Method and device for generating three-dimensional separator structure, and method and device for calculating morphological parameters of three-dimensional separator structure generated thereby

Abstract

The present invention relates to a method and a device for generating a three-dimensional separator structure and a method and a device for calculating morphological parameters of a three-dimensional separator structure generated thereby. The method for generating a three-dimensional separator structure according to an embodiment of the present invention may include the steps in which a separator generator: determines the size of domains and voxels for a separator structure on the basis of design parameters input to a processor; selects a polyethylene separator weaving algorithm or a polypropylene separator weaving algorithm on the basis of components of the separator structure and whether the separator is multilayered; and generates the separator within the domain by using the selected algorithm and the design parameters.

Description

Method and device for forming a three-dimensional membrane structure, and method and device for calculating shape parameters of a three-dimensional membrane structure formed thereby

[0001] Cross-citation with related application(s)

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0025653, filed February 22, 2024, the entire contents of which are incorporated herein by reference.

[0003] The present invention relates to a method and device for forming a three-dimensional membrane structure, and a method and device for calculating shape parameters of a three-dimensional membrane structure formed thereby.

[0004] Digital twin technology creates a virtual replica of a real-world object within a computer, simulating potential real-world situations and predicting outcomes. This digital twin technology can be utilized in the research and development of secondary batteries.

[0005] In other words, by modeling the 3D electrode structure of a secondary battery in a virtual space within a computer using digital twin technology and verifying the characteristics of the formed 3D electrode structure, the costs and time required for actual secondary battery manufacturing can be reduced. Accordingly, Republic of Korea Patent Application Publication No. 10-2021-0063821 discloses "A Method for Modeling a 3D Electrode Structure Using Digital Twin Technology."

[0006] Meanwhile, batteries include not only electrodes but also separators as components. However, prior art only discloses modeling of three-dimensional electrode structures, as described above. Therefore, prior art cannot verify the characteristics of the separator, making it difficult to verify the separator as a battery component.

[0007] The purpose of the present invention is to provide a method and device for forming a three-dimensional separator structure for a separator among battery components, and a method and device for calculating shape parameters of a three-dimensional separator structure formed thereby.

[0008] A method for forming a three-dimensional membrane structure according to an embodiment of the present invention may include a step of a membrane forming device determining the size of a domain and a voxel based on design parameters input to a processor for the membrane structure, a step of selecting at least one of a polyethylene membrane weaving algorithm and a polypropylene membrane weaving algorithm based on the components of the membrane structure and whether it is multi-layered, and a step of forming a membrane within the domain using the selected algorithm and the design parameters.

[0009] The step of selecting the above algorithm may include a step of selecting one of the polyethylene membrane weaving algorithm and the polypropylene membrane weaving algorithm based on the components of the membrane structure when the membrane structure is a single layer.

[0010] The step of selecting the algorithm may include a step of selecting the polyethylene separator weaving algorithm and the polypropylene separator weaving algorithm when the separator structure is a multi-layer structure, and the step of forming the separator may include a step of forming a polyethylene separator using the polyethylene separator weaving algorithm, forming a polypropylene separator using the polypropylene separator weaving algorithm, and forming the separator by laminating the polypropylene separator on the polyethylene separator.

[0011] The step of forming the above-described separator may include, when the selected algorithm is the polyethylene separator weaving algorithm, a step of forming a polyethylene separator having a fiber structure shape based on the design parameters, a step of determining whether a formation error of the polyethylene separator is within a preset error range, and a step of reforming the polyethylene separator by changing conditions related to the formation of the polyethylene separator when the formation error is outside the preset error range.

[0012] The step of forming the above-described separator may include, when the selected algorithm is the polypropylene separator weaving algorithm, forming a polypropylene separator based on the design parameters, forming micro-level spherical pores in the polypropylene separator, re-forming the spherical pores by changing conditions related to the formation of the spherical pores until the formation error of the polypropylene separator with the spherical pores formed falls within a preset error range, forming nano-level elongated pores in the polypropylene separator with the elongated pores formed based on the design parameters, and re-forming the elongated pores by changing conditions related to the formation of the elongated pores until the formation error of the polypropylene separator with the elongated pores formed falls within a preset error range.

[0013] A method for forming a three-dimensional membrane structure according to another embodiment of the present invention may further include a step in which the processor determines whether formation of a coating layer is necessary based on the design parameters, and, if formation of the coating layer is determined to be necessary, a step in which a coating layer former generates ceramic particles and a binder within the domain using the design parameters, and laminates the ceramic particles and the binder on the membrane to form a coating layer.

[0014] The step of forming the coating layer may include a step of determining whether the formation error of the ceramic particles is within a preset error range, and a step of regenerating the ceramic particles by changing conditions related to the generation of the ceramic particles when the formation error of the ceramic particles is outside the preset error range.

[0015] The step of forming the coating layer may include a step of determining whether the binder is generated within a pore formed within the coating layer, and if the binder is generated outside the pore, a step of removing the binder generated outside the pore and changing conditions related to the generation of the binder to regenerate the binder, and a step of gradually growing the binder generated within the pore, and if the grown binder is generated outside the pore or the formation error of the grown binder does not fall within a preset error range, a step of removing the volume of the grown binder, changing the growth direction of the binder, and re-growing the binder.

[0016] A method for forming a three-dimensional membrane structure according to another embodiment of the present invention may further include a step in which the processor determines whether lamination simulation is necessary based on machine parameters input for the membrane structure, a step in which the lamination simulator simulates rolling of the membrane using the machine parameters if the lamination simulation is necessary, and a step in which the volume of the membrane after the rolling simulation is corrected based on a difference in volume of the membrane before and after rolling if the deformation error of the rolled membrane is outside a preset error range.

[0017] A method for forming a three-dimensional membrane structure according to another embodiment of the present invention may further include a step in which the processor determines whether swelling simulation is necessary based on mechanical parameters input for the membrane structure, if the swelling simulation is necessary, a step in which a swelling simulator simulates expansion of the coating layer using a swelling factor and the mechanical parameters, and a step in which, if a deformation error of the expanded coating layer is outside a preset error range, a step in which the volume of the coating layer after the expansion simulation is corrected based on a difference in the volume of the coating layer before and after expansion.

[0018] A method for calculating shape parameters of a three-dimensional membrane structure formed by the aforementioned three-dimensional membrane structure forming method according to an embodiment of the present invention may further include a step in which the processor calculates shape parameters for the three-dimensional membrane structure using input physical property parameters for the three-dimensional membrane structure.

[0019] According to an embodiment of the present invention, a three-dimensional membrane structure forming device may include a processor for determining whether a coating layer needs to be formed, whether lamination simulation needs to be performed, and whether swelling simulation needs to be performed based on design parameters or mechanical parameters; a membrane forming device for determining the sizes of domains and voxels based on the design parameters, and forming a membrane within the domain using a polyethylene membrane weaving algorithm or a polypropylene membrane weaving algorithm based on the components of the membrane structure and whether it is multi-layered; a coating layer forming device for generating ceramic particles and a binder within the domain using the design parameters, and laminating the ceramic particles and the binder on the membrane to form a coating layer; a lamination simulator for simulating rolling of the membrane using the mechanical parameters and correcting a deformation error of the rolled membrane to simulate lamination; and a swelling simulator for simulating expansion of the coating layer using a swelling factor and the mechanical parameters and correcting a deformation error of the expanded coating layer to simulate swelling.

