High-power wireless charging coil structure and corresponding winding method thereof

Abstract

The invention discloses a high-power wireless charging coil structure, which can freely combine and assemble a ground transmitting end and a vehicle receiving end to a certain extent according to different practical applications, does not add new design and structure production tasks on the premise of achieving better magnetic coupling, and can accelerate design and manufacture and reduce production cost. The structure is characterized in that the structure comprises M unit-size column strip modularized coil splicing discs, and M is a natural number greater than or equal to 1; n unit sizes of rib modular coils are spliced, wherein N is an integer greater than or equal to 0; and winding a coil. The invention further discloses a winding method of the high-power wireless charging coil.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to a high-power wireless charging coil structure. The present invention also provides a winding method for the high-power wireless charging coil. Background Art

[0002] The ground transmitter (GA) and the vehicle receiver (VA) are the basic components of the wireless charging system. The quality of the magnetic coupling between the ground transmitter (GA) and the vehicle receiver (VA) directly affects the possibility and stability of the entire wireless charging, and determines the charging efficiency. Therefore, in response to different user needs and application scenarios in the market, different sizes of ground transmitters (GA) and vehicle receivers (VA) need to be designed, and the compatibility between different sizes of ground transmitters (GA) and vehicle receivers (VA) is poor, which greatly increases the design and production costs. Summary of the invention

[0003] In view of the above problems, the present invention provides a high-power wireless charging coil structure, which can be freely combined and assembled with a ground transmitting end and a vehicle receiving end to a certain extent according to different actual applications. Under the premise of achieving better magnetic coupling, no new design and structural production tasks are added, which can speed up design and production and reduce production costs.

[0004] A high-power wireless charging coil structure, characterized in that it includes:

[0005] A modular coil platter of M unit-sized columns, where M is a natural number ≥ 1;

[0006] A modular coil platter of ribs of N unit sizes, where N is an integer ≥ 0;

[0007] and winding coils;

[0008] Each of the column-bar modular coil platter has a size of a*b and is a rectangle. Each of the column-bar modular coil platter comprises a first bottom plate and a plurality of evenly distributed upper convex columns. The upper surface of the first bottom plate is arrayed with a plurality of upper convex columns.

[0009] Each of the rib modular coil platter is a rectangle with a size of a*b, each of the rib modular coil platter comprises a second bottom plate and a plurality of upper convex ribs arranged in parallel, the rib modular coil platter comprises a first rib modular coil platter and a second rib modular coil platter, the upper surface of the second bottom plate of the first rib modular coil platter is provided with a plurality of upper convex ribs arranged in parallel along its short sides, the upper surface of the second bottom plate of the second rib modular coil platter is provided with a plurality of upper convex ribs arranged in parallel along its long sides, the spacing between adjacent upper convex ribs is equal to form an embedding groove, the width of the embedding groove enables the coil to be reliably embedded and arranged;

[0010] M of the column modular coil platters and N of the rib modular coil platters are assembled to form a assembled rectangle of a preset shape, wherein there is no wound coil in the central area of ​​the assembled rectangle, and the wound coil is enclosed from the inside to the outside or from the outside to the inside around the outer surface of the assembled rectangle.

[0011] It is further characterized by:

[0012] The preset height of the upper convex column is not less than the sum of the thicknesses of all layers of the winding coils of the maximum design number of layers in the height dimension; the preset height of the upper convex rib is not less than the sum of the thicknesses of all layers of the winding coils of the maximum design number of layers in the height dimension;

[0013] The height of the upper convex column is not less than the sum of the stacking thickness of all coils when the winding coil is two layers, and the height of the upper convex rib is not less than the sum of the stacking thickness of all coils when the winding coil is two layers;

[0014] The column bar modular coil platter is also provided with a corresponding first pad, and holes are arranged on the first pad corresponding to the position of each upper boss. When the preset number of coil layers is less than the preset height of the upper boss, and the difference is relatively large, the corresponding first pad is paved on the upper surface of the first bottom plate of the column bar modular coil platter, and each upper boss passes through the corresponding hole and convexly arranged, and the extra height of the upper boss is compensated by the first pad to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change;

