WO2022051990A1 - 供电方法、装置、电子设备和可读存储介质 - Google Patents

供电方法、装置、电子设备和可读存储介质 Download PDF

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Publication number
WO2022051990A1
WO2022051990A1 PCT/CN2020/114533 CN2020114533W WO2022051990A1 WO 2022051990 A1 WO2022051990 A1 WO 2022051990A1 CN 2020114533 W CN2020114533 W CN 2020114533W WO 2022051990 A1 WO2022051990 A1 WO 2022051990A1
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WIPO (PCT)
Prior art keywords
current value
power supply
supply system
power
input voltage
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PCT/CN2020/114533
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English (en)
French (fr)
Inventor
陈保国
陈潘
余华
易立琼
Original Assignee
华为数字能源技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为数字能源技术有限公司 filed Critical 华为数字能源技术有限公司
Priority to EP20952778.7A priority Critical patent/EP4191855A4/en
Priority to PCT/CN2020/114533 priority patent/WO2022051990A1/zh
Priority to CN202080097745.8A priority patent/CN115211011A/zh
Publication of WO2022051990A1 publication Critical patent/WO2022051990A1/zh
Priority to US18/180,844 priority patent/US20230223753A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • H02J3/00125—Transmission line or load transient problems, e.g. overvoltage, resonance or self-excitation of inductive loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • H02J3/0012—Contingency detection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/12—The local stationary network supplying a household or a building
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2310/52—The controlling of the operation of the load not being the total disconnection of the load, i.e. entering a degraded mode or in current limitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a power supply method, an apparatus, an electronic device, and a readable storage medium.
  • the power system is an important part of the communication system, which is used to supply the electrical energy in the power grid to the load.
  • Some power systems may be deployed in scenarios such as mountainous areas and highways to supply power to loads such as remote radio units (RRUs) set in these scenarios.
  • RRUs remote radio units
  • the power system is far away from the power transformer.
  • the impedance of the transmission cable between the power transformer and the power system will be abnormally large.
  • the voltage drop of the power transmission cable will be too large, which may cause the power system to have input Undervoltage and repeated restarts, which in turn cause loads such as RRUs to fail to work properly.
  • the methods of the prior art forcibly limit the power supply capability of the power supply system, and in the case of a heavy load, the load may be powered down due to insufficient power supply.
  • Embodiments of the present application provide a power supply method, device, electronic device, and readable storage medium.
  • the power supply system can adaptively adjust the current limit value of the power supply system according to the input voltage, so that the power supply can be provided for the load while avoiding the power supply.
  • the system is under voltage.
  • an embodiment of the present application provides a power supply method, which can be applied to a power supply system, or a chip in a power supply system, or a rectifier in a power supply system, or a chip in a rectifier.
  • the method is described below by taking an application to a rectifier as an example.
  • the power supply system supplies power to the load through an external power grid.
  • the rectifier can determine whether the current power grid is a weak power grid, and if the current power grid is a weak power grid, it can determine a target limited current value according to the actual input voltage of the power supply system, and then supply power to the load based on the target limited current value.
  • the rectifier can adaptively adjust the limited current value of the power supply system according to the input voltage, thereby preventing undervoltage in the power supply system while providing power for the load.
  • the limited current value of the power system can be adjusted to a value commonly used by the power system, so that the power system can charge the load and charge the battery in the power system.
  • the limit current value of the power supply system can be adjusted to a lower value, so that the power supply system can output a small output current to ensure that the load can be provided with power At the same time, avoid undervoltage in the power system.
  • the method for judging whether the current power grid is a weak power grid by the rectifier may be: if the number of times that the power system is in an undervoltage state within a preset time period is greater than or equal to a preset number of times, then determine the current The grid is weak grid. Because the voltage output by the power grid varies, the bus voltage of the power system and the actual input voltage of the power system can be changed. Therefore, in the embodiment of the present application, if the power system is in an undervoltage state at one time, it may not be possible to determine that the current power grid is a weak power grid. precise.
  • the number of times the power supply system is in an undervoltage state within a preset time period is used to judge whether the current power grid is a weak power grid.
  • the rectifier may determine whether the power system is in an undervoltage state according to at least one of the bus voltage and the actual input voltage of the power system.
  • the bus voltage is less than or equal to a first undervoltage threshold, and/or the actual input voltage is less than or equal to a second undervoltage threshold, it is determined that the power system is in an undervoltage state.
  • the rectifier can determine the target limit current value according to the actual input voltage of the power system.
  • the process may be: adjusting the limited current value of the power supply system to a first limited current value; obtaining the sum of the first limited current value and a preset adjustment limited current value, and adjusting the first limited current value to the first limited current value
  • the sum of the preset adjustment limited current values is used as the second limited current value; the target limited current value is determined according to the actual input voltage when the power supply system operates at the second limited current value.
  • the first limited current value may be predefined, which is the lowest limited current value supported by the power supply system.
  • a preset adjustment limit current value may be preset, and the preset adjustment limit current value is a value of the limit current value that the rectifier increases or decreases on the basis of the adjusted current limit value of the power supply system.
  • the rectifier may determine whether to readjust the second limiting current value of the power supply system according to the actual input voltage of the power supply system. If the actual input voltage of the power system operating at the second limiting current value is greater than the first voltage threshold, the rectifier may determine that the second limiting current value is smaller, and may adjust the second limiting current value to a larger value.
  • the first voltage threshold may be the upper limit (or upper boundary) of the preset range of the actual input voltage.
  • the rectifier may determine the sum of the second limited current value and the preset adjustment limited current value, and use the sum of the second limited current value and the preset adjusted limited current value as the third limited current value, and then use the power system The limiting current value is adjusted to the third limiting current value.
  • the difference between the second limiting current value and the preset adjustment limiting current value is determined, and the The difference between the second limiting current value and the preset adjustment limiting current value is used as the third limiting current value, and the second voltage threshold value is smaller than the first voltage threshold value. If the actual input voltage of the power system operating at the second limiting current value or the third limiting current value is greater than or equal to the second voltage threshold, and is less than or equal to the first voltage threshold, the second limiting The current value or the third limited current value is used as the target limited current value.
  • the rectifier may use an iterative manner to determine the target limited current value according to the actual input voltage of the power system operating at the second limited current value, and the specific steps may be as follows:
  • the rectifier can dynamically adjust the limited current value of the power supply system according to the actual input voltage, and then adjust the limited current value to the target limited current value.
  • This method is more suitable for actual application scenarios and fully based on real-time actual conditions.
  • the input voltage charges the load, maximizing the utilization of the grid and improving charging efficiency.
  • a battery may be included in the power supply system.
  • the range of the limited current value that can be adjusted by the power supply system is very limited. Therefore, in order to ensure the accuracy of the limited current value adjusted by the power supply system in the embodiment of the present application, the actual When the input voltage is within a suitable voltage range, the increase or decrease of the limiting current value of the rectifier to the power supply system will not cause undervoltage in the power supply system, and the limiting current value of the power supply system can also be adjusted to the target limiting current value.
  • This method can improve the stability of the power supply system and increase the stability of the power supply method.
  • the power supply system before determining the target limiting current according to the actual input voltage of the power supply system, it may be further determined whether the power supply system includes an energy storage module, and whether the actual input voltage of the power supply system is greater than or equal to third voltage threshold. Wherein, if the power supply system includes the energy storage module, and the actual input voltage is greater than or equal to the third voltage threshold, the limited current value of the power supply system is adjusted according to the actual input voltage to obtain the target limited current value.
  • the energy storage module may be a battery.
  • the rectifier may output alarm information, where the alarm information is used to indicate that the current power grid is a weak power grid.
  • the rectifier can adjust the limited current value of the power supply system to the initial limited current value.
  • the limited current value of the power supply system is adjusted to the initial limited current value.
  • the rectifier can adjust the limited current value of the power supply system, so that the power supply system can charge the load with the maximum charging voltage and improve the intelligence of the power supply system.
  • an embodiment of the present application provides a power supply device, which is arranged in a power supply system, and the power supply system supplies power to a load through an external power grid, and the power supply device includes:
  • the processing module is used for judging whether the current power grid is a weak power grid, and if the current power grid is a weak power grid, the target limiting current value is determined according to the actual input voltage of the power supply system.
  • a power supply module configured to supply power to the load based on the target limit current value.
  • the processing module is specifically configured to determine that the current power grid is a weak power grid if the number of times the power supply system is in an undervoltage state within a preset time period is greater than or equal to a preset number of times.
  • the processing module is further configured to determine whether the power supply system is in an undervoltage state according to at least one of the bus voltage of the power supply system and the actual input voltage.
  • the processing module is specifically configured to, if the bus voltage is less than or equal to the first undervoltage threshold, and/or the actual input voltage is less than or equal to the second undervoltage threshold, determine the The power system is in an undervoltage state.
  • the processing module is specifically configured to adjust the limited current value of the power supply system to a first limited current value, and obtain the sum of the first limited current value and the preset adjusted limited current value and, and the sum of the first limit current value and the preset adjustment limit current value is used as the second limit current value; according to the first actual input voltage when the power system works at the second limit current value, The target limit current value is determined.
  • the processing module is specifically configured to perform the following steps:
  • the processing module is further configured to adjust the limited current value of the power supply system to an initial limited current value if the actual output current of the power supply system is less than the target limited current value.
  • the processing module is further configured to adjust the limited current value of the power supply system to an initial limited current value if the actual input voltage is greater than or equal to a second undervoltage threshold.
  • the processing module is specifically configured to determine whether the power supply system includes an energy storage module, and whether the actual input voltage of the power supply system is greater than or equal to a third voltage threshold, and if the power supply system If the energy storage module is included, and the actual input voltage of the power supply system is greater than or equal to the third voltage threshold, the target limiting current value is determined according to the actual input voltage of the power supply system.
  • the processing module is further configured to output alarm information if the current power grid is a weak power grid, where the alarm information is used to indicate that the current power grid is a weak power grid.
  • an embodiment of the present application provides a power supply device, the power supply device includes: a processor and a memory; wherein, the memory is used to store computer-executable program codes, and the program codes include instructions; when the processor executes the instructions, the instructions The power supply device is caused to perform a method as provided by the first aspect or each possible design of the first aspect.
  • an embodiment of the present application provides a power supply device, including a unit, a module, or a circuit for executing the method provided by the above first aspect or each possible design of the first aspect.
  • the power supply device may be a rectifier, or may be a module applied to the rectifier, for example, may be a chip applied to the rectifier.
  • an embodiment of the present application provides a power supply device (eg, a chip), where a computer program is stored on the power supply device, and when the computer program is executed by the power supply device, the first aspect or the first aspect is implemented methods provided by each possible design.
  • a power supply device eg, a chip
  • embodiments of the present application provide a computer program product containing instructions, which, when executed on a computer, cause the computer to execute the method in the first aspect or various possible designs of the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer executes the first aspect or each of the first aspect. method in a possible design.
  • an embodiment of the present application provides a power supply system, including a power supply device and a monitoring device according to the second aspect or various possible designs, where the monitoring device is used to monitor the power supply device.
  • an embodiment of the present application provides a power supply system, including the power supply system in the eighth aspect, a power grid, and a power transformer, wherein the power grid supplies power to the power supply system through the power transformer.
  • FIG. 1 is a schematic diagram of a scenario to which the power supply method provided by the embodiment of the present application is applicable;
  • FIG. 2 is a schematic diagram of a power supply
  • FIG. 3 is a schematic flowchart of an embodiment of a power supply method provided by an embodiment of the present application
  • FIG. 4 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a power supply device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of another power supply device provided by an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a scenario where the power supply method provided by the embodiment of the present application is applicable.
  • this scenario can include grids, power transformers, power systems, and loads.
  • the power transformer can transform the voltage output by the power grid, and transmit the transformed voltage to the power supply system through the power transmission cable, so as to realize the power supply system to supply power to the load.
  • the power system may include a rectifier and a battery, and the rectifier may convert alternating current from the grid to direct current and output the direct current to the load to power the load.
  • the rectifier can also output the converted direct current to the battery to charge the battery.
  • the battery can store electrical energy in a charged state, so that when the power supply system is powered down or the voltage of the power supply system is insufficient, it can be discharged to supply power to the load.
  • the load may be, but is not limited to, a remote radio unit (remote radio unit, RRU), and the load may also include a baseband processing unit (building base band unit, BBU).
  • RRU remote radio unit
  • BBU baseband processing unit
  • FIG. 1 may also include other devices, for example, the power supply system may also include a monitoring device, etc., which is not limited in the embodiments of the present application, wherein the power supply method in the embodiments of the present application also includes It is applicable to a power supply system that does not include a battery.
  • the power supply system includes a battery as an example for description.
  • the distance between the power system and the power transformer may be relatively long. As shown in Figure 1, the distance between the power system and the power transformer is greater than 1KM.
