WO2024083027A1

WO2024083027A1 - Energy block parallel communication method and apparatus

Info

Publication number: WO2024083027A1
Application number: PCT/CN2023/124271
Authority: WO
Inventors: 蒋怀玉; 陈志海
Original assignee: 厦门海辰储能科技股份有限公司
Priority date: 2022-10-17
Filing date: 2023-10-12
Publication date: 2024-04-25
Also published as: CN115664932B; CN115664932A

Abstract

Disclosed in the present invention are an energy block parallel communication method and apparatus, which are applied to an energy storage system. The system comprises a master device and a plurality of slave devices. The master device communicates with the plurality of slave devices by means of a serial interface. The method comprises: a master device receives a first request message issued by a server and used for obtaining the operation information of an energy storage system, and generates first feedback information according to the first request message; the master device separately sends the first request message to a plurality of slave devices, and separately receives second feedback information generated by at least some of the plurality of slave devices according to the first request message; and according to the first feedback information and the second feedback information, the master device generates a first target feedback message carrying the operation information of the energy storage system, and sends the first target feedback message to the server. Because the master device communicates with the slave devices by means of the serial interface, the installation construction workload and the installation cost are reduced, and the stable operation of each energy block is guaranteed. In addition, the influence of the fault of a single energy block on the whole energy storage system is prevented.

Description

Energy block parallel communication method and device

This application claims priority to a Chinese patent application filed with the Chinese Patent Office on October 17, 2022, with application number 2022112847259 and application name “Energy Block Parallel Communication Method and Device”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present application belongs to the field of power electronic control, and specifically relates to a method and device for parallel communication of energy blocks.

Background technique

Energy storage battery management systems generally adopt a three-level architecture, consisting of a master control module, a main control module, and a slave control module. The slave control module is responsible for the voltage and temperature acquisition of the single battery in the module and the battery balancing management; the master control module is responsible for the management of the entire battery cluster, providing real-time monitoring of battery cluster parameters, fault diagnosis, battery state of charge SOC (State of Charge, SOC) estimation, insulation detection, display alarm, remote monitoring, and uploading real-time battery data; the master control module is responsible for numerical calculation, performance analysis, alarm processing and record storage of real-time battery data uploaded by the master control and slave control. In addition, it can realize linkage control with the energy storage converter system (PCS) host, energy storage dispatch monitoring system, etc.

The traditional energy storage system has high installation costs due to the parallel use of multiple units. The centralized arrangement of batteries can easily cause the entire energy storage system to completely fail when a single energy block fails, affecting the stability and safety of product use.

Summary of the invention

In response to the above problems, the example of the present application provides an energy block parallel communication method and device, which enables the master and slave devices to communicate through a serial interface, reduces the installation construction workload and product installation costs, and ensures the stable operation of each energy block at a low cost. In addition, it also solves the impact of a single energy block failure on the entire energy storage system.

To achieve the above-mentioned objectives, in a first aspect, an embodiment of the present application provides an energy block parallel communication method, which is applied to an energy storage system, wherein the energy storage system includes a master device and multiple slave devices, and the master device and the multiple slave devices communicate through a serial interface. The method includes: the master device receives a first request message sent by a server for obtaining operating information of the energy storage system, and generates first feedback information according to the first request message; the master device sends the first request message to multiple slave devices respectively, and receives second feedback information generated by at least some of the multiple slave devices according to the first request message respectively; the master device generates a first target feedback message carrying the operating information of the energy storage system according to the first feedback information and the second feedback information, and sends the first target feedback message to the server.

It can be seen that in the embodiment of the present application, the master and slave devices communicate through a serial interface, realizing local management and communication between the energy storage system and the server, reducing the installation construction workload and product installation cost, ensuring the stable operation of each energy block at a low cost, and also solving the impact of a single energy block failure on the entire energy storage system.

In a second aspect, an embodiment of the present application provides an energy block parallel communication device, the energy block parallel communication device is used to execute an energy block parallel communication method, the energy block parallel communication device includes:

The receiving module is configured to receive, as a main device, a first request message for obtaining the operation information of the energy storage system sent by the server, and generate first feedback information according to the first request message;

The generating module is configured to send the first request message to the plurality of slave devices respectively by the master device, and receive the first request message from the plurality of slave devices respectively. second feedback information generated by at least some of the slave devices in the device according to the first request message;

The sending module is configured to generate a first target feedback message carrying the energy storage system operation information according to the first feedback information and the second feedback information, and send the first target feedback message to the server.

