Energy management system and charging station

Abstract

The embodiment of the invention provides an energy management system and a charging station, and relates to the technical field of energy storage. The method comprises the steps that firstly, an Ethernet interface ammeter actively broadcasts ammeter information including own IP addresses and communication port numbers to a plurality of charging devices; secondly, the target charging equipment sends target equipment information including an IP address and a communication port number of the target charging equipment to the Ethernet interface ammeter according to the ammeter information; and finally, the Ethernet interface electric meter sends a communication request to the target charging equipment according to the target equipment information, so that communication connection is established between the Ethernet interface electric meter and the target charging equipment. Therefore, because the Ethernet interface electric meter sends the electric meter information in a broadcast mode, each charging device can receive the electric meter information and select whether to establish communication connection with the Ethernet interface electric meter or not according to own needs, so that communication faults caused by conflict between the Ethernet interface electric meter and the IP address of the charging device are avoided; and the efficiency and the accuracy of energy management are improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy management system and a charging station. Background Art

[0002] In order to ensure that the growing demand for electric vehicle charging can be met, charging stations are usually equipped with multiple charging devices (such as chargers), and the total power of all charging devices is higher than the rated capacity of the transformer, thereby enhancing the redundancy and total output power of the charging equipment to ensure that electric vehicles can be provided with stable and sufficient charging services at any time. At the same time, in order to avoid transformer overload damage due to excessive power of charging equipment, charging stations also need to carry out effective energy management.

[0003] However, the Internet Protocol (IP) address of the meter is usually statically configured, while the IP address of the charging device is usually dynamically configured. This configuration method may lead to IP address conflicts between the meter and the charging device. Once an IP address conflict occurs, it will seriously affect the meter's normal collection of the power usage of each charging device, and thus have an adverse impact on the energy management of the charging station. Summary of the invention

[0004] Based on the above problems, the present application provides an energy management system and a charging station, which can improve the efficiency and accuracy of energy management.

[0005] The embodiments of the present application disclose the following technical solutions:

[0006] In a first aspect, the present application discloses an energy management system, the system comprising: an Ethernet interface electric meter and a plurality of charging devices, the plurality of charging devices including a target charging device;

[0007] The Ethernet interface meter is used to broadcast meter information to the multiple charging devices, and the meter information includes an Internet Protocol IP address and a communication port number of the Ethernet interface meter;

[0008] The target charging device is used to send target device information to the Ethernet interface meter according to the received meter information, wherein the target device information includes an IP address and a communication port number of the target charging device;

[0009] The Ethernet interface electric meter is used to send a communication request to the target charging device according to the received target device information, so that the Ethernet interface electric meter and the target charging device establish a communication connection.

[0010] Optionally, the system further comprises: a switch, the switch being connected to the Ethernet interface electric meter and the plurality of charging devices;

[0011] The Ethernet interface electricity meter is specifically used to broadcast the electricity meter information into the local area network when the Ethernet interface electricity meter and the plurality of charging devices establish a local area network through the switch.

[0012] Optionally, the target charging device is specifically used to obtain the electric meter information from the local area network; and send target device information to the Ethernet interface electric meter through the local area network according to the electric meter information.

[0013] Optionally, the plurality of charging devices include a backup charging device;

[0014] The standby charging device is used to obtain the meter information from the local area network when the heartbeat response between the standby charging device and the target charging device fails; according to the meter information, send the standby device information to the Ethernet interface meter, the standby device information including the IP address and communication port number of the standby charging device;

[0015] The Ethernet interface electric meter is further used to send a communication request to the backup charging device according to the received backup device information, so that the Ethernet interface electric meter and the backup charging device establish a communication connection.

[0016] Optionally, the Ethernet interface electric meter is further used to disconnect the communication connection with the target charging device.

[0017] Optionally, the Ethernet interface electric meter is further configured to restart if the target device information or the backup device information is not received within a first preset time period after the broadcasting of the electric meter information to the multiple charging devices is performed.

[0018] Optionally, the IP address of the Ethernet interface electric meter is obtained dynamically.

