CN117785247A

CN117785247A - Equipment upgrading method, device and system of energy storage system

Info

Publication number: CN117785247A
Application number: CN202410206470.7A
Authority: CN
Inventors: 褚强平; 仇成丰; 王建评; 吕鹏凌; 叶敏
Original assignee: Shuangyili Ningbo Battery Co ltd
Current assignee: Shuangyili Ningbo Battery Co ltd
Priority date: 2024-02-26
Filing date: 2024-02-26
Publication date: 2024-03-29

Abstract

The embodiment of the application provides a device upgrading method, device and system of an energy storage system, which comprises the following steps: the energy management system receives the upgrade package through the communication interface and analyzes the upgrade package; the communication interface includes: a network interface; if the analysis result is that the self-upgrading is performed, the energy management system upgrades the self-upgrading according to the upgrade package; if the analysis result is that other equipment is updated, the energy management system forwards the update package to the other equipment so as to update the other equipment, wherein the other equipment comprises: an inverter, and/or a battery management system. The method and the device have the effect of improving the convenience of equipment upgrading in the energy storage system.

Description

Equipment upgrading method, device and system of energy storage system

Technical Field

The present disclosure relates to the technical field of energy storage systems, and in particular, to a method, an apparatus, and a system for upgrading a device of an energy storage system.

Background

The core device of the energy storage system comprises: energy management system (English: energy Management System, abbreviated as EMS), inverter (English: power Conversion System, abbreviated as PCS) and battery management system (English: battery Management System, abbreviated as BMS), these devices need to be updated at irregular intervals when in use, so as to improve the running stability of the whole energy storage system.

At present, a worker needs to go to the site of the equipment, and uses a preset upgrading interface in each equipment to connect with a matched upper computer, and then writes an upgrading packet through the upper computer, so that each equipment finishes upgrading according to the upgrading packet. However, since the upgrade interfaces in different devices are different, and the upper computer software of different manufacturers is also different, the upgrade can be completed only by carrying connection wires corresponding to different upgrade interfaces and installing different upper computers during the upgrade.

However, the inventors recognize that, with respect to the related art in the above, the inventors consider that there are drawbacks: when the energy storage system is upgraded, the equipment of the energy storage system is not convenient to upgrade due to the fact that connecting wires corresponding to upgrade interfaces of different equipment are required to be carried and an upper computer required by the upgrade of the different equipment is required to be installed.

In addition, in the related art, when the upgrade package is transmitted, the complete upgrade package is transmitted as a whole, and transmission failure or transmission error may occur in the transmission process, and when the transmission failure or transmission error occurs, the complete upgrade package needs to be transmitted again, so that the transmission efficiency of data is lower.

Disclosure of Invention

One or more embodiments of the present application provide a method, an apparatus, and a system for upgrading an energy storage system, so as to solve or at least partially alleviate the problem that the equipment of the energy storage system in the related art is not convenient enough to upgrade.

In a first aspect of the present application, a method for upgrading an apparatus of an energy storage system is provided, where the energy storage system includes: the energy management system, and the inverter and the battery management system which are connected with the energy management system, wherein the method is applied to the energy management system and adopts the following technical scheme:

the energy management system receives the upgrade package through the communication interface and analyzes the upgrade package; the communication interface includes: a network interface;

if the analysis result is that the self-upgrading is performed, the energy management system upgrades the self-upgrading according to the upgrade package;

if the analysis result is that other equipment is updated, the energy management system forwards the update package to the other equipment so as to update the other equipment, wherein the other equipment comprises: an inverter, and/or a battery management system.

Wherein the energy management system forwards the upgrade package to the other device, comprising:

The energy management system sends an indication message to the other equipment, wherein the indication message comprises the total byte number corresponding to the upgrade package and an ending symbol of the indication message;

after receiving the response to the indication message, the energy management system divides the upgrade package into a plurality of sub upgrade packages;

the energy management system forwards each sub-upgrade package in turn.

In one embodiment, the energy management system divides the upgrade package into a plurality of sub-upgrade packages, including:

the energy management system divides the upgrade package into a plurality of byte packages according to a preset byte number;

the energy management system adds an ending symbol of each byte packet at the end of the byte packet to form the sub-upgrade packet.

In one embodiment, the forwarding, by the energy management system, each of the child upgrade packages in turn includes:

the energy management system forwards the current sub-upgrade package;

the energy management system retransmits the current sub-upgrade package after receiving a failure receiving response for the current sub-upgrade package until receiving a successful receiving response for the current sub-upgrade package;

And the energy management system forwards the next sub-upgrade package after receiving the successful receiving response aiming at the current sub-upgrade package.

In one embodiment, the energy management system parses the upgrade package, including:

the energy management system acquires equipment keywords in the upgrade package;

the energy management system determines the parsing result according to the device keyword.

In one embodiment, before the energy management system parses the upgrade package, the method further comprises:

the energy management system detects whether the upgrade package is received completely;

if not, the energy management system sends an upgrade package retransmission instruction through the communication interface;

and if the upgrade package is complete, the energy management system analyzes the upgrade package.

