Data transmission method, protocol converter and monitoring system of energy storage equipment

Abstract

The invention discloses a data transmission method, a protocol converter and a monitoring system of energy storage equipment, and relates to the technical field of data transmission. The protocol converter can obtain the protocol characteristics of the communication protocol adopted by the energy storage equipment, and identifies the target protocol type of the communication protocol based on the protocol characteristics. And then, the protocol converter can perform data format conversion on the data to be transmitted based on the target protocol type, and then transmit the data after format conversion. That is, the protocol converter can adapt to communication protocols of different energy storage devices so as to interact with the energy storage devices of different communication protocols. Therefore, on one hand, efficient and unified monitoring of the energy storage devices with different communication protocols can be realized through the protocol converter, and the compatibility and monitoring efficiency of the energy storage devices with different communication protocols are improved; and on the other hand, the monitoring system comprising the protocol converter can adapt to energy storage equipment with continuously changing communication protocols, and the flexibility and expandability of the monitoring system are enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of data transmission, and in particular to a data transmission method, a protocol converter, and a monitoring system for energy storage equipment. Background Art

[0002] With the widespread application of distributed energy storage technology, photovoltaic inverters need to be monitored. However, photovoltaic inverters from different manufacturers use different communication protocols, and the protocol contents of communication protocols defined by different manufacturers are also quite different.

[0003] As a result, current monitoring equipment cannot interact with photovoltaic inverters from different manufacturers to monitor photovoltaic inverters from different manufacturers. Summary of the invention

[0004] The present application provides a data transmission method, a protocol converter and a monitoring system for energy storage equipment, which can solve the problem that the current monitoring equipment cannot interact with photovoltaic inverters of different manufacturers to monitor photovoltaic inverters of different manufacturers. The technical solution is as follows:

[0005] In one aspect, a data transmission method is provided, the method comprising:

[0006] Acquire protocol characteristics of the communication protocol used by the energy storage device;

[0007] Based on the protocol characteristics, identifying a target protocol type of a communication protocol adopted by the energy storage device;

[0008] Based on the target protocol type, performing data format conversion on the data to be transmitted;

[0009] The data after transmission format conversion.

[0010] Optionally, based on the protocol feature, identifying a protocol type of a communication protocol adopted by the energy storage device includes:

[0011] The protocol type of the communication protocol in the protocol library, whose protocol characteristics match the protocol characteristics of the energy storage device, is determined as the target protocol type of the communication protocol adopted by the energy storage device.

[0012] Optionally, the protocol characteristics include: data packet format, communication frequency and command words.

[0013] Optionally, based on the target protocol type, performing data format conversion on the data to be transmitted includes:

[0014] Receiving a first message from a first device;

[0015] parsing the first message based on the communication protocol adopted by the first device to obtain data to be transmitted, wherein a data format of the data in the first message conforms to the communication protocol adopted by the first device;

[0016] Based on the communication protocol adopted by the second device, convert the data format of the data to obtain the data after format conversion, wherein the data format of the data after format conversion conforms to the communication protocol adopted by the second device;

[0017] The first device is a master station, the energy storage device or an electric energy metering device. When the first device is the master station, the first message is a message sent by the master station to a target device, the second device is the target device, and the target device is the energy storage device or the electric energy metering device.

[0018] In the case where the first device is the target device, the first message is a message uploaded by the target device to the master station, and the second device is the master station.

[0019] Optionally, the communication protocol adopted by the master station is the DTL698.45 protocol;

[0020] The communication protocol adopted by the energy storage device is the Modbus protocol of the target protocol type.

[0021] Optionally, the data after the transmission format conversion includes:

[0022] Encapsulating the format-converted data into a second message;

[0023] The second message is sent to the second device, where the second message complies with the communication protocol adopted by the second device.

[0024] Optionally, the first device is the energy storage device;

[0025] The data to be transmitted is actively reported by the energy storage device, or passively uploaded by the energy storage device in response to an acquisition request.

[0026] In another aspect, a protocol converter is provided, the protocol converter comprising: a processor; the processor is configured to:

[0027] Acquire protocol characteristics of the communication protocol used by the energy storage device;

[0028] Based on the protocol characteristics, identifying a target protocol type of a communication protocol adopted by the energy storage device;

[0029] Based on the target protocol type, performing data format conversion on the data to be transmitted;

[0030] The data after the transmission format conversion.

[0031] On the other hand, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the data transmission method as described in the above aspects is implemented.