[0020] The above membrane former can select one of the polyethylene membrane weaving algorithm and the polypropylene membrane weaving algorithm based on the components of the membrane structure when the membrane structure is a single layer, and form the membrane using the selected algorithm and the design parameters.

[0021] The above membrane former can form a polyethylene membrane using the polyethylene membrane weaving algorithm when the membrane structure is a multi-layer membrane, form a polypropylene membrane using the polypropylene membrane weaving algorithm, and form the membrane structure by laminating the polypropylene membrane on the polyethylene membrane.

[0022] The above polyethylene separator weaving algorithm forms a polyethylene separator having a fiber structure shape based on the design parameters, and when the formation error of the polyethylene separator is outside a preset error range, the conditions related to the formation of the polyethylene separator can be changed to re-form the polyethylene separator.

[0023] The above polypropylene membrane weaving algorithm can form a polypropylene membrane based on the design parameters, form micro-level spherical pores in the polypropylene membrane, and form nano-level elongated pores in the polypropylene membrane in which the spherical pores are formed based on the design parameters.

[0024] The above polypropylene membrane weaving algorithm can re-form the spherical pores by changing conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane in which the spherical pores are formed falls within a preset error range.

[0025] The above polypropylene membrane weaving algorithm can re-form the spherical pores by changing conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane in which the spherical pores are formed falls within a preset error range.

[0026] The above coating layer forming device can regenerate the ceramic particles by changing the conditions related to the generation of the ceramic particles when the formation error of the ceramic particles is outside the preset error range.

[0027] The coating layer former can, when the binder is generated outside of the pores formed within the coating layer, remove the binder generated outside of the pores and change the conditions related to the generation of the binder to regenerate the binder.

[0028] The coating layer former can gradually grow the binder generated within the pores, and if the grown binder is generated outside the pores or the formation error of the grown binder does not fall within a preset error range, the volume of the grown binder can be removed, the growth direction of the binder can be changed, and the binder can be regrowthed.

[0029] The above lamination simulator can correct the volume of the separator after the rolling simulation based on the difference in volume of the separator before and after rolling, if the deformation error of the rolled separator is outside a preset error range.

[0030] The swelling simulator can correct the volume of the coating layer after the swelling simulation based on the difference in volume of the coating layer before and after the swelling, if the deformation error of the expanded coating layer is outside a preset error range.

[0031] In a device for calculating shape parameters of a three-dimensional membrane structure formed by the aforementioned three-dimensional membrane structure forming device according to one embodiment of the present invention, the processor can calculate shape parameters for the three-dimensional membrane structure using input physical property parameters for the three-dimensional membrane structure.

[0032] According to one embodiment of the present invention, it is possible to predict the performance of a battery cell that varies depending on the separator design conditions, and also suggest a direction for improvement accordingly.

[0033] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0034] Figure 1 is a flowchart of a method for forming a three-dimensional membrane structure according to one embodiment of the present invention.

[0035] Figure 2 is a flowchart of a membrane simulation step according to one embodiment of the present invention.

[0036] FIG. 3 and FIG. 4 are flowcharts for explaining an algorithm selection step and a membrane formation step according to one embodiment of the present invention.

[0037] FIG. 5 is an example of a three-dimensional membrane structure formed by a membrane simulation step according to one embodiment of the present invention.

[0038] Figure 6 is a flowchart of a coating layer simulation step according to one embodiment of the present invention.

[0039] Figure 7 is an example of a coating layer formed by a ceramic particle generation step according to one embodiment of the present invention.

[0040] Figure 8 is a flowchart of a binder generation step according to one embodiment of the present invention.

[0041] Figure 9 is an example of a coating layer formed by a binder generation step according to one embodiment of the present invention.

[0042] Figure 10 is a flowchart of a lamination simulation step according to one embodiment of the present invention.

[0043] FIG. 11 is an example of a three-dimensional membrane structure for which lamination simulation was performed by a lamination simulation step according to one embodiment of the present invention.

[0044] Figure 12 is a flowchart of a swelling simulation step according to one embodiment of the present invention.

[0045] FIG. 13 is an example of a three-dimensional membrane structure for which swelling simulation was performed by a swelling simulation step according to one embodiment of the present invention.

[0046] FIG. 14 is a block diagram of a three-dimensional membrane structure forming device and a three-dimensional membrane structure shape parameter calculating device according to one embodiment of the present invention.

[0047] In describing the embodiments disclosed in this specification, detailed descriptions of related known technologies will be omitted if it is determined that such detailed descriptions may obscure the gist of the embodiments disclosed in this specification. In addition, the attached drawings are provided solely to facilitate understanding of the embodiments disclosed in this specification, and the technical concepts disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included within the spirit and technical scope of the present invention.

[0048] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0049] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0050] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0051] The present invention will be described in detail with reference to the attached drawings below.

[0052] FIG. 1 is a flowchart of a method for forming a three-dimensional membrane structure according to an embodiment of the present invention, and FIG. 2 is a flowchart of a membrane simulation step according to an embodiment of the present invention.

[0053] Referring to FIGS. 1 and 2, a method for forming a three-dimensional membrane structure according to an embodiment of the present invention may include a membrane simulation step (S1000). In addition, the membrane simulation step (S1000) may include a domain and voxel size setting step (S1100), an algorithm selection step (S1200), and a membrane formation step (S1300). That is, the method for forming a three-dimensional membrane structure according to the present invention may form a three-dimensional membrane structure by forming a membrane within a domain using the membrane simulation step (S1000).

[0054] According to an embodiment, the method for forming a three-dimensional membrane structure may further include a coating layer simulation step (S2000), a lamination simulation step (S3000), or a swelling simulation step (S4000), depending on the design parameters of the three-dimensional membrane structure formed through the membrane simulation step (S1000). Meanwhile, the swelling simulation step (S4000) relates to a coating layer, which is one of the components of the membrane structure, and may be performed only when a coating layer is formed on the membrane structure through the coating layer simulation step (S2000).

[0055] The membrane simulation step (S1000) may be performed by a membrane former (200), the coating layer simulation step (S2000) may be performed by a coating layer former (300), the lamination simulation step (S3000) may be performed by a lamination simulator (400), and the swelling simulation step (S4000) may be performed by a swelling simulator (500). At this time, each former and simulator may receive parameters necessary for performing each step from the processor (100).

[0056] In addition, the processor (100) can determine whether or not a coating layer formation is necessary, whether or not a lamination simulation is necessary, and whether or not a swelling simulation is necessary based on design parameters. At this time, the processor (100) can generate and transmit a control signal for performing each step of the coating layer simulation step (S2000), the lamination simulation step (S3000), and the swelling simulation step (S4000) according to the determination result.