In one embodiment, the energy management system receives an upgrade package through a communication interface, comprising:

the energy management system establishes a connection with a cloud;

the energy management system receives an upgrade instruction sent by the cloud end and determines whether the energy storage system needs to be upgraded or not;

if the energy management system determines that the energy storage system needs to be upgraded, the energy management system receives an upgrade package sent by the cloud.

In one embodiment, the energy management system determining whether an upgrade to the energy storage system is required includes:

the energy management system acquires current version information of the energy storage system;

and when the energy management system detects that the current version information and the version information to be upgraded are different, determining that the energy storage system needs to be upgraded.

and the energy management system stores the upgrade package into a processing area to be upgraded preset in the energy management system.

Compared with the related art, one or more embodiments of the present application include at least one of the following beneficial technical effects: the EMS can acquire an upgrade package required by the upgrade of each device in the energy storage system through the network interface, and then the EMS sends the upgrade package to other devices in the corresponding energy storage system through the established communication connection line, so that each device can complete the upgrade of the EMS according to the upgrade package.

In addition, in the transmission process of forwarding the upgrade package to other equipment, the upgrade package is divided into a plurality of sub-upgrade packages, so that in the transmission process, if an error occurs, only the sub-upgrade package with the error is required to be transmitted, and the complete upgrade package is not required to be transmitted, compared with the retransmission of the complete upgrade package when the transmission occurs in the related technology, the sub-upgrade package is smaller than the complete upgrade package, the transmission speed is faster, and the transmission efficiency of data is improved.

In a second aspect of the present application, there is provided an apparatus upgrade device for an energy storage system, the energy storage system comprising: the device is applied to the energy management system, and adopts the following technical scheme:

and an inverter and a battery management system connected to an energy management system to which the apparatus is applied, the apparatus comprising:

the receiving module is used for receiving the upgrade package through the communication interface and analyzing the upgrade package; the communication interface includes: a network interface;

the upgrading module is used for upgrading the self according to the upgrading packet if the analysis result is that the self is upgraded;

The sending module is configured to forward the upgrade package to other devices to upgrade the other devices if the analysis result is that the other devices are upgraded, where the other devices include: an inverter, and/or a battery management system.

In a third aspect of the present application, a device upgrade system for an energy storage system is provided, comprising a memory and a processor; the memory is configured to store a computer program, and the processor is configured to implement the device upgrade method of the energy storage system according to any one of the embodiments above when the computer program is executed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following brief description will be given to the accompanying drawings of the embodiments, and it is apparent that the accompanying drawings in the following description relate only to some embodiments of the present application, not to the limitation of the present application.

Fig. 1 is a flow chart of a method for upgrading a device of an energy storage system according to some embodiments of the present application.

Fig. 2 is a flow diagram of an upgrade with a cloud platform according to some embodiments of the present application.

Fig. 3 is an architecture diagram of a device upgrade of an energy storage system according to some embodiments of the present application.

Fig. 4 is a flow chart illustrating an EMS sending an upgrade package to a PCS according to some embodiments of the present application.

Fig. 5 is a flow chart of an upgrade with a host computer according to some embodiments of the present application.

FIG. 6 is a flow diagram of upgrades with a mobile storage device according to some embodiments of the present application.

Fig. 7 is a schematic structural diagram of a device upgrade apparatus of an energy storage system according to some embodiments of the present application.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings showing various embodiments according to the present application, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments described herein, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising," "including," "having," "containing," and the like in the description of the present application and in the claims and drawings are used for open ended terms. Thus, a method or apparatus that "comprises," includes, "" has "or" has, for example, one or more steps or elements, but is not limited to having only the one or more elements. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be understood that the terms "center," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

As noted above, it should be emphasized that the term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The terms "a" and "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means that the value mentioned is plus or minus 10%, or more specifically plus or minus 5%. The term "or" as used in the claims means "and/or" unless explicitly indicated to the contrary, only alternatives are indicated.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

One or more embodiments of the present application disclose a device upgrade method of an energy storage system. The energy storage system includes an energy management system (Energy Management System, abbreviated as EMS), and an inverter (Power Conversion System, abbreviated as PCS) and a battery management system (Battery Management System, abbreviated as BMS) connected to the energy management system, that is, the EMS is connected to the PCS and the BMS, respectively, and the method in the present application is applied to the EMS, and referring to fig. 1, the device upgrading method of the energy storage system in the present embodiment includes:

step S101, the energy management system receives the upgrade package through the communication interface and analyzes the upgrade package; the communication interface includes: a network interface.

The EMS may receive the upgrade package through its own network interface.

Step S102, if the analysis result is that the self-upgrading is performed, the energy management system upgrades the self-upgrading according to the upgrade package.

Step S103, if the analysis result is that other devices are updated, the energy management system forwards the update package to the other devices to update the other devices, where the other devices include: an inverter, and/or a battery management system.