  • the impedance of the power transmission cable between the power transformer and the power supply system is abnormally large.
  • the voltage drop of the power transmission cable between the power transformer and the power supply system is too large.
  • undervoltage can be understood as the input voltage of the power supply system is too low, which does not meet the minimum requirements for the normal operation of the power supply system.
  • FIG. 2 is a schematic diagram of a power supply.
  • a power transformer can be added between the power system and the power transformer to shorten the length of the transmission cable between the power system and the power transformer, thereby reducing the distance between the power transformer and the power system.
  • the impedance of the power transmission cables between them is to avoid the input undervoltage of the power system.
  • an additional power transformer is provided every 500m between the power supply system and the power transformer.
  • the cost required by this method is high, and if the above-mentioned problems mostly occur in mountainous areas, the power transformer is bulky and heavy, and installation is difficult.
  • the limit current value refers to the maximum current that the power supply system can output.
  • engineers usually adjust the limited current value of the power supply system to a limited current value that can meet the normal operation of the general load according to experience.
  • RUU is the main load.
  • the output current is limited in the power system (ie, the current value is limited)
  • the output power is limited, and the input power is also limited indirectly.
  • the load may lose power due to insufficient power supply.
  • the batteries in the power system will be discharged, resulting in power failure. And if the battery is in the over-discharge state for a long time, the battery will be scrapped.
  • an embodiment of the present application provides a power supply method.
  • the power supply system can adaptively adjust the limited current value of the power supply system according to the input voltage, so as to provide power for the load while avoiding the occurrence of undervoltage in the power supply system.
  • the limited current value of the power supply system can be adjusted to a value commonly used by the power supply system, so that the power supply system can charge the load and supply power to the power supply system.
  • the limited current value of the power supply system can be adjusted to a lower value, so that the power supply system can output a small output current to ensure that the power supply system can Provide power to the load while avoiding undervoltage in the power system.
  • the hardware structure of the current power supply system is not changed, and the power supply system can automatically adjust the limited current value of the power supply system according to the input voltage, which improves the intelligence of the power supply system and ensures the service life of the battery.
  • the power supply method has no manual participation in the whole process, which reduces the difficulty and cost of operation and maintenance.
  • the method provided by the embodiment of the present application can be applied not only to the power supply scenario shown in FIG. 1 above, but also to the scenario where the input voltage of the power supply system is small, which is not limited by the embodiment of the present application.
  • the execution subject for executing the following power supply method in this embodiment of the present application may be a power supply device, and the power supply device may be a power supply system, or a chip in a power supply system, or a rectifier or other module included in a current power supply system, or a current
  • the rectifier or chips in other modules included in the power supply system are described in the following embodiments by taking the execution subject as the rectifier as an example.
  • FIG. 3 is a schematic flowchart of an embodiment of a power supply method provided by an embodiment of the present application. As shown in FIG. 3 , the power supply method provided by the embodiment of the present application may include:
  • the voltage output by the power grid is variable.
  • the influencing factors may be the switching of equipment or lines in the power grid, or the aging of equipment in the power grid. If the power grid is a weak power grid, it can be understood that the voltage output by the power grid is less than the voltage threshold. It should be understood that the rectifier can determine whether the current grid is a weak grid.
  • a possible implementation manner for the rectifier to determine whether the current power grid is a weak power grid is: for example, a communication module may be included in the power grid, a communication module may be included in the power supply system, and the rectifier may communicate with the power supply system. Module connection.
  • the power grid can interact with the communication module in the power supply system through the communication module therein, so as to achieve the purpose of informing the rectifier that the current power grid is a weak power grid.
  • the power grid can send a weak power grid message to the communication module in the power supply system through the communication module therein, and the weak power grid message indicates that the current power grid is a weak power grid.
  • the communication module in the power system receives the message, it can synchronize the message to the rectifier.
  • the rectifier determines whether the power grid is a weak power grid is: when the rectifier determines that the power system is in an undervoltage state, it may determine that the current power grid is a weak power grid. In this manner, the rectifier can determine whether the power system is in an undervoltage state according to at least one of the bus voltage and the actual input voltage of the power system.
  • the bus voltage of the power system may be the voltage of a power factor correction (PFC) bus inside the rectifier.
  • the actual input voltage of the power system may be the current input voltage of the power system.
  • the power supply system may include a monitoring device, the monitoring device may monitor the actual input voltage of the power supply system, the monitoring device obtains the actual input voltage of the power supply system, and can send the actual input voltage of the power supply system to the rectifier, so that the rectifier can obtain power The actual input voltage of the system.
  • the first way the rectifier can determine whether the power system is in an undervoltage state according to the bus voltage of the power system. Wherein, if the bus voltage is less than or equal to the first undervoltage threshold, the rectifier can determine that the power system is in an undervoltage state.
  • the first undervoltage threshold may be 300V. It should be understood that different types of rectifiers may have different first undervoltage thresholds.
  • the second way the rectifier can determine whether the power system is in an undervoltage state according to the actual input voltage of the power system. Wherein, if the actual input voltage is less than or equal to the second undervoltage threshold, the rectifier determines that the power system is in an undervoltage state. Exemplarily, the second undervoltage threshold may be 70V.
  • the third way the rectifier can determine whether the power system is in an undervoltage state according to the bus voltage of the power system and the actual input voltage of the power system. Wherein, if the bus voltage is less than or equal to the first undervoltage threshold, and the actual input voltage is less than or equal to the second undervoltage threshold, the rectifier determines that the power system is in an undervoltage state. It should be understood that the three manners are exemplified in the embodiments of the present application.
  • the first undervoltage threshold and the second undervoltage threshold in this embodiment of the present application may be preset, and the first undervoltage threshold and the second undervoltage threshold may be stored in the rectifier.
  • the bus voltage of the power system and the actual input voltage of the power system can be changed. Therefore, in the embodiment of the present application, if the power system is in an undervoltage state at one time, it may not be possible to determine that the current power grid is a weak power grid. precise. Exemplarily, if the voltage output by the power grid suddenly decreases greatly, but immediately rises again, at this time, the rectifier determines that the current power grid is a weak power grid, which may limit the output current adjusted by the power system.
  • the rectifier determines that the current grid is a weak grid.
  • the preset number of times may be 9 times, and the preset time period may be 3 minutes. Wherein, if within 3 minutes, the number of times that the power system is in an undervoltage state is greater than or equal to 9 times, the rectifier determines that the current power grid is a weak power grid.
  • the rectifier may determine that the current voltage of the power grid may cause repeated restarts of the power supply system.
  • the rectifier may adjust the limited current value of the power supply system according to the actual input voltage of the power supply system, so as to avoid the phenomenon of undervoltage caused by insufficient power supply of the power supply system to the load.
  • the limited current value can be understood as the maximum current value that the power system can output.
  • the rectifier may determine the target limited current value according to the actual input voltage of the power supply system, so that the rectifier can adjust the limited current value of the power supply system to the target limited current value.
  • the power supply system can supply power to the load when the power supply system operates at the target limit current value, and the power supply system will not restart under voltage.
  • the corresponding relationship between the actual input voltage and the target limited current value may be stored in the rectifier, and the corresponding relationship may be obtained by testing according to the scenario shown in FIG. 1 above.
  • the target limited current value corresponding to the actual input voltage may be: on the premise of a certain load, the maximum current that can maintain the actual input voltage to vary within a preset range. Exemplarily, if the actual input voltage is 150V, if the preset range is 140V-160V, then if the rectifier adjusts the limiting current value, the actual input voltage can be changed within the preset range of 140V-160V, then the rectifier can adjust the current limit value.
  • the limit current value is used as the target limit current value. Wherein, after the rectifier determines the actual input voltage, the target limited current value can be determined according to the corresponding relationship between the actual input voltage and the target limited current value.
  • the method of obtaining the above-mentioned corresponding relationship according to the scenario test shown in the above-mentioned FIG. 1 may be: when the load and the actual input voltage are constant, the rectifier can change the limit current value, and then record the change of the actual input voltage , and further set the maximum limited current value among the limited current values as the target limited current value. In this way, target limiting current values corresponding to different actual input voltages can be obtained.
  • the rectifier may store the corresponding relationship between the actual input voltage, the target limiting current value, and the load. Because when the actual input voltage is the same but the load is different, different target limiting current values have different effects on the actual input voltage. Therefore, in the embodiment of the present application, the rectifier can store the corresponding relationship between the actual input voltage, the target limiting current value and the load. The corresponding relationship may also be tested according to the scenario shown in FIG. 1 above. Exemplarily, when the load and the actual input voltage are constant, the rectifier can change the limiting current value, thereby recording the change of the actual input voltage, and then taking the maximum limiting current value among the limiting current values as the target limiting current value.
  • the rectifier can determine the target limiting current value according to the corresponding relationship between the actual input voltage, the target limiting current value and the load. It should be noted that, in the embodiment of the present application, the rectifier may use the load in the working state as the parameter for obtaining the target limited current value through the above calculation.
  • the rectifier can obtain the target limiting current value according to the actual input voltage and the load of the power supply system.
  • the rectifier in order to ensure that the power supply system is not restarted repeatedly when the power grid is weak, it is sufficient to ensure that power is supplied to the main load among the loads.
  • the rectifier can obtain the target limiting current value according to the actual input voltage and the main load in the load.
  • the main load in the embodiment of the present application is preset. When the rectifier determines the load in the working state, the main load in the load in the working state can be determined, and then the rectifier can use the current required by the main load as the main load. Target limit current value.
  • the rectifier may adjust the limited current value of the power supply system to the target limited current value, and then supply power to the load based on the target limited current value. It should be understood that after the rectifier adjusts the limited current value of the power system to the target limited current value, the rectifier can adjust the output current according to the actual input voltage to ensure that the output current is not higher than the target limited current value. It should be understood that, in the embodiment of the present application, the manner in which the rectifier supplies power to the load according to the target limited current value may refer to the relevant description in the current technical solution, which will not be repeated here.
  • An embodiment of the present application provides a power supply method, the method includes judging whether the current power grid is a weak power grid, and if the current power grid is a weak power grid, determining a target limited current value according to the actual input voltage of the power supply system, and based on the target limited current value supply power to the load.
  • the power supply system can adaptively adjust the limited current value of the power supply system according to the input voltage, so that the power supply system can be prevented from under-voltage while providing power to the load. For example, when the input voltage is large, the limiting current value of the power supply system can be adjusted to a higher value, so that the power supply system can output a large output current to ensure efficient charging of the load.
  • the The limiting current value of the power supply system is adjusted to a lower value, so that the power supply system can output a smaller output current, so as to ensure that the power supply system can be provided with power while avoiding the undervoltage of the power supply system.
  • the rectifier can obtain the target limited current value according to the pre-stored corresponding relationship (such as the corresponding relationship between the actual input voltage and the target limited current value, or the corresponding relationship between the actual input voltage, the target limited current value and the load), In the above manner, the preset relationship is obtained in the test scene. In the actual application process, the corresponding relationship may not match the actual application due to the use time of the components in the power system or other factors.
  • the above-mentioned embodiment describes that the rectifier can obtain the target limited current value according to the actual input voltage and the main load in the load.
  • the rectifier can determine the target limited current value in the process of adjusting the limited current value according to the actual input voltage, so that the power supply can be
  • the method is more suitable for practical application scenarios and guarantees power supply for each load.
  • FIG. 4 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application. As shown in FIG. 4 , the power supply method provided in this embodiment of the present application may include:
  • S403 Obtain the sum of the first limited current value and the preset adjustment limited current value, and use the sum of the first limited current value and the preset adjusted limited current value as the second limited current value.
  • S404 Determine a target limited current value according to the first actual input voltage when the power system operates at the second limited current value.
  • the rectifier can continuously adjust the limited current value of the power supply system, so that the limited current value of the power supply system reaches an appropriate limited current value, that is, the target limited current value. .
  • the rectifier may first adjust the limited current value of the power supply system to the first limited current value.
  • the first limited current value may be the lowest limited current value supported by the power system, and the lowest limited current value may be predefined.
  • the first limit current value of the power system may be 1A.
  • the first limited current value may be related to properties of the power supply system, and the properties of the power supply system may include the type of rectifier, the type of battery, the capacity, and the like.
  • a preset adjustment limiting current value may be preset in the embodiment of the present application, and the preset adjustment limiting current value may be an increase or decrease of the rectifier on the basis of the limiting current value of the adjusted power supply system.
  • Numerical value to limit the current value is obtained after the rectifier adjusts the limited current value of the power supply system to the first limited current value, the limited current value can be gradually increased.
  • the rectifier can obtain the sum of the first limit current value and the preset adjustment limit current value, and use the sum of the first limit current value and the preset adjustment limit current value as the second limit current value, and use the limit current of the power system value is adjusted to the second limiting current value.
  • the rectifier may obtain that the sum of the first limit current value and the preset adjustment limit current value is 1.5A on the basis that the first limit current value may be 1A, and Taking the 1.5A as the second limiting current value, the rectifier can adjust the limiting current value of the power system to 1.5A.