[0019] Optionally, the target charging device is further used to send a data collection command to the Ethernet interface meter, wherein the data collection command instructs the Ethernet interface meter to collect meter data of the multiple charging devices and send the meter data of the multiple charging devices to the target charging device.

[0020] Optionally, the charging device includes at least one of a charging pile, a charger and a collector.

[0021] In a second aspect, the present application discloses a charging station, which includes the energy management system described in the first aspect.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] The embodiment of the present application provides an energy management system and a charging station. First, the Ethernet interface meter actively broadcasts meter information including its own IP address and communication port number to multiple charging devices; secondly, the target charging device sends the target device information including its own IP address and communication port number to the Ethernet interface meter according to the meter information; finally, the Ethernet interface meter sends a communication request to the target charging device according to the target device information, so that the Ethernet interface meter and the target charging device establish a communication connection. Therefore, because the Ethernet interface meter sends the meter information by broadcasting, each charging device can receive the meter information and choose whether to establish a communication connection with the Ethernet interface meter according to its own needs, thereby avoiding communication failures caused by conflicts between the IP addresses of the Ethernet interface meter and the charging device, and improving the efficiency and accuracy of energy management. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic diagram of a charging station;

[0026] Figure 2A A schematic diagram of an energy management system provided in an embodiment of the present application;

[0027] Figure 2B A schematic diagram of another energy management system provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of an Ethernet interface electric meter broadcasting electric meter information to a charging device provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of a target charging device sending target device information to an Ethernet interface meter provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of establishing a communication connection between an Ethernet interface electric meter and a target charging device provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of a client / server mode provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of energy management of a target charging device provided in an embodiment of the present application;

[0033] Fig. 8A A schematic diagram of energy management of a standby charging device provided in an embodiment of the present application;

[0034] Figure 8B A schematic diagram of the interaction between a standby charging device and an Ethernet interface electric meter provided in an embodiment of the present application;

[0035] Figure 8C A schematic diagram of interaction between another standby charging device and an Ethernet interface electric meter provided in an embodiment of the present application;

[0036] Fig.8D A schematic diagram of restarting an Ethernet interface electric meter provided in an embodiment of the present application;

[0037] Fig. 9 A schematic diagram of a single and multiple Ethernet interface electricity meter provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] As described above, charging stations are usually equipped with at least one electricity meter. Figure 1 , which is a schematic diagram of a charging station. The main function of the meter is to monitor and record the power usage of each charging device in real time, so that the operation and maintenance personnel can clearly understand the power consumption of each charging device at different times, thereby ensuring the safe and efficient operation of the charging equipment.

[0039] However, the IP address of the meter is usually statically configured, while the IP address of the charging device is usually dynamically configured. This configuration method may lead to IP address conflicts between the meter and the charging device. Once an IP address conflict occurs, it will seriously affect the meter's normal collection of the power usage of each charging device, thereby adversely affecting the energy management of the charging station.

[0040] After research, the inventor proposed an energy management system and a charging station. First, the Ethernet interface meter actively broadcasts meter information including its own IP address and communication port number to multiple charging devices; secondly, the target charging device sends the target device information including its own IP address and communication port number to the Ethernet interface meter according to the meter information; finally, the Ethernet interface meter sends a communication request to the target charging device according to the target device information, so that the Ethernet interface meter and the target charging device establish a communication connection. Therefore, because the Ethernet interface meter sends the meter information by broadcasting, each charging device can receive the meter information and choose whether to establish a communication connection with the Ethernet interface meter according to its own needs, thereby avoiding communication failures caused by conflicts between the IP addresses of the Ethernet interface meter and the charging device, and improving the efficiency and accuracy of energy management. In addition, the energy management system provided by the embodiment of the present application can ensure that during peak hours, even if all charging devices work at the same time, the transformer will not be overloaded, thereby extending the service life of the transformer and ensuring the safe and stable operation of the charging station.

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] See also Figure 2A , which is a schematic diagram of an energy management system provided in an embodiment of the present application. The energy management system 20 includes an Ethernet interface meter 21 and multiple charging devices, including a target charging device 22. Exemplarily, the charging device can be at least one of a charging pile, a charger and a collector. The present application does not limit the specific charging device.