[0032] In yet another aspect, a monitoring system for an energy storage device is provided, the monitoring system comprising: an energy storage device, and a protocol converter as described in the above aspect.

[0033] The beneficial effects brought about by the technical solution provided by this application include at least:

[0034] The present application provides a data transmission method, a protocol converter, and a monitoring system for energy storage devices. The protocol converter can obtain the protocol characteristics of the communication protocol adopted by the energy storage device, and identify the target protocol type of the communication protocol based on the protocol characteristics. Then, the protocol converter can perform data format conversion on the data to be transmitted based on the target protocol type, and then transmit the data after the format conversion. That is, the protocol converter can adapt to the communication protocols of different energy storage devices to interact with energy storage devices with different communication protocols. In this way, on the one hand, efficient and unified monitoring of energy storage devices with different communication protocols can be achieved through the protocol converter, thereby improving the compatibility and monitoring efficiency of energy storage devices with different communication protocols; on the other hand, the monitoring system including the protocol converter can adapt to energy storage devices with constantly changing communication protocols, thereby enhancing the flexibility and scalability of the monitoring system.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a monitoring system for energy storage equipment provided in an embodiment of the present application;

[0037] Figure 2 is a structural schematic diagram of another monitoring system for energy storage equipment provided in an embodiment of the present application;

[0038] Figure 3 is a flow chart of a data transmission method provided by an embodiment of the present application;

[0039] Figure 4 It is a structural block diagram of a protocol converter provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0041] The present application provides a monitoring system for energy storage equipment. Figure 1 The monitoring system includes: a plurality of energy storage devices 100 ( Figure 1 Two energy storage devices 100 , a protocol converter 200 , and a master station 300 are shown.

[0042] The protocol converter 200 is connected to each energy storage device 100 and the master station 300 respectively. The types of communication protocols adopted by at least two energy storage devices 100 among the multiple energy storage devices 100 are different. Optionally, each energy storage device 100 can be a photovoltaic inverter or a charging pile. Accordingly, the protocol converter 200 can be a photovoltaic protocol converter.

[0043] In the embodiment of the present application, the protocol converter has functions such as data acquisition, communication protocol conversion, power quality monitoring, and remote / local control. Specifically, the protocol converter can collect the operating parameters of each energy storage device. For each energy storage device among multiple energy storage devices, the protocol converter can identify the protocol type of the communication protocol adopted by the energy storage device, and can perform data format conversion based on the protocol type, so that energy storage devices using different communication protocols can smoothly exchange data with the master station, so that the master station can centrally monitor and manage multiple energy storage devices.

[0044] It is understandable that the communication protocol adopted by the master station is generally the data link layer technology (DLT) 698.45 protocol. The communication protocol adopted by the energy storage device may generally be the Modbus protocol. The protocol converter is usually connected to each energy storage device via an RS485 interface.

[0045] It is also understandable that, see Figure 2 The system may further include a concentrator 400. The protocol converter 200 may be connected to the master station 300 via the concentrator 400. The protocol converter 200 and the master station 300 may exchange data via the concentrator 400.

[0046] The present application embodiment provides a data transmission method, which is applied to a protocol converter in a monitoring system of an energy storage device, such as Figure 1 The protocol converter 200 is shown. Figure 3 , the method comprising:

[0047] Step 101: Acquire protocol characteristics of a communication protocol used by an energy storage device.

[0048] In the embodiment of the present application, after the energy storage device establishes a communication connection with the protocol converter for the first time, the protocol converter can obtain the protocol characteristics of the communication protocol used by the energy storage device. In other words, after the protocol converter establishes a communication connection with the new energy storage device, the protocol characteristics of the communication protocol used by the new energy storage device can be obtained. Among them, the protocol characteristics may include: data packet format, communication frequency, command word, etc.

[0049] For example, after the protocol converter establishes a connection with a new energy storage device, it can send a general query request to the energy storage device, such as reading the identification of the energy storage device. The energy storage device can send a reply message to the protocol converter in response to the query request. Then, the protocol converter can obtain the protocol characteristics of the communication protocol adopted by the energy storage device based on the reply message.

[0050] Step 102: Based on the protocol characteristics, identify the target protocol type of the communication protocol adopted by the energy storage device.

[0051] If the communication protocol adopted by the energy storage device is the Modbus protocol, the target protocol type may be one of the following protocol types: Modbus ASCII, Modbus RTU (Remote Terminal Unit), Modbus TCP / IP, and Modbus UDP / IP.