In a third aspect, an embodiment of the present application provides an electronic device, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the one or more instructions are suitable for being loaded by the processor and executing part or all of the method of the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the method of the first aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

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 any creative work.

FIG1 is a schematic diagram of a communication structure of a battery management system provided in an embodiment of the present application;

FIG2 is a schematic diagram of the structure of an energy block parallel communication system provided in an embodiment of the present application;

FIG3 is a schematic diagram of the structure of a household energy storage device system provided in an embodiment of the present application;

FIG4 is a schematic flow chart of a method for parallel communication of energy blocks provided in an embodiment of the present application;

FIG5A is a schematic diagram of a process of determining a new master device when a master device fails, provided by an embodiment of the present application;

FIG5B is a schematic diagram of a process of determining a new master device when a master device fails, provided by an embodiment of the present application;

FIG6 is a schematic diagram of the structure of an energy block parallel communication device provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

Detailed ways

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.

The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but optionally includes steps or modules that are not listed, or optionally includes other steps or modules inherent to these processes, methods, products or devices.

Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The embodiments of the present application are described below in conjunction with the accompanying drawings.

The current battery management system mainly includes three parts: a master control module, a main control module and a slave control module. Please refer to Figure 1, which is a communication structure diagram of a battery management system provided by an embodiment of the present application. As shown in the figure, the battery management system (Battery Management System, BMS) is composed of a master control module, a main control module and a slave control module, wherein the master control module mainly includes an energy management system Energy Management System, EMS) and a battery array unit (Battery Array Unit, BAU), the main control module mainly includes a battery cluster controller (Battery Cluster Unit, BCU), and the slave control module mainly includes a battery module controller (Battery Module Unit, BMU). BMU is responsible for the voltage and temperature collection and battery balancing management of the single battery in the module. An energy block may include more than one battery pack. When there are multiple battery packs in an energy block, each battery pack corresponds to a BMU; BCU is responsible for the management of the entire energy block, providing real-time monitoring of battery cluster parameters, fault diagnosis, battery state of charge SOC (State of Charge, SOC) estimation, insulation detection, display alarm, remote monitoring, and uploading real-time battery data; BAU is responsible for numerical calculation, performance analysis, alarm processing and record storage of real-time battery data uploaded by the master control and slave control. In addition, it can also realize linkage control with the host of the energy storage converter system, the energy storage dispatch monitoring system, etc. This method of communication redistribution between the master control energy management system EMS and the local management requires the installation of a master control energy management system EMS in the energy storage system, which has problems such as high installation difficulty and high installation cost.

In response to the above problems, the present application proposes a method and device for parallel communication of energy blocks, which will be described below with reference to the accompanying drawings.

Please refer to FIG. 2 , which is a schematic diagram of the structure of an energy block parallel communication system provided in an embodiment of the present application; as shown in the figure, the energy block parallel communication system 200 in the figure includes a master device 201, a slave device 2021, a slave device 2022 and a server 203. The master device 201, the slave device 2021 and the slave device 2022 are simplified forms of the energy blocks appearing in FIG. 1 . The master device 201 is used to assign communication addresses to the slave devices 2021 and 2022, communicate with the slave devices 2021 and 2022 according to the communication addresses to obtain the operating information of the energy storage system (system rated power, system rated capacity, etc.), and communicate with the server 203 on behalf of the energy storage system including the master device 201, the slave devices 2021, and the slave devices 2022 to upload operating information or receive control instructions, etc.; the slave devices 2021 and 2022 are used to receive the communication address assigned by the master device and send operating information to the master device, etc.; the server 203 is used to communicate with the master device 201 to receive data sent by the master device 201 and send instructions to the master device 201, etc.