After the EMS receives the upgrade package through the network interface, the upgrade package is analyzed to detect which device in the energy storage system the received upgrade package is, if the upgrade package is the upgrade package of the EMS, the upgrade package is directly updated to the device of the EMS, and if the upgrade package is the upgrade package of other devices, the upgrade package is forwarded to the other devices through established communication lines with the other devices.

In one embodiment, the parsing of the upgrade package by the energy management system in step S102 may further include the following sub-steps S1021-S1022:

s1021, the energy management system acquires the equipment keywords in the upgrade package.

S1022, the energy management system determines the analysis result according to the device key words.

The analysis result at this time may be an indication of which device to be upgraded corresponds to the upgrade package.

Wherein a device key is an identification that can be used to uniquely characterize a device, such as: the device key may be an english abbreviation for device.

In one embodiment, when determining which device to upgrade the upgrade package is, the EMS may first save the received upgrade package in a preset processing area to be upgraded, and then determine the analysis result.

When the energy storage system is upgraded, any one of the devices in the energy storage system can be upgraded, and all the devices in the energy storage system can be upgraded at the same time. In this embodiment, the device upgrading method of the energy storage system is applied to the EMS in the energy storage system, that is, the EMS is used as a repeater when other devices are upgraded. The EMS obtains the upgrade package required by the whole energy storage system during upgrade through a network interface arranged by the EMS, after obtaining the upgrade package, the device key words in the upgrade package are used for determining which device the current upgrade package is based on, if the devices to be upgraded are PCS and BMS, the upgrade package is sent to the corresponding devices through communication lines established by the EMS and the PCS and BMS, so that the PCS and the BMS can upgrade the devices according to the received upgrade package, and if the devices to be upgraded are EMS, namely, the devices to be upgraded are self, the devices are directly upgraded according to the upgrade package.

The implementation scheme of each device when upgrading itself according to the upgrade package is similar to that in the related art, and will not be repeated here.

For example: when the EMS upgrades the self equipment, the shell programming grammar can be used for placing an upgrade package on a corresponding path, writing an upgrade flag bit, restarting the equipment, when restarting, the system starts a pre-prepared upgrade script, detects whether the upgrade package and the upgrade flag bit exist or not by using the upgrade script, decompresses and replaces corresponding files to a designated position if the upgrade package exists, deletes the upgrade package, endows the upgraded new equipment with executing authority, then starts EMS service, can start a buzzer to prompt successful upgrade after successful upgrade, and can perform functions such as charging and discharging.

In this embodiment, the EMS may acquire an upgrade package required for upgrading each device in the energy storage system through the network interface, and then the EMS sends the upgrade package to other devices in the corresponding energy storage system through the communication connection line that has been established, so that each device completes its own upgrade according to the upgrade package, and since it does not need to use an upgrade interface preset in each device, it does not need to install a matched upper computer, and it does not need to carry a corresponding connection line to complete writing of the upgrade package to each device, thereby improving convenience of device upgrade in the energy storage system.

Moreover, in the related art, different devices in the energy storage system need to be upgraded individually, each device must be in a shutdown state from the start of receiving an upgrade package until the end of upgrading, so that the shutdown time of the device is long.

By way of example, the network interfaces described above include, but are not limited to: wireless network interfaces and wired network interfaces, wherein the wireless network interfaces include, but are not limited to: an interface corresponding to the cellular mobile communication technology and a wireless fidelity (English: wireless Fidelity, abbreviated as Wi-Fi) interface.

The interfaces corresponding to the cellular mobile communication technology include, but are not limited to: third generation mobile communication technology (English: 3rd-Generation Mobile Communication Technology, abbreviated as 3G), fourth generation mobile communication technology (English: 4th-Generation Mobile Communication Technology, abbreviated as 4G), and third generation mobile communication technology (English: 5th-Generation Mobile Communication Technology, abbreviated as 5G).

When the EMS equipment receives the upgrade package through the wireless network interface, the relevant upgrade package can be received and transmitted through interaction with the cloud platform, and when the equipment is upgraded through the wireless network interface, workers do not need to reach the place of the equipment, and equipment in the energy storage system can be upgraded through interaction between the remote equipment and the cloud, so that the problem that the equipment is upgraded in the place where the project is required to run is solved, and the upgrade cost is greatly reduced.

At this time, the energy management system in step S101 receives the upgrade package through the communication interface, including the following substeps S1011-S1013:

s1011, the energy management system establishes connection with the cloud.

S1012, the energy management system receives the upgrade instruction sent by the cloud and determines whether the energy storage system needs to be upgraded.

S1013, if the energy management system determines that the energy storage system needs to be upgraded, the energy management system receives an upgrade package sent by the cloud.

