Method for determining contact characteristic parameters of a graphite material and related device

Abstract

The application discloses a method for determining contact characteristic parameters of a graphite material and related devices, and comprises the following steps: obtaining contact data of a plurality of graphite particles in the graphite material; generating a contact force chain graph of the graphite material according to the contact data of the plurality of graphite particles, the contact force chain graph being used for representing contact force data between the plurality of graphite particles; and determining the contact characteristic parameters of the graphite material according to the contact force chain graph.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of general data processing, and particularly relates to a method for determining contact characteristic parameters of graphite material and related devices. BACKGROUND

[0002] In the contact characteristic parameters of graphite material in the prior art, a real graphite material needs to be obtained for testing, a large number of tests and data collection need to be performed, and then a simulation model of the contact characteristic parameters of the graphite material and related parameters is obtained to realize simulation prediction of the contact characteristic parameters of the graphite material.

[0003] However, such a simulation model is realized by inputting related data to output the contact characteristic parameters of the graphite material, and the accuracy thereof depends on the real data of the graphite material as training data, thereby causing the existing method for determining the contact characteristic parameters of the graphite material to have the problem of low accuracy of the contact characteristic parameters when facing different parameter graphite materials. SUMMARY

[0004] To solve the above problem, the embodiments of the present application provide a method for determining contact characteristic parameters of graphite material and related devices, and the scheme of the present application is advantageous to improve the accuracy of the contact characteristic parameters.

[0005] In a first aspect, the embodiments of the present application provide a method for determining contact characteristic parameters of graphite material, comprising: obtaining contact data of a plurality of graphite particles in the graphite material; generating a contact force chain graph of the graphite material according to the contact data of the plurality of graphite particles, the contact force chain graph being used to represent contact force data between the plurality of graphite particles; and determining the contact characteristic parameters of the graphite material according to the contact force chain graph.

[0006] As can be seen, in the embodiments of the present application, the contact data between the graphite particles is obtained and the contact force chain graph is generated, which can intuitively and quantitatively represent the force transmission and distribution state inside the graphite system from the microscale of the material, and then the influence of the internal contact force chain of the corresponding graphite material is considered in the calculation process of the contact characteristic parameters, thereby improving the accuracy of the contact characteristic parameters.

[0007] In combination with the first aspect, in a possible implementation, the contact force chain diagram of the graphite material is generated according to the contact data of the plurality of graphite particles, including: determining contact force data between a first graphite particle and a second graphite particle according to the contact data of the first graphite particle and the contact data of the second graphite particle, the contact force data including the size and direction of the contact force, the first graphite particle and the second graphite particle being two adjacent graphite particles in the graphite material; generating a first icon of the first graphite particle, a second icon of the second graphite particle, and a contact force chain connecting the first icon and the second icon, the contact force chain being used to represent the direction and size of the contact force between the first graphite particle and the second graphite particle, wherein the contact force chain diagram includes the first icon, the second icon, and the contact force chain.

[0008] As can be seen, in the embodiments of the present application, by converting the microscopic contact data into a visualized diagram containing particle icons and directional force chains, the size and direction of the contact force between the graphite particles can be intuitively and accurately represented, and the researchers can quickly identify the unevenness of the force distribution and the key force transmission path in the system, thereby improving the reference value of the contact characteristic parameters and related data.

[0009] In combination with the first aspect, in a possible implementation, the contact characteristic parameters of the graphite material are determined according to the contact force chain diagram, including: determining first contact force data according to the contact force data between the plurality of graphite particles; determining the contact depth of the corresponding graphite particle according to the first contact force data, the contact depth representing the range and depth of stress and deformation of the graphite particle corresponding to the first contact force data due to extrusion with other graphite particles; and determining the contact characteristic parameters of the graphite material according to the contact depth.

[0010] As can be seen, in the embodiments of the present application, the first contact force data is extracted from the contact force chain diagram, and the corresponding contact depth is further calculated, thereby converting the microscopic mechanical information into a quantitative depth parameter, and improving the accuracy of the contact characteristic parameters.

[0011] In combination with the first aspect, in a possible implementation, the first contact force data is determined according to the contact force data between the plurality of graphite particles, including: dividing the contact force chain diagram into a plurality of grid regions; determining second contact force data between all graphite particles included in each grid region in the plurality of grid regions according to the contact force data between the plurality of graphite particles; determining third contact force data corresponding to each grid region according to the second contact force data of all graphite particles in each grid region, and the first contact data including the third contact force data corresponding to each grid region.

[0012] It can be seen that, in the embodiment of the present application, by dividing the macroscopic contact force chain diagram into fine grid areas and independently counting and aggregating the microscopic contact force in each area, the spatial distribution characteristics of the contact force inside the graphite material are finely and quantitatively represented, and the calculation amount is reduced and the calculation efficiency is improved without the need for accurate calculation of the contact force data of each graphite particle.

[0013] In combination with the first aspect, in a possible embodiment, the contact characteristic parameter of the graphite material is determined according to the contact depth, including: calculating a first contact depth component of the corresponding graphite particle in a first direction according to the contact depth; calculating a second contact depth component of the corresponding graphite particle in a second direction according to the contact depth, the second direction being perpendicular to the first direction; and calculating a third contact depth component of the corresponding graphite particle in a third direction according to the contact depth, the third direction being perpendicular to the first direction and the second direction respectively.

[0014] It can be seen that, in the embodiment of the present application, by decomposing the overall contact depth into three spatial directions, the internal contact anisotropy of the graphite material is accurately and quantitatively represented, thereby overcoming the limitations of relying only on the macroscopic expansion rate or a single contact force for evaluation, and clearly revealing the significant differences and degrees of contact strength in different directions from the mechanical point of view, further improving the reference value of the contact characteristic parameter.

[0015] In combination with the first aspect, in a possible embodiment, the method further includes: generating a first identifier according to the first contact depth component, the first identifier being used to represent the size of the first contact depth component; generating a first contact anisotropy distribution map of the graphite material in the first direction according to the contact force chain diagram and the first identifier; generating a second identifier according to the second contact depth component, the second identifier being used to represent the size of the second contact depth component; generating a second contact anisotropy distribution map of the graphite material in the second direction according to the contact force chain diagram and the second identifier; generating a third identifier according to the third contact depth component, the third identifier being used to represent the size of the third contact depth component; and generating a third contact anisotropy distribution map of the graphite material in the third direction according to the contact force chain diagram and the third identifier.

[0016] It can be seen that, in the embodiment of the present application, by creating an independent visual identifier for the contact depth component of each direction and combining it with the basic contact force chain diagram, a directional contact anisotropy distribution map is generated, and researchers can respectively examine the contact strength distribution patterns in different directions, further improving the reference value of the contact characteristic parameter.

[0017] In combination with the first aspect, in a possible implementation, the method further includes: generating a third icon according to the contact depth, the third icon being used to represent the average contact depth of all graphite particles in the graphite material in the corresponding direction; and generating a contact depth vector diagram according to the third icon.

