Energy storage valve simulation analysis method and device, electronic equipment and storage medium

Abstract

The invention discloses an energy storage valve simulation analysis method and device, electronic equipment and a storage medium, and the method comprises the steps: generating a through-flow loop structure model of an energy storage valve sub-module, extracting stray parameters of the through-flow loop structure model, obtaining a short-circuit electrical parameter value of a circuit model based on the stray parameters and the circuit model of the energy storage valve sub-module, and obtaining a short-circuit electrical parameter value of the circuit model; and performing force simulation on the conductor parts based on the short-circuit electrical parameter values to obtain a force simulation analysis result, so that force simulation of the conductor parts in the through-flow loop structure model can be realized, namely simulation analysis of the energy storage valve can be realized, and electric power generated by each conductor part where the through-flow loop is located can be simulated under the condition that the energy storage valve is in a short-circuit fault. According to the force simulation analysis result, reason analysis and evaluation can be carried out, and reference is provided for optimizing the structural design of the energy storage valve sub-module.

Description

Technical Field

[0001] The present application belongs to the field of energy storage technology, and in particular relates to a simulation analysis method, device, electronic equipment and storage medium for an energy storage valve. Background Art

[0002] Energy storage valve is a device used to store and release energy, usually for storing electrical energy. Energy storage devices generally use weights or compressed gas to store energy. When energy needs to be released, the energy storage device will release the energy and convert it into electrical energy output through a generator.

[0003] Energy storage valves have broad application prospects in the field of energy storage. They can be used to balance the volatility of renewable energy and improve the utilization rate of renewable energy. At the same time, energy storage valves can also be used for peak and valley electricity price regulation, backup power supply and electricity market transactions. With the rapid development of renewable energy and the continuous advancement of energy storage technology, energy storage valves are expected to be more widely used in the future.

[0004] At present, the research on flexible DC transmission converter valves has been relatively mature, but the research on energy storage valves, as a new energy storage device, has just started, and the industry still lacks simulation and analysis solutions for energy storage valves. Summary of the invention

[0005] The present application provides a method, device, electronic device and computer-readable storage medium for simulating and analyzing an energy storage valve, which can realize simulating and analyzing an energy storage valve.

[0006] In a first aspect, the present application provides a method for simulating and analyzing an energy storage valve, comprising:

[0007] Generate a flow loop structure model of the energy storage valve submodule, wherein the flow loop structure model includes: a power module and a conductor component in the flow loop;

[0008] Extracting stray parameters of the above-mentioned flow loop structural model;

[0009] Based on the stray parameters and the circuit model of the energy storage valve submodule, a short-circuit electrical parameter value of the circuit model is obtained, wherein the circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the through-current loop structure model, and the short-circuit electrical parameter value includes: a current value measured by the battery and a current value of the power module when the energy storage valve submodule is short-circuited;

[0010] Based on the short-circuit electrical parameter values, force simulation is performed on the conductor component to obtain a force simulation analysis result.

[0011] By generating a flow loop structural model of the energy storage valve submodule, and combining the short-circuit electrical parameter values ​​of the circuit model obtained based on the stray parameters and the circuit model of the energy storage valve submodule, the force simulation of the conductor components in the flow loop structural model can be realized, that is, the simulation analysis of the energy storage valve can be realized. Specifically, the present application can simulate the electric force generated by each conductor component of the flow loop in the case of a short-circuit fault of the energy storage valve. Furthermore, cause analysis and evaluation can be performed based on the force simulation analysis results to provide a reference for optimizing the structural design of the energy storage valve submodule.

[0012] In some embodiments, force simulation is performed on the conductor component based on the short-circuit electrical parameter value to obtain a force simulation analysis result including:

[0013] The short-circuit electrical parameter value is coupled as an excitation source parameter value of the current-carrying loop structure model, and the electromotive force of the conductor component is obtained based on a transient field solver;

[0014] The above-mentioned electric force is subjected to dynamic simulation coupling analysis to obtain the force simulation analysis result.

[0015] In some embodiments, coupling the short-circuit electrical parameters as excitation source parameter values ​​of the current-carrying loop structure model and obtaining the electromotive force of the conductor component based on a transient field solver includes:

[0016] Importing the flow loop structure model into the transient field solver;

[0017] Input the short-circuit electrical parameters as excitation source parameter values ​​of the through-current loop structure model into the transient field solver;

[0018] The calculation parameters are set to solve and obtain the electromotive force of the above-mentioned conductor components.

[0019] In some embodiments, the above-mentioned dynamic simulation coupling analysis of the above-mentioned electric force is performed to obtain the above-mentioned force simulation analysis result, including:

[0020] Creating a transient structure corresponding to the energy storage valve submodule in a collaborative simulation environment;

[0021] The above electrodynamic simulation results are imported into the above transient structure to perform structural strength simulation to obtain the above force simulation results.

[0022] In some embodiments, the conductor components include: upper busbars, power module connection bars, combiner cabinet copper bars, and battery cabinets;

[0023] The method of obtaining the electromotive force of the conductor component based on the transient field solver includes:

[0024] In the transient field solver, the power module, the upper busbar, the power module connecting bar, the combiner copper bar and the battery cabinet are set as fixed constraints.

[0025] In some embodiments, the above-mentioned construction of the flow circuit structure model of the energy storage valve submodule includes at least one of the following simplified operations:

[0026] Eliminate components in the current loop that are not related to the current path;

[0027] Eliminate the locations where no current flows in the same conductor;

[0028] Fill the conductor parts with small gaps;

[0029] Eliminate fillets and chamfers from conductor parts;

[0030] Eliminate the spring contact fingers in the through-current circuit;

[0031] If there is a gap between the moving and static contacts in the current-carrying circuit, adjust the inner diameter of the contact seat to be consistent with the size of the moving contact.