  • the rectifier may determine whether to readjust the second limited current value of the power supply system according to the actual input voltage of the power supply system.
  • the rectifier may determine whether to readjust the second limited current value of the power supply system according to the actual input voltage of the power supply system after adjusting the first limited current value to the second limited current value, and the preset range.
  • a preset range of the actual input voltage can be preset, and when the actual input voltage of the power supply system is within the preset range, it can be determined that the power supply system will not restart repeatedly, and the current value of the power supply system is not limited Readjust.
  • the limit current value of the power supply system can be readjusted.
  • the rectifier may determine that the second limiting current value is smaller, and may adjust the second limiting current value to a larger value.
  • the first voltage threshold may be the upper limit (or upper boundary) of the preset range of the actual input voltage.
  • the rectifier may obtain the sum of the second limited current value and the preset adjustment limited current value, and use the sum of the second limited current value and the preset adjusted limited current value as the third limited current value, and then use the power system The limiting current value is adjusted to the third limiting current value. Similar to this step, if the actual input voltage of the power system operating at the third limiting current value is greater than the first voltage threshold, the rectifier can continue to adjust the third limiting current value. The adjustment method of the current value.
  • the rectifier may determine that the second limiting current value is larger, and the second limiting current value needs to be adjusted to a smaller value.
  • the second voltage threshold may be the lower limit (or lower boundary) of the preset range of the actual input voltage, that is, the second voltage threshold in this embodiment of the present application is smaller than the first voltage threshold.
  • the rectifier may obtain the difference between the second limiting current value and the preset adjustment limiting current value, use the difference between the second limiting current value and the preset adjusting limiting current value as the third limiting current value, and then use the difference between the second limiting current value and the preset adjusting limiting current value as the third limiting current value.
  • the limiting current value of the power system is adjusted to the third limiting current value.
  • the limited current value can be adjusted to the second limited current value (or the third limited current value) within a preset time period, so as to avoid the excessively fast adjustment of the limited current value and affect the power supply. system stability.
  • the preset duration may be 5s, and the rectifier may adjust the limit current value of the power supply system from 1A to 1.5A within 5s.
  • the second limited current value may be used as the target limited current value in the embodiment of the present application.
  • the actual input voltage of the power supply system can be obtained after waiting for the preset time period. And the actual input voltage is taken as the actual input voltage when the power system operates at the second limiting current value (or the third limiting current value). Because the actual input voltage of the power supply system may change in a short time after the rectifier adjusts the limiting current value of the power supply system, in the embodiment of the present application, in order to obtain a stable and accurate actual input voltage, it is possible to wait for a preset period of time to obtain the power supply system the actual input voltage.
  • 155V can be used as the power system to work at the second limited current value. (or the third limit current value) at the actual input voltage.
  • the determination of the target limited current value by the rectifier according to the first actual input voltage when the power supply system operates at the second limited current value can be regarded as an iterative process.
  • This iterative process can be shown in the following steps:
  • step A when t is 1, the actual input voltage of the iteration period 1 is the first actual input voltage. If the first actual input voltage is greater than or equal to the second voltage threshold, and the first actual input voltage is less than or equal to the first voltage threshold, the second limiting current value may be used as the target limiting current limiting value. Wherein, if the first actual input voltage is greater than the first voltage threshold, step B may be performed. Or if the first actual input voltage is less than the second voltage threshold, step C may be performed.
  • step B if the first actual input voltage is greater than the first voltage threshold, the sum of the limiting current value (the second current limiting value) of the iteration cycle 1 and the preset adjustment limiting current value can be obtained, and the second limit The sum of the current value and the preset adjustment limit current value is used as the limit current value of the next iteration period, such as the third current limit value.
  • step C if the first actual input voltage is less than the second voltage threshold, obtain the difference between the limiting current value (second current limiting value) of iteration cycle 1 and the preset adjustment limiting current value, and set the second current limiting value
  • the difference between the value and the preset adjustment limit current value is used as the limit current value of the next iteration period, such as the third current limit value.
  • the rectifier may acquire the actual input voltage (eg, the second input voltage) when the power system operates at the third current limit value, and enter the next iteration cycle, and return to execution A.
  • return to execution A that is, determine the magnitude relationship between the second input voltage, the first voltage threshold, and the second voltage threshold, and then execute the above step A, step B or step C.
  • the rectifier can first adjust the limited current value of the power supply system to the first limited current value, such as 1A. After the rectifier adjusts the limited current value of the power supply system to 1A, it can change the limited current value of the power supply system from 1A within 5s. Adjust to 1.5A, which is the second limiting current value. Wait for 2s to obtain the actual input voltage of the power system.
  • the rectifier can continue to adjust the limit current value of the power system from 1.5A to 2A within 5s.
  • the 2A is the third limit current value, wait for 2s Obtain the actual input voltage of the power supply system. If the actual input voltage is still greater than 160V, the rectifier can continue to increase the limit current value of the power supply system. On the contrary, if the input voltage of the power supply system is less than 150V after adjusting the limited current value, the method in the above step C can be used to reduce the adjusted limited current value to perform dynamic adjustment.
  • the rectifier can adjust the limited current value of the power system from 2A to 1.5A within 5s , wait 2s to obtain the actual input voltage of the power supply system, if the actual input voltage is within the preset range of 150V-160V, 1.5A can be used as the target limiting current value. That is to say, because the actual input voltage shows a trend of increasing first and then decreasing as the power supply system increases from the first limiting current value, in the above embodiment, the limiting current value when the actual input voltage reaches the maximum value can be taken as the target Limit current value.
  • the rectifier can dynamically adjust the limited current value of the power supply system according to the actual input voltage, and then adjust the limited current value to the target limited current value.
  • This method is more suitable for actual application scenarios and fully based on real-time actual conditions.
  • the input voltage charges the load, maximizing the utilization of the grid and improving charging efficiency.
  • the power supply system in this embodiment of the present application may include a battery.
  • the battery When the power supply system is in an undervoltage state, the battery may also discharge to the load, so the battery may also provide a part of the load current to charge the load.
  • the power supply system includes a battery, if the power supply system activates the technical solution of automatically adjusting the limiting current value in the above embodiment, after the limiting current value is reduced, the current for charging the battery by the power supply system is reduced, and the current for the load is mainly ensured to avoid Ensure that the power supply of the power system is stable, and at the same time charge the battery with a relatively small current.
  • the battery can also be charged normally, but the charging speed is slower than when the current value is not limited, but the power system will not crash (continuous restart). If the power supply system does not limit the limiting current value, then the current of the power supply system to charge the battery increases, and the load current of the power supply system (the current for charging the battery and the load) exceeds the capacity of the power grid, resulting in repeated restarts of the power supply system under voltage. The load cannot supply power stably, and the battery cannot be charged. After a long time, the battery will be damaged due to long-term undervoltage and cannot be reused.
  • the above embodiment describes the limiting current when the actual input voltage reaches the maximum value value as the target limit current value. If the actual input voltage of the power system is very low (such as 150V) when the rectifier starts to adjust the limiting current value of the power supply system, then continue to increase the limiting current value of the power supply system, which will cause the actual input voltage of the power supply system to continue to decrease, resulting in There is an undervoltage in the power system. That is to say, when the input voltage itself is very low, the range of the limited current value that can be adjusted by the power supply system is very limited.
  • the actual input voltage can be adjusted
  • the increase or decrease of the limiting current value of the rectifier to the power supply system will not cause undervoltage in the power supply system, and the limiting current value of the power supply system can also be adjusted to the target limiting current value.
  • This method can improve the stability of the power supply system and increase the stability of the power supply method.
  • FIG. 5 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application. As shown in FIG. 5 , in this embodiment of the present application, the above S402 may be replaced by S402' and S403':
  • the energy storage module of the power supply system may be the battery in the foregoing FIG. 1 , or other energy storage elements, such as capacitors, etc., which is not limited in this embodiment of the present application.
  • the monitoring device mentioned in the above embodiment can monitor the working state of each component in the power supply system, and the monitoring device can also monitor whether the power supply system includes an energy storage module.
  • the rectifier may interact with the monitoring device to determine whether the power supply system includes an energy storage module. Exemplarily, for example, the rectifier can read the state of the energy storage module in the monitoring device, and if the state of the energy storage module is the in-position state, it is determined that the power supply system includes the energy storage module.
  • the third voltage threshold may be an empirically set value, such as 170V.
  • the rectifier in the embodiment of the present application performs the action of adjusting the current limiting value of the power supply system in the above embodiment. It should be understood that, for “adjusting the limited current value of the power supply system to the first limited current value” in S403 ′, reference may be made to the relevant description of the foregoing embodiment S402 .
  • the purpose of satisfying that the actual input voltage is greater than or equal to the third voltage threshold is to prevent the power supply system
  • the occurrence of undervoltage ensures the stability of the power supply system.
  • FIG. 6 is a schematic flowchart of another embodiment of the power supply method provided by the embodiment of the present application.
  • the power supply method provided by this embodiment of the present application may include:
  • the rectifier can output alarm information.
  • the alarm information is used to indicate that the current power grid is a weak power grid.
  • one or more of a display module, an alarm light or a buzzer may be provided on the rectifier.
  • the way the rectifier enters the alarm information can display text information such as "weak power grid" for the rectifier control display module.
  • the rectifier can turn on the warning light, or the rectifier can control the buzzer to turn on and beep.
  • the rectifier may also send the alarm information to the user's terminal device or the like through the communication module.
  • the embodiments of the present application do not limit the manner of outputting the alarm information, and the display module, the alarm light or the buzzer are used as examples for description.
  • the rectifier can adjust the limited current value of the power supply system to the initial limited current value.
  • the initial limited current value can be understood as the limited current value of the power supply system before the rectifier does not adjust the limited current value.
  • the manner in which the rectifier determines that the current grid is not a weak grid may be: if the number of times the power system is in an undervoltage state within a preset period of time is less than a preset number of times, the current grid is determined not to be a weak grid.
  • the actual input voltage is greater than or equal to the second undervoltage threshold, it is determined that the current grid is not a weak grid.
  • the second under-voltage threshold can be understood as a voltage required when the power system works normally, such as 220V, or other preset voltage values.
  • the purpose of the rectifier adjusting the limited current value of the power supply system to the initial limited current value is to enable the power supply system to charge the load with the maximum charging voltage (ie, the output voltage of the power supply system) .
  • the rectifier may adjust the limited current value of the power supply system to the initial limited current value.
  • the actual input voltage within the preset time period is greater than or equal to the second undervoltage threshold, it is determined that the current power grid is not a weak power grid, or when the actual output current within the preset time period is less than the target limit current value, Then it is determined that the current power grid is not a weak power grid.
  • the purpose of this is to avoid the misjudgment of the rectifier caused by the sudden voltage change of the power grid, thereby improving the accuracy and stability of the power supply method.
  • the rectifier when the rectifier adjusts the limited current value of the power supply system to the initial limited current value, the rectifier may further include eliminating alarm information to indicate that the current grid is not a weak grid. Exemplarily, such as turning off the display of text information such as "weak power grid". Alternatively, the rectifier turns off the warning light, or the rectifier turns off the buzzer.
  • alarm information may be output to remind that the current power grid is a weak power grid.
  • the rectifier can also adjust the limited current value of the power system to the initial limited current value when the current power grid is not a weak power grid, so that the power system can charge the load with the maximum charging voltage and improve the intelligence of the power system.
  • FIG. 7 is a schematic flowchart of another embodiment of a power supply method provided by an embodiment of the present application.
  • the power supply method provided by the embodiment of the present application may include:
  • the rectifier determines that the current power grid is a weak power grid.
  • S704 Adjust the limited current value of the power supply system to a first limited current value of 1A.
  • S705 adjust the limit current value of the power system from 1A to 1.5A within 5s.
  • the rectifier performs the action of adjusting the limiting current value of the power supply system in the embodiment of the present application.
  • the rectifier performs the above S706, if the actual input voltage of the power supply system operating at the limiting current value is less than 150V, the steps in S707 can be performed. Similarly, in the above S707, if the actual input voltage of the power supply system operating at the limited current value is greater than 160V, the steps in S706 can be performed. That is to say, in the embodiment of the present application, when the actual input voltage of the power supply system working at the limiting current value is less than 150V, the operation of reducing the limiting current value of the power supply system can be performed. When the voltage is greater than 160V, the operation of increasing the limiting current value of the power supply system can be performed until the actual input voltage when the power supply system operates at the limiting current value is less than or equal to 160V and greater than or equal to 150V.
  • FIG. 8 is a schematic structural diagram of a power supply device according to an embodiment of the present application.
  • the power supply device involved in this embodiment may be the aforementioned rectifier, may also be a chip applied to a rectifier, or may be another device or module applied to a power supply system or a power supply system.
