Ultra-thin magnetic integrated transformer implementation method and device for LLC topology

Abstract

The application relates to a super-thin magnetic integrated transformer implementation method and device for an LLC topology, and relates to the technical field of transformers, which comprises the following steps: collecting transformer application requirements; generating a coil specification and a resonant inductance value according to the transformer application requirements; selecting a primary coil, a secondary coil, a winding skeleton, an insulating insert and a magnetic core piece according to the coil specification; generating an air gap depth value in combination with the resonant inductance value and the coil specification; generating gasket installation information according to the air gap depth value; winding the selected primary coil and the secondary coil side by side on the winding skeleton and installing the insulating insert to separate the primary coil and the secondary coil; adjusting a second magnetic column on the magnetic core piece according to the gasket installation information, and installing the preset magnetic core piece. The application has the effect of conveniently using the transformer in a super-thin application occasion.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a method and apparatus for implementing an ultrathin magnetically integrated transformer for LLC topology. Background Technology

[0002] A transformer is a static electrical device that uses the principle of electromagnetic induction to achieve power transmission and voltage transformation without changing the frequency of alternating current. Transformers are crucial and indispensable core equipment in power systems, and typically consist of a secondary coil, a primary coil, and an iron core.

[0003] LLC topology is a circuit structure used in medium-to-high power, high-efficiency switching power supplies. LLC topology includes an isolation transformer for electrical isolation and voltage transformation, and a resonant inductor for generating the resonant frequency. Highly efficient soft switching and voltage regulation are achieved by connecting and mounting a separate resonant inductor to the isolation transformer.

[0004] Since current LLC topologies are generally used in space-sensitive devices such as laptop power adapters and small chargers, and resonant inductors and isolation transformers are two separate components that require additional installation space, they are not convenient for use in ultra-thin applications. Summary of the Invention

[0005] To facilitate the use of transformers in ultra-thin applications, this invention provides a method and apparatus for implementing an ultra-thin magnetically integrated transformer for LLC topology.

[0006] In a first aspect, the present invention provides a method for implementing an ultrathin magnetically integrated transformer for LLC topology, employing the following technical solution:

[0007] A method for implementing an ultrathin magnetically integrated transformer for LLC topology includes:

[0008] S1: Collect transformer application requirements;

[0009] S2: Generate coil specifications and resonant inductance value according to transformer application requirements;

[0010] S3: Select the primary coil, secondary coil, winding frame, insulating insert and magnetic core according to the coil specifications;

[0011] S4: Combine the resonant inductance value with the coil specifications to generate the air gap depth value;

[0012] S5: Generate gasket installation information based on the air gap depth value;

[0013] S6: The selected primary coil and the secondary coil are wound side by side on the winding frame and separated by the insulating insert;

[0014] S7: Adjust the second magnetic post on the magnetic core according to the shim installation information, and install the preset magnetic core.

[0015] By adopting the above technical solutions, collecting transformer application requirements and generating precise coil specifications and resonant inductance values ​​based on those requirements, combined with air gap depth calculation and gasket installation schemes, the precise design and assembly of ultra-thin magnetic integrated transformers are achieved. This ensures a high degree of matching between transformer performance and design requirements. At the same time, through the installation of insulating inserts and adjustment of magnetic core components, the integration and reliability of the product are effectively improved, making it convenient for the transformer to be used in ultra-thin applications.

[0016] Optional methods for generating coil specifications and resonant inductance values ​​include:

[0017] S21: Retrieve application scenarios, load conditions, and target efficiency based on transformer application requirements;

[0018] S22: Determine the scene allowable size, scene reference input voltage, and scene reference output voltage according to the application scenario;

[0019] S23: Calculate the coil turns ratio using the scene reference input voltage and the scene reference output voltage;

[0020] S24: Determine the primary initial specifications by combining the coil turns ratio and the scenario reference input voltage;

[0021] S25: Generate primary selection specifications by combining scene allowable dimensions and primary initial specifications;

[0022] S26: Determine the secondary selection specifications by combining the primary selection specifications and the coil turns ratio;

[0023] S27: Combine the coil turns ratio, scenario reference output voltage, scenario reference input voltage, load conditions and target efficiency to determine the inductance requirement value, and use the primary and secondary selected specifications as the coil specifications, and the inductance requirement value as the resonant inductance value.

[0024] By adopting the above technical solution, and by extracting key parameters such as application scenarios, load conditions, and target efficiency from the transformer application requirements, the coil turns ratio, primary and secondary selection specifications, and resonant inductance value are systematically determined, ensuring the performance adaptability and stability of the transformer under different operating conditions.

[0025] Optional methods for generating the initial selection specifications include:

[0026] S251: Determine the initial specification dimensions and the specification adaptation temperature value based on the primary initial specifications;

[0027] S252: Determine the number of dimensional conformities and dimensional deviations by combining the initial specification dimensions with the scene's permissible dimensions;

[0028] S253: Determine whether the number of dimensional conformities is greater than the preset number of conformity references;

[0029] S254: If yes, then the size selection reference value is generated by combining the size deviation value and the specification adaptation temperature value;

[0030] S255: Sort the size selection reference values ​​from largest to smallest, and take the primary initial specification corresponding to the first size selection reference value as the primary selection specification.

[0031] S256: If not, sort the dimensions from smallest to largest based on the dimensional deviation values, and take the primary initial specification corresponding to the dimensional deviation value with the largest dimensional deviation value as the primary selected specification.

[0032] By adopting the above technical solution, and by comparing the permissible dimensions of the scenario with the initial primary specifications, and combining the judgment mechanism of the number of dimensions that meet the requirements and the deviation value, the primary coil specifications are optimized and selected. This satisfies the size constraints while also taking into account the temperature values ​​that the specifications can adapt to, thereby improving the applicability and thermal performance of the transformer in space-constrained scenarios.

[0033] Optionally, methods for generating size selection reference values ​​include:

[0034] S2541: Determine the estimated temperature value based on the application scenario;

[0035] S2542: Determine the transformer temperature value based on the scene reference input voltage and the scene reference output voltage;

[0036] S2543: Determine the temperature adjustment value by combining the scenario-estimated temperature value and the transformer temperature value;

[0037] S2544: Determine the temperature deviation value by combining the temperature adjustment value and the specification adaptation temperature value;

[0038] S2545: Determine the temperature deviation reference value based on the temperature deviation value;

[0039] S2546: Determine the reference value for dimensional deviation based on the dimensional deviation value;

[0040] S2547: Determine a comprehensive reference value by combining the temperature deviation reference value and the dimensional deviation reference value, and use the comprehensive reference value as the dimensional selection reference value.