[0018] It can be seen that, in the embodiments of the present application, by converting the calculated contact depth components in each direction into intuitive graphical icons and integrating them into a contact depth vector diagram, an efficient representation method combining quantitative data and spatial visualization is provided, and the contact dominance in various directions is clearly revealed, further improving the reference value of the contact characteristic parameters.

[0019] By implementing the method in the above embodiments, it can be seen that, in the above embodiments, by obtaining the contact data between the graphite particles and generating a contact force chain diagram, and then determining the contact characteristic parameters of the graphite material based on the contact force chain diagram, the accuracy of the contact characteristic parameters is improved. By using the contact depth data, the micro-mechanical information is converted into quantitative depth parameters, and the accuracy of the contact characteristic parameters is improved. By using the contact force chain diagram, the contact anisotropy distribution diagram, and the contact depth vector diagram, the reference value of the contact characteristic parameters is improved.

[0020] In a second aspect, the embodiments of the present application provide a contact characteristic parameter determination apparatus of a graphite material, the apparatus comprising:

[0021] An acquisition unit, configured to acquire contact data of a plurality of graphite particles in the graphite material.

[0022] A generation unit, configured to generate a contact force chain diagram of the graphite material according to the contact data of the plurality of graphite particles, the contact force chain diagram being used to represent contact force data between the plurality of graphite particles.

[0023] A determination unit, configured to determine contact characteristic parameters of the graphite material according to the contact force chain diagram.

[0024] In a third aspect, the embodiments of the present application provide an electronic device, comprising a processor, a memory, a communication interface, and one or more programs, the one or more programs being stored in the memory and configured to be executed by the processor, and one or more instructions being adapted to be loaded and executed by the processor to perform part or all of the method of the first aspect and / or the second aspect.

[0025] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute part or all of the method of the first aspect and / or the second aspect.

[0026] In a fifth aspect, the present application provides a computer program product, when a computer reads and executes the computer program product, the computer program product causes the computer to execute part or all of the method of the first aspect and / or the second aspect.

[0027] It can be understood that the beneficial effects of the embodiments of the second aspect to the fifth aspect can refer to the beneficial effects in the method of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0029] Figure 1 An application scenario diagram of a graphite material contact characteristic parameter determination method provided by the embodiments of the present application;

[0030] Figure 2 A flowchart of a graphite material contact characteristic parameter determination method provided by the embodiments of the present application;

[0031] Figure 3 A schematic diagram of a contact force chain diagram provided by the embodiments of the present application;

[0032] Figure 4 A flowchart of another graphite material contact characteristic parameter determination method provided by the embodiments of the present application;

[0033] Figure 5 A contact force chain diagram after being divided into multiple grid regions provided by the embodiments of the present application;

[0034] Figure 6 A first contact anisotropy distribution diagram in a first direction provided by the embodiments of the present application;

[0035] Figure 7 A flowchart of still another graphite material contact characteristic parameter determination method provided by the embodiments of the present application;

[0036] Figure 8 A contact depth vector diagram of a graphite material provided by the embodiments of the present application;

[0037] Figure 9 A structural diagram of a graphite material contact characteristic parameter determination device provided by the embodiments of the present application;

[0038] Figure 10A structural schematic diagram of an electronic device provided by an embodiment of the present application.

[0039] Brief Description of the Drawings: 100: application scenario; 101: computing device; 102: simulation device; 900: graphite material contact characteristic parameter determination apparatus; 901: acquisition unit; 902: generation unit; 903: determination unit; 1000: electronic device; 1001: memory; 1002: processor; 1003: communication interface; 1004: bus. DETAILED DESCRIPTION

[0040] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work fall within the scope of protection of the present application.

[0041] The terms “first”, “second”, and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product, or device.

[0042] Reference herein to “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined with other embodiments.

[0043] The embodiments of the present application will be described below with reference to the drawings.

[0044] Please refer to Figure 1 , Figure 1 An application scenario schematic diagram of a graphite material contact characteristic parameter determination method provided by an embodiment of the present application is shown in the application scenario 100, which includes a computing device 101 and a simulation device 102.

[0045] The computing device 101 is configured to acquire contact data generated by the simulation device 102 and determine the contact characteristic parameters of the corresponding graphite material based on the contact data.

[0046] The simulation device 102 is configured to simulate the graphite material to obtain contact data of a plurality of graphite particles in the graphite material.

[0047] The contact data herein is used to characterize and quantify the microscopic contact state between particles, including, for example, contact area, contact pressure, contact point distribution, and other related data.

[0048] The computing device 101 obtains the contact data of the plurality of graphite particles in the graphite material.

[0049] Specifically, the contact data herein can be obtained by discrete element simulation means, or indirectly measured by microscopic mechanical tests. For example, based on the measured particle size distribution and expansion rate data of the graphite, a discrete element model containing the real particle size and mechanical parameters can be established, and the contact information between the particles during the compaction and expansion process can be extracted by roll pressing and static expansion simulation calculation, including the normal force and tangential contact force.

[0050] The computing device 101 generates a contact force chain graph of the graphite material according to the contact data of the plurality of graphite particles, and the contact force chain graph is used to characterize the contact force data between the plurality of graphite particles.

[0051] Specifically, the contact force chain graph of the graphite material is generated according to the contact data of the plurality of graphite particles. The contact force chain graph herein is a graph used to visually express the force transmission network and force distribution characteristics inside the particle system, which is obtained by converting the contact force data of each pair of contact particles extracted by simulation or test into a graphical element.

[0052] The computing device 101 determines the contact characteristic parameters of the graphite material according to the contact force chain graph.

[0053] Specifically, the contact characteristic parameters of the graphite material are determined according to the contact force chain graph. The contact characteristic parameters are key indicators for quantitatively describing the internal contact state of the graphite material, which can include average contact force, maximum contact force, contact force distribution uniformity, and contact anisotropy strength based on spatial direction, etc.

[0054] Further, in the above content, the contact force chain graph is generated by the contact data of the graphite particles in the graphite electrode made of the graphite material, and then the contact characteristic parameters of the graphite material are calculated. On this basis, the above contact characteristic parameter determination method can also be applied to the determination of the contact characteristic parameters of hard carbon, silicon-carbon, lithium iron phosphate, and other electrode particle materials.

[0055] It can be seen that, in the embodiment of the present application, by acquiring the contact data between the graphite particles and generating the contact force chain diagram, the force transmission and distribution state inside the graphite system can be intuitively and quantitatively characterized from the microscale of the material, and then the influence of the internal contact force chain of the corresponding graphite material is considered in the calculation process of the contact characteristic parameters, thereby improving the accuracy of the contact characteristic parameters.

[0056] Embodiment one: please see Figure 2 , Figure 2 The flowchart of the contact characteristic parameter determination method of the graphite material provided in the embodiment of the present application can be implemented based on the application scenario 100 as shown in Figure 1 , and includes steps S201-S203 as shown in Figure 2 .

[0057] S201: The computing device acquires contact data of a plurality of graphite particles in the graphite material.