[0032] In some embodiments, the above-mentioned stray parameters include: stray inductance;

[0033] The above-mentioned stray parameters extracted from the above-mentioned flow loop structure model include:

[0034] Based on the way of solving Maxwell's equations by boundary element method, the inductance simulation of the above-mentioned current loop structure model is carried out to obtain the stray inductance.

[0035] In some embodiments, the circuit model further includes: a delay switch;

[0036] The circuit model based on the stray parameters and the energy storage valve submodule, obtaining the short-circuit electrical parameter value of the circuit model includes:

[0037] The energy storage valve submodule is short-circuited based on the time delay switch.

[0038] In some embodiments, the energy storage valve submodule includes a full-bridge power module and a battery system.

[0039] In some embodiments, the energy storage valve submodule includes a half-bridge power module and a battery system.

[0040] In a second aspect, the present application provides a storage valve simulation analysis device, comprising:

[0041] A model generation module is used to generate a flow loop structure model of the energy storage valve submodule, wherein the flow loop structure model includes: a power module and a conductor component in the flow loop;

[0042] A stray extraction module, used to extract stray parameters of the above-mentioned flow loop structure model;

[0043] A short-circuit analysis module, configured to obtain a short-circuit electrical parameter value of the circuit model based on the stray parameters and the circuit model of the energy storage valve submodule, wherein the circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the through-current loop structure model, and the short-circuit electrical parameter value includes: a current value measured by the battery and a current value of the power module when the energy storage valve submodule is short-circuited;

[0044] The force simulation module is used to perform force simulation on the conductor component based on the short-circuit electrical parameter value to obtain a force simulation analysis result.

[0045] In a third aspect, the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method of the first aspect when executing the computer program.

[0046] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method of the first aspect is implemented.

[0047] In a fifth aspect, the present application provides a computer program product, which includes a computer program. When the computer program is executed by one or more processors, it implements the method of the first aspect.

[0048] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 This is a schematic diagram of the circuit architecture of a high-voltage AC direct-mounted energy storage valve provided in an embodiment of the present application;

[0051] Figure 2 This is a schematic diagram of a circuit architecture of a DC direct-hung energy storage valve provided in an embodiment of the present application;

[0052] Figure 3Schematic diagram of the circuit structure of a half-bridge energy storage valve submodule provided in an embodiment of the present application;

[0053] Figure 4 Schematic diagram of the circuit structure of a full-bridge energy storage valve submodule provided in an embodiment of the present application;

[0054] Figure 5 It is a schematic diagram of the implementation flow of the energy storage valve simulation analysis method provided in the embodiment of the present application;

[0055] Figure 6 Schematic diagram of the implementation process of S104 of the energy storage valve simulation analysis method provided in the embodiment of the present application;

[0056] Figure 7 It is a schematic diagram of a circuit model when the energy storage valve submodule provided in an embodiment of the present application is short-circuited;

[0057] Figure 8 It is a schematic diagram of the electrodynamic curve of the copper busbar in the flow circuit in the energy storage valve simulation analysis method provided in the embodiment of the present application;

[0058] Fig. 9 It is a grid comparison diagram generated by the grid accuracies of different areas set by the simulation software in the energy storage valve simulation analysis method provided in the embodiment of the present application;

[0059] Fig.10 It is a schematic diagram of a model of a power module of an energy storage valve submodule constructed in the energy storage valve simulation analysis method provided in an embodiment of the present application;

[0060] Fig.11 It is a model schematic diagram of the flow circuit structure model of the energy storage valve submodule constructed in the energy storage valve simulation analysis method provided in the embodiment of the present application;

[0061] Fig.12 This is a schematic diagram of a circuit model when another energy storage valve submodule is short-circuited provided in an embodiment of the present application;

[0062] Fig.13 It is a structural schematic diagram of a simulation analysis device for an energy storage valve provided in an embodiment of the present application;

[0063] Fig.14 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0066] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0067] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0068] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0069] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), unless otherwise clearly and specifically defined.

[0070] Energy storage valve is a device used to store and release energy, usually for storing electrical energy. Energy storage devices generally use weights or compressed gas to store energy. When energy needs to be released, the energy storage device will release the energy and convert it into electrical energy output through a generator.

[0071] Energy storage valves have broad application prospects in the field of energy storage. They can be used to balance the volatility of renewable energy and improve the utilization rate of renewable energy. At the same time, energy storage valves can also be used for peak and valley electricity price regulation, backup power supply and electricity market transactions. With the rapid development of renewable energy and the continuous advancement of energy storage technology, energy storage valves are expected to be more widely used in the future.

[0072] When the energy storage valve submodule fails due to a short circuit, if the insulated-gate bipolar transistor (IGBT) in the power module cannot be reliably turned off, the generated electromotive force will cause deformation of the connecting row. Therefore, it is necessary to establish a simulation model to simulate the force generated by the energy storage valve submodule on the power module and the conductor components in the current flow loop when the energy storage valve submodule is short-circuited, so as to determine the stress generated on each conductor component when the energy storage valve submodule is short-circuited, and the deformation of the conductor components.

[0073] However, the research on flexible DC transmission converter valves is relatively mature, but the research on energy storage valves, as a new energy storage device, has just started, and the industry still lacks simulation and analysis solutions for energy storage valves.

[0074] Based on this, the embodiment of the present application provides a simulation analysis method for an energy storage valve, which can generate a flow loop structural model of the energy storage valve submodule, and combine the short-circuit electrical parameter values ​​of the circuit model obtained based on the stray parameters and the circuit model of the energy storage valve submodule, so as to achieve force simulation of the conductor components in the flow loop structural model, that is, to achieve simulation analysis of the energy storage valve. In the event of a short-circuit fault in the energy storage valve, the electric force generated by each conductor component of the flow loop where the flow loop is located can be simulated, and cause analysis and evaluation can be performed based on the force simulation analysis results, providing a reference for optimizing the structural design of the energy storage valve submodule. In order to illustrate the technical solution proposed in the embodiment of the present application, it is described below through specific embodiments.

