Magnetic core volume cutting method, magnetic core, equipment and storage medium

Abstract

The embodiment of the invention discloses a magnetic core cutting volume determination method, a magnetic core, equipment and a storage medium, and the method comprises the steps: obtaining the magnetic flux distribution information in the magnetic core, determining a to-be-optimized region of the magnetic core according to the magnetic flux distribution information, and enabling the to-be-optimized region to be a region with the magnetic flux density smaller than a preset density threshold value in the magnetic core; aiming at the to-be-optimized area, determining the performance index and the magnetic core cost of the corresponding magnetic core under each cutting volume; and taking the corresponding cut volumes when the performance indexes are greater than a preset performance threshold value and the magnetic core cost is smaller than a preset cost threshold value as a to-be-cut volume set in the to-be-optimized region. In the embodiment of the invention, the to-be-cut volume set represents the cut volume combination which not only can guarantee the performance of the magnetic core, but also can reduce the cost of the magnetic core. After any one to-be-cut volume in the to-be-cut volume set is cut off, the material cost and weight of the magnetic core can be reduced on the premise of ensuring the performance of the magnetic core.

Description

Technical Field

[0001] The present application relates to the field of magnetic core technology, and in particular to a method for determining a magnetic core resection volume, a magnetic core, a device and a storage medium. Background Art

[0002] With the progress of the social industrial system, the demand for various electronic devices in various industries is growing day by day. How to make electronic devices more efficient, smaller and cheaper is becoming more and more important. Magnetic devices such as planar transformers and planar inductors are widely used in various electronic devices due to their advantages such as thinness, small size, light weight and high power density. For example, planar transformers are widely used in switching power supplies.

[0003] Among them, as an important component of magnetic devices, the weight of the planar magnetic core largely determines the weight of the entire magnetic device, and the cost of the planar magnetic core accounts for a large proportion of the total cost of the magnetic device. Therefore, how to improve the planar magnetic core and design a planar magnetic core with lower cost and higher performance is an urgent problem to be solved in this field. Summary of the invention

[0004] The embodiments of the present application aim to provide a method for determining the resection volume of a magnetic core, a magnetic core, a device and a storage medium, which are helpful to reduce the volume and cost of the magnetic core and optimize the overall performance of the magnetic core.

[0005] In the first aspect, the embodiment of the present application adopts the following technical solution to solve the technical problem: a method for determining a magnetic core removal volume is provided, comprising:

[0006] Obtain the magnetic flux distribution information inside the magnetic core;

[0007] Determine a region of the magnetic core to be optimized according to the magnetic flux distribution information, wherein the region to be optimized is a region in the magnetic core where the magnetic flux density is less than a preset density threshold;

[0008] For the area to be optimized, determining the performance index and the cost of the magnetic core corresponding to each cut-off volume;

[0009] Each resection volume corresponding to when the performance index is greater than a preset performance threshold and the magnetic core cost is less than a preset cost threshold is used as a set of volumes to be resected in the area to be optimized.

[0010] In this embodiment, the regions with magnetic flux density less than a preset density threshold (i.e., relatively small magnetic flux) are first selected as regions to be optimized, thereby screening out regions that can be optimized in the magnetic core. Then, for each region to be optimized, each resection volume corresponding to a performance index greater than a preset performance threshold and a magnetic core cost less than a preset cost threshold is selected as a volume set to be resected in the region to be optimized. The volume set to be resected represents a combination of resection volumes that can both ensure the performance of the magnetic core and reduce the cost of the magnetic core. Therefore, after any volume to be resected in the volume set to be resected is resected, the material cost of the magnetic core can be reduced while ensuring the performance of the magnetic core.

[0011] In some embodiments, the method further comprises:

[0012] Determine the optimization index of the magnetic core under each volume to be removed based on the magnetic core performance and magnetic core cost corresponding to each volume to be removed;

[0013] The volume to be resected corresponding to the maximum optimization index is used as the target resection volume.

[0014] In this embodiment, by calculating the optimization index of the magnetic core under each volume to be resected, the target resection volume corresponding to the highest optimization index is obtained. The magnetic core corresponding to the target resection volume has the highest degree of optimization. After obtaining the target resection volumes corresponding to each area to be optimized, the magnetic core after resection can be obtained by resecting each target resection volume. The magnetic core after resection can maximize the optimization of the core performance while reducing the cost of the core, thereby achieving the best balance between the core cost and the core performance.

[0015] In some embodiments, the optimization index can be calculated by the following formula:

[0016]

[0017] Where V is the volume to be removed, n is the number of performance indicators, and λ i is the weight coefficient of the i-th performance indicator, f i (A) is the quantitative value of the i-th performance index, δi is the nonlinear adjustment factor of the i-th performance index, β is the weight coefficient of the core cost, g(A) is the quantitative value of the core cost, θ is the nonlinear adjustment factor of the core cost, and P is the optimization index of the core when the volume to be removed is V.

[0018] In this embodiment, the optimization index formula ensures the comprehensiveness and reliability of the evaluation results by integrating multiple performance indicators and core costs of the magnetic core. By introducing nonlinear factors, it can more accurately reflect the nonlinear relationship between different performance indicators and core costs, thereby ensuring the accuracy of the optimization index.

[0019] In some embodiments, determining the performance index of the magnetic core corresponding to each resection volume includes:

[0020] constructing a three-dimensional model of the magnetic core;

[0021] Based on the three-dimensional model and preset simulation parameters, performance indicators of the magnetic core corresponding to each cut-off volume are obtained through simulation analysis.

[0022] In this embodiment, relatively accurate core performance indicators can be obtained through simulation analysis, ensuring the accuracy and reliability of various performance indicator data, with low time cost, which helps to improve the optimization efficiency of the core.

[0023] In some embodiments, determining the magnetic core cost corresponding to each resection volume includes:

[0024] Obtaining material properties and unit price of the magnetic core;

[0025] Determine the original magnetic core volume before the magnetic core is removed, and characteristic information of each removed volume, wherein the characteristic information includes a removal size and a removal contour shape;

[0026] Determine the effective magnetic core volume after the magnetic core is removed according to the original magnetic core volume and each removed volume;

[0027] Determine the material cost of the magnetic core according to the effective magnetic core volume and the unit price of the material;

[0028] Determining the processing cost of the magnetic core according to the material properties and the characteristic information;

[0029] The magnetic core cost corresponding to the cut-off volume is determined according to the material cost and the processing cost.

