Energy storage system, aggregation device, aggregation board, and information forwarding method

Abstract

The present invention provides an energy storage system and an aggregation device. The energy storage system comprises: an energy storage valve control device, an aggregation device provided with a plurality of aggregation boards, a plurality of extension devices, and a plurality of sub-modules; the energy storage valve control device is connected to the plurality of aggregation boards; a plurality of different extension devices are respectively connected to the plurality of aggregation boards; a plurality of different sub-modules are respectively connected to the plurality of extension devices; the extension devices are used for forwarding, to the aggregation boards, sub-module information sent by the sub-modules; the aggregation boards are used for forwarding the sub-module information to the energy storage valve control device; the energy storage valve control device is used for determining a control instruction on the basis of the sub-module information, and sending the control instruction to the aggregation boards; the aggregation boards are used for forwarding the control instruction to the corresponding extension devices; and the extension devices are used for forwarding the control instruction to the corresponding sub-modules.

Description

Energy storage system, energy storage aggregation device, aggregation board card and information forwarding method

[0001] Cross-reference to related applications

[0002] The present disclosure is based on and claims priority to Chinese Patent Application No. 202411245932.2, filed on September 5, 2024, entitled "Energy storage system, energy storage aggregation device, aggregation board card and information forwarding method", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of electric power, and more particularly to, but not limited to, an energy storage system, an energy storage aggregation device, an aggregation board card and an information forwarding method. BACKGROUND

[0004] In the current energy storage system, sub-modules are usually connected to an energy storage valve control device through an expansion device. Usually, one expansion device connects tens or hundreds of sub-modules, and is used to forward sub-module information to the energy storage valve control device and forward control instructions from the energy storage valve control device to the sub-modules. However, as the voltage level of the system increases, the number of sub-modules increases, for example, in the case of extra-high voltage, the number of sub-modules reaches thousands, thus challenging the interface capacity of the expansion device. The usual way is to use more expansion devices, and then modify the energy storage valve control device to enable it to connect to more expansion devices, but this increases the difficulty of hardware design. SUMMARY

[0005] The present disclosure provides an energy storage system, an energy storage aggregation device, an aggregation board card and an information forwarding method, wherein:

[0006] In a first aspect, the present disclosure provides an energy storage system, which comprises an energy storage valve control device, an energy storage aggregation device having a plurality of aggregation board cards, a plurality of expansion devices and a plurality of sub-modules; wherein the energy storage valve control device is connected to the plurality of aggregation board cards, the plurality of aggregation board cards are respectively connected to a plurality of different expansion devices, and the plurality of expansion devices are respectively connected to a plurality of different sub-modules.

[0007] The expansion device is used to forward the sub-module information sent by the sub-module to the aggregation board card, and the aggregation board card is used to forward the sub-module information to the energy storage valve control device.

[0008] The energy storage valve control device is used to determine a control instruction based on the sub-module information and send the control instruction to the aggregation board card, and the aggregation board card is used to forward the control instruction to the corresponding expansion device, and the expansion device is used to forward the control instruction to the corresponding sub-module.

[0009] It can be understood that, in the energy storage system framework provided by the embodiments of the present disclosure, the extension device is not directly connected with the energy storage valve control device, but is connected through the aggregation board card, and a plurality of different extension devices are respectively connected on the plurality of aggregation board cards; in this way, a plurality of extension devices in the energy storage system are divided into a plurality of groups, and each group of extension devices is connected with an aggregation board card, so that the number of aggregation board cards finally inserted / accessed to the energy storage valve control device is less than the number of extension devices; therefore, compared with the framework in which the extension device is directly inserted / accessed to the energy storage valve control device, the energy storage valve control device does not need to have a large number of hardware interfaces, thereby reducing the complexity and hardware design difficulty of the energy storage valve control device, solving the problems of large power consumption and slow heat dissipation of the energy storage valve control device, and thereby being beneficial to ensuring that the power consumption and heat dissipation of the energy storage valve control device meet the certification requirements; in addition, reducing the number of hardware interfaces of the energy storage valve control device can save the hardware cost of the energy storage valve control device.

[0010] In some embodiments, the aggregation device further includes a management board card; wherein:

[0011] The management board card is configured to obtain and parse a configuration file to obtain first configuration information of the aggregation board card, and send the first configuration information to the aggregation board card.

[0012] The aggregation board card is configured to, before forwarding the submodule information and the control instruction, configure a driving parameter of a first interface of the aggregation board card according to the first configuration information, so that the forwarding of the submodule information or the control instruction can be realized through the first interface.

[0013] It can be understood that, in the energy storage system provided by the embodiments of the present disclosure, the driving parameter of the first interface of the aggregation board card is configured according to the first configuration information in the configuration file, and compared with defining the driving parameter of the first interface of the aggregation board card in the software execution file (i.e., the software code / program used to realize the forwarding of the submodule information or the control instruction), the former is more flexible in changing the driving parameter of the first interface, and only needs to change the first configuration information in the configuration file to realize the flexible configuration of the driving parameter of the first interface of the aggregation board card, without the need for the back-end R&D personnel to develop the code / program in the software execution file or the aggregation board card again, so that the same first interface can be adapted to extension devices or energy storage valve control devices of different interface types, thereby being beneficial to improving the reusability of the first interface of the aggregation board card and reducing repeated development of the aggregation board card.

[0014] Further, in some embodiments, the first configuration information includes a communication protocol type and a data rate of the first interface of the aggregation board card.

[0015] It can be understood that, in the energy storage system provided by the embodiments of the present disclosure, the communication protocol type and the data rate of the first interface of the aggregation board card are configured according to the first configuration information of the configuration file; thus, in the case that the extension device of a certain first interface of the aggregation board card is replaced by an interface extension device of other communication protocol type or data rate, the extension device can be adapted by modifying the communication protocol type or the data rate of the corresponding first interface in the configuration file, without the need for the back-end R&D personnel to perform secondary development on the code / program in the software execution file or the aggregation board card to realize the adaptation of the extension device.