[0041] By adopting the above technical solution, by introducing the scenario-estimated temperature value and the transformer temperature value, calculating the temperature adjustment value and the temperature deviation reference value, and combining the size deviation reference value to generate a comprehensive reference value, the optimal size under the influence of multiple parameters is realized, the systematicness and environmental adaptability of coil specification selection are improved, and the stable performance of the transformer under complex working conditions is ensured.

[0042] Optional methods for generating the air gap depth value include:

[0043] S41: Determine the core specifications of the magnetic core component and the number of turns of the primary coil according to the coil specifications;

[0044] S42: Retrieve the magnetic reluctance value and cross-sectional area of ​​the magnetic core based on the core specifications;

[0045] S43: Determine the required magnetic reluctance value based on the resonant inductance value and the number of coil turns;

[0046] S44: Combine the required magnetoresistance value with the core magnetoresistance value to generate the air gap magnetoresistance value;

[0047] S45: Determine the required depth value by combining the air gap reluctance value and the core cross-sectional area, and use the required depth value as the air gap depth value.

[0048] By adopting the above technical solution, the core parameters and the number of turns of the primary coil are obtained through the coil specifications. The required magnetic reluctance value is deduced by combining the resonant inductance value. Then, the air gap magnetic reluctance value and air gap depth value are calculated, thereby quantifying the design of the air gap depth, ensuring the accurate realization of the resonant inductance value, and improving the consistency of the transformer's electrical performance.

[0049] Optionally, methods for generating the air gap magnetoresistance value include:

[0050] S441: Determine the core ratio value based on the core reluctance value and the required reluctance value;

[0051] S442: Determine whether the core ratio value is greater than the preset core reference ratio value;

[0052] S443: If yes, then determine the temperature magnetoresistance effect value based on the temperature adjustment value;

[0053] S444: Determine the core reluctance adjustment value by combining the temperature reluctance influence value and the core reluctance value;

[0054] S445: Calculate the difference between the required reluctance value and the core reluctance adjustment value and use it as the air gap reluctance value;

[0055] S446: If not, calculate the difference between the required magnetic reluctance value and the core magnetic reluctance value and use it as the air gap magnetic reluctance value.

[0056] By adopting the above technical solution, the relationship between the core ratio value and the core reference ratio value is determined, and the influence value of temperature magnetic reluctance is dynamically introduced to correct the core magnetic reluctance value. This improves the accuracy of the air gap magnetic reluctance value calculation, effectively compensates for the influence of temperature on magnetic circuit parameters, and enhances the parameter stability of the transformer under different temperatures.

[0057] Optionally, methods for generating gasket installation information include:

[0058] S51: Determine the core height value according to the core specifications;

[0059] S52: Calculate the difference between the core height value and the air gap depth value and use it as the shim height value;

[0060] S53: Determine the height ratio by combining the shim height value and the magnetic core height value;

[0061] S54: Generate installation location points based on the height ratio value;

[0062] S55: Combine the installation location point with the shim height value and use it as shim installation information.

[0063] By adopting the above technical solution, the gasket height and height ratio are calculated using the magnetic core height and air gap depth values. This generates the installation position point and gasket height value, which serve as the gasket installation information. This achieves precise guidance for gasket installation, ensures the accuracy of the actual air gap depth, and improves the consistency and efficiency of product assembly.

[0064] Optionally, methods for generating installation location points include:

[0065] S541: Determine the height reference ratio and installation reference position based on the core height value;

[0066] S542: Determine whether the height scale value is greater than the height reference scale value;

[0067] S543: If yes, calculate the difference between the height scale value and the height reference scale value and use it as the scale deviation value;

[0068] S544: Determine the position adjustment value based on the proportional deviation value;

[0069] S545: Adjust the installation reference position point based on the position adjustment value to obtain the adjustment position point, and use the adjustment position point as the installation position point;

[0070] S546: If not, the installation reference point will be used as the installation location point.

[0071] By adopting the above technical solution, the installation position is dynamically adjusted by comparing the height ratio value with the height reference ratio value, thus achieving optimized arrangement of the gasket installation position. This effectively avoids installation deviations caused by abnormal height ratios and improves the fit of the magnetic core assembly and the overall structural stability.

[0072] Secondly, the present invention provides an ultrathin magnetically integrated transformer device for LLC topology, employing the following technical solution:

[0073] An ultrathin magnetically integrated transformer device for LLC topology, applied to a method for implementing an ultrathin magnetically integrated transformer for LLC topology as described in any of the first aspects, includes a secondary coil and a primary coil, and further includes:

[0074] The winding frame is used for winding both the secondary coil and the primary coil.

[0075] An insulating insert is disposed on the winding frame for the primary coil to be wound, located between the secondary coil and the primary coil, and has a first through hole;

[0076] The magnetic core is symmetrically arranged on the winding frame and the insulating insert;

[0077] The winding frame includes a winding post for winding the secondary coil and the primary coil, a lower guard plate and an upper guard plate. The lower guard plate has mounting holes for the insulating insert to pass through. Both ends of the lower guard plate are provided with several terminals. The winding post has a second through hole.

[0078] The magnetic core is provided with a first magnetic post, a second magnetic post and a third magnetic post. The first magnetic post passes through the first through hole. The second magnetic post has a concave arc surface on the side close to the first magnetic post and passes through the second through hole. The third magnetic post is located on both sides of the magnetic core.

[0079] The upper guard plate has an arc-shaped protrusion on the side near the second magnetic post for contacting the concave arc surface.

[0080] By adopting the above technical solution, the secondary coil and primary coil are integrated through the winding skeleton, and the insulation insert is used to achieve isolation between the coils. The magnetic core adopts a multi-magnetic column structure and an inward arc surface design, combined with an arc-shaped convex plate to achieve a tight fit. This achieves the ultra-thinness and magnetic integration of the high-frequency transformer, effectively saving installation space, while ensuring efficient magnetic circuit coupling and electrical isolation.

[0081] Optionally, both ends of the lower guard plate are provided with a plurality of wire-laying slots, and the wire-laying slots correspond one-to-one with the wiring terminals.

[0082] By adopting the above technical solution, and by setting a one-to-one correspondence between the wire slot and the terminal block in the lower guard plate, the standardized arrangement and reliable connection of the coil leads are achieved, which improves the assembly convenience and wiring reliability of the transformer, while reducing the impact of external interference on the coil performance.