The following is an explanation of the embodiment of the present application in combination with the actual application scenario. Please refer to Figure 3, which is a schematic diagram of the structure of a household energy storage device system provided by the embodiment of the present application; as shown in the figure, the energy storage system includes an energy block master device and several energy block slave devices, and the master device and the slave device are connected in parallel to the AC cable to power the electrical equipment, and the electrical equipment here can be any household appliance such as a television, a refrigerator, a lighting device, and a ventilation device. The master device and the slave device communicate through a communication cable and a serial interface. The master device assigns a communication address to the slave device, and communicates with the slave device according to the communication address to obtain the operating information of the energy storage system (system rated power, system rated capacity, etc.), and communicates with the server 203 on behalf of the energy storage system including the master device and all slave devices, uploads operating information or receives control instructions, etc.

Please refer to FIG. 4 , which is a flow chart of an energy block parallel communication method provided in an embodiment of the present application. As shown in FIG. 4 , it includes steps S401 - S403 .

S401: The master device receives a first request message sent by a server for obtaining operation information of an energy storage system, and generates first feedback information according to the first request message.

Specifically, in the embodiment of the present application, the master device receives the first request message, where the first request message can be an instruction for obtaining the operation data of the energy storage system sent by the server to the master device. After the master device receives the instruction, it obtains its own The operation data generates first feedback information.

In a possible embodiment, before the master device sends a first request message to multiple slave devices respectively, and respectively receives second feedback information generated by at least some of the multiple slave devices based on the first request message, the method also includes: the master device assigns different address information to each of the multiple slave devices, so that the master device and each slave device communicate through a serial interface based on unique address information.

Specifically, the master device and the slave device need to communicate through the communication address. Before the master device sends the first request message to the slave device through the serial interface, it is also necessary to allocate a unique communication address to the slave device. Each independent slave device corresponds to a unique communication address. The unique communication address here includes the address information allocated by the master device to each slave device and the address information of the master device. The master device and the slave device communicate according to the unique communication address. It should be noted that the master device and the slave device are connected through the serial interface. If any of the slave devices fails, the master device can directly bypass the slave device and communicate with the subsequent slave device without failure.

Exemplarily, the server and the master device, and the master device and the slave device can communicate through the RS485 communication protocol. The RS485 communication protocol is an improved protocol for the RS232 communication protocol. It adopts a differential transmission method to solve the common mode interference problem. The maximum distance can reach 1200 meters, and multiple transceiver devices are allowed to be connected to the same bus. The master device and all slave devices communicate on a bus through a serial interface. The master device assigns a unique communication address to each slave device according to the RS485 communication protocol. When the master device and the slave device need to communicate, the master device sends a data packet with a unique communication address to the communication bus. If the communication address information on the data packet corresponding to the unique communication address is consistent with its own pass address information, it sends a response packet to the master device. The master device communicates on the serial interface in this way.

It can be seen that in the embodiment of the present application, the master and slave devices communicate through the serial interface, thereby realizing local management and communication between the energy storage system and the server, reducing the installation cost and construction workload of the additional installation of the master control system, avoiding possible failure of the master control system and thus causing the energy storage system to lose control, ensuring the stable operation of each energy block at a low cost, and avoiding the impact of a single energy block failure on the entire energy storage system.

In a possible embodiment, the master device assigns different address information to each of the multiple slave devices, including: the master device obtains the initial operating time of each slave device; the master device sorts the slave devices according to the initial operating time, determines the address priority of each slave device, and assigns different address information to each slave device in turn according to the address priority.

Specifically, during the installation of the energy storage system, the energy blocks need to be installed in sequence. At this time, the initial operation time of each energy block can be obtained, and then all energy blocks are sorted according to the initial operation time to obtain the installation order list of all energy blocks. The master device can assign different address information to the slave devices in sequence according to the installation order list.

In a possible embodiment, the method further includes: the master device obtains address information sorting results corresponding to multiple slave devices based on multiple address information corresponding to multiple slave devices; the master device sends the address information sorting results to each slave device, so that when a communication failure occurs in the master device, a backup master device can be determined from the multiple slave devices based on the address information sorting results.

Specifically, according to the installation order list, the first installed energy block can be used as the master device of the energy storage system. The master device also allocates a communication address according to the installation order. When the master device fails and cannot communicate, the slave device with the first order in the installation order list determines whether the original master device has stopped running. When the original master device stops running, it is converted to the next master device to replace the original master device.