  • the power supply device can be used to perform the actions of the rectifier in the above method embodiments.
  • the power supply apparatus may include: a processing module 801 and a power supply module 802 . in,
  • the processing module 801 is configured to determine whether the current power grid is a weak power grid, and if the current power grid is a weak power grid, determine the target limited current value according to the actual input voltage of the power supply system.
  • the power supply module 802 is configured to supply power to the load based on the target limited current value.
  • the processing module 801 is specifically configured to determine that the current power grid is a weak power grid if the number of times the power system is in an undervoltage state within a preset time period is greater than or equal to a preset number of times.
  • the processing module 801 is further configured to determine whether the power system is in an undervoltage state according to at least one of a bus voltage of the power system and an actual input voltage.
  • the processing module 801 is specifically configured to determine that the power system is in an undervoltage state if the bus voltage is less than or equal to the first undervoltage threshold, and/or the actual input voltage is less than or equal to the second undervoltage threshold pressure state.
  • the processing module 801 is specifically configured to adjust the limited current value of the power supply system to the first limited current value, and obtain the sum of the first limited current value and the preset adjusted limited current value, and The sum of the first limited current value and the preset adjustment limited current value is used as the second limited current value; the target limited current value is determined according to the first actual input voltage when the power supply system operates at the second limited current value.
  • processing module 801 is specifically configured to perform the following steps:
  • the processing module 801 is further configured to adjust the limited current value of the power supply system to the initial limited current value if the actual output current of the power supply system is less than the target limited current value.
  • the processing module 801 is further configured to adjust the limited current value of the power system to the initial limited current value if the actual input voltage is greater than or equal to the second undervoltage threshold.
  • the processing module 801 is specifically configured to determine whether the power supply system includes an energy storage module, and whether the actual input voltage of the power supply system is greater than or equal to a third voltage threshold; if the power supply system includes an energy storage module, and If the actual input voltage of the power supply system is greater than or equal to the third voltage threshold, the target limiting current value is determined according to the actual input voltage of the power supply system.
  • the processing module 801 is further configured to output alarm information if the current power grid is a weak power grid, and the alarm information is used to indicate that the current power grid is a weak power grid.
  • the power supply device provided in the embodiment of the present application can perform the action of the rectifier in the foregoing method embodiment, and the implementation principle and technical effect thereof are similar, and are not repeated here.
  • processing modules may be implemented in the form of software calling through processing elements; and may also be implemented in the form of hardware.
  • the processing module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device Call and execute the function of the above processing module.
  • all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability.
  • each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital) signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), etc.
  • ASIC application specific integrated circuits
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the processing element may be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call program codes.
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 9 is a schematic structural diagram of another power supply device provided by an embodiment of the present application.
  • the power supply device may be the rectifier in the foregoing embodiment, and the power supply device may include: a processor 901 (eg, a CPU) and a memory 902 .
  • the memory 902 may include a high-speed random-access memory (RAM), and may also include a non-volatile memory (non-volatile memory, NVM), such as at least one disk memory, and various instructions can be stored in the memory 902 , used to complete various processing functions and implement the method steps of the present application.
  • the power supply device involved in the present application may further include: a communication bus 903 and a communication port 904 .
  • the communication bus 903 is used to realize the communication connection between the elements.
  • the above-mentioned communication port 904 is used to implement connection and communication between the power supply device and other peripheral devices.
  • the above-mentioned memory 902 is used to store computer-executable program codes, and the program codes include instructions; when the processor 901 executes the instructions, the instructions cause the processor 901 of the power supply apparatus to execute the processing of the terminal device in the foregoing method embodiments. Actions, the implementation principles and technical effects thereof are similar, and are not repeated here.
  • a computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center over a wire (e.g.
  • a computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media.
  • Useful media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.
  • Embodiments of the present application further provide a power supply system, which includes the power supply device (eg, a rectifier) and a monitoring device as described in the foregoing embodiments, and may also include batteries or other energy storage modules.
  • the power supply system may be as shown in the power supply system shown in FIG. 1 or FIG. 2 above.
  • An embodiment of the present application provides a power supply system
  • the power supply system may include the above-mentioned power supply system, a power grid, a power transformer, and the like.