[0030] In this embodiment, the cost of the magnetic core includes material cost and processing cost. The cost structure in the material use and processing process is comprehensively analyzed, and the material cost and processing cost of the magnetic core are accurately calculated, so as to improve the production efficiency of the magnetic core and effectively control the comprehensive cost, which helps to minimize the cost of the magnetic core while optimizing the magnetic core performance and improve the market competitiveness of the product.

[0031] In some embodiments, determining the processing cost of the magnetic core according to the material properties and the characteristic information includes:

[0032] Based on the material properties and the characteristic information, using a prediction model to predict the energy loss and processing time of a processing equipment during the processing of the magnetic core;

[0033] The processing cost of the magnetic core is determined according to the energy loss and the processing time.

[0034] This embodiment predicts the energy loss and processing time during the magnetic core processing at different resection volumes, and comprehensively evaluates the processing cost of the magnetic core by using the energy loss and processing time, which can achieve refined cost management and optimization, help to accurately predict and control processing costs, and thus improve product competitiveness.

[0035] In a second aspect, an embodiment of the present application provides a magnetic core obtained by using the method for determining the magnetic core resection volume as described in any of the above embodiments.

[0036] Since the magnetic core is obtained by the method described in the above embodiment, the magnetic core can optimize the magnetic core performance to a large extent, reduce the magnetic core cost and weight, and achieve a better balance between the magnetic core cost and the magnetic core performance.

[0037] In some embodiments, the magnetic core comprises:

[0038] Base plate;

[0039] Two side columns, the two side columns are respectively connected to opposite ends of the bottom plate along the first direction;

[0040] A middle column, the middle column is connected to the bottom plate and is located between the two side columns, the middle column and the two side columns are both protruding from the same side of the bottom plate;

[0041] A notch is formed at at least one end of the bottom plate along a second direction, and the notch is located at a side of the center column, wherein the second direction is perpendicular to the first direction;

[0042] The length of the middle column along the first direction is a, the vertical distance between the inner sides of the two side columns is b, the length of the middle column along the second direction is d1, and the length of the bottom plate along the second direction is d2;

[0043] The area of ​​the notch is between (0.05 and 0.15)*(a+b)*(d2-d1).

[0044] In this embodiment, the magnetic core is an E-type magnetic core, and a notch is provided at at least one end of the bottom plate of the E-type magnetic core along the second direction, and the notch is provided at a portion of the bottom plate with less magnetic flux. Compared with the traditional E-sheet magnetic core, in this embodiment, the portions of the bottom plate with less magnetic flux at the two opposite ends along the second direction are cut off and notches are formed. This can reduce the materials used in the E-type magnetic core, reduce the weight of the E-type magnetic core, and reduce the cost of the E-type magnetic core without affecting the overall performance of the E-type magnetic core.

[0045] When the area of ​​the gap is between (0.05 and 0.15)*(a+b)*(d2-d1), the cost of the core material can be reduced to a great extent without causing obvious core loss, which helps to achieve a two-way balance between the cost of the core material and the core performance.

[0046] In a third aspect, an embodiment of the present application provides a device for determining a magnetic core removal volume, comprising:

[0047] An acquisition module, used to obtain magnetic flux distribution information inside the magnetic core;

[0048] A first determination module is used to determine the area of ​​the magnetic core to be optimized according to the magnetic flux distribution information, and the area to be optimized is an area in the magnetic core where the magnetic flux density is less than a preset density threshold;

[0049] A second determination module, for the area to be optimized, is used to determine the performance index and the cost of the magnetic core corresponding to each resection volume;

[0050] As a module, it is used to take each resection volume corresponding to when the performance index is greater than a preset performance threshold and the magnetic core cost is less than a preset cost threshold as a set of volumes to be resected in the area to be optimized.

[0051] The functions or modules included in the device provided in the embodiments of the present application can be used to execute the methods described in the above embodiments, and therefore also have the beneficial effects in the above embodiments. Please refer to the above for the specific beneficial effects, which will not be repeated here.

[0052] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising a processor and a memory, wherein the processor and the memory are interconnected, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute a method as described in any of the above embodiments.

[0053] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program includes program instructions, and when the program instructions are executed by a processor, the processor executes the method described in any of the above embodiments.

[0054] The electronic device and readable storage medium in the embodiments of the present application also have the beneficial effects in the above embodiments because their processors can be used to execute the methods described in the above embodiments. Please refer to the above for the specific beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0056] Figure 1is a schematic flow chart of a method for determining a magnetic core removal volume provided in an embodiment of the present application;

[0057] Figure 2 1 is a top view and a side view of an E-type magnetic core in an embodiment of the present application, wherein each shaded area in the figure is an area to be optimized;

[0058] Figure 3 is another flow chart of the method for determining the magnetic core removal volume provided in an embodiment of the present application;

[0059] Figure 4 It is a coordinate relationship diagram between the removal ratio of the magnetic core in the area to be optimized and the magnetic core loss in the embodiment of the present application;

[0060] Figure 5 is a structural schematic diagram of a magnetic core removal volume determination device provided in an embodiment of the present application;

[0061] Figure 6 is a top view of a magnetic core provided in an embodiment of the present application;

[0062] Figure 7 is a schematic diagram of the three-dimensional structure of the magnetic core provided in an embodiment of the present application;

[0063] Figure 8 It is a schematic diagram of the circuit structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. 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 optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0066] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0067] Magnetic devices such as planar transformers and planar inductors have been widely used in switching power supplies and other equipment in recent years due to their advantages of small size, light weight, and compact structure. Planar magnetic cores are the key components with larger volume in magnetic devices. Therefore, how to design planar magnetic cores with higher efficiency, smaller volume, and lower cost is crucial to achieve miniaturization, high power density, and high efficiency of magnetic devices.

[0068] Although traditional planar magnetic cores (such as EE cores, EI cores, EQ cores, etc.) meet the use requirements of magnetic core devices to a certain extent, there are still some unevenness in the magnetic flux distribution. This unevenness in the magnetic flux distribution not only affects the utilization efficiency and performance of the magnetic core, but also increases the material cost and weight of the magnetic core.