[0052] In an embodiment of the present application, the protocol converter has a built-in protocol library. The protocol library includes: communication protocols and protocol variants adopted by energy storage devices of various manufacturers. The protocol converter can obtain a communication protocol whose protocol characteristics match the protocol characteristics of the energy storage device from the protocol library, and determine the protocol type of the communication protocol as the target protocol type of the communication protocol adopted by the energy storage device. Among them, the protocol characteristics of a communication protocol match the protocol characteristics of the energy storage device means that: the protocol characteristics of the communication protocol are the same as the protocol characteristics of the energy storage device.

[0053] For example, the protocol converter can traverse the communication protocols in the protocol library. For each traversed communication protocol, the protocol converter can detect whether the protocol characteristics of the communication protocol match the protocol characteristics of the energy storage device. If the protocol converter determines that the protocol characteristics of a certain communication protocol match the protocol characteristics of the energy storage device, the protocol type of the communication protocol can be determined as the target protocol type of the communication protocol of the energy storage device, and the traversal operation ends. Otherwise, the protocol converter can continue to traverse the communication protocols in the protocol library until the traversal is completed.

[0054] Alternatively, the protocol converter pre-stores a protocol type identification model. The protocol converter can input the identified protocol features of the communication protocol used by the energy storage device into the protocol type identification model to obtain the target protocol type of the communication protocol output by the protocol type identification model.

[0055] In an embodiment of the present application, before the protocol feature is input into the protocol type identification model, the protocol converter may obtain a plurality of training data, each of which includes: a protocol feature and a protocol type of a sample communication protocol. Then, the protocol converter may perform model training on the plurality of training data to obtain a protocol type identification model.

[0056] Step 103: Based on the target protocol type, convert the data format of the data to be transmitted.

[0057] In an embodiment of the present application, the protocol converter can receive a first message from a first device, and parse the first message based on the communication protocol adopted by the first device to obtain data to be transmitted. The data format of the data in the first message conforms to the communication protocol adopted by the first device.

[0058] Then, the protocol converter can convert the data format of the data based on the communication protocol adopted by the second device to obtain format-converted data. The data format of the format-converted data complies with the communication protocol adopted by the second device.

[0059] Among them, the first device is a master station, an energy storage device or an electric energy metering device. It can be understood that, in the case of the first device being a master station, the first message is a message sent by the master station to the target device. At this time, the second device is the target device, and the target device is an energy storage device or an electric energy metering device. In the case of the first device being the target device, the first message is a message uploaded by the target device to the master station, and the second device is the master station. The communication protocol adopted by the master station is the DLT698.45 protocol. The communication protocol adopted by the energy storage device is the Modbus protocol of the target protocol type.

[0060] In an embodiment of the present application, when the first device is a master station, after the master station sends a first message, the concentrator can receive the first message and parse the first message to determine the destination address of the first message, thereby determining the device to which the first message is directed. Specifically, if the concentrator determines that the destination address of the first message is the network address of the energy storage device, the first message can be forwarded to the protocol converter, so that the protocol converter can convert the data format of the data to be transmitted in the first message based on the target protocol type of the communication protocol adopted by the energy storage device, so that the converted data format conforms to the communication protocol of the target protocol type.

[0061] If the concentrator determines that the destination address of the first message is the network address of the energy metering system, the concentrator can forward the first message to the energy metering system for processing by the energy metering system. If the concentrator determines that the destination address of the first message is the network address of the concentrator, the concentrator can directly respond to the first message.

[0062] According to the above description, for the DLT698 message sent by the master station, the concentrator can choose to reply in three ways: direct response, sending to the power metering device, and sending to the protocol converter.

[0063] Optionally, if the first message is sent by the energy storage device, the first message may be actively reported by the energy storage device, or may be passively uploaded in response to an acquisition request.

[0064] Step 104: Transmit the data after the format conversion.

[0065] In an embodiment of the present application, after the protocol converter obtains the format-converted data, the format-converted data can be encapsulated into a second message. The second message complies with the communication protocol adopted by the second device. Then, the protocol converter can send the second message to the second device to send the format-converted data to the second device.

[0066] For example, if the first device is a master station and the second device is an energy storage device, the second message may be a Modbus message. If the first device is an energy storage device and the second device is a master station, the second message may be a DLT698 message.