For example, the master device sends the installation order list to the slave devices. In the installation order list, the first device is the master device, the second and subsequent devices are slave devices, and the second slave device is also the first backup master device. When the second slave device in sequence does not receive the first communication message from the master device within a preset time, it sends a verification message to the master device to detect whether the master device is still online. If no feedback message of the verification message is received after the preset time, it can be inferred that the master device is faulty, and the second slave device in sequence is converted into a master device. In another example, if the battery pack and the slave control module of the master device are damaged, and the main control module is not damaged and detects the fault information, the main control module of the master device sends an indication message to the second slave device in sequence, instructing the slave device to be converted into a master device, and the original master device is shut down and stops running.

For example, please refer to FIG5A, which is a schematic diagram of determining a new master device when a master device fails in a real-time example provided in the present application. As shown in FIG5A, the three energy blocks in the figure are installed according to the installation order from left to right, so it is confirmed that the energy block installed first is master device 1. When master device 1 fails, slave device 1 does not receive the first request message sent by master device 1 after a preset time, and after slave device 1 sends a verification message to master device 1, it does not receive the verification feedback message of the master device after a preset time. At this time, slave device 1 can determine that master device 1 fails, and slave device 1 is converted to master device 2 to manage the communication of the energy storage system and communicate with the server. At this time, master device 1 needs to be shut down due to a failure, disconnect the connection with the AC cable, and stop communication to ensure the normal operation of other energy blocks in the entire storage system. For the convenience of explanation, only two slave devices are listed here, and the actual application scenario should include more slave devices.

In a possible embodiment, the master device and each slave device include at least one energy storage module, and the method further includes: the master device obtains the remaining capacity of the energy storage module in each slave device; the master device sorts the remaining capacity of the energy storage module of each slave device to obtain an energy storage capacity sorting result; the master device sends the energy storage capacity sorting result to each slave device, so that when a communication failure occurs in the master device, a backup master device can be determined from multiple slave devices according to the energy storage capacity sorting result.

Specifically, in addition to confirming the replacement master device according to the installation order of the energy block, the remaining capacity of the energy storage module of the energy block can also be obtained. After the energy block is charged and discharged multiple times, the remaining storage capacity of the energy storage module of the energy block will decrease with the increase in the number of charging and discharging times. The higher the remaining capacity of the energy block, the more stable the energy block will run and the less likely it will fail. After determining the first master device, the master device obtains the remaining capacity of all slave devices, obtains the remaining capacity ranking of the slave devices, and sends the ranking to all slave devices. Referring to the example described in the above embodiment, the master device sends the installation order list to the slave device. When the master device fails, the slave device with the first remaining storage capacity can detect whether the master device is still online by sending a verification message, or receive the instruction information sent by the master device to convert it into a master device to replace the damaged master device.

For example, please refer to FIG. 5B , which is a flow chart of another method of determining a new master device when a master device fails in a real-time example of the present application. As shown in the figure, the remaining capacity of slave device 1 is 70%, and the remaining capacity of slave device 2 is 90%. Therefore, slave device 2 is ranked first and slave device 1 is ranked second. After master device 1 fails, slave device 2 does not receive the first communication message sent by master device 1 after a preset time. After slave device 2 sends a verification message to master device 1, it does not receive a verification feedback message from the master device after a preset time. Therefore, slave device 2 replaces the failed master device 1 as the new master device 2. Slave device 1 continues to be used as a slave device. For the sake of convenience of explanation, only two slave devices are cited here, and more slave devices should be included in the actual application scenario.

It can be seen that in the embodiment of the present application, a communication address is automatically assigned to each slave device according to the installation order of the master device, and when a master device fails, the slave device is automatically determined as a new master device according to the installation order, or the remaining storage capacity of the energy storage module of the slave device is obtained, and the slave device with the best performance, the smallest loss, and the most stable operation is determined as the new master device according to the remaining capacity of the energy storage module of the slave device, thereby ensuring that the normal operation of the energy storage system is not affected when a master device fails, and ensuring the stability of the operation of the energy storage system.

S402: The master device sends the first request message to multiple slave devices respectively, and receives at least one of the multiple slave devices respectively. Second feedback information generated by some slave devices according to the first request message.

