Power management method for a plurality of charging devices

Abstract

A power management method for a plurality of charging devices comprises: a master acquires power information of slaves and power information of the master itself, so as to obtain power information of the plurality of charging devices; the master acquires power information of a charging station where the plurality of charging devices are located; and the master performs power regulation on the plurality of charging devices on the basis of the power information of the plurality of charging devices and the power information of the charging station.

Description

Power management method for multiple charging devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 2023111244850 and application date of August 31, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present disclosure relates to the field of charging technology, and in particular to a power management method for multiple charging devices, a charging device, and a charging station. Background Art

[0004] When a charging station is built, the total power of all charging piles in the station is often greater than the capacity of the transformer of the entire station. In order to avoid excessive charging power during use, which may cause overload and damage to the transformer, power management of the charging station is required.

[0005] At present, most charging stations adopt the method of adding an energy management terminal to collect meter data through the energy management terminal, and use the platform to issue power limits to manage the power of charging equipment. This method requires the addition of new terminal equipment and increases the cost of station construction. At the same time, since all charging piles are connected to the platform through the energy management terminal, if the management terminal fails, not only will the power management function fail to be realized, but the entire charging station system will also be paralyzed and unable to operate.

[0006] Summary of the Invention

[0007] The present disclosure aims to address at least one of the technical problems existing in the prior art. To this end, the present disclosure proposes a power management method for multiple charging devices, charging devices, and a charging station. Each charging device can implement power management functions, effectively preventing overload of the station's transformer, minimizing station construction costs, and ensuring stable operation of the charging station.

[0008] The present disclosure provides a power management method for multiple charging devices, wherein the multiple charging devices are communicatively connected to form a local area network, wherein one of the charging devices in the local area network is a host and the remaining charging devices are slaves. The method includes:

[0009] The host obtains the power information of the slave and the power information of the host itself to obtain the power information of the multiple charging devices;

[0010] The host obtains power information of the charging stations where the multiple charging devices are located;

[0011] The host adjusts power of the plurality of charging devices based on power information of the plurality of charging devices and power information of the charging station.

[0012] According to the power management method for multiple charging devices disclosed in the present invention, by using one charging device in the station as the host, power regulation is performed on all charging devices in the station without setting up additional energy management and control terminals. This can effectively prevent transformer overload and will not increase the cost of station construction. At the same time, all charging devices in the station can realize power management functions, which can ensure the stability of the charging station operation.

[0013] According to some embodiments of the present disclosure, the method further includes:

[0014] When it is determined that the current first host is in an offline state, a new second host is re-elected from the slaves in the local area network, and the second host performs power regulation on the charging devices other than the first host.

[0015] According to some embodiments of the present disclosure, after re-electing a new second master from the slaves of the local area network, the method further includes:

[0016] When the first host recovers to an online state, the first host is used as the new slave in the local area network, and the second host performs power regulation on the charging device corresponding to the first host.

[0017] According to some embodiments of the present disclosure, determining that the current first host is in an offline state includes:

[0018] In a case where the heartbeat response between the first host and the slave fails, it is determined that the first host is in an offline state.

[0019] According to some embodiments of the present disclosure, the host is elected through the following steps:

[0020] In the local area network, each of the charging devices broadcasts its corresponding device number;

[0021] The charging device establishes a device list of the local area network based on its own device number and all received device numbers;

[0022] The charging device selects the host based on the device list and according to the target election rule.

[0023] According to some embodiments of the present disclosure, the target election rule is to elect the charging device with the smallest or largest device number in the device list as the host.

[0024] According to some embodiments of the present disclosure, the host adjusts the power of the multiple charging devices based on the power information of the multiple charging devices and the power information of the charging station, including:

[0025] The host adjusts power of the plurality of charging devices based on power information of the plurality of charging devices, power information of the charging station, and a power limit of the charging station.

[0026] The present disclosure provides a charging device, comprising:

[0027] A power management module is used to act as a host or a slave to execute the power management method for multiple charging devices.