[0083] In summary, the present invention has at least one of the following beneficial technical effects:

[0084] 1. By collecting transformer application requirements and generating precise coil specifications and resonant inductance values ​​based on those requirements, combined with air gap depth calculation and shim installation scheme, the precise design and assembly of ultra-thin magnetic integrated transformers were achieved, thereby ensuring a high degree of matching between transformer performance and design requirements. At the same time, through the installation of insulation inserts and adjustment of magnetic core components, the integration and reliability of the product were effectively improved, making it convenient for the transformer to be used in ultra-thin applications.

[0085] 2. By extracting key parameters such as application scenarios, load conditions, and target efficiency from transformer application requirements, the coil turns ratio, primary and secondary selection specifications, and resonant inductance value are systematically determined, ensuring the performance adaptability and stability of the transformer under different operating conditions.

[0086] 3. By integrating the secondary and primary coils through the winding frame and using insulating inserts to achieve isolation between the coils, the magnetic core adopts a multi-pillar structure and concave arc surface design, combined with an arc-shaped convex plate to achieve a tight fit, thereby realizing the ultra-thinness and magnetic integration of the high-frequency transformer, effectively saving installation space, while ensuring efficient magnetic circuit coupling and electrical isolation. Attached Figure Description

[0087] Figure 1 This is a schematic diagram of the structure of an ultra-thin magnetic integrated transformer device;

[0088] Figure 2 This is an exploded view of the secondary coil, primary coil, winding frame, and magnetic core components;

[0089] Figure 3 This is an exploded view of the winding frame and the insulating insert;

[0090] Figure 4 This is a flowchart illustrating the implementation method of an ultrathin magnetically integrated transformer for LLC topology.

[0091] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Secondary coil; 2. Primary coil; 3. Winding frame; 4. Insulating insert; 5. First through hole; 6. Magnetic core; 7. Winding post; 8. Lower guard plate; 9. Upper guard plate; 10. Mounting hole; 11. Terminal block; 12. Second through hole; 13. First magnetic post; 14. Second magnetic post; 15. Third magnetic post; 16. Concave arc surface; 17. Arc-shaped convex plate; 18. Wire release groove; 19. Limiting plate. Detailed Implementation

[0092] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0093] Reference Figure 1 and Figure 2 This invention discloses an ultrathin magnetic integrated transformer device for LLC topology, which includes a secondary coil 1, a primary coil 2, a winding frame 3 for winding the secondary coil 1 and the primary coil 2, an insulating insert 4 mounted on the winding frame 3, and a magnetic core 6 symmetrically mounted on the winding frame 3 and the insulating insert 4.

[0094] Reference Figure 2 and Figure 3 The winding frame 3 includes a winding post 7 for winding the secondary coil 1 and the primary coil 2, a lower guard plate 8, and an upper guard plate 9. The cross-sectional area of ​​the lower guard plate 8 is larger than that of the upper guard plate 9, and the cross-sectional area of ​​the upper guard plate 9 is larger than that of the winding post 7. Thus, the lower guard plate 8 and the upper guard plate 9 limit and protect the secondary coil 1 and the primary coil 2. Several terminals 11 are provided at both ends of the lower guard plate 8 along its length. The terminals 11 at the end of the lower guard plate 8 away from the insulating insert 4 are used for connecting and fixing the secondary coil 1, and the terminals 11 at the end of the lower guard plate 8 closer to the insulating insert 4 are used for connecting and fixing the primary coil 2. The specific number of terminals 11 at both ends of the lower guard plate 8 along its length is set according to actual needs.

[0095] Reference Figure 2 and Figure 3 The lower protective plate 8 has mounting holes 10 for installing the insulating insert 4. The dimensions of the mounting holes 10 are the same as those of the insulating insert 4. The insulating insert 4 is located between the secondary coil 1 and the primary coil 2, so that the secondary coil 1 is wound only on the winding post 7, while the primary coil 2 is wound on both the insulating insert 4 and the winding post 7. This blocks the coupling magnetic circuit between the secondary coil 1 and the primary coil 2 through the insulating insert 4, increasing the transformer leakage inductance. The side of the insulating insert 4 near the winding post 7 has a concave arc surface 16, which facilitates the winding and placement of the secondary coil 1. The upper protective plate 9 has an integrally formed arc-shaped protrusion 17 on the side near the insulating insert 4, which abuts against the concave arc surface 16, thus facilitating the protection of the secondary coil 1. In this embodiment, a limiting plate 19 for protecting and limiting the primary coil 2 is integrally provided on the side of the insulating insert 4 away from the lower guard plate 8, and the limiting plate 19 is flush with the upper guard plate 9, thereby facilitating the subsequent installation of the winding frame 3 and the insulating insert 4 by the magnetic core component 6.

[0096] Reference Figure 2 and Figure 3The magnetic core 6 has a first magnetic post 13, a second magnetic post 14, and a third magnetic post 15 integrally formed on the side near the winding frame 3. The first magnetic post 13 is located in the middle of the magnetic core 6 and has an elliptical cross-sectional area. The winding post 7 has a second through hole 12 for the first magnetic post 13 to pass through. The size of the second through hole 12 is the same as that of the first magnetic post 13, so that there is no air gap between the first magnetic post 13 and the winding post 7, which facilitates the transfer of energy between the secondary coil 1 and the primary coil 2. The second magnetic post 14 is located at the end of the magnetic core 6 near the insulating insert 4. The insulating insert 4 has a first through hole 5 for the second magnetic post 14 to pass through. The size of the first through hole 5 is larger than that of the second magnetic post 14, so that there is an air gap between the second magnetic post 14 and the first through hole 5, thereby adjusting the leakage inductance of the transformer by adjusting the depth of the air gap. Two third magnetic pillars 15 are provided, and the two third magnetic pillars 15 are located on both sides of the magnetic core 6 along the width direction. The length of the third magnetic pillar 15 is the same as that of the first magnetic pillar 13, and the width of the third magnetic pillar 15 gradually decreases from the first magnetic pillar 13 to the second magnetic pillar 14, thereby further reducing leakage inductance. In this embodiment, the heights of the first magnetic pillar 13, the second magnetic pillar 14, and the third magnetic pillar 15 are the same, and the height of the first magnetic pillar 13, the second magnetic pillar 14, and the third magnetic pillar 15 is equal to half the height of the winding pillar 7. Therefore, when the two magnetic cores 6 are symmetrically installed on the upper and lower sides of the winding frame 3 and the insulating insert 4, the first magnetic pillar 13, the second magnetic pillar 14, and the third magnetic pillar 15 of the two magnetic cores 6 can all abut against each other.

[0097] Reference Figure 2 and Figure 3 Both ends of the lower guard plate 8 are provided with several wire placement slots 18 for placing the wires of the secondary coil 1 and the primary coil 2. The wire placement slots 18 correspond one-to-one with the terminals 11, so that the wires of the secondary coil 1 and the primary coil 2 are not easily damaged.