[0069] In order to effectively reduce the overall cost of the magnetic core without sacrificing its performance, the present invention provides a method, device, equipment and storage medium for determining the resection volume of the magnetic core. The method first obtains the magnetic flux distribution information inside the magnetic core, and takes the area where the magnetic flux density is less than the preset density threshold (that is, the magnetic flux is relatively small) as the area to be optimized, thereby screening out the area that can be optimized in the magnetic core, and then determines the magnetic core performance and magnetic core cost corresponding to different resection volumes for the area to be optimized, and takes each resection volume corresponding to the performance index greater than the preset performance threshold and the magnetic core cost less than the preset cost threshold as the volume set to be resected in the area to be optimized. The volume set to be resected represents a combination of resection volumes that can both guarantee the performance of the magnetic core and significantly reduce the cost of the magnetic core. Therefore, after any resection volume in the volume set to be resected is resected, the material cost of the magnetic core can be reduced while ensuring the performance of the magnetic core. Furthermore, this solution also calculates the optimization index of the magnetic core under different resection volumes based on the performance indicators and the core cost of the magnetic core, so as to obtain the target resection volume corresponding to the highest optimization index. By resecting the target resection volume corresponding to the area to be optimized, the resected magnetic core can be obtained. The resected magnetic core can maximize the optimization of the core performance while reducing the cost of the magnetic core, thereby achieving the best balance between the core cost and the core performance.

[0070] See also Figure 1 , Figure 1It is a flow chart of a method for determining a core resection volume provided in an embodiment of the present application, wherein the executor of the method may be an electronic device, optionally, the electronic device may be a computer, a server, etc. The electronic device may include a memory and a processor, wherein the memory is used to store computer programs or instructions, and the processor will load the executable files corresponding to the processes of one or more executable programs into the memory in accordance with preset instructions, and the processor will run the executable program stored in the memory, thereby executing the method steps in any embodiment of the present application.

[0071] The method comprises the following steps:

[0072] S101, obtaining magnetic flux distribution information inside the magnetic core;

[0073] Specifically, the magnetic flux distribution information can be obtained in various ways, for example, it can be simulated by finite element analysis software (such as Ansys Maxwell, etc.) to intuitively and accurately obtain the magnetic flux density distribution inside the magnetic core. In addition, the magnetic flux distribution of the magnetic core can also be obtained by experimental measurement or theoretical calculation. For example, in some embodiments, the magnetic flux distribution can be calculated based on the magnetic circuit theory and the hysteresis loop of the magnetic core material and through a mathematical model.

[0074] Optionally, the magnetic flux distribution information can be displayed in a visual manner, such as a magnetic flux cloud map, in which the density of the magnetic flux passing through can be represented by the depth of color, for example, the darker the color, the greater the magnetic flux density. The visual display method helps to intuitively understand the density of the magnetic flux in each area of ​​the magnetic core.

[0075] S102, determining a region of the magnetic core to be optimized according to the magnetic flux distribution information, where the region to be optimized is a region in the magnetic core where the magnetic flux density is less than a preset density threshold;

[0076] The preset density threshold may be pre-set, and optionally, those skilled in the art may adjust the preset density threshold according to actual needs. In some embodiments, the average magnetic flux density of the magnetic core may be calculated first, and then the product of the preset percentage and the average magnetic flux density may be used as the preset density threshold, and optionally, the value of the preset percentage may be adjusted.

[0077] Based on the magnetic flux distribution information and the preset density threshold, the area in the magnetic core where the magnetic flux density is lower than the preset density threshold can be obtained and used as the area to be optimized. It can be understood that the area to be optimized is usually a part with smaller magnetic flux and lower utilization rate, which can be used as the object of optimization.

[0078] It should be noted that, depending on the characteristics of the core type, shape, material, etc., and the preset density threshold setting, there may be one or more areas to be optimized in the core, for example, Figure 2 Take the top view and side view of the E-type magnetic core shown as an example. Figure 2 Each shaded area in the figure can be used as an area to be optimized. In addition, when there are multiple areas to be optimized, the preset density threshold corresponding to each area to be optimized can be the same or different, and those skilled in the art can set it according to actual conditions.

[0079] S103, determining the performance index and the cost of the magnetic core corresponding to each cut-off volume for the area to be optimized;

[0080] The performance index of the magnetic core may include, but is not limited to, one or more of the core loss, the core efficiency, and the core temperature rise. For example, in one embodiment, the performance index of the magnetic core may only include the core loss, and in another embodiment, the performance index of the magnetic core may include the core loss and the core efficiency. The core cost generally includes the material cost of the core, and in addition, the core cost may also include the processing cost of the core, etc.

[0081] Specifically, for each area to be optimized, the volume of the area to be optimized can be used as the maximum resection volume, and the electronic device can predict the core performance indicators and core costs corresponding to different resection ratios of the area to be optimized between 0-100%. It can be understood that when the resection ratio is 100%, the corresponding resection volume is the volume size of the area to be optimized. In this embodiment, the electronic device can evaluate the impact of different resection ratios on the performance indicators and core costs of the core by predicting different resection ratios of the area to be optimized.

[0082] S104 , taking each resection volume corresponding to when the performance index is greater than a preset performance threshold and the magnetic core cost is less than a preset cost threshold as a set of volumes to be resected in the area to be optimized.

[0083] The preset performance threshold and the preset cost threshold may be pre-set, and optionally, those skilled in the art may adjust the preset performance threshold and the preset cost threshold according to actual needs. It is understandable that when there are multiple performance indicators, each performance indicator has a corresponding preset performance threshold.

[0084] After obtaining the magnetic core performance indicators and magnetic core costs corresponding to different resection ratios through the above steps, the magnetic core performance indicators and magnetic core costs corresponding to different resection ratios can be compared with the preset performance threshold and the preset cost threshold respectively, so as to screen out the resection volumes with performance indicators greater than the preset performance threshold and magnetic core costs less than the preset cost threshold, and use them as the set of volumes to be resected. It can be understood that the set of volumes to be resected includes multiple volumes to be resected, and the set of volumes to be resected can form a continuous volume interval. For example, in some embodiments, the volume to be resected can be the volume interval corresponding to the resection ratio of the area to be optimized between 20% and 60%.