  • the power grid can supply power to the power supply system through the power transformer.
  • the power supply system may be the power supply system shown in FIG. 1 or FIG. 2 above.
  • plural refers to two or more.
  • the term “and/or” in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases.
  • the character "/" in this article generally indicates that the related objects before and after are an “or” relationship; in the formula, the character "/" indicates that the related objects are a "division" relationship.

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Abstract

一种供电方法、装置、电子设备和可读存储介质，该方法包括：判断当前的电网是否为弱电网（S301），若当前的电网为弱电网，则根据电源系统的实际输入电压确定目标限制电流值（S302），并基于目标限制电流值对负载进行供电（S303）。电源系统可以根据输入电压，自适应地调整电源系统的限制电流值，进而能够在为负载提供电能的同时，避免电源系统出现欠压。如输入电压较大时，将电源系统的限制电流值调整为较高的数值，进而使得电源系统可以输出较大的输出电流，保证高效率地为负载充电。当输入电压较小时，将电源系统的限制电流值调整为较低的数值，进而使得电源系统可以输出较小的输出电流，以保证能够在为负载提供电能的同时，避免电源系统出现欠压。

Description

供电方法、装置、电子设备和可读存储介质 技术领域
本申请涉及通信技术领域，尤其涉及一种供电方法、装置、电子设备和可读存储介质。
背景技术
电源系统是通信系统中的重要组成部分，用于将电网中的电能提供给负载。一些电源系统可能部署在山区、高速路等场景中，为设置在这些场景中的射频拉远单元(remote radio unit，RRU)等负载供电。在这些场景中，可能存在电源系统与电力变压器距离较远的情况。当电源系统距离电力变压器的距离较远时，会导致电力变压器与电源系统之间的输电线缆的阻抗异常偏大，相应的，输电线缆的压降过大，从而可能导致电源系统出现输入欠压并反复重启，进而导致RRU等负载无法正常工作的情况。
现有技术中，当电源系统由于输入欠压出现反复重启的问题后，通常由工程师在电源系统的现场，人工修改电源系统的限制电流值，使得输入电压不会跌落至电源系统的欠压点以下，进而避免电源系统反复重启。
但是，现有技术的方式强行限制了电源系统的供电能力，在负载较重的情况下，可能导致负载因供电不足而掉电。
发明内容
本申请实施例提供一种供电方法、装置、电子设备和可读存储介质，电源系统可以根据输入电压，自适应地调整电源系统的限制电流值，进而能够在为负载提供电能的同时，避免电源系统出现欠压。
第一方面，本申请实施例提供一种供电方法，该方法可以应用于电源系统，或电源系统中的芯片，或电源系统中的整流器、也可以应用于整流器中的芯片。下面以应用于整流器为例对该方法进行描述，该方法中，电源系统通过外接电网对负载进行供电。整流器可以判断当前的电网是否为弱电网，且若当前的电网为弱电网，则可以根据电源系统的实际输入电压确定目标限制电流值，进而基于所述目标限制电流值对负载进行供电。
其中，若当前的电网为弱电网，则可以导致电源系统出现输入欠压。其中，当电源系统出现输入欠压时，会导致电源系统进行自我保护，进而造成电源系统中的组件(整流器和监控装置等)反复重启。本申请实施例中当当前的电网为弱电网时，整流器可以根据输入电压，自适应地调整电源系统的限制电流值，进而能够在为负载提供电能的同时，避免电源系统出现欠压。当电网正常，如可以为电源系统提供较大的输入电压时，可以将电源系统的限制电流值调整为电源系统常用的数值，进而使得电源系统可以为负载充电以及为电源系统中的电池充电，当电网为弱电网，如电源系统的输入电压较小时，可以将电源系 统的限制电流值调整为较低的数值，进而使得电源系统可以输出较小的输出电流，以保证能够在为负载提供电能的同时，避免电源系统出现欠压。
在一种可能的实现方式中，上述整流器判断当前的电网是否为弱电网的方法可以为：若所述电源系统在预设时段内处于欠压状态的次数大于或等于预设次数，则确定当前的电网为弱电网。因为电网输出的电压是变化的，因此电源系统的母线电压和电源系统的实际输入电压可以改变，因此本申请实施例中若电源系统一次处于欠压状态，就确定当前的电网为弱电网可能不准确。因此本申请实施例中为了提高整流器判断当前的电网是否为弱电网的准确性，采用电源系统在预设时段内处于欠压状态的次数判断当前电网是否为弱电网。
其中，整流器可以根据所述电源系统的母线电压和实际输入电压中的至少一种，确定所述电源系统是否处于欠压状态。可选的，若所述母线电压小于或等于第一欠压阈值，和/或，所述实际输入电压小于或等于第二欠压阈值，则确定所述电源系统处于欠压状态。
若当前的电网为弱电网，则整流器可以根据电源系统的实际输入电压确定目标限制电流值。该过程可以为：将所述电源系统的限制电流值调整至第一限制电流值；获取所述第一限制电流值与预设调整限制电流值的加和，将所述第一限制电流值与预设调整限制电流值的和作为第二限制电流值；根据电源系统工作在所述第二限制电流值时的实际输入电压，确定所述目标限制电流值。其中，该第一限制电流值可以为预定义的，为电源系统支持的最低限制电流值。本申请实施例中可以预先设置预设调整限制电流值，该预设调整限制电流值为整流器在调整后的电源系统的限制电流值的基础上，增加或减少的限制电流值的数值。整流器可以在调整第一限制电流值至第二限制电流值后，根据电源系统的实际输入电压，确定是否对电源系统的第二限制电流值进行再调整。若电源系统工作在第二限制电流值时的实际输入电压大于第一电压阈值，则整流器可以确定第二限制电流值较小，可以将第二限制电流值往大调整。应理解，该第一电压阈值可以为实际输入电压的预设范围的上限(或上边界)。本申请实施例中，整流器可以确定第二限制电流值与预设调整限制电流值之和，将第二限制电流值与预设调整限制电流值之和作为第三限制电流值，进而将电源系统的限制电流值调整至第三限制电流值。
其中，若所述电源系统工作在所述第二限制电流值时的实际输入电压小于第二电压阈值，则确定所述第二限制电流值与所述预设调整限制电流值之差，将所述第二限制电流值与所述预设调整限制电流值之差作为第三限制电流值，所述第二电压阈值小于第一电压阈值。若所述电源系统工作在所述第二限制电流值或第三限制电流值时的实际输入电压大于或等于第二电压阈值，并且，小于或等于第一电压阈值，则将所述第二限制电流值或第三限制电流值作为所述目标限制电流值。
换句话说，本申请实施例中整流器可以用迭代的方式，根据电源系统工作在所述第二限制电流值时的实际输入电压，确定所述目标限制电流值，具体步骤可以如下所述：
A、若所述电源系统在迭代周期t的实际输入电压大于或等于第二电压阈值，且所述迭代周期t的实际输入电压小于或等于第一电压阈值，则将迭代周期t的限制电流值作为所述目标限制电流值；否则，执行B或C；所述第一电压阈值大于所述第二电压阈值，当t＝1时，所述迭代周期t的实际输入电压为所述第一实际输入电压，t为大于或等于1的整数；
B、若所述迭代周期t的实际输入电压大于所述第一电压阈值，则获取所述迭代周期 t的限制电流值与所述预设调整限制电流值的加和，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的加和作为下一迭代周期的限制电流值；
C、若所述迭代周期t的实际输入电压小于第二电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的差值，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的差值作为下一迭代周期的限制电流值；
D、获取所述电源系统工作在下一迭代周期的限制电流值时的实际输入电压，并进入所述下一迭代周期，返回执行所述A。
本申请实施例中，整流器可以根据实际输入电压，可以动态调整电源系统的限制电流值，进而将限制电流值调整至目标限制电流值，该种方法更加贴合实际应用场景，充分根据实时的实际输入电压为负载充电，能够最大化利用电网的能力，且提高充电效率。
在一种可能的实现方式中，电源系统中可以包括电池。在该种场景下，当输入电压本身就很低时，电源系统可调整的限制电流值的范围就很有限，因此本申请实施例中为了保证电源系统调整限制电流值的准确性，可以在实际输入电压位于一合适电压范围内时，整流器对电源系统的限制电流值增大或减少不会导致电源系统出现欠压，且还能调整电源系统的限制电流值至目标限制电流值。该种方法能够提高电源系统的稳定性，增加供电方法的稳定性。据此，本申请实施例中可以在根据所述电源系统的实际输入电压确定目标限制电流之前，还判断所述电源系统是否包括储能模块，以及所述电源系统的实际输入电压是否大于或等于第三电压阈值。其中，若所述电源系统包括所述储能模块，且实际输入电压大于或等于第三电压阈值，则根据实际输入电压对电源系统的限制电流值进行调整，得到目标限制电流值。应理解，该储能模块可以为电池。
在一种可能的实现方式中，若整流器确定若当前的电网为弱电网，则可以输出告警信息，所述告警信息用于指示当前电网为弱电网。
另外，本申请实施例中，若当前的电网不为若电网，则整流器可以将电源系统的限制电流值调整至初始限制电流值。示例性的，若实际输出电流小于所述目标限制电流值，则将所述电源系统的限制电流值调整至初始限制电流值。或者，若实际输入电压大于或等于预设电压，则将所述电源系统的限制电流值调整至初始限制电流值。其中，当整流器可以在当前电网不为弱电网时调整电源系统的限制电流值，使得电源系统可以以最大充电电压为负载充电，提高电源系统的智能化。
第二方面，本申请实施例提供一种供电装置，设置于电源系统中，电源系统通过外接电网对负载进行供电，该供电装置包括：
处理模块，用于判断当前的电网是否为弱电网，且若当前的电网为弱电网，则根据电源系统的实际输入电压确定目标限制电流值。
供电模块，用于基于所述目标限制电流值对负载进行供电。
在一种可能的实现方式中，处理模块，具体用于若所述电源系统在预设时段内处于欠压状态的次数大于或等于预设次数，则确定当前的电网为弱电网。
在一种可能的实现方式中，处理模块，还用于根据所述电源系统的母线电压和所述实际输入电压中的至少一种，确定所述电源系统是否处于欠压状态。
在一种可能的实现方式中，处理模块，具体用于若所述母线电压小于或等于第一欠压阈值，和/或，所述实际输入电压小于或等于第二欠压阈值，则确定所述电源系统处于欠压 状态。
在一种可能的实现方式中，处理模块，具体用于将所述电源系统的限制电流值调整至第一限制电流值，以及获取所述第一限制电流值与预设调整限制电流值的加和，且将所述第一限制电流值与预设调整限制电流值的加和作为第二限制电流值；根据所述电源系统工作在所述第二限制电流值时的第一实际输入电压，确定所述目标限制电流值。
在一种可能的实现方式中，处理模块，具体用于执行如下步骤：
A、若所述电源系统在迭代周期t的实际输入电压大于或等于第二电压阈值，且所述迭代周期t的实际输入电压小于或等于第一电压阈值，则将迭代周期t的限制电流值作为所述目标限制电流值；否则，执行B或C；所述第一电压阈值大于所述第二电压阈值，当t＝1时，所述迭代周期t的实际输入电压为所述第一实际输入电压，t为大于或等于1的整数；
B、若所述迭代周期t的实际输入电压大于所述第一电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的加和，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的加和作为下一迭代周期的限制电流值；
C、若所述迭代周期t的实际输入电压小于第二电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的差值，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的差值作为下一迭代周期的限制电流值；
D、获取所述电源系统工作在下一迭代周期的限制电流值时的实际输入电压，并进入所述下一迭代周期，返回执行所述A。
在一种可能的实现方式中，处理模块，还用于若所述电源系统的实际输出电流小于所述目标限制电流值，则将所述电源系统的限制电流值调整至初始限制电流值。
在一种可能的实现方式中，处理模块，还用于若所述实际输入电压大于或等于第二欠压阈值，则将所述电源系统的限制电流值调整至初始限制电流值。
在一种可能的实现方式中，处理模块，具体用于判断所述电源系统是否包括储能模块，以及所述电源系统的实际输入电压是否大于或等于第三电压阈值，且若所述电源系统包括所述储能模块，且所述电源系统的实际输入电压大于或等于所述第三电压阈值，则根据所述电源系统的实际输入电压确定所述目标限制电流值。
在一种可能的实现方式中，处理模块，还用于若当前的电网为弱电网，则输出告警信息，所述告警信息用于指示当前电网为弱电网。
第三方面，本申请实施例提供一种供电装置，所述供电装置包括：处理器、存储器；其中，存储器用于存储计算机可执行程序代码，程序代码包括指令；当处理器执行指令时，指令使所述供电装置执行如第一方面或第一方面的各可能的设计所提供的方法。
第四方面，本申请实施例提供一种供电装置，包括用于执行以上第一方面或第一方面各可能的设计所提供的方法的单元、模块或电路。该供电装置可以为整流器，也可以为应用于整流器的一个模块，例如，可以为应用于整流器的芯片。
第五方面，本申请实施例提供一种供电装置(例如芯片)，所述供电装置上存储有计算机程序，在所述计算机程序被所述供电装置执行时，实现如第一方面或第一方面的各可能的设计所提供的方法。
第六方面，本申请实施例提供一种包含指令的计算机程序产品，当其在计算机上 运行时，使得计算机执行上述第一方面或第一方面的各种可能的设计中的方法。
第七方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的各种可能的设计中的方法。
第八方面，本申请实施例提供一种电源系统，包括如上述第二方面或各种可能的设计中的供电装置和监控装置，所述监控装置用于监测所述供电装置。
第九方面，本申请实施例提供一种供电系统，包括如上述第八方面中的电源系统、电网、以及电力变压器，其中，所述电网通过所述电力变压器为所述电源系统进行供电。
应理解，本申请实施例中第三方面至第九方面的实现原理和技术效果可以参照第一方面，在此不再赘述。
附图说明
图1为本申请实施例提供的供电方法适用的场景示意图；
图2为一种供电示意图；
图3为本申请实施例提供的供电方法的一实施例的流程示意图；
图4为本申请实施例提供的供电方法的另一实施例的流程示意图；
图5为本申请实施例提供的供电方法的另一实施例的流程示意图；
图6为本申请实施例提供的供电方法的另一实施例的流程示意图；
图7为本申请实施例提供的供电方法的另一实施例的流程示意图。