[0015] The rib modular coil platter is also provided with a corresponding second pad, and an empty slot is provided on the second pad corresponding to the position of each upper convex rib. When the preset number of coil layers is less than the preset height of the upper convex rib, and the difference is relatively large, the corresponding second pad is paved on the upper surface of the second bottom plate of the rib modular coil platter, and each upper convex rib passes through the corresponding empty slot upper convex setting, and the extra height of the upper convex rib is compensated by the second pad, so as to avoid changing the distance between the coil and the ferrite and causing the electromagnetic performance of the coupling mechanism to change;

[0016] When N = 0, the assembled rectangles are all formed by the assembly of modular coils of columns and strips;

[0017] When N is not 0, the central area of ​​the spliced ​​rectangle and the four corners of the peripheral surface area are composed of the column bar modular coil platter, the straight line areas of the four sides of the peripheral surface area of ​​the spliced ​​rectangle are respectively composed of 2L first rib bar modular coil platter and 2K second rib bar modular coil platter, the wound coil is enclosed from the inside to the outside or from the outside to the inside around the peripheral surface area of ​​the spliced ​​rectangle, and the wound coil is guided by the upper convex column on the column bar modular coil platter at the four corners of the spliced ​​rectangle and the four corners of the central area to form corresponding transition angles;

[0018] The two ends of the upper convex ribs on the second bottom plate of the rib modular coil assembly are retracted inwardly relative to the corresponding end sides of the second bottom plate in the length direction, so as to facilitate reliable winding of the coil with a transition angle.

[0019] It is further characterized by:

[0020] Preferably, a=b, and the first bottom plate and the second bottom plate are both square; at this time, the rib modular coil platter is a configuration, which saves material costs.

[0021] A coil winding method for a high-power wireless charging coil structure, characterized in that:

[0022] The outer dimensions of the ground transmitting terminal or the vehicle receiving terminal are set to a rectangle with length = m*a and width = n*b. A modular coil platter with a unit size of a*b is designed. Without re-opening the mold, m*n modular coil disks are used to combine the required outer dimensions of the ground transmitting terminal or the vehicle receiving terminal. At the same time, a convex winding protrusion is preset on the upper surface of the modular coil platter, so that the winding coil can complete the winding operation along the winding protrusion according to the set trajectory.

[0023] It is further characterized by:

[0024] The winding protrusions on the modular coil platter are all upper protrusions, and in this case, the modular coil platter is a column-bar modular coil platter;

[0025] When the winding protrusion on the modular wire drum platter is a combination of an upper protruding column and an upper protruding rib, the modular coil platter includes a column-bar modular coil platter and a rib-bar modular coil platter.

[0026] It is further characterized by:

[0027] The method is not limited to the winding of a single-layer coil, but is also applicable to the winding of a double-layer or even multi-layer coil. The preset height of the upper convex column is not less than the sum of the thicknesses of all layers of the winding coils with the maximum design number of layers in the height dimension; the preset height of the upper convex rib is not less than the sum of the thicknesses of all layers of the winding coils with the maximum design number of layers in the height dimension; when the actual number of winding layers is less than the design number of layers, the extra height can be compensated by a first pad with holes or a second pad with empty slots to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change;

[0028] If there are wound coils of different numbers on the same modular coil assembly plate, the pad can be cut and processed, so the first pad and the second pad are made of materials that are easy to reprocess.

[0029] The column bar modular coil platter is also provided with a corresponding first pad, and holes are arranged on the first pad corresponding to the position of each upper boss. When the preset number of coil layers is less than the preset height of the upper boss, and the difference is relatively large, the corresponding first pad is paved on the upper surface of the first bottom plate of the column bar modular coil platter, and each upper boss passes through the corresponding hole and convexly arranged, and the extra height of the upper boss is compensated by the first pad to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change;

[0030] The rib modular coil platter is also configured with a corresponding second pad, and an empty slot is arranged on the second pad corresponding to the position of each upper convex rib. When the preset number of coil layers is less than the preset height of the upper convex rib and the difference is relatively large, the corresponding second pad is paved on the upper surface of the second bottom plate of the rib modular coil platter, and each upper convex rib passes through the corresponding empty slot and convex setting. The extra height of the upper convex rib is compensated by the second pad to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change.

