Power supply control method, power distribution device and computer readable storage medium

Abstract

The application discloses a power supply control method, a power distribution device and a computer readable storage medium. The power supply control method is applied to the power distribution device. The power distribution device comprises a plurality of input branches and a bus. The input branches are connected with the bus. Each input branch is used for connecting a power supply source. Each input branch comprises at least one input switch and one voltage conversion module. The voltage conversion module is connected with a bypass in parallel. When receiving an input source switching instruction, the power supply control method first acquires a bus voltage. When the bus voltage is greater than a preset threshold, the power supply source is switched according to the input source switching instruction. When the bus voltage is less than the preset threshold, the voltage conversion module is first controlled to step up the input voltage of the current input branch, so that the bus voltage is above the preset threshold. Then, the power supply source is further switched according to the input source switching instruction, so that the sudden power failure of the load during the switching of the power supply source can be avoided.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a power supply control method, power distribution equipment, and computer-readable storage medium. Background Technology

[0002] Power distribution equipment, as a type of power distribution device, can connect to multiple input power sources and multiple output loads, and distribute the power from the multiple input power sources according to the power demand of the multiple output loads. When power distribution equipment is connected to multiple input power sources, the multiple input power sources will converge on the bus of the power distribution equipment, and then be output to multiple output branches through the bus, and then output to the corresponding loads.

[0003] However, in related technologies, when the power distribution equipment is connected to a load, and the input power is switched based on the input source switching command, the load often loses power at the moment of input power switching, which affects the normal use of the load. Summary of the Invention

[0004] To address the issue of load power loss during input power switching, this application provides a power supply control method, power distribution equipment, and a computer-readable storage medium.

[0005] According to one aspect of the embodiments of this application, a power supply control method is disclosed, which is applied to power distribution equipment. The power distribution equipment includes multiple input branches and a busbar. The input branches are connected to the busbar. Each input branch is used to connect to a power supply. Each input branch includes at least one input switch and a voltage conversion module. The voltage conversion module is connected in parallel with a bypass switch. The power supply control method includes:

[0006] Upon receiving an input source switching instruction, the bus voltage on the bus is obtained. The input source switching instruction is used to select at least one input branch from the plurality of input branches as the target input branch.

[0007] When the bus voltage is greater than a preset threshold, the input switch of the current input branch is opened based on the input source switching command, and the input switch and bypass switch of the target input branch are closed.

[0008] When the bus voltage is less than the preset threshold, the bypass switch of the current input branch is opened, and the voltage conversion module is controlled to boost the input voltage of the current input branch to increase the bus voltage. When the bus voltage is greater than the preset threshold, the input switch of the current input branch is opened based on the input source switching command, and the input switch and bypass switch of the target input branch are closed.

[0009] In one exemplary embodiment, the power distribution equipment further includes multiple output branches connected to the busbar. These output branches are used to connect electrical devices before acquiring the busbar voltage. The power supply control method further includes: acquiring device information of the currently connected electrical devices on the output branches; determining, based on the device information, whether the currently connected electrical device is a sensitive device, wherein a sensitive device is an electrical device that will experience a power outage when the input source switching time interval is less than or equal to a first preset duration; if the currently connected electrical device is not a sensitive device, controlling the input switch of the current input branch to open based on the input source switching command, and controlling the input switch and bypass switch of the target input branch to close; if the currently connected electrical device is a sensitive device, then performing the step of acquiring the busbar voltage.

[0010] In one exemplary embodiment, determining whether the current electrical device is a sensitive device based on the device information includes: obtaining a switching limit parameter from the device information that allows the current electrical device to switch input sources; if the switching limit parameter is less than or equal to a first preset duration, then the current electrical device is a sensitive device; if the switching limit parameter is greater than the first preset duration, then the current electrical device is not a sensitive device.

[0011] In an exemplary embodiment, before obtaining the device information of the current electrical device connected to the output branch, the power supply control method further includes: confirming whether there is an electrical device connected to the output branch; if there is no electrical device connected to the output branch, controlling the input switch of the current input branch to be turned off; if there is an electrical device connected to the output branch, then performing the step of obtaining the device information of the current electrical device connected to the output branch.

[0012] In one exemplary embodiment, the bus is an AC bus, the voltage conversion module is an AC-AC conversion module, and the power supply includes at least one DC power supply. The input branch connected to the DC power supply among the plurality of input branches is a DC input branch, and an inverter module is installed on the DC input branch. The power supply control method further includes: when the DC input branch is connected to the AC bus, controlling the inverter module to convert the DC power input from the DC power supply into AC power and then inputting it into the DC input branch.

[0013] In one exemplary embodiment, the bus is a DC bus, and a bus capacitor is connected to the DC bus. The voltage conversion module is a DC-DC conversion module, and the power supply includes at least one AC power supply. The input branch connected to the AC power supply among the plurality of input branches is an AC input branch, and a rectifier module is provided on the AC input branch. The power supply control method further includes: when the AC input branch is connected to the DC bus, controlling the rectifier module to convert the AC power input from the AC power supply into DC power before inputting it into the AC input branch.

[0014] In one exemplary embodiment, the power distribution equipment further includes multiple output branches connected to the busbar. These output branches are used to connect electrical equipment. The multiple input branches include at least one DC input branch and at least one AC input branch. The DC input branch is used to connect an energy storage device, and the AC input branch is used to connect an AC power source. The input switch corresponding to the DC input branch is a DC input switch, and the input switch corresponding to the AC input branch is an AC input switch. The power supply control method further includes: determining whether any electrical equipment is connected to the output branch; if no electrical equipment is connected to the output branch, and the current input branch is the AC input branch, then controlling the DC input switch to close, so that the AC power source charges the energy storage device.