[0028] The charging device according to the present disclosure can act as a host to adjust the power of all charging devices in the station, or it can act as a slave to upload power information to the host. The power management module implements the power management function and effectively ensures the stability of the charging station operation.

[0029] The present disclosure provides a charging station, comprising:

[0030] switch;

[0031] At least two of the above-mentioned charging devices, a first end of each of the charging devices is connected to the transformer, and a second end of each of the charging devices is connected to the switch;

[0032] an electric energy meter, a first end of the electric energy meter being connected to the transformer, a second end of the electric energy meter being connected to the switch, and the electric energy meter being used to collect power information of the charging station;

[0033] The electric energy meter and the at least two charging devices form a local area network, wherein one charging device in the local area network is a host and the remaining charging devices are slaves;

[0034] The host is configured to adjust the power of the at least two charging devices based on the power information of the at least two charging devices and the power information of the charging station.

[0035] According to the charging station disclosed in the present invention, by using one charging device in the station as the host, power regulation is performed on all charging devices in the station without setting up additional energy management terminals. This can effectively prevent transformer overload and will not increase the cost of station construction. At the same time, all charging devices in the station can realize power management functions, which can ensure the stability of the charging station operation.

[0036] According to some embodiments of the present disclosure, when the current first host is offline, the slave is also used to re-elect a new second host from the slaves in the local area network, and the second host is used to power regulate the charging devices other than the first host.

[0037] According to some embodiments of the present disclosure, the switch is connected to a public network.

[0038] The present disclosure provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the power management method for multiple charging devices as described above is implemented.

[0039] The present disclosure provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the power management method for multiple charging devices as described above is implemented.

[0040] The present disclosure provides a computer program product, including a computer program, which implements the power management method for multiple charging devices as described above when the computer program is executed by a processor.

[0041] Additional aspects and advantages of the present disclosure will be given in part in the description that follows and, in part, will be obvious from the description that follows, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] FIG1 is a schematic structural diagram of a charging station provided by an embodiment of the present disclosure;

[0044] FIG2 is a flow chart of a power management method for multiple charging devices provided by an embodiment of the present disclosure;

[0045] FIG3 is a schematic diagram of a process of selecting a host for a charging station according to an embodiment of the present disclosure;

[0046] FIG4 is a second schematic diagram of a process for electing a host in a charging station according to an embodiment of the present disclosure;

[0047] FIG5 is a third schematic diagram of a process for electing a host in a charging station according to an embodiment of the present disclosure;

[0048] FIG6 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.

[0049] Reference numerals:

[0050] Transformer 110 , electric energy meter 120 , charging device 130 , switch 140 . DETAILED DESCRIPTION

[0051] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0052] The terms "first", "second", etc. in the specification and claims of the present disclosure are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present disclosure can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects related to each other are in an "or" relationship.

[0053] The power management method for multiple charging devices 130 , the charging devices 130 , the charging station, the electronic device, and the readable storage medium provided by the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0054] An embodiment of the present disclosure provides a power management method for a plurality of charging devices 130 , which can be applied to a charging station including the plurality of charging devices 130 .

[0055] Each charging device 130 in the charging station can implement a power management function, which can effectively prevent the transformer 110 in the charging station from being overloaded, does not increase the cost of building the station, and ensures the stability of the operation of the charging station.

[0056] As shown in FIG. 1 , the charging station according to the embodiment of the present disclosure includes: a switch 140 , at least two charging devices 130 , and an electric energy meter 120 .

[0057] The charging device 130 is a device used to charge vehicles or working machinery, and the charging device 130 can be a DC charging pile or an AC charging pile.

[0058] A first end of each charging device 130 is connected to the transformer 110 , and a second end of each charging device 130 is connected to the switch 140 .

[0059] The transformer 110 can be connected to an external power grid to provide power to multiple charging devices 130. The total power of all charging devices 130 in the charging station can be greater than the rated capacity of the transformer 110. The power of the charging devices 130 can be managed to avoid excessive charging power during use, which may cause overload and damage to the transformer 110.