[0043] S201: The Ethernet interface electricity meter broadcasts electricity meter information to multiple charging devices, where the electricity meter information includes an Internet Protocol IP address and a communication port number of the Ethernet interface electricity meter.

[0044] The Ethernet interface meter 21 will send meter information to multiple charging devices in a broadcasting manner. Broadcasting is a network communication method that allows the Ethernet interface meter 21 to send meter information to multiple charging devices at one time. The meter information includes the IP address of the Ethernet interface meter 21 and the communication port number used for subsequent communication. The IP address is the network identity of the charging device, and the port number is used to accurately identify and locate a specific service or application in a complex network environment.

[0045] S202: The target charging device sends the target device information to the Ethernet interface meter according to the received meter information, and the target device information includes the IP address and communication port number of the target charging device.

[0046] Although all charging devices in the local area network can receive the meter information of the Ethernet interface meter 21, not all charging devices need to respond to the meter information of the Ethernet interface meter 21. Instead, only those charging devices configured for monitoring or those charging devices that are interested in the meter information of the Ethernet interface meter 21 (i.e., the target charging devices) will make further responses.

[0047] The target charging device 22 will respond to the received meter information and send the target device information to the Ethernet interface meter 21 in unicast form. Among them, unicast is a point-to-point network communication method, which ensures that the target charging device 22 can accurately and directly send the target device information to the designated Ethernet interface meter 21. The target device information includes the IP address and communication port number of the target charging device 22.

[0048] S203: The Ethernet interface electricity meter sends a communication request to the target charging device according to the received target device information, so that the Ethernet interface electricity meter and the target charging device establish a communication connection.

[0049] After receiving the target device information of the target charging device 22, the Ethernet interface meter 21 will actively send a communication request to the target charging device 22, thereby establishing a communication connection with the target charging device 22. This communication connection is bidirectional, allowing data exchange and command transmission between the Ethernet interface meter 21 and the target charging device 22.

[0050] To summarize, the embodiment of the present application provides an energy management system. In the energy management system provided by the embodiment of the present application, because the Ethernet interface meter sends the meter information by broadcasting, each charging device can receive the meter information and choose whether to establish a communication connection with the Ethernet interface meter according to its own needs, thereby avoiding communication failures caused by conflicts between the IP addresses of the Ethernet interface meter and the charging device, and improving the efficiency and accuracy of energy management.

[0051] See also Figure 2B , which is a schematic diagram of another energy management system provided by an embodiment of the present application. The energy management system 20 includes an Ethernet interface electric meter 21, a switch 23 and multiple charging devices (including a target charging device 22 and a backup charging device 24).

[0052] The Ethernet interface meter 21 is set as a client, responsible for sending requests or information to the server (i.e., the target charging device 22). Compared with traditional meters, the Ethernet interface meter 21 has a higher information transmission rate and better real-time performance, which means that the Ethernet interface meter 21 can transmit information faster and more accurately, which is crucial for the real-time response of the energy management system 20.

[0053] Multiple charging devices are set as service terminals. The charging devices are terminals of the energy management system 20 and are responsible for providing charging services for electric vehicles or other devices. Each charging device is equipped with a network communication function module, which enables them to interact with other devices (such as Ethernet interface meters 21, switches 23, and other charging devices in multiple charging devices). This function is the key to realizing the intelligence and automation of the energy management system 20.

[0054] The switch 23 is the core device of the local area network (LAN), which is responsible for connecting all devices in the LAN (including the Ethernet interface meter 21 and multiple charging devices) so that they can communicate with each other. Through the switch 23, all devices are connected together through high-speed Ethernet, ensuring fast data transmission. This is very important for the energy management system 20 that requires real-time data exchange.

[0055] S301: When the Ethernet interface electricity meter and a plurality of charging devices establish a local area network through a switch, the Ethernet interface electricity meter broadcasts electricity meter information into the local area network.