图8为本申请实施例提供的一种供电装置的结构示意图；
图9为本申请实施例提供的又一种供电装置的结构示意图。
具体实施方式
图1为本申请实施例提供的供电方法适用的场景示意图。如图1所示，该场景中可以包括电网、电力变压器、电源系统和负载。其中，电力变压器可以将电网输出的电压进行变压，并将变压后的电压通过输电线缆传输至电源系统，进而实现电源系统为负载供电。电源系统可以包括整流器和电池，整流器可以将来自电网的交流电流转换为直流电流，且将直流电流输出至负载，以为负载进行供电。其中，整流器也可以将转换的直流电输出至电池，以为电池充电。电池在充电状态时可以存储电能，以在电源系统掉电或者电源系统的电压不足时，进行放电为负载供电。本申请实施例中，负载可以但不限于为射频拉远单元(remote radio unit，RRU)，负载还可以包括基带处理单元(building base band unit，BBU)。应理解，上述图1所示的供电场景中还可包括其他设备，例如电源系统还可以包括监控装置等，本申请实施例中对此不做限定，其中，本申请实施例中的供电方法也适用于不包括电池的电源系统中，上述图1中以电源系统包括电池为例进行说明。
但电源系统部署在山区、高速路等场景中时，可能存在电源系统与电力变压器的距离较远的情况。如图1所示，电源系统与电力变压器之间的距离大于1KM。当电源系统距离电压变压器的距离较远时，电力变压器与电源系统之间的输电线缆的阻抗异常偏大，相 应的，电力变压器与电源系统之间的输电线缆的压降过大，从而导致电源系统出现输入欠压。其中，欠压可以理解为电源系统的输入电压过低，不满足电源系统正常工作的最低要求。当电源系统出现输入欠压时，会导致电源系统进行自我保护，进而造成电源系统中的组件(整流器和监控装置等)反复重启，进而导致RRU等负载无法正常工作。
图2为一种供电示意图。如图2所示，为了解决上述问题，可以在电源系统与电力变压器之间增加设置电力变压器，以减短电源系统与电力变压器之间的输电线缆的长度，进而降低电力变压器与电源系统之间的输电线缆的阻抗，以避免电源系统输入欠压。示例性的，如在电源系统与电力变压器之间每隔500m增加设置一个电力变压器。但该种方法所需的成本高，且若上述问题多出现在山区场景时，电力变压器体积大且重量重，安装困难大。
为了不增设额外的设备，目前还提供了由工程师在电源系统的现场人工修改电源系统的限制电流值的技术方案。其中，该限制电流值指的是电源系统能够输出的最大的电流。示例性的，工程师通常根据经验，将电源系统的限制电流值调整至能够满足般负载正常工作的限制电流值，如限制电流值可以为1个RRU正常工作时所需的电流，其中，该1个RUU为主要负载。对应的，因为电源系统中限制了输出电流(即限制电流值)，从而限制了输出功率，间接地也限制了输入功率。当限制电源系统的电流值后的输入功率小于电网能提供的功率(电压乘电流)时，电源系统的输入电压就不会被拉低到电源系统的欠压保护点以下，进而电源系统就能正常工作，避免了电源系统出现输入欠压。但该种技术方案需要工程师上站(即去电源系统所在站点)手动调节限制电流值，人工上站调节的成本很高，且修改限制电流值以后就无法改变，即使电网恢复正常，也不能自动恢复初始限制电流值，相当于强行限制了电源系统的供电能力，仅为主要负载进行供电，在负载较重的情况下，可能导致负载因供电不足而掉电。示例性的，如目前有12个RUU需要供电，但电源系统输出的电流不足以为这些负载供电，电源系统中的电池就会放电，造成掉电。且若电池长期处于过放状态，则电池报废。
为了解决上述问题，本申请实施例提供了一种供电方法，电源系统可以根据输入电压，自适应地调整电源系统的限制电流值，进而能够在为负载提供电能的同时，避免电源系统出现欠压。示例性的，当电网正常，如可以为电源系统提供较大的输入电压时，可以将电源系统的限制电流值调整为电源系统常用的数值，进而使得电源系统可以为负载充电以及为电源系统中的电池充电，当电网为弱电网，如电源系统的输入电压较小时，可以将电源系统的限制电流值调整为较低的数值，进而使得电源系统可以输出较小的输出电流，以保证能够在为负载提供电能的同时，避免电源系统出现欠压。另外，本申请实施例提供的供电方法中，未改变目前电源系统的硬件结构，电源系统可以根据输入电压自动调整电源系统的限制电流值，提高了电源系统的智能化，保证了电池的使用寿命，且该供电方法全程无人工参与，降低了运维难度和成本。
应理解，本申请实施例提供的方法不仅可以应用在上述图1所示的供电场景中，也可以适用于电源系统的输入电压较小的场景中，本申请实施例对此不作限制。应理解，本申请实施例中执行下述供电方法的执行主体可以为供电装置，该供电装置可以为电源系统，或者电源系统中的芯片，或目前电源系统中包含的整流器或其他模块，或者目前电源系统中包含的整流器或其他模块中的芯片，下述实施例中以执行主体为整流器为例进行说明。
下面结合具体的实施例对本申请实施例的供电方法进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。图3为本申请实施例提供的供电方法的一实施例的流程示意图。如图3所示，本申请实施例提供的供电方法可以包括：
S301，判断当前的电网是否为弱电网。
S302，若当前的电网为弱电网，则根据电源系统的实际输入电压确定目标限制电流值。
S303，基于目标限制电流值对负载进行供电。
上述S301中，由于各种外界因素的影响，电网输出的电压是可变的。影响因素可以为电网中的设备或线路的投切，或者电网中设备的老化等。电网为弱电网可以理解为电网输出的电压小于电压阈值。应理解，整流器可以确定当前的电网是否为弱电网。其中，本申请实施例中，整流器确定当前的电网是否为弱电网一种可能的实现方式为：如电网中可以包含有通信模块，电源系统中可以包括通信模块，整流器可以与电源系统中的通信模块连接。当电网输出的电压小于电压阈值时，电网可以通过其中的通信模块与电源系统中的通信模块交互，以达到通知整流器当前的电网为弱电网的目的。示例性的，如当电网输出的电压小于第一电压阈值时，电网可以通过其中的通信模块向与电源系统中的通信模块发送弱电网消息，该弱电网消息指示当前的电网为弱电网，当电源系统中的通信模块接收到该消息后，可以向整流器同步该消息。
或者，整流器确定电网是否为弱电网的另一种可能的实现方式为：整流器确定电源系统处于欠压状态时，可以确定当前的电网为弱电网。该种方式中，整流器可以根据电源系统的母线电压和实际输入电压中的至少一种，确定电源系统是否处于欠压状态。其中，电源系统的母线电压可以为整流器内部的功率因数校正(power factor correction，PFC)母线的电压。电源系统的实际输入电压可以为当前输入电源系统的电压。应理解，电源系统中可以包括监控装置，该监控装置可以监测电源系统的实际输入电压，监控装置获取电源系统的实际输入电压，可以将电源系统的实际输入电压发送给整流器，以使整流器得到电源系统的实际输入电压。
第一种方式：整流器可以根据电源系统的母线电压确定电源系统是否处于欠压状态。其中，若母线电压小于或等于第一欠压阈值，则整流器可以确定电源系统处于欠压状态。示例性的，第一欠压阈值可以为300V。应理解，不同类型的整流器可以设置不同的第一欠压阈值。第二种方式：整流器可以根据电源系统的实际输入电压确定电源系统是否处于欠压状态。其中，若实际输入电压小于或等于第二欠压阈值，则整流器确定电源系统处于欠压状态，示例性的，第二欠压阈值可以为70V，应理解，不同类型的电源系统可以设置不同的第二欠压阈值。第三种方式：整流器可以根据电源系统的母线电压和电源系统的实际输入电压，确定电源系统是否处于欠压状态。其中，若母线电压小于或等于第一欠压阈值，且实际输入电压小于或等于第二欠压阈值，则整流器确定电源系统处于欠压状态。应理解，该三种方式为本申请实施例中的示例说明。本申请实施例中的第一欠压阈值和第二欠压阈值可以预先设置，整流器中可以存储第一欠压阈值和第二欠压阈值。
因为电网输出的电压是变化的，因此电源系统的母线电压和电源系统的实际输入电压可以改变，因此本申请实施例中若电源系统一次处于欠压状态，就确定当前的电网为弱电 网可能不准确。示例性的，若电网输出的电压突然大幅度降低，但立刻又回升了，此时整流器确定当前的电网为弱电网，则可能会限制电源系统调整的输出电流。因此本申请实施例中为了提高整流器判断当前的电网是否为弱电网的准确性，可以采用下述可能的实现方式：若电源系统在预设时段内处于欠压状态的次数大于或等于预设次数，则整流器确定当前的电网为弱电网。示例性的，预设次数可以为9次，预设时段可以为3分钟。其中，如在3分钟内，电源系统处于欠压状态的次数大于或等于9次，则整流器确定当前的电网为弱电网。
上述S302中，若当前的电网为弱电网，整流器可以确定当前的电网的电压可能造成电源系统的反复重启。本申请实施例中，整流器可以根据电源系统的实际输入电压对电源系统的限制电流值进行调整，以避免电源系统为负载的供电不足出现欠压现象。限制电流值可以理解为电源系统能够输出的最大的电流值。本申请实施例中整流器可以根据电源系统的实际输入电压确定目标限制电流值，以便于整流器将电源系统的限制电流值调整至目标限制电流值。其中，电源系统工作在该目标限制电流值时可以为负载进行供电，且电源系统不会欠压重启。
在一种可能的实现方案中，整流器中可以存储有实际输入电压和目标限制电流值的对应关系，该对应关系可以为依据如上述图1所示的场景测试得到。应理解，与实际输入电压对应的目标限制电流值可以为：在负载一定的前提下，能够维持实际输入电压在预设范围内变化的最大电流。示例性的，如实际输入电压为150V，若预设范围为140V-160V，则若整流器调整限制电流值，可以使得实际输入电压在预设范围为140V-160V变化，则可以将整流器调整的该限制电流值作为目标限制电流值。其中，整流器在确定实际输入电压后，可以根据实际输入电压和目标限制电流值的对应关系，确定目标限制电流值。
应理解，本申请实施例中依据如上述图1所示的场景测试得到上述对应关系的方式可以为：在负载以及实际输入电压一定时，整流器可以改变限制电流值，进而记录实际输入电压的变化，进而将限制电流值中最大的限制电流值作为目标限制电流值。采用该种方式，可以获取不同实际输入电压对应的目标限制电流值。
应注意，在该种可能的实现方式中，整流器中可以存储有实际输入电压、目标限制电流值以及负载的对应关系。因为在实际输入电压相同，但负载不同时，不同的目标限制电流值对实际输入电压的影响不同，因此，本申请实施例中整流器可以存储实际输入电压、目标限制电流值以及负载的对应关系。其中，该对应关系也可以为在依据如上述图1所示的场景测试。示例性的，在负载以及实际输入电压一定时，整流器可以改变限制电流值，进而记录实际输入电压的变化，进而将限制电流值中最大的限制电流值作为目标限制电流值。采用该种方式，可以获取不同负载以及不同实际输入电压对应的目标限制电流值。在该种方式中，整流器在确定实际输入电压后，可以根据实际输入电压、目标限制电流值和负载的对应关系，确定目标限制电流值。应注意，本申请实施例中整流器可以将处于工作状态的负载作为上述计算得到目标限制电流值的参数。
在另一种可能的实现方案中，整流器可以根据实际输入电压和电源系统的负载，得到目标限制电流值。本申请实施例中为了保证电源系统在弱电网时不反复重启，因此可以以保证为负载中的主要负载进行供电即可。其中，整流器可以根据实际输入电压和负载中的主要负载，得到目标限制电流值。应理解，本申请实施例中的主要负载为预先设定的，当 整流器确定处于工作状态的负载时，可以确定处于工作状态的负载中的主要负载，进而整流器可以将主要负载所需的电流作为目标限制电流值。
上述S303中，整流器在得到目标限制电流值后，可以调整电源系统的限制电流值至目标限制电流值，进而基于该目标限制电流值对负载进行供电。应理解，整流器将电源系统的限制电流值至目标限制电流值后，整流器可以根据实际输入电压，对输出电流进行调整，以保证输出电流不高于该目标限制电流值。应理解，本申请实施例中整流器依据目标限制电流值对负载进行供电的方式可以参照目前技术方案中的相关描述，在此不做赘述。
本申请实施例提供一种供电方法，该方法包括判断当前的电网是否为弱电网，若当前的电网为弱电网，则根据电源系统的实际输入电压确定目标限制电流值，且基于目标限制电流值对负载进行供电。本申请实施例中，电源系统可以根据输入电压，自适应地调整电源系统的限制电流值，进而能够在为负载提供电能的同时，避免电源系统出现欠压。如输入电压较大时，可以将电源系统的限制电流值调整为较高的数值，进而使得电源系统可以输出较大的输出电流，以保证高效率地为负载充电，当输入电压较小时，将电源系统的限制电流值调整为较低的数值，进而使得电源系统可以输出较小的输出电流，以保证能够在为负载提供电能的同时，避免电源系统出现欠压。
上述实施例中描述了整流器可以根据预先存储的对应关系(如实际输入电压和目标限制电流值的对应关系，或实际输入电压、目标限制电流值以及负载的对应关系)，得到目标限制电流值，上述方式中，预设关系是在测试场景中获取的。在实际应用过程中，因为电源系统中的组件的使用时长或其他因素，可能该对应关系会与实际应用不匹配。或者，上述实施例中描述了整流器可以根据实际输入电压和负载中的主要负载，得到目标限制电流值，该种方式虽然能够保证电源系统在弱电网时不反复重启，但是不能保证为所有的负载均进行供电。因此，为了解决这两个问题，本申请实施例在上述实施例的基础上提供的供电方法中，整流器可以根据实际输入电压，在对限制电流值调整的过程中确定目标限制电流值，使得供电方法更加贴合实际应用场景，且保证为每个负载进行供电。
图4为本申请实施例提供的供电方法的另一实施例的流程示意图。如图4所示，本申请实施例提供的供电方法可以包括：
S401，判断当前的电网是否为弱电网。
S402，若当前的电网为弱电网，则将电源系统的限制电流值调整至第一限制电流值。
S403，获取第一限制电流值与预设调整限制电流值的加和，且将第一限制电流值与预设调整限制电流值的加和作为第二限制电流值。
S404，根据电源系统工作在第二限制电流值时的第一实际输入电压，确定目标限制电流值。
S405，基于目标限制电流值对负载进行供电。
本申请实施例中的S401和S405可以参照上述实施例S301和S303中的相关描述，在此不做赘述。
上述S402中，本申请实施例中，若当前的电网为弱电网，则整流器可以不断调整电源系统的限制电流值，以使电源系统的限制电流值达到合适的限制电流值，即目标限制电流值。其中，整流器在调整电源系统的限制电流值的过程中，可以先将电源系统的限制电 流值调整至第一限制电流值。应理解，第一限制电流值可以为电源系统支持的最低的限制电流值，该最低限制电流值可以为预定义的。示例性的，该电源系统的第一限制电流值可以为1A。可选的，该第一限制电流值可以与电源系统的属性有关，电源系统的属性可以包括整流器的类型、电池的类型、容量等。
上述S403中，应注意，本申请实施例中可以预先设置预设调整限制电流值，该预设调整限制电流值可以为整流器在调整后的电源系统的限制电流值的基础上，增加或减少的限制电流值的数值。其中，在整流器将电源系统的限制电流值调整至第一限制电流值后，可以逐渐增加限制电流值。整流器可以获取第一限制电流值与预设调整限制电流值的加和，并将第一限制电流值与预设调整限制电流值的加和作为第二限制电流值，且将电源系统的限制电流值调整至该第二限制电流值。
示例性的，如预设调整限制电流值为0.5A，整流器可以在第一限制电流值可以为1A的基础上，获取第一限制电流值与预设调整限制电流值之和为1.5A，并将该1.5A作为第二限制电流值，整流器可以将电源系统的限制电流值调整至1.5A。