[0057] That is, the method for forming a three-dimensional membrane structure according to the present invention can analyze design parameters that vary according to each design condition by forming a three-dimensional membrane structure according to each design condition of the membrane structure.

[0058] Hereinafter, each step of the method for forming a three-dimensional membrane structure will be described in more detail with reference to FIGS. 2 to 11.

[0059] In the membrane simulation step (S1000), the membrane former (200) can determine the size of the domain and voxel based on the input design parameters for the 3D membrane structure, and form a membrane within the domain using the design parameters.

[0060] Referring to FIG. 2, the membrane simulation step (S1000) according to one embodiment of the present invention may include a domain and voxel size setting step (S1100), an algorithm selection step (S1200), and a membrane formation step (S1300).

[0061] In the domain and voxel size setting step (S1100), the membrane former (200) can set the domain and voxel sizes based on the design parameters input to the processor (100) for the membrane structure. That is, the membrane former (200) can receive design parameters from the processor (100) and set the domain and voxel sizes based on the received design parameters.

[0062] Here, design parameters refer to variables required to form a three-dimensional membrane structure, and may include, depending on the embodiment, the thickness of the membrane, the porosity, the average pore diameter, the size of the domain and voxel, etc.

[0063] According to an embodiment, the size of the domain set through the domain and voxel size setting step (S1100) may be set based on the thickness of the membrane, and the size of the voxel may be set based on the size of the domain. For example, the length of each side of the domain may be set to a value that is greater than or equal to the thickness of the membrane and less than or equal to three times the thickness of the membrane. In addition, the size of the voxel may be set to 1 / 10 based on the size of the domain. N (Here, N can be set to a natural number greater than or equal to 2). However, the size setting of the domain and voxel is not limited thereto, and, depending on the embodiment, can be set by the user and input as a design parameter through the processor (100).

[0064] FIG. 3 and FIG. 4 are flowcharts for explaining an algorithm selection step and a membrane formation step according to one embodiment of the present invention.

[0065] Referring to FIG. 3, in the algorithm selection step (S1200), the membrane former (200) can select a polyethylene membrane weaving algorithm or a polypropylene membrane weaving algorithm based on whether the membrane structure is multi-layered and its components. In addition, in the membrane formation step (S1300), a membrane can be formed using the selected algorithm.

[0066] Here, whether the membrane structure is multi-layered refers to whether the membrane structure is composed of a single membrane or two or more membranes. Furthermore, the components of the membrane structure refer to the materials that make up the membrane. In this case, the components of the membrane structure may include polyethylene or polypropylene.

[0067] Depending on the embodiment, whether the membrane structure is multi-layered and its components may be included in the design parameters or may be set by the user and input as separate parameters through the processor (100). For example, parameters such as 'single layer' and 'polyethylene' may be input to the membrane former (200) through the processor (100).

[0068] That is, the membrane former (200) can determine what material constitutes the membrane structure and whether the membrane structure is single-layer or multi-layer based on the components and multi-layeredness of the membrane structure received from the processor (100). In addition, the membrane former (200) can select an algorithm used for membrane formation based on the determination result.

[0069] According to an embodiment, the algorithm selection step (S1200) may include a step of determining whether the membrane structure is a multi-layered structure (S1210), and a step of selecting one of a polyethylene membrane weaving algorithm and a polypropylene membrane weaving algorithm (S1222) based on the components of the membrane structure (S1221) if the membrane structure is not a multi-layered structure (i.e., if the membrane structure is a single layer). At this time, in the membrane forming step (S1300), the membrane former (200) may form a polyethylene membrane or a polypropylene membrane within the domain using the selected algorithm and design parameters.

[0070] For example, if the membrane former (200) determines that the membrane structure is a single layer, it can select either a polyethylene membrane weaving algorithm or a polypropylene membrane weaving algorithm depending on the components of the membrane structure, and form the membrane using the selected algorithm.

[0071] According to an embodiment, the algorithm selection step (S1200) may include a step of determining whether the membrane structure is multi-layered (S1210), a step of selecting a polyethylene membrane weaving algorithm (S1231) and a step of selecting the polypropylene membrane weaving algorithm if the membrane structure is multi-layered (S1232). At this time, in the membrane forming step (S1300), the membrane former (200) may form a polyethylene membrane using the polyethylene membrane weaving algorithm (S1311), form a polypropylene membrane using the polypropylene membrane weaving algorithm (S1312), and form a membrane by laminating the polypropylene membrane on the polyethylene membrane (S1313).

[0072] For example, if the membrane former (200) determines that the membrane structure is multi-layered, the membrane former can first form a polyethylene membrane using a polyethylene membrane weaving algorithm, then form a polypropylene membrane using a polypropylene membrane weaving algorithm, and then form a polypropylene membrane by stacking the polypropylene membrane on the polyethylene membrane.

[0073] That is, the membrane former (200) selects either a polyethylene membrane weaving algorithm or a polypropylene membrane weaving algorithm when the membrane structure is a single layer, whereas it can select both a polyethylene membrane weaving algorithm and a polypropylene membrane weaving algorithm when the membrane structure is a multilayer.

[0074] Referring to FIG. 4, in the membrane forming step (S1300) according to one embodiment of the present invention, the process of forming the membrane differs depending on the algorithm selected in the algorithm selection step (S1200).

[0075] For example, if a polyethylene separator weaving algorithm is selected in the algorithm selection step (S1200), the separator forming step (S1300) may include a step (S1331) of forming a polyethylene separator having a fiber structure shape based on design parameters, a step (S1332) of determining whether the formation error of the polyethylene separator is within a preset error range, and a step (S1333) of reforming the polyethylene separator by changing conditions related to the formation of the polyethylene separator if the formation error is outside the preset error range.

[0076] That is, when a polyethylene membrane weaving algorithm is selected, a polyethylene membrane can be repeatedly formed while changing the conditions related to the formation of the polyethylene membrane until the formation error of the polyethylene membrane falls within a preset range. Here, the conditions related to the formation of the polyethylene membrane can be changed by changing the value of the random seed.

[0077] According to an embodiment, whether the formation error of the polyethylene separator falls within a preset error range may be determined to be outside the preset error range if the formation error value of the polyethylene separator is greater than a certain number. In this case, the certain number may be set by the user and input through the processor (100).

[0078] According to an embodiment, the formation error of the polyethylene separator may be a value calculated by dividing the difference between the porosity of the separator input as a design parameter and the porosity of the polyethylene separator formed within the domain by the porosity of the input separator.