[0098] Reference Figure 4 Based on the same inventive concept, embodiments of the present invention provide a method for implementing an ultrathin magnetically integrated transformer for LLC topology, comprising:

[0099] S1: Collect transformer application requirements.

[0100] Transformer application requirements refer to the sum of a series of electrical, physical, and environmental technical indicators and constraints that must be met for normal operation in a specific application scenario. Transformer application requirements include the application scenario, load conditions, and target efficiency.

[0101] Transformer application requirements are obtained through pre-input by the operator.

[0102] S2: Generate coil specifications and resonant inductance value according to the requirements of transformer application.

[0103] Here, coil specifications refer to the number of turns, wire diameter, copper foil width and thickness, winding method, and other specifications corresponding to secondary coil 1 and primary coil 2 in the transformer. Resonant inductance value refers to the specific parameter value of the resonant inductance required in the LLC topology.

[0104] By analyzing the requirements of transformer applications, coil specifications and resonant inductance values ​​are generated to facilitate subsequent use.

[0105] To further ensure the rationality of the coil specifications and resonant inductance value, it is necessary to perform further separate analysis and calculation on the coil specifications and resonant inductance value, which will be explained in detail through the steps shown below.

[0106] The method for generating coil specifications and resonant inductance values ​​includes the following steps:

[0107] S21: Retrieve application scenarios, load conditions, and target efficiency based on transformer application requirements.

[0108] Application scenarios refer to the specific application areas, usage environments, and physical spaces in which the final transformer product is used. These scenarios include applications such as ultra-thin all-in-one computers, on-board chargers (OBCs), LCD TVs, and LED drivers. Load conditions refer to the operating state range and characteristics of the electrical equipment (load) connected to the transformer's secondary output. Target efficiency refers to the expected design specifications for the energy conversion efficiency of the entire power supply or the transformer itself at a specific operating point (such as rated input voltage and rated load).

[0109] The application scenario, load conditions, and target efficiency are retrieved based on the transformer application requirements, which facilitates subsequent use.

[0110] S22: Determine the scene allowable size, scene reference input voltage, and scene reference output voltage according to the application scenario.

[0111] The scenario allowable size refers to the maximum external profile size limit that the transformer must adhere to during installation. The scenario reference input voltage refers to the actual voltage value applied to the secondary coil 1 under a specific application scenario. The scenario reference output voltage refers to the output voltage value of the primary coil 2 under a specific application scenario.

[0112] Different application scenarios correspond to different scenario allowable dimensions, scenario reference input voltages, and scenario reference output voltages.

[0113] By inputting the application scenario into a preset scenario database, the permissible scenario size, scenario reference input voltage, and scenario reference output voltage are obtained for convenient subsequent use.

[0114] The scenario database pre-stores a table showing different application scenarios and their corresponding permissible dimensions, reference input voltages, and reference output voltages. The scenario database is retrieved after pre-entry by the operator.

[0115] For example, when the application scenario is an ultra-thin all-in-one computer, the maximum projected area of ​​the transformer is 30mm*40mm, and the thickness (height) must be ≤8mm. The scenario reference input voltage is 400V, and the scenario reference output voltage is 12V.

[0116] S23: Calculate the coil turns ratio using the scene reference input voltage and the scene reference output voltage.

[0117] The coil turns ratio refers to the proportional relationship between the number of turns of secondary coil 1 and the number of turns of primary coil 2.

[0118] The ratio between the scene reference input voltage and the scene reference output voltage is calculated, and the calculation result is used as the coil turns ratio for convenient subsequent use.

[0119] S24: Determine the primary initial specifications by combining the coil turns ratio and the scenario reference input voltage.

[0120] The primary initial specification refers to the specification corresponding to the secondary coil 1 after initial determination.

[0121] The minimum number of turns for secondary coil 1 is determined by the coil turns ratio. The minimum number of turns for input voltage and wire specifications for secondary coil 1 are determined by the scenario reference input voltage. The larger value between the minimum number of turns ratio and the minimum number of turns for input voltage is selected as the overall minimum number of turns for secondary coil 1. Then, the coil specifications that meet the overall minimum number of turns and wire specifications are used as the initial specifications for primary coil 1 for convenient use in the future.

[0122] S25: Generate primary selection specifications by combining the scene's allowable dimensions with the primary initial specifications.

[0123] Among them, the primary selection specification refers to the specification corresponding to the primary initial specification.

[0124] By analyzing the permissible dimensions of the scene and the initial specifications, a preliminary selection specification is generated to facilitate subsequent use.

[0125] To further ensure the rationality of the initial selection specifications, it is necessary to conduct further separate analysis and calculation on the initial selection specifications, which will be explained in detail through the steps shown below.

[0126] The method for generating the initial selection specifications includes the following steps:

[0127] S251: Determine the initial specification dimensions and the specification adaptation temperature value based on the primary initial specifications.

[0128] The initial specification dimensions refer to the physical dimensions of the initial coil corresponding to the primary initial specification. The specification adaptation temperature value refers to the temperature value at which the initial coil corresponding to the primary initial specification operates normally.

[0129] The corresponding physical dimensions are retrieved by querying the initial specifications and used as the initial specification dimensions. The corresponding temperature values ​​for normal operation are also retrieved to facilitate subsequent use.

[0130] S252: Determine the number of dimensional conformities and dimensional deviations by combining the initial specification dimensions with the scene's allowable dimensions.

[0131] The number of dimensions that conform to the initial specifications refers to the number of initial specifications that meet the scene's allowable dimensions. The dimension deviation value refers to the deviation between the initial specifications and the scene's allowable dimensions.

[0132] By counting the initial specifications that meet the scene's allowable dimensions, and using the count as the number of dimensions that meet the requirements, the deviation between the initial specifications that meet the requirements and the scene's allowable dimensions is calculated, and the calculation result is used as the size deviation value for convenient subsequent use.

[0133] S253: Determine whether the number of conforming dimensions is greater than the preset number of conforming references. If yes, proceed to S254; if no, proceed to S256.

[0134] The number of criteria met refers to the minimum number of options that can be selected.

[0135] By judging whether the number of conforming dimensions is greater than the preset number of conforming references, it can be determined whether the selection can be made directly based on the dimension deviation value.

[0136] S254: Generate reference values ​​for size selection by combining dimensional deviation values ​​with the temperature values ​​suitable for the specifications.

[0137] Among them, the size selection reference value refers to the reference value corresponding to the fusion of two different dimensions of parameters, namely the size deviation value and the specification adaptation temperature value, into a single comparable value.