[0075] The following is a description of a method for simulating and analyzing an energy storage valve provided in an embodiment of the present application from a technical perspective. The method for simulating and analyzing an energy storage valve can be applied to a high-voltage AC directly-mounted energy storage valve or a DC directly-mounted energy storage valve, that is, a simulation analysis can be performed on a high-voltage AC directly-mounted energy storage valve or a DC directly-mounted energy storage valve, and the execution subject can be an electronic device with a data processing function (that is, capable of performing data processing functions such as model construction, model simulation, parameter calculation, and parameter extraction), and specifically, the simulation analysis can be realized by installing simulation software in the electronic device. The electronic device includes but is not limited to a computer, a server, and the like.

[0076] See also Figure 1 to Figure 2 , Figure 1 A schematic diagram of the circuit architecture of a high-voltage AC direct-mounted energy storage valve is shown. Figure 2 A schematic diagram of the circuit architecture of a DC directly mounted energy storage valve is shown.

[0077] Depend on Figure 1 and Figure 2 It can be seen that the energy storage valve usually includes a plurality of energy storage valve submodules (denoted by SM in the figure), for example Figure 1Including 3*N energy storage submodules SM ( Figure 2 In the figure, they are represented as 3 groups SM1~SMN), and Figure 3 The DC direct-mounted energy storage system 13 includes N energy storage submodules SM ( Figure 3 are represented as SM1~SMN respectively).

[0078] In the embodiment of the present application, the energy storage valve submodule in the energy storage valve may include a battery system and a power module, wherein the power module may be used as follows Figure 3 The half-bridge power module shown in the figure can also be used as Figure 4 The full-bridge power module shown.

[0079] The power module may include an IGBT, a voltage-equalizing resistor and a DC capacitor, which are the main components of the power module.

[0080] It should be noted that the energy storage valve simulation analysis method provided in the embodiment of the present application is mainly for simulating the flow circuit in the above-mentioned energy storage valve sub-module, that is, the simulation object is the flow circuit in the above-mentioned energy storage valve sub-module, and the flow circuit is composed of a conductor and is a conductive path in the energy storage valve sub-module.

[0081] See also Figure 5 , Figure 5 FIG. 1 is a schematic diagram showing the implementation process of the energy storage valve simulation analysis method provided in the embodiment of the present application. Figure 5 As shown, the energy storage valve simulation analysis method in the embodiment of the present application may include:

[0082] S101, generating a flow circuit structure model of the energy storage valve submodule.

[0083] The above-mentioned current-carrying loop structural model includes a power module and conductor components in the current-carrying loop.

[0084] The through-circuit is the conductive path in the energy storage valve submodule.

[0085] Conductor components refer to components that can conduct current in the above-mentioned current-carrying circuit. The above-mentioned conductor components may include but are not limited to power modules, power module connecting bars, upper busbars, copper bars of junction cabinets and battery cabinets, positive busbars, negative busbars, pipe busbars, etc.

[0086] In a specific application, the flow circuit structure model of the energy storage valve submodule can be generated by a model creation tool. For example, the flow circuit structure model is obtained by modeling the conductor components in the energy storage valve submodule.

[0087] S102, extracting stray parameters of the flow loop structure model.

[0088] The stray parameters are parameters such as equivalent inductance, equivalent resistance, equivalent capacitance, etc. presented by the conductor components in the above-mentioned current loop structure model.

[0089] In the embodiment of the present application, the above-mentioned stray parameters may include but are not limited to stray inductance and resistance.

[0090] After determining the above-mentioned current loop structural model, the corresponding stray inductance parameters of each conductor component can be determined by analyzing the material, size and other information of the conductor components in the current loop structural model. After determining the stray inductance parameters of each conductor component, the stray parameters of the current loop structural model can be extracted.

[0091] S103, based on the stray parameters and the circuit model of the energy storage valve submodule, obtaining a short-circuit electrical parameter value of the circuit model.

[0092] The circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the flow loop structure model.

[0093] The short-circuit electrical parameter value includes the current value of the battery side (ie, the battery system side) and the current value of the power module when the energy storage valve submodule is short-circuited.

[0094] The short circuit of the energy storage valve submodule includes the bypass switch being closed incorrectly and the upper and lower tubes being connected directly. The energy storage valve submodule is put into a short circuit state by simulating the IGBT direct fault.

[0095] The circuit model of the energy storage valve sub-module is constructed according to the real model of the energy storage valve sub-module, and the stray parameters are substituted into the circuit model. Since the circuit model of the energy storage valve sub-model is constructed based on the real model, and the flow circuit structure model of the energy storage valve sub-module is constructed based on the flow circuit in the energy storage valve sub-model, the circuit model of the energy storage valve sub-module includes the flow circuit structure model of the energy storage valve sub-module.

[0096] The circuit model is set to be in a short-circuit state, and the short-circuit electrical parameter value is obtained by acquiring the electrical parameter value of the corresponding position of the circuit model, that is, the current value of the battery side and the current value of the power module can be obtained.

[0097] S104, performing force simulation on the conductor component based on the short-circuit electrical parameter value to obtain a force simulation analysis result.

[0098] The above force simulation analysis results include simulation analysis of electric force, simulation analysis of stress, simulation analysis of deformation, etc.

[0099] Among them, electromotive force refers to the magnetic field around the wire through which current passes, and the magnetic field acts on the ferromagnetic material within its range to cause it to be subjected to force. Therefore, two wires with current in the same direction attract each other, and two wires with current in opposite directions repel each other, forming a force.

[0100] By using simulation software to simulate the forces acting on the conductor components based on the short-circuit electrical parameter values, the force simulation analysis results can be obtained, that is, the force conditions of the conductor components can be obtained, and the stress on the current loop and the strength of the current loop can be further analyzed.

[0101] In a specific application, force simulation analysis may be performed on each conductor component in the flow loop structure model of the energy storage valve submodule to obtain force simulation analysis results of each conductor component.