[0079] On the other hand, when a polypropylene membrane weaving algorithm is selected in the algorithm selection step (S1200), the membrane forming step (S1300) includes: forming a polypropylene membrane based on design parameters (S1341), forming micro-level spherical pores in the polypropylene membrane (S1342), re-forming the spherical pores by changing conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane with the spherical pores formed falls within a preset error range (S1343), re-forming the spherical pores by changing conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane with the spherical pores formed falls within a preset error range (S1344), forming nano-level elongated pores in the polypropylene membrane with the elongated pores formed based on design parameters (S1345), and re-forming the elongated pores by changing conditions related to the formation of the elongated pores until the formation error of the polypropylene membrane with the elongated pores formed falls within a preset error range (S1346). It may include step (S1347).

[0080] That is, when a polypropylene membrane weaving algorithm is selected, the spherical pores can be repeatedly formed while changing the conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane with the spherical pores formed falls within a preset error range. In addition, after the formation of the spherical pores is completed, the elongated pores can be repeatedly formed while changing the conditions related to the formation of the elongated pores until the formation error of the polypropylene membrane with the elongated pores formed falls within a preset range. At this time, the polypropylene membrane with the elongated pores formed means that both the micro-level elongated pores and the nano-level elongated pores are formed in the polypropylene membrane. Here, the conditions related to the formation of the spherical pores and the elongated pores can be changed by changing the value of the random seed.

[0081] According to an embodiment, whether the formation error of a polypropylene separator having a spherical pore formed therein and a polypropylene separator having a spherical pore formed therein are within a preset error range may be determined to be outside the preset error range if the formation error value of each polypropylene separator is greater than a certain number. In this case, the certain number may be set by a user and input through the processor (100).

[0082] According to an embodiment, the formation error of each polypropylene separator may be a value calculated by dividing the difference between the porosity of the separator input as a design parameter and the porosity of the polypropylene separator formed within the domain by the porosity of the input separator.

[0083] FIG. 5 is an example of a three-dimensional membrane structure formed by a membrane simulation step according to one embodiment of the present invention.

[0084] Fig. 5(a) is an example of a polyethylene separator, and Fig. 5(b) is an example of a polypropylene separator. Referring to Figs. 5(a) and (b), it can be seen that the three-dimensional separator structure formed by the separator simulation step (S1000) according to one embodiment of the present invention has pores of different shapes depending on the components (i.e., materials) of the separator structure.

[0085] Figure 6 is a flowchart of a coating layer simulation step according to one embodiment of the present invention.

[0086] Referring to FIGS. 1 and 6, the coating layer simulation step (S2000) according to one embodiment of the present invention may include a step of determining whether a coating layer is necessary (S2100) and a step of forming a coating layer (S2200).

[0087] In the step of determining whether a coating layer is necessary (S2100), the processor (100) can determine whether formation of a coating layer is necessary based on design parameters. At this time, if the processor (100) determines that formation of a coating layer is necessary, the processor (100) can generate a control signal for forming a coating layer and transmit it to the coating layer forming device (300).

[0088] According to an embodiment, the processor (100) may determine that formation of a coating layer is necessary when the design parameters include parameters for forming a coating layer.

[0089] Additionally, depending on the embodiment, the processor (100) may determine whether or not it is necessary to form a coating layer based on whether a signal including a command to form a coating layer has been received from an external source. If the coating layer forming step is performed according to an external command, parameters for forming the coating layer may be provided to the processor (100) from the external source.

[0090] According to an embodiment, the design parameters may include variables for forming a coating layer. Here, the variables for forming a coating layer may include a loading level of the coating layer, material content and density, average diameter and sphericity of ceramic particles, and a QBR (Quantified Binder Ratio) of a binder.

[0091] Depending on the embodiment, the number of design parameters used may increase when applying multiple types of ceramic particles or when the design of the inactive material is changed. For example, when applying one type of ceramic particle, one design parameter may be used, and when applying two types of ceramic particles, two design parameters may be used. In this case, each design parameter may include the loading level of the ceramic particles, the material content and density of the membrane structure, the average diameter and sphericity of the ceramic particles, the QBR of the binder, etc.

[0092] In the coating layer forming step (S2200), the coating layer forming device (300) can receive a control signal for forming a coating layer from the processor (100), and can use design parameters to create ceramic particles and a binder within a domain, and laminate the ceramic particles and the binder on a separator to form a coating layer.

[0093] According to an embodiment, the coating layer forming step (S2200) may include a ceramic particle generating step (S2210), a binder generating step (S2220), and a ceramic particle and binder laminating step (S2230).

[0094] In the ceramic particle generation step (S2210), the coating layer former (300) can generate ceramic particles within the domain (S2211). Here, the ceramic particles can be generated using RSA (Random Sequential Absorption) or DEM (Discrete Element Method).

[0095] According to an embodiment, the ceramic particle generation step (S2210) may include a step of determining whether the formation error of the ceramic particles is within a preset error range (S2212), and, if the formation error of the ceramic particles is outside the preset error range, a step of changing conditions related to the formation of the ceramic particles to regenerate the ceramic particles (S2213). That is, in the ceramic particle generation step (S2210), the coating layer former (300) may repeatedly form ceramic particles while changing conditions related to the formation of the ceramic particles until the formation error of the ceramic particles falls within a preset range. Here, the conditions related to the formation of the ceramic particles may be changed by changing the value of the random seed.

[0096] According to an embodiment, the determination (S2212) as to whether the formation error of the ceramic particles is within a preset error range may be made that the formation error value of the ceramic particles is outside the preset error range if the value is greater than a certain number. In this case, the certain number may be set by the user and input through the processor (100).

[0097] According to an embodiment, the formation error of the ceramic particles may be a value calculated by dividing the difference between the loading level of the ceramic particles input as a design parameter and the loading level of the ceramic particles formed within the domain by the loading level of the input ceramic particles.

[0098] The binder generation step (S2220) will be described in detail below with reference to FIG. 8.

[0099] In the ceramic particle and binder lamination step (S2230), the coating layer forming device (300) can form a coating layer by laminating the ceramic particles and binder generated through the above-described ceramic particle generating step (S2210) and binder generating step (S2220) onto the separator.

[0100] Figure 7 is an example of a coating layer formed by a ceramic particle generation step according to one embodiment of the present invention.

[0101] As shown in Fig. 7, the coating layer generated through the ceramic particle generation step (S2210) according to one embodiment of the present invention has an average diameter of ceramic particles of 20 The first particle (71) of m, with an average diameter of 15 A second particle (72) having a diameter of m and an average diameter of 10 A third particle (73) having m is generated. In addition, the sphericity of the particles generated in the coating layer is different from each other.

[0102] That is, referring to FIG. 7, it can be seen that according to the ceramic particle generation step (S2210) according to one embodiment of the present invention, it is possible to generate ceramic particles having different diameter sizes and sphericity.

[0103] Figures 7(a) to (c) show the loading level of ceramic particles as 0.25 mg / cm, respectively. 2 , 0.5mg / cm 2 , 0.75mg / cm 2 This is an example of a coating layer formed when the ceramic particle generating step (S2210) according to one embodiment of the present invention is performed. Through this, it can be confirmed that a coating layer with controlled loading level of ceramic particles can be simulated.