[0060] In this embodiment, the electric energy meter 120 is electrically connected to the transformer 110 and the plurality of charging devices 130 , and the electric energy meter 120 is used to collect power information of the charging station.

[0061] A first end of the electric energy meter 120 is connected to the transformer 110 , and a second end of the electric energy meter 120 is connected to the switch 140 .

[0062] In actual implementation, the energy meter 120 can be set after the transformer 110 and before the charging device 130, that is, the energy meter 120 is a sampling device at the incoming line end, and the energy meter 120 can collect power information of the entire charging station.

[0063] It should be noted that the power information of the charging station collected by the electricity meter 120 includes not only the power information of all charging devices 130 in the charging station, but also the power information of other loads in the charging station except the charging devices 130. Based on the power information of the charging station collected by the electricity meter 120, the load situation of the entire charging station can be accurately judged.

[0064] The electric energy meter 120 and at least two charging devices 130 form a local area network, wherein one charging device 130 in the local area network serves as a host, and the remaining charging devices 130 serve as slaves of the local area network.

[0065] Among them, a local area network refers to a group of network devices located in the same geographical location and the communication network connected to them. Devices within the local area network can communicate with each other to achieve data transmission and sharing.

[0066] In this embodiment, the electric energy meter 120 is communicatively connected with a plurality of charging devices 130 to form a local area network. The local area network connection mode between the electric energy meter 120 and the plurality of charging devices 130 can be a wired connection or a wireless connection. For example, the wired connection can be an Ethernet-based connection, and the wireless connection can be a WiFi-based connection.

[0067] It should be noted that each charging device 130 is provided with a corresponding power management module. The power management module can be a virtual module written into the charging device 130. The power management module has the function of data collection. The power management module can obtain the real-time required power, output power and other power information of the charging device 130.

[0068] It can be understood that the power management module of the charging device 130 has a communication function. In the local area network, the power management module of the host can obtain the power information of the charging station collected by the electricity meter 120, and can also obtain the power information of the remaining charging devices 130 serving as slaves, and send control instructions to the power management module of the slaves; and the power management module serving as a slave can report the collected power information of the charging device 130, and receive the control instructions sent by the host to adjust the power of the charging device 130.

[0069] It should be noted that the power management module also has the functions of data collection and power regulation. The host's power management module can collect the power information of its corresponding charging device 130 and adjust the power of its own charging device 130. The host's power management module performs power management on all charging devices 130 in the charging station based on the power information of the charging station and the power information of all charging devices 130 in the charging station.

[0070] An embodiment of the present disclosure provides a power management method for multiple charging devices 130 . The multiple charging devices 130 are communicatively connected to form a local area network. In the local area network, one charging device 130 is a host, and the remaining charging devices 130 are slaves.

[0071] Among them, the host executes the power management method to output control instructions to multiple slaves based on the power information of multiple charging devices 130 and the power information of the charging station. The control instructions are used to adjust the power of the charging devices 130 corresponding to the slaves; the slave executes the power management method and sends its own power information to the host.

[0072] As shown in FIG. 2 , the power management method for multiple charging devices 130 includes steps 210 to 230 .

[0073] Step 210 : The host obtains the power information of the slaves and the host's own power information to obtain the power information of the multiple charging devices 130 .

[0074] In the local area network, the charging device 130 serving as the host can obtain the power information of the charging device 130 corresponding to the slave, and can also obtain the power information of the charging device 130 of the host itself.

[0075] Step 220 : The host obtains power information of the charging stations where the multiple charging devices 130 are located.

[0076] In this step, the host can obtain the power information of the entire charging station through the power meter 120 in the local area network.

[0077] It should be noted that the power information of the charging station collected by the electricity meter 120 includes not only the power information of all charging devices 130 in the charging station, but also the power information of other loads in the charging station except the charging devices 130. Based on the power information of the charging station collected by the electricity meter 120, the load situation of the entire charging station can be accurately judged.

[0078] Step 230 : The host adjusts the power of the multiple charging devices 130 based on the power information of the multiple charging devices 130 and the power information of the charging station.