[0067] According to the description of the above steps 103 and 104, after the protocol converter receives the DLT698 message issued by the master station that complies with the DLT698.45 protocol and is targeted at the energy storage device, it can parse the data to be transmitted and convert the data format of the data. Then, based on the format-converted data, a Modbus message that meets the target protocol type of the energy storage device is generated and sent to the energy storage device.

[0068] After receiving the Modbus message for the master station uploaded by the energy storage device, the protocol converter can parse and convert the Modbus message to generate the corresponding DLT698 message, and then upload it to the master station.

[0069] In the embodiment of the present application, when the first message is sent by the energy storage device, after receiving the second message, the concentrator of the monitoring system can perform operations such as data freezing, event recording and reporting. In addition, the monitoring system can also perform operations such as abnormality detection, performance evaluation and energy management on the energy storage device.

[0070] It is understandable that, when communicating with energy storage devices of different manufacturers or models, the protocol converter may adjust the communication mode (such as baud rate) to match the communication protocol or protocol variant adopted by the new energy storage device.

[0071] It is understandable that the order of the steps of the data transmission method provided in the embodiment of the present application can be adjusted appropriately, and the steps can be increased or decreased accordingly according to the situation. Any technician familiar with the technical field can easily think of a change within the technical scope disclosed in this application, which should be included in the protection scope of this application, so it will not be repeated.

[0072] In summary, an embodiment of the present application provides a data transmission method, in which a protocol converter can obtain the protocol characteristics of the communication protocol adopted by the energy storage device, and identify the target protocol type of the communication protocol based on the protocol characteristics. Then, the protocol converter can perform data format conversion on the data to be transmitted based on the target protocol type, and then transmit the data after the format conversion. That is, the protocol converter can adapt to the communication protocols of different energy storage devices to interact with energy storage devices with different communication protocols. In this way, on the one hand, efficient and unified monitoring of energy storage devices with different communication protocols can be achieved through the protocol converter, thereby improving the compatibility and monitoring efficiency of energy storage devices with different communication protocols; on the other hand, the monitoring system including the protocol converter can adapt to energy storage devices with constantly changing communication protocols, thereby enhancing the flexibility and scalability of the monitoring system.

[0073] The present application embodiment provides a protocol converter, see Figure 4 The protocol converter 200 includes a processor 210. The processor 210 is used to:

[0074] Acquire protocol characteristics of the communication protocol used by the energy storage device;

[0075] Based on the protocol characteristics, identify the target protocol type of the communication protocol adopted by the energy storage device;

[0076] Based on the target protocol type, the data to be transmitted is converted into a data format;

[0077] Transmits data after format conversion.

[0078] Optionally, the processor 210 may be configured to:

[0079] The protocol type of the communication protocol whose protocol characteristics match the protocol characteristics of the energy storage device in the protocol library is determined as the target protocol type of the communication protocol adopted by the energy storage device.

[0080] Optionally, protocol characteristics include: data packet format, communication frequency and command words.

[0081] Optionally, the processor 210 may be configured to:

[0082] Receiving a first message from a first device;

[0083] Parsing the first message based on the communication protocol adopted by the first device to obtain data to be transmitted, wherein the data format of the data in the first message conforms to the communication protocol adopted by the first device;

[0084] Based on the communication protocol adopted by the second device, convert the data format of the data to obtain format-converted data, where the data format of the format-converted data complies with the communication protocol adopted by the second device;

[0085] The first device is a master station, an energy storage device or an electric energy metering device. When the first device is a master station, the first message is a message sent by the master station to a target device, the second device is a target device, and the target device is an energy storage device or an electric energy metering device.

[0086] In the case where the first device is the target device, the first message is a message uploaded by the target device to the master station, and the second device is the master station.

[0087] Optionally, the communication protocol adopted by the master station is the DTL698.45 protocol;

[0088] The communication protocol used by the energy storage device is the Modbus protocol of the target protocol type.

[0089] Optionally, the processor 210 may be configured to:

[0090] Encapsulating the format-converted data into a second message;

[0091] A second message is sent to the second device, where the second message complies with the communication protocol adopted by the second device.

[0092] Optionally, the first device is an energy storage device;

[0093] The data to be transmitted is actively reported by the energy storage device, or passively uploaded by the energy storage device in response to an acquisition request.