[0104] Figure 8 is a flowchart of a binder generation step according to one embodiment of the present invention.

[0105] Referring to FIG. 8, in the binder generation step (S2220), the coating layer former (300) can generate a binder within the pores formed within the coating layer using design parameters and grow the binder generated within the pores. Here, the binder can be generated using an RSA and particle growth algorithm based on the QBR value of the binder.

[0106] According to an embodiment, the binder generation step (S2220) may include a step of regenerating the binder (S2221 to S2224) and a step of regrowth of the binder (S2225 to S2229).

[0107] In the binder regeneration step (S2221 to S2224), the coating layer former (300) generates a binder within a domain (S2221), determines whether the binder is generated within a pore formed within the coating layer (S2222), and if the binder is generated outside the pore, removes the binder generated outside the pore (S2223), and changes the conditions related to binder generation to regenerate the binder (S2224). That is, the binder regeneration step (S2221 to S2224) can be repeatedly performed until the binder generated in the domain is included within the pore. Here, the conditions related to binder generation can be changed by changing the numerical value of the random seed related to binder generation.

[0108] The step of regrowing the binder (S2225 to S2229) may include a step of gradually growing the binder generated within the pore (S2225), removing the volume of the grown binder (S2228) when the grown binder is generated outside the pore (S2226) or the formation error of the grown binder does not fall within a preset error range (S2227), and changing the growth direction of the binder to re-grow the binder (S2229). That is, the step of regrowing the binder (S2225 to S2229) may be repeatedly performed until the entire volume of the grown binder is contained within the pore and the formation error of the binder falls within the preset error range. Here, the binder growth direction may be changed by changing the numerical value of the random seed related to the growth of the binder.

[0109] In some embodiments, the determination of whether the formation error of the binder falls within a preset error range may be made by determining that the binder's formation error value is outside the preset error range if it is greater than a certain number. In this case, the certain number may be set by the user and input through the processor (100).

[0110] In some embodiments, the formation error of the binder may be a value calculated by dividing the difference between the loading level of the binder input as a design parameter and the loading level of the binder particles formed within the domain by the loading level of the input binder.

[0111] Meanwhile, it would be desirable for the binder to be grown stepwise so as not to encroach on the ceramic particle domain. This is to prevent overlap between the ceramic particles and the binder generated within the domain. Here, the ceramic particle domain refers to the region formed within the domain for voxels assigned properties to ceramic particles. Furthermore, growing stepwise so as not to encroach on the ceramic particle domain means that the binder is grown to voxels located around voxels assigned properties to ceramic particles.

[0112] Figure 9 is an example of a coating layer formed by a binder generation step according to one embodiment of the present invention.

[0113] Figures 9(a) to (d) are examples of coating layers having a volume fraction (VF) of 0%, 5%, 10%, and 15%, respectively. That is, referring to Figure 9, it can be seen that according to the binder generation step (S2220) according to one embodiment of the present invention, the content of the binder generated in the coating layer can be controlled.

[0114] Figure 10 is a flowchart of a lamination simulation step according to one embodiment of the present invention.

[0115] Referring to FIGS. 1 and 10, the lamination simulation step (S3000) according to one embodiment of the present invention may include a step of determining whether lamination is necessary (S3100), a membrane rolling simulation step (S3200), and a membrane volume correction step (S3300).

[0116] In the step of determining whether lamination is necessary (S3100), the processor (100) can determine whether lamination simulation is necessary based on machine parameters. At this time, if the processor (100) determines that lamination simulation is necessary, it can generate a control signal for lamination simulation and transmit it to the lamination simulator (400).

[0117] In some embodiments, the processor (100) may determine that lamination simulation is necessary when machine parameters are input.

[0118] Depending on the embodiment, the mechanical parameters may include variables necessary to perform the lamination simulation. For example, the mechanical parameters may include the thickness, Young's modulus, Poisson's ratio, yield stress, hardening modulus, or failure stress of the separator after rolling.

[0119] In addition, according to an embodiment, the processor (100) may determine whether lamination simulation is necessary based on whether a signal including a command to perform lamination simulation is received from the outside. When the membrane rolling simulation step (S3200) and the membrane volume correction step (S3300) are performed according to an external command, parameters for lamination simulation may be provided to the processor (100) from the outside. In the membrane rolling simulation step (S3200), when the lamination simulator (400) determines that lamination simulation is necessary, it receives a control signal from the processor (100) and simulates membrane rolling using machine parameters. That is, the lamination simulator (400) can simulate the rolling of a membrane for a three-dimensional membrane structure in which membrane formation is completed or a three-dimensional membrane structure in which membrane and coating layer formation are completed. According to an embodiment, in the membrane rolling simulation step (S3200), the lamination simulator (400) calculates mechanical parameters by reflecting them in a bilinear hardening model and a damage model, and connects a strain-displacement equation and an equilibrium equation to simulate the displacement and stress of each material of components included in the three-dimensional membrane structure according to the strain, thereby simulating the compression of the membrane.

[0120] In the membrane volume correction step (S3300), if the deformation error of the rolled membrane is outside the preset error range, the volume of the membrane after the rolling simulation can be corrected based on the volume difference of the membrane before and after rolling. That is, the membrane volume correction step (S3300) can be repeatedly performed until the deformation error of the membrane falls within the preset error range.

[0121] According to an embodiment, the membrane volume correction step (S3300) may include a step (S3310) of determining whether the deformation error of the membrane is within a preset error range and a step (S3320) of correcting the structural deformation error of the membrane until the deformation error falls within the preset error range.

[0122] Here, the deformation error of the separator can be determined based on the volume of the separator. For example, the deformation error of the separator can be the difference between the volume of the separator before rolling and the volume after rolling divided by the volume before rolling.

[0123] In some embodiments, the determination as to whether the deformation error of the separator falls within a preset error range may be made by determining that the deformation error value of the separator is outside the preset error range if the value is greater than a certain number. In this case, the certain number may be set by the user and input through the processor (100).

[0124] In the step (S3320) of correcting the structural deformation error of the separator, if the deformation error of the separator is outside the preset error range, the lamination simulator (400) can change the allocation group of voxels located on the surface of the separator. For example, if the volume of the separator is excessively reduced after rolling and the deformation error is outside the preset error range, the lamination simulator (400) can change the attribute assigned to the voxels located on the surface of the separator to the separator, thereby increasing the volume of the separator after rolling and reducing the deformation error.

[0125] In some embodiments, when there are multiple voxels located on the surface of the membrane, the allocation groups of the multiple voxels can be changed one by one until the deformation error falls within a preset error range.

[0126] That is, the present invention can compensate for the structural deformation of a three-dimensional membrane structure caused by rolling simulation by increasing or decreasing the number of voxels corresponding to the membrane.

[0127] FIG. 11 is an example of a three-dimensional membrane structure for which lamination simulation was performed by a lamination simulation step according to one embodiment of the present invention.