As shown in fig. 2, an upgrade package is uploaded in a cloud platform webpage by a cloud platform administrator, a device keyword is written in the upgrade package, then the communication connection is established between the EMS and the cloud, whether the connection is successfully established is detected, if the connection between the EMS and the cloud fails, the communication connection is reestablished, if the connection between the EMS and the cloud is successful, the cloud issues an upgrade instruction to the EMS device, the upgrade instruction includes version information (for example, version number) to be upgraded, after the upgrade instruction is received by the EMS device through the MQTT protocol, whether the upgrade is required is checked according to the version information to be upgraded, if the upgrade is not required, an upgrade step is canceled, if the upgrade is required, the EMS applies for authorizing temporary device download links to the cloud platform, the cloud platform receives the application, and confirms distribution of temporary upgrade package download links (for example, the temporary upgrade package download links fail within 10 minutes), and sends upgrade package download links to the EMS, after the upgrade package download links are acquired by the EMS device, the upgrade package download links, the upgrade package is started to be downloaded to a preset upgrade processing area by using the http protocol, if the upgrade package is not required, and after the upgrade is successfully performed, the upgrade package is analyzed, and the upgrade process flow is understood.

As shown in fig. 3, when the network interface is a wireless network interface, the EMS may remotely obtain an upgrade packet required for upgrading each device in the energy storage system through the network interface, in order to ensure the reliability of the upgrade, in an environment where a wireless network is available, the wireless network interface (for example, a cloud platform) is preferentially used for upgrading the device, and in a special case where the wireless network is disabled or a wireless network signal, a wired network interface may also be used, for example: and the WEB end is connected with the EMS equipment through a network cable to upgrade the equipment or the upper computer is connected with the EMS equipment through the network cable to upgrade the equipment.

Because the EMS is used as the repeater in the application to send the corresponding upgrade package to other devices (PCS and BMS), and the daily communication interfaces of the EMS, the PCS and the BMS are used as the upgrade interfaces in the application, the daily communication of the EMS, the PCS and the BMS is not required to be interrupted in the process of transmitting the upgrade package, and the upgrade interfaces are shared with the daily communication interfaces so as not to influence the daily communication, the application can use the message format which is different from the normal interaction data in the daily communication, so that the continuous operation of the main thread is not influenced, the ongoing charge and discharge processes of a user are not influenced, and the non-inductive upgrade energy storage system is realized.

In one embodiment, the energy management system forwards the upgrade package to other devices in step S103, including the following sub-steps A1-A3:

a1, the energy management system sends an indication message to other equipment, wherein the indication message comprises the total byte number corresponding to the upgrade package and an ending symbol of the indication message.

For example, the energy management system may send an indication message of a first preset message sending format to the device to be upgraded. The message format of the indication message sent by the first preset message sending format is different from that of the message format of the normal interaction data, for example: the format of the indication message may be: filesize+ < EOF >, where filesize is the total number of bytes corresponding to the upgrade package, and < EOF > is an end indicator of the indication message, e.g., 0x55, which may be indicative of the end of the transmission of the indication message, and in one embodiment, may be transmitted in 4 frames.

In one embodiment, in order to ensure the security of data transmission, an upgrade password may be further added to the indication message sent by the first preset message sending format, for example: the indication message format is: password+filesize+ < EOF >, where password refers to the upgrade password agreed by EMS and other devices, filesize is the total number of bytes corresponding to the upgrade package, and < EOF > is the terminator.

A2, after receiving the response to the indication message, the energy management system divides the upgrade package into a plurality of sub upgrade packages.

In one embodiment, step A2 comprises the sub-steps of: a21-a22:

a21, the energy management system divides the upgrade package into a plurality of byte packages according to the preset byte number.

A22, the energy management system adds an ending symbol of each byte packet at the end of each byte packet to form a sub-upgrade packet.

For example, the preset byte number may be 128 bytes, that is, the upgrade packet is divided into a plurality of byte packets according to the 128 byte number, and then an end symbol < EOF > of the byte packet is added at the end of each byte packet, where the packet corresponding to the sub upgrade packet is: data + < EOF >, wherein data is a byte packet of 128 bytes, if sent by using a CAN interface, one sub-upgrade packet CAN be transmitted by using a 22-frame CAN message, and the upgrade packet receiving device CAN know that the transmission of the current sub-upgrade packet is completed through the ending symbol of the byte packet.

It is noted that in the partitioning of byte packets, if the byte count of the last packet byte packet is less than the preset byte count, the < EOF > padding may be used, continuing with the example above: if the last byte packet has only 120 bytes, not 128 bytes, the < EOF > can be used to fill the 8 byte hole.

A3, the energy management system forwards each sub-upgrade package in turn.

The other devices receive the indication message and respond correspondingly, for example: other devices may reply with either an < ACK > or a < NACK >. Wherein < ACK > is a correct answer 0xAA indicating that the indication message has been successfully received, and < NACK > is an abnormal answer 0xBB indicating that the indication message has failed to be received, when the EMS receives the < ACK > of other devices, transmission of each sub-upgrade packet will be started, when the EMS receives the < NACK > of other devices, the indication message will be retransmitted until the < ACK > is received, and transmission of each sub-upgrade packet will be started.