[0016] In some embodiments, the aggregation device further comprises a management board card; wherein,

[0017] The management board card is configured to obtain and parse the configuration file to obtain the second configuration information of the aggregation board card, and send the second configuration information to the aggregation board card; the second configuration information comprises the connection relationship of the first interface of the aggregation board card.

[0018] The aggregation board card is configured to forward the submodule information and the control instruction according to the second configuration information.

[0019] It can be understood that, in the energy storage system provided by the embodiments of the present disclosure, the connection relationship of the first interface of the aggregation board card (i.e., the topological relationship between the aggregation board card and the energy storage valve control device and the extension device) is defined in the configuration file, rather than in the software execution file (i.e., the software code / program mentioned above); thus, when the extension device or the energy storage valve control device needs to be replaced with a first interface, the second configuration information in the configuration file can be directly changed, without the need for the back-end R&D personnel to perform secondary development on the code / program in the software execution file or the aggregation board card to realize the change of the topological relationship, thereby enhancing the use flexibility of the first interface of the aggregation board card and reducing the repeated development of the aggregation board card.

[0020] Exemplarily, in some embodiments, the above-mentioned configuration file comprises information of the aggregation device, information of the aggregation board card, and information of the first interface of the aggregation board card; wherein,

[0021] The information of the aggregation device comprises the number of aggregation board cards;

[0022] The information of the aggregation board card comprises the board card identifier and the number of first interfaces;

[0023] The information of the first interface of the aggregation board card comprises the identifier of the first interface, whether the first interface is used, the connection object of the first interface, the communication protocol type of the first interface, and the data rate of the first interface; wherein, the connection object is the energy storage valve control device or the extension device.

[0024] It can be understood that in the energy storage system provided by the embodiments of the present disclosure, the key factors of the aggregation device, such as the communication protocol type of the first interface of the aggregation board card and the input-output relationship (i.e., the topological relationship), are defined in the configuration file; thus, in the case that these key factors need to be changed, the backend developer does not need to change the software code / program of the aggregation board card, and directly modifying the key factors in the configuration file can adapt to the change requirement.

[0025] In a second aspect, the embodiments of the present disclosure provide an aggregation device, which comprises a plurality of aggregation board cards, and each aggregation board card comprises at least three first interfaces; one of the at least three first interfaces is used for connecting an energy storage valve control device, and the remaining first interfaces are used for connecting extension devices; wherein,

[0026] The aggregation board card is configured to forward the sub-module information received by the extension device to the energy storage valve control device, and forward the control instruction issued by the energy storage valve control device to the corresponding extension device, so as to be forwarded to the corresponding sub-module by the extension device; wherein the control instruction is determined by the energy storage valve control device based on the sub-module information.

[0027] In a third aspect, the embodiments of the present disclosure provide an aggregation board card, which comprises at least three first interfaces; one of the at least three first interfaces is used for connecting an energy storage valve control device, and the remaining first interfaces are used for connecting extension devices.

[0028] The aggregation board card is configured to forward the sub-module information received by the extension device to the energy storage valve control device, and forward the control instruction issued by the energy storage valve control device to the corresponding extension device, so as to be forwarded to the corresponding sub-module by the extension device; wherein the control instruction is determined by the energy storage valve control device based on the sub-module information.

[0029] In a fourth aspect, the embodiments of the present disclosure provide an information forwarding method, which is applied to an aggregation board card, the aggregation board card comprises at least three first interfaces; one of the at least three first interfaces is used for connecting an energy storage valve control device, and the remaining first interfaces are used for connecting extension devices; the method comprises:

[0030] Forwarding the sub-module information received by the extension device to the energy storage valve control device; and

[0031] Forwarding the control instruction issued by the energy storage valve control device to the corresponding extension device, so as to be forwarded to the corresponding sub-module by the extension device; wherein the control instruction is determined by the energy storage valve control device based on the sub-module information.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure. It is to be understood that the drawings are designed solely for purposes of illustration and are not intended to limit the scope of the present disclosure in any way.

[0034] The flowcharts shown in the drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be further decomposed, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to actual conditions.

[0035] FIG. 1 is a structural schematic diagram of an energy storage system according to an embodiment of the present disclosure;

[0036] FIG. 2 is a structural schematic diagram of a convergence device 102 according to an embodiment of the present disclosure;

[0037] FIG. 3 is an example diagram of part of a configuration file according to an embodiment of the present disclosure;

[0038] FIG. 4A is a structural schematic diagram of a convergence board card 1021 according to an embodiment of the present disclosure;

[0039] FIG. 4B is a structural schematic diagram of a convergence board card 1021 according to an embodiment of the present disclosure;

[0040] FIG. 5 is a start-up flowchart of a convergence device 102 according to an embodiment of the present disclosure;

[0041] FIG. 6 is an implementation flowchart of an information forwarding method according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] To make the purposes, technical solutions and advantages of the embodiments of the present disclosure clearer, specific technical solutions of the present disclosure will be further described in detail below with reference to the drawings in the embodiments of the present disclosure. The following embodiments are used to illustrate the present disclosure but are not used to limit the scope of the present disclosure.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0044] In the following description, "some embodiments", "this embodiment", "embodiments of the present disclosure", and the like are described, which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0045] The "first, second, third" and the like appearing in the embodiments of the present disclosure are only for illustration and differentiation of the described objects, and do not have order, nor represent a special limitation on the number of devices in the embodiments of the present disclosure, and cannot constitute any limitation on the embodiments of the present disclosure.

[0046] The system framework described in the embodiments of the present disclosure is to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It can be known by those skilled in the art that, with the evolution of the system framework and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0047] In order to facilitate understanding of the technical solutions of the embodiments of the present disclosure, the related technologies or terms of the embodiments of the present disclosure are described below. The following related technologies or related terms can be arbitrarily combined with the technical solutions of the embodiments of the present disclosure as optional solutions, which all belong to the protection scope of the embodiments of the present disclosure.