[0138] When the number of dimensions that meet the standard exceeds the preset number of dimensions that meet the standard, it means that the dimension deviation value cannot be directly used for selection. Therefore, by analyzing the dimension deviation value and the specification adaptation temperature value, a dimension selection reference value is generated for convenient use in the future.

[0139] To further ensure the rationality of the size selection reference values, it is necessary to perform further separate analysis and calculation on the size selection reference values, which will be explained in detail through the steps shown below.

[0140] The method for generating reference values ​​for size selection includes the following steps:

[0141] S2541: Determine the estimated temperature value based on the application scenario.

[0142] Among them, the scenario-estimated temperature value refers to the expected maximum operating temperature of the surrounding environment or installation location when the device is used in the application scenario.

[0143] Different application scenarios require different estimated temperature values.

[0144] By inputting the application scenario into a preset scenario database, the estimated temperature value of the scenario is obtained for easy subsequent use.

[0145] The scenario database pre-stores a table of different application scenarios and their corresponding estimated temperature values. The scenario database is obtained after the operator pre-inputs the data.

[0146] S2542: Determine the transformer temperature value based on the scenario reference input voltage and the scenario reference output voltage.

[0147] The transformer temperature value refers to the heating temperature value calculated under given scenario reference input voltage and scenario reference output voltage conditions.

[0148] The reference current is retrieved by the application scenario, and the product of the scenario reference input voltage and the reference current is calculated to obtain the input power. The product of the scenario reference output voltage and the reference current is calculated to obtain the output power. Then, the estimated temperature rise is calculated based on the input power and the output power and used as the transformer temperature value for convenient subsequent use.

[0149] S2543: Determine the temperature adjustment value by combining the scenario-estimated temperature value and the transformer temperature value.

[0150] The temperature adjustment value refers to the adjustment value corresponding to the temperature adjustment.

[0151] The sum of the predicted temperature value and the transformer temperature value is calculated, and the calculation result is used as the temperature adjustment value for convenient subsequent use.

[0152] S2544: Determine the temperature deviation value by combining the temperature adjustment value and the specification adaptation temperature value.

[0153] Among them, the temperature deviation value refers to the deviation between the temperature adjustment value and the specified temperature adaptation value.

[0154] The difference between the temperature adjustment value and the specified suitable temperature value is calculated, and the calculation result is used as the temperature deviation value for convenient subsequent use.

[0155] S2545: Determine the temperature deviation reference value based on the temperature deviation value.

[0156] Among them, the temperature deviation reference value refers to the reference value corresponding to the temperature deviation.

[0157] The product of the temperature deviation value and the preset temperature deviation coefficient is calculated, and the calculation result is used as a temperature deviation reference value for convenient subsequent use.

[0158] The temperature deviation coefficient is a coefficient used to convert the temperature deviation value into a temperature deviation reference value. The temperature deviation coefficient is obtained after being pre-input by the operator.

[0159] S2546: Determine the reference value for dimensional deviation based on the dimensional deviation value.

[0160] Among them, the size deviation reference value refers to the reference value corresponding to the existence of size deviation.

[0161] The product of the dimensional deviation value and the preset dimensional deviation coefficient is calculated, and the calculation result is used as a dimensional deviation reference value for convenient subsequent use.

[0162] The dimensional deviation coefficient is a coefficient used to convert dimensional deviation values ​​into dimensional deviation reference values. The dimensional deviation coefficient is obtained after being pre-input by the operator.

[0163] S2547: Determine a comprehensive reference value by combining the temperature deviation reference value and the dimensional deviation reference value, and use the comprehensive reference value as the dimensional selection reference value.

[0164] The comprehensive reference value refers to the reference value that is obtained by combining temperature deviation and dimensional deviation.

[0165] By calculating the sum of the temperature deviation reference value and the size deviation reference value, and using the calculation result as a comprehensive reference value, and then using the comprehensive reference value as the size selection reference value, the accuracy of the obtained size selection reference value is improved.

[0166] S255: Sort the size selection reference values ​​from largest to smallest, and take the primary initial specification corresponding to the size selection reference value with the largest sort as the primary selection specification.

[0167] The accuracy of the primary selection specifications is improved by sorting the size selection reference values ​​from largest to smallest and taking the primary initial specification corresponding to the size selection reference value with the largest sorted value as the primary selection specification.

[0168] S256: Sort the dimensional deviation values ​​from smallest to largest, and take the primary initial specification corresponding to the dimensional deviation value with the largest deviation value as the primary selected specification.

[0169] When the number of conforming dimensions is not greater than the preset number of conforming references, it means that selection can be made directly based on the dimension deviation value. Therefore, the dimension deviation values ​​are sorted from smallest to largest, and the primary initial specification corresponding to the dimension deviation value with the first largest size is taken as the primary selection specification, thereby improving the accuracy of the obtained primary selection specification.

[0170] S26: Determine the secondary selection specifications by combining the primary selection specifications and the coil turns ratio.

[0171] The secondary selection specification refers to the specification corresponding to the primary coil 2 after the selection of the primary coil 2 specification.

[0172] The number of turns corresponding to the selected secondary coil 1 is retrieved by the primary selection specification, and the secondary selection specification is obtained by calculating the ratio of the number of turns corresponding to the secondary coil 1 to the number of coil turns, which facilitates subsequent use.

[0173] S27: Combine the coil turns ratio, scenario reference output voltage, scenario reference input voltage, load conditions and target efficiency to determine the inductance requirement value, and use the primary and secondary selected specifications as the coil specifications, and the inductance requirement value as the resonant inductance value.

[0174] The inductance requirement value refers to the specific value that the inductor needs to achieve in an LLC topology.

[0175] The series resonant frequency and normalized inductance ratio are selected based on the target efficiency. Higher target efficiency necessitates higher series resonant frequencies and normalized inductance ratios. The rated output power is determined by load conditions. The required maximum voltage gain is calculated using the coil turns ratio, scenario reference output voltage, preset forward voltage drop of the secondary rectifier diode, and scenario reference input voltage. The required inductance value is then calculated using the required maximum voltage gain, coil turns ratio, scenario reference output voltage, preset forward voltage drop of the secondary rectifier diode, scenario reference input voltage, series resonant frequency, rated output power, and normalized inductance ratio. The primary and secondary selected specifications are used as the coil specifications, and the required inductance value is used as the resonant inductance value, thereby improving the accuracy of the obtained coil specifications and resonant inductance value. The formula for calculating the required maximum voltage gain is: Mmax = n (Vout+Vf) / (Vin / 2);

[0176] Where Mmax is the required maximum voltage gain, n is the coil turns ratio, Vout is the scene reference output voltage, Vf is the preset forward voltage drop of the secondary rectifier, which is obtained after pre-input by the operator, and Vin is the scene reference input voltage.