In one embodiment, step A3 includes the following sub-steps A31-A33:

a31, the energy management system forwards the current sub-upgrade package.

A32, the energy management system retransmits the current sub-upgrade package after receiving the failure receiving response for the current sub-upgrade package until receiving the successful receiving response for the current sub-upgrade package.

A33, the energy management system forwards the next sub-upgrade package after receiving a successful receiving response aiming at the current sub-upgrade package.

The EMS may send the sub-upgrade packets to the PCS and the BMS one by one, and after the first sub-upgrade packet is sent, if a successful reception response of other devices for the current sub-upgrade packet is received, for example: < ACK >, the next subupgrade packet is forwarded continuously, if a failed reception response of other devices for the current subupgrade packet is received, for example: < NACK >, the EMS retransmits the current sub-upgrade packet until < ACK > is received, and then forwards the next sub-upgrade packet until all sub-upgrade packets are transmitted.

In this embodiment, in the transmission process of forwarding the upgrade package to other devices, the upgrade package is divided into a plurality of sub-upgrade packages, so that in the transmission process, if an error occurs, only the sub-upgrade package with the error needs to be transmitted, and the complete upgrade package does not need to be transmitted, compared with the retransmission of the complete upgrade package when the transmission occurs in the related art, the sub-upgrade package is smaller than the complete upgrade package, the transmission speed is faster, and the transmission efficiency of data is improved.

As shown in fig. 4, taking an example in which the EMS transmits an upgrade packet to the PCS:

as shown in fig. 3, when the EMS and the PCS are connected through the CAN, the EMS first obtains the file name and the byte number of the upgrade package, and then prepares the first package according to the file name and the byte number of the upgrade package (english: packet, i.e., the indication message in the above embodiment), repackaging the first packet into a CAN frame, where the first packet format is a packet+filesize+ < EOF >, the packet refers to an upgrade password agreed by the EMS and the PCS, the filesize is a total byte number corresponding to the upgrade packet, the < EOF > is an terminator 0x55, the first packet is transmitted in 4 frames, the PCS will reply correspondingly after receiving the first packet data, the < ACK > is a correct reply 0xAA, indicating that the first packet data is successfully received, the < NACK > is an abnormal reply 0xBB, indicating that the first packet data is not successfully received, retransmitting the first packet data when the < NACK > of the PCS is received by the EMS, dividing the upgrade packet file into n 128 byte packets when the < ACK > of the PCS is received by the EMS, filling with < EOF > if the last packet is less than 128 bytes, then repacking each byte packet of 128 bytes, adding an end symbol < EOF > of 4 bytes to form sub-upgrade packets, when the EMS receives the < ACK > of PCS, starting transmission of 128 byte data packets in sequence, and sending the data+EOF > in a data+EOF format, wherein the data is the byte packet of 128 bytes, and totally dividing the data into 22 frames of CAN message transmission, PCS replies to each sub-upgrade packet, if the receiving is successful, replying to < ACK >, if the receiving is failed, replying to < NACK >, if the EMS receives < ACK >, the EMS will continue sending the next sub-upgrade packet, if the EMS receives < NACK >, retransmitting the current sub-upgrade packet until the last sub-upgrade packet is transmitted, so as to complete the transmission of the whole upgrade packet, the message definition is distinguished from normal interaction data, the continuous operation of the main thread is not influenced, and the noninductive upgrading is realized.

It is noted that, not only CAN the CAN interface be used, but also the network port CAN be used, and the RS485 serial port CAN be used. The present application is not limited to the manner of transmission.

As shown in fig. 3, when the WEB terminal is used to perform device upgrade through connection between the WEB terminal and the EMS device, the flow at this time is as follows:

the method comprises the steps that EMS and computer WEB are connected locally through a network cable, an IP address of the EMS is input into a browser of the computer, a WEB webpage is logged in and enters an upgrade interface, an administrator uploads an upgrade package to a to-be-upgraded processing area preset in an energy management system in a file stream mode when using the computer to upload the upgrade package, the files before upgrade are backed up, compression processing is carried out, the files are downloaded to a computer browser storage directory through the browser, after backup is completed, the computer issues an upgrade instruction to the EMS, the upgrade instruction comprises upgrade version information (for example, version number) of equipment to be upgraded, after the EMS equipment receives the upgrade instruction through the network cable, whether the upgrade is needed or not is checked according to the version information of the equipment to be upgraded, if the upgrade is not needed, the upgrade step is canceled, if the upgrade package is needed, the upgrade package is received, the upgrade package is downloaded to the to-be-upgraded processing area preset in the energy management system, the equipment confirms the type of the equipment to be upgraded corresponding to the upgrade package after the upgrade package is downloaded successfully, and then the process flow of the upgrade package is distributed.