[0048] (1) Energy storage system

[0049] The energy storage system is a system that stores energy in the form of electrical energy, thermal energy, or kinetic energy through different media and releases it when needed. Its working principle mainly includes: based on physical or chemical processes, converting electrical energy or other forms of energy into a storable form, and when needed, reducing it to electrical energy or other forms of energy through an energy conversion system. For example, in an electrochemical energy storage system, a battery stores electrical energy in the form of chemical energy through a chemical reaction, and when electrical energy is needed, the chemical energy is converted into electrical energy through a reverse reaction. This system realizes the transfer and optimization of energy through energy conversion and storage, and provides important energy support for power systems, transportation, industry, and households.

[0050] The system includes energy storage devices (such as batteries, battery packs, hydrogen storage tanks, etc.), energy conversion systems (such as inverters, rotor machines, etc.), expansion devices, and energy storage valve control devices, and other components. These components work together to achieve energy storage, conversion, and release.

[0051] According to the form and medium of stored energy, the energy storage system can be divided into multiple types, mainly including: mechanical energy storage, electrochemical energy storage, electromagnetic energy storage, thermal energy storage, and chemical energy storage.

[0052] Energy storage systems have a wide range of applications, such as in power systems, where they can be used to balance grid load, cope with peak and valley load differences, provide backup power, and regulate frequency, improving the stability and reliability of the grid.

[0053] (2) Energy storage valve control device

[0054] The energy storage valve control device is a key component in the power storage system that monitors and controls the energy storage equipment to ensure its safe and efficient operation. By precisely controlling the opening and closing of the energy storage valve, it regulates the inflow and outflow of the energy storage medium, meeting the energy needs of the grid or load.

[0055] The working principle of the energy storage valve control device is based on closed-loop control. By obtaining real-time state information of the energy storage equipment and comparing it with the preset control target, the control deviation is calculated. Then, according to the size and direction of the deviation, the corresponding control instructions are sent to the sub-modules to adjust the opening and closing degree of the energy storage valve, thus achieving precise control of the energy storage process.

[0056] The energy storage valve control device in the power storage system is widely used in various energy storage scenarios, including but not limited to:

[0057] Battery energy storage system: such as lithium-ion batteries, sodium-sulfur batteries, and other electrochemical energy storage systems, the energy storage valve control device is used to control the charging and discharging process of the battery, ensuring the safe and stable operation of the battery.

[0058] Pumped storage system: In pumped storage power stations, the energy storage valve control device is used to control the inflow and outflow of water, realizing the mutual conversion of electrical energy and potential energy.

[0059] Compressed air energy storage system: In compressed air energy storage systems, the energy storage valve control device is used to control the compression and release process of air, realizing the storage and release of electrical energy.

[0060] (3) Extension device

[0061] In current energy storage systems, sub-modules are connected to the energy storage valve control device through an extension device, which is a common design approach. The extension device can be understood as an intermediate device or interface equipment, playing the role of a bridge connecting sub-modules and the energy storage valve control device.

[0062] The extension device provides interfaces compatible with sub-modules and the energy storage valve control device, allowing smooth transmission of uplink sub-module information and downlink control instructions. This solves the problem of interface incompatibility between different devices, allowing sub-modules to be successfully connected to the energy storage system. The extension device communicates with sub-modules and the energy storage valve control device through specific interface communication protocols for data transmission. These protocols need to be defined in advance to ensure that all parties can correctly understand and process received data.

[0063] In addition to the basic interface adaptation function, the expansion device can also have some additional functions such as signal amplification, filtering, isolation, etc. to improve the stability and reliability of data transmission. These functions help to improve the overall performance of the energy storage system.

[0064] In the energy storage system, the expansion device can also exist as a redundant backup. When the energy storage valve control device or a certain sub-module fails, the expansion device can take over its work to ensure the continuous operation of the energy storage system. This design improves the reliability and stability of the system.

[0065] (4) GT high-speed communication interface

[0066] GT high-speed communication interface, full name Gigabit Transceiver, is a high-speed serial transceiver interface based on differential signals.

[0067] (5) AURORA communication interface

[0068] AURORA communication interface is a scalable, lightweight, serial link protocol-based communication interface for point-to-point communication.

[0069] The energy storage system provided by the embodiments of the present disclosure, as shown in FIG. 1, the energy storage system 100 comprises: an energy storage valve control device 101, a convergence device 102 with a plurality of convergence board cards 1021, a plurality of expansion devices 103 and a plurality of sub-modules 104; wherein the energy storage valve control device 101 is connected with the plurality of convergence board cards 1021, the plurality of convergence board cards 1021 are respectively connected with a plurality of different expansion devices 103, and the plurality of expansion devices 103 are respectively connected with a plurality of different sub-modules 104;

[0070] The expansion device 103 is used to forward the sub-module information sent by the sub-module 104 to the convergence board card 1021, and the convergence board card 1021 is used to forward the sub-module information to the energy storage valve control device 101.

[0071] The energy storage valve control device 101 is used to determine the control instruction based on the sub-module information and send the control instruction to the convergence board card 1021, and the convergence board card 1021 is used to forward the control instruction to the corresponding expansion device 103, and the expansion device 103 is used to forward the control instruction to the corresponding sub-module 104.

[0072] It can be understood that, in the energy storage system 100 provided by the embodiments of the present disclosure, as shown in FIG. 1, the extension device 103 is not directly connected with the energy storage valve control device 101, but is connected through the convergence board 1021, and a plurality of different extension devices 103 are respectively connected on the plurality of convergence boards 1021. In this way, the extension devices 103 in the energy storage system 100 are divided into a plurality of groups, and each group of extension devices 103 is connected with one convergence board 1021, so that the number of convergence boards 1021 finally inserted / accessed to the energy storage valve control device 101 is less than the number of extension devices 103. Therefore, compared with the framework in which the extension device 103 is directly inserted / accessed to the energy storage valve control device 101, the energy storage valve control device 101 does not need to have a large number of hardware interfaces, thereby reducing the complexity and hardware design difficulty of the energy storage valve control device 101, solving the problems of large power consumption and slow heat dissipation of the energy storage valve control device 101, and thereby benefiting to ensure that the power consumption and heat dissipation of the energy storage valve control device 101 meet the certification requirements. In addition, reducing the number of hardware interfaces of the energy storage valve control device 101 can save the hardware cost of the energy storage valve control device 101.