[0128] As illustrated in FIG. 11, a lamination simulation according to one embodiment of the present invention can form a three-dimensional membrane structure with varying degrees of rolling. FIG. 11 illustrates an example of a process for rolling an arbitrary membrane structure to a thickness of 74% of its original thickness.

[0129] That is, by using a three-dimensional membrane structure formed through a lamination simulation step (S3000) according to one embodiment of the present invention, it is possible to confirm the change in the characteristics of the three-dimensional membrane structure before and after the lamination simulation step (S3000), as shown in [Table 1] below.

[0130] Lamination simulation Pre-lamination simulation Post-lamination membrane thickness ( m)14.9611.1 Membrane porosity (%)43.0128.48 Coating layer porosity (%)46.1733.54 Pore D50 size in the membrane (nm)400300 Pore D50 size in the coating layer (nm)500400 Membrane curvature1.7332.684 Coating layer curvature2.4754.599

[0131] FIG. 12 is a flowchart for explaining a swelling simulation step according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 12, the swelling simulation step (S4000) according to an embodiment of the present invention may include a swelling necessity determination step (S4100), a coating layer expansion simulation step (S4200), and a coating layer volume correction step (S4300).

[0132] In the swelling necessity determination step (S4100), the processor (100) can determine whether swelling simulation is necessary based on machine parameters. At this time, if the processor (100) determines that swelling simulation is necessary, it can generate a control signal for swelling simulation and transmit it to the swelling simulator (500).

[0133] According to an embodiment, the processor (100) may determine that swelling simulation is necessary when machine parameters are input. In this case, the machine parameters may include variables necessary for performing swelling simulation.

[0134] Additionally, depending on the embodiment, the processor (100) may determine whether swelling simulation is necessary based on whether a signal including a command to perform swelling simulation is received from an external source. If the coating layer expansion simulation step (S4200) and the coating layer volume correction step (S4300) are performed according to an external command, parameters for swelling simulation may be provided to the processor (100) from the external source.

[0135] In the coating layer expansion simulation step (S4200), if the swelling simulator (500) determines that swelling simulation is necessary, it receives a control signal from the processor (100) and simulates the expansion of the coating layer using the swelling factor and machine parameters. That is, the swelling simulator (500) can simulate the expansion of the coating layer for a three-dimensional membrane structure in which the membrane and coating layer have been completely formed.

[0136] According to an embodiment, in the coating layer expansion simulation step (S4200), the coating layer simulator (500) calculates swelling factors and mechanical parameters by reflecting them in a bilinear hardening model and a damage model, and connects a strain-displacement equation and an equilibrium equation to simulate displacement and stress of materials of components included in a three-dimensional membrane structure according to strain, thereby simulating the expansion of the coating layer.

[0137] In the coating layer volume correction step (S4300), if the deformation error of the expanded coating layer simulated by the swelling simulator (500) is outside the preset error range, the volume of the coating layer after the expansion simulation can be corrected based on the difference in the volume of the coating layer before and after expansion. That is, the coating layer volume correction step can be repeatedly performed until the deformation error of the coating layer falls within the preset error range.

[0138] According to an embodiment, the coating layer volume correction step (S4300) may include a step (S4310) of determining whether the deformation error of the coating layer is within a preset error range and a step (S4320) of correcting the structural deformation error of the coating layer until the deformation error falls within the preset error range.

[0139] Here, the deformation error of the coating layer can be determined based on the volume of the coating layer. For example, the deformation error of the coating layer can be a value obtained by dividing the difference between the volume of the coating layer before expansion and the volume after expansion by the volume before expansion.

[0140] In some embodiments, the determination as to whether the deformation error of the coating layer falls within a preset error range may be made by determining that the deformation error value of the coating layer is outside the preset error range if the value is greater than a certain number. In this case, the certain number may be set by the user and input through the processor (100).

[0141] In the step (S4320) of correcting the structural deformation error of the coating layer, if the deformation error of the coating layer is outside the preset error range, the swelling simulator (500) can change the allocation group of voxels located on the surface of the coating layer. For example, if the volume of the coating layer increases excessively after expansion and the deformation error is outside the preset error range, the swelling simulator (500) can reduce the deformation error by reducing the volume of the coating layer after expansion by changing the attribute assigned to the voxels located on the surface of the coating layer to a membrane or a void. That is, the present invention can correct the structural deformation of a three-dimensional membrane structure caused by expansion simulation by increasing or decreasing the number of voxels corresponding to the coating layer.

[0142] Fig. 13(a) is an example of a three-dimensional membrane structure before swelling simulation, and Fig. 13(b) is the three-dimensional membrane structure of Fig. 13(a) after swelling simulation.

[0143] That is, by using a three-dimensional membrane structure formed through a swelling simulation step (S4000) according to one embodiment of the present invention, it is possible to confirm the change in the characteristics of the three-dimensional membrane structure before and after the swelling simulation, as shown in [Table 2] below.

[0144] Before swelling simulation After swelling simulation Coating layer thickness ( m)3.223.52Porosity of coating layer (%)49.5263.82Pore D50 size in coating layer (nm)500600Coating layer curvature5.8782.138

[0145] A method for calculating a normal parameter of a three-dimensional membrane structure according to an embodiment of the present invention may further include a shape parameter calculation step in the three-dimensional membrane structure forming method described above. In the shape parameter calculation step, a processor (100) may receive a property parameter for a three-dimensional membrane structure, and may calculate a shape parameter for a three-dimensional membrane structure formed by the three-dimensional membrane structure forming method described above using the input property parameter.

[0146] Here, the material property parameters are variables required to calculate the shape parameters, and the processor (100) may receive the material property parameters from the outside through a user terminal or the like, or the processor (100) may obtain them from a three-dimensional membrane structure formed by the method described above.

[0147] Additionally, the shape parameters may include the porosity, pore radius, and ion tortuosity of the membrane, and the porosity, pore radius, and ion tortuosity of the coating layer.

[0148] At this time, conventionally known techniques can be used to derive shape parameters from physical properties. For example, pore radius can be derived using the Watershed algorithm, porosity can be derived using Voxel Statistical Analysis, and ion tortuosity can be derived using Ohn's law partial differential equation calculations.

[0149] Meanwhile, the above-described method can be written as a program that can be executed on a computer, and can be implemented on a general-purpose digital computer that operates the program using a computer-readable recording medium. The computer-readable recording medium may include a storage medium such as a magnetic storage medium such as a ROM, RAM, USB, floppy disk, or hard disk, or an optical readable medium such as a CD-ROM or DVD.

[0150] FIG. 14 is a block diagram of a three-dimensional membrane structure forming device and a three-dimensional membrane structure shape parameter calculating device according to one embodiment of the present invention.

[0151] Referring to FIG. 14, a three-dimensional membrane structure forming device (10) according to one embodiment of the present invention may include a processor (100), a membrane forming device (200), a coating layer forming device (300), a lamination simulator (400), and a swelling simulator (500).

[0152] The processor (100) can determine whether a coating layer needs to be formed, whether lamination simulation needs to be performed, and whether swelling simulation needs to be performed based on design parameters or machine parameters.