[0102] From the above, it can be seen that the energy storage valve simulation analysis method provided in the embodiment of the present application can realize the force simulation of the conductor components in the flow loop structure model by generating the flow loop structure model of the energy storage valve submodule, and combining the short-circuit electrical parameter value of the circuit model obtained based on the stray parameters and the circuit model of the energy storage valve submodule, that is, to realize the simulation analysis of the energy storage valve. Specifically, the present application can simulate the electric force generated by each conductor component of the flow loop in the case of a short-circuit fault of the energy storage valve. Furthermore, cause analysis and evaluation can also be performed based on the force simulation analysis results to provide a reference for optimizing the structural design of the energy storage valve submodule.

[0103] In some embodiments, see Figure 6 , Figure 6 This is a schematic diagram of the implementation process of S104 in the energy storage valve simulation analysis method provided in the embodiment of the present application. Figure 6 As shown, S104 may include:

[0104] S1041: Coupling the short-circuit electrical parameter value as the excitation source parameter value of the current-carrying loop structure model, and obtaining the electromotive force of the conductor component based on the transient field solver.

[0105] After determining the current value of the battery side and the current value of the power module when the energy storage valve submodule is short-circuited, the current value of the battery side when short-circuited is used as the excitation of the submodule's current loop structure model, and the electromotive force corresponding to the conductor component under the excitation is calculated.

[0106] In specific applications, the electrodynamic simulation computing platform can be used to realize the electrodynamic calculation of conductor components.

[0107] In a specific application, the above-mentioned transient field solver may be a tool provided by an electrodynamic simulation computing platform to solve the electrodynamic force of a conductor component in a transient electric field.

[0108] By adding the short-circuit electrical parameter value as the excitation source parameter value of the current loop structure model in the above-mentioned transient field solver, the electromotive force of the conductor component in the above-mentioned current loop structure model can be obtained through the transient field solver.

[0109] It should be noted that the above-mentioned electrodynamic simulation computing platform can be Ansys Maxwell simulation software. It should be noted that the above-mentioned electrodynamic simulation computing platform can also be other simulation software that can realize electromagnetic field simulation, such as COMSOL Multiphysics, CST Studio Suite, Finite Element Method Magnetics (FEMM), etc.

[0110] Among them, Ansys Maxwell simulation software is a low-frequency electromagnetic field simulation software used to design and analyze motors, drives, actuators, sensors, transformers and other electromagnetic and electromechanical devices. The above Ansys Maxwell simulation software can accurately depict the characteristics of nonlinear transient motion of electromechanical components. It can be understood that Ansys Maxwell simulation software is only an example, and other simulation software can also be selected as the above electrodynamic simulation calculation platform according to application requirements.

[0111] For example, taking the above-mentioned electric power simulation computing platform as Ansys Maxwell simulation software as an example, the specific implementation of S1041 is described as follows:

[0112] 1) Enter the 3D calculation interface. You can select the 3D calculation interface through the working interface.

[0113] 2) Importing the flow loop structure model obtained in S101 into the 3D calculation interface, wherein the storage format of the flow loop structure model may be *.STEP format.

[0114] 3) Select the computational field environment. This embodiment requires solving the electrodynamic force, so the transient field solver is selected.

[0115] 4) Material definition: The conductor components in the energy storage valve submodule include busbars, battery cells, battery cell connecting bars, etc. The busbars and connecting bars are made of copper. When the battery cells are turned on, they are almost equivalent to pure copper. Therefore, the material of the flow circuit structure model corresponding to the energy storage valve submodule can be defined as a pure copper metal block. The conductive properties of the pure copper metal block are shown in Table 1:

[0116] Table 1:

[0117] Material Relative conductivity Relative dielectric constant Volume conductivity copper 0.999991 1 5.8*107siemens / m

[0118] 5) Initial boundary definition: the 3D model uses default boundary conditions and no settings are required.

[0119] 6) Load input: In the engineering drawing area, right-click the interface to change from body selection to surface selection and perform the following operations:

[0120] a. Select the current inflow and outflow surface;

[0121] b. Define the number of conductor turns and the direction of current flow;

[0122] c. Define windings;

[0123] d. Assign a value or formula to the current;

[0124] e. Assign coil attributes to the winding;

[0125] f. Battery side current of the energy storage valve submodule when the coupling is short-circuited.

[0126] For example, the circuit model when the energy storage valve submodule is short-circuited is as follows: Figure 7 As shown in the figure, the battery voltage is set to 1.5kV, the power module is brought into the finite element analysis model, the resistance and inductance of the battery circuit are represented by lumped parameters, and when a short circuit occurs, the current value of the submodule battery side and the current value of the IGBT side circuit can be analyzed. The simulated current value is assigned to the corresponding position of the copper busbar. Figure 7 B represents battery, fuse represents fuse, Q3D represents finite element model of power module, R1, R2, R3 represent resistance of each branch, L1, L2, L3 represent inductance of each branch, C1, C2 represent capacitance of each branch, and A represents ammeter.

[0127] 7) Calculation parameter settings: set the simulation time to 2ms after the energy storage valve submodule is short-circuited, the simulation step to 0.1ms, and set the solution force. A force Force can be set for each conductor component that needs to solve the electromotive force. In this way, the simulation output result can be the electromotive force curve of each conductor component.

[0128] For example, the electrodynamic curve of the copper busbar in the current loop can be as follows: Figure 8 As shown, Figure 8 The horizontal axis is the simulation time, in ms, and the vertical axis is the simulation electromotive force result, in Kn. Figure 8 Each curve in the figure corresponds to the electrodynamic simulation calculation result of a conductor component.

[0129] After the above operations, Ansys Maxwell simulation software can automatically output the simulation results. Specifically, Ansys Maxwell simulation software can be used for post-processing. The post-processing of Ansys Maxwell simulation software includes three parts: processing of field diagrams, processing of curves and surface paths, and application of field calculator.