[0073] In some embodiments, the sub-module 104 includes a control unit for managing the charging and discharging of the energy storage device / module (such as a battery), controlling the temperature of the energy storage device / module (such as a battery), and the like.

[0074] In some embodiments, the sub-module information includes the voltage of the battery, the current of the battery, the temperature of the battery, and / or the state information of the battery. For example, in some embodiments, the state information of the battery includes the State of Charge (SOC), the State of Health (SOH), and / or the State of Power (SOP) of the battery; wherein the SOC represents the percentage of the remaining capacity of the battery; the SOH represents the degree of capacity or performance degradation of the battery relative to its new state; and the SOP represents the maximum power that the battery can provide under certain conditions.

[0075] It can be understood that the energy storage valve control device can determine a control instruction based on the sub-module information, and the control instruction is used to control the working state of the energy storage device / module (such as a battery). For example, the control instruction is used to indicate one or more energy storage modules allowed to be used, and / or one or more energy storage modules not allowed to be used (i.e., needing to be bypassed); for another example, the control instruction is used to instruct one or more energy storage modules to enter a charging state or a discharging state. The sub-module controls the working state of the corresponding energy storage module according to the received control instruction.

[0076] As shown in FIG. 1, a plurality of aggregation board cards 1021 are respectively connected with a plurality of different expansion devices 103, that is, the plurality of expansion devices 103 are divided into a plurality of groups by the aggregation board cards 1021, and one group of expansion devices 103 is connected to one aggregation board card 1021. In a possible implementation, as shown in FIG. 1, the aggregation board card 1021 includes at least three first interfaces 201; one of the at least three first interfaces 201 is used to connect the energy storage valve control device 101, and the remaining first interfaces of the at least three first interfaces 201 are used to connect the expansion device 103; wherein,

[0077] The aggregation board card 1021 is configured to forward the sub-module information received by the expansion device 103 to the energy storage valve control device 101, and forward the control instruction issued by the energy storage valve control device 101 to the corresponding expansion device 103, so as to forward the control instruction to the corresponding sub-module 104 through the expansion device 103; wherein the control instruction is determined by the energy storage valve control device 101 based on the sub-module information.

[0078] For one or more of the above embodiments, further, in some embodiments, as shown in FIG. 2, the aggregation device 102 further includes a management board card 1022;

[0079] The management board card 1022 is configured to obtain and parse a configuration file to obtain first configuration information and / or second configuration information of the aggregation board card 1021, and send the first configuration information and / or the second configuration information to the aggregation board card 1021; wherein the second configuration information includes a connection relationship of the first interface 201 of the aggregation board card 1021.

[0080] The aggregation board card 1021 is configured to configure a driving parameter of the first interface 201 of the aggregation board card 1021 according to the first configuration information before forwarding the sub-module information and the control instruction, so as to enable the forwarding of the sub-module information or the control instruction through the first interface 201.

[0081] The aggregation board card 1021 is configured to forward the sub-module information and the control instruction according to the second configuration information.

[0082] In the embodiments of the present disclosure, no limitation is made to the content defined in the configuration file, and the configuration file can include related information (i.e., the first configuration information) for configuring the driving parameter of the first interface 201 and / or related information (i.e., the second configuration information) for configuring the connection relationship of the first interface 201.

[0083] It can be understood that, compared with defining the driving parameters of the first interface 201 of the aggregation board card 1021 in the software execution file (i.e., the software code / program used to realize the forwarding of the sub-module information or control instructions), the former is more flexible in changing the driving parameters of the first interface 201, and only needs to change the first configuration information in the configuration file to realize the flexible configuration of the driving parameters of the first interface 201 of the aggregation board card 1021, without the need for the back-end R&D personnel to develop the code / program in the software execution file or the aggregation board card 1021 again, so that the same first interface 201 can be adapted to the expansion device 103 or the energy storage valve control device 101 of different interface types, thereby benefiting the improvement of the multiplexing and use flexibility of the first interface 201 of the aggregation board card 1021 and reducing the repeated development of the aggregation board card 1021.

[0084] For the scheme in which the related information for configuring the connection relationship of the first interface 201 is defined in the configuration file, the flexibility of the former is stronger than that of defining the connection relationship in the software execution file, which can reduce the repeated development of the aggregation board card 1021. This is because, when the expansion device 103 or the energy storage valve control device 101 needs to replace the inserted first interface 201, the second configuration information in the configuration file can be directly changed, without the need for the back-end R&D personnel to develop the code / program in the software execution file or the aggregation board card 1021 again to realize the change of the above connection relationship / topological relationship, thereby enhancing the use flexibility of the first interface 201 of the aggregation board card 1021 and reducing the repeated development of the aggregation board card 1021.

[0085] Exemplarily, in some embodiments, the first configuration information includes the communication protocol type and / or the data rate of the first interface 201 of the aggregation board card 1021.

[0086] It can be understood that the aggregation device 102 is used to aggregate and forward the data sent by the expansion device 103, assuming that the communication protocol type of the first interface 201 of the aggregation board card 1021 is burned in the software code of the board card 1021 when the aggregation device 102 is developed, which brings a problem that the interface of the expansion device 103 can only adapt to the first interface 201 of the communication protocol type defined in the software code in the board card 1021, for example, the first interface 201 of the aggregation board card 1021 is a GT interface, and the interface of the expansion device 103 can also be a GT interface. However, in actual use scenarios, the expansion device 103 can have various types, and different types of expansion devices 103 have different communication protocol types of interfaces, and the 103 that is inconsistent with the communication protocol type of the first interface 201 of the aggregation board card 1021 can not be used, even if it can be used, before use, the back-end R&D personnel needs to develop the software code in the aggregation board card 1021 again to change the communication protocol type of the first interface 201, so that the expansion device 103 can be normally used after being inserted into the first interface 201; it can be seen that this way is not flexible for different types of expansion devices 103, and the first interface 201 of the aggregation board card 1021 cannot conveniently and flexibly adapt to the expansion device 103 of different interface types.