[0153] According to an embodiment, the processor (100) may further include a communication unit (110) and a memory (120).

[0154] The communication unit (110) is a component required for the processor (100) to communicate with a membrane former, a coating layer former, a lamination simulator, a swelling simulator, or an external upper controller. Any device that supports communication between two different devices may be used as the communication unit (110).

[0155] The memory (120) is not particularly limited in type as long as it is a storage medium capable of recording, erasing, and retaining information. Depending on the embodiment, the memory (120) may be RAM, ROM, or a register. In addition, the memory (120) may be electrically connected to the processor (100) via, for example, a data bus so that it can be accessed by the processor (100).

[0156] The membrane former (200) can determine the size of the domain and voxel based on design parameters, and form a membrane within the domain using a polyethylene membrane weaving algorithm or a polypropylene membrane weaving algorithm based on the components of the membrane structure and whether it is multi-layered.

[0157] According to an embodiment, the membrane former (200) may select one of a polyethylene membrane weaving algorithm and a polypropylene membrane weaving algorithm based on the components of the membrane structure when the membrane structure is a single layer, and form a membrane using the selected algorithm and design parameters.

[0158] According to an embodiment, the membrane former (200) may form a polyethylene membrane using a polyethylene membrane weaving algorithm when the membrane structure is a multi-layer membrane, form a polypropylene membrane using a polypropylene membrane weaving algorithm, and form a membrane structure by laminating a polypropylene membrane on a polyethylene membrane.

[0159] Here, the polyethylene separator weaving algorithm forms a polyethylene separator having a fiber structure shape based on design parameters, and when the formation error of the polyethylene separator is outside a preset error range, the conditions related to the formation of the polyethylene separator can be changed to re-form the polyethylene separator.

[0160] The polypropylene membrane weaving algorithm can form a polypropylene membrane based on design parameters, form micro-level spherical pores in the polypropylene membrane, and form nano-level elongated pores in the polypropylene membrane in which the spherical pores are formed based on the design parameters.

[0161] In addition, the polypropylene membrane weaving algorithm can re-form the spherical pores by changing the conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane in which the spherical pores are formed falls within a preset error range. In other words, the polypropylene membrane weaving algorithm can re-form the spherical pores by changing the conditions related to the formation of the spherical pores until the formation error of the polypropylene membrane in which the spherical pores are formed falls within a preset error range.

[0162] The coating layer former (300) can form a coating layer by generating ceramic particles and a binder within a domain using design parameters and laminating the ceramic particles and binder on a separator.

[0163] According to an embodiment, the coating layer former (300) can regenerate ceramic particles by changing conditions related to the generation of ceramic particles when the formation error of the ceramic particles is outside a preset error range.

[0164] According to an embodiment, the coating layer former (300) can remove the binder generated outside the pores when the binder is generated outside the pores formed within the coating layer, and regenerate the binder by changing the conditions related to binder generation.

[0165] According to an embodiment, the coating layer former (300) may gradually grow the binder generated within the pores, and if the grown binder is generated outside the pores or the formation error of the grown binder does not fall within a preset error range, the volume of the grown binder may be removed, the growth direction of the binder may be changed, and the binder may be regrowthed.

[0166] The lamination simulator (400) can simulate rolling of a separator using machine parameters and simulate lamination by correcting the deformation error of the rolled separator.

[0167] Here, the lamination simulator (400) can correct the volume of the membrane after rolling simulation based on the difference in volume of the membrane before and after rolling when the deformation error of the rolled membrane is outside the preset error range.

[0168] The swelling simulator (500) can simulate swelling of a coating layer using swelling factors and mechanical parameters, and correct deformation errors of the expanded coating layer to simulate swelling.

[0169] Here, the swelling simulator (500) can correct the volume of the coating layer after expansion simulation based on the difference in volume of the coating layer before and after expansion when the deformation error of the expanded coating layer is outside the preset error range.

[0170] In the shape parameter calculation device (10) of a three-dimensional membrane structure formed by the aforementioned three-dimensional membrane structure forming device (10) according to one embodiment of the present invention, the processor (100) can calculate the shape parameter for the three-dimensional membrane structure using the physical property parameters input for the three-dimensional membrane structure.

[0171] A three-dimensional membrane structure shape parameter calculation device (10) according to one embodiment of the present invention is a device (10) for calculating shape parameters of a three-dimensional membrane structure formed by the three-dimensional membrane structure forming device (10) described above, and may include the same configuration as the three-dimensional membrane structure forming device (10) described above, and a processor (100) of the three-dimensional membrane structure shape parameter calculation device (10) may receive property parameters for a three-dimensional membrane and calculate shape parameters for the three-dimensional membrane structure using the property parameters.

[0172] The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. A step in which a membrane former determines the size of a domain and voxel based on design parameters input to the processor for a membrane structure; A step of selecting at least one of a polyethylene membrane weaving algorithm and a polypropylene membrane weaving algorithm based on the components of the membrane structure and whether it is multi-layered; and A step of forming a separation membrane within the domain using the selected algorithm and the design parameters, Method for forming a three-dimensional membrane structure.

2. In paragraph 1, The steps for selecting the above algorithm are: In the case where the membrane structure is a single layer, a step of selecting one of the polyethylene membrane weaving algorithm and the polypropylene membrane weaving algorithm based on the components of the membrane structure is included. Method for forming a three-dimensional membrane structure.

3. In paragraph 1, The steps for selecting the above algorithm are: In the case where the above membrane structure is a multi-layer structure, a step of selecting the polyethylene membrane weaving algorithm and the polypropylene membrane weaving algorithm is included. The step of forming the above separation membrane is: A step of forming a polyethylene separator using the polyethylene separator weaving algorithm, forming a polypropylene separator using the polypropylene separator weaving algorithm, and forming the separator by laminating the polypropylene separator on the polyethylene separator, Method for forming a three-dimensional membrane structure.

4. In paragraph 1, The step of forming the above separation membrane is: If the selected algorithm is the polyethylene membrane weaving algorithm, A step of forming a polyethylene separator having a fiber structure shape based on the above design parameters; A step of determining whether the formation error of the polyethylene separator falls within a preset error range; and In case the above formation error is outside the preset error range, a step of reforming the polyethylene separator by changing the conditions related to the formation of the polyethylene separator is included. Method for forming a three-dimensional membrane structure.

5. In paragraph 1, The step of forming the above separation membrane is: If the selected algorithm is the polypropylene membrane weaving algorithm, A step of forming a polypropylene separator based on the above design parameters and forming micro-level spherical pores in the polypropylene separator; A step of reforming the spherical pores by changing conditions related to the formation of the spherical pores until the formation error of the polypropylene separator in which the spherical pores are formed falls within a preset error range; A step of forming nano-level spherical pores in a polypropylene separator having spherical pores formed therein based on the above design parameters; and A method comprising: forming a polypropylene membrane having a spherical pore formed therein; and forming the spherical pore by changing conditions related to the formation of the spherical pore until the formation error of the polypropylene membrane having the spherical pore formed therein falls within a preset error range. Method for forming a three-dimensional membrane structure.