[0058] S202: The computing device generates a contact force chain diagram of the graphite material according to the contact data of the plurality of graphite particles, and the contact force chain diagram is used to characterize the contact force data between the plurality of graphite particles.

[0059] Optionally, generating the contact force chain diagram of the graphite material according to the contact data of the plurality of graphite particles includes: determining contact force data between a first graphite particle and a second graphite particle according to the contact data of the first graphite particle and the contact data of the second graphite particle, the contact force data including the size and direction of the contact force, the first graphite particle and the second graphite particle being two adjacent graphite particles in the graphite material; generating a first icon of the first graphite particle, a second icon of the second graphite particle, and a contact force chain connecting the first icon and the second icon, the contact force chain being used to characterize the direction and size of the contact force between the first graphite particle and the second graphite particle, wherein the contact force chain diagram includes the first icon, the second icon, and the contact force chain.

[0060] Specifically, in the embodiment of the present application, the method for generating the contact force chain diagram is explained.

[0061] First, the contact force data between a first graphite particle and a second graphite particle is determined according to the contact data of the first graphite particle and the contact data of the second graphite particle. The first graphite particle and the second graphite particle are two particles that are adjacent and have mechanical contact in the graphite material. In a specific implementation, the contact force data of the interaction between any two contact particles can be directly queried or exported through a post-processing module of a discrete element simulation software. The contact force data at least includes the size and vector direction of the normal contact force, and the vector direction is determined by the particle center connecting line and the force direction, which characterizes the force transmission path.

[0062] Subsequently, a first icon of the first graphite particle and a second icon of the second graphite particle are generated. In the visualization process, each graphite particle is usually represented as a graphical node with a specific position (e.g., particle centroid coordinates), such as a dot or a sphere. The size of the icon can be proportional to the actual particle size, facilitating the observation of the correspondence between the particle size distribution and the contact network.

[0063] Next, a contact force chain connecting the first icon and the second icon is generated. The contact force chain is a directed graphical element that connects two particle icons and intuitively represents the mechanical interaction between them. In implementation, the force chain can be drawn according to the size and direction of the calculated contact force: for example, the line thickness or color depth of the force chain is used to map the size of the contact force (e.g., the thicker the line or the redder the color, the greater the force), and the arrow on the force chain is used to clearly indicate the direction of the contact force transmission (e.g., from the force- applying particle to the force-receiving particle).

[0064] For example, referring to Figure 3 , Figure 3 a schematic diagram of a contact force chain diagram provided by an embodiment of the present application. As can be seen, the diagram includes a first icon corresponding to the first graphite particle and a second icon corresponding to the second graphite particle; the relative positions of the first icon and the second icon correspond to the relative positions of the first graphite particle and the second graphite particle in the graphite material. The contact force chain connecting the first icon and the second icon represents the contact force between the first graphite particle and the second graphite particle, and it can be seen that the contact force is transmitted from the second graphite particle to the first graphite particle. In addition, the size of the corresponding contact force can be represented by the thickness or color of the link force chain.

[0065] In the actual contact force chain diagram, there will be icons corresponding to several graphite particles in one or more layers of the graphite material and contact force chains, Figure 3 which are only examples.

[0066] By integrating and rendering the first icon, the second icon, and the contact force chain connecting them, a contact force chain diagram is finally formed. The diagram comprehensively presents the contact force network between the selected region or all particles in the graphite material, and can clearly reveal the distribution of the force chain, the main path of force transmission, and the local contact force concentration area.

[0067] As can be seen, in the embodiments of the present application, by converting the micro-contact data into a visualization graph containing particle icons and directed force chains, the size and direction of the contact force between graphite particles can be intuitively and accurately represented, and researchers can quickly identify the unevenness of the force distribution and the key force transmission path in the system, thereby improving the reference value of the contact characteristic parameters and related data.

[0068] S203: The computing device determines the contact characteristic parameters of the graphite material according to the contact force chain diagram.

[0069] Optionally, the contact characteristic parameter of the graphite material is determined according to the contact force chain diagram, including: determining first contact force data according to contact force data between a plurality of graphite particles; determining a contact depth of the corresponding graphite particle according to the first contact force data, the contact depth representing a range and depth of stress and deformation of the graphite particle corresponding to the first contact force data extruded by other graphite particles; and determining the contact characteristic parameter of the graphite material according to the contact depth.

[0070] Specifically, in the embodiment of the present application, the method for determining the contact characteristic parameter according to the contact force chain diagram is explained. The computing device can determine the contact characteristic parameter of the overall graphite material based on the contact depth of each graphite particle represented in the contact force chain diagram, which is caused by the extrusion and collision of each graphite particle with other graphite particles.

[0071] First, the first contact force data is determined according to the contact force data between a plurality of graphite particles. The first contact force data is used to represent the typical or representative contact force borne by one or a group of corresponding graphite particles.

[0072] Subsequently, the contact depth of the corresponding graphite particle is determined according to the first contact force data. The contact depth is a mechanical characterization parameter, which describes the spatial range and penetration depth of the stress field and plastic deformation when the graphite particle is extruded with other adjacent particles under the action of the first contact force.

[0073] Finally, the contact characteristic parameter of the graphite material is determined according to the contact depth. The contact characteristic parameter is a core index for quantifying the internal contact state of the material. Based on the calculated contact depth, parameters such as contact anisotropy strength can be further derived, so as to quantitatively describe the inhomogeneity of contact in the spatial distribution.

[0074] As can be seen, in the embodiment of the present application, the first contact force data extracted from the contact force chain diagram is further calculated to obtain the corresponding contact depth, which converts the micro-mechanical information into a quantitative depth parameter, thereby improving the reference value of the contact characteristic parameter.

[0075] Optionally, the contact characteristic parameter of the graphite material is determined according to the contact depth, including: calculating a first contact depth component of the corresponding graphite particle in a first direction according to the contact depth; calculating a second contact depth component of the corresponding graphite particle in a second direction according to the contact depth, the second direction being perpendicular to the first direction; and calculating a third contact depth component of the corresponding graphite particle in a third direction according to the contact depth, the third direction being perpendicular to the first direction and the second direction, respectively.

[0076] Specifically, the contact characteristic parameters of the graphite material in the embodiments of the present application mainly include the contact depth of each graphite particle in the graphite material, which is taken as an example for illustration in the present example.

[0077] First, a first contact depth component of the corresponding graphite particle in a first direction is calculated according to the contact depth. The first direction is usually defined as the thickness direction (Z-axis direction) of the graphite pole piece. In a specific implementation, the contact depth itself is a vector or a directional scalar field.

[0078] Subsequently, a second contact depth component of the corresponding graphite particle in a second direction is calculated according to the contact depth, and the second direction is perpendicular to the first direction. Usually, the second direction can be selected as a principal axis direction (X-axis direction) in the pole piece plane. The calculation principle is the same as that of the first component, that is, the contact depth vectors of all contact points of the selected particle are projected, counted and averaged in the second direction (X-axis direction).