[0085] After obtaining the set of volumes to be removed, the operator can select any volume to be removed from the set for removal, thereby obtaining the removed magnetic core. The removed magnetic core can reduce the material cost of the magnetic core while ensuring the performance of the magnetic core, thereby ensuring a balance between the cost and performance of the magnetic core.

[0086] In this embodiment, the regions with magnetic flux density less than a preset density threshold (i.e., relatively small magnetic flux) are first selected as regions to be optimized, thereby screening out regions that can be optimized in the magnetic core. Then, for each region to be optimized, each resection volume corresponding to a performance index greater than a preset performance threshold and a magnetic core cost less than a preset cost threshold is selected as a volume set to be resected in the region to be optimized. The volume set to be resected represents a combination of resection volumes that can both ensure the performance of the magnetic core and reduce the cost of the magnetic core. Therefore, after any volume to be resected in the volume set to be resected is resected, the material cost and weight of the magnetic core can be reduced while ensuring the performance of the magnetic core.

[0087] In some embodiments, the preset performance threshold needs to be greater than or equal to the performance index of the magnetic core before the magnetic core is cut off. In this way, it can be ensured that the performance index of the magnetic core after being cut off will not be lower than the performance index before being cut off, which helps to reduce the cost and weight of the magnetic core material while better ensuring the performance of the magnetic core.

[0088] See also Figure 3 In some embodiments, after executing step S104, the following steps are further performed:

[0089] S105, determining an optimization index of the magnetic core under each volume to be removed based on the magnetic core performance index and magnetic core cost corresponding to each volume to be removed;

[0090] In this embodiment, the optimization index of the magnetic core can represent a comprehensive index of the performance and cost-effectiveness of the magnetic core, and is used to characterize the degree of optimization of the magnetic core under different resection volumes. Optionally, the degree of optimization of the magnetic core under different resection volumes can be calculated by constructing a machine learning model or using a multi-objective optimization algorithm.

[0091] S106: The volume to be resected corresponding to the maximum optimization index is used as the target resection volume.

[0092] When the optimization index of the magnetic core is relatively small, the optimization degree of the magnetic core is relatively low, and when the optimization index of the magnetic core is relatively large, the optimization degree of the magnetic core is relatively high. Therefore, by comparing the optimization indexes of the magnetic core under different resection volumes, the volume to be resected corresponding to the maximum optimization index can be used as the target resection volume (optimal resection volume).

[0093] In this embodiment, by calculating the optimization index of the magnetic core under each volume to be resected, the target resection volume corresponding to the highest optimization index is obtained. The magnetic core corresponding to the target resection volume has the highest degree of optimization. After obtaining the target resection volumes corresponding to each area to be optimized, the magnetic core after resection can be obtained by resecting each target resection volume. The magnetic core after resection can maximize the optimization of the core performance while reducing the cost of the core, thereby achieving the best balance between the core cost and the core performance.

[0094] In some embodiments, the optimization index may be calculated by the following formula:

[0095] in:

[0096] V is the volume to be resected;

[0097] n is the number of performance indicators;

[0098] λ i is the weight coefficient of the i-th performance indicator, satisfying

[0099] f i (V) is the quantitative value of the i-th performance indicator;

[0100] δ i is the nonlinear adjustment factor of the i-th performance indicator;

[0101] β is the weight coefficient of the core cost;

[0102] g(V) is the quantified value of the core cost;

[0103] θ is the nonlinear adjustment factor of the core cost;

[0104] P (V) It is the optimization index of the core when the volume to be removed is V.

[0105] Specifically, the performance indicators may include indicators such as core loss, core efficiency, and core temperature rise. For example, in one embodiment, λ1 is the weight coefficient of core loss, δ1 is the nonlinear adjustment factor of core loss, f1(V) is the quantified value of core loss, λ2 is the weight coefficient of core efficiency, δ2 is the nonlinear adjustment factor of core loss, f2(V) is the quantified value of core efficiency, λ3 is the weight coefficient of core temperature rise, δ3 is the nonlinear adjustment factor of core loss, and f3(V) is the quantified value of core temperature rise, wherein λ1+λ2+λ3=1.

[0106] The weight coefficient λ of each performance index i , nonlinear adjustment factor δ of each performance index i , the weight coefficient β of the core cost, the nonlinear adjustment factor θ of the core cost, which can be set and adjusted by those skilled in the art according to actual needs. For example, the weight coefficient λ for each performance indicator i , and the weight coefficient β of the core cost, the importance of each performance indicator and cost factor can be evaluated by constructing an evaluation model or using data analysis techniques (such as regression analysis, principal component analysis, etc.), and the corresponding weight coefficients can be given. For the nonlinear adjustment factor δi of each performance indicator and the nonlinear adjustment factor θ of the core cost, an optimization algorithm can be used to determine the optimal nonlinear adjustment factor, or, by trying different nonlinear adjustment factor values ​​and observing their impact on the optimization index, the optimal nonlinear adjustment factor can be determined through multiple iterations and adjustments.

[0107] After the electronic device calculates the performance index and the core cost of the magnetic core corresponding to each resection volume in step S103, each performance index and the core cost can be normalized or standardized to obtain the quantitative value f of each core performance. i By substituting the quantified value of the core cost g(V) into the optimization index formula, the optimization index of the core under each cut-off volume can be accurately obtained.

[0108] For example, taking the performance indicators including core loss and core efficiency as an example, the weight coefficient of core loss λ1=0.7, the weight coefficient of core efficiency λ2=0.3, the nonlinear adjustment factor of core loss δ1=1, the nonlinear adjustment factor of core loss δ2=2, the weight coefficient of core cost β=0.5, and the nonlinear adjustment factor of core cost θ=1.5.

[0109] When the cut volume is V1, the quantified value of the core loss f1(V1) = 0.15, the quantified value of the core efficiency f2(V1) = 0.95, and the quantified value of the core cost g(V1) = 0.4; the optimization index calculated at this time is:

[0110]

[0111] When the cut volume is V2, the quantified value of the core loss f1(V2) = 0.25, the quantified value of the core efficiency f2(V2) = 0.92, and the quantified value of the core cost g(V2) = 0.6; the optimization index calculated at this time is:

[0112]

[0113] By comparing P (V1) and P (V2) , it can be concluded that when the resection volume is V2, the corresponding optimization index is higher and the overall performance of the core is better. Therefore, after obtaining the optimization index of the core under each resection volume in the above manner, the optimization index with the highest value can be obtained by comparing the optimization indexes. At this time, the corresponding resection area is the target resection area.