Specifically, the first request message here can be an instruction for obtaining the operating data of the energy storage system sent by the server to the master device. After the master device sends the first request message to the slave device, the slave device generates second feedback information according to the content of the first request message and sends it to the master device.

S403: The device generates a first target feedback message carrying the energy storage system operation information according to the first feedback information and the second feedback information, and sends the first target feedback message to the server.

Specifically, the master device generates a first target feedback message according to the second feedback information and the first feedback information sent by the slave device. The first target feedback message here can be the operation data of any number of energy blocks in the energy storage system, the fault report information of the energy block, etc. Each slave device energy block corresponds to a second feedback message. After the first target feedback message is sent to the server, the server receives and stores the first target feedback message. Furthermore, the first target feedback message can also be used for data analysis, safety monitoring, etc.

In a possible embodiment, after the master device assigns different address information to each of the multiple slave devices, the method further includes: the master device sends the pre-stored address information to the server, wherein the pre-stored address information includes the address information corresponding to each slave device; accordingly, after a communication failure occurs in the master device and a backup master device is determined from the multiple slave devices, the method further includes: the backup master device sends a second request message to the server, the second request message is used to obtain the pre-stored address information; the backup master device receives a second target feedback message carrying the pre-stored address information returned by the cloud server, and communicates with other slave devices among the multiple slave devices except the backup master device according to the pre-stored address information.

Specifically, after the master device assigns a communication address to the slave device, the communication address of each slave device is integrated into pre-stored address information and sent to the cloud server for storage. The pre-stored address information here can include the correspondence between the communication address and each slave device. If the master device fails to communicate, the master device used to replace the original master device can directly communicate with other slave devices based on the pre-stored address information stored in the cloud server without the need to reallocate addresses. In one case, the slave devices do not communicate with each other, so the slave devices do not know each other's unique address information. After one of the slave devices is transformed into the next master device, the unique address information needs to be reallocated to the other slave devices. At this time, the communication address of the original master device stored on the cloud server and the correspondence between the slave devices can be obtained, and the communication addresses of other slave devices can be obtained based on the correspondence between the communication address and the slave devices.

It can be seen that in the embodiment of the present application, the pre-stored address information of each slave device is sent to the cloud server by the master device and stored by the cloud server. When the master device fails and the next master device is needed to replace the original failed master device, the pre-stored address information of the slave device sent by the cloud server can be received without reallocating the communication addresses of other slave devices, thereby ensuring the efficiency of replacing the master device after the master device fails, and further ensuring the stability of the operation of the energy storage system.

In a possible embodiment, the first target feedback message includes at least one of the following information: system rated power of the energy storage system, system rated capacity, number of operating energy storage conversion systems PCS, and energy storage system operating data.

Specifically, the server sends the first communication information to the main device to obtain the operation information of the energy storage system, which is used to obtain the operation information of the energy storage system from the main device. The first target feedback message is the information sent by the main device to the server, which may include the system rated power, system rated capacity, and the number of system energy storage converters (Power Conversion System, PCS) in operation. PCS is used to control the charging and discharging process of the battery, perform AC-DC conversion, and can directly supply power to AC loads without a power grid. The operation data of the energy storage system mainly includes the temperature information, voltage information, battery load and other operation data of each energy block.

In a possible embodiment, after the master device obtains part or all of the second feedback information sent by the slave device, the method also includes: the master device determines whether the second feedback information includes a high-risk parameter characterizing that the slave device is in a high-risk state; if the second feedback information includes a high-risk parameter, it is determined that the slave device corresponding to the high-risk parameter is a faulty slave device, and the target feedback information corresponding to the faulty slave device is stored.

Specifically, each slave device energy block corresponds to a second feedback information, and the second feedback information of any energy block in the slave device contains high-risk parameters in a high-risk state, such as temperature exceeding a preset threshold, voltage exceeding a preset threshold, etc. When any high-risk parameter exists in the second feedback information, it can be inferred that the energy block corresponding to the second feedback information has failed, and it is necessary to disconnect the AC connection of the failed energy block, and the failed energy block will stop storing or supplying energy.

