a hardware circuit, or the closed-loop control circuit includes a control unit.

18. The power distribution apparatus of any of claims 14-17, wherein, The feedback detection circuit includes a current detection circuit, a voltage detection circuit, and a comparator; The first terminal of the current detection circuit is connected to the output terminal of the power conversion device, and the second terminal of the current detection circuit is connected to the first input terminal of the comparator. The circuit is used to detect the current at the output terminal of the power conversion device and output the target adjustment voltage to the comparator. The first terminal of the voltage detection circuit is connected to the output terminal of the power conversion device, and the second terminal of the current detection circuit is connected to the second input terminal of the comparator, for detecting the voltage at the output terminal of the power conversion device and outputting it to the comparator; The output terminal of the comparator is connected to the first terminal of the closed-loop control circuit. When the voltage output by the voltage detection circuit is less than the target adjustment voltage, the feedback signal output to the closed-loop control circuit is a first sub-feedback signal. When the voltage output by the voltage detection circuit is greater than the target adjustment voltage, the feedback signal output to the closed-loop control circuit is a second sub-feedback signal.

19. A method of regulating pressure, characterized by, The method is applied to power distribution equipment, which includes a power conversion device. The input terminal of the power conversion device is used to connect to a power source, and the output terminal of the power conversion device is used to connect to the input terminal of the electrical equipment. The method includes: In response to an increase in the load power consumption of the electrical equipment, the voltage at the output terminal of the power conversion device increases; In response to the reduction in load power consumption of the electrical equipment, the voltage at the output terminal of the power conversion device decreases.

20. The method of claim 19, wherein, The voltage increase at the output terminal of the power conversion device includes: in response to an increase in the current at the output terminal of the power conversion device, the voltage at the output terminal of the power conversion device increases to a first target voltage; or... The voltage reduction at the output terminal of the power conversion device includes: in response to a decrease in the current at the output terminal of the power conversion device, the voltage at the output terminal of the power conversion device is reduced to a second target voltage.

21. The method of claim 20, wherein, The first target voltage is the sum of a first set voltage and a first port voltage drop. The first port voltage drop indicates the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical device when the current at the output terminal of the power conversion device increases. The first set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical device; or... The second target voltage is the sum of the second set voltage and the second port voltage drop. The second port voltage drop is used to indicate the voltage drop between the output terminal of the power conversion device and the input terminal of the electrical equipment when the current at the output terminal of the power conversion device decreases. The second set voltage is between the upper and lower withstand voltage limits of the input terminal of the electrical equipment.

22. A power supply system characterized by comprising: include: Power supply equipment and power distribution equipment, wherein the output terminal of the power supply equipment is connected to the input terminal of the power distribution equipment, and the output terminal of the power distribution equipment is used to connect to electrical equipment; The power distribution equipment is the power distribution equipment as described in any one of claims 1-8, or the power distribution equipment is the power distribution equipment as described in any one of claims 9-18.

23. A computer program product, characterised in that, When the computer program product is executed, it causes the processor to perform the method as described in any one of claims 19-21.

24. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 19-21.

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