[0015] In one exemplary embodiment, before controlling the DC input switch to close, the power supply control method further includes: acquiring the remaining power of the energy storage device; if the remaining power is less than or equal to a power threshold, controlling the DC input switch to close; if the remaining power is greater than the power threshold, controlling the DC input switch to open.

[0016] According to one aspect of the embodiments of this application, a power distribution device is disclosed, which includes multiple input branches, a bus, and a main control module. The input branches are connected to the bus, each input branch is used to connect to a power supply, each input branch includes at least one input switch and a voltage conversion module, the voltage conversion module is connected in parallel with a bypass switch, and the main control module is electrically connected to each input switch and bypass switch and is configured to execute the power supply control method described above.

[0017] According to one aspect of the embodiments of this application, a computer-readable storage medium is disclosed, the computer-readable storage medium storing computer-readable instructions, which, when executed by a computer's processor, cause the computer to perform the power supply control method as described above.

[0018] The technical solutions provided by the embodiments of this application have at least the following beneficial effects:

[0019] The power supply control method disclosed in this application is applied to power distribution equipment, which includes multiple input branches and a busbar. Each input branch is connected to a corresponding power supply. Each input branch includes at least one input switch and one voltage conversion module, with a bypass switch connected in parallel to the voltage conversion module. Upon receiving an input source switching command, the power supply control method first acquires the busbar voltage. If the busbar voltage is greater than a preset threshold, it controls the input switch of the current input branch to open according to the input source switching command, and controls the input switch and bypass switch of the target input branch to close. If the busbar voltage is less than the preset threshold, it controls the bypass switch of the current input branch to open, and controls the voltage conversion module to boost the input voltage of the current input branch to increase the busbar voltage. If the busbar voltage is greater than the preset threshold, it controls the input switch of the current input branch to open according to the input source switching command, and controls the input switch and bypass switch of the target input branch to close. The solution proposed in this application allows power distribution equipment to switch input sources. If the bus voltage is lower than a preset threshold, the voltage conversion module can be used to boost the input voltage of the current input branch before switching. This ensures that the bus voltage on the power distribution equipment remains above the preset threshold during input source switching, preventing sudden power loss during power supply changes, ensuring normal load operation, and improving user experience.

[0020] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the principles of this application.

[0022] Figure 1 A schematic diagram of the power distribution equipment provided in one embodiment of this application is shown.

[0023] Figure 2 A flowchart illustrating a power supply control method provided in one embodiment of this application is shown schematically.

[0024] Figure 3 A schematic diagram of the power distribution equipment provided in one embodiment of this application is shown.

[0025] Figure 4 A schematic diagram of the power distribution equipment provided in one embodiment of this application is shown.

[0026] Figure 5A schematic diagram of the power distribution equipment provided in one embodiment of this application is shown.

[0027] Figure 6 A schematic diagram of the power distribution equipment provided in one embodiment of this application is shown.

[0028] Figure 7 A flowchart illustrating a power supply control method provided in one embodiment of this application is shown schematically.

[0029] Figure 8 A flowchart illustrating a power supply control method provided in one embodiment of this application is shown schematically.

[0030] Figure 9 The illustration schematically shows a specific application scenario of the power supply control method provided in one embodiment of this application.

[0031] Figure 10 A schematic diagram of a computer system architecture for a power distribution device provided in one embodiment of this application is shown. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this application will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0033] In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0035] In related technologies, when power distribution equipment is connected to multiple input power sources and the input power is switched, if the bus voltage on the power distribution equipment is low, the bus voltage cannot maintain the power supply to the load for a short period of time, resulting in a power outage of the load when switching input power sources, thereby affecting the normal use of the load. Therefore, this application provides a power supply control method suitable for power distribution equipment to solve the problem of load power outage when switching input power sources.

[0036] Figure 1 A schematic diagram of the architecture of a power distribution device provided in one embodiment of this application is shown. Figure 1 As shown, the power distribution equipment includes multiple input branches (e.g. Figure 1The circuit consists of two input branches (LI1 and LI2), a bus (BUS), and multiple output branches (L0). Each input branch is connected to the bus (BUS) and corresponds to a specific power supply. Each input branch includes at least one input switch and one voltage conversion module, with a bypass switch connected in parallel to the voltage conversion module. Figure 1 As shown, when there are two input branches, input branch LI1 includes an input switch KI1 and a voltage conversion module 11, with a bypass switch D1 connected in parallel with the voltage conversion module 11. Input branch LI2 includes an input switch KI2 and a voltage conversion module 12, with a bypass switch D2 connected in parallel with the voltage conversion module 12. Multiple output branches L0 are all connected to the bus BUS, and each output branch L0 is used to connect electrical equipment.

[0037] When the input switch KI1 on input branch LI1 is closed and the bypass switch D1 is also closed, the input voltage of input branch LI1 is directly supplied to the bus BUS via the bypass instead of passing through the voltage conversion module 11. Power is then supplied to the bus BUS through input branch LI1 to further power the electrical equipment. When the input switch KI1 on input branch LI1 is closed and the bypass switch D1 is open, the input voltage of input branch LI1 can be boosted by the voltage conversion module 11 before being supplied to the bus BUS. The same principle applies to input branch LI2, and will not be elaborated further here.

[0038] Input branches LI1 and LI2 can be DC input branches, and the power supply connected to the corresponding DC input branch is a DC power supply. Input branches LI1 and LI2 can also be AC ​​input branches, and the power supply connected to the corresponding AC input branch is an AC power supply.

[0039] It should be noted that, Figure 1 The power distribution equipment provided includes two input branches, which is only one exemplary embodiment of this application. In other embodiments, the power distribution equipment may include more than two input branches, such as three input branches, four input branches, five input branches, etc.