In a possible embodiment, the method also includes: when the master device determines that there is a faulty slave device, collecting and processing fault information corresponding to the faulty slave device; if the master device collects the fault information corresponding to the faulty slave device, sending the fault information to the server; if the master device does not collect the fault information of the faulty slave device, determining whether target feedback information corresponding to the faulty slave device is stored locally; if the target feedback information corresponding to the faulty slave device is stored, sending the target feedback information to the server.

Specifically, after confirming that the slave device has failed, it is necessary to collect the fault information of the faulty energy block. The fault information here, i.e., the target feedback information, can be the operation log of the faulty device, which may include historical charge and discharge times, historical operating temperature, historical operating voltage, and other data. If the master device cannot obtain the fault information of the faulty energy block, it proves that the communication hardware of the faulty energy block has also failed. The master device needs to determine whether the historical feedback information of the faulty slave device is stored. The historical feedback information is the feedback information sent to the master device before the communication hardware of the faulty slave device fails. The master device sends the historical feedback information to the cloud server. The cloud server receives the fault information or historical feedback information, which can be used to analyze the cause and solution of the slave device failure.

It can be seen that in the embodiment of the present application, the faulty slave device can be inferred through the high-risk parameters, and the fault information of the faulty slave device is collected and sent to the server. If the faulty device cannot provide fault information, the feedback information sent by the faulty device is sent to the server as historical information. The server can analyze the cause of the fault of the faulty device according to the fault information or feedback information, match solutions, issue warnings, and other operations, thereby further ensuring the stability and safety of the energy storage system operation.

By implementing the method in the embodiment of the present application, multiple energy blocks in the energy storage system are divided into a master device and multiple slave devices to communicate through a serial interface, which reduces the installation cost of the additional installation of the master control system and avoids the possible failure of the master control system, which may lead to the instability of the energy storage system. When the master device fails, the slave device is automatically determined as the new master device according to the installation order, or the remaining storage capacity of the energy storage module of the slave device is obtained. According to the remaining storage capacity of the energy storage module of the slave device, the slave device with the best performance, the smallest loss, and the most stable operation is determined as the new master device. The unique address information of each slave device is sent to the cloud server, which is stored by the cloud server. When the master device fails and the next master device is required to replace the original failed master device, the unique address information of the slave device sent by the cloud server can be received without re-allocating the communication address of other slave devices. It ensures that the energy storage system will not affect the normal operation of the system when the master device fails, thereby ensuring the stability of the operation of the energy storage system. When the slave device fails, the server can analyze the cause of the failure of the failed device, match solutions, issue warnings, etc. according to the fault information or feedback information sent by the master device, further ensuring the stability and safety of the operation of the energy storage system.

Based on the description of the above configuration method embodiment, the present application also provides an energy block parallel communication device 600, the device 600 It can be a computer program (including program code) running in a terminal. The device 600 can execute the method shown in Figures 2 and 3. Please refer to Figure 6, the device includes:

The receiving module 601 is configured to receive, as a main device, a first request message for obtaining operation information of an energy storage system sent by a server, and generate first feedback information according to the first request message;

The generating module 602 is configured to be used for the master device to send the first request message to the multiple slave devices respectively, and to receive the second feedback information generated by at least some of the multiple slave devices according to the first request message respectively;

The sending module 603 is configured to generate a first target feedback message carrying the energy storage system operation information according to the first feedback information and the second feedback information, and send the first target feedback message to the server.

In a possible embodiment, before the master device sends the first request message to multiple slave devices respectively and respectively receives second feedback information generated by at least some of the multiple slave devices according to the first request message, the sending module 603 is also specifically used for: the master device assigns different address information to each of the multiple slave devices, so that the master device and each slave device communicate through the serial interface according to the unique address information.

In a possible embodiment, in terms of the master device assigning different address information to each of the multiple slave devices, the sending module 603 is also specifically used for: the master device obtains the initial running time of each slave device; the master device sorts the slave devices according to the initial running time, determines the address priority of each slave device, and assigns different address information to each slave device in turn according to the address priority.

In a possible embodiment, in terms of determining the backup master device, the sending module 603 is also specifically used for: the master device obtains the address information sorting results corresponding to the multiple slave devices according to the multiple address information corresponding to the multiple slave devices; the master device sends the address information sorting results to each slave device, so that when a communication failure occurs in the master device, the backup master device can be determined from the multiple slave devices according to the address information sorting results.