[0079] In this step, the host analyzes the power information of multiple charging devices 130 and the power information of the charging station, sends control instructions to the slave, and adjusts the power of the charging device 130 corresponding to the slave. At the same time, the host can also send control instructions to adjust the power of its own charging device 130.

[0080] In related technologies, power regulation is achieved through information exchange among charging piles within the station. However, there is only one charging pile in the station that performs energy management and collects meter information. When the charging pile is damaged, the system cannot collect meter information and cannot implement power management functions, resulting in the entire charging station system being paralyzed and unable to operate.

[0081] In the embodiment of the present disclosure, the electric energy meter 120 and multiple charging devices 130 form a local area network. The host in the local area network adjusts the power of all charging devices 130 (including the host itself) in the charging station without the need for an external energy management terminal. Without increasing the cost of station construction, the transformer 110 can be effectively prevented from being overloaded. Each charging device 130 can obtain the information collected by the electric energy meter 120 in the local area network. Each charging device 130 has the conditions to become a host. When a charging device 130 or its power management module fails, a new charging device 130 can take over as the host to realize the power management function and ensure the stability of the charging station operation.

[0082] It should be noted that the energy meter 120 in the local area network is a device that provides power information of the charging station. The power information reported by the energy meter 120 can be used to accurately judge the load of the entire charging station, ensure that the transformer 110 will not be overloaded, and improve the safety of the charging station operation.

[0083] According to the power management method for multiple charging devices 130 provided in the embodiment of the present disclosure, by using one charging device 130 in the station as the host, power regulation is performed on all charging devices 130 in the station without setting up additional energy management and control terminals. This can effectively prevent the transformer 110 from being overloaded and will not increase the cost of station construction. At the same time, all charging devices 130 in the station can realize the power management function, which can ensure the stability of the operation of the charging station.

[0084] In some embodiments, in step 230 , the host adjusts the power of the plurality of charging devices 130 based on the power information of the plurality of charging devices 130 and the power information of the charging station, including:

[0085] The host adjusts the power of the plurality of charging devices 130 based on the power information of the plurality of charging devices 130 , the power information of the charging station, and the power limit of the charging station.

[0086] In this embodiment, the host adjusts the power of the multiple charging devices 130 based on the power information of the multiple charging devices 130, the power information of the charging station, and the power limit of the charging station to ensure that the total power of the multiple charging devices 130 does not exceed the power limit of the charging station, thereby effectively preventing the transformer 110 from being overloaded.

[0087] In actual implementation, the power limit of the charging station can be a pre-set power value or a power value sent from the cloud.

[0088] In some embodiments, the power management method for multiple charging devices 130 further includes:

[0089] When it is determined that the current first host is in an offline state, a new second host is re-elected from the slaves in the local area network, and the second host performs power regulation on the charging devices 130 other than the first host.

[0090] In this embodiment, when the first host currently responsible for power management is in an offline fault state, a new second host is re-elected from the current slaves to take over the power management function, thereby improving the stability of the charging station operation.

[0091] It should be noted that the first host is in an offline state. This may be because the communication function of the power management module of the first host is damaged, and it is unable to obtain data from the electricity meter 120 and other charging devices 130, or it is unable to send control instructions to other charging devices 130; it may also be that the charging device 130 corresponding to the first host fails and cannot provide power information of the charging device 130.

[0092] In related technologies, there is only one charging pile in the station that performs energy management and collects meter information. When the charging pile is damaged, the system cannot collect meter information and cannot implement power management functions, which causes the entire charging station system to be paralyzed.

[0093] In the embodiment of the present disclosure, after the current first host fails and goes offline, a new second host will be automatically re-elected to take over the system power management function. The new second host will adjust the power of the charging devices 130 in the charging station other than the first host, ensuring the implementation of the power management function and improving the stability of the charging station operation.

[0094] For example, as shown in FIG4 , charging pile No. 1 serves as the host, and charging pile No. 2, …, charging pile No. N-1, and charging pile No. N all serve as slaves.