[0079] Then, a third contact depth component of the corresponding graphite particle in a third direction is calculated according to the contact depth, and the third direction is perpendicular to the first direction and the second direction. The third direction is another principal axis direction (Y-axis direction) in the pole piece plane perpendicular to the second direction. Through the same vector projection and averaging method, the average contact depth component in the third direction can be obtained.

[0080] Through the above steps, the contact depth components of the corresponding graphite particle in three mutually perpendicular spatial directions can be obtained. The three components together constitute the core contact characteristic parameters for describing the contact spatial anisotropy of the graphite material. By comparing the sizes of the three components, it can be quantitatively judged which direction the contact dominates (for example, the contact depth component in the thickness direction is usually much larger than the components in the plane direction), so that after the contact characteristic parameters of all graphite particles in the graphite material are calculated, the spatial orientation characteristics of the internal force network of the graphite particles after a certain process can be revealed.

[0081] As can be seen, in the embodiments of the present application, the internal contact anisotropy of the graphite material is accurately quantified by decomposing the overall contact depth into three spatial directions, thereby overcoming the limitations of relying only on the macroscopic expansion rate or a single contact force for evaluation, and clearly revealing the significant differences and degrees of contact strength in different directions from the mechanical point of view, further improving the reference value of the contact characteristic parameters.

[0082] Optionally, before the computing device acquires the contact data of the plurality of graphite particles in the graphite material, the method further comprises: selecting, based on a mapping relationship between the particle size scales and a preset mechanical contribution model, a particle size scale that has a contribution to the overall contact force or contact anisotropy that exceeds a preset threshold as a target particle size scale; and acquiring the contact data of the plurality of graphite particles in the graphite material, comprising: acquiring the contact data of the graphite particles corresponding to the target particle size scale.

[0083] Specifically, it is necessary to select the most suitable target particle size scale from the particle size distribution of the graphite particles in the graphite material as the object of simulation and calculation.

[0084] First, selection is made based on a mapping relationship between the particle size scales and a preset mechanical contribution model. The rule relates physical statistical characteristics to mechanical effects. The preset mechanical contribution model is used to evaluate the relative importance of particles of different sizes in the formation of the overall contact force network or the generation of contact anisotropy.

[0085] Exemplarily, it can be found through preliminary simulation that particles in a certain particle size range (such as medium to large particles) have the most significant contribution to the maximum contact force of the system or the contact depth in the thickness direction due to their bridging effect. Therefore, a contribution threshold (such as a contribution of more than 20% of the overall) is set, and the particle size scale corresponding to the particle group whose contribution exceeds the threshold is determined as the target scale.

[0086] After the target particle size scale is selected, subsequent steps of acquiring contact data, generating force chain diagrams, and determining contact characteristic parameters are all carried out around the graphite particles corresponding to the target scale.

[0087] In addition, the target particle size scale here can also be selected based on the statistical characteristics of the particle size distribution. The particle size distribution is a key physical characteristic of the graphite material, and is usually measured by a laser particle size analyzer and presented as a cumulative distribution curve. Based on the statistical characteristics of this curve, a recognized characteristic particle size value or range can be directly selected as the focus of analysis. For example, the median particle size D50 (the particle size corresponding to a cumulative distribution of 50%) can be selected as the target scale, because particles of this scale are usually centrally representative in terms of quantity or volume.

[0088] As can be seen, in the embodiments of the present application, the target particle size scale is determined by a preset rule or a set value, which not only improves the analysis efficiency, but also ensures that the contact characteristic parameters of the graphite material can correspond to the actual test data, providing a basis for adjusting the calculation method or the simulation model through test data and simulation data.

[0089] Example 2: The above-mentioned application embodiments provide a method for determining the contact characteristic parameters of graphite materials based on the contact force data of each graphite particle. Based on this, and considering the computational complexity, this application embodiment also provides a more efficient method for determining the contact characteristic parameters of graphite materials.

[0090] Please see Figure 4 , Figure 4 This is a flowchart illustrating another method for determining contact characteristic parameters of graphite materials provided in an embodiment of this application. It can be based on... Figure 1 The application scenario 100 shown is implemented as follows: Figure 4 As shown, it includes steps S401-S407.

[0091] S401: The computing device acquires contact data of multiple graphite particles in the graphite material.

[0092] S402: The computing device generates a contact force chain diagram of the graphite material based on the contact data of multiple graphite particles. The contact force chain diagram is used to characterize the contact force data between multiple graphite particles.

[0093] For detailed explanations of steps S401-S402, please refer to the descriptions and related content of steps S201-S202; they will not be repeated here.

[0094] S403: The computing device divides the contact force chain diagram into multiple grid regions.

[0095] Specifically, to reduce the computational data required by computing devices and improve computational efficiency, the contact force chain diagram needs to be divided into multiple grid regions of equal area. Each grid region is then treated as a whole, thereby characterizing the contact properties of graphite materials in different partitions through multiple partitions.

[0096] First, the contact force chain diagram is divided into multiple grid regions. In practice, based on the size of the area to be analyzed and the required accuracy, regularly divided grid cells can be established on the three-dimensional space or two-dimensional projection surface corresponding to the contact force chain diagram.

[0097] For example, please see Figure 5 , Figure 5 This application provides a contact force chain diagram divided into multiple grid regions, in an embodiment of the present application. Figure 5 The study divides the graphite particle set of interest into 16 spatial sub-regions by establishing 16 grid cells. Each grid region corresponds to an independent spatial cell for subsequent local data statistics. Taking one grid region as an example, it can be seen that... Figure 5 The grid area marked in the image includes two graphite particles and their corresponding contact force chains. The descriptions of the icons in other grid areas are similar to those above and will not be repeated here.

[0098] S404: The computing device determines, according to the contact force data between the plurality of graphite particles, second contact force data between all graphite particles included in each of the plurality of grid regions.

[0099] After the contact force chain graph is divided into the plurality of grid regions, the second contact force data between all graphite particles included in each of the plurality of grid regions is determined according to the contact force data between the plurality of graphite particles. The second contact force data includes the contact force between all graphite particles located in the same grid cell and interacting with each other.

[0100] S405: The computing device determines, according to the second contact force data of all graphite particles in each grid region, third contact force data corresponding to each grid region, and the first contact data includes the third contact force data corresponding to each grid region.

[0101] In the embodiment of the present application, the first contact force data includes the third contact force data corresponding to each grid region in the contact force chain graph, and the third contact force data is calculated according to the second contact force data.

[0102] Specifically, the third contact force data corresponding to each grid region is determined according to the second contact force data of all graphite particles in each grid region. The third contact force data here is the representative contact force value of the grid region. In a specific operation, the second contact force data between two graphite particles existing in the cell and in contact can be statistically processed, for example, the vector average, maximum value or standard deviation thereof is calculated, and the statistical result is taken as the first contact force data of the grid region.