[0177] The formula for calculating the required inductance value is: Lr = n 2 (Vout+Vf) 2 / (4π) 2 fr 2 Pout k Mmax 2 );

[0178] Where Lr is the required inductance value, fr is the series resonant frequency, Pout is the rated output power, and k is the normalized inductance ratio.

[0179] S3: Select the primary coil 2, secondary coil 1, winding frame 3, insulating insert 4 and magnetic core 6 according to the coil specifications.

[0180] The secondary coil 1 and primary coil 2 are selected according to their specifications, and the appropriate winding frame 3, insulating insert 4 and magnetic core 6 are selected according to the specifications of the secondary coil 1 and primary coil 2, so as to facilitate subsequent use.

[0181] S4: Combine the resonant inductance value with the coil specifications to generate the air gap depth value.

[0182] The air gap depth value refers to the depth value required for air gap adjustment around the second magnetic post 14 on the magnetic core 6.

[0183] By analyzing the resonant inductance value and coil specifications, the air gap depth value is generated for convenient subsequent use.

[0184] To further ensure the rationality of the air gap depth value, it is necessary to perform a further separate analysis and calculation on the air gap depth value, which will be explained in detail through the steps shown below.

[0185] The method for generating the air gap depth value includes the following steps:

[0186] S41: Determine the core specifications of the core component 6 and the number of turns of the primary coil 2 according to the coil specifications.

[0187] Here, the magnetic core specification refers to the size specification corresponding to magnetic core component 6. The number of coil turns refers to the number of turns corresponding to primary coil 2.

[0188] The specifications of the magnetic core and the number of coil turns can be retrieved by specifying the coil specifications, which facilitates subsequent use.

[0189] S42: Retrieve the magnetic reluctance value and cross-sectional area of ​​the magnetic core based on the core specifications.

[0190] Here, the magnetic core reluctance value refers to the magnetic reluctance value that the magnetic core component 6 can generate. The magnetic core cross-sectional area refers to the cross-sectional area corresponding to the cylinder in the magnetic core component 6 used to guide the main magnetic flux path.

[0191] Different core specifications correspond to different core reluctance values ​​and core cross-sectional areas.

[0192] By inputting the core specifications into a preset core database, the magnetic reluctance value and cross-sectional area of ​​the core are obtained for easy subsequent use.

[0193] The magnetic core database contains a pre-stored table of different magnetic core specifications and their corresponding magnetic reluctance values ​​and cross-sectional areas. The magnetic core database is accessed after the operator has pre-entered the information.

[0194] S43: Determine the required magnetic reluctance value based on the resonant inductance value and the number of coil turns.

[0195] The required magnetoresistance value refers to the total magnetoresistance value that needs to be achieved based on the resonant inductance value.

[0196] By calculating the square value between the number of coil turns, and then calculating the quotient between the square value and the resonant inductance value, the required magnetoresistance value can be obtained, which is convenient for subsequent use.

[0197] S44: Combine the required magnetoresistance value with the core magnetoresistance value to generate the air gap magnetoresistance value.

[0198] Among them, the air gap magnetoresistance value refers to the magnetoresistance value generated by the air gap.

[0199] By analyzing the required magnetoresistance value and the core magnetoresistance value, the air gap magnetoresistance value is generated for convenient subsequent use.

[0200] To further ensure the rationality of the air gap magnetoresistance value, it is necessary to perform a further separate analysis and calculation of the air gap magnetoresistance value, which will be explained in detail through the following steps.

[0201] The method for generating the air gap magnetoresistance value includes the following steps:

[0202] S441: Determine the core ratio value based on the core reluctance value and the required reluctance value.

[0203] Among them, the core ratio value refers to the ratio between the core reluctance value and the required reluctance value.

[0204] The ratio between the magnetic core reluctance value and the required magnetic reluctance value is calculated, and the calculation result is used as the magnetic core ratio value for convenient subsequent use.

[0205] S442: Determine whether the core ratio value is greater than the preset core reference ratio value. If yes, proceed to S443; if no, proceed to S446.

[0206] The core reference scale value refers to the maximum allowable scale value when temperature has no effect. The core reference scale value is preset by the operator according to actual needs.

[0207] By judging whether the magnetic core ratio value is greater than the preset magnetic core reference ratio value, it can be determined whether the temperature has an impact.

[0208] S443: Determine the temperature magnetic reluctance influence value based on the temperature adjustment value.

[0209] Among them, the temperature-induced magnetoresistance effect value refers to the degree of influence of temperature on magnetoresistance.

[0210] When the core ratio value is greater than the preset core reference ratio value, it indicates that the temperature has an impact. Therefore, the product value between the temperature adjustment value and the preset temperature influence coefficient is calculated, and the calculation result is used as the temperature magnetic reluctance influence value for convenient subsequent use.

[0211] The temperature influence coefficient is a coefficient used to convert the temperature adjustment value into the temperature magnetoresistance influence value. The temperature influence coefficient is obtained after being pre-input by the operator.

[0212] S444: Determine the core reluctance adjustment value by combining the temperature reluctance influence value and the core reluctance value.

[0213] Among them, the magnetic core reluctance adjustment value refers to the reluctance value corresponding to the magnetic core reluctance value after adjustment.

[0214] The sum of the temperature-induced magnetic reluctance value and the magnetic core reluctance value is calculated, and the calculation result is used as the magnetic core reluctance adjustment value for convenient subsequent use.

[0215] S445: Calculate the difference between the required magnetic reluctance value and the core magnetic reluctance adjustment value and use it as the air gap magnetic reluctance value.

[0216] Specifically, by calculating the difference between the required magnetoresistive value and the core magnetoresistive adjustment value, and using the calculation result as the air gap magnetoresistive value, the accuracy of the obtained air gap magnetoresistive value is improved.

[0217] S446: Calculate the difference between the required magnetic reluctance value and the magnetic core magnetic reluctance value and use it as the air gap magnetic reluctance value.

[0218] When the core ratio is not greater than the preset core reference ratio, it means that the temperature has no effect. Therefore, the difference between the required magnetic reluctance value and the core magnetic reluctance value is calculated, and the calculation result is used as the air gap magnetic reluctance value, thereby improving the accuracy of the obtained air gap magnetic reluctance value.

[0219] S45: Determine the required depth value by combining the air gap reluctance value and the core cross-sectional area, and use the required depth value as the air gap depth value.

[0220] The demand depth value refers to the depth value reached by the generated air gap demand.