上述S404中，本申请实施例中，整流器可以在调整第一限制电流值至第二限制电流值后，根据电源系统的实际输入电压，确定是否对电源系统的第二限制电流值进行再调整。本申请实施例中，整流器可以依据将第一限制电流值调整至第二限制电流值后电源系统的实际输入电压，以及预设范围，确定是否对电源系统的第二限制电流值进行再调整。其中，本申请实施例中可以预先设置实际输入电压的预设范围，当电源系统的实际输入电压处于该预设范围内时，可以确定电源系统不会重复重启，则不对电源系统的限制电流值进行再调整。其中，当电源系统的实际输入电压处于该预设范围内时，可以对电源系统的限制电流值进行再调整。
其中，若电源系统工作在第二限制电流值时的实际输入电压大于第一电压阈值，则整流器可以确定第二限制电流值较小，可以将第二限制电流值往大调整。应理解，该第一电压阈值可以为实际输入电压的预设范围的上限(或上边界)。本申请实施例中，整流器可以获取第二限制电流值与预设调整限制电流值之和，将第二限制电流值与预设调整限制电流值之和作为第三限制电流值，进而将电源系统的限制电流值调整至第三限制电流值。与该步骤类似的，若电源系统工作在第三限制电流值时的实际输入电压大于第一电压阈值，则整流器可以继续对该第三限制电流值进行调整，调整方式可以参照上述对第二限制电流值的调整方式。
其中，若电源系统工作在第二限制电流值时的实际输入电压小于第二电压阈值，则整流器可以确定第二限制电流值较大，需要将第二限制电流值往小调整。应理解，该第二电压阈值可以为实际输入电压的预设范围的下限(或下边界)，也就是说，本申请实施例中的第二电压阈值小于第一电压阈值。本申请实施例中，整流器可以获取第二限制电流值与预设调整限制电流值的差值，将第二限制电流值与预设调整限制电流值的差值作为第三限制电流值，进而将电源系统的限制电流值调整至该第三限制电流值。
应理解，上述整流器调整电源系统的限制电流值时，可以在预设时长内将限制电流值调整至第二限制电流值(或者第三限制电流值)，以避免限制电流值调整过快影响电源系统的稳定性。示例性的，预设时长可以为5s，整流器可以在5s内将电源系统的限制电流值从1A调整至1.5A。
其中，若电源系统工作在第二限制电流值时的实际输入电压大于或等于第二电压阈值，并且，小于或等于第一电压阈值，则可以确定电源系统的实际输入电压处于预设范围内，则不再对电源系统的限制电流值进行再调整，本申请实施例中可以将第二限制电流值作为目标限制电流值。
应注意，本申请实施例中整流器在预设时长内将限制电流值调整至第二限制电流值(或第三限制电流值)后，可以等待预设时长，再获取电源系统的实际输入电压，且将该实际输入电压作为电源系统工作在第二限制电流值(或第三限制电流值)时的实际输入电压。因为整流器在调整电源系统的限制电流值后，电源系统的实际输入电压可能会在短时间内发送变化，本申请实施例中为了得到稳定、准确的实际输入电压，可以等待预设时长获取电源系统的实际输入电压。示例性的，在整流器将在5s内将电源系统的限制电流值从1A调整至1.5A后，等待2s电源系统的实际输入电压为155V，则可以将155V作为电源系统工作在第二限制电流值(或第三限制电流值)时的实际输入电压。
换句话说，本申请实施例中整流器根据电源系统工作在第二限制电流值时的第一实际输入电压，确定目标限制电流值可以看做迭代过程。该迭代过程可以如下步骤所示：
A、若电源系统在迭代周期t的实际输入电压大于或等于第二电压阈值，且迭代周期t的实际输入电压小于或等于第一电压阈值，则将迭代周期t的限制电流值作为目标限制电流值；否则，执行B或C；第一电压阈值大于第二电压阈值，当t＝1时，迭代周期t的实际输入电压为第一实际输入电压，t为大于或等于1的整数。
B、若迭代周期t的实际输入电压大于第一电压阈值，则获取迭代周期t的限制电流值与预设调整限制电流值的加和，且将迭代周期t的限制电流值与预设调整限制电流值的加和作为下一迭代周期的限制电流值。
C、若迭代周期t的实际输入电压小于第二电压阈值，则获取迭代周期t的限制电流值与预设调整限制电流值的差值，且将迭代周期t的限制电流值与预设调整限制电流值的差值作为下一迭代周期的限制电流值。
D、获取电源系统工作在下一迭代周期的限制电流值时的实际输入电压，并进入下一迭代周期，返回执行A。
t为大于或等于1的整数，在步骤A中，当t为1时，迭代周期1的实际输入电压为第一实际输入电压。若第一实际输入电压大于或等于第二电压阈值，且第一实际输入电压小于或等于第一电压阈值，则可以将该第二限制电流值作为目标限制限流值。其中，若第一实际输入电压大于第一电压阈值，则可以执行步骤B。或者若第一实际输入电压小于第二电压阈值，则可以执行步骤C。
在步骤B中，若第一实际输入电压大于第一电压阈值，则可以获取迭代周期1的限制电流值(第二限流值)与预设调整限制电流值的加和，且将第二限流值与预设调整限制电流值的加和作为下一迭代周期的限制电流值，如第三限流值。
在步骤C中，若第一实际输入电压小于第二电压阈值，则获取迭代周期1的限制电流值(第二限流值)与预设调整限制电流值的差值，且将第二限流值与预设调整限制电流值的差值作为下一迭代周期的限制电流值，如第三限流值。
在步骤D中，整流器可以获取电源系统工作在第三限流值时的实际输入电压(如第二输入电压)，并进入下一迭代周期，返回执行A。其中，返回执行A，即判断第二输入 电压与第一电压阈值、第二电压阈值的大小关系，进而执行上述步骤A、步骤B或步骤C。
下述举例说明整流器调整电源系统的限制电流值的过程。示例性的，上述的实际输入电压的预设范围可以为150V-160V，则上述的第一电压阈值可以为160V，第二电压阈值可以为150V。其中，整流器可以先将电源系统的限制电流值调整至第一限制电流值，如1A，整流器在将电源系统的限制电流值调整至1A后，可以在5s内将电源系统的限制电流值从1A调整至1.5A，该1.5A为第二限制电流值。等待2s获取电源系统的实际输入电压，若该实际输入电压大于160V，则整流器可以继续在5s内将电源系统的限制电流值从1.5A调整至2A，该2A为第三限制电流值，等待2s获取电源系统的实际输入电压，若该实际输入电压仍大于160V，则整流器可以继续调高该电源系统的限制电流值。反之，若调整限制电流值后电源系统的输入电压小于150V，则可以采用上述步骤C中的方式，减小调整限制电流值，以进行动态调整。
若整流器5s内将电源系统的限制电流值从1.5A调整至2A后，等待2s获取电源系统的实际输入电压小于150V，则整流器可以在5s内将电源系统的限制电流值从2A调整至1.5A，等待2s获取电源系统的实际输入电压，若该实际输入电压位于150V-160V的预设范围内，则可以将1.5A作为目标限制电流值。也就是说，因为随着电源系统从第一限制电流值开始增加，实际输入电压呈现先增大后减小的趋势，上述实施例中可以将实际输入电压达到最大值时的限制电流值作为目标限制电流值。
本申请实施例中，整流器可以根据实际输入电压，可以动态调整电源系统的限制电流值，进而将限制电流值调整至目标限制电流值，该种方法更加贴合实际应用场景，充分根据实时的实际输入电压为负载充电，能够最大化利用电网的能力，且提高充电效率。
如上图1所示，本申请实施例中的电源系统可以包括电池，当电源系统处于欠压状态时，电池也可以向负载放电，因此电池也可以提供一部分负载电流，以为负载进行充电。当电源系统包括电池时，若电源系统启动上述实施例中自动调整限制电流值的技术方案，在限制电流值减小以后，电源系统给电池充电的电流减小，主要保证给负载的电流，以保证电源系统的供电稳定，同时还以比较小的电流给电池充电，电池也可以正常充电，只是比不限制限制电流值时的充电速度慢，但是电源系统不至于崩溃(不断重启)。若电源系统不限制限制电流值，那么电源系统给电池充电的电流加大，则电源系统的负载电流(为电池和负载充电的电流)就超出了电网的能力，导致电源系统欠压反复重启，负载无法稳定供电，电池也无法充电，时间长以后电池长期欠压就坏了，无法再利用。
在该种情况下，因为随着电源系统从最低限制电流值开始增加，实际输入电压可以呈现先增大后减小的趋势，上述实施例中描述了将实际输入电压达到最大值时的限制电流值作为目标限制电流值。若在整流器开始调整电源系统的限制电流值时，电源系统的实际输入电压就很低(如150V)，则继续增加电源系统的限制电流值，则会造成电源系统的实际输入电压继续降低，造成电源系统出现欠压。也就是说，当输入电压本身就很低时，电源系统可调整的限制电流值的范围就很有限，因此本申请实施例中为了保证电源系统调整限制电流值的准确性，可以在实际输入电压位于一合适电压范围内时，整流器对电源系统的限制电流值增大或减少不会导致电源系统出现欠压，且还能调整电源系统的限制电流值至目标限制电流值。该种方法能够提高电源系统的稳定性，增加供电方法的稳定性。
图5为本申请实施例提供的供电方法的另一实施例的流程示意图。如图5所示，本申请实施例中，上述S402可以替换为S402'和S403'：
S402'，若当前的电网为弱电网，则判断电源系统是否包括储能模块，且电源系统的实际输入电压是否大于或等于第三电压阈值。
S403'，若电源系统包括储能模块，且电源系统的实际输入电压大于或等于第三电压阈值，则将电源系统的限制电流值调整至第一限制电流值。
上述S402'中，电源系统的储能模块可以为上述图1中的电池，或者其他储能元件，如电容等，本申请实施例对此不做限制。其中，上述实施例中的提到的监控装置可以监测电源系统中的各组件的工作状态，监控装置中也可以监测电源系统中是否包含有储能模块。可以想到的是，本申请实施例中，整流器可以与监控装置交互确定电源系统是否包括储能模块。示例性的，如整流器可以在监控装置中读取储能模块的状态，若储能模块的状态为在位状态，则确定电源系统包括储能模块。另外，本申请实施例中还会判断实际输入电压大于或等于第三电压阈值，该第三电压阈值可以为经验设定值，如170V。
上述S403'中，若电源系统包括储能模块，且电源系统的实际输入电压大于或等于第三电压阈值，则本申请实施例中整流器执行上述实施例中调整电源系统的限制电流值的动作。应理解，S403'中的“将电源系统的限制电流值调整至第一限制电流值”可以参照上述实施例S402的相关描述。
应理解，本申请实施例中在电源系统包括储能模块时，还需要满足实际输入电压大于或等于第三电压阈值的目的在于：避免整流器在调整电源系统的限制电流值的过程中，电源系统出现欠压，保证了电源系统的供电稳定性。
在上述实施例的基础上，图6为本申请实施例提供的供电方法的另一实施例的流程示意图。如图6所示，本申请实施例提供的供电方法可以包括：
S601，判断当前的电网是否为弱电网。
S602，若当前的电网为弱电网，则输出告警信息，且根据电源系统的实际输入电压确定目标限制电流值，告警信息用于指示当前电网为弱电网。
S603，基于目标限制电流值对负载进行供电。
S604，若当前的电网不为弱电网或负载变小，则将电源系统的限制电流值调整至初始限制电流值。
本申请实施例的S601、S603中的实施方式可以参照上述实施例S301、S303中的相关描述，在此不做赘述。
上述S602中，若当前的电网为弱电网，则整流器可以输出告警信息。其中，告警信息用于指示当前电网为弱电网。本申请实施例中，整流器上可以设置有显示模块、告警灯或蜂鸣器中的一种或多种。整流器输入告警信息的方式可以为整流器控制显示模块显示“弱电网”等文字信息。或者，整流器可以打开告警灯，或者整流器可以控制蜂鸣器打开，发出蜂鸣声。或者，本申请实施例中整流器还可以通经过通信模块将告警信息发送至用户的终端设备等。本申请实施例对输出告警信息的方式不做限制，显示模块、告警灯或蜂鸣器为示例说明。
上述S604中，若当前电网不为弱电网，则整流器可以将电源系统的限制电流值调整 至初始限制电流值。其中，初始限制电流值可以理解为整流器未调整限制电流值之前的电源系统的限制电流值。应理解，整流器确定当前电网不为弱电网的方式可以为：若电源系统在预设时段内处于欠压状态的次数小于预设次数，则确定当前的电网不为弱电网。或者，若实际输入电压大于或等于第二欠压阈值，则确定当前的电网不为弱电网。应理解，第二欠压阈值可以理解为电源系统正常工作时所需的电压如220V，或者其他预先设定的电压值。
或者，当实际输出电流小于目标限制电流值时，即电源系统的负载变小，此时不必限制电源系统的限制电流值也不会造成电源系统出现欠压。其中，若实际输出电流小于目标限制电流值，则确定当前的电网不为弱电网。本申请实施例中，当前电网不为弱电网时，整流器将电源系统的限制电流值调整至初始限制电流值的目的在于使得电源系统可以以最大充电电压(即电源系统的输出电压)为负载充电。
应理解，本申请实施例中，可以在电网在预设时长内均不为弱电网时，整流器可以将电源系统的限制电流值调整至初始限制电流值。示例性的，如在预设时长内的实际输入电压大于或等于第二欠压阈值，则确定当前的电网不为弱电网，或者在预设时长内的实际输出电流小于目标限制电流值时，则确定当前的电网不为弱电网。这样做的目的是为了避免因为电网突然的电压变化导致整流器的误判，进而提高供电方法的准确性和稳定性。
本申请实施例中，整流器在将电源系统的限制电流值调整至初始限制电流值时，还可以包括消除若告警信息，以指示当前电网不为弱电网。示例性的，如关闭显示“弱电网”等文字信息。或者，整流器关闭告警灯，或者整流器关闭蜂鸣器。
本申请实施例中，可以在电网为弱电网时输出告警信息，以提醒当前电网为弱电网。另外整流器还可以在当前电网不为弱电网时调整电源系统的限制电流值至初始限制电流值，使得电源系统可以以最大充电电压为负载充电，提高电源系统的智能化。
下述实施例中以实际应用过程中的操作过程说明本申请实施例中的供电方法。图7为本申请实施例提供的供电方法的另一实施例的流程示意图。如图7所示，本申请实施例提供的供电方法可以包括：
S701，若在3分钟内，电源系统处于欠压状态的次数大于或等于9次，则整流器确定当前的电网为弱电网。
S702，输出告警信息。
S703，判断电源系统是否包括储能模块，且电源系统的实际输入电压是否大于或等于170V。若是，则执行S704，若否，则执行S709。
S704，将电源系统的限制电流值调整至第一限制电流值1A。
S705，在5s内将电源系统的限制电流值从1A调整至1.5A。
S706，若电源系统工作在限制电流值为1.5A时的实际输入电压大于160V，则继续增加电源系统的限制电流值，直至电源系统工作在限制电流值时的实际输入电压小于或等于160V，以及大于或等于150V。
S707，若电源系统工作在限制电流值为1.5A时的实际输入电压小于150V，则继续减小电源系统的限制电流值，直至电源系统工作在限制电流值时的实际输入电压小于或等于160V，以及大于或等于150V。
S708，若1分钟内，电源系统的实际输入电压大于预设电压，或者电源系统的实际输出电流小于目标限制电流值，则将电源系统的限制电流值调整至初始限制电流值，且消除告警信息。
S709，停止。
应理解，上述S702和S703可以同时执行，二者没有先后顺序的区分。上述S706和S707也可以同时执行。
本申请实施例中的S703中，若电源系统包括储能模块，且电源系统的实际输入电压大于或等于170V，则整流器执行本申请实施例中调整电源系统的限制电流值的动作。
应注意，整流器执行上述S706时，若电源系统工作在限制电流值时的实际输入电压小于150V，则可以执行S707中的步骤。同理的，上述S707中，若电源系统工作在限制电流值时的实际输入电压大于160V，则可以执行S706中的步骤。也就是说，本申请实施例中，当电源系统工作在限制电流值的实际输入电压小于150V时，可以执行减小电源系统的限制电流值的操作，当电源系统工作在限制电流值的实际输入电压大于160V时，可以执行增加电源系统的限制电流值的操作，直至电源系统工作在限制电流值时的实际输入电压小于或等于160V，以及大于或等于150V。