[0056] See also Figure 3 , which is a schematic diagram of an Ethernet interface meter broadcasting meter information to a charging device provided by an embodiment of the present application. It should be noted that, Figure 3 In the example, the charging device is a charging pile and the switch 23 is a router.

[0057] First, the Ethernet interface meter 21 will adopt a broadcasting method to send meter information to all charging devices in the local area network (LAN) where it is located. The meter information includes the Internet Protocol IP address and communication port number of the Ethernet interface meter.

[0058] It should be noted that the IP address of the Ethernet interface meter 21 is a dynamic IP address dynamically assigned by the switch 23. This dynamic IP address is temporary and may change according to the situation in the local area network (such as charging device connection, disconnection or network configuration change). The process of obtaining a dynamic IP address is usually implemented through the Dynamic Host Configuration Protocol (DHCP).

[0059] S302: The target charging device obtains the electricity meter information from the local area network.

[0060] The target charging device 22 is in a monitoring state in the local area network. When the target charging device 22 monitors the broadcast of the meter information, the target charging device 22 will obtain the IP address and communication port number of the Ethernet interface meter 21 from the local area network.

[0061] S303: The target charging device sends the target device information to the Ethernet interface meter through the local area network according to the meter information.

[0062] See also Figure 4 , which is a schematic diagram of a target charging device sending target device information to an Ethernet interface meter provided by an embodiment of the present application. For example, assuming that charging pile 1# is the target charging device 22, that is, charging pile 1# obtains the meter information of the Ethernet interface meter 21, then charging pile 1# needs to obtain the IP address and communication port number of the Ethernet interface meter 21 by parsing the meter information, and then unicast the target device information to the Ethernet interface meter 21 according to the network protocol (such as TCP / IP), and the target device information includes the IP address and communication port number of the charging pile 1# itself.

[0063] It should be noted that when the target charging device 22 sends the target device information to the Ethernet interface meter 21, the target charging device 22 will establish a heartbeat response mechanism with other charging piles. Therefore, if the target charging device 22 has a communication failure, other charging devices can know it.

[0064] S304: The Ethernet interface electricity meter sends a communication request to the target charging device according to the received target device information, so that the Ethernet interface electricity meter and the target charging device establish a communication connection.

[0065] See also Figure 5 , which is a schematic diagram of establishing a communication connection between an Ethernet interface electric meter and a target charging device provided in an embodiment of the present application.

[0066] S305: The target charging device sends a data collection command to the Ethernet interface meter.

[0067] See also Figure 6 , which is a schematic diagram of a client / server mode provided in an embodiment of the present application. Once the target charging device 22 successfully establishes a communication connection with the Ethernet interface meter 21, the target charging device 22 (as the server) will send a data collection command to the Ethernet interface meter 21 (as the client). The data collection command instructs the Ethernet interface meter 21 to collect meter data of multiple charging devices, and send meter data of multiple charging devices to the target charging device 22. Among them, the meter data can be charging power, three-phase voltage, three-phase current, etc., depending on the requirements and configuration of the energy management system 20. This application does not limit the specific meter data.

[0068] S306: The target charging device manages the discharge power of the multiple charging devices according to the meter data of the multiple charging devices.

[0069] After receiving the meter data of multiple charging devices (including at least one of the charging power, three-phase voltage and three-phase current), the target charging device 22 calculates the current power value of each charging device according to the meter data of the multiple charging devices. The calculation of the current power value may involve multiplying the voltage and current values ​​in the meter data, or obtaining it according to the direct power reading provided by the meter. Subsequently, the target charging device 22 compares the calculated current power value with the preset power threshold. The preset power threshold is set according to the stability of the power grid and the requirement to avoid overload.

[0070] If the sum of the current power values ​​of all charging devices is less than or equal to the preset power threshold, the target charging device 22 manages the discharge power of each charging device according to the current power value of each charging device. This may include adjusting the charging rate, optimizing power distribution, or in some cases, if the charging device supports the discharge function, it may also include extracting energy from the charging device to balance the grid load.