[0114] In this embodiment, the optimization index formula ensures the comprehensiveness and reliability of the evaluation results by integrating multiple performance indicators and core costs of the magnetic core. By introducing nonlinear factors, it can more accurately reflect the nonlinear relationship between different performance indicators and core costs, thereby ensuring the accuracy of the optimization index.

[0115] In some embodiments, the performance index of the magnetic core corresponding to each resection volume is determined by the following steps:

[0116] A1. Construct a three-dimensional model of the magnetic core;

[0117] In some embodiments, the electronic device can build a three-dimensional model of the magnetic core through a preset modeling software (such as SolidWorks, Creo, etc.). During the construction process, the operator completes the construction of the three-dimensional model of the magnetic core by inputting the size of the magnetic core and the properties of the material (such as magnetic permeability, resistivity, etc.).

[0118] In other embodiments, the three-dimensional model of the magnetic core may also be directly constructed in simulation software (such as ANSYS Maxwell, ROBOGUIDE).

[0119] A2. Based on the three-dimensional model and preset simulation parameters, the performance indicators of the magnetic core corresponding to each cut-off volume are obtained through simulation analysis.

[0120] Optionally, the simulation parameters may include operating current, magnetic field strength, resection volume and other parameters. Those skilled in the art may set or adjust these parameters according to actual needs. After the three-dimensional model of the magnetic core is constructed, the constructed three-dimensional model is imported into the simulation software, and the performance indicators such as core loss, efficiency, temperature rise and the like of the magnetic core under different resection volumes can be obtained through simulation analysis. For example, Figure 4The coordinate relationship diagram between different core removal volumes (removal ratios) and core loss is shown, from which the influence of different core removal volumes on core loss can be intuitively demonstrated. It can be understood that the coordinate relationship diagram between different core removal volumes and core efficiency, as well as the coordinate relationship diagram between different core removal volumes and core temperature rise can also be obtained through simulation software.

[0121] In this embodiment, relatively accurate core performance indicators can be obtained through simulation analysis, ensuring the accuracy and reliability of various performance indicator data, with low time cost, which helps to improve the optimization efficiency of the core.

[0122] It is understandable that, in other embodiments, the performance index of the magnetic core under different removal volumes may also be determined by experimental testing, theoretical calculation, finite element analysis and other methods.

[0123] In some embodiments, the electronic device performs the following steps in the process of determining the magnetic core cost corresponding to each resection volume:

[0124] B1. Obtain the material properties and unit price of the magnetic core;

[0125] Exemplarily, the material properties of the magnetic core may include one or more of the material hardness and brittleness of the magnetic core, the thermal stability and chemical stability of the magnetic core, the density of the magnetic core, and the thermal expansion coefficient of the magnetic core. These material properties usually affect the difficulty of the magnetic core processing process and affect the processing cost of the magnetic core. Optionally, these material properties can be pre-set in the electronic device, or can be received by the electronic device through input.

[0126] B2. Obtaining the original volume of the magnetic core before the magnetic core is removed, and characteristic information of each removed volume, wherein the characteristic information includes the removal size and the removal contour shape;

[0127] Optionally, the original volume of the magnetic core before the magnetic core is cut off may be obtained based on basic dimensions of the magnetic core (such as length, width, height, etc.) and a magnetic core volume calculation formula.

[0128] Data such as the cut size and the cut contour shape can be extracted from the cut volume. The size of the cut size and the complexity of the cut contour shape usually affect the difficulty of the core processing process and affect the core processing cost.

[0129] B3, determining the effective core volume after core removal based on the original core volume and each removal volume;

[0130] When the original core volume and the cut-off volume are obtained, the effective core volume corresponding to each cut-off volume can be obtained by subtracting the cut-off volume from the original volume.

[0131] B4. Determine the material cost of the core based on the effective core volume and material unit price;

[0132] Specifically, the material cost of the magnetic core corresponding to each cut-off volume can be obtained by multiplying the effective magnetic core volume corresponding to each cut-off volume by the material unit price.

[0133] B5. Determine the processing cost of the magnetic core based on the material properties and characteristic information;

[0134] The material properties of the core and the characteristic information of the cut volume will affect its processing cost. For example, the greater the hardness of the core, the higher the processing cost of the core, and the more complex the shape of the cut volume, the higher the processing cost of the core. Therefore, by comprehensively considering the material properties and characteristic information of the core, the processing cost of the core can be more accurately evaluated.

[0135] B6. Determine the core cost corresponding to the cut-off volume based on material cost and processing cost.

[0136] After the material cost and processing cost of the magnetic core are obtained through the above steps, the material cost and processing cost of the magnetic core are added together to obtain the magnetic core cost.

[0137] In this embodiment, the core cost includes material cost and processing cost. The cost structure in the material use and processing process is deeply analyzed, and the material cost and processing cost of the core are accurately calculated, so as to improve the production efficiency of the core and effectively control the overall cost. This helps to minimize the core cost while optimizing the core performance and improve the market competitiveness of the product.

[0138] In some embodiments, during the process of executing step B5, the following sub-steps are also executed:

[0139] B51. Based on material properties and characteristic information, use the prediction model to predict the energy loss and processing time of the processing equipment during the magnetic core processing;

[0140] The processing equipment may be mechanical equipment used for magnetic core processing, such as a laser cutting machine, a CNC machine tool or a pressing machine, etc. During the process of magnetic core cutting or pressing, the processing equipment will generate a certain amount of energy loss. It is understandable that under different material properties and characteristic information, the processing time of the magnetic core is different, and the processing equipment generates different energy losses. Therefore, the material properties and characteristic information of the magnetic core are key factors affecting the energy loss and processing time of the processing equipment.

[0141] The prediction model can be a machine learning model, such as a support vector machine or a neural network model. The prediction model can be trained based on multiple sets of historical data samples. For example, each set of historical data samples includes historical material characteristics, historical feature information, and corresponding historical energy loss and processing time. After the prediction model training is completed, the prediction model can be used to predict the energy loss and processing time during the magnetic core processing under different resection volumes. Specifically, the material properties and feature information data of the magnetic core are input into the trained prediction model, and the corresponding energy loss and processing cost can be output.