[0130] Various types of field diagrams can be drawn in the Fields field diagram list. These include vector magnetic potential A, magnetic field intensity H, magnetic induction intensity B, electric density J, energy Energy, other field quantities Other, and user-defined field quantity NamedExpression items. Each field quantity can be divided into options such as vector diagrams and scalar diagrams. In the transient magnetic field, select SaveFields to store the moment, and the field quantity at each moment can be viewed.

[0131] By creating a transient report in Results, you can directly view the current curve and transient electromotive force curve of the conductor component. The three-dimensional model electromotive force has four curves: x, y, z and resultant force, and these curves can be extracted.

[0132] Select force or current in Results, click New Report, and the corresponding Plot will appear in Results in the Project Management column. Select Force Plot 1, right-click, and select Export to store the data in Excel.

[0133] In addition, you can also select a certain moment in the calculation (such as 10ms) in the transient field to view cloud maps such as the magnetic field intensity H and magnetic induction intensity B.

[0134] It should be noted that since different calculation areas require different grid accuracies, it is also necessary to select the conductor parts that need attention respectively and set up the grid according to different grid accuracies. Generally, one grid accuracies is set for conductor parts and one grid accuracies is set for air bags. Among them, the grid accuracies can be set finer for the conductor parts that need attention, so that the grid will be denser.

[0135] For example, Fig. 9 As shown, Fig. 9 (a) is a schematic diagram of the grid division of the busbar. Fig. 9 (b) is a schematic diagram of the mesh division of the air bag. It can be clearly seen that the grid of the busbar is denser than that of the air bag.

[0136] S1042: Perform dynamic simulation coupling analysis on the electric force to obtain force simulation analysis results.

[0137] By coupling the above-mentioned electrodynamic simulation results with the finite element analysis model, jointly simulating the electrodynamic simulation results with the transient structure (Transient Structural), and importing the electrodynamic simulation results into the above-mentioned transient structure, the instantaneous force of the flow circuit structural model of the energy storage valve submodule can be simulated and solved, and then the force simulation analysis results can be obtained.

[0138] The coupling between the electric power and the structure can be realized by using a collaborative simulation environment, and the collaborative simulation environment may include but is not limited to an ABAQUS collaborative simulation environment, an Ansys Workbench collaborative simulation environment, an Autodeskautodesksimulation collaborative simulation environment, and the like.

[0139] Taking the Ansys Workbench collaborative simulation environment as an example, the Ansys Workbench can be used to import the electric force obtained by the Ansys Maxwell simulation software into the transient structure. Among them, the electric force calculated by the Ansys Maxwell simulation software is a volume force, so here the volume force is imported into the transient structure. When importing the electric force obtained by the Ansys Maxwell simulation software, it is necessary to ensure that Ansys Maxwell and the model used (in this embodiment, the flow circuit structure model of the above-mentioned energy storage valve submodule) are the same, otherwise it will cause data transmission errors.

[0140] For transient structures, perform structural strength simulation. The specific operations are as follows:

[0141] 1) Set the solution time. For example, select 0.1ms for the instantaneous force solution time, 0ms for the solution start time, and 0.19ms for the solution end time.

[0142] 2) Grid division, for example, setting the grid accuracy to 5mm.

[0143] 3) Material setting: Since the connecting copper bar in the flow circuit structure model of the above-mentioned energy storage valve submodule is pure copper, the Young's modulus, yield strength and Poisson's ratio are set to pure copper, the insulator core rod is glass fiber reinforced plastics (GRP), the flange is structural steel, and the small insulator is made of bulk molding compound (BMC).

[0144] The material property settings in static analysis have the following requirements:

[0145] a. Young's modulus and Poisson's ratio must be filled in;

[0146] b. Density needs to be added only when gravity and inertia are considered;

[0147] c. Yield strength only needs to be added when using a safety factor cloud chart to display results.

[0148] It should be noted that Poisson's ratio has little effect on the simulation, so the value of metal materials can be uniformly taken as 0.3.

[0149] 4) Constraint setting: the gravity of the copper bar is set to the standard earth gravity, and the direction is vertically downward, which should be consistent with the actual gravity direction; select fixed support in the support mode, and usually set the fixed part of the energy storage valve submodule to "fixed constraint" (FixedSupport).

[0150] It should be noted that the fixed constraint setting mainly considers the following two aspects:

[0151] a. The actual structural strength of the object itself is relatively high, and deformation is not considered, such as the fixing body of the copper busbar;

[0152] b. Devices that were not damaged during previous capacitor short-circuit tests, such as the entire power module.

[0153] Therefore, for the flow circuit model corresponding to the above energy storage valve submodule, the following four types of fixed constraints can be set:

[0154] 1. The positive and negative copper bars are fixed to the valve tower frame with tie rods, so the contact surface between the two is set as a fixed constraint;

[0155] 2. The fuse positions of the positive and negative copper bars are set as fixed constraints because their terminals are considered as fixed parts;

[0156] 3. The power module as a whole is considered not to be deformed, so the busbar connected to it is considered to be a fixed part and is set as a fixed constraint;

[0157] 4. The cabinet itself is considered to be non-deformed and is set as a fixed constraint.

[0158] The plane for setting the fixed constraint is a surface on an essentially fixed object, and is set to be fixed at the insulator position.

[0159] In some embodiments, the conductor components may specifically include: upper busbars, power module connection bars, busbars and battery cabinets. Based on this, the above-mentioned acquisition of the electric power of the conductor components based on the transient field solver includes:

[0160] In the transient field solver, the power modules, upper busbars, power module connecting bars, combiner copper bars and battery cabinets are set as fixed constraints.

[0161] After the above operations are completed, you can get the stress cloud map of each conductor component. For example, you can view the stress cloud map of each copper busbar in the current loop, such as the stress cloud map of the copper busbar of the combiner cabinet, the stress cloud map of the upper and lower busbars, and the stress cloud map of the copper busbar of the power module.