[0071] If the sum of the current power values ​​of all charging devices is higher than the preset power threshold, the target charging device 22 will trigger an alarm indication to notify the system administrator or operator that the current power demand of the energy management system 20 has exceeded the preset limit and measures need to be taken to avoid grid overload or ensure stable system operation.

[0072] It should be noted that the Ethernet interface meter 21 is set as the client (Client) and the target charging device 22 is set as the server (Server) in the embodiment of the present application. In the traditional energy management system, the meter is usually used as the server, and its IP address is often statically set. With the increase of charging devices in the charging station, the setting of static IP addresses is likely to cause conflicts between the IP address of the meter and the IP address of the charging device, which brings inconvenience to the operation and maintenance of the energy management system.

[0073] When the energy management system 20 provided in the embodiment of the present application is applied and the Ethernet interface meter 21 is set as a client, the Ethernet interface meter 21 can automatically obtain a dynamic IP address from the switch 23. This dynamic IP address allocation method effectively avoids the problem of conflict between the IP address of the Ethernet interface meter 21 and the IP address of the charging device, thereby improving the flexibility and reliability of the energy management system 20.

[0074] Moreover, as a client, the Ethernet interface meter 21 can dynamically establish multiple communication connections with multiple charging devices and respond to requests from multiple charging devices at the same time. This allows multiple charging devices to simultaneously obtain meter data from the Ethernet interface meter 21 for power regulation and energy management during peak charging periods, thereby ensuring the stable operation of the charging station.

[0075] See also Figure 7 , which is a schematic diagram of energy management of a target charging device provided in an embodiment of the present application. Figure 7 It can be seen that a single charging pile (or the master charging pile designated by the dispatching center, for example, charging pile 1# is designated as the master charging pile) can be used as the power management unit of the entire charging station, responsible for regulating and distributing power to all charging piles in the station to prevent transformer overload and ensure the stable operation of the overall power grid.

[0076] S307: When the heartbeat response between the standby charging device and the target charging device fails, the standby charging device obtains the electricity meter information from the local area network.

[0077] It should be noted that although the target charging device 22 is responsible for the main power management work, all charging devices can have the ability to read and process the meter information, which can increase the redundancy and flexibility of the energy management system 20 and facilitate rapid switching when the target charging device 22 fails.

[0078] See also Fig. 8A , which is a schematic diagram of energy management of a standby charging device provided in an embodiment of the present application. The heartbeat response is a simple communication mechanism used to confirm whether the target charging device 22 is still online and operating normally. If the standby charging device 24 does not receive a response from the target charging device 22 within a certain period of time, it is considered that the heartbeat response has failed, and the target charging device 22 may have failed or cannot continue to perform its power management duties.

[0079] Once the heartbeat response between the backup charging device 24 and the target charging device 22 fails, the mechanism of switching the target charging device 22 should be triggered immediately, that is, the backup charging device 24 obtains the meter information from the local area network so that the backup charging device 24 can take over the power management work of the target charging device 22.

[0080] It can be understood that if there are multiple devices among the multiple charging devices that can exchange information, then the device that first obtains the meter information can be determined as the backup charging device.

[0081] It should be noted that, since the Ethernet interface meter 21 in the above step 201 sends its own meter information to the local area network, the backup charging device 24 can automatically obtain the meter information of the Ethernet interface meter 21 from the local area network. Therefore, the backup charging device 24 will subsequently directly take over the power regulation task without manual intervention or additional configuration.

[0082] S308: The standby charging device sends the standby device information to the Ethernet interface meter according to the meter information in the local area network.

[0083] See also Figure 8B , which is a schematic diagram of the interaction between a backup charging device and an Ethernet interface meter provided in an embodiment of the present application. In a specific implementation, after detecting that the heartbeat response with the target charging device 22 fails, the backup charging device 24 can first broadcast a fault notification in the local area network, indicating that the target charging device 22 can no longer work normally. After receiving the fault notification broadcast by the backup charging device 24, the Ethernet interface meter 21 will return a response message to the backup charging device 24, indicating that the fault notification has been received, and disconnect the communication connection with the target charging device 21, and prepare to establish a new communication connection with the backup charging device 24. See Figure 8C , which is a schematic diagram of the interaction between another backup charging device and an Ethernet interface meter provided in an embodiment of the present application. Subsequently, the backup charging device 24 sends the backup device information to the Ethernet interface meter 21 in response to the received response information. The backup device information includes the IP address and communication port number of the backup charging device.