[0031] After adopting the structure of the present invention, the coil disks of the ground transmitting end and the vehicle receiving end of different sizes are standardized into the column modular coil platter and rib modular coil platter of the smallest unit of the standardized module, which greatly reduces the design and production burden and saves the mold opening cost of the ground transmitting end and the vehicle receiving end each time; in the early stage of product design, the frequent proofing process can be omitted, the coil disks can be combined as needed, and different numbers of turns can be wound to achieve economical and fast initial research and development; in addition, the problem of design scheme changes caused by changes in customer needs can be avoided, so that the compatibility and adaptability of the product are greatly enhanced, and the two schemes of pure column modular coil platter and the combination of column modular coil platter and rib modular coil platter can provide selection and matching to meet the needs of mass production in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional schematic diagram of a column-bar modular coil platter corresponding to the present invention;

[0033] Figure 2 It is a three-dimensional schematic diagram of a rib modular coil platter corresponding to the present invention;

[0034] Figure 3 This is the specific embodiment 1 corresponding to the present invention;

[0035] Figure 4 This is the specific embodiment 2 corresponding to the present invention;

[0036] Figure 5 is a perspective view of a first pad suitable for use in the present invention;

[0037] Figure 6 is a perspective view of a second pad suitable for use in the present invention;

[0038] Figure 7 It is a side view of the arrangement of the column bar modular coil platter when there are single-layer coils and double-layer coils in a specific embodiment of the present invention;

[0039] Figure 8 It is a schematic diagram of the assembly explosion of the present invention applied to the ground transmitting end;

[0040] The names corresponding to the serial numbers in the figure are as follows:

[0041] Column modular coil platter 10, first base plate 11, upper protruding column 12, rib modular coil platter 20, second base plate 21, upper protruding rib 22, embedding groove 23, wound coil 30, spliced ​​rectangle 40, shell 50, ferrite 60, aluminum plate 70, first pad 80, hole 81, second pad 90, empty slot 91. DETAILED DESCRIPTION

[0042] A high-power wireless charging coil structure, see Figure 1-Figure 8 , which includes:

[0043] A modular coil platter 10 of M unit-sized columns, wherein M is a natural number ≥ 1;

[0044] A modular coil platter 20 of ribs of N unit sizes, where N is an integer ≥ 0;

[0045] and a winding coil 30;

[0046] Each column modular coil platter 10 has a rectangular size of a*b, and each column modular coil platter 10 comprises a first bottom plate 11 and a plurality of evenly distributed upper bosses 12, and a plurality of upper bosses 12 are arranged in an array on the upper surface of the first bottom plate 11;

[0047] Each rib modular coil platter 20 has a size of a*b and is a rectangle. Each rib modular coil platter 20 includes a second bottom plate 21 and a plurality of upper convex ribs 22 arranged in parallel. The rib modular coil platter 20 includes a first rib modular coil platter and a second rib modular coil platter. The upper surface of the second bottom plate 21 of the first rib modular coil platter is provided with a plurality of upper convex ribs 22 arranged in parallel along its short sides. The upper surface of the second bottom plate 21 of the second rib modular coil platter is provided with a plurality of upper convex ribs 22 arranged in parallel along its long sides. The spacing between adjacent upper convex ribs 22 is equal to form an embedding groove 23. The width of the embedding groove 23 allows the coil to be reliably embedded and arranged.

[0048] The preset height of the upper boss 12 is not less than the sum of the thicknesses of all layers of the winding coils 30 with the maximum design number of layers in the height dimension; the preset height of the upper convex rib 22 is not less than the sum of the thicknesses of all layers of the winding coils 30 with the maximum design number of layers in the height dimension.

[0049] The column bar modular coil platter 10 is also provided with a corresponding first pad 80, and a hole 81 is provided on the first pad 80 corresponding to the position of each upper boss 12. When the preset number of coil layers is less than the preset height of the upper boss 12, and the difference is relatively large, the corresponding first pad 80 is paved on the upper surface of the first bottom plate 11 of the column bar modular coil platter 10, and each upper boss 12 is convexly arranged through the corresponding hole 81, and the extra height of the upper boss 12 is compensated by the first pad 80, so as to avoid changing the distance between the coil and the ferrite and causing the electromagnetic performance of the coupling mechanism to change;

[0050] The rib modular coil platter 20 is also configured with a corresponding second pad 90, and an empty slot 91 is provided on the second pad 90 corresponding to the position of each upper convex rib. When the preset number of coil layers is less than the preset height of the upper convex rib 22 and the difference is relatively large, the corresponding second pad 90 is laid on the upper surface of the second bottom plate 21 of the rib modular coil platter 20, and each upper convex rib 22 passes through the corresponding empty slot 91 and is convexly arranged. The extra height of the upper convex rib is compensated by the second pad 90 to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change.