As shown in fig. 3, when the upper computer is used to perform equipment upgrade through connection between the network cable and the EMS equipment, the flow at this time is as follows:

as shown in fig. 5, the EMS portal is connected to the host computer by a network cable, and the host computer needs to establish a modbus connection with the EMS through the network cable, for example, the host computer is connected to the EMS through a 502 port of 192.168.1.136. Detecting whether the modbus connection can be established or not, if the modbus connection can not be established, reestablishing the modbus connection, if the modbus connection can be established, putting an upgrade package on a Windows system desktop or other hard disks of an upper computer by a user, clicking an upgrade button of the upper computer displayed on the desktop of the computer by the user, popping up a file dialog box at the moment, prompting the user whether to select upgrade, canceling upgrade if the user selects No, and starting to transmit the upgrade package if the user selects Yes.

The upgrade package transmission can adopt a custom protocol, and can run on the sub-thread without affecting the operation of the main thread. For example: the port of the modbus is 9996, and at the moment, a port 9997 different from the port of the modbus can be adopted for transmitting the upgrade packet, so that the read-write of the modbus cannot be influenced. For example, to transmit an upgrade packet with a 2000 byte name of EMS, the host computer sends a start frame to the EMS (the indication packet in the above embodiment includes not only the total number of bytes corresponding to the upgrade packet and the end indicator of the indication packet, but also a transmission start signal, a frame sequence number, a source directory and a target directory of the upgrade packet, and the end indicator of the indication packet may be a check symbol corresponding to CRC check), and tells the EMS the start signal and the name and size of the transmission file, where the message format is shown in table 1:

TABLE 1

The EMS returns an accept frame 0xaa 0x00 (corresponding to the response to the indication message in the above embodiment) after receiving the start frame, where 0x00 represents the received start frame with the sequence number 0.

If the EMS returns an acceptance frame to the upper computer, the upper computer continues to send a 3-frame 512-byte file transmission frame (the 3-frame 512-byte file transmission frame corresponds to a transmission frame corresponding to the sub-upgrade package in the above embodiment, where the file transmission frame includes not only the content in the sub-upgrade package, but also the transmission signal and the frame sequence number of the current frame, the byte number of the current frame, and the ending symbol at this time may be a check symbol corresponding to the CRC check), where each frame needs the EMS to return an acceptance frame to tell the EMS that the first 512-byte file content, and the message format at this time is shown in table 2:

TABLE 2

After receiving the first file transmission frame, the EMS returns an accept frame 0xbb 0x01, where 0x01 represents the file transmission frame with sequence number 1. Then the upper computer sends the second 512 byte file transmission frame, and the EMS returns to 0xBB. If the EMS returns 0xFF 0x01, which represents that the EMS verifies that the file transmission frame with the sequence number of 1 is lost or wrong, the upper computer needs to resend the frame, and 3 continuous 0 xFFs are transmitted to terminate, so that upgrading is canceled. The cycle is 3 times, the rest 464 bytes, the upper computer sends the last frame end frame, the message format at this time is shown in table 3:

TABLE 3 Table 3

After receiving the last frame of file transmission frame, EMS checks whether the file name, the file directory and the file size are correct according to the frame sequence number, if so, the EMS returns to the receiving frame 0xCC 0x04, and the upper computer informs the EMS to protect the site and carries out the processing distribution flow of the upgrade package through the modbus after receiving the return frame.

In one embodiment, the energy management system determining whether an upgrade to the energy storage system is required in step S101 includes the following sub-steps B1-B3:

and B1, the energy management system acquires current version information of the energy storage system.

And B2, when the energy management system detects that the current version information and the version information to be upgraded are different, determining that the energy storage system needs to be upgraded.

Taking the cloud platform as an example, if a user uploads an upgrade package in the cloud platform, the cloud platform sends an upgrade instruction to the EMS, the upgrade instruction comprises version information to be upgraded of the energy storage system, after the EMS receives the upgrade instruction, the EMS can actively determine whether the energy storage system needs to be upgraded according to the version information to be upgraded of the energy storage system, if the energy storage system is judged to be upgraded, the upgrade package resending instruction is sent to the cloud platform, the upgrade package resending instruction requests the cloud platform to send the upgrade package, if the energy storage system is judged not to be upgraded, the upgrade package resending instruction is not sent to the cloud platform, and at the moment, an instruction for indicating that the upgrade is not needed or no instruction is sent.

The energy management system may store version information of the current energy storage system.

In another embodiment, the energy management system may further store version information of each device in the current energy storage system, at this time, if the user uploads an upgrade packet in the cloud platform, the cloud platform may send an upgrade instruction to the EMS, where the upgrade instruction includes version information to be upgraded corresponding to the device to be upgraded, after the EMS receives the upgrade instruction, the EMS may actively determine whether the device to be upgraded needs to be upgraded according to the version information to be upgraded, if it is determined that the device to be upgraded needs to be upgraded, send an upgrade packet retransmission instruction to the cloud platform, where the upgrade packet retransmission instruction requests the cloud platform to send an upgrade packet, if it is determined that the device to be upgraded does not need to be upgraded, no upgrade packet retransmission instruction may be sent to the cloud platform, and at this time, an instruction for indicating that no upgrade is needed, or no instruction is sent.