[0103] As can be seen, in the embodiment of the present application, by dividing the macroscopic contact force chain graph into fine grid regions and independently statistically processing and aggregating the microscopic contact force in each region, the spatial distribution characteristics of the contact force inside the graphite material are finely and quantitatively represented, and at the same time, the calculation amount is reduced and the calculation efficiency is improved without the need for accurate calculation of the contact force data of each graphite particle.

[0104] S406: The contact depth of the corresponding graphite particle is determined according to the first contact force data, and the contact depth represents the range and depth of stress and deformation of the graphite particle corresponding to the first contact force data and other graphite particles.

[0105] It should be noted that in the embodiment of the present application, the contact depth corresponds to the contact depth of all graphite particles in the corresponding grid region as a whole.

[0106] Wherein, the contact force chain graph is divided into a plurality of grid regions. Exemplarily, the contact force chain graph is divided into a plurality of grid regions, and the grid region is a square grid region. Figure 5The shown, and the graphite particle assembly of interest is divided into 16 independent spatial sub-regions. Each grid region serves as an independent analysis unit.

[0107] Firstly, according to the contact force data between the plurality of graphite particles, the second contact force data between all graphite particles included in each of the plurality of grid regions is determined. The second contact force data refers to the set of contact force data generated by the mutual contact between all graphite particles located entirely within the same grid unit. In implementation, based on the complete contact data set obtained from simulation or experiment, all graphite particles with centroid coordinates falling within a specific grid unit are extracted through spatial coordinate screening, and then the second contact force data between two graphite particles in these particles is obtained, including the magnitude and direction of the force.

[0108] Then, according to the second contact force data of all graphite particles in each grid region, the third contact force data corresponding to each grid region is determined. The third contact force data is a single or a set of statistical values for representing the overall contact force level of the grid region. In specific operation, statistical analysis can be performed on the second contact force data in the unit, such as calculating the average, median, maximum or root mean square value. By this method, the contact force value of each grid can be obtained, so as to convert the intuitive and overall contact force chain diagram information into a regional and numerical contact force distribution matrix.

[0109] S407: Determine the contact characteristic parameters of the graphite material according to the contact depth.

[0110] In the embodiments of the present application, the specific steps of determining the contact characteristic parameters of the graphite material according to the contact depth are similar to those of the above-mentioned embodiments. Specifically, on the basis of obtaining representative contact force data through grid regions, the calculated contact depth is further subjected to spatial vector decomposition to quantify the anisotropy of contact.

[0111] First, the first contact depth component of the corresponding graphite particle (i.e. the corresponding grid region) in the first direction is calculated according to the contact depth. The first direction is usually defined as the thickness direction of the graphite pole piece (Z-axis direction). In specific implementation, for each grid region or the characteristic particles inside it, the representative contact depth information has been obtained. The contact depth represents the degree of spatial penetration of the stress and deformation field caused by the contact force. The calculation of the first contact depth component is a statistical average of the projection component of the contact depth vector of all relevant contact points in the region in the first direction (Z-axis direction).

[0112] Subsequently, a second contact depth component of the corresponding graphite particle in a second direction is calculated according to the contact depth, the second direction being perpendicular to the first direction. The second direction is usually selected as one of the principal axis directions (X-axis direction) in the pole piece plane. The calculation principle is the same as before, i.e. the projection component of the contact depth vector in the second direction (X-axis direction) in the same analysis region is extracted and averaged.

[0113] Then, a third contact depth component of the corresponding graphite particle in a third direction is calculated according to the contact depth, the third direction being perpendicular to the first direction and the second direction respectively. The third direction is another principal axis direction (Y-axis direction) in the pole piece plane perpendicular to the second direction. By the same vector decomposition and averaging method, the average contact depth component in the Y direction can be obtained.

[0114] Optionally, the method further comprises generating a first mark according to the first contact depth component, the first mark being used to represent the size of the first contact depth component; generating a first contact anisotropy distribution map of the graphite material in the first direction according to the contact force chain map and the first mark; generating a second mark according to the second contact depth component, the second mark being used to represent the size of the second contact depth component; generating a second contact anisotropy distribution map of the graphite material in the second direction according to the contact force chain map and the second mark; generating a third mark according to the third contact depth component, the third mark being used to represent the size of the third contact depth component; and generating a third contact anisotropy distribution map of the graphite material in the third direction according to the contact force chain map and the third mark.

[0115] Specifically, in the embodiments of the present application, the contact depth component and the contact force chain map of the graphite material are combined to be displayed in images.

[0116] First, a first mark is generated according to the first contact depth component. The first contact depth component corresponds to the first direction. The first mark specifically includes an image, a number or a color, which is used to convert the numerical size of the component into an intuitive graphical attribute. In implementation, color (such as a gradient color from blue to red), column length, icon brightness or specific texture, etc. can be used as the mark.

[0117] Subsequently, a first contact anisotropy distribution map of the graphite material in the first direction is generated according to the contact force chain map and the first mark. The distribution map is a kind of composite visualization result, the bottom layer of which is the contact force chain map reflecting the particle position and the contact force network, and the upper layer is superimposed or fused with the first mark representing the contact depth information in the first direction.

[0118] Similarly, a second identification is generated according to the second contact depth component, and a second contact anisotropy distribution map of the graphite material in the second direction is generated according to the contact force chain map and the second identification; a third identification is generated according to the third contact depth component, and a third contact anisotropy distribution map of the graphite material in the third direction is generated according to the contact force chain map and the third identification. The generation logic is exactly the same as that in the first direction, and the difference lies in that the data sources used are the second contact depth component and the third contact depth component, respectively. By generating distribution maps in three independent directions, the differences in contact behavior in different spatial dimensions can be clearly displayed by side-by-side comparison.

[0119] Exemplarily, please refer to Figure 6 A first contact anisotropy distribution map in the first direction is provided for the embodiment of the present application, wherein the map is based on Figure 5 The contact force first contact depth component force chain map and the corresponding first contact depth component shown in FIG. 10 are generated. Here, one grid area is taken as an example for illustration. As can be seen, in the grid area marked by the first identification, in addition to the elements corresponding to the graphite particles and the contact force chain, there is also a number in the form of text representing the size of the first contact depth component of the grid area in the first direction. In addition, the first identification can also represent the size of the first contact depth component in the form of color, for example, the first contact depth component is positively correlated with the color depth of the first identification. Figure 6

[0120] Further, the forms of the total contact force data second contact anisotropy distribution map and the third contact anisotropy distribution map (as well as the form of the undifferentiated total contact depth) are also the same as the first contact anisotropy distribution map shown in FIG. 10, which will not be described here. Figure 6

[0121] As can be seen, in the embodiment of the present application, by creating an independent visual identification for the contact depth component of each direction and combining it with the basic contact force chain map, a contact anisotropy distribution map in a specific direction is generated, and researchers can respectively examine the contact intensity distribution pattern in different directions, thereby further improving the reference value of the contact characteristic parameters.

[0122] Embodiment three: The above-mentioned application embodiments mainly focus on describing the determination process of the contact characteristic parameters of the graphite material. Based on this, in terms of adjustment and verification of the test data related to the graphite material, the present application further provides another method for determining the contact characteristic parameters of the graphite material.