[0087] Therefore, in the embodiments of the present disclosure, the related information for configuring the driving parameters of the first interface 201 of the aggregation board card 1021 is not defined in the software code, but is defined / configured through a configuration file, for example, the first configuration information is defined / configured through a configuration file; in this way, even if a new interface type of expansion device 103 needs to be inserted into the first interface 201 of the aggregation board card 1021 later, the back-end R&D personnel does not need to modify the software code in the aggregation board card 1021, and the front-end maintenance personnel can adapt the new interface type of expansion device 103 by modifying the communication protocol type of the first interface 201 in the configuration file; it can be seen that this way of configuring the driving parameters of the first interface 201 of the aggregation board card 1021 based on the configuration file can enhance the multiplexing and use flexibility of the first interface 201 of the aggregation board card 1021.

[0088] In a possible implementation, the configuration file can be stored on the management board card 1022, and the management board card 1022 manages the configuration file. In this way, when the information in the configuration file needs to be modified, the configuration file on the management board card 1022 can be modified, which is more convenient than storing the configuration file on each aggregation board card.

[0089] In a possible implementation, as shown in FIG. 2, the management board card 1022 and the plurality of aggregation board cards 1021 can be connected through the bus 301, and after the management board card 1022 obtains and parses the configuration file, the management board card 1022 sends the parsing result to the aggregation board cards 1021 through the bus 301.

[0090] In the embodiments of the present disclosure, the manner in which the management board card 1022 distributes the parsing result (i.e., the first configuration information and / or the second configuration information) is not limited. In some embodiments, the management board card 1022 can distribute the first configuration information and / or the second configuration information of different aggregation board cards 1021 to the corresponding aggregation board cards, for example, sending the first configuration information and / or the second configuration information of a first aggregation board card to the first aggregation board card, and sending the first configuration information and / or the second configuration information of a second aggregation board card to the second aggregation board card; in other embodiments, the management board card 1022 can also transmit the first configuration information and / or the second configuration information of all aggregation board cards together through the bus, and the aggregation board cards 1021 can obtain their own configuration information according to the board card identifiers of the corresponding aggregation board cards.

[0091] In the embodiments of the present disclosure, the content included in the configuration file is not limited. In summary, the configuration file at least includes the related information (i.e., the first configuration information) for configuring the driving parameters of the first interface 201 and / or the related information (i.e., the second configuration information) for configuring the connection relationship of the first interface 201.

[0092] For example, in some embodiments, the configuration file includes the information of the aggregation device 102, the information of the aggregation board card 1021, and the information of the first interface of the aggregation board card 1021; wherein,

[0093] The information of the aggregation device 102 includes the number of aggregation board cards 1021;

[0094] The information of the aggregation board card 1021 includes the board card identifier and the number of first interfaces;

[0095] The information of the first interface of the aggregation board card 1021 includes the identifier of the first interface 201, whether the first interface 201 is used, the connection object of the first interface 201, the communication protocol type of the first interface 201, and the data rate of the first interface 201; wherein, the connection object is the energy storage valve control device 101 or the expansion device 103.

[0096] FIG. 3 is a partial content example diagram of the configuration file provided by the embodiments of the present disclosure, as shown in FIG. 3, wherein:

[0097] a) DEVICE_CFG describes the information of the aggregation device 102:

[0098] • board_count: the number of aggregation boards 1021;

[0099] b) BOARD CFG describes the information of the aggregation board 1021:

[0100] • id: board number (i.e., board identification);

[0101] • interface_count: the number of first interfaces on the aggregation board 1021;

[0102] c) INF CFG describes the information of the first interface 201:

[0103] • id: interface number (i.e., identification of the first interface 201);

[0104] • used: whether to use;

[0105] • link: connection object, "MAIN" means that the connection object of the first interface is the energy storage valve control device 101, and "EXPAND" means that the connection object of the first interface is the expansion device 103;

[0106] • type: communication protocol type of the first interface 201, "GT" means GT communication, "NET" means gigabit Ethernet, and "AURORA" means AURORA communication;

[0107] • speed: indicates the data rate of the first interface 201, and the unit is Mbps, "1000" means gigabit, and "5000" means 5G;

[0108] The following examples describe possible implementation schemes of the aggregation device 102 of one or more embodiments described above.

[0109] The embodiments of the present disclosure provide a software-defined aggregation device 102, which can change the communication protocol of the first interface 201 and the aggregation relationship between devices by modifying the software. The actual project can be adapted by flexibly modifying the configuration file, reducing hardware repeated development, and shortening the development cycle.

[0110] It can be understood that for thousands of sub-modules accessing the energy storage valve control system / device, the following problems may exist:

[0111] 1) Develop an expansion device supporting thousands of interfaces to meet the access needs of a large number of sub-modules. Since the number of interfaces of such a device is too large, the resources required for backplane communication are many, which increases the performance requirements of the processor. At the same time, since the expansion device usually uses a multi-board design, the number of boards required by the expansion device supporting thousands of interfaces is huge, which brings great challenges to the power consumption and heat dissipation of the expansion device.

[0112] 2) Using a plurality of expansion devices to meet the access requirements of a large number of sub-modules increases the number of expansion access interfaces of the energy storage valve control device. In actual projects, the energy storage valve control system has redundancy requirements, and the number of required expansion devices is multiplied, so the number of expansion devices accessed in the energy storage valve control system is large, and there are challenges in hardware design, chip performance, power consumption, and heat dissipation.

[0113] Based on this, the embodiment of the disclosure provides a software-defined convergence device 102, which can change the communication protocol of the interface and the convergence relationship between devices by modifying the software. The problem of large-scale sub-module access to the system in the energy storage valve control system is effectively solved.

[0114] In the embodiment of the disclosure:

[0115] 1) A software-defined convergence device 102 design is provided, including the hardware design inside the device;

[0116] 2) A software-defined interface is provided, which can flexibly change the communication interface 201 of the convergence device through software loading;

[0117] 3) A software configuration method is provided, which can dynamically establish the topology relationship of convergence distribution according to the modification of the configuration file;

[0118] 4) An initialization configuration process of the software-defined energy storage data convergence device 102 is provided;

[0119] 5) A configuration file key factor of the software-defined energy storage data convergence device 102 is provided.