[0040] The busbar can be a DC bus with a bus capacitor connected to it; correspondingly, the voltage conversion module can be a DC-DC conversion module. The busbar can also be an AC bus; accordingly, the voltage conversion module can be an AC-AC conversion module. If the input of an input branch and the busbar type are inconsistent—for example, if the input of the input branch is DC and the busbar is AC—the voltage conversion module can be a DC-AC conversion module. As another example, if the input of the input branch is AC and the busbar is DC, the voltage conversion module can be an AC-DC conversion module.

[0041] In one embodiment of this application, each output branch LO includes an output switch K0, which controls the conduction or disconnection of the output branch LO to output or not output electrical energy to the electrical equipment corresponding to the output branch LO.

[0042] In the scheme of this application, each input switch, output switch and bypass switch can be a relay or other switching device.

[0043] The power distribution equipment may also include a main control module (not shown in the figure), which is electrically connected to each input switch, bypass switch, and voltage conversion module, and is configured to execute the power supply control method provided in this application.

[0044] Figure 2 The flowchart of a power supply control method according to an embodiment of this application is illustrated schematically. This power supply control method can be applied to the power distribution equipment provided in any embodiment of this application, for example, it can be applied to... Figure 1 The power distribution equipment shown.

[0045] like Figure 2 As shown, the power supply control method provided in this application embodiment includes steps S210 to S230, as detailed below:

[0046] Step S210: When receiving the input source switching command, obtain the bus voltage on the bus.

[0047] Specifically, the input source switching instruction is used to select at least one input branch from multiple input branches as the target input branch, which is an input branch other than the current input branch that is currently providing power input.

[0048] by Figure 1Taking the illustrated embodiment as an example, exemplarily, if at the current moment, input switch KI1 of input branch LI1 is closed and input switch KI2 of input branch LI2 is open, the current input branch is input branch LI1. The input source switching instruction selects an input branch other than input branch LI1, such as input branch LI2, as the target input branch. If at the current moment, input switch KI2 of input branch LI2 is closed and input switch KI1 of input branch LI1 is open, the current input branch is input branch LI2. The input source switching instruction selects an input branch other than input branch LI2, such as input branch LI1, as the target input branch.

[0049] In embodiments where the power distribution equipment includes three or more input branches, such as Figure 3 As shown, LI1, LI2, and LI3 each represent an input branch. For example, if at the current moment, input switch KI1 of input branch LI1 is closed, and input switches KI2 and KI3 of input branches LI2 and LI3 are open, then the current input branch is input branch LI1. The input source switching instruction can select an input branch other than input branch LI1, such as input branch LI2 as the target input branch, or input branch LI3 as the target input branch, or it can select both input branches LI2 and LI3 as the target input branches.

[0050] It should be noted that bus voltage refers to the voltage on the common line of the power distribution equipment, and all electrical energy output to the power-consuming equipment must pass through this common line.

[0051] Step S220: Determine whether the bus voltage is greater than a preset threshold. If the bus voltage is greater than the preset threshold, proceed to step S230a; otherwise, proceed to step S230b.

[0052] The preset threshold is a voltage value set according to the actual situation, such as 385V.

[0053] Step S230a: Based on the input source switching instruction, control the input switch of the current input branch to be turned off, and control the input switch and bypass switch of the target input branch to be turned on.

[0054] In step S230b, the bypass switch of the current input branch is opened, and the voltage conversion module is controlled to boost the input voltage of the current input branch.

[0055] When the bus voltage is less than a preset threshold, the control voltage conversion module boosts the input voltage of the current input branch to increase the bus voltage, so that the bus voltage reaches or exceeds the preset threshold. Then, return to step S220 to determine whether the boosted bus voltage is greater than the preset threshold. If the bus voltage is greater than the preset threshold, then execute step S230a.

[0056] In one example, the voltage conversion module is used to boost the input voltage before outputting it. In step S230b, the voltage conversion module is controlled to boost the input voltage of the current input branch. Of course, the voltage conversion module can also have both boost and buck functions. In step S230b, the boost function of the voltage conversion module is used to boost the input voltage of the current input branch, while the buck function is used when the bus requires a low voltage, for example, when the electrical equipment requires a low voltage and the input of the input branch requires a high voltage, the input voltage of the input branch is reduced.

[0057] In one example, further, if the bus voltage is still less than a preset threshold after a preset time has elapsed in step S230b, then the input source switching command will no longer be responded to; that is, step S230a will no longer be executed, and the current input branch will continue to provide power. Figure 3 Taking the power distribution equipment shown as an example, let's say the current input branch is input branch LI1, and input branch LI3 is the target input branch. If, after a preset time in step S230b, the bus voltage is still less than a preset threshold, then the input switch KI1 of input branch LI1 will not be opened, nor will the input switch KI3 and bypass switch D3 of input branch LI3 be closed. That is, the input of the power distribution equipment will no longer be switched to input branch LI3, and input branch LI1 will remain as the input of the power distribution equipment.

[0058] In summary, the power distribution equipment of this application includes multiple input branches and a busbar. The input branches are connected to the busbar, and each input branch is used to connect to a corresponding power supply. Each input branch includes at least one input switch and one voltage conversion module, with a bypass switch connected in parallel to the voltage conversion module. The power supply control method provided in this application, applied to this power distribution equipment, first obtains the busbar voltage when receiving an input source switching command. When the busbar voltage is greater than a preset threshold, it controls the input switch of the current input branch to open according to the input source switching command, and controls the input switch and bypass switch of the target input branch to close. When the busbar voltage is less than the preset threshold, it controls the bypass switch of the current input branch to open, and controls the voltage conversion module to boost the input voltage of the current input branch to increase the busbar voltage. When the busbar voltage is greater than the preset threshold, it controls the input switch of the current input branch to open according to the input source switching command, and controls the input switch and bypass switch of the target input branch to close. The solution proposed in this application allows power distribution equipment to switch input sources. If the bus voltage is lower than a preset threshold, the voltage conversion module can be used to boost the input voltage of the current input branch before switching. This ensures that the bus voltage on the power distribution equipment remains above the preset threshold during input source switching, preventing sudden power loss during power supply changes, ensuring normal load operation, and improving user experience.