[0123] Please refer to Figure 7 , Figure 7 The flowchart of another method for determining the contact characteristic parameters of the graphite material provided for the embodiment of the present application can be implemented based on the application scenario 100 shown in FIG. 11, as shown in FIG. 12. Figure 1 Figure 7 As can be seen, in the embodiment of the present application, by creating an independent visual identification for the contact depth component of each direction and combining it with the basic contact force chain map, a contact anisotropy distribution map in a specific direction is generated, and researchers can respectively examine the contact intensity distribution pattern in different directions, thereby further improving the reference value of the contact characteristic parameters.​​Figure 7 As shown, the method comprises steps S701-S705.

[0124] S701: The computing device obtains contact data of a plurality of graphite particles in a graphite material.

[0125] S702: The computing device generates a contact force chain graph of the graphite material according to the contact data of the plurality of graphite particles, the contact force chain graph being used to represent contact force data between the plurality of graphite particles.

[0126] S703: The computing device determines first contact force data according to the contact force data between the plurality of graphite particles.

[0127] S704: The computing device determines a contact depth of a corresponding graphite particle according to the first contact force data, the contact depth representing a range and depth of stress and deformation of the graphite particle corresponding to the first contact force data extruded by other graphite particles.

[0128] S705: The computing device determines a contact characteristic parameter of the graphite material according to the contact depth.

[0129] Specifically, the detailed description of steps S701-S705 can be found in the related content in Embodiment One and Embodiment Two, which will not be repeated here.

[0130] S706: The computing device generates a third icon according to the contact depth, the third icon being used to represent an average contact depth of all graphite particles in the graphite material in a corresponding direction.

[0131] Specifically, the third icon is generated according to the contact depth. The third icon is a visual element used to graphically represent the average contact depth in a specific direction. In specific implementations, different lengths, thicknesses or colors of columns, arrows or color blocks can be used to represent the average contact depth values in different directions, and the size of the icon is in direct proportion to the numerical value of the depth component.

[0132] S707: The computing device generates a contact depth vector diagram according to the third icon.

[0133] Specifically, the contact depth vector diagram is generated according to the third icon. The contact depth vector diagram is a comprehensive visualization chart used to integrate and display the contact depth information of the graphite material in multiple spatial directions in one graph, thereby intuitively presenting the anisotropic distribution characteristics of the contact. In specific implementations, the third icons representing different directions can be arranged or superimposed in the same coordinate system or schematic diagram according to their corresponding spatial directional relationship (such as perpendicular to each other). The contact depth component values of the graphite particles and the particles in the overall graphite material in different directions are displayed, and the graph has the characteristics of the contact depth vector diagram, and intuitively compares the differences in contact strength in different directions.

[0134] Exemplarily, please refer to Figure 8 , Figure 8 A contact depth vector diagram of a graphite material is provided in the embodiment of the present application, which includes icons representing graphite particles and a plurality of third icons representing average contact depths in corresponding directions. It should be noted that the graphite particles are not a specific graphite particle in the graphite material, but a characteristic particle for representing all graphite particles, and the corresponding third icons represent the average contact depths of all graphite particles in the direction. The value of the contact depth is represented by the length, thickness or color of the third icon, and the direction is represented by the arrow of the third icon. For example, the contact depth vector diagram shown in Figure 8 includes two third icons of different directions and different thicknesses, which represent the average contact depths of two different sizes and directions, respectively.

[0135] Here, only two third icons are taken as examples, and more third icons will be included in the actual contact depth vector diagram to fully show the average contact depth values and directions of the graphite particles in all directions.

[0136] It can be seen that in the embodiment of the present application, the calculated contact depth components in various directions are converted into intuitive graphical icons and integrated into a contact depth vector diagram, providing an efficient representation method combining quantitative data and spatial visualization, which clearly reveals the contact dominance in various directions and further improves the reference value of the contact characteristic parameters.

[0137] In addition, the above step only obtains the contact characteristic parameters of a graphite material. Therefore, the steps in the above embodiment can iterate the contact characteristic parameters of different graphite materials to complete the overall parameter prediction, and the results are as follows. Please refer to Table 1 below, which is a contact characteristic parameter diagram of five different types of graphite materials with serial numbers 1-5 provided by the present application.

[0138] Table 1

[0139]

[0140] In Table 1, the graphite material with serial number 1 is taken as an example, the maximum contact force of which is 0.167 N. The average contact depth of the graphite particles is 3.18 µm; the component of the contact depth in the X direction is 0.177 µm; the component of the contact depth in the Y direction is 0.144 µm; and the component of the contact depth in the Z direction is 0.364 µm. The related contact characteristic parameters of other graphite materials can be referred to Table 1, which will not be described here.

[0141] By implementing the method in the above application examples, it can be seen that in the above application examples, by acquiring the contact data between the graphite particles and generating the contact force chain diagram, and then determining the contact characteristic parameters of the graphite material based on the contact force chain diagram, the accuracy of the contact characteristic parameters is improved. By the contact depth data, the micro-mechanical information is converted into quantitative depth parameters, and the accuracy of the contact characteristic parameters is improved. By the contact force chain diagram, the contact anisotropy distribution diagram, and the contact depth vector diagram, the reference value of the contact characteristic parameters is improved.

[0142] Based on the description of the above configuration method embodiment, the application further provides a graphite material contact characteristic parameter determination device 900. The graphite material contact characteristic parameter determination device 900 can be a computer program (including program code) running in the computing device 101 shown in the figure, and is used to execute the method shown in Figure 1 Figure 2 Figure 4 Figure 7 Please refer to Figure 9 Figure 9 The graphite material contact characteristic parameter determination device provided by the embodiment of the application is shown in the figure. The graphite material contact characteristic parameter determination device 900 includes:

[0143] The acquisition unit 901 is configured to acquire contact data of a plurality of graphite particles in a graphite material.

[0144] The generation unit 902 is configured to generate a contact force chain diagram of the graphite material according to the contact data of the plurality of graphite particles. The contact force chain diagram is used to represent the contact force data between the plurality of graphite particles.

[0145] The determination unit 903 is configured to determine the contact characteristic parameters of the graphite material according to the contact force chain diagram.

[0146] In a possible embodiment, in terms of generating the contact force chain diagram of the graphite material according to the contact data of the plurality of graphite particles, the generation unit 902 is further specifically configured to: determine the contact force data between a first graphite particle and a second graphite particle according to the contact data of the first graphite particle and the contact data of the second graphite particle. The contact force data includes the size and direction of the contact force. The first graphite particle and the second graphite particle are two adjacent graphite particles in the graphite material. A first icon of the first graphite particle, a second icon of the second graphite particle, and a contact force chain connecting the first icon and the second icon are generated. The contact force chain is used to represent the direction and size of the contact force between the first graphite particle and the second graphite particle. The contact force chain diagram includes the first icon, the second icon, and the contact force chain.