[0095] When charging pile No. 1 fails, the remaining charging piles No. 2...N-1 and N refresh the device list and re-elect the host.

[0096] In the current device list, charging pile No. 2 has the smallest device number. Charging pile No. 2 serves as the host, and the remaining charging piles No. N-1 and No. N serve as slaves. The host samples the energy meter data and the charging pile data corresponding to other slaves, and distributes power to all charging piles in the charging station.

[0097] In some embodiments, after a new second host is re-elected from the slaves of the local area network, the power management method for the multiple charging devices 130 may further include:

[0098] When the first host recovers to an online state, the first host is used as a new slave in the local area network, and the second host performs power regulation on the charging device 130 corresponding to the first host.

[0099] In this embodiment, when the originally faulty first host returns to online status, the first host will rejoin the device list of the local area network. At this time, the first host participates in power regulation as a slave, that is, the first host receives the control instructions of the current second host to perform power regulation.

[0100] For example, as shown in Figure 5, when the faulty charging pile No. 1 is restored, it will broadcast its own device number, and the device list of charging pile No. 1, charging pile No. 2... charging pile No. N-1 and charging pile No. N will all be refreshed.

[0101] It should be noted that in the refreshed device list, charging pile No. 1 has the smallest device number, but charging pile No. 2 is still the master, and charging piles No. 1...N-1 and N are all slaves. The master samples the energy meter data and the charging pile data corresponding to other slaves, and distributes power to all charging piles in the charging station.

[0102] In some embodiments, determining that the current first host is in an offline state may include:

[0103] In the event that the heartbeat response between the first master and the slave fails, it is determined that the first master is in an offline state.

[0104] In this embodiment, after the master is elected, a real-time heartbeat connection is established between the master and multiple slaves. The heartbeat information sent and fed back within the local area network is used to indicate whether the slaves are online. When the master or slave no longer sends or feeds back heartbeat information, it is determined that the master or slave is offline.

[0105] For example, as shown in FIG4 , charging pile No. 1 serves as the host, charging pile No. 2, charging pile No. N-1, and charging pile No. N all serve as slaves, and a real-time heartbeat connection is established between the host and multiple slaves.

[0106] When charging pile No. 1 fails and the master-slave heartbeat detection is abnormal, the remaining charging piles No. 2...N-1 and N will refresh the device list and re-elect the master.

[0107] In the current device list, charging pile No. 2 has the smallest device number. Charging pile No. 2 serves as the host, and the remaining charging piles No. N-1 and No. N serve as slaves. The host samples the energy meter data and the charging pile data corresponding to other slaves, and distributes power to all charging piles in the charging station.

[0108] It is understandable that when a slave fails and goes offline, the host cannot obtain the power information of the charging device 130 corresponding to the slave. The host and other slaves can refresh the device list, and the host no longer considers the power information corresponding to the slave when allocating power.

[0109] In some embodiments, the host is elected by:

[0110] In the local area network, each charging device 130 broadcasts its corresponding device number;

[0111] The charging device 130 creates a device list for the local area network based on its own device ID and all received device IDs;

[0112] The charging device 130 selects a host based on the device list and in accordance with the target election rules.

[0113] In this embodiment, all charging devices 130 in the charging station first broadcast their corresponding device numbers. Each charging device 130 establishes a local area network device list based on the received device number and its own device number. The device list includes the device numbers corresponding to all charging devices 130, and then selects the host of the local area network according to the preset target election rules.

[0114] In some embodiments, the target election rule may be to elect the charging device 130 with the smallest or largest device number in the device list as the host.

[0115] For example, as shown in FIG3 , the charging station includes N charging piles. After the system is powered on, all charging piles broadcast the corresponding device numbers.

[0116] The device number corresponding to charging pile No. 1 is 1, the device number corresponding to charging pile No. 2 is 2, and so on.

[0117] Each charging pile adds the device number broadcast in the local area network to its own device list, selects the charging pile with the smallest device number as the host, and the others as slaves.