[0142] B52. Determine the processing cost of the magnetic core based on energy loss and processing time.

[0143] Specifically, energy loss and processing time are key factors reflecting the processing cost of the magnetic core. Therefore, this embodiment predicts the energy loss and processing time in the magnetic core processing process under different resection volumes, and comprehensively evaluates the processing cost of the magnetic core by energy loss and processing time. This can achieve refined cost management and optimization, help to accurately predict and control processing costs, and thus improve product competitiveness.

[0144] Alternatively, the processing cost of the magnetic core under different removal volumes can be calculated by the following formula:

[0145] C (v) =ω1*E (v) +ω2*T (v) ;

[0146] Where V is the resection volume, E (v) and T (v) are the energy loss and processing time when the removal volume is V, C (v) is the processing cost of the magnetic core when the cut volume is V, ω1 is the weight factor of energy loss, ω2 is the weight factor of processing cost, the values ​​of ω1 and ω2 can be set and adjusted according to actual needs. Optionally, the weight factors of energy consumption and processing time can be set according to market conditions, equipment depreciation and other factors.

[0147] See also Figure 5 and Figure 6 The embodiment of the present application further provides a magnetic core 10, which is obtained by using the magnetic core resection volume determination method in any of the above embodiments.

[0148] Specifically, the magnetic core 10 may be an E-type magnetic core, an I-type magnetic core, a Q-type magnetic core, or the like.

[0149] Since the magnetic core 10 is obtained by the method described in the above embodiment, the magnetic core can optimize the magnetic core performance to a great extent, reduce the magnetic core cost and weight, and achieve a better balance between the magnetic core cost and the magnetic core performance.

[0150] In some embodiments, the magnetic core 10 includes a base plate 11, two side columns 12 and a middle column 13, the two side columns 12 are respectively connected to the opposite ends of the base plate 11 along the first direction X, the middle column 13 is connected to the base plate 11 and is located between the two side columns 12, the middle column 13 and the two side columns 12 are all protruding from the same side of the base plate 11, and a notch 101 is opened at at least one end of the base plate 11 along the second direction Y, and the two notches 101 are respectively located on the sides of the middle column 13, wherein the second direction Y is perpendicular to the first direction X.

[0151] Specifically, the magnetic core 10 can be applied to magnetic devices such as inductors, transformers, and mutual inductors. Figure 5 As shown, for the convenience of explanation, a first direction X and a second direction Y perpendicular to each other are defined in the figure. Optionally, the first direction X may be the length direction of the bottom plate 11 , and the second direction Y may be the width direction of the bottom plate 11 .

[0152] The magnetic core 10 may include an integrally formed bottom plate 11, two side columns 12 and a middle column 13, wherein the middle column 13 is located between the two side columns 12, so that the bottom plate 11, the two side columns 12 and the middle column 13 together form an E-shaped magnetic core. The middle column 13 may be used to support a winding in a magnetic device, and the winding may be wound on the middle column 13. Optionally, the winding may be a printed circuit board winding (PCB winding), a multi-strand winding or a Litz wire winding, etc.

[0153] like Figure 5 and Figure 6 As shown, a notch 101 is provided at at least one end of the bottom plate 11 of the magnetic core 10 along the second direction Y. The notch 101 is provided at a portion of the bottom plate 11 with less magnetic flux. Compared with the traditional E-sheet magnetic core, in this embodiment, the portion of the bottom plate 11 with less magnetic flux along at least one end of the second direction Y is cut off to form the notch 101, which can reduce the materials used in the E-type magnetic core 10, reduce the weight of the E-type magnetic core 10, and reduce the cost of the E-type magnetic core 10 without affecting the overall performance of the E-type magnetic core 10.

[0154] It should be understood that when the magnetic core 10 is assembled with the PCB winding, the provision of the notch 101 on the bottom plate 11 can increase the contact area between the PCB winding and the air, improve the heat dissipation performance of the PCB winding, and reduce the temperature of the PCB winding.

[0155] In addition, when the magnetic core 10 is assembled with the PCB winding, the vias on the PCB winding can be exposed through the notch 101, so there is no need to worry about the vias contacting the E-type magnetic core 10 and using a more expensive resin plugging process. As a result, the PCB winding can use a relatively low-cost green oil plugging process to seal the vias, thereby reducing the process cost of the PCB winding and the overall cost of the magnetic device.

[0156] In some embodiments, Figure 5 As shown, notches 101 are provided at opposite ends of the bottom plate 11 along the second direction Y. The two notches 101 are respectively located at opposite ends of the middle column 13, which helps to cut off more core volume while ensuring the overall performance of the core, reduce the weight of the core, and reduce the cost of the core.

[0157] In some embodiments, the shape of the notch 101 can be regular or irregular. For example, the notch 101 can be a trapezoidal notch or an arc-shaped notch. The shape of the notch 101 can be roughly compatible with the shape formed by the areas with less magnetic flux at the opposite ends of the base plate 11 along the second direction Y, so that the areas with less magnetic flux can be cut off to the greatest extent, thereby saving the cost of the core material to the greatest extent and avoiding the impact on the performance of the core after cutting.

[0158] The center column 13 can be a square structure (see Figure 3 ), such as a square or rectangular structure, in addition, the middle column 13 can also be other shapes, such as a cylindrical shape (see Figure 4 ). The area with less magnetic flux at the two opposite ends of the bottom plate 11 along the second direction Y is a roughly trapezoidal or arc-shaped structure. Therefore, after the area with less magnetic flux at the two opposite ends of the bottom plate 11 along the second direction Y is cut off, a roughly trapezoidal gap or an arc-shaped gap is formed. Optionally, the gap 101 is a roughly isosceles trapezoidal gap.

[0159] It is understandable that the present embodiment does not require the shape of the notch 101 to be a very standard trapezoidal structure or arc-shaped structure. For example, in some embodiments, the upper and lower bases of the trapezoidal notch may be straight lines, and the side lines of the trapezoidal notch may be transitioned by arcs.