[0059] In one embodiment of this application, such as Figure 4 As shown, the power distribution equipment includes two input branches: a DC input branch LI2 and an AC input branch LI1. The DC input branch LI2 is connected to a DC power supply 22, and the AC input branch LI1 is connected to an AC power supply 21. The bus can be an AC bus; correspondingly, the voltage conversion module 12 of the DC input branch LI2 and the voltage conversion module 11 of the AC input branch LI1 are both AC-AC conversion modules. An inverter module 32 is installed on the DC input branch LI2. The first end of the inverter module 32 is connected to the DC power supply 22, and the second end of the inverter module 32 is connected to the AC-AC conversion module 12. The inverter module 32 can convert the DC power output from the DC power supply 22 into AC power.

[0060] The power supply control method of this application is applied to this application. Figure 4 When the power distribution equipment shown is connected, the power supply control method further includes: when the DC input branch is connected to the AC bus, controlling the inverter module to convert the DC power input into AC power and then inputting it into the DC input branch.

[0061] In other words, when the received input source switching command selects the DC input branch as the target input branch, the inverter module converts the DC power input into AC power when the input switch of the DC input branch is closed. This ensures that the electrical signal input to the AC bus is an AC signal, allowing the AC bus to transmit the signal more effectively.

[0062] Specifically, when the bus voltage is greater than a preset threshold, the inverter module 32 converts the DC power input from the DC power supply 22 into AC power, and then directly inputs it to the DC input branch LI2 through the bypass switch D2. When the bus voltage is less than the preset threshold, the inverter module 32 converts the DC power input from the DC power supply 22 into AC power, then boosts it through the AC-AC conversion module 12 before inputting it to the DC input branch LI2.

[0063] It should be noted that, Figure 4 The power distribution equipment shown includes a DC input branch and an AC input branch, which is only an exemplary embodiment of this application. In other embodiments, the power distribution equipment may include two or more DC input branches and an AC input branch, or it may include a DC input branch and two or more AC input branches, or it may include two or more DC input branches and two or more AC input branches.

[0064] For example, the power distribution equipment includes two DC input branches and one AC input branch. When the received input source switching command selects a specific DC input branch as the target input branch, the inverter module of that specific DC input branch converts the DC power input into AC power when the input switch of that specific DC input branch is closed. When the received input source switching command selects two DC input branches as target input branches, the inverter modules of the two DC input branches convert the DC power input into AC power respectively when the input switches of the two DC input branches are closed.

[0065] The solution presented in this application enables power distribution equipment to boost the input voltage, whether connected to an AC or DC bus, thus improving the applicability of the power distribution equipment. It also prevents sudden power loss during power supply switching, ensuring normal load operation and enhancing the user experience.

[0066] In an alternative approach, this application may omit the AC-AC conversion module 12 and directly perform voltage boosting and / or bucking via the inverter module 32. That is, it simultaneously utilizes the inverter module 32's ability to convert DC to AC and its voltage conversion function. This simplifies the structure of the power distribution equipment and reduces equipment costs.

[0067] In one embodiment of this application, such as Figure 5 As shown, the power distribution equipment includes two input branches: a DC input branch LI2 and an AC input branch LI1. The DC input branch LI2 is connected to a DC power supply 22, and the AC input branch LI1 is connected to an AC power supply 21. The bus is a DC bus, and a bus capacitor is connected to it. Correspondingly, the voltage conversion module 12 of the DC input branch LI2 and the voltage conversion module 11 of the AC input branch LI1 are both DC-DC conversion modules. A rectifier module 31 is installed on the AC input branch LI1. The first end of the rectifier module 31 is connected to the AC power supply 21, and the second end is connected to the DC-DC conversion module 11. The rectifier module 31 converts the AC power output from the AC power supply 21 into DC power.

[0068] The power supply control method of this application is applied to this application. Figure 5 When the power distribution equipment shown is connected to the DC bus, the power supply control method further includes: when the AC input branch is connected to the DC bus, the control rectifier module converts the AC power input into DC power and inputs it into the AC input branch.

[0069] In other words, when the received input source switching command selects the AC input branch as the target input branch, the rectifier module converts the AC power input into DC power when the input switch of the AC input branch is closed. This ensures that the electrical signal input to the DC bus is a DC signal, allowing the DC bus to transmit the signal more effectively.

[0070] Specifically, when the bus voltage is greater than a preset threshold, the rectifier module 31 converts the AC power output from the AC power supply 21 into DC power, which is then directly input to the AC input branch LI1 via the bypass switch D1. When the bus voltage is less than the preset threshold, the rectifier module 31 converts the AC power output from the AC power supply 21 into DC power, which is then boosted by the DC-DC converter module 11 before being input to the AC input branch LI1.

[0071] It should be noted that, Figure 5 The power distribution equipment shown includes a DC input branch and an AC input branch, which is only an exemplary embodiment of this application. In other embodiments, the power distribution equipment may include two or more DC input branches and an AC input branch, or it may include a DC input branch and two or more AC input branches, or it may include two or more DC input branches and two or more AC input branches.