[0051] In a specific embodiment, the preset height of the upper protrusion 12 is not less than the sum of the stacking thicknesses of all coils when the winding coil 30 is two layers, and the height of the upper protrusion rib 22 is not less than the sum of the stacking thicknesses of all coils when the winding coil 30 is two layers.

[0052] M column modular coil platters 10 and N rib modular coil platters 20 are assembled to form an assembled rectangle 40 of a preset shape. There is no wound coil 30 in the central area of ​​the assembled rectangle 40, and the wound coil 30 is enclosed around the outer surface of the assembled rectangle 40 from the inside to the outside or from the outside to the inside.

[0053] In a specific embodiment, when the winding coil 30 is preset to be two layers, the height of the upper protrusion 12 is higher than the thickness of the two layers of the winding coil 30; the height of the upper protrusion rib 22 is higher than the thickness of the two layers of the winding coil 30, ensuring reliable protection for the winding coil 30;

[0054] In a specific embodiment, when the winding coil 30 is preset to include one or two layers, the first bottom plate 11 of the column bar modular coil assembly plate 10 having only one layer of winding coil is paved with a first pad 80 (see Figure 7 ), a second pad 90 is paved on the second bottom plate 21 of the modular coil platter 20 with only one layer of coil winding (see Figure 7 Similar paving can be used).

[0055] When N=0, all the assembled rectangles are formed by assembling the column-bar modular coil assemblies 10 .

[0056] When N is not 0, the central area of ​​the spliced ​​rectangle 40 and the four corners of the peripheral surface area are composed of column bar modular coil assemblies 10, and the straight line areas of the four sides of the peripheral surface area of ​​the spliced ​​rectangle 40 are respectively composed of 2L first rib bar modular coil assemblies and 2K second rib bar modular coil assemblies. The wound coil 30 is enclosed from the inside to the outside or from the outside to the inside around the peripheral surface area of ​​the spliced ​​rectangle 40. The wound coil 30 is guided by the upper protrusions 12 on the column bar modular coil assemblies 10 at the four corners of the spliced ​​rectangle 40 and the four corners of the central area to form corresponding transition angles;

[0057] The two ends of the upper convex ribs 22 on the second bottom plate 21 of the rib modular coil platter 20 in the length direction are retracted relative to the corresponding end sides of the second bottom plate 21, so as to facilitate reliable winding of the coil with a transition angle.

[0058] When a=b, the first bottom plate 11 and the second bottom plate 21 are both square; at this time, the rib modular coil platter 20 is a configuration, which saves material costs.

[0059] The size of the smallest modular column modular coil platter 10 and the rib modular coil platter 20 is 100*100. The size requirement of the ground transmitting end of the existing target product is 500*400. Then, 20 column modular coil platter 10 can be assembled to form a specific embodiment 1 (see Figure 3, the number of layers of the winding coil 30 in the figure is two), when the number of layers of the winding coil 30 is one layer or part of it is one layer, the first pad 80 or the second pad 90 can be laid at the position of the corresponding modular platter;

[0060] Alternatively, 10 column modular coil assemblies 10 and 10 rib modular coil assemblies 20 are assembled to form a specific embodiment 2 (see Figure 4 , the number of layers of the wound coil 30 in the figure is two), when the number of layers of the wound coil 30 is one layer or part of it is one layer, the first pad 80 or the second pad 90 can be laid at the position of the corresponding modular platter.

[0061] A coil winding method for a high-power wireless charging coil structure:

[0062] The outer dimensions of the ground transmitting terminal or the vehicle receiving terminal are set to a rectangle with length = m*a and width = n*b. A modular coil platter with a design unit size of a*b is designed. Without re-opening the mold, m*n modular coil disks are used to combine the required outer dimensions of the ground transmitting terminal or the vehicle receiving terminal. At the same time, a convex winding protrusion is preset on the upper surface of the modular coil platter, so that the wound coil 30 can complete the winding operation along the winding protrusion according to the set trajectory.

[0063] The winding protrusions on the modular coil platter are all upper protrusions 12, and in this case, the modular coil platter is a column-bar modular coil platter 10;

[0064] When the winding protrusion on the modular wire reel platter is a combination of an upper protruding column 12 and an upper protruding rib 22 , the modular coil platter includes a column modular coil platter 10 and a rib modular coil platter 20 .

