Design method of hierarchical technical framework for health management of energy storage system

Abstract

The present invention belongs to the field of electric energy storage system management, and specifically relates to a method for designing a hierarchical technical framework for energy storage system health management, including classifying and dividing the core technical modules in the process of energy storage system health management, and establishing a core technology layer based on the classification and division results; establishing a product platform layer based on the results of the operation stage division of the energy storage system; and establishing different product lines based on each of the product platform designs, and establishing a product line layer. In this way, by dividing the different stages of the energy storage system health management process, different product platforms are constructed, and based on different product platforms, the layers are expanded and extended upward and downward respectively, and finally a clear hierarchical technical structure is obtained. It is achieved that the layers are expanded and extended upward and downward respectively based on different products, the overall hierarchical technical framework structure is clear, the core technology layer modules are highly cohesive and low coupled, and are implemented in different stages of the energy storage system, so as to carry out comprehensive health management.

Description

Technical Field

[0001] The present invention belongs to the field of electric energy storage system management, and specifically relates to a method for designing a hierarchical technical framework for health management of an energy storage system. Background Art

[0002] The development and maturity of the energy storage industry is of great significance to accelerating the construction of a power system based on new energy.

[0003] The core component of the energy storage system is the lithium-ion battery. It is crucial to ensure that the lithium-ion battery works safely and stably in various complex scenarios. At present, the application of energy storage systems is growing day by day, including electric vehicles, industrial energy storage and household energy storage. Various safety accidents caused by battery problems are also emerging in an endless stream, but there is no method for health management of energy storage systems in the current existing technology. Summary of the invention

[0004] In view of this, the present invention provides a method for designing a hierarchical technical framework for health management of an energy storage system, which implements health management at different stages of the energy storage system to solve the problem in the prior art that it is impossible to perform comprehensive health management of the energy storage system.

[0005] The above-mentioned object of the present application is achieved through the following technical solutions:

[0006] The present application embodiment provides a method for designing a hierarchical technical framework for health management of an energy storage system, including:

[0007] Classify the core technology modules in the energy storage system health management process, and establish the core technology layer based on the classification results;

[0008] Based on the results of the operation phase division of the energy storage system, a product platform layer is established; wherein the product platform layer includes: a design platform, an operation and maintenance platform, and a reuse platform;

[0009] Different product lines are designed and established based on each of the product platforms, and a product line layer is established; wherein the product lines are used to design and produce energy storage products.

[0010] Furthermore, it also includes:

[0011] Establish a custom project layer to customize products based on customer change requirements.

[0012] Furthermore, the core technology layer includes: a general technology module, a state assessment module, a fault diagnosis module, a fault warning module, a life prediction module and a control decision module;

[0013] The general technology module, battery model submodule, battery database submodule and model parameter identification submodule;

[0014] The state estimation module includes a state of charge estimation submodule, a health state estimation submodule, a power state estimation submodule and a SOX estimation submodule;

[0015] The SOX estimation submodule includes a temperature state estimation submodule, an energy state estimation submodule and a safety state estimation submodule;

[0016] The fault diagnosis module includes an internal short circuit fault diagnosis submodule, an external short circuit fault diagnosis submodule, an overcharge / over discharge fault diagnosis submodule, an inconsistency fault diagnosis submodule and a thermal runaway fault diagnosis submodule;

[0017] The fault warning module includes a thermal abuse thermal runaway warning submodule, a mechanical abuse thermal runaway warning submodule, and an electrical abuse thermal runaway warning submodule;

[0018] The life prediction module includes an early life prediction submodule, a mid-term life prediction submodule and a terminal life prediction submodule;

[0019] The control decision module includes a charging strategy submodule, a balancing strategy submodule, a thermal management strategy submodule and a maintenance strategy submodule.

[0020] Furthermore, the product design platform is used for energy storage system product design; the supporting technology components of the product design platform include the general technology module, the state estimation module, the life prediction module and the control decision module;

[0021] The product operation and maintenance platform is used for operation and maintenance of energy storage system products; the supporting technology components of the product operation and maintenance platform include all modules in the core technology layer;

[0022] The product reuse platform is used for reusing products for energy storage systems; the supporting technology components of the product reuse platform include the general technology module, the state estimation module and the life prediction module.

[0023] Furthermore, the customer change request is a change request for functions and / or features, or a change request for functions and / or performance requirements under features; wherein the change includes addition, change and deletion.