In a possible embodiment, in terms of determining the backup master device, the sending module 603 is further specifically used for: the master device obtains the remaining capacity of the energy storage module in each slave device; the master device sorts the remaining capacity of the energy storage module of each slave device to obtain an energy storage capacity sorting result; the master device sends the energy storage capacity sorting result to each slave device, so that when a communication failure occurs in the master device, the backup master device can be determined from multiple slave devices according to the energy storage capacity sorting result.

In a possible embodiment, after the master device assigns different address information to each of the multiple slave devices, the sending module 603 is further specifically used for: the master device sends the pre-stored address information to the server, wherein the pre-stored address information includes the address information corresponding to each slave device; accordingly, after a communication failure occurs in the master device and a backup master device is determined from the multiple slave devices, the sending module 603 is further specifically used for: the backup master device sends a second request message to the server, the second request message is used to obtain the pre-stored address information; the backup master device receives the second target feedback message carrying the pre-stored address information returned by the cloud server, and communicates with other slave devices among the multiple slave devices except the backup master device according to the pre-stored address information.

In a possible embodiment, after the master device obtains part or all of the second feedback information sent by the slave device, the sending module 603 is further specifically used for: the master device determines whether the second feedback information includes a high-risk parameter characterizing that the slave device is in a high-risk state; if the second feedback information includes a high-risk parameter, it is determined that the slave device corresponding to the high-risk parameter is a faulty slave device, and the target feedback information corresponding to the faulty slave device is stored.

In a possible embodiment, the sending module 603 is also specifically used for: when the master device determines that there is a faulty slave device, collecting and processing the fault information corresponding to the faulty slave device; if the master device collects the fault information corresponding to the faulty slave device, sending the fault information to the server; if the master device does not collect the fault information of the faulty slave device, determining whether the target feedback information corresponding to the faulty slave device is stored locally; if the target feedback information corresponding to the faulty slave device is stored, sending the target feedback information to the server.

It should be noted that the above modules (receiving module 601, generating module 602, sending module 603) are used to execute the relevant steps of the above method. For example, the receiving module 601 is used to execute the relevant content of step S401, and the generating module 602 is used to execute the relevant content of S402.

Based on the description of the above method embodiments and device embodiments, please refer to Figure 7, which is a structural diagram of an electronic device provided in an embodiment of the present application. The electronic device 700 described in this embodiment, as shown in Figure 7, includes a processor 701, a memory 702, a communication interface 703 and one or more programs. The processor 701 can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the above program. The memory 702 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 702 may exist independently and be connected to the processor 701 through a bus. The memory 702 may also be integrated with the processor 701. The communication interface 703 is used to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. The one or more programs are stored in the memory in the form of program code and are configured to be executed by the processor. In the embodiment of the present application, the program includes instructions for executing the following steps:

The master device receives a first request message sent by the server for obtaining the operating information of the energy storage system, and generates first feedback information according to the first request message; the master device sends the first request message to multiple slave devices respectively, and receives second feedback information generated by at least some of the multiple slave devices according to the first request message respectively; the master device generates a first target feedback message carrying the operating information of the energy storage system according to the first feedback information and the second feedback information, and sends the first target feedback message to the server.

In a possible embodiment, the method further includes: the master device obtains a plurality of address information corresponding to the plurality of slave devices according to the plurality of address information corresponding to the plurality of slave devices. The master device sends the address information sorting result to each slave device, so that when a communication failure occurs in the master device, a backup master device can be determined from the multiple slave devices according to the address information sorting result.

It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the modules, which is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or module can be electrical or other forms.

The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Part or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software functional modules.