[0065] A coil winding method for a high-power wireless charging coil structure is not limited to the winding of a single-layer coil, but is also applicable to the winding of a double-layer or even multi-layer coil. The preset height of the upper convex column 12 is not less than the sum of the thicknesses of all layers of the winding coils 30 with the maximum design number of layers in the height dimension; the preset height of the upper convex rib 22 is not less than the sum of the thicknesses of all layers of the winding coils 30 with the maximum design number of layers in the height dimension; when the actual number of winding layers is less than the design number of layers, the extra height can be compensated by a first pad 80 with holes or a second pad 90 with empty slots to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change;

[0066] If there are different layers of wound coils on the same modular coil assembly plate, the pads can be cut and processed, so the first pad 80 and the second pad 90 are made of materials that are easy to reprocess.

[0067] The column bar modular coil platter 10 is provided with a corresponding first pad 80, and a hole 80 is provided on the first pad 80 corresponding to the position of each upper boss 12. When the preset number of coil layers is less than the preset height of the upper boss 12, and the difference is relatively large, the corresponding first pad 80 is paved on the upper surface of the first bottom plate 11 of the column bar modular coil platter 10, and each upper boss 12 is convexly arranged through the corresponding hole 81, and the extra height of the upper boss 12 is compensated by the first pad 80, so as to avoid changing the distance between the coil and the ferrite and causing the electromagnetic performance of the coupling mechanism to change;

[0068] The rib modular coil platter 20 is provided with a corresponding second pad 90, and an empty slot 91 is provided on the second pad 90 corresponding to the position of each upper convex rib 22. When the preset number of coil layers is less than the preset height of the upper convex rib 22 and the difference is relatively large, the corresponding second pad 90 is laid on the upper surface of the second bottom plate 21 of the rib modular coil platter 20, and each upper convex rib 22 passes through the corresponding empty slot 91 and is convexly arranged. The extra height of the upper convex rib 22 is compensated by the second pad 90 to avoid changing the distance between the coil and the ferrite, which causes the electromagnetic performance of the coupling mechanism to change.

[0069] When the whole method is applied to the production of the ground transmitting end, the modular coil assemblies are fixed one by one on the corresponding position of the upper surface of the housing 50 in advance, and then the winding coil 30 is installed along the setting track to complete the winding operation along the winding protrusion, and then the ferrite 60 and the aluminum plate 70 are stacked respectively (see Figure 8 ).

[0070] Its beneficial effects are as follows:

[0071] (1) The coil disks of the ground transmitter and vehicle receiver of different sizes are standardized into the smallest unit of the standardized module, the column modular coil platter and the rib modular coil platter, which greatly reduces the design and production burden and saves the mold opening cost of the ground transmitter and vehicle receiver each time;

[0072] (2) In the early stage of product design, the frequent proofing process can be omitted, the coil disks can be combined as needed, and different numbers of turns can be wound, thus achieving economical and rapid initial research and development;

[0073] (3) It can avoid the problem of design changes caused by changes in customer needs, greatly enhance the compatibility and adaptability of the product, and provide two options of pure column modular coil platter, column modular coil platter and rib modular coil platter to meet the needs of mass production in the later stage.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0075] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-power wireless charging coil structure, characterized in that: It includes: A modular coil platter of M unit-sized columns, where M is a natural number ≥ 1; A modular coil platter of ribs of N unit sizes, where N is an integer ≥ 0; and winding coils; Each of the column-bar modular coil platter has a size of a*b and is a rectangle. Each of the column-bar modular coil platter comprises a first bottom plate and a plurality of evenly distributed upper convex columns. The upper surface of the first bottom plate is arrayed with a plurality of upper convex columns. Each of the rib modular coil platter is a rectangle with a size of a*b, each of the rib modular coil platter comprises a second bottom plate and a plurality of upper convex ribs arranged in parallel, the rib modular coil platter comprises a first rib modular coil platter and a second rib modular coil platter, the upper surface of the second bottom plate of the first rib modular coil platter is provided with a plurality of upper convex ribs arranged in parallel along its short sides, the upper surface of the second bottom plate of the second rib modular coil platter is provided with a plurality of upper convex ribs arranged in parallel along its long sides, the spacing between adjacent upper convex ribs is equal to form an embedding groove, the width of the embedding groove enables the coil to be reliably embedded and arranged; M of the column modular coil platters and N of the rib modular coil platters are assembled to form a assembled rectangle of a preset shape, wherein there is no wound coil in the central area of ​​the assembled rectangle, and the wound coil is enclosed from the inside to the outside or from the outside to the inside around the outer surface of the assembled rectangle.