[0072] For example, the power distribution equipment includes one DC input branch and two AC input branches. When the received input source switching command selects one AC input branch as the target input branch, the rectifier module of that AC input branch is controlled to convert the AC power input into DC power when the input switch of that AC input branch is closed. When the received input source switching command selects two AC input branches as target input branches, the rectifier modules of the two AC input branches are controlled to convert the AC power input into DC power when the input switches of those two AC input branches are closed.

[0073] In an alternative approach, the power distribution equipment may omit the DC-DC conversion module 11 and instead use a rectifier module 31 for voltage boosting and / or bucking. That is, the rectifier module 31's ability to convert AC to DC and its voltage conversion function are utilized simultaneously. This simplifies the structure of the power distribution equipment and reduces equipment costs.

[0074] In one embodiment of this application, the DC power supply 22 is a rechargeable power supply, such as an energy storage device.

[0075] In one example, the power supply control method of this application is applied when the DC power supply 22 is a power distribution device for an energy storage device, such as... Figure 5 The power distribution equipment shown further includes the following power supply control method: if the current input branch is an AC input branch, determine whether there is any electrical equipment connected to the output branch; if no electrical equipment is connected to the output branch, control the input switch on the DC input branch to close. At this time, the energy storage device is charged through the current input branch, i.e., the AC power supply.

[0076] In this embodiment, when no electrical equipment is connected to the output branch, the input switch on the DC input branch is closed to charge the energy storage device via AC power. This achieves the supply of power to the rechargeable power source while avoiding interference with the normal power supply to the electrical equipment from the output branch, thus ensuring the normal operation of the electrical equipment.

[0077] In one example, the power supply control method of this application is applied when the DC power supply 22 is a power distribution device for an energy storage device, such as... Figure 5 The power distribution equipment shown further includes a power supply control method that, if the current input branch is an AC input branch, controls the input switch on the DC input branch to close. At this time, the energy storage device is charged via AC power. Since the AC power is AC mains power, and the output voltage of AC mains power can reach a relatively high level, even if an electrical device is connected to the output branch, the AC input branch can provide sufficient voltage to charge the energy storage device. Therefore, in this embodiment, it is no longer necessary to pre-determine whether an electrical device is connected to the output branch; the energy storage device can be charged directly.

[0078] In one embodiment of this application, such as Figure 6 As shown, the power distribution equipment includes two DC input branches. One DC input branch LI1 is connected to a DC power supply 21, and the other DC input branch LI2 is connected to an energy storage device 22. For ease of description, the DC input branch LI1 connected to the DC power supply 21 will be referred to as the first DC input branch, and the DC input branch LI2 connected to the energy storage device 22 will be referred to as the second DC input branch.

[0079] In one example, the power supply control method of this application is applied to this application. Figure 6 When the power distribution equipment is shown, the power supply control method further includes:

[0080] If the current input branch is the first DC input branch, determine whether there is any electrical equipment connected to the output branch. If there is no electrical equipment connected to the output branch, control the input switch on the second DC input branch to close. At this time, the energy storage device is charged through DC power supply.

[0081] In this embodiment, when no electrical equipment is connected to the output branch, the input switch on the second DC input branch is closed to charge the energy storage device via DC power. This achieves the supply of power to a rechargeable power source while avoiding interference with the normal power supply from the output branch to the electrical equipment, thus ensuring the normal operation of the electrical equipment.

[0082] It should be noted that when charging the energy storage device through the current input branch, the bypass switch of the DC input branch corresponding to the energy storage device can be closed. In this case, the electrical energy output from the current input branch charges the energy storage device after passing through the bypass switch. Alternatively, the bypass switch of the DC input branch corresponding to the energy storage device can be open. In this case, the electrical energy output from the current input branch charges the energy storage device after passing through the voltage conversion module. The voltage conversion module can boost or buck the electrical energy output from the previous input branch before charging the energy storage device. Simultaneously, the inverter module on the DC input branch corresponding to the energy storage device does not operate.

[0083] It should be noted that energy storage devices can be, for example, battery packs. DC power sources can be energy storage devices or devices capable of generating DC power, such as DC generators.

[0084] In one example, the power distribution equipment also includes two DC input branches. The first DC input branch is connected to a solar photovoltaic panel, and the second DC input branch is connected to an energy storage device. When the power supply control method is applied to this power distribution equipment, the method further includes: if the current input branch is the first DC input branch, determining whether there is a device connected to the output branch; if there is a device connected to the output branch, obtaining the input power of the solar photovoltaic panel and the power demand of the device; if the input power of the solar photovoltaic panel is greater than the power demand of the device, then controlling the input switch on the second DC input branch to close. At this time, the remaining solar energy is used to charge the energy storage device, achieving full utilization of energy.

[0085] Furthermore, in one embodiment of this application, the current input branch is an AC input branch / DC input branch. Before closing the input switch on the DC input branch to charge the energy storage device, the power supply control method further includes an energy storage device power level determination step. Specifically, the energy storage device power level determination step includes: obtaining the remaining power of the energy storage device; if the remaining power is less than or equal to a power threshold, then closing the DC input switch corresponding to the energy storage device. That is, charging the energy storage device when its power level is below the power threshold. If the remaining power is greater than the power threshold, then opening the DC input switch corresponding to the energy storage device, that is, not charging the energy storage device. In this case, the DC input switch remains open to avoid frequent opening and closing of the DC input switch or affecting the power supply to the electrical equipment.

[0086] Furthermore, in embodiments where the DC power supply charges the energy storage device, if the DC power supply is also an energy storage device, such as a larger capacity energy storage device, the power supply control method further includes a DC power supply level determination step before closing the input switch on the second DC input branch to charge the energy storage device. Specifically, the DC power supply level determination step includes: obtaining the remaining power of the DC power supply; if the remaining power is less than or equal to a power threshold, then opening the DC input switch on the second DC input branch, i.e., not charging the energy storage device; if the remaining power is greater than the power threshold, then closing the DC input switch on the second DC input branch, i.e., charging the energy storage device. This avoids causing a DC power supply shortage.