[0120] The convergence device 102 provided by the embodiment of the disclosure can solve the hardware problems such as complexity, large power consumption, and heat dissipation of the expansion device or energy storage valve control device caused by the access of a large number of sub-modules to the energy storage valve control system; the driving function of the first interface 201 is determined through software loading, which improves the reusability of the equipment and reduces the research and development cycle; that is, by changing the communication protocol type supported by the first interface 201 of the convergence board 1021 in the configuration file, the expansion device of the corresponding protocol type interface can be flexibly adapted; the topology relationship of data access to the energy storage valve control system is planned through configuration, which increases flexibility and reduces repeated development.

[0121] The possible implementation scheme of the convergence device 102 provided by the embodiment of the disclosure is described as follows.

[0122] The embodiment of the present disclosure provides a convergence device 102 for an energy storage valve control system, which is used for converging data of an expansion device 103 and then connecting the converged data to an energy storage valve control device 101, and the convergence device 102 adopts a unified framework design, and the driving protocol of a convergence port / first interface 201 and the input / output relationship are defined by software and configuration files.

[0123] As shown in FIG. 1, the convergence device 102 is located between the expansion device 103 and the energy storage valve control device 101 in the energy storage valve control system.

[0124] For uplink, the convergence device 102 can converge data (submodule information) of multiple expansion devices 103 and then send the converged data to the energy storage valve control device 101; for downlink, the convergence device 102 can distribute submodule control instructions sent by the energy storage valve control device 101 to each expansion device 103.

[0125] In some embodiments, as shown in FIG. 2, the convergence device 102 internally includes one management board card 1022 and N convergence board cards 1021, and the board cards are connected through a bus 301. The bus 301 is used for transmitting software execution files and sending configuration files, and the type of the bus is not limited; wherein N is greater than or equal to 2; the software execution file refers to software code used for realizing the functions of converging and forwarding submodule information and distributing control instructions.

[0126] In some embodiments, the management board card 1022 is used for managing the convergence device 102, loading software of the convergence board card 1021, and configuring parameters, but does not specifically perform the convergence function of data;

[0127] In some embodiments, the convergence board card 1021 independently completes work, and the convergence board cards 1021 do not interact with each other. Each convergence board card 1021 completes the actual convergence function, and the driving function of the first interface 201 is defined by software, such as GT, Aurora, gigabit Ethernet, etc.

[0128] In some embodiments, as shown in FIG. 4A, the convergence board card 1021 includes a first processor 401, a second processor 402, a second interface 404 and at least three first interfaces 201; wherein,

[0129] The second interface 404 is connected with the management board card 1022, the first processor 401 is connected with the second interface 404 and the second processor 402 respectively, and the second processor 402 is connected with the at least three first interfaces 201; one of the at least three first interfaces 201 is connected with the energy storage valve control device 101, and the remaining first interfaces of the at least three first interfaces 201 are connected with the expansion device 103;

[0130] The first processor 401 is configured to send the first configuration information and / or the second configuration information to the second processor 402, and load the first program and the second program for the second processor 402.

[0131] The second processor 402 is configured to configure a drive parameter of the corresponding first interface 201 according to the first configuration information by executing the first program, and send sub-module information or a control instruction to the corresponding first interface 201 according to the second configuration information by executing the second program, so as to forward the sub-module information to the energy storage valve control device 101 through the first interface 201, or distribute the control instruction to the extension device 103, and then distribute the control instruction to the sub-module 104 through the extension device 103, so as to control the working state of the connected energy storage device / module (for example, a battery) based on the control instruction.

[0132] For example, in some embodiments, as shown in FIG. 4B, the aggregation board card 1021 internally includes a management processor 401 (which is an example of the first processor 401) and a main processor 402 (which is an example of the second processor 402), and the management processor 401 is configured to load programs and send configuration information to the main processor 402.

[0133] The main processor 402 initializes the first interface 201 according to the loaded software, and completes the entire aggregation and distribution functions according to the configuration parameters and input / output information.

[0134] As shown in FIG. 4B, the aggregation board card 1021 is provided with a plurality of optical interfaces 403 (typically 12 channels), and the optical interface 403 itself only provides a physical channel, and the communication protocol is determined through software loading, which can be GT, Aurora, Gigabit Ethernet, etc. The optical interface 403 is an example of the first interface 201.

[0135] The optical interface 403 is configured to define, through a configuration file, which optical interfaces are connected to the extension device 103 and which optical interfaces are connected to the energy storage valve control device 101.

[0136] As shown in FIG. 4B, the aggregation board card 1021 further includes a management interface 404 (which is the second interface 404), which is distributed on the management processor 401, and the management interface 404 is configured to access the management bus 301 of the aggregation device 102 to receive data and reply to the answer sent by the management board card 1022.

[0137] The embodiment of the present disclosure provides a starting process of the aggregation device 102, so that the aggregation device 102 can be defined according to the software-defined interface drive and connection relationship. FIG. 5 is a starting process diagram of the aggregation device 102 provided by the embodiment of the present disclosure, as shown in FIG. 5, the starting process includes the following steps 501 to 508:

[0138] Step 501, the management board card 1022 acquires the local configuration file;

[0139] Step 502, the management board card 1022 determines whether the configuration file parsing is correct; if yes, step 504 is executed; otherwise, step 503 is executed.

[0140] Step 503, the management board card 1022 prompts an exception.

[0141] Step 504, the management board card 1022 acquires software from the local; if the acquisition is successful, step 505 is executed; otherwise, step 503 is executed.

[0142] Step 505, the management board card 1022 loads software to the aggregation board card 1021 successively.

[0143] Step 506, the aggregation board card 1021 determines whether the configuration parameters are legal by loading the software; if yes, step 507 is executed; otherwise, step 508 is executed; wherein the configuration parameters are obtained by the management board card 1022 parsing the configuration file.

[0144] Step 507, the aggregation board card 1021 configures the drive parameters of the first interface 201 of the aggregation board card 1021 successively by loading the software; wherein the drive parameters of the first interface 201 are configured based on the configuration parameters.