[0024] The present invention adopts the above technical solution, and the beneficial effects that can be achieved include:

[0025] The present application provides a method for designing a hierarchical technical framework for the health management of an energy storage system, including classifying and dividing the core technical modules in the process of health management of the energy storage system, and establishing a core technology layer based on the classification results; establishing a product platform layer based on the results of the operation stage division of the energy storage system; wherein the product platform layer includes: a design platform, an operation and maintenance platform, and a reuse platform; establishing different product lines based on the design of each product platform, and establishing a product line layer; wherein the product line is used to design and produce energy storage products. In this way, by dividing the different stages of the health management process of the energy storage system, different product platforms are constructed, and based on different product platforms, the layers are expanded and extended upward and downward respectively, and finally a clear hierarchical technical structure is obtained. It is achieved that the layers are expanded and extended upward and downward respectively based on different products, the overall hierarchical technical framework structure is clear, the core technology layer modules are highly cohesive and low-coupled, and are implemented in different stages of the energy storage system for comprehensive health management.

[0026] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of a design method for a hierarchical technical framework for health management of an energy storage system provided in an embodiment of the present application;

[0029] Figure 2 A diagram of a hierarchical technical framework for energy storage system health management provided in an embodiment of the present application;

[0030] Figure 3 Detailed diagram of the core technology layers of the energy storage system health management layered technology provided in the embodiment of the present application. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] The following describes a method for designing a hierarchical technical framework for health management of an energy storage system provided in an embodiment of the present application in conjunction with the accompanying drawings.

[0033] Example

[0034] Figure 1 A schematic diagram of a design method for a hierarchical technical framework for health management of an energy storage system provided in an embodiment of the present application; Figure 2 This is a diagram of the energy storage system health management hierarchical technology framework provided in the embodiment of the present application. Figure 1 and Figure 2 As shown, the energy storage system health management hierarchical technical framework design method provided in the embodiment of the present application includes at least the following steps:

[0035] S101. Classify and divide the core technology modules in the process of energy storage system health management, and establish a core technology layer based on the classification results.

[0036] Specifically, based on the classification and division of specific core technology modules used in the process of energy storage system health management, the specific core technologies are classified and organized to establish a core technology layer.

[0037] S102. Based on the results of the operation stage division of the energy storage system, a product platform layer is established.

[0038] Specifically, by dividing the energy storage system into different operation stages, a product platform layer consisting of three major product platforms is established, including the design platform, operation and maintenance platform, and reuse platform.

[0039] S103. Design and establish different product lines based on each of the product platforms, and establish a product line layer.

[0040] Specifically, different product lines can be designed and established based on each of the product platforms, and different specific energy storage products can be designed and produced based on each of the product lines, thereby establishing a product line layer.

[0041] Furthermore, in some specific implementation processes, the energy storage system health management hierarchical technical framework design method provided in the embodiment of the present application may also include: establishing a customized project layer for customizing products based on customer change requirements. Specifically, based on the specific product, a function and feature can be modified (added, changed, deleted) for individual customers, or the function and performance requirements under the feature can be modified (added, changed, deleted) to complete the customized product.

[0042] The embodiment of the present application provides a method for designing a hierarchical technical framework for health management of an energy storage system, including constructing a hierarchical technical framework for health management of an energy storage system based on a hierarchical technical framework for integrated product development; classifying and dividing the specific core technology modules used in the health management process of the energy storage system, classifying and organizing the specific core technologies, and establishing a core technology layer; establishing a product platform layer including three major product platforms by dividing the different operation stages of the energy storage system; establishing different product lines according to the design of each product platform, and designing and producing different specific energy storage products according to each product line, thereby establishing a product line layer; in particular, on the basis of specific products, a certain function and feature can be changed (added, changed, deleted) for individual customers, or the function and performance requirements under the feature can be changed (added, changed, deleted) to complete the customized product. In this way, by dividing the different stages of the health management process of the energy storage system, different product platforms are constructed, and based on different product platforms, the layers are extended upward and downward respectively, and finally a clear hierarchical technical structure is obtained. It is realized that the layers are extended upward and downward respectively based on different products, and the overall hierarchical technical framework structure is clear, and the core technology layer modules are highly cohesive and low-coupled. The core technology layer supports the product platform layer, which reduces the development difficulty and speeds up the development. The product platform layer supports the product line layer, which improves the product's later scalability and maintainability.

[0043] Figure 3 The core technology layer details of the energy storage system health management layered technology provided in the embodiment of the present application are as follows: Figure 3 As shown, in the energy storage system health management hierarchical technical framework design method provided in the embodiment of the present application;

[0044] The core technology layer includes general technology module, status assessment module, fault diagnosis module, fault warning module, life prediction module and control decision module.