[0087] In addition, in an embodiment where the energy storage device is charged via a DC power supply, if the DC power supply is a DC generator, the power supply control method further includes a DC generator power determination step before closing the input switch on the second DC input branch to charge the energy storage device. Specifically, the DC generator power determination step includes: obtaining the output power of the DC generator; if the output power is less than or equal to a preset threshold, then opening the DC input switch on the second DC input branch, i.e., not charging the energy storage device; if the output power is greater than the preset threshold, then closing the DC input switch on the second DC input branch, i.e., charging the energy storage device. This avoids the DC power supply being unable to provide sufficient power to the electrical equipment.

[0088] Figure 7 The flowchart of a power supply control method according to an embodiment of this application is illustrated schematically. This power supply control method can be applied to power distribution equipment provided in any embodiment of this application, such as... Figure 1 , Figures 3 to 6 The power distribution equipment shown.

[0089] like Figure 7 As shown, the power supply control method provided in this application embodiment includes steps S710 to S750, as detailed below:

[0090] Step S710: Upon receiving the input source switching instruction, obtain the device information of the currently connected electrical equipment on the output branch.

[0091] Step S720: Determine whether the current electrical device is a sensitive device based on the device information. If the current electrical device is not a sensitive device, proceed directly to step S750; if the current electrical device is a sensitive device, proceed to step S730.

[0092] In one example, step S720 specifically includes: obtaining the switching limit parameters of the current power device that allow the input source to switch from the device information; if the switching limit parameters are less than or equal to a first preset duration, the current power device is a sensitive device; if the switching limit parameters are greater than the first preset duration, the current power device is not a sensitive device. Specifically, a sensitive device is a power device that will experience a power outage when the input source switching time interval is less than or equal to the first preset duration. For example, the first preset duration is 35 milliseconds, meaning that a power outage event will occur when the input source switching time interval is 35 milliseconds or less, and is considered a sensitive device. A power outage event will occur only when the input source switching time interval exceeds 35 milliseconds, and is considered a non-sensitive device. Using the time when the power outage occurs during switching as a condition to determine whether a power device is a sensitive device offers high reliability.

[0093] It should be noted that the equipment information can be the name, serial number, etc. of the electrical equipment. By pre-establishing a mapping relationship between equipment information and switching limit parameters, after obtaining the equipment information, the switching limit parameters of the current electrical equipment can be determined based on this mapping relationship. Then, based on the relationship between the switching limit parameters and a first preset duration, it can be determined whether the current electrical equipment is a sensitive device.

[0094] Equipment information can also include various information about the electrical equipment, such as name, number, switching limit parameters, etc.

[0095] In one example, multiple output branches are connected to electrical devices, meaning the current electrical device includes multiple electrical devices. In step S720, if it is determined that any electrical device connected to any output branch is a sensitive device, then the current electrical device is considered a sensitive device. Only if none of the electrical devices connected to any output branch are sensitive devices is the current electrical device considered not to be a sensitive device.

[0096] Step S730: Obtain the bus voltage on the bus and determine whether the bus voltage is greater than a preset threshold. If the bus voltage is greater than the preset threshold, proceed to step S750; otherwise, proceed to step S740.

[0097] In step S740, the bypass switch of the current input branch is opened, and the voltage conversion module is controlled to boost the input voltage of the current input branch. Then, the process returns to step S730 to determine whether the boosted bus voltage is greater than a preset threshold. If the bus voltage is greater than the preset threshold, step S750 is executed.

[0098] Step S750: Based on the input source switching instruction, control the input switch of the current input branch to open, and control the input switch and bypass switch of the target input branch to close.

[0099] exist Figure 7 In the illustrated embodiment, it is first determined whether the electrical equipment connected to the output branch is sensitive to input source switching. If the electrical equipment is not sensitive to input source switching, the input source is switched directly according to the input source switching command, reducing unnecessary subsequent processing and calculation processes and improving the input source switching efficiency. If the electrical equipment is sensitive to input source switching, the bus voltage is further obtained. Only when the bus voltage reaches or exceeds a preset threshold is the input source switched according to the input source switching command. This can prevent the electrical equipment from suddenly losing power during input source switching, ensuring the normal use of the electrical equipment during input source switching and improving the user experience.

[0100] Figure 8 The flowchart of a power supply control method provided in one embodiment of this application is illustrated schematically. Figure 7 The difference between the illustrated embodiment and the one shown is that, in Figure 8In the embodiment shown, the power supply control method further includes a power equipment access determination step.

[0101] like Figure 8 As shown, the power supply control method provided in this application embodiment includes steps S810 to S860, as detailed below:

[0102] Step S810: Upon receiving the input source switching command, confirm whether there is any electrical equipment connected to the output branch. If there is no electrical equipment connected to the output branch, proceed directly to step S860; if there is electrical equipment connected to the output branch, proceed to step S820.

[0103] Step S820: Obtain the device information of the currently connected electrical equipment on the output branch, and determine whether the currently connected electrical equipment is a sensitive device based on the device information. If the currently connected electrical equipment is not a sensitive device, proceed to step S850; if the currently connected electrical equipment is a sensitive device, proceed to step S830.

[0104] Step S830: Obtain the bus voltage on the bus and determine whether the bus voltage is greater than a preset threshold. If the bus voltage is greater than the preset threshold, proceed directly to step S850; otherwise, proceed to step S840.