[0084] In another specific implementation, after detecting that the heartbeat response of the target charging device 22 fails, the standby charging device 24 may not broadcast the fault information, but directly send the standby device information to the Ethernet interface meter 21. The standby device information includes the IP address and communication port number of the standby charging device.

[0085] S309: The Ethernet interface electricity meter sends a communication request to the backup charging device according to the received backup device information, so that the Ethernet interface electricity meter and the backup charging device establish a communication connection.

[0086] The Ethernet interface electric meter 21 sends a communication request to the backup charging device 24 according to the received backup device information, so that the Ethernet interface electric meter 21 and the backup charging device 24 establish a communication connection.

[0087] Therefore, the backup charging device 24 can receive the meter data of multiple charging devices, and manage the discharge power of multiple charging devices based on the received meter data of multiple charging devices, thereby increasing the redundancy and flexibility of the energy management system 20, and ensuring that the energy management system 20 can continue to operate normally when the target charging device 22 fails.

[0088] S310: The Ethernet interface electric meter disconnects the communication connection with the target charging device.

[0089] It should be noted that if the Ethernet interface meter 21 does not disconnect the communication connection with the target charging device 22 in executing step S308 , the Ethernet interface meter 21 may disconnect the communication connection with the target charging device 22 after sending a communication request to the backup charging device 24 .

[0090] S311: If the Ethernet interface electric meter does not receive target device information or backup device information within a first preset time period after broadcasting the electric meter information to multiple charging devices, the Ethernet interface electric meter restarts.

[0091] It should be noted that the above steps S307-S310 explain how to establish a communication connection between the Ethernet interface meter 21 and the backup charging device 24 when the target charging device 22 fails, so as to perform energy management. In actual applications, there is also a situation where the Ethernet interface meter 21 fails, resulting in the inability to broadcast information or receive responses normally. In this case, the restart operation in step S311 is a means of self-repair of the meter.

[0092] See also Fig.8D , this figure is a schematic diagram of restarting an Ethernet interface meter provided in an embodiment of the present application. Specifically, if the Ethernet interface meter 21 has not received the target device information or the backup device information within the first preset time after broadcasting the meter information to multiple charging devices, the Ethernet interface meter 21 believes that there may be a problem with its current communication status. Then, the Ethernet interface meter 21 will perform a restart operation to try to restore normal communication and operation status. Therefore, restarting the Ethernet interface meter 21 can reset the network stack and communication protocol of the Ethernet interface meter 21, which helps to solve communication interruptions caused by software failures, network configuration errors or hardware problems.

[0093] It should also be noted that the above embodiments are all described as the energy management system 20 including one Ethernet interface electricity meter 21 . In actual applications, the energy management system 20 may also include multiple Ethernet interface electricity meters 21 .

[0094] See also Fig. 9, which is a schematic diagram of a single and multiple Ethernet interface meters provided in an embodiment of the present application. In an energy management system 20 including multiple Ethernet interface meters 21, each Ethernet interface meter 21 may be configured as a client and communicate with a target charging device 22 (or a backup charging device). Such a design not only improves the flexibility and scalability of the energy management system 20, but also makes the data collection and energy management of the entire energy management system 20 more efficient and accurate.

[0095] Moreover, the presence of multiple Ethernet interface meters 21 also enables the energy management system 20 to monitor and manage the energy usage in different areas in a more detailed manner. For example, in a charging station, each charging pile or charging area may be equipped with an independent Ethernet interface meter 21 to achieve accurate measurement and statistics of energy usage in each area.