2. A high-power wireless charging coil structure according to claim 1, characterized in that: The preset height of the upper boss is not less than the sum of the thicknesses of all layers in the height dimension of all the winding coils of the maximum design number of layers; the preset height of the upper convex rib is not less than the sum of the thicknesses of all layers in the height dimension of the winding coils of the maximum design number of layers.

3. A high-power wireless charging coil structure according to claim 2, characterized in that: The height of the upper protrusion is not less than the sum of the stacking thicknesses of all coils when the coils are wound in two layers, and the height of the upper protrusion rib is not less than the sum of the stacking thicknesses of all coils when the coils are wound in two layers.

4. The high-power wireless charging coil structure according to claim 2, characterized in that: The column bar modular coil platter is also equipped with a corresponding first pad, and holes are arranged on the first pad corresponding to the position of each upper boss. When the preset number of coil layers is less than the preset height of the upper boss, and the difference is relatively large, the corresponding first pad is paved on the upper surface of the first bottom plate of the column bar modular coil platter, and each upper boss passes through the corresponding hole and convexly sets, and the extra height of the upper boss is compensated by the first pad; The rib modular coil platter is also configured with a corresponding second pad, on which an empty slot is provided corresponding to the position of each upper convex rib. When the preset number of coil layers is less than the preset height of the upper convex rib and the difference is relatively large, the corresponding second pad is paved on the upper surface of the second bottom plate of the rib modular coil platter, and each upper convex rib passes through the corresponding empty slot and convexly sets, and the extra height of the upper convex rib is compensated by the second pad.

5. The high-power wireless charging coil structure according to claim 1, characterized in that: When N=0, all the assembled rectangles are formed by assembling modular coil platters.

6. The high-power wireless charging coil structure according to claim 1, characterized in that: When N is not 0, the central area of ​​the spliced ​​rectangle and the four corners of the outer surface area are composed of the column modular coil platter, the straight line areas on the four sides of the outer surface area of ​​the spliced ​​rectangle are respectively composed of 2L first rib modular coil platter and 2K second rib modular coil platter, the wound coil is formed from the inside to the outside or from the outside to the inside around the outer surface area of ​​the spliced ​​rectangle, and the wound coil is guided by the upper protrusions on the column modular coil platter at the four corners of the spliced ​​rectangle and the four corners of the central area to form corresponding transition angles.

7. A high-power wireless charging coil structure according to claim 6, characterized in that: Both ends of the upper convex ribs on the second bottom plate of the rib modular coil platter in the length direction are retracted relative to the corresponding end sides of the second bottom plate.

8. The high-power wireless charging coil structure according to claim 1, characterized in that: a=b, in this case, the first bottom plate and the second bottom plate are both square.

9. A coil winding method using the high-power wireless charging coil structure as claimed in any one of claims 1 to 8, characterized in that: The outer dimensions of the ground transmitting end or the vehicle receiving end are set to a rectangle with length = m*a and width = n*b. A modular coil platter with a unit size of a*b is designed. Without re-opening the mold, m*n modular coil platter is used to combine the required outer dimensions of the ground transmitting end or the vehicle receiving end. At the same time, a convex winding protrusion is preset on the upper surface of the modular coil platter, so that the winding coil can complete the winding operation along the winding protrusion according to the set trajectory; The winding protrusions on the modular coil platter are all upper protrusions, and in this case, the modular coil platter is a column-bar modular coil platter; When the winding protrusion on the modular wire reel platter is a combination of an upper protruding column and an upper protruding rib, the modular coil platter includes a column-bar modular coil platter and a rib-bar modular coil platter.

10. The coil winding method of a high-power wireless charging coil structure according to claim 9, characterized in that: It is not limited to the winding of single-layer coils, but is also suitable for the winding of double-layer or even multi-layer coils. The preset height of the upper convex column is not less than the sum of the thicknesses of all layers in the height dimension of all wound coils with the maximum design number of layers; the preset height of the upper convex rib is not less