[0145] Step 508, the aggregation board card 1021 determines the topology relationship of the aggregation and forwarding of each first interface 201 according to the configuration parameters.

[0146] Embodiments of the present disclosure provide an information forwarding method, and FIG. 6 is an implementation flowchart of the information forwarding method provided by the embodiments of the present disclosure, as shown in FIG. 6, the method comprises steps 601 and 602 as follows:

[0147] Step 601, the aggregation board card 1021 forwards the sub-module information received by the extension device 103 to the energy storage valve control device 101.

[0148] Step 602, the aggregation board card 1021 forwards the control instruction issued by the energy storage valve control device 101 to the corresponding extension device 103, so as to be forwarded to the corresponding sub-module 104 by the extension device 103; wherein the control instruction is determined by the energy storage valve control device 101 based on the sub-module information.

[0149] In some embodiments, the above method further comprises: before forwarding the sub-module information and the control instruction, configuring the drive parameters of the first interface of the aggregation board card according to the first configuration information defined by the configuration file, so as to realize the forwarding of the sub-module information or the control instruction through the first interface.

[0150] In some embodiments, the first configuration information includes a communication protocol type and / or a data rate of the first interface of the aggregation board card.

[0151] In some embodiments, the aggregation board card 1021 forwards the submodule information and the control instruction according to the second configuration information defined by the configuration file.

[0152] In some embodiments, the configuration file includes information of the aggregation device 102, information of the aggregation board card 1021, and information of the first interface 201 of the aggregation board card 1021; wherein,

[0153] The information of the aggregation device 102 includes a number of the aggregation board cards 1021;

[0154] The information of the aggregation board card 1021 includes a board card identifier and a number of the first interfaces 201;

[0155] The information of the first interface 201 of the aggregation board card 1021 includes an identifier of the first interface 201, whether the first interface 201 is used, a connection object of the first interface 201, a communication protocol type of the first interface 201, and a data rate of the first interface 201; wherein, the connection object is the energy storage valve control device 101 or the expansion device 103.

[0156] The above method embodiments are similar to the descriptions of the above energy storage system, aggregation device, and aggregation board card embodiments, and have similar beneficial effects as the energy storage system, aggregation device, and aggregation board card embodiments. For technical details not disclosed in the method embodiments of the present disclosure, please refer to the descriptions of the energy storage system, aggregation device, and aggregation board card embodiments.

[0157] It should be noted that although the steps of the method in the present disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. In addition or alternatively, some steps can be omitted, multiple steps can be combined into one step, one step can be divided into multiple steps, etc.; or, steps in different embodiments can be combined into a new technical solution.

[0158] It should be understood that every feature, structure, or characteristic described herein is within a single embodiment and is included in at least one embodiment of the disclosure. Therefore, repeated description of the same feature, structure, or characteristic in the various embodiments is omitted. In addition, when the terms "one embodiment" or "an embodiment" are used, this is by no means limiting the described features, structures, or characteristics to this one or more embodiments. In other words, the features, structures, or characteristics are not limited to a single embodiment unless specifically stated as such. It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure, as claimed.

[0159] The term "and / or", merely describes association between associated objects, which means that there can be three kinds of relations, for example, object A and / or object B, which can represent: object A exists alone, object A and object B exist together, object B exists alone.

[0160] It should be noted that the terms "comprising", "including", or any other variant thereof, are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or devices that comprise a list of elements not only include those elements, but also include other elements not expressly listed or inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the sentence "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element.

[0161] In several embodiments provided by the disclosure, it should be understood that the disclosed system, device, equipment and method can be implemented in other ways. The above described embodiments are only illustrative.

[0162] The disclosed methods in several method embodiments provided by the disclosure can be combined arbitrarily without conflict, to obtain new method embodiments.

[0163] The disclosed features in several product embodiments provided by the disclosure can be combined arbitrarily without conflict, to obtain new product embodiments.

[0164] The disclosed features in several method or device embodiments provided by the disclosure can be combined arbitrarily without conflict, to obtain new method or device embodiments.

[0165] The above merely describes the embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An energy storage system, the energy storage system comprising: The energy storage valve control device, the convergence device with a plurality of convergence board cards, a plurality of expansion devices and a plurality of sub-modules; wherein the energy storage valve control device is connected with the plurality of convergence board cards, the plurality of convergence board cards are respectively connected with a plurality of different expansion devices, and the plurality of expansion devices are respectively connected with a plurality of different sub-modules; The expansion device is used for forwarding the sub-module information sent by the sub-module to the convergence board card, and the convergence board card is used for forwarding the sub-module information to the energy storage valve control device; The energy storage valve control device is used for determining a control instruction based on the sub-module information and sending the control instruction to the convergence board card, the convergence board card is used for forwarding the control instruction to the corresponding expansion device, and the expansion device is used for forwarding the control instruction to the corresponding sub-module.

2. The energy storage system of claim 1, wherein, The convergence device further comprises a management board card; The management board card is used for obtaining and analyzing a configuration file to obtain first configuration information of the convergence board card and sending the first configuration information to the convergence board card; The convergence board card is used for configuring a driving parameter of a first interface of the convergence board card according to the first configuration information before forwarding the sub-module information and the control instruction, so that the forwarding of the sub-module information or the control instruction can be realized through the first interface.

3. The energy storage system of claim 2, wherein, The first configuration information comprises a communication protocol type and a data rate of the first interface of the convergence board card.

4. The energy storage system of claim 1, wherein, The convergence device further comprises a management board card; The management board card is used for obtaining and analyzing a configuration file to obtain second configuration information of the convergence board card and sending the second configuration information to the convergence board card; the second configuration information comprises a connection relationship of the first interface of the convergence board card; The convergence board card is used for forwarding the sub-module information and the control instruction according to the second configuration information.

5. The energy storage system of any one of claims 2-4, wherein, The management board card and the plurality of convergence board cards are connected through a bus; The management board card is used for sending the analysis result to the convergence board card through the bus after obtaining and analyzing the configuration file; The convergence board card is used for taking out the analysis result belonging to itself according to the board card identifier of the corresponding convergence board card of the analysis result.