[0160] like Figure 5 As shown, in some embodiments, the length of the middle column 13 along the first direction X is a, the vertical distance between the inner sides of the two side columns 12 is b, the length of the middle column 13 along the second direction Y is d1, and the length of the bottom plate 11 along the second direction Y is d2; wherein the area of ​​the notch 101 is between (0.1 and 0.15)*(a+b)*(d2-d1).

[0161] like Figure 5As shown, the area of ​​the notch 101 is the area of ​​the cut-off portion in the region with less magnetic flux at the two opposite ends of the bottom plate 11 along the second direction Y. When the area of ​​the notch is between (0.05 and 0.15)*(a+b)*(d2-d1), such as the area of ​​the notch 101 can be 0.05*(a+b)*(d2-d1), 0.12*(a+b)*(d2-d1), 0.15*(a+b)*(d2-d1), etc., within this range, the cost of the core material can be reduced to a great extent without causing significant core loss, which helps to achieve a two-way balance between the cost of the core material and the core performance.

[0162] In specific implementation, the interval where the gap area is located can be determined by the following methods:

[0163] First, determine the maximum resection area (area to be optimized) of the area with less magnetic flux at the two opposite ends of the bottom plate 11 along the second direction Y. Specifically, the upper bottom resection length has a as the maximum value, the lower bottom resection length has b as the maximum value, and the height has 0.5*(d2-d1) as the maximum value. The connection of the hypotenuse can be a straight line or an arc. This is the maximum resection area, that is, the maximum resection area is 0.25*(a+b)*(d2-d1).

[0164] Then, the optimal resection area interval between 0 and the maximum resection area (corresponding to the area interval of the trapezoidal notch) is determined by simulation analysis or experiment. Specifically, Figure 4 In, from Figure 4 It can be seen that when the core cutting ratio is between 20% and 60%, it will not cause significant loss to the core. Therefore, 20% to 60% of the maximum cutting area can be used as the optimal cutting area interval. In other words, (0.2 to 0.6)*0.25*(a+b)*(d2-d1) can be used as the optimal cutting area interval. When the cutting area of ​​the area with less magnetic flux at the opposite ends of the bottom plate 11 along the second direction Y is controlled within this interval, both the cost-effectiveness of the core and the overall performance of the core are taken into consideration, and a two-way balance between the core material cost and the core performance can be achieved. In other words, if too little is cut off, it will not be conducive to significantly reducing the cost of the E-type magnetic core 10. If too much is cut off, it will easily lead to an increase in core loss. Therefore, in this embodiment, the cut-off area of ​​the area with less magnetic flux at the opposite ends of the bottom plate 11 along the second direction Y is controlled to be between (0.2~0.6)*0.25*(a+b)*(d2-d1), that is, when the area of ​​the notch 101 is between (0.05~0.15)*(a+b)*(d2-d1), it can greatly reduce the cost of the core and reduce the weight of the core without causing obvious core loss.

[0165] It is understandable that the shape of the cutout notch 101 can be regular or irregular, and the above technical effect can be achieved as long as the area of ​​the notch 101 is in the range of (0.05 to 0.15)*(a+b)*(d2-d1).

[0166] In some embodiments, in order to further reduce the material cost and weight of the magnetic core, the area of ​​the notch 101 may be between (0.1 and 0.15)*(a+b)*(d2-d1).

[0167] like Figure 4 As shown, when the core cutting ratio is 40%, the core loss is the lowest, and in the process of gradually increasing the core cutting ratio from 40% to 60%, the core loss increases relatively slowly, and does not lead to a significant increase in the core loss. Therefore, 40% to 60% of the maximum cutting area can be further taken as the interval where the optimal cutting area is located, that is, (0.4 to 0.6)*0.25*(a+b)*(d2-d1)=(0.1 to 0.15)*(a+b)*(d2-d1) can be taken as the interval where the optimal cutting area is located. In this area, while ensuring the core loss, a larger core area can be cut as much as possible, thereby minimizing the core cost and weight.

[0168] See also Figure 7 The embodiment of the present application further provides a core resection volume determination device 500, which is used to execute the method in any of the above embodiments. Specifically, the core resection volume determination device 500 in the embodiment of the present application includes an acquisition module 501, a first determination module 502, a second determination module 503 and a serving module 504, wherein:

[0169] An acquisition module 501 is used to acquire magnetic flux distribution information inside the magnetic core;

[0170] A first determination module 502 is used to determine a region of the magnetic core to be optimized according to the magnetic flux distribution information, wherein the region to be optimized is a region in the magnetic core where the magnetic flux density is less than a preset density threshold;

[0171] The second determination module 503 is used to determine the performance index and the cost of the magnetic core corresponding to each resection volume for the area to be optimized;

[0172] As module 504, each resection volume corresponding to when the performance index is greater than a preset performance threshold and the magnetic core cost is less than a preset cost threshold is used as a set of volumes to be resected in the area to be optimized.

[0173] In some embodiments, the device further includes a third determination module and a target resection volume determination unit; wherein:

[0174] A third determination module is used to determine the optimization index of the magnetic core under each volume to be removed based on the magnetic core performance index and the magnetic core cost corresponding to each volume to be removed;

[0175] The target resection volume determination unit is used to take the to-be-resected volume corresponding to the maximum optimization index as the target resection volume.

[0176] In some embodiments, the second determining module 503 is further configured to:

[0177] constructing a three-dimensional model of the magnetic core;

[0178] Based on the three-dimensional model and preset simulation parameters, performance indicators of the magnetic core corresponding to each cut-off volume are obtained through simulation analysis.

[0179] In some implementations, the second determining module 503 is further configured to:

[0180] Obtaining material properties and unit price of the magnetic core;

[0181] Acquire the original volume of the magnetic core before the magnetic core is removed, and characteristic information of each removed volume, wherein the characteristic information includes a removal size and a removal contour shape;

[0182] Determine the effective magnetic core volume after the magnetic core is removed according to the original magnetic core volume and each removed volume;

[0183] Determine the material cost of the magnetic core according to the effective magnetic core volume and the unit price of the material;

[0184] Determining the processing cost of the magnetic core according to the material properties and the characteristic information;

[0185] The magnetic core cost corresponding to the cut-off volume is determined according to the material cost and the processing cost.