[0118] In this embodiment, the device number corresponding to charging pile No. 1 is the smallest, and charging pile No. 1 serves as the host. Charging piles No. 2...N-1 and charging pile No. N all serve as slaves. The host samples the energy meter data and the charging pile data corresponding to other slaves, and distributes power to all charging piles in the charging station.

[0119] In related technologies, all charging piles in a station can obtain each other's information and send power, which will result in a charging pile having multiple control commands to execute. If the calculations of different charging piles are inconsistent, conflicts will arise, resulting in power management failure.

[0120] In the embodiment of the present disclosure, an election mechanism is used to ensure that there is only one host in the local area network that can collect information from the electricity meter 120 and other charging devices 130, thereby avoiding multiple charging devices 130 from sending power adjustment information to other charging devices 130 at the same time, thereby ensuring the effectiveness and stability of the power management of the entire charging station.

[0121] The embodiment of the present disclosure further provides a charging device 130 .

[0122] The charging device 130 includes a power management module, which is used to act as a master or a slave to execute the above-mentioned power management method for multiple charging devices 130 .

[0123] The power management module of the charging device 130 has a communication function. Within the local area network, the power management module of the host can obtain the power information of the charging station collected by the electricity meter 120, and can also obtain the power information of the remaining charging devices 130 serving as slaves, and send control instructions to the power management modules of the slaves; and the power management module of the slave can report the collected power information of the charging device 130, and receive the control instructions sent by the host to adjust the power of the charging device 130.

[0124] It should be noted that the power management module also has the functions of data collection and power regulation. The host's power management module can collect the power information of its corresponding charging device 130 and adjust the power of its own charging device 130. The host's power management module performs power management on all charging devices 130 in the charging station based on the power information of the charging station and the power information of all charging devices 130 in the charging station.

[0125] The charging device 130 provided according to the embodiment of the present disclosure can act as a host to adjust the power of all charging devices 130 in the station, or as a slave to upload power information to the host. The power management module implements the power management function and effectively ensures the stability of the operation of the charging station.

[0126] The embodiment of the present disclosure also provides a charging station.

[0127] As shown in FIG1 , the charging station includes a switch 140 , at least two charging devices 130 , and an electric energy meter 120 . A first end of each charging device 130 is connected to a transformer 110 , and a second end of each charging device 130 is connected to the switch 140 .

[0128] A first end of the electric energy meter 120 is connected to the transformer 110 , and a second end of the electric energy meter 120 is connected to the switch 140 . The electric energy meter 120 is used to collect power information of the charging station.

[0129] The energy meter 120 and at least two charging devices 130 form a local area network, in which one charging device 130 is a host and the other charging devices 130 are slaves; the host is used to adjust the power of the at least two charging devices 130 based on the power information of the at least two charging devices 130 in the charging station and the power information of the charging station.

[0130] According to the charging station provided by the embodiment of the present disclosure, by using one charging device 130 in the station as the host, power regulation is performed on all charging devices 130 in the station without setting up an additional energy management terminal. This can effectively prevent the transformer 110 from being overloaded and will not increase the cost of station construction. At the same time, all charging devices 130 in the station can implement power management functions, which can ensure the stability of the charging station operation.

[0131] In some embodiments, when the current first host is offline, the slave is further configured to re-elect a new second host from the slaves in the local area network, and the second host is configured to perform power regulation on the charging device 130 other than the first host.

[0132] In some embodiments, the switch 140 is connected to the public network.

[0133] The switch 140 can connect multiple Ethernet physical segments, isolate collision domains, and perform high-speed and transparent switching and forwarding of data communicated between the energy meter 120 and multiple charging devices 130 .

[0134] In this embodiment, the switch 140 can be connected to a network cable that can access the public network, and connected to the cloud through the switch 140, so that the equipment of the entire charging station can be connected to the cloud, and the cloud can monitor the operation of the charging station.