[0162] From the above, it can be seen that by coupling the short-circuit electrical parameter value as the excitation source parameter value of the flow loop structure model and solving it with the transient field solver, the electromotive force of each conductor component in the flow loop structure model can be obtained. The electromotive force is coupled with the transient structure, and the force simulation results of each conductor component in the simulation object are further analyzed. The force conditions of each conductor component when the energy storage valve submodule fails at the level of short circuit can be analyzed intuitively and accurately. According to the force simulation analysis results, cause analysis and evaluation can also be carried out, providing a reference for optimizing the structural design of the energy storage valve submodule.

[0163] In some embodiments, when constructing the flow circuit structure model of the energy storage valve submodule, at least one of the following simplified operations may be included:

[0164] 1) Eliminate components in the current loop that are not related to the current path;

[0165] Among them, the components in the current loop that are not related to the current path include but are not limited to insulators, mechanism boxes, shielding covers, screws, and shells that are not used as current loops.

[0166] 2) Eliminate the locations where no current flows in the same conductor;

[0167] If there are different flow positions in the same conductor, the non-flowing positions can be cut off at will. For example, for a three-way conductor, the flow positions on both sides are retained, and the other end can be processed at will and removed, making the created model simpler.

[0168] 3) Fill the conductor parts with small gaps, including filling threaded holes and other places.

[0169] 4) Eliminate fillets and chamfers of conductor parts;

[0170] 5) Remove the spring contact fingers in the through-current circuit;

[0171] 6) If there is a gap between the moving and static contacts in the current-carrying circuit, adjust the inner diameter of the contact seat to be consistent with the size of the moving contact.

[0172] If there is a gap between the moving and static side contacts, modify the inner diameter of the contact holder to make its size consistent with the moving contact, that is, the current path cannot be broken, nor can it be an interference fit. The excess gap of the contact holder can be filled to make the grid easier to divide.

[0173] In addition, engineers can directly replace actual parts with equal-diameter straight conductors for positions that do not require attention to ensure the current path. Since the air bag setting requires that the current inlet and outlet surfaces must coincide with the air bag surface, extended conductors need to be added in the current inlet and outlet directions to ensure more accurate calculations. Generally, 2 meters of extended conductors are added in the current inlet and outlet directions. The extended conductors can be but are not limited to solid cylinders or flat copper strips. This application has no requirements for the shape or diameter of the above-mentioned extended conductors.

[0174] In the embodiment of the present application, each component can be modeled by Solidwork software according to the flow circuit structure model and size parameters of the energy storage valve submodule, and the actual flow circuit structure model of the energy storage valve submodule can be simplified according to the above simplification operation. For example, the constructed power module model of the energy storage valve submodule can be as follows: Fig.10 As shown in the figure, 01 represents the positive busbar, 02 represents the negative busbar, 03 represents the IGBT, 04 represents the diode, and 05 represents the heat sink.

[0175] The flow circuit structure model of the energy storage valve submodule is constructed as follows: Fig.11 shown.

[0176] Through the above method, a simplified flow loop structure model can be constructed to reduce the complexity of the model, making the constructed flow loop structure model simple and lightweight, alleviating the pressure of simulation calculation and reducing the resources used for calculation.

[0177] In some embodiments, taking the stray parameter as stray inductance as an example, the above S102 may include the following steps:

[0178] Based on the way of solving Maxwell's equations by boundary element method, inductance simulation is performed on the current loop structure model to obtain stray inductance.

[0179] In specific applications, since inductance and capacitance are inherent characteristics of the circuit structure itself and have nothing to do with the current, even if the current increases and the magnetic flux increases, the inductance remains unchanged. Therefore, the boundary element method is used to solve the Maxwell equations to obtain the distribution and size of the required magnetic flux density, electromagnetic force, current density and other parameters.

[0180] In specific applications, inductance calculation software can be used to extract stray inductance current. Inductance calculation software includes but is not limited to Air-Cored Coil Calculator, Ansys Q3D Extracto, etc.

[0181] Taking Ansys Q3D Extracto, an inductance calculation software, as an example, Ansys Q3D Extractor can be used to build a finite element analysis model of the energy storage valve submodule, the end face of the positive busbar is used as the source current input, the end face of the negative busbar is used as the sink current input, and the excitation source is set to the default sinusoidal AC input to solve the stray inductance.

[0182] It should be noted that the above-mentioned finite element analysis software Ansys Q3D Extractor is an electromagnetic simulation tool that can extract stray parameters of any current-carrying structure. By modeling the actual busbar structure in a 1:1 ratio and defining the materials and parameters of each part, it can calculate parameters such as stray inductance, resistance, capacitance, and conductance.

[0183] In addition, due to the skin effect, the frequency has a great influence on the extraction of stray inductance, so it is necessary to select a broadband solution to improve the accuracy of the solution results. For example, you can choose a frequency of 1kHz. Moreover, when Ansys Q3DExtractor extracts stray inductance, it will divide the entire frequency domain into AC inductance (AC) solution area, DC inductance (DC) solution area, and the transition area in the middle according to the different skin depths. When selecting the solution frequency, the current frequency is not fixed, so it is necessary to give an equivalent frequency based on the turn-on and turn-off time of the device. When setting the broadband solution, the DC inductance (DC RL), AC inductance (AC RL), convergence error is 1%, the minimum number of steps is 1, the maximum number of steps is 10, the minimum number of steps below the convergence error is 1, and the percentage of each refinement is 30%.

[0184] After the above operations, the stray inductance of the flow circuit of the energy storage valve submodule can be determined by checking the simulation results.

[0185] In some embodiments, the above circuit model further includes a delay switch.

[0186] Accordingly, the above S103 may include:

[0187] The energy storage valve submodule is short-circuited based on the time delay switch.