[0096] In summary, the embodiment of the present application provides an energy management system. First, the Ethernet interface meter actively broadcasts meter information including its own IP address and communication port number to multiple charging devices. Secondly, the target charging device sends the target device information including its own IP address and communication port number to the Ethernet interface meter according to the meter information. Finally, the Ethernet interface meter sends a communication request to the target charging device according to the target device information, so that the Ethernet interface meter and the target charging device establish a communication connection. Therefore, because the Ethernet interface meter sends the meter information by broadcasting, each charging device can receive the meter information and choose whether to establish a communication connection with the Ethernet interface meter according to its own needs, thereby avoiding communication failures caused by conflicts between the IP addresses of the Ethernet interface meter and the charging device, and improving the efficiency and accuracy of energy management. In addition, the energy management system provided by the embodiment of the present application can ensure that during peak hours, even if all charging devices work at the same time, the transformer will not be overloaded, thereby extending the service life of the transformer and ensuring the safe and stable operation of the charging station.

[0097] Correspondingly, the present application also discloses a charging station, including the energy management system introduced in the aforementioned embodiment.

[0098] A charging station provided in an embodiment of the present application has the beneficial effects of the energy management system introduced above.

[0099] The "first" and "second" in the names such as "first" and "second" (if any) mentioned in the embodiments of the present application are only used as name identifiers and do not represent the first or second in order.

[0100] Through the description of the above implementation methods, it can be known that those skilled in the art can clearly understand that all or part of the steps in the above-mentioned embodiment method can be implemented by means of software plus a general hardware platform. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a storage medium, such as a read-only memory (ROM) / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network communication device such as a router) to execute the methods described in each embodiment of the present application or some parts of the embodiments.

[0101] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments. The device and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components indicated as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0102] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An energy management system, characterized in that: The system comprises: an Ethernet interface electric meter and a plurality of charging devices, wherein the plurality of charging devices comprises a target charging device; The Ethernet interface meter is used to broadcast meter information to the multiple charging devices, and the meter information includes an Internet Protocol IP address and a communication port number of the Ethernet interface meter; The target charging device is used to send target device information to the Ethernet interface meter according to the received meter information, wherein the target device information includes an IP address and a communication port number of the target charging device; The Ethernet interface electric meter is used to send a communication request to the target charging device according to the received target device information, so that the Ethernet interface electric meter and the target charging device establish a communication connection.

2. The system according to claim 1, characterized in that The system further comprises: a switch connected to the Ethernet interface electric meter and the plurality of charging devices; The Ethernet interface electricity meter is specifically used to broadcast the electricity meter information into the local area network when the Ethernet interface electricity meter and the plurality of charging devices establish a local area network through the switch.

3. The system according to claim 2, characterized in that The target charging device is specifically used to obtain the meter information from the local area network; and send target device information to the Ethernet interface meter through the local area network according to the meter information.

4. The system according to claim 2, characterized in that The plurality of charging devices include a backup charging device; The standby charging device is used to obtain the meter information from the local area network when the heartbeat response between the standby charging device and the target charging device fails; according to the meter information, send the standby device information to the Ethernet interface meter, the standby device information including the IP address and communication port number of the standby charging device; The Ethernet interface electric meter is further used to send a communication request to the backup charging device according to the received backup device information, so that the Ethernet interface electric meter and the backup charging device establish a communication connection.

5. The system according to claim 4, characterized in that The Ethernet interface electric meter is further used to disconnect the communication connection with the target charging device.

6. The system according to claim 4, characterized in that The Ethernet interface electric meter is further configured to restart if the target device information or the backup device information is not received within a first preset time period after the broadcasting of the electric meter information to the multiple charging devices is performed.

7. The system according to claim 1, characterized in that The IP address of the Ethernet interface electric meter is obtained dynamically.

8. The system according to claim 1, characterized in that The target charging device is further used to send a data collection command to the Ethernet interface meter, wherein the data collection command instructs the Ethernet interface meter to collect meter data of the multiple charging devices and send the meter data of the multiple charging devices to the target charging device.

9. The system according to claim 1, characterized in that The charging equipment includes at least one of a charging pile, a charger and a collector.

10. A charging station, characterized in that: The charging station includes the energy management system according to any one of claims 1-9.

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