[0135] In some embodiments, as shown in Figure 6, the embodiment of the present disclosure further provides an electronic device 600, including a processor 601, a memory 602, and a computer program stored in the memory 602 and executable on the processor 601. When the program is executed by the processor 601, each process of the power management method embodiment of the above-mentioned multiple charging devices 130 is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0136] It should be noted that the electronic devices in the embodiments of the present disclosure include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0137] The embodiments of the present disclosure further provide a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the power management method embodiment for the above-mentioned multiple charging devices 130 are implemented, and the same technical effects can be achieved. To avoid repetition, they are not described here.

[0138] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0139] The embodiments of the present disclosure further provide a computer program product, including a computer program, which implements the power management method of the plurality of charging devices 130 when executed by a processor.

[0140] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0141] An embodiment of the present disclosure further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the power management method embodiment of the above-mentioned multiple charging devices 130, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0142] It should be understood that the chip mentioned in the embodiments of the present disclosure can also be called a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc.

[0143] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present disclosure is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0144] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0145] The embodiments of the present disclosure are described above in conjunction with the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present disclosure, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present disclosure and the claims, all of which are protected by the present disclosure.

[0146] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0147] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A power management method for multiple charging devices, wherein: A plurality of charging devices are connected in communication to form a local area network, one of the charging devices in the local area network is a host, and the remaining charging devices are slaves, and the method includes: The host acquires the power information of the slave and the power information of the host itself, and obtains the power information of the multiple charging devices; The host obtains power information of the charging stations where the multiple charging devices are located; The host adjusts power of the plurality of charging devices based on power information of the plurality of charging devices and power information of the charging station.

2. The power management method for multiple charging devices according to claim 1, wherein: The method further comprises: When it is determined that the current first host is in an offline state, a new second host is re-elected from the slaves of the local area network, and the second host performs power regulation on the charging devices other than the first host.

3. The power management method for multiple charging devices according to claim 2, wherein: After re-selecting a new second host from the slaves of the local area network, the method further includes: When the first host is restored to an online state, the first host is used as a new slave in the local area network, and the second host performs power regulation on the charging device corresponding to the first host.

4. The power management method for multiple charging devices according to claim 2 or 3, wherein: The determining that the current first host is in an offline state includes: In the event that the heartbeat response between the first host and the slave fails, it is determined that the first host is in an offline state.

5. The power management method for multiple charging devices according to any one of claims 1 to 4, wherein: The host is elected through the following steps: In the local area network, each of the charging devices broadcasts its corresponding device number; The charging device establishes a device list of the local area network based on its own device number and all received device numbers; The charging device selects the host based on the device list and according to the target election rule.

6. The power management method for multiple charging devices according to claim 5, wherein: The target election rule is to elect the charging device with the smallest or largest device number in the device list as the host.

7. The power management method for multiple charging devices according to any one of claims 1 to 6, wherein: The host performs power adjustment on the multiple charging devices based on the power information of the multiple charging devices and the power information of the charging station, including: The host adjusts power of the multiple charging devices based on power information of the multiple charging devices, power information of the charging station, and a power limit of the charging station.

8. A charging device, wherein: include: A power management module, wherein the power management module is used to act as a host or a slave to execute the power management method for multiple charging devices according to any one of claims 1-7.

9. A charging station, wherein: include: switch; At least two charging devices according to claim 8, wherein a first end of each of the charging devices is connected to the transformer, and a second end of each of the charging devices is connected to the switch; an electric energy meter, wherein a first end of the electric energy meter is connected to the transformer, a second end of the electric energy meter is connected to the switch, and the electric energy meter is used to collect power information of the charging station; The electric energy meter and the at least two charging devices form a local area network, one of the charging devices in the local area network is a host, and the remaining charging devices are slaves; The host is used to adjust the power of the at least two charging devices based on the power information of the at least two charging devices and the power information of the charging station.

10. The charging station according to claim 9, wherein: In the case that the current first host is in an offline state, the slave is further used to re-elect a new second host from the slaves in the local area network, and the second host is used to perform power regulation on the charging devices other than the first host.

11. The charging station according to claim 9 or 10, wherein: The switch is connected to the public network.

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