6. The energy storage system of any one of claims 2-4, wherein, The convergence board card comprises a first processor, a second processor, a second interface and at least three first interfaces; wherein, The second interface is connected with the management board card, the first processor is respectively connected with the second interface and the second processor, and the second processor is connected with the at least three first interfaces; one of the at least three first interfaces is connected with the energy storage valve control device, and the remaining first interfaces of the at least three first interfaces are connected with the expansion device; The first processor is used for sending the first configuration information and / or the second configuration information to the second processor and loading the first program and the second program for the second processor. The second processor is configured to execute the first program to configure a driving parameter of the corresponding first interface according to the first configuration information, and execute the second program to send the sub-module information or the control instruction to the corresponding first interface according to the second configuration information.

7. The energy storage system of any one of claims 2-4, wherein, The configuration file comprises information of the aggregation device, information of the aggregation board card, and information of the first interface of the aggregation board card; wherein, The information of the aggregation device comprises a number of aggregation board cards; The information of the aggregation board card comprises a board card identifier and a number of the first interfaces; The information of the first interface of the aggregation board card comprises an identifier of the first interface, whether the first interface is used, a connection object of the first interface, a communication protocol type of the first interface, and a data rate of the first interface; wherein, the connection object is the energy storage valve control device or the expansion device.

8. The energy storage system of any one of claims 2-4, wherein, The configuration file is stored on the management board card.

9. The energy storage system of any one of claims 2-4, wherein, The sub-module information comprises at least one of a voltage of a battery, a current of the battery, a temperature of the battery, and state information of the battery. 10.An aggregation device comprising a plurality of aggregation board cards, the aggregation board cards comprising at least three first interfaces; one of the at least three first interfaces is configured to connect an energy storage valve control device, and the remaining first interfaces are configured to connect expansion devices; wherein, The aggregation board card is configured to forward sub-module information received by the expansion device to the energy storage valve control device, and forward a control instruction issued by the energy storage valve control device to a corresponding expansion device, so as to be forwarded to a corresponding sub-module by the expansion device; wherein, the control instruction is determined by the energy storage valve control device based on the sub-module information. The aggregation device further comprises a management board card; 11. The convergence device of claim 10, wherein, The management board card is configured to acquire and parse a configuration file to obtain first configuration information of the aggregation board card, and send the first configuration information to the aggregation board card; The aggregation board card is configured to configure driving parameters of the first interface of the aggregation board card according to the first configuration information before forwarding the sub-module information and the control instruction, so that the sub-module information or the control instruction can be forwarded through the first interface. The first configuration information comprises a communication protocol type and a data rate of the first interface of the aggregation board card.

12. The convergence device of claim 11, wherein, The aggregation device further comprises a management board card; 13. The convergence device of claim 10, wherein, The management board card is configured to acquire and parse a configuration file to obtain second configuration information of the aggregation board card, and send the second configuration information to the aggregation board card; the second configuration information comprises a connection relationship of the first interface of the aggregation board card; The aggregation board card is configured to forward the sub-module information and the control instruction according to the second configuration information. The management board card and the plurality of aggregation board cards are connected through a bus; 14. The converging device according to any one of claims 11 to 13, wherein, The management board card is configured to send a parsing result to the aggregation board card through the bus after acquiring and parsing the configuration file; The aggregation board card is configured to take out its own parsing result according to a board card identifier of the corresponding aggregation board card in the parsing result. ​ 15. The converging device according to any one of claims 11 to 13, wherein, The aggregation board card comprises a first processor, a second processor, a second interface and at least three first interfaces; wherein, The second interface is connected with the management board card, the first processor is connected with the second interface and the second processor respectively, and the second processor is connected with the at least three first interfaces; one of the at least three first interfaces is connected with the energy storage valve control device, and the remaining first interfaces of the at least three first interfaces are connected with the expansion device; The first processor is configured to send first configuration information and / or second configuration information to the second processor, and load first program and second program for the second processor; The second processor is configured to configure driving parameters of a corresponding first interface according to the first configuration information by executing the first program, and send the sub-module information or the control instruction to the corresponding first interface according to the second configuration information by executing the second program.

16. The converging device according to any one of claims 11 to 13, wherein, The configuration file comprises information of the aggregation device, information of the aggregation board card and information of the first interface of the aggregation board card; wherein, The information of the aggregation device comprises the number of aggregation board cards; The information of the aggregation board card comprises board card identification and the number of the first interfaces; The information of the first interface of the aggregation board card comprises identification of the first interface, whether the first interface is used, a connection object of the first interface, a communication protocol type of the first interface and a data rate of the first interface; wherein, the connection object is the energy storage valve control device or the expansion device.

17. The converging device according to any one of claims 11 to 13, wherein, The configuration file is stored on the management board card.

18. The converging device of any one of claims 11 to 13, wherein, The sub-module information comprises at least one of the following: voltage of a battery, current of a battery, temperature of a battery, state information of a battery.

19. An aggregation board card, comprising at least three first interfaces; one of the at least three first interfaces is configured to connect an energy storage valve control device, and the remaining first interfaces of the at least three first interfaces are configured to connect an expansion device; The aggregation board card is configured to forward sub-module information received by the expansion device to the energy storage valve control device; and forward a control instruction issued by the energy storage valve control device to a corresponding expansion device, so as to be forwarded to a corresponding sub-module by the expansion device; wherein, the control instruction is determined by the energy storage valve control device based on the sub-module information.

20. An information forwarding method, applied to an aggregation board card, the aggregation board card comprising at least three first interfaces; one of the at least three first interfaces is configured to connect an energy storage valve control device, and the remaining first interfaces of the at least three first interfaces are configured to connect an expansion device; the method comprises: forwarding sub-module information received by the expansion device to the energy storage valve control device; and forwarding a control instruction issued by the energy storage valve control device to a corresponding expansion device, so as to be forwarded to a corresponding sub-module by the expansion device; wherein, the control instruction is determined by the energy storage valve control device based on the sub-module information.

Images