If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application can be essentially or partly or all or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a memory, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable memory, and the memory may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

An energy block parallel communication method is applied to an energy storage system, wherein the energy storage system includes a master device and multiple slave devices, and the master device and the multiple slave devices communicate through a serial interface, wherein the method includes:

The master device receives a first request message sent by the server for obtaining the operation information of the energy storage system, and generates first feedback information according to the first request message;

The master device sends the first request message to the multiple slave devices respectively, and receives second feedback information generated by at least some of the multiple slave devices according to the first request message respectively;

The master device generates a first target feedback message carrying the energy storage system operation information according to the first feedback information and the second feedback information, and sends the first target feedback message to the server.
The method according to claim 1, wherein, before the master device sends the first request message to the multiple slave devices respectively and respectively receives second feedback information generated by at least some of the multiple slave devices according to the first request message, the method further comprises:

The master device allocates different address information to each of the multiple slave devices, so that the master device and each of the slave devices communicate via a serial interface according to the unique address information.
The method according to claim 2, wherein the master device assigning different address information to each of the plurality of slave devices comprises:

The master device obtains the initial running time of each of the slave devices;

The master device sorts the slave devices according to their initial operation time, determines the address priority of each slave device, and allocates different address information to each slave device in turn according to the address priority.
The method according to claim 3, wherein the method further comprises:

The master device obtains a sorting result of the address information corresponding to the multiple slave devices according to the multiple address information corresponding to the multiple slave devices;

The master device sends the address information sorting result to each of the slave devices, so that when a communication failure occurs in the master device, a backup master device can be determined from the multiple slave devices according to the address information sorting result.
The method according to claim 2, wherein the master device and each of the slave devices comprises at least one energy storage module, and the method further comprises:

The master device obtains the remaining capacity of the energy storage module in each of the slave devices;

The master device sorts the remaining capacity of the energy storage modules of each of the slave devices to obtain an energy storage capacity sorting result;

The master device sends the energy storage capacity ranking result to each of the slave devices, so that when a communication failure occurs in the master device, a backup master device can be determined from the multiple slave devices according to the energy storage capacity ranking result.
The method according to claim 4 or 5, wherein after the master device assigns different address information to each of the plurality of slave devices, the method further comprises:

The master device sends the pre-stored address information to the server, wherein the pre-stored address information includes the address information corresponding to each of the slave devices;

Accordingly, after a communication failure occurs in the master device and a backup master device is determined from the plurality of slave devices, The method further comprises:

The standby master device sends a second request message to the server, where the second request message is used to obtain the pre-stored address information;

The backup master device receives a second target feedback message carrying the pre-stored address information returned by the cloud server, and communicates with other slave devices among the multiple slave devices except the backup master device according to the pre-stored address information.
The method according to claim 1, wherein the first target feedback message includes at least one of the following information: the system rated power of the energy storage system, the system rated capacity, the number of operating units of the energy storage conversion system PCS, and the energy storage system operation data.
The method according to claim 1, wherein, after the master device obtains the second feedback information sent by the part or all of the slave devices, the method further comprises:

Determining, by the master device, whether the second feedback information includes a high-risk parameter indicating that the slave device is in a high-risk state;

If the second feedback information includes the high-risk parameter, it is determined that the slave device corresponding to the high-risk parameter is a faulty slave device, and the target feedback information corresponding to the faulty slave device is stored.
The method according to claim 8, wherein the method further comprises:

When the master device determines that there is a faulty slave device, collecting and processing fault information corresponding to the faulty slave device;

If the master device collects the fault information corresponding to the faulty slave device, the master device sends the fault information to the server;

If the master device fails to collect the fault information of the faulty slave device, determining whether target feedback information corresponding to the faulty slave device is stored locally;

If target feedback information corresponding to the faulty slave device is stored, the target feedback information is sent to the server.
An energy block parallel communication device, the energy block parallel communication device is used to execute the energy block parallel communication method according to any one of claims 1 to 9, comprising:

a receiving module configured to receive, by the master device, a first request message sent by a server for obtaining the operation information of the energy storage system, and generate first feedback information according to the first request message;

a generating module, configured to enable the master device to send the first request message to the multiple slave devices respectively, and to respectively receive second feedback information generated by at least some of the multiple slave devices according to the first request message;

The sending module is configured to generate, by the master device, a first target feedback message carrying the operation information of the energy storage system according to the first feedback information and the second feedback information, and send the first target feedback message to the server.
An electronic device comprises a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the processor, and the programs include instructions for executing the steps in the energy block parallel communication method as described in any one of claims 1 to 9.
A computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program enables a computer to execute the energy block and communication method according to any one of claims 1 to 9. Communication method.