[0094] In summary, an embodiment of the present application provides a protocol converter, which can obtain the protocol characteristics of the communication protocol adopted by the energy storage device, and identify the target protocol type of the communication protocol based on the protocol characteristics. Then, the protocol converter can convert the data format to be transmitted based on the target protocol type, and then transmit the data after the format conversion. That is, the protocol converter can adapt to the communication protocols of different energy storage devices to interact with energy storage devices with different communication protocols. In this way, on the one hand, efficient and unified monitoring of energy storage devices with different communication protocols can be achieved through the protocol converter, thereby improving the compatibility and monitoring efficiency of energy storage devices with different communication protocols; on the other hand, the monitoring system including the protocol converter can adapt to energy storage devices with constantly changing communication protocols, thereby enhancing the flexibility and scalability of the monitoring system.

[0095] Please continue to see Figure 4 , the protocol converter 200 includes: a processor 210 and a memory 230. The processor 210 and the memory 230 are connected, such as through a bus 220. Optionally, the protocol converter 200 may also include a transceiver 240. It should be noted that in actual applications, the transceiver 240 is not limited to one, and the structure of the protocol converter 200 does not constitute a limitation on the embodiments of the present application.

[0096] The processor 210 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor 210 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0097] The bus 220 may include a path to transmit information between the above components. The bus 220 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 220 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0098] The memory 230 is used to store a computer program corresponding to the data transmission method of the above embodiment of the present application, and the computer program is controlled and executed by the processor 210. The processor 210 is used to execute the computer program stored in the memory 230 to implement the content shown in the above method embodiment.

[0099] The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the data transmission method provided in the above method embodiment is implemented. Figure 3 The method shown.

[0100] An embodiment of the present application further provides a monitoring system for an energy storage device, the monitoring system comprising: an energy storage device, and a protocol converter as provided in the above-mentioned device embodiment.

[0101] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0102] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", 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 application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0104] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0105] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0106] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A data transmission method, characterized in that: The method comprises: Acquire protocol characteristics of the communication protocol used by the energy storage device; Based on the protocol characteristics, identifying a target protocol type of a communication protocol adopted by the energy storage device; Based on the target protocol type, performing data format conversion on the data to be transmitted; The data after the transmission format conversion.

2. The method according to claim 1, characterized in that Based on the protocol feature, identifying the protocol type of the communication protocol adopted by the energy storage device includes: The protocol type of the communication protocol in the protocol library, whose protocol characteristics match the protocol characteristics of the energy storage device, is determined as the target protocol type of the communication protocol adopted by the energy storage device.

3. The method according to claim 2, characterized in that The protocol features include: data packet format, communication frequency and command words.

4. The method according to any one of claims 1 to 3, characterized in that: Based on the target protocol type, data format conversion is performed on the data to be transmitted, including: Receiving a first message from a first device; parsing the first message based on the communication protocol adopted by the first device to obtain data to be transmitted, wherein a data format of the data in the first message conforms to the communication protocol adopted by the first device; Based on the communication protocol adopted by the second device, convert the data format of the data to obtain the data after format conversion, wherein the data format of the data after format conversion conforms to the communication protocol adopted by the second device; The first device is a master station, the energy storage device or an electric energy metering device. When the first device is the master station, the first message is a message sent by the master station to a target device, the second device is the target device, and the target device is the energy storage device or the electric energy metering device. In the case where the first device is the target device, the first message is a message uploaded by the target device to the master station, and the second device is the master station.

5. The method according to claim 4, characterized in that The communication protocol adopted by the master station is the DTL698.45 protocol; The communication protocol adopted by the energy storage device is the Modbus protocol of the target protocol type.

6. The method according to claim 4, characterized in that The data after the transmission format conversion includes: Encapsulating the format-converted data into a second message; The second message is sent to the second device, where the second message complies with the communication protocol adopted by the second device.

7. The method according to claim 4, characterized in that The first device is the energy storage device; The data to be transmitted is actively reported by the energy storage device, or passively uploaded by the energy storage device in response to an acquisition request.

8. A protocol converter, characterized in that: The protocol converter comprises: a processor; the processor is used for: Acquire protocol characteristics of the communication protocol used by the energy storage device; Based on the protocol characteristics, identifying a target protocol type of a communication protocol adopted by the energy storage device; Based on the target protocol type, performing data format conversion on the data to be transmitted; The data after the transmission format conversion.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. A monitoring system for energy storage equipment, characterized in that: The monitoring system comprises: an energy storage device and a protocol converter as claimed in claim 8.

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