In one embodiment, the following sub-steps C1-C3 are further included before the energy management system in step S101 parses the upgrade package:

and C1, the energy management system detects whether the upgrade package is completely received.

And C2, if the energy management system is incomplete, the energy management system sends an upgrade package retransmission instruction through a communication interface.

And C3, if complete, the energy management system analyzes the upgrade package.

After the EMS receives the upgrade packet, it is further required to detect whether the received upgrade packet is complete, so as to avoid upgrade failure, specifically, a CRC check method may be used to detect the integrity of the upgrade packet, and the specific CRC check method is similar to that in the related art, and will not be described herein.

When the wireless network is disabled or no special conditions such as network signals exist, the device can be upgraded by using a wired network interface, and can also be upgraded by using mobile storage devices such as a USB flash disk or an SD card.

In another embodiment, the communication interface in the present application may further include: an interface corresponding to the mobile storage device; the device upgrading method of the energy storage system further comprises the following substeps D1-D4:

d1, when the interface corresponding to the mobile storage device is inserted into the mobile storage device, the energy management system establishes connection with the mobile storage device.

And D2, the energy management system detects whether the upgrade package is stored in the mobile storage device.

And D3, if the energy storage system is stored, determining whether the energy storage system needs to be updated.

And D4, if the energy management system determines that the energy storage system needs to be upgraded, the energy management system receives an upgrade package sent by the mobile storage device.

By way of example, the mobile storage device may include: USB disk [ english: a universal serial bus (English: universal Serial Bus, abbreviated as USB) flash disk, abbreviated as: u disk ], or secure digital memory card (English: secure Digital Memory Card, abbreviated to: SD card), the corresponding interface of the corresponding mobile memory device is: a USB interface or an SD card interface.

When the mobile storage device is used for transmitting the upgrade package, the upgrade package and the upgrade script can be copied into the mobile storage device in advance, the mobile storage device is plugged into the EMS device, the EMS device can automatically check whether the upgrade package is stored in the mobile storage device, if the upgrade package is stored, whether the energy storage system needs to be upgraded is determined according to version information in the upgrade package, if the energy storage system needs to be upgraded, the energy management system receives the upgrade package sent by the mobile storage device, and a specific upgrade method is similar to the steps S102 and S103 and is not repeated.

The present application also provides a scheme when using the mobile storage device to upgrade the EMS itself, where the flowchart is shown in fig. 6, the upgrade package may be copied into the mobile storage device in advance, after the mobile storage device (U disc or SD card) is plugged into the EMS device, the EMS device is directly restarted, and the EMS device may automatically check whether the upgrade package exists in the mobile storage device, if not, the original system is directly started, if so, the upgrade package is executed to upgrade, the upgrade package in the mobile storage device is decompressed, and the upgrade operation is performed, where the upgrade operation is completed to delete the upgrade package in the mobile storage device, then a new system is started, and the new system is started successfully to extract the mobile storage device.

In one embodiment, not only the upgrade package may be copied to the mobile storage device in advance, but also the upgrade script may be copied to the mobile storage device at the same time, and the implementation scheme when the upgrade package and the upgrade script are used for upgrading is similar to that in the related art, and will not be repeated here.

In this application, can carry out 3S (EMS, PCS, BMS) upgrading through portable modes such as USB flash disk, SD card, webpage, host computer, solved the upgrading personnel and carry the pencil many, the problem that installation software is many has reached convenient operation for the effect that equipment upgrades more convenient.

Another embodiment of the present invention provides an apparatus upgrade device of an energy storage system, the energy storage system including: an energy management system to which the apparatus is applied, and an inverter and a battery management system connected to the energy management system, as shown in fig. 7, an apparatus upgrade apparatus of the energy storage system, comprising:

the receiving module 11 is configured to receive an upgrade package through a communication interface, and parse the upgrade package; the communication interface includes: a network interface.

And the upgrading module 12 is used for upgrading the self according to the upgrading packet if the analysis result is that the self is upgraded.

A sending module 13, configured to forward the upgrade package to another device to upgrade the other device if the analysis result indicates that the other device is upgraded, where the other device includes: an inverter, and/or a battery management system.

In one embodiment, the transmitting module 13 includes:

and the first sending submodule is used for sending an indication message to the other equipment, wherein the indication message comprises the total byte number corresponding to the upgrade package and the ending symbol of the indication message.

And the first dividing sub-module is used for dividing the upgrade package into a plurality of sub-upgrade packages after receiving the response to the indication message.

And the first forwarding sub-module is used for forwarding each sub-upgrade package in turn.

In one embodiment, a first scoring sub-module includes:

the first dividing subunit is configured to divide the upgrade packet into a plurality of byte packets according to a preset byte number.

And the first adding subunit is used for adding the ending symbol of each byte packet at the end of each byte packet to form the sub-upgrading packet.