[0147] ​​​​In a possible implementation, in determining the contact characteristic parameter of the graphite material according to the contact force chain diagram, the determining unit 903 is further specifically configured to: determine first contact force data according to the contact force data between the plurality of graphite particles; determine a contact depth of the corresponding graphite particle according to the first contact force data, the contact depth representing a range and depth of stress and deformation of the graphite particle corresponding to the first contact force data extruded by other graphite particles; and determine the contact characteristic parameter of the graphite material according to the contact depth.

[0148] In a possible implementation, in determining the first contact force data according to the contact force data between the plurality of graphite particles, the determining unit 903 is further specifically configured to: divide the contact force chain diagram into a plurality of grid regions; determine second contact force data between all graphite particles included in each grid region of the plurality of grid regions according to the contact force data between the plurality of graphite particles; and determine third contact force data corresponding to each grid region according to the second contact force data of all graphite particles in each grid region, the first contact data including the third contact force data corresponding to each grid region.

[0149] In a possible implementation, in determining the contact characteristic parameter of the graphite material according to the contact depth, the determining unit 903 is further specifically configured to: calculate a first contact depth component of the corresponding graphite particle in a first direction according to the contact depth; calculate a second contact depth component of the corresponding graphite particle in a second direction according to the contact depth, the second direction being perpendicular to the first direction; and calculate a third contact depth component of the corresponding graphite particle in a third direction according to the contact depth, the third direction being perpendicular to the first direction and the second direction respectively.

[0150] In a possible implementation, the generating unit 902 is further specifically configured to: generate a first identifier according to the first contact depth component, the first identifier being used to represent a size of the first contact depth component; generate a first contact anisotropy distribution map of the graphite material in the first direction according to the contact force chain diagram and the first identifier; generate a second identifier according to the second contact depth component, the second identifier being used to represent a size of the second contact depth component; generate a second contact anisotropy distribution map of the graphite material in the second direction according to the contact force chain diagram and the second identifier; generate a third identifier according to the third contact depth component, the third identifier being used to represent a size of the third contact depth component; and generate a third contact anisotropy distribution map of the graphite material in the third direction according to the contact force chain diagram and the third identifier.

[0151] In a possible implementation, the generating unit 902 is further specifically configured to: generate a third icon according to the contact depth, the third icon being used to represent an average contact depth of all graphite particles in the corresponding direction of the graphite material; and generate a contact depth vector diagram according to the third icon.

[0152] Based on the description of the method embodiments and the device embodiments, please refer to Figure 10 , Figure 10 A structural schematic diagram of an electronic device is provided in the embodiments of the present application. Figure 10 The electronic device 1000 (which can be specifically a computer device, Figure 1 The computer device 101 shown in the figure includes a memory 1001, a processor 1002, a communication interface 1003, and a bus 1004. The memory 1001, the processor 1002, and the communication interface 1003 are communicatively connected to each other through the bus 1004.

[0153] The memory 1001 can be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM).

[0154] The memory 1001 can store a program, and when the program code stored in the memory 1001 is executed by the processor 1002, the processor 1002 and the communication interface 1003 are configured to perform each step of the method for determining the contact characteristic parameters of the graphite material in the embodiments of the present application.

[0155] The processor 1002 can be a general-purpose central processing unit (CPU), a micro-control device, an application-specific integrated circuit (ASIC), a graphics processing unit (GPU), or one or more integrated circuits, configured to execute a related program to implement the functions required by the units in the electronic device 1000 in the embodiments of the present application, or to execute the method for determining the contact characteristic parameters of the graphite material in the embodiments of the present application.

[0156] The processor 1002 can also be an integrated circuit chip on which resides an entirety of the processing capability of the electronic device 1000. In implementation, each step of the method for determining the contact characteristic parameter of the graphite material according to the present application can be completed by the integrated logic circuit of hardware or the instruction in the form of software in the processor 1002. The processor 1002 described above can also be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a micro-control device or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware coding processor for execution, or a combination of hardware and software modules in the coding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, or other mature storage medium in the art. The storage medium is located in the storage 1001, and the processor 1002 reads the information in the storage 1001, and combines the hardware to complete the function required to be executed by the unit included in the electronic device 1000 according to the embodiments of the present application, or executes the method for determining the contact characteristic parameter of the graphite material according to the method embodiments of the present application.

[0157] The communication interface 1003 uses a transceiver such as but not limited to a transceiver to realize the communication between the electronic device 1000 and other devices or communication networks. For example, the data can be acquired through the communication interface 1003.

[0158] The bus 1004 can include a path for transmitting information between each component (for example, the storage 1001, the processor 1002, the communication interface 1003) of the electronic device 1000.

[0159] It should be noted that although Figure 10 The electronic device 1000 shown only shows the storage 1001, the processor 1002, the communication interface 1003, but in the specific implementation process, those skilled in the art should understand that the electronic device 1000 also includes other devices necessary for normal operation. At the same time, according to the specific needs, those skilled in the art should understand that the electronic device 1000 can also include hardware devices for realizing other additional functions. In addition, those skilled in the art should understand that the electronic device 1000 can also only include the devices necessary for the embodiments of the present application, and does not have to include all the devices shown in the Figure 10

[0160] ​The embodiment of the present application further provides a chip, which comprises a processor and a data interface, and the processor reads instructions stored on a memory through the data interface to realize the method for determining the contact characteristic parameter of the graphite material.

[0161] Optionally, as an implementation manner, the chip can further comprise a memory, and the memory stores instructions, and the processor is used for executing the instructions stored on the memory, and when the instructions are executed, the processor is used for executing the method for determining the contact characteristic parameter of the graphite material.

[0162] The embodiment of the present application further provides a computer readable storage medium, which stores instructions, and when the instructions are executed on a computer or a processor, the computer or the processor executes one or more steps in any one of the above methods.

[0163] The embodiment of the present application further provides a computer program product comprising instructions, and when the computer program product is executed on a computer or a processor, the computer or the processor executes one or more steps in any one of the above methods.

[0164] Those skilled in the art will appreciate that the functions described with respect to the various illustrative logical blocks, modules, and algorithm steps described in this specification can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions described with respect to the various illustrative logical blocks, modules, and steps described in this specification can be stored or transmitted over a computer-readable medium as one or more instructions or code, and executed by a hardware-based processing unit. Computer-readable media can include computer-readable storage media, which corresponds to a tangible medium such as data storage media, or communication media including any medium that facilitates transfer of a computer program from one place to another, e.g., according to a communication protocol. In this manner, computer-readable media generally can correspond to (1) tangible computer- readable storage media which is non-transitory or (2) a communication medium such as a signal or carrier wave. Data storage media can be any available media that can be accessed by one or more computers or one or more processors to retrieve instructions, code, and / or data structures for implementation of the techniques described in this specification. A computer program product can include a computer-readable medium.