[0188] For example, Fig.12 As shown, a delay switch Switch1 is added to the circuit model. When the delay switch Switch1 reaches the delay time, the circuit model will be triggered to short-circuit. This can reduce the situation where the circuit model is directly turned on and there will be noise.

[0189] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0190] Corresponding to the report creation method provided above, the embodiment of the present application also provides a storage valve simulation analysis device. Fig.13 The energy storage valve simulation analysis device 130 in the embodiment of the present application includes:

[0191] A model generation module 101 is used to generate a flow loop structure model of the energy storage valve submodule, wherein the flow loop structure model includes: a power module and a conductor component in the flow loop;

[0192] A stray extraction module 102, used to extract stray parameters of the above-mentioned flow loop structure model;

[0193] The short-circuit analysis module 103 is used to obtain the short-circuit electrical parameter value of the circuit model based on the stray parameters and the circuit model of the energy storage valve submodule, wherein the circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the through-current loop structure model, and the short-circuit electrical parameter value includes: the current value measured by the battery and the current value of the power module when the energy storage valve submodule is short-circuited;

[0194] The force simulation module 104 is used to perform force simulation on the conductor component based on the short-circuit electrical parameter value to obtain a force simulation analysis result.

[0195] In some embodiments, the force simulation module 104 includes:

[0196] The electromotive force acquisition unit is used to couple the short-circuit electrical parameter value into the excitation source parameter value of the current loop structure model, and acquire the electromotive force of the conductor component based on the transient field solver.

[0197] The coupling unit is used to perform dynamic simulation coupling analysis on the above-mentioned electric force to obtain the above-mentioned force simulation analysis result.

[0198] In some embodiments, the conductor components include: an upper busbar, a power module connection bar, a copper busbar of a combiner cabinet, and a battery cabinet. The electric power acquisition unit is specifically used to: in the above-mentioned transient field solver, set the above-mentioned power module, the above-mentioned upper busbar, the above-mentioned power module connection bar, the above-mentioned copper busbar of a combiner cabinet, and the above-mentioned battery cabinet as fixed constraints.

[0199] In some embodiments, the stray parameters include: stray inductance, and the stray extraction module 102 is specifically used to perform inductance simulation on the current loop structure model based on the boundary element method to solve Maxwell's equations to obtain the stray inductance.

[0200] In some embodiments, the circuit module further includes a time delay switch, and the short circuit analysis module 103 is further used to: short-circuit the energy storage valve submodule based on the time delay switch.

[0201] As can be seen from the above, in the embodiment of the present application, by generating a flow loop structural model of the energy storage valve submodule, and combining the short-circuit electrical parameter value of the circuit model obtained based on the stray parameters and the circuit model of the energy storage valve submodule, it is possible to realize the force simulation of the conductor components in the flow loop structural model, that is, to realize the simulation analysis of the energy storage valve. Specifically, the present application can simulate the electric force generated by each conductor component of the flow loop in the case of a short-circuit fault of the energy storage valve. Furthermore, according to the results of the force simulation analysis, cause analysis and evaluation can also be carried out to provide a reference for optimizing the structural design of the energy storage valve submodule.

[0202] Corresponding to the energy storage valve simulation analysis method provided above, the present application embodiment also provides an electronic device. Fig.14 The electronic device 14 in the embodiment of the present application includes: a memory 1401, one or more processors 1402 ( Fig.14 Only one is shown in the figure) and a computer program stored in the memory 1401 and executable on the processor. Among them: the memory 1401 is used to store software programs and modules, and the processor 1402 executes various functional applications and data processing by running the software programs and units stored in the memory 1401. Specifically, the processor 1402 implements the following steps when running the above-mentioned computer program stored in the memory 1401:

[0203] Generate a flow loop structure model of the energy storage valve submodule, wherein the flow loop structure model includes: a power module and a conductor component in the flow loop;

[0204] Extracting stray parameters of the above-mentioned flow loop structural model;

[0205] Based on the stray parameters and the circuit model of the energy storage valve submodule, a short-circuit electrical parameter value of the circuit model is obtained, wherein the circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the through-current loop structure model, and the short-circuit electrical parameter value includes: the current value of the battery side and the current value of the power module when the energy storage valve submodule is short-circuited;

[0206] Based on the short-circuit electrical parameter values, force simulation is performed on the conductor component to obtain a force simulation analysis result.

[0207] Assuming that the above is the first possible implementation mode, in the second possible implementation mode provided on the basis of the first possible implementation mode, the force simulation is performed on the conductor component based on the short-circuit electrical parameter value, and the force simulation analysis result obtained includes:

[0208] The short-circuit electrical parameter value is coupled as an excitation source parameter value of the current-carrying loop structure model, and the electromotive force of the conductor component is obtained based on a transient field solver;

[0209] The above-mentioned electric force is subjected to dynamic simulation coupling analysis to obtain the above-mentioned force simulation analysis result.

[0210] In a third possible implementation provided on the basis of the second possible implementation, the conductor component includes: an upper busbar, a power module connection bar, a combiner copper bar and a battery cabinet, and the electric power of the conductor component obtained based on the transient field solver includes:

[0211] In the transient field solver, the power module, the upper busbar, the power module connecting bar, the combiner copper bar and the battery cabinet are set as fixed constraints.

[0212] In a fourth possible implementation manner based on the first possible implementation manner, or based on the second possible implementation manner, or based on the third possible implementation manner, the processor 1402 further implements at least one of the following simplified operations when running the computer program stored in the memory 1401:

[0213] Eliminate components in the current loop that are not related to the current path;

[0214] Eliminate the locations where no current flows in the same conductor;

[0215] Fill the conductor parts with small gaps;

[0216] Eliminate fillets and chamfers from conductor parts;

[0217] Eliminate the spring contact fingers in the through-current circuit;

[0218] If there is a gap between the moving and static contacts in the current-carrying circuit, adjust the inner diameter of the contact seat to be consistent with the size of the moving contact.