6. In paragraph 1, A step in which the processor determines whether formation of a coating layer is necessary based on the design parameters; and If it is determined that the formation of the coating layer is necessary, the coating layer former further includes a step of forming ceramic particles and a binder within the domain using the design parameters, and laminating the ceramic particles and the binder on the separator to form the coating layer. Method for forming a three-dimensional membrane structure.

7. In paragraph 6, The step of forming the above coating layer is: A step of determining whether the formation error of the ceramic particles falls within a preset error range; and Including a step of regenerating the ceramic particles by changing the conditions related to the generation of the ceramic particles when the formation error of the ceramic particles is outside the preset error range. Method for forming a three-dimensional membrane structure.

8. In paragraph 6, The step of forming the above coating layer is: A step of determining whether the binder is generated within a pore formed within the coating layer, and if the binder is generated outside the pore, removing the binder generated outside the pore, and changing conditions related to the generation of the binder to regenerate the binder; and A step of gradually growing the binder generated within the pore, and if the grown binder is generated outside the pore or the formation error of the grown binder does not fall within a preset error range, removing the volume of the grown binder, changing the growth direction of the binder, and re-growing the binder, Method for forming a three-dimensional membrane structure.

9. In paragraph 1, A step in which the processor determines whether lamination simulation is necessary based on the machine parameters input for the separation membrane structure; If the above lamination simulation is required, a step of the lamination simulator simulating rolling of the separator using the above machine parameters; and If the deformation error of the above-mentioned rolled separator is outside the preset error range, the method further includes a step of correcting the volume of the separator after the rolling simulation based on the volume difference of the separator before and after rolling. Method for forming a three-dimensional membrane structure.

10. In paragraph 1, A step in which the processor determines whether swelling simulation is necessary based on the mechanical parameters input for the membrane structure; If the above swelling simulation is required, a step of the swelling simulator simulating the expansion of the coating layer using the swelling factor and the machine parameters; and If the deformation error of the expanded coating layer is outside the preset error range, the method further includes a step of correcting the volume of the coating layer after the expansion simulation based on the difference in volume of the coating layer before and after expansion. Method for forming a three-dimensional membrane structure.

11. A method for calculating shape parameters of a three-dimensional membrane structure formed by the method of any one of claims 1 to 10, The processor further includes a step of calculating shape parameters for the three-dimensional membrane structure using the input material properties parameters for the three-dimensional membrane structure. Method for calculating shape parameters of a three-dimensional membrane structure.

12. A processor that determines whether a coating layer needs to be formed, whether lamination simulation needs to be performed, and whether swelling simulation needs to be performed based on design parameters and machine parameters; A membrane former that determines the size of the domain and voxel based on the above design parameters, and forms a membrane within the domain using a polyethylene membrane weaving algorithm or a polypropylene membrane weaving algorithm based on the components of the membrane structure and whether it is multi-layered; A coating layer forming device that forms ceramic particles and a binder within the domain using the above design parameters and laminates the ceramic particles and the binder on the separator to form a coating layer; A lamination simulator that simulates rolling of the separator using the above machine parameters and corrects the deformation error of the rolled separator to simulate lamination; and A swelling simulator that simulates swelling of the coating layer using a swelling factor and the mechanical parameters and corrects a deformation error of the expanded coating layer to simulate swelling, A device for forming a three-dimensional membrane structure.

13. In paragraph 12, The above membrane former is, If the above membrane structure is a single layer, one of the polyethylene membrane weaving algorithm and the polypropylene membrane weaving algorithm is selected based on the components of the above membrane structure, Forming the separation membrane using the above-mentioned selected algorithm and the above-mentioned design parameters, A device for forming a three-dimensional membrane structure.

14. In paragraph 12, The above membrane former is, If the above membrane structure is multi-layered, A polyethylene separator is formed using the above polyethylene separator weaving algorithm, a polypropylene separator is formed using the above polypropylene separator weaving algorithm, and the polypropylene separator is laminated on the polyethylene separator to form the separator structure. A device for forming a three-dimensional membrane structure.

15. In paragraph 12, The above polyethylene membrane weaving algorithm is, Based on the above design parameters, a polyethylene separator having a fiber structure shape is formed, and when the formation error of the polyethylene separator is outside a preset error range, the conditions related to the formation of the polyethylene separator are changed to re-form the polyethylene separator. A device for forming a three-dimensional membrane structure.

16. In paragraph 12, The above polypropylene membrane weaving algorithm is, Based on the above design parameters, a polypropylene separator is formed, and micro-level spherical pores are formed in the polypropylene separator. Based on the above design parameters, nano-level spherical pores are formed in the polypropylene separator in which the spherical pores are formed. A device for forming a three-dimensional membrane structure.

17. In paragraph 16, The above polypropylene membrane weaving algorithm is, The conditions related to the formation of the spherical pores are changed until the formation error of the polypropylene separator in which the spherical pores are formed falls within a preset error range, thereby re-forming the spherical pores. 3D membrane structure forming device.

18. In paragraph 16, The above polypropylene membrane weaving algorithm is, The conditions related to the formation of the spherical pores are changed until the formation error of the polypropylene separator in which the spherical pores are formed falls within a preset error range, thereby re-forming the spherical pores. 3D membrane structure forming device.

19. In paragraph 12, The above coating layer forming machine, If the formation error of the ceramic particles is outside the preset error range, the conditions related to the creation of the ceramic particles are changed to regenerate the ceramic particles. A device for forming a three-dimensional membrane structure.

20. In paragraph 12, The above coating layer forming machine, If the binder is generated outside of the pores formed within the coating layer, the binder generated outside of the pores is removed, and the conditions related to the generation of the binder are changed to regenerate the binder. A device for forming a three-dimensional membrane structure.

21. In paragraph 12, The above coating layer forming machine, The binder generated within the above-mentioned pores is grown stepwise, and when the grown binder is generated outside the pores or the formation error of the grown binder does not fall within a preset error range, the volume of the grown binder is removed, the growth direction of the binder is changed, and the binder is regrowth. A device for forming a three-dimensional membrane structure.

22. In paragraph 12, The above lamination simulator, If the deformation error of the above-mentioned rolled separator is outside the preset error range, the volume of the separator is corrected after the rolling simulation based on the volume difference of the separator before and after rolling. A device for forming a three-dimensional membrane structure.

23. In paragraph 12, The above swelling simulator, If the deformation error of the expanded coating layer is outside the preset error range, the volume of the coating layer after the expansion simulation is corrected based on the difference in volume of the coating layer before and after expansion. A device for forming a three-dimensional membrane structure.

24. In a device for calculating shape parameters of a three-dimensional membrane structure formed by a device according to any one of claims 12 to 23, The above processor, Using the input physical property parameters for the above 3D membrane structure, shape parameters for the above 3D membrane structure are calculated. 3D membrane structure shape parameter calculation device.

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