[0165] By way of example, and not limitation, such computer-readable storage media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage, or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code means in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. It should be understood, however, that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but are instead directed to non-transient, tangible storage media. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0166] Instructions can be executed by one or more processors, such as one or more digital signal processors (DSPs), general purpose microprocessors, application-specific integrated circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Accordingly, the term "processor," as used herein can refer to any of the foregoing structure or any other structure suitable for implementation of the techniques described herein. In addition, in some aspects, the functionality described herein can be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated in a combined codec. Also, the techniques could be fully implemented in one or more circuits or logic elements.

[0167] The techniques of this disclosure can be implemented in a wide variety of devices or apparatuses, including a wireless handset, an integrated circuit (IC) or a set of ICs (e.g., a chip set). Various components, modules, or units described herein can be implemented as hardware, software, firmware or any combination thereof. Hardware implementations can include processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), secure microprocessors, or any other hardware. Software implementations can include routines executed using one or more processors. Software drivers can include firmware, one or more routines, or any other software. Firmware can include one or more routines. Routines can execute using software, firmware, hardware, or any combination thereof.

[0168] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the specific description of the corresponding step processes in the foregoing method embodiments, which will not be repeated here.

[0169] It should be understood that, in the description of the present application, unless otherwise specified, " / " represents that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; wherein A, B can be singular or plural. And, in the description of the present application, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or the like means any combination of the items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c can be single or multiple. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same function and role are distinguished by using "first", "second" and the like. Those skilled in the art can understand that "first", "second" and the like do not limit the quantity and execution order, and "first", "second" and the like do not necessarily mean different. At the same time, in the embodiments of the present application, "exemplary" or "for example" means to present relevant concepts in a specific way for understanding.

[0170] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the division of the unit is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0171] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0172] In the above embodiments, all or part can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions generate all or part of the processes or functions according to the embodiments of the present application. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted by the computer readable storage medium. The computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available medium can be read-only memory (ROM), or random access memory (RAM), or magnetic medium, such as floppy disk, hard disk, magnetic tape, optical medium, such as digital versatile disc (DVD), or semiconductor medium, such as solid state disk (SSD), etc.

[0173] The above is only a specific implementation of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any change or replacement within the technical scope disclosed by the embodiments of the present application should be covered within the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

[0174] The above described device embodiments are only schematic, and the units and modules described as separate components can or can not be physically separated. In addition, part or all of the units and modules can be selected to achieve the purpose of the embodiments of the present application. Those skilled in the art can understand and implement without creative labor.

[0175] The above is only a specific implementation of the embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should be regarded as the protection scope of the present application.

Claims

1. A method of determining a contact property parameter of a graphite material, characterized by, The method comprises: acquiring contact data of a plurality of graphite particles in a graphite material; generating a contact force chain graph of the graphite material according to the contact data of the plurality of graphite particles, the contact force chain graph being used to represent contact force data between the plurality of graphite particles; determining a contact characteristic parameter of the graphite material according to the contact force chain graph, specifically comprising: determining first contact force data according to the contact force data between the plurality of graphite particles; determining a contact depth of a corresponding graphite particle according to the first contact force data, the contact depth representing a range and depth of stress and deformation of the corresponding graphite particle and other graphite particles under extrusion; determining the contact characteristic parameter of the graphite material according to the contact depth; the determination of the first contact force data according to the contact force data between the plurality of graphite particles comprises: dividing the contact force chain graph into a plurality of grid regions; determining second contact force data between all graphite particles included in each grid region of the plurality of grid regions according to the contact force data between the plurality of graphite particles; determining third contact force data corresponding to each grid region according to the second contact force data of all graphite particles in the each grid region, the first contact force data comprising the third contact force data corresponding to each grid region.

2. The method of claim 1, wherein, The generation of the contact force chain graph of the graphite material according to the contact data of the plurality of graphite particles comprises: determining contact force data between a first graphite particle and a second graphite particle according to contact data of the first graphite particle and contact data of the second graphite particle, the contact force data comprising a magnitude and a direction of the contact force, the first graphite particle and the second graphite particle being two adjacent graphite particles in the graphite material; generating a first icon of the first graphite particle, a second icon of the second graphite particle, and a contact force chain connecting the first icon and the second icon, the contact force chain being used to represent the direction and magnitude of the contact force between the first graphite particle and the second graphite particle, wherein the contact force chain graph comprises the first icon, the second icon, and the contact force chain.

3. The method of claim 1, wherein, The determination of the contact characteristic parameter of the graphite material according to the contact depth comprises: calculating a first contact depth component of a corresponding graphite particle in a first direction according to the contact depth; calculating a second contact depth component of the corresponding graphite particle in a second direction according to the contact depth, the second direction being perpendicular to the first direction; calculating a third contact depth component of the corresponding graphite particle in a third direction according to the contact depth, the third direction being perpendicular to the first direction and the second direction respectively.

4. The method of claim 3, wherein, The method further comprises: generating a first identifier according to the first contact depth component, the first identifier being used to represent a magnitude of the first contact depth component; generating a first contact anisotropy distribution graph of the graphite material in the first direction according to the contact force chain graph and the first identifier; generating a second identifier according to the second contact depth component, the second identifier being used to represent a magnitude of the second contact depth component; generate a second contact anisotropy distribution map of the graphite material in a second direction according to the contact force chain map and the second identification; generate a third identification according to the third contact depth component, the third identification being used to represent a size of the third contact depth component; generate a third contact anisotropy distribution map of the graphite material in a third direction according to the contact force chain map and the third identification.

5. The method of claim 1, wherein, The method further comprises: generate a third icon according to the contact depth, the third icon being used to represent an average contact depth of all graphite particles in the graphite material in a corresponding direction; generate a contact depth vector map according to the third icon.

6. An apparatus for determining a contact property parameter of a graphite material, characterized by The device comprises: an acquisition unit configured to acquire contact data of a plurality of graphite particles in the graphite material; a generation unit configured to generate a contact force chain map of the graphite material according to the contact data of the plurality of graphite particles, the contact force chain map being used to represent contact force data between the plurality of graphite particles; a determination unit configured to determine a contact characteristic parameter of the graphite material according to the contact force chain map, specifically comprising: determining first contact force data according to the contact force data between the plurality of graphite particles; determining a contact depth of a corresponding graphite particle according to the first contact force data, the contact depth representing a range and depth of stress and deformation of the graphite particle corresponding to the first contact force data and other graphite particles; determining the contact characteristic parameter of the graphite material according to the contact depth; the determination of the first contact force data according to the contact force data between the plurality of graphite particles comprises: dividing the contact force chain map into a plurality of grid regions; determining second contact force data between all graphite particles included in each grid region of the plurality of grid regions according to the contact force data between the plurality of graphite particles; determining third contact force data corresponding to each grid region according to the second contact force data of all graphite particles in the each grid region, the first contact force data comprising the third contact force data corresponding to each grid region.

7. An electronic device, comprising: A computer program product comprising a computer readable storage medium having stored thereon instructions that, when executed by a computer, cause the computer to carry out the steps of a method according to any of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to execute a method according to any of claims 1-5.

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