[0186] In some implementations, the second determining module 503 is further configured to:

[0187] Based on the material properties and the characteristic information, using a prediction model to predict the energy loss and processing time of a processing equipment during the processing of the magnetic core;

[0188] The processing cost of the magnetic core is determined according to the energy loss and the processing time.

[0189] In some embodiments, the acquisition module 501 is further used to: acquire the magnetic flux distribution information inside the magnetic core through simulation analysis.

[0190] The functions or modules included in the device provided in the embodiments of the present application can be used to execute the method described in the above method embodiments. The specific implementation thereof can refer to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0191] See also Figure 8 , Figure 8 A structural schematic diagram of an electronic device 600 provided in an embodiment of the present application, the electronic device 600 may include a memory 602 and a processor 601, wherein, for example, through the electronic device, the memory 602 is used to store computer programs or instructions, and the processor 601 is used to execute the computer programs or instructions stored in the memory 602, so that the electronic device 600 implements the steps involved in the method for determining the core resection volume provided in the embodiment of the present application.

[0192] The processor 601 and the memory 602 may be connected via a bus or other means. Figure 8 The example of connecting through bus is taken in the following.

[0193] The memory 602, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the method for assisting in placing the calibration tool in the embodiment of the present application. The processor 601 executes various functional applications and data processing of the electronic device 600 by running the non-volatile software programs, instructions and modules stored in the memory 602, that is, implements the method for determining the core removal volume provided in the above embodiment.

[0194] The memory 602 may include a high-speed random access memory 602, and may also include a non-volatile memory 602, such as at least one disk memory 602, a flash memory device, or other non-volatile solid-state memory 602. In some embodiments, the memory 602 may include a memory 602 remotely located relative to the processor 601, and these remote memories 602 may be connected to the processor 601 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0195] The program instructions / modules are stored in the memory 602 , and when executed by one or more processors 601 , the steps in the core resection volume determination method in any of the above method embodiments are performed.

[0196] In addition, the electronic device 600 may also include a power supply for supplying power to each component. Preferably, the power supply may be logically connected to the processor 601 through a power management system, so that the power management system can manage charging, discharging, power consumption and other functions. The power supply may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

[0197] The embodiment of the present application also provides a computer-readable storage medium, on which some instructions are stored. When these instructions are called and executed, the early warning device can perform the functions involved in the early warning device in the above method embodiment and any possible design of the method embodiment. In the embodiment of the present application, the readable storage medium is not limited, for example, it can be RAM (random-access memory), ROM (read-on ly memory), etc.

[0198] The above described device or equipment embodiments are merely illustrative, wherein the unit modules described as separate components may or may not be physically separated, and the components displayed as module units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network module units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0199] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application is described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining a magnetic core removal volume, characterized in that: include: Obtain the magnetic flux distribution information inside the magnetic core; Determine a region of the magnetic core to be optimized according to the magnetic flux distribution information, wherein the region to be optimized is a region in the magnetic core where the magnetic flux density is less than a preset density threshold; For the area to be optimized, determining the performance index and the cost of the magnetic core corresponding to each cut-off volume; Each resection volume corresponding to when the performance index is greater than a preset performance threshold and the magnetic core cost is less than a preset cost threshold is used as a set of volumes to be resected in the area to be optimized.

2. The method according to claim 1, characterized in that The method further comprises: Determining the optimization index of the magnetic core under each volume to be removed based on the magnetic core performance index and the magnetic core cost corresponding to each volume to be removed; The volume to be resected corresponding to the maximum optimization index is used as the target resection volume.

3. The method according to claim 2, characterized in that The optimization index can be calculated by the following formula: Where V is the volume to be removed, n is the number of performance indicators, and λ i is the weight coefficient of the i-th performance indicator, f i (V) is the quantitative value of the i-th performance indicator, δi is the nonlinear adjustment factor of the i-th performance indicator, β is the weight coefficient of the core cost, g(V) is the quantitative value of the core cost, θ is the nonlinear adjustment factor of the core cost, P (V) It is the optimization index of the core when the volume to be removed is V.

4. The method according to claim 1, characterized in that The step of determining the performance index of the magnetic core corresponding to each resection volume includes: constructing a three-dimensional model of the magnetic core; Based on the three-dimensional model and preset simulation parameters, performance indicators of the magnetic core corresponding to each cut-off volume are obtained through simulation analysis.

5. The method according to claim 1, characterized in that The determining of the magnetic core cost corresponding to each cut-off volume includes: Obtaining material properties and unit price of the magnetic core; Acquire the original volume of the magnetic core before the magnetic core is removed, and characteristic information of each removed volume, wherein the characteristic information includes a removal size and a removal contour shape; Determine the effective magnetic core volume after the magnetic core is removed according to the original magnetic core volume and each removed volume; Determine the material cost of the magnetic core according to the effective magnetic core volume and the unit price of the material; Determining the processing cost of the magnetic core according to the material properties and the characteristic information; The magnetic core cost corresponding to the cut-off volume is determined according to the material cost and the processing cost.

6. The method according to claim 5, characterized in that The determining the processing cost of the magnetic core according to the material properties and the characteristic information includes: Based on the material properties and the characteristic information, using a prediction model to predict the energy loss and processing time of a processing equipment during the processing of the magnetic core; The processing cost of the magnetic core is determined according to the energy loss and the processing time.

7. A magnetic core, characterized in that: The method for determining the core removal volume is used to obtain the magnetic core removal volume.

8. The magnetic core according to claim 7, characterized in that: The magnetic core comprises: Base plate; Two side columns, the two side columns are respectively connected to opposite ends of the bottom plate along the first direction; A middle column, the middle column is connected to the bottom plate and is located between the two side columns, the middle column and the two side columns are both protruding from the same side of the bottom plate; A notch is formed at at least one end of the bottom plate along a second direction, and the notch is located at a side of the center column, wherein the second direction is perpendicular to the first direction; The length of the middle column along the first direction is a, the vertical distance between the inner sides of the two side columns is b, the length of the middle column along the second direction is d1, and the length of the bottom plate along the second direction is d2; The area of ​​the notch is between (0.05 and 0.15)*(a+b)*(d2-d1).

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the processor and the memory are connected to each other, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the method according to any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor is enabled to execute the method according to any one of claims 1 to 6.

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