[0219] In a fifth possible implementation based on the first possible implementation, or the second possible implementation, or the third possible implementation, the stray parameters include: stray inductance, and the stray parameters extracted from the current loop structure model include:

[0220] Based on the way of solving Maxwell's equations by boundary element method, the inductance simulation of the above-mentioned current loop structure model is carried out to obtain the stray inductance.

[0221] In a sixth possible implementation provided on the basis of the first possible implementation, or the second possible implementation, or the third possible implementation, the circuit model further includes: a delay switch;

[0222] The circuit model based on the stray parameters and the energy storage valve submodule, obtaining the short-circuit electrical parameter value of the circuit model includes:

[0223] The energy storage valve submodule is short-circuited based on the time delay switch.

[0224] It should be understood that in the embodiment of the present application, the processor 1402 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0225] The memory 1401 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1402. A part or all of the memory 1401 may also include a nonvolatile random access memory.

[0226] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the above-mentioned device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0227] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0228] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of external device software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0229] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the system embodiments described above are merely schematic. For example, the division of the above modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0230] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0231] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the associated hardware through a computer program. The above-mentioned computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the above-mentioned computer program includes computer program code, and the above-mentioned computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The above-mentioned computer-readable storage medium may include: any entity or device capable of carrying the above-mentioned computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer-readable memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the above-mentioned computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media does not include electrical carrier signals and telecommunication signals.

[0232] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A simulation analysis method for an energy storage valve, characterized in that: include: Generate a flow loop structure model of the energy storage valve submodule, wherein the flow loop structure model includes: a power module and a conductor component in the flow loop; Extracting stray parameters of the through-flow loop structural model; Based on the stray parameters and the circuit model of the energy storage valve submodule, a short-circuit electrical parameter value of the circuit model is obtained, wherein the circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the through-current loop structure model, and the short-circuit electrical parameter value includes: when the energy storage valve submodule is short-circuited, the current value of the battery side and the current value of the power module; A force simulation is performed on the conductor component based on the short-circuit electrical parameter value to obtain a force simulation analysis result.

2. The method according to claim 1, characterized in that Performing force simulation on the conductor component based on the short-circuit electrical parameter value to obtain force simulation analysis results includes: The short-circuit electrical parameter value is coupled as an excitation source parameter value of the current loop structure model, and the electromotive force of the conductor component is obtained based on a transient field solver; A dynamic simulation coupling analysis is performed on the electric force to obtain the force simulation analysis result.

3. The method according to claim 2, characterized in that The step of coupling the short-circuit electrical parameters into excitation source parameter values ​​of the current-carrying loop structure model and obtaining the electromotive force of the conductor component based on a transient field solver includes: Importing the flow loop structure model into the transient field solver; Inputting the short-circuit electrical parameters as excitation source parameter values ​​of the through-current loop structure model into the transient field solver; The calculation parameters are set to solve and obtain the electromotive force of the conductor component.

4. The method according to claim 2, characterized in that: The performing dynamic simulation coupling analysis on the electric force to obtain the force simulation analysis result includes: Creating a transient structure corresponding to the energy storage valve submodule in a collaborative simulation environment; The electrodynamic force simulation result is imported into the transient structure to perform structural strength simulation to obtain the force simulation result.

5. The method according to claim 2, characterized in that: The conductor components include: power module, upper busbar, power module connecting bar, combiner cabinet copper bar and battery cabinet; The step of obtaining the electromotive force of the conductor component based on a transient field solver comprises: In the transient field solver, the power module, the upper busbar, the power module connecting bar, the combiner cabinet copper bar and the battery cabinet are set as fixed constraints.

6. The method according to any one of claims 1 to 5, characterized in that: The construction of the flow circuit structure model of the energy storage valve submodule includes at least one of the following simplified operations: Eliminate components in the current loop that are not related to the current path; Eliminate the locations where no current flows in the same conductor; Fill the conductor parts with small gaps; Eliminate fillets and chamfers from conductor parts; Eliminate the spring contact fingers in the through-current circuit; If there is a gap between the moving and static contacts in the current-carrying circuit, adjust the inner diameter of the contact seat to be consistent with the size of the moving contact.

7. The method according to any one of claims 1 to 5, characterized in that: The stray parameters include: stray inductance; The extracting of the stray parameters of the through-flow loop structure model comprises: Based on the way of solving Maxwell's equations by boundary element method, inductance simulation is performed on the current loop structure model to obtain stray inductance.

8. The method according to any one of claims 1 to 5, characterized in that: The circuit model also includes: a delay switch; The obtaining of the short-circuit electrical parameter value of the circuit model based on the stray parameters and the circuit model of the energy storage valve submodule comprises: The energy storage valve submodule is short-circuited based on the time delay switch.

9. The method according to any one of claims 1 to 5, characterized in that: The energy storage valve simulation analysis method is applied to a high-voltage AC direct-connected energy storage valve or a DC direct-connected energy storage valve.

10. The method according to claim 9, characterized in that The energy storage valve submodule includes a full-bridge power module and a battery system.

11. The method according to claim 9, characterized in that The energy storage valve submodule includes a half-bridge power module and a battery system.

12. A simulation analysis device for an energy storage valve, characterized in that: include: A model generation module, used to generate a flow loop structure model of the energy storage valve submodule, wherein the flow loop structure model includes: a power module and a conductor component in the flow loop; A stray extraction module, used to extract stray parameters of the through-flow loop structure model; a short-circuit analysis module, configured to obtain a short-circuit electrical parameter value of the circuit model based on the stray parameters and the circuit model of the energy storage valve submodule, wherein the circuit model is constructed based on the circuit structure of the energy storage valve submodule and includes the through-current loop structure model, and the short-circuit electrical parameter value includes: a current value on the battery side and a current value of the power module when the energy storage valve submodule is short-circuited; The force simulation module is used to perform force simulation on the conductor component based on the short-circuit electrical parameter value to obtain a force simulation analysis result.

13. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 11 is implemented.

14. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

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