[0105] In step S840, the bypass switch of the current input branch is opened, and the voltage conversion module is controlled to boost the input voltage of the current input branch. Then, the process returns to step S830 to determine whether the boosted bus voltage is greater than a preset threshold. If the bus voltage is greater than the preset threshold, step S850 is executed.

[0106] In step S850, the input switch of the current input branch is opened based on the input source switching instruction, and the input switch and bypass switch of the target input branch are closed.

[0107] Step S860: Control the input switch of the current input branch to disconnect.

[0108] exist Figure 8In the illustrated embodiment, it is first confirmed whether any electrical equipment is connected to the output branch. If no electrical equipment is connected, the current input branch is directly disconnected according to the input source switching command, reducing unnecessary subsequent processing and calculations and improving the efficiency of the input source switching command execution. If electrical equipment is connected, it is further determined whether the connected electrical equipment is sensitive to input source switching. If the electrical equipment is not sensitive to input source switching, the input source is switched directly according to the input source switching command, reducing unnecessary subsequent processing and calculations and improving the efficiency of input source switching. If the electrical equipment is sensitive to input source switching, the bus voltage is further obtained. Only when the bus voltage reaches or exceeds a preset threshold is the input source switched according to the input source switching command. This can prevent the electrical equipment from suddenly losing power during input source switching, ensuring the normal use of the electrical equipment during input source switching and improving the user experience.

[0109] It should be noted that in some embodiments, if it is confirmed that no electrical equipment is connected to the output branch, the input switch of the current input branch can be opened according to the input source switching command, and the input switch and bypass switch of the target input branch can be closed.

[0110] The power supply control method of this application will be described below based on a specific application process of the technical solution of this application.

[0111] like Figure 9 As shown in (a), at the current moment, input switch KI1 of input branch LI1 is closed, and input switch KI2 of input branch LI2 is open, providing power to output branch LO through input branch LI1. Upon receiving an input source switching command, the system first identifies output branches with closed output switches, such as output switch KO1 of output branch LO1. Next, it further determines whether the household electrical load connected to output branch LO1 is a sensitive device. If the household electrical load is not a sensitive device, the system directly controls input switch KI1 of input branch LI1 to open and controls input switch KI2 and bypass switch D2 of input branch LI2 to close. Figure 9 As shown in (b). If the household electrical load is a sensitive device, the bus voltage is further acquired, and it is determined whether the bus voltage is greater than a preset threshold. If the bus voltage is greater than the preset threshold, the input switch KI1 of input branch LI1 is directly opened, and the input switch KI2 and bypass switch D2 of input branch L2 are closed. If the bus voltage is less than the preset threshold, the bypass switch D1 of input branch LI1 is first opened, and the input voltage of input branch LI1 is boosted using the voltage conversion module 11, thereby increasing the bus voltage. After the bus voltage reaches or exceeds the preset threshold, the input switch KI1 of input branch LI1 is opened, and the input switch KI2 and bypass switch D2 of input branch L2 are closed. Figure 9 As shown in (b).

[0112] The above is based on Figure 1 Taking the corresponding power distribution equipment as an example of switching, when receiving the input source switching command, if the household electrical load corresponding to the output branch LO1 is a sensitive device, the bus voltage is further obtained. If the bus voltage is less than a preset threshold, the bypass switch D1 of the input branch LI1 is opened, and the input voltage of the input branch LI1 is boosted by the voltage conversion module 11 to increase the bus voltage. When the bus voltage is greater than the preset threshold, the input switch KI1 of the input branch LI1 is opened based on the input source switching command, and the input switch KI2 and bypass switch D2 of the input branch L2 are closed. This can prevent the household electrical load corresponding to the output branch LO1 from suddenly losing power when the power supply is switched, ensuring the normal use of the household electrical load when the power supply is switched, and improving the user experience.

[0113] This application also provides a power distribution device, which can be any of the types listed in the above embodiments. The switching scenarios for each type of power distribution device will not be described in detail here. Similarly, the voltage conversion module can be any of the types listed in the above embodiments, configured accordingly based on the relevant structure of the power distribution device. The power distribution device of this application can prevent sudden power loss of the load during power supply switching, ensuring normal load operation during power supply switching and improving user experience.

[0114] The following is for reference. Figure 10 The present application describes the power distribution equipment according to its embodiments. Figure 10 A schematic diagram illustrating the computer system architecture of a power distribution device according to an embodiment of this application is provided. It will be understood that... Figure 10 The computer system shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0115] like Figure 10 As shown, the computer system of the power distribution equipment may include, but is not limited to: at least one processing unit 510, at least one storage unit 520, and a bus 530 connecting different system components (including storage unit 520 and processing unit 510).

[0116] The storage unit stores program code, which can be executed by the processing unit 510 to perform the steps described in the explanatory section of this specification for various exemplary embodiments of the present invention. For example, the processing unit 510 can perform actions such as... Figure 2 , Figure 8 and Figure 9 The steps shown are as follows.

[0117] Storage unit 520 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 5201 and / or cache memory 5202, and may further include a read-only memory (ROM) 5203.

[0118] Storage unit 520 may also include a program / utility 5204 having a set (at least one) program module 5205, such program module 5205 including but not limited to: operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0119] Bus 530 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0120] The power distribution equipment can also communicate with one or more external devices 600 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable users to interact with the power distribution equipment, and / or any device that enables the power distribution equipment to communicate with one or more other computing devices (e.g., routers, modems, etc.). This communication can be performed via an input / output (I / O) interface 550. The I / O interface 550 is connected to a display unit 540, which can display the work progress obtained by the method of the present invention, so that on-site personnel can obtain the work progress of the power distribution equipment in real time. Furthermore, the power distribution equipment can also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 560. Figure 10 As shown, the network adapter 560 communicates with other modules of the power distribution equipment via the bus 530.