[0221] The accuracy of the obtained air gap depth value is improved by calculating the product of the air gap reluctance, the core cross-sectional area, and the preset reference permeability, and then using the calculation result as the required depth value and the required depth value as the air gap depth value.

[0222] The reference permeability refers to the pre-set permeability of the air gap during actual use. The reference permeability is obtained after being pre-input by the operator.

[0223] S5: Generate gasket installation information based on the air gap depth value.

[0224] Among them, the gasket installation information refers to the installation information corresponding to the need to add gaskets to the air gap to meet the depth requirements.

[0225] By analyzing the air gap depth value, gasket installation information is generated to facilitate subsequent use.

[0226] To further ensure the rationality of the gasket installation information, it is necessary to perform further separate analysis and calculation on the gasket installation information, which will be explained in detail through the steps shown below.

[0227] The method for generating gasket installation information includes the following steps:

[0228] S51: Determine the core height value according to the core specifications.

[0229] The magnetic core height value refers to the height value corresponding to the second magnetic post 14 on the magnetic core component 6.

[0230] The core height value can be retrieved by referring to the core specifications, which facilitates subsequent use.

[0231] S52: Calculate the difference between the core height and the air gap depth and use it as the shim height.

[0232] The gasket height value refers to the height value corresponding to the gasket that needs to be installed.

[0233] The difference between the core height and the air gap depth is calculated, and the result is used as the shim height for convenient subsequent use.

[0234] S53: Determine the height ratio by combining the shim height value and the magnetic core height value.

[0235] The height ratio refers to the ratio between the height of the shim and the height of the magnetic core.

[0236] The ratio between the shim height and the magnetic core height is calculated, and the result is used as the height ratio for convenient subsequent use.

[0237] S54: Generate installation location points based on the height ratio value.

[0238] The installation location point refers to the location point where the gasket is installed.

[0239] By analyzing the height ratio values, installation location points are generated to facilitate subsequent use.

[0240] To further ensure the rationality of the installation location, it is necessary to perform further separate analysis and calculation on the installation location, which will be explained in detail through the steps shown below.

[0241] The method for generating installation location points includes the following steps:

[0242] S541: Determine the height reference ratio and installation reference position point based on the magnetic core height value.

[0243] The installation reference point refers to the position point corresponding to the normal installation based on the core height value. The height reference ratio value refers to the reference ratio value corresponding to the installation at the installation reference point based on the core height value.

[0244] The installation reference point is generally the bottom position of the second magnetic post 14 on the magnetic core component 6. The magnetic core height value is input into the preset magnetic core height database to obtain the height reference ratio value, which facilitates subsequent use.

[0245] The magnetic core height database has a pre-stored table of different magnetic core height values ​​and their corresponding height reference ratios. The larger the magnetic core height value, the larger the height reference ratio value. The magnetic core height database is obtained after the operator pre-inputs the information.

[0246] S542: Determine whether the height scale value is greater than the height reference scale value. If yes, proceed to S543; if no, proceed to S546.

[0247] Specifically, by judging whether the height ratio value is greater than the height reference ratio value, it is determined whether the installation reference position point can be used directly.

[0248] S543: Calculate the difference between the height scale value and the height reference scale value and use it as the scale deviation value.

[0249] Among them, the proportional deviation value refers to the deviation value corresponding to the height proportional value when there is a deviation.

[0250] When the height ratio value is greater than the height reference ratio value, it means that the installation reference position point cannot be used directly. Therefore, the difference between the height ratio value and the height reference ratio value is calculated, and the calculation result is used as the ratio deviation value for convenient use later.

[0251] S544: Determine the position adjustment value based on the proportional deviation value.

[0252] The position adjustment value refers to the distance value corresponding to adjusting the installation reference position point in a direction away from the bottom of the second magnetic column 14.

[0253] The product of the proportional deviation value and the preset position adjustment coefficient is calculated, and the calculation result is used as the position adjustment value for convenient subsequent use.

[0254] The position adjustment factor is a coefficient used to convert the proportional deviation value into a position adjustment value. The position adjustment factor is preset by the operator.

[0255] S545: Adjust the installation reference position point based on the position adjustment value to obtain the adjustment position point, and use the adjustment position point as the installation position point.

[0256] The adjustment point refers to the position point corresponding to the installation reference point after adjustment.

[0257] By adjusting the installation reference point according to the position adjustment value to obtain the adjustment position point, and using the adjustment position point as the installation position point, the accuracy of the obtained installation position point is improved.

[0258] S546: Use the installation reference point as the installation location point.

[0259] When the height ratio is not greater than the height reference ratio, it means that the installation reference point can be used directly. Therefore, the installation reference point is used as the installation point to improve the accuracy of the obtained installation point.

[0260] S55: Combine the installation location point with the shim height value and use it as shim installation information.

[0261] By combining the installation location point with the gasket height value, and using the combined information as the gasket installation information, the accuracy of the obtained gasket installation information is improved.

[0262] S6: The selected primary coil 2 and secondary coil 1 are wound side by side on the winding frame 3 and separated by an insulating insert 4.

[0263] In this method, the secondary coil 1 is wound in a row on the winding frame 3, and the primary coil 2 is wound side by side on the winding frame 3 and the insulating insert 4. The insulating insert 4 separates the secondary coil 1 and the primary coil 2, thereby achieving the goal of ultra-thin design.

[0264] S7: Adjust the second magnetic post 14 on the magnetic core 6 according to the shim installation information, and install the preset magnetic core 6.

[0265] The transformer is installed by mounting the shims onto the second magnetic post 14 on the magnetic core 6 using the shim mounting information, and then mounting the magnetic core 6 onto the winding frame 3. This completes the transformer installation. The frame insert insulation blocks the coupling magnetic circuit between the secondary coil 1 and the primary coil 2, increasing the transformer's leakage inductance. Furthermore, the leakage inductance is adjusted by changing the air gap depth on the second magnetic post 14 using the shims. This eliminates the need for an external resonant inductor, simplifies the manufacturing process, ensures high conversion efficiency, and facilitates the transformer's use in ultra-thin applications.