[0045] General technology module: This module is the common technology used by the three major product platforms. The general technology module includes a battery model sub-module, a battery database sub-module, a model parameter identification sub-module, etc.

[0046] The state estimation module includes a state of charge (SOC) estimation submodule, a state of health (SOH) estimation submodule, a state of power (SOP) estimation submodule and a SOX estimation submodule. The SOX estimation includes but is not limited to a state of temperature (SOT) estimation submodule, a state of energy (SOE) estimation submodule, a state of safe (SOS) estimation submodule and other technical submodules.

[0047] Fault diagnosis module, including internal short circuit fault diagnosis submodule, external short circuit fault diagnosis submodule, overcharge / over discharge fault diagnosis submodule, inconsistency fault diagnosis submodule and thermal runaway fault diagnosis submodule;

[0048] The fault warning module includes technical sub-modules such as thermal abuse thermal runaway warning sub-module, mechanical abuse thermal runaway warning sub-module and electrical abuse thermal runaway warning sub-module.

[0049] The life prediction module includes technical sub-modules such as the early life prediction sub-module, the mid-term life prediction sub-module, and the terminal life prediction sub-module.

[0050] The control decision module includes technical sub-modules such as charging strategy sub-module, balancing strategy sub-module, thermal management strategy sub-module and maintenance strategy sub-module.

[0051] Furthermore, the above-mentioned product platform layer includes a design platform, an operation and maintenance platform, and a reuse platform.

[0052] Specifically, the product design platform is aimed at applications in the energy storage system product design process, and is mainly supported by general technology modules, state estimation modules, life prediction modules and control decision modules. The remaining modules can be increased or decreased as needed. The product operation and maintenance platform is aimed at applications in the energy storage system product operation and maintenance process, and is supported by all technical modules of the core technology layer. The product reuse platform is aimed at applications in the energy storage system product reuse process, and is mainly supported by general technology modules, state estimation modules and life prediction modules.

[0053] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0054] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0055] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0056] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0057] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0058] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0059] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for designing a hierarchical technical framework for energy storage system health management, characterized in that: include: Classify the core technology modules in the energy storage system health management process, and establish the core technology layer based on the classification results; Based on the results of the operation phase division of the energy storage system, a product platform layer is established; wherein the product platform layer includes: a design platform, an operation and maintenance platform, and a reuse platform; Designing and establishing different product lines based on each of the product platforms to establish a product line layer; wherein the product lines are used to design and produce energy storage products; The core technology layer includes: general technology module, state estimation module, fault diagnosis module, fault warning module, life prediction module and control decision module; The general technology module, battery model submodule, battery database submodule and model parameter identification submodule; The state estimation module includes a state of charge estimation submodule, a health state estimation submodule, a power state estimation submodule and a SOX estimation submodule; The SOX estimation submodule includes a temperature state estimation submodule, an energy state estimation submodule and a safety state estimation submodule; The fault diagnosis module includes an internal short circuit fault diagnosis submodule, an external short circuit fault diagnosis submodule, an overcharge / over discharge fault diagnosis submodule, an inconsistency fault diagnosis submodule and a thermal runaway fault diagnosis submodule; The fault warning module includes a thermal abuse thermal runaway warning submodule, a mechanical abuse thermal runaway warning submodule, and an electrical abuse thermal runaway warning submodule; The life prediction module includes an early life prediction submodule, a mid-term life prediction submodule and a terminal life prediction submodule; The control decision module includes a charging strategy submodule, a balancing strategy submodule, a thermal management strategy submodule and a maintenance strategy submodule.

2. The method for designing a hierarchical technical framework for energy storage system health management according to claim 1, characterized in that: Also includes: Establish a custom project layer to customize products based on customer change requirements.

3. The method for designing a hierarchical technical framework for health management of an energy storage system according to claim 1 is characterized in that: The product design platform is used for energy storage system product design; the product design platform supporting technology components include the general technology module, the state estimation module, the life prediction module and the control decision module; The product operation and maintenance platform is used for operation and maintenance of energy storage system products; The product operation and maintenance platform supporting technology components include all modules in the core technology layer; The product recycling platform is used for recycling products for energy storage systems; The product reuse platform supporting technology comprises the general technology module, the state estimation module and the life prediction module.

4. The method for designing a hierarchical technical framework for health management of an energy storage system according to claim 2 is characterized in that: The customer change requirement is a change requirement for functions and / or characteristics, or a change requirement for functions and / or performance requirements under characteristics; Such changes include additions, alterations and deletions.

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