In one embodiment, a first rotor module comprises:

the first forwarding subunit is used for forwarding the current sub-upgrade package;

And the first sending subunit is used for retransmitting the current sub-upgrading packet after receiving the failed receiving response aiming at the current sub-upgrading packet until receiving the successful receiving response aiming at the current sub-upgrading packet.

And the second sending subunit is used for forwarding the next sub-upgrade package after receiving the successful receiving response aiming at the current sub-upgrade package.

In one embodiment, the receiving module 11 includes:

and the first acquisition sub-module is used for acquiring the equipment keywords in the upgrade package.

And the first determination submodule is used for determining the analysis result according to the equipment key word.

In one embodiment, the apparatus further comprises:

and the detection sub-module is used for detecting whether the upgrade package is completely received before analyzing the upgrade package.

And the second sending submodule is used for sending an upgrade packet resending instruction through the communication interface if the upgrade packet resending instruction is incomplete.

And the analysis sub-module is used for analyzing the upgrade package if complete.

In one embodiment, the receiving module 11 includes:

and the establishing sub-module is used for establishing connection with the cloud.

The first receiving sub-module is used for receiving the upgrading instruction sent by the cloud and determining whether the energy storage system needs to be upgraded or not.

And the second receiving sub-module is used for receiving the upgrade packet sent by the cloud end by the energy management system if the energy storage system is determined to need to be upgraded.

In one embodiment, the receiving module 11 includes:

and the second acquisition sub-module is used for acquiring the current version information of the energy storage system.

And the second determining submodule is used for determining that the energy storage system needs to be upgraded when the current version information and the version information to be upgraded are detected to be different.

In one embodiment, the receiving module 11 includes:

before the upgrade package is parsed by the energy management system, the method further comprises:

and the storage sub-module is used for storing the upgrade package into a processing area to be upgraded preset in the energy management system before analyzing the upgrade package.

In another embodiment of the present invention, an equipment upgrade system for an energy storage system includes a memory and a processor. The memory is used for storing a computer program, and the processor is used for realizing the equipment upgrading method of the energy storage system when executing the computer program.

The device upgrade system of the energy storage system includes a computing unit that may perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM) or a computer program loaded from a storage unit into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the device may also be stored.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like. In this application, the units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present invention. In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

Although the present application is disclosed above, the scope of protection of the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the present application, and such changes and modifications would fall within the scope of the invention.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. A method of upgrading a device of an energy storage system, the energy storage system comprising: an energy management system, and an inverter and battery management system connected to the energy management system, the method being applied to the energy management system, the method comprising:

if the analysis result is that other equipment is updated, the energy management system forwards the update package to the other equipment so as to update the other equipment, wherein the other equipment comprises: an inverter, and/or a battery management system;

wherein the energy management system forwards the upgrade package to the other device, comprising: the energy management system sends an indication message to the other equipment, wherein the indication message comprises the total byte number corresponding to the upgrade package and an ending symbol of the indication message; after receiving the response to the indication message, the energy management system divides the upgrade package into a plurality of sub upgrade packages; the energy management system forwards each sub-upgrade package in turn.

2. The device upgrade method of an energy storage system of claim 1 wherein the energy management system divides the upgrade package into a plurality of sub-upgrade packages, comprising:

3. The device upgrade method of the energy storage system of claim 1 wherein said forwarding each of said sub-upgrade packages in turn by said energy management system comprises:

the energy management system forwards the current sub-upgrade package;

4. The device upgrade method of the energy storage system of any one of claims 1-3, wherein the energy management system parses the upgrade package comprising:

5. The method of device upgrade of an energy storage system of any one of claims 1-3, wherein prior to the energy management system parsing the upgrade package, the method further comprises:

6. The device upgrade method of an energy storage system of claim 1 wherein the energy management system receives an upgrade package through a communication interface, comprising:

the energy management system establishes a connection with a cloud;

7. The method of device upgrade of an energy storage system of claim 6, wherein the energy management system determining whether an upgrade to the energy storage system is required comprises:

8. The device upgrade method of energy storage systems of claim 6 wherein prior to the energy management system parsing the upgrade package, the method further comprises:

9. An apparatus upgrade device for an energy storage system, wherein the energy storage system comprises: an energy management system, and an inverter and a battery management system connected to the energy management system, the apparatus being applied to the energy management system, the apparatus comprising:

the sending module is configured to forward the upgrade package to other devices to upgrade the other devices if the analysis result is that the other devices are upgraded, where the other devices include: an inverter, and/or a battery management system;

wherein, the sending module includes:

A first sending submodule, configured to send an indication packet to the other device, where the indication packet includes a total byte number corresponding to the upgrade packet and an ending symbol of the indication packet;

the first dividing sub-module is used for dividing the upgrade package into a plurality of sub-upgrade packages after receiving the response to the indication message;

10. A device upgrade system for an energy storage system, comprising a memory and a processor; the memory for storing a computer program, the processor for implementing a device upgrade method of an energy storage system according to any one of claims 1 to 8 when the computer program is executed.