[0266] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for implementing an ultrathin magnetically integrated transformer for LLC topology, characterized in that, include: S1: Collect transformer application requirements; S2: Generate coil specifications and resonant inductance value according to transformer application requirements; S3: Select the primary coil (2), secondary coil (1), winding frame (3), insulating insert (4) and magnetic core (6) according to the coil specifications; S4: Combine the resonant inductance value with the coil specifications to generate the air gap depth value; S5: Generate gasket installation information based on the air gap depth value; S6: The selected primary coil (2) and secondary coil (1) are wound side by side on the winding frame (3) and the insulating insert (4) is installed to separate them; S7: Adjust the second magnetic post (14) on the magnetic core (6) according to the shim installation information, and install the preset magnetic core (6); The coil specifications and methods for generating the resonant inductance value include: S21: Retrieve application scenarios, load conditions, and target efficiency based on transformer application requirements; S22: Determine the scene allowable size, scene reference input voltage, and scene reference output voltage according to the application scenario; S23: Calculate the coil turns ratio using the scene reference input voltage and the scene reference output voltage; S24: Determine the primary initial specifications by combining the coil turns ratio and the scenario reference input voltage; S25: Generate primary selection specifications by combining scene allowable dimensions and primary initial specifications; S26: Determine the secondary selection specifications by combining the primary selection specifications and the coil turns ratio; S27: Combine the coil turns ratio, scenario reference output voltage, scenario reference input voltage, load conditions and target efficiency to determine the inductance requirement value, and use the primary and secondary selection specifications as the coil specifications, and the inductance requirement value as the resonant inductance value. Methods for generating air gap depth values ​​include: S41: Determine the core specifications of the magnetic core component (6) and the number of turns of the primary coil (2) according to the coil specifications; S42: Retrieve the magnetic reluctance value and cross-sectional area of ​​the magnetic core based on the core specifications; S43: Determine the required magnetic reluctance value based on the resonant inductance value and the number of coil turns; S44: Combine the required magnetoresistance value with the core magnetoresistance value to generate the air gap magnetoresistance value; S45: Combine the air gap reluctance value with the core cross-sectional area to determine the required depth value, and use the required depth value as the air gap depth value. Methods for generating gasket installation information include: S51: Determine the core height value according to the core specifications; S52: Calculate the difference between the core height value and the air gap depth value and use it as the shim height value; S53: Determine the height ratio by combining the shim height value and the magnetic core height value; S54: Generate installation location points based on the height ratio value; S55: Combine the installation location point with the shim height value and use it as shim installation information.

2. The method for implementing an ultrathin magnetically integrated transformer for LLC topology according to claim 1, characterized in that, The methods for generating the initial selection specifications include: S251: Determine the initial specification dimensions and the specification adaptation temperature value based on the primary initial specifications; S252: Determine the number of dimensional conformities and dimensional deviations by combining the initial specification dimensions with the scene's permissible dimensions; S253: Determine whether the number of dimensional conformities is greater than the preset number of conformity references; S254: If yes, then the size selection reference value is generated by combining the size deviation value and the specification adaptation temperature value; S255: Sort the size selection reference values ​​from largest to smallest, and take the primary initial specification corresponding to the first size selection reference value as the primary selection specification. S256: If not, sort the dimensions from smallest to largest based on the dimensional deviation values, and take the primary initial specification corresponding to the dimensional deviation value with the largest dimensional deviation value as the primary selected specification.

3. The method for implementing an ultrathin magnetically integrated transformer for LLC topology according to claim 2, characterized in that, Methods for generating reference values ​​for size selection include: S2541: Determine the estimated temperature value based on the application scenario; S2542: Determine the transformer temperature value based on the scene reference input voltage and the scene reference output voltage; S2543: Determine the temperature adjustment value by combining the scenario-estimated temperature value and the transformer temperature value; S2544: Determine the temperature deviation value by combining the temperature adjustment value and the specification adaptation temperature value; S2545: Determine the temperature deviation reference value based on the temperature deviation value; S2546: Determine the reference value for dimensional deviation based on the dimensional deviation value; S2547: Determine a comprehensive reference value by combining the temperature deviation reference value and the dimensional deviation reference value, and use the comprehensive reference value as the dimensional selection reference value.

4. The method for implementing an ultrathin magnetically integrated transformer for LLC topology according to claim 3, characterized in that, Methods for generating air gap magnetoresistance include: S441: Determine the core ratio value based on the core reluctance value and the required reluctance value; S442: Determine whether the core ratio value is greater than the preset core reference ratio value; S443: If yes, then determine the temperature magnetoresistance effect value based on the temperature adjustment value; S444: Determine the core reluctance adjustment value by combining the temperature reluctance influence value and the core reluctance value; S445: Calculate the difference between the required reluctance value and the core reluctance adjustment value and use it as the air gap reluctance value; S446: If not, calculate the difference between the required magnetic reluctance value and the core magnetic reluctance value and use it as the air gap magnetic reluctance value.

5. The method for implementing an ultrathin magnetically integrated transformer for LLC topology according to claim 1, characterized in that, Methods for generating installation location points include: S541: Determine the height reference ratio and installation reference position based on the core height value; S542: Determine whether the height scale value is greater than the height reference scale value; S543: If yes, calculate the difference between the height scale value and the height reference scale value and use it as the scale deviation value; S544: Determine the position adjustment value based on the proportional deviation value; S545: Adjust the installation reference position point based on the position adjustment value to obtain the adjustment position point, and use the adjustment position point as the installation position point; S546: If not, the installation reference point will be used as the installation location point.

6. An ultrathin magnetically integrated transformer device for LLC topology, applied to a method for implementing an ultrathin magnetically integrated transformer for LLC topology as described in any one of claims 1 to 5, comprising a secondary coil (1) and a primary coil (2), characterized in that, Also includes: The winding frame (3) is used for winding both the secondary coil (1) and the primary coil (2); An insulating insert (4) is disposed on the winding frame (3) for the primary coil (2) to be wound, located between the secondary coil (1) and the primary coil (2), and has a first through hole (5). The magnetic core (6) is symmetrically arranged on the winding frame (3) and the insulating insert (4); The winding frame (3) includes a winding post (7) for winding the secondary coil (1) and the primary coil (2), a lower guard plate (8) and an upper guard plate (9). The lower guard plate (8) has a mounting hole (10) for the insulating insert (4) to pass through. Both ends of the lower guard plate (8) are provided with a plurality of terminals (11). The winding post (7) has a second through hole (12). The magnetic core (6) is provided with a first magnetic post (13), a second magnetic post (14) and a third magnetic post (15). The first magnetic post (13) passes through the first through hole (5). The second magnetic post (14) has a concave arc surface (16) on the side close to the first magnetic post (13). The second magnetic post (14) passes through the second through hole (12). The third magnetic post (15) is located on both sides of the magnetic core (6). The upper guard plate (9) is provided with an arc-shaped protrusion (17) on the side near the second magnetic post (14) for contacting the concave arc surface (16).

7. The ultrathin magnetically integrated transformer device for LLC topology according to claim 6, characterized in that: Both ends of the lower guard plate (8) are provided with several wire slots (18), and the wire slots (18) correspond one-to-one with the terminals (11).

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