应理解，本申请实施例的技术效果可以参照上述实施例中的相关描述。
图8为本申请实施例提供的一种供电装置的结构示意图。本实施例所涉及的供电装置可以为前述所说的整流器，也可以为应用于整流器的芯片，或者也可以为应用于电源系统或电源系统中的其他装置或模块。该供电装置可以用于执行上述方法实施例中整流器的动作。如图8所示，该供电装置可以包括：处理模块801和供电模块802。其中，
处理模块801，用于判断当前的电网是否为弱电网，且若当前的电网为弱电网，则根据电源系统的实际输入电压确定目标限制电流值。
供电模块802，用于基于目标限制电流值对负载进行供电。
在一种可能的实现方式中，处理模块801，具体用于若电源系统在预设时段内处于欠压状态的次数大于或等于预设次数，则确定当前的电网为弱电网。
在一种可能的实现方式中，处理模块801，还用于根据电源系统的母线电压和实际输入电压中的至少一种，确定电源系统是否处于欠压状态。
在一种可能的实现方式中，处理模块801，具体用于若母线电压小于或等于第一欠压阈值，和/或，实际输入电压小于或等于第二欠压阈值，则确定电源系统处于欠压状态。
在一种可能的实现方式中，处理模块801，具体用于将电源系统的限制电流值调整至第一限制电流值，且获取第一限制电流值与预设调整限制电流值的加和，且将第一限制电流值与预设调整限制电流值的加和作为第二限制电流值；根据电源系统工作在第二限制电流值时的第一实际输入电压，确定目标限制电流值。
在一种可能的实现方式中，处理模块801，具体用于执行如下步骤：
A、若电源系统在迭代周期t的实际输入电压大于或等于第二电压阈值，且迭代周期t的实际输入电压小于或等于第一电压阈值，则将迭代周期t的限制电流值作为目标限制电流值；否则，执行B或C；第一电压阈值大于第二电压阈值，当t＝1时，迭代周期t的实际输入电压为第一实际输入电压，t为大于或等于1的整数；
B、若迭代周期t的实际输入电压大于第一电压阈值，则获取迭代周期t的限制电流值与预设调整限制电流值的加和，且将迭代周期t的限制电流值与预设调整限制电流值的加和作为下一迭代周期的限制电流值；
C、若迭代周期t的实际输入电压小于第二电压阈值，则获取迭代周期t的限制电流值与预设调整限制电流值的差值，且将迭代周期t的限制电流值与预设调整限制电流值的差值作为下一迭代周期的限制电流值；
D、获取电源系统工作在下一迭代周期的限制电流值时的实际输入电压，并进入下一迭代周期，返回执行A。
在一种可能的实现方式中，处理模块801，还用于若电源系统的实际输出电流小于目标限制电流值，则将电源系统的限制电流值调整至初始限制电流值。
在一种可能的实现方式中，处理模块801，还用于若实际输入电压大于或等于第二欠压阈值，则将电源系统的限制电流值调整至初始限制电流值。
在一种可能的实现方式中，处理模块801，具体用于判断电源系统是否包括储能模块，以及电源系统的实际输入电压是否大于或等于第三电压阈值；若电源系统包括储能模块，且电源系统的实际输入电压大于或等于第三电压阈值，则根据电源系统的实际输入电压确定目标限制电流值。
在一种可能的实现方式中，处理模块801，还用于若当前的电网为弱电网，则输出告警信息，告警信息用于指示当前电网为弱电网。
本申请实施例提供的供电装置，可以执行上述方法实施例中整流器的动作，其实现原理和技术效果类似，在此不再赘述。
需要说明的是，应理解以上处理模块可以以软件通过处理元件调用的形式实现；也可以以硬件的形式实现。例如，处理模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上处理模块的功能。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个专用集成电路(application specific integrated circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(central processing unit，CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
图9为本申请实施例提供的又一种供电装置的结构示意图。如图9所示，该供电装置可以为上述实施例中的整流器，该供电装置可以包括：处理器901(例如CPU)、存储器902。存储器902可能包含高速随机存取存储器(random-access memory，RAM)，也可能还包括非易失性存储器(non-volatile memory，NVM)，例如至少一个磁盘存储器，存储器902中可以存储各种指令，以用于完成各种处理功能以及实现本申请的方法步骤。可选的，本申请涉及的供电装置还可以包括：通信总线903以及通信端口904。通信总线903 用于实现元件之间的通信连接。上述通信端口904用于实现供电装置与其他外设之间进行连接通信。在本申请实施例中，上述存储器902用于存储计算机可执行程序代码，程序代码包括指令；当处理器901执行指令时，指令使供电装置的处理器901执行上述方法实施例中终端设备的处理动作，其实现原理和技术效果类似，在此不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
本申请实施例还提供一种电源系统，该电源系统包括如上述实施例所述的供电装置(如整流器)和监控装置，还可以包括电池或其他储能模块等。该电源系统可如上述图1或图2所示的电源系统所示。
本申请实施例提供一种供电系统，该供电系统可以包括如上述所述的电源系统、电网、以及电力变压器等。其中，所述电网可以通过所述电力变压器为所述电源系统进行供电。该供电系统可如上述图1或图2所示的供电系统。
本文中的术语“多个”是指两个或两个以上。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系；在公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。
可以理解的是，在本申请的实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施例的实施过程构成任何限定。

Claims (24)

  1. 一种供电方法，用于电源系统，所述电源系统通过外接电网对负载进行供电，其特征在于，所述供电方法包括：
    判断当前的电网是否为弱电网；
    若当前的电网为弱电网，则根据所述电源系统的实际输入电压确定目标限制电流值；
    基于所述目标限制电流值对所述负载进行供电。
  2. 根据权利要求1所述的方法，其特征在于，所述判断当前的电网是否为弱电网，包括：
    若所述电源系统在预设时段内处于欠压状态的次数大于或等于预设次数，则确定当前的电网为弱电网。
  3. 根据权利要求2所述的方法，其特征在于，还包括：
    根据所述电源系统的母线电压和所述实际输入电压中的至少一种，确定所述电源系统是否处于欠压状态。
  4. 根据权利要求3所述的方法，其特征在于，所述根据所述电源系统的母线电压和所述实际输入电压中的至少一种，确定所述电源系统是否处于欠压状态，包括：
    若所述母线电压小于或等于第一欠压阈值，和/或，所述实际输入电压小于或等于第二欠压阈值，则确定所述电源系统处于欠压状态。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述根据所述电源系统的实际输入电压确定目标限制电流值，包括：
    将所述电源系统的限制电流值调整至第一限制电流值；
    获取所述第一限制电流值与预设调整限制电流值的加和，且将所述第一限制电流值与预设调整限制电流值的加和作为第二限制电流值；
    根据所述电源系统工作在所述第二限制电流值时的第一实际输入电压，确定所述目标限制电流值。
  6. 根据权利要求5所述的方法，其特征在于，所述根据所述电源系统工作在所述第二限制电流值时的第一实际输入电压，确定所述目标限制电流值，包括：
    A、若所述电源系统在迭代周期t的实际输入电压大于或等于第二电压阈值，且所述迭代周期t的实际输入电压小于或等于第一电压阈值，则将迭代周期t的限制电流值作为所述目标限制电流值；否则，执行B或C；所述第一电压阈值大于所述第二电压阈值，当t＝1时，所述迭代周期t的实际输入电压为所述第一实际输入电压，t为大于或等于1的整数；
    B、若所述迭代周期t的实际输入电压大于所述第一电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的加和，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的加和作为下一迭代周期的限制电流值；
    C、若所述迭代周期t的实际输入电压小于第二电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的差值，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的差值作为下一迭代周期的限制电流值；
    D、获取所述电源系统工作在下一迭代周期的限制电流值时的实际输入电压，并进入 所述下一迭代周期，返回执行所述A。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，还包括：
    若所述电源系统的实际输出电流小于所述目标限制电流值，则将所述电源系统的限制电流值调整至初始限制电流值。
  8. 根据权利要求1-6任一项所述的方法，其特征在于，还包括：
    若所述实际输入电压大于或等于第二欠压阈值，则将所述电源系统的限制电流值调整至初始限制电流值。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述根据所述电源系统的实际输入电压确定目标限制电流之前，还包括：
    判断所述电源系统是否包括储能模块，以及所述电源系统的实际输入电压是否大于或等于第三电压阈值；
    所述根据所述电源系统的实际输入电压确定目标限制电流，包括：
    若所述电源系统包括所述储能模块，且所述电源系统的实际输入电压大于或等于所述第三电压阈值，则根据所述电源系统的实际输入电压确定所述目标限制电流值。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，还包括：
    若当前的电网为弱电网，则输出告警信息，所述告警信息用于指示当前的电网为弱电网。
  11. 一种供电装置，设置于电源系统中，所述电源系统通过外接电网对负载进行供电，其特征在于，所述供电装置包括：
    处理模块，用于判断当前的电网是否为弱电网，且若当前的电网为弱电网，则根据电源系统的实际输入电压确定目标限制电流值；
    供电模块，用于基于所述目标限制电流值对负载进行供电。
  12. 根据权利要求11所述的装置，其特征在于，
    所述处理模块，具体用于若所述电源系统在预设时段内处于欠压状态的次数大于或等于预设次数，则确定当前的电网为弱电网。
  13. 根据权利要求12所述的装置，其特征在于，还包括：
    所述处理模块，还用于根据所述电源系统的母线电压和所述实际输入电压中的至少一种，确定所述电源系统是否处于欠压状态。
  14. 根据权利要求13所述的装置，其特征在于，所述处理模块，具体用于若所述母线电压小于或等于第一欠压阈值，和/或，所述实际输入电压小于或等于第二欠压阈值，则确定所述电源系统处于欠压状态。
  15. 根据权利要求11-14任一项所述的装置，其特征在于，
    所述处理模块，具体用于将所述电源系统的限制电流值调整至第一限制电流值，且获取所述第一限制电流值与预设调整限制电流值的加和，将所述第一限制电流值与预设调整限制电流值的加和作为第二限制电流值，以及根据所述电源系统工作在所述第二限制电流值时的第一实际输入电压，确定所述目标限制电流值。
  16. 根据权利要求15所述的装置，其特征在于，所述处理模块，具体用于
    A、若所述电源系统在迭代周期t的实际输入电压大于或等于第二电压阈值，且所述迭代周期t的实际输入电压小于或等于第一电压阈值，则将迭代周期t的限制电流值作为 所述目标限制电流值；否则，执行B或C；所述第一电压阈值大于所述第二电压阈值，当t＝1时，所述迭代周期t的实际输入电压为所述第一实际输入电压，t为大于或等于1的整数；
    B、若所述迭代周期t的实际输入电压大于所述第一电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的加和，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的加和作为下一迭代周期的限制电流值；
    C、若所述迭代周期t的实际输入电压小于第二电压阈值，则获取所述迭代周期t的限制电流值与所述预设调整限制电流值的差值，且将所述迭代周期t的限制电流值与所述预设调整限制电流值的差值作为下一迭代周期的限制电流值；
    D、获取所述电源系统工作在下一迭代周期的限制电流值时的实际输入电压，并进入所述下一迭代周期，返回执行所述A。
  17. 根据权利要求11-16任一项所述的装置，其特征在于，所述处理模块，还用于若所述电源系统的实际输出电流小于所述目标限制电流值，则将所述电源系统的限制电流值调整至初始限制电流值。
  18. 根据权利要求11-16任一项所述的装置，其特征在于，所述处理模块，还用于若所述实际输入电压大于或等于第二欠压阈值，则将所述电源系统的限制电流值调整至初始限制电流值。
  19. 根据权利要求11-18任一项所述的装置，其特征在于，所述处理模块，还用于判断所述电源系统是否包括储能模块，以及所述电源系统的实际输入电压是否大于或等于第三电压阈值；若所述电源系统包括所述储能模块，且所述电源系统的实际输入电压大于或等于所述第三电压阈值，则根据所述电源系统的实际输入电压确定所述目标限制电流值。
  20. 根据权利要求11-19任一项所述的装置，其特征在于，所述处理模块，还用于若当前的电网为弱电网，则输出告警信息，所述告警信息用于指示当前的电网为弱电网。
  21. 一种电源系统，其特征在于，包括：如权利要求11-20中任一项所述的供电装置和监控装置；
    所述监控装置，用于监测所述供电装置。
  22. 一种供电系统，其特征在于，包括：电网、电力变压器和如权利要求21所述的电源系统，其中，所述电网通过所述电力变压器为所述电源系统进行供电。
  23. 一种电子设备，其特征在于，包括：存储器、处理器；
    所述处理器用于与所述存储器耦合，读取并执行所述存储器中的指令，以实现权利要求1-10中任一项所述的方法。
  24. 一种计算机可读存储介质，其特征在于，所述计算机存储介质存储有计算机指令，当所述计算机指令被计算机执行时，使得所述计算机执行权利要求1-10中任一项所述的方法。
PCT/CN2020/114533 2020-09-10 2020-09-10 供电方法、装置、电子设备和可读存储介质 WO2022051990A1 (zh)

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