[0121] It should be understood that, despite Figure 10 As not shown, other hardware and / or software modules can be used in conjunction with power distribution equipment, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0122] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a power distribution device to execute the method according to the embodiments of this application.

[0123] In an exemplary embodiment of this application, a computer-readable storage medium is also provided, on which computer-readable instructions are stored, which, when executed by a computer's processor, cause the computer to perform the methods described in the above method embodiments.

[0124] According to one embodiment of this application, a program product for implementing the methods in the above-described method embodiments is also provided. This product may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of this invention is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0125] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CDROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0126] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0127] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0128] Program code for performing the operations of this invention can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0129] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0130] Furthermore, although the steps of the method in this application are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0131] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a power distribution device to execute the method according to the embodiments of this application.

[0132] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A power supply control method, characterized in that, The method is applied to power distribution equipment, which includes multiple input branches and a busbar. Each input branch is connected to a corresponding power supply. Each input branch includes at least one input switch and a voltage conversion module. A bypass switch is connected in parallel with the voltage conversion module. The power supply control method includes: Upon receiving an input source switching instruction, the bus voltage on the bus is obtained. The input source switching instruction is used to select at least one input branch from the plurality of input branches as the target input branch. When the bus voltage is greater than a preset threshold, the input switch of the current input branch is opened based on the input source switching command, and the input switch and bypass switch of the target input branch are closed. When the bus voltage is less than the preset threshold, the bypass switch of the current input branch is opened, and the voltage conversion module is controlled to boost the input voltage of the current input branch to increase the bus voltage. When the bus voltage is greater than the preset threshold, the input switch of the current input branch is opened based on the input source switching command, and the input switch and bypass switch of the target input branch are closed.

2. The power supply control method according to claim 1, characterized in that, The power distribution equipment further includes multiple output branches connected to the busbar. These output branches are used to connect electrical equipment. Before obtaining the busbar voltage, the power supply control method further includes: Obtain the device information of the currently connected electrical equipment on the output branch; Based on the device information, it is determined whether the current electrical device is a sensitive device. The sensitive device is an electrical device that will experience a power failure event when the switching time interval of the input source is less than or equal to a first preset time. If the current electrical equipment is not a sensitive device, the input switch of the current input branch is opened based on the input source switching command, and the input switch and bypass switch of the target input branch are closed. If the current electrical equipment is a sensitive device, then the step of obtaining the bus voltage on the bus is performed.

3. The power supply control method according to claim 2, characterized in that, The step of determining whether the currently used electrical equipment is a sensitive device based on the device information includes: Obtain the switching limit parameters for the current electrical equipment to switch input sources from the device information; If the switching limit parameter is less than or equal to the first preset duration, then the current electrical equipment is a sensitive device; If the switching limit parameter is greater than the first preset duration, then the current electrical device is not a sensitive device.

4. The power supply control method according to claim 2, characterized in that, Before acquiring the device information of the currently connected electrical equipment on the output branch, the power supply control method further includes: Confirm whether any electrical equipment is connected to the output branch; If no electrical equipment is connected to the output branch, the input switch of the current input branch is disconnected. If an electrical device is connected to the output branch, then the step of obtaining the device information of the currently connected electrical device on the output branch is executed.

5. The power supply control method according to claim 1, characterized in that, The busbar is an AC busbar, the voltage conversion module is an AC-AC conversion module, the power supply includes at least one DC power supply, wherein the input branch connected to the DC power supply among the plurality of input branches is a DC input branch, and an inverter module is provided on the DC input branch. The power supply control method further includes: When the DC input branch is connected to the AC bus, the inverter module is controlled to convert the DC power input from the DC power source into AC power and then input it into the DC input branch.

6. The power supply control method according to claim 1, characterized in that, The bus is a DC bus, and a bus capacitor is connected to the DC bus. The voltage conversion module is a DC-DC conversion module. The power supply includes at least one AC power supply. The input branch connected to the AC power supply among the plurality of input branches is an AC input branch, and a rectifier module is provided on the AC input branch. The power supply control method further includes: When the AC input branch is connected to the DC bus, the rectifier module is controlled to convert the AC power input from the AC power source into DC power and then input it into the AC input branch.

7. The power supply control method according to claim 1, characterized in that, The power distribution equipment further includes multiple output branches connected to the busbar. These output branches are used to connect electrical equipment. The multiple input branches include at least one DC input branch and at least one AC input branch. The DC input branch is used to connect to an energy storage device, and the AC input branch is used to connect to an AC power source. The input switch corresponding to the DC input branch is a DC input switch, and the input switch corresponding to the AC input branch is an AC input switch. The power supply control method further includes: Determine whether any electrical equipment is connected to the output branch; If no electrical equipment is connected to the output branch, and the current input branch is the AC input branch, then the DC input switch is closed to enable the AC power supply to charge the energy storage device.

8. The power supply control method according to claim 7, characterized in that, Before the control of closing the DC input switch, the power supply control method further includes: Obtain the remaining power of the energy storage device; If the remaining power is less than or equal to the power threshold, then control the DC input switch to close; If the remaining power is greater than the power threshold, then the DC input switch is turned off.

9. A power distribution device, characterized in that, The system includes multiple input branches, a bus, and a main control module. The input branches are connected to the bus, and each input branch is used to connect to a corresponding power supply. Each input branch includes at least one input switch and a voltage conversion module. The voltage conversion module is connected in parallel with a bypass switch. The main control module is electrically connected to each input switch and the bypass switch and is configured to perform the power supply control method as described in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-readable instructions that, when executed by a computer's processor, cause the computer to perform the power supply control method as described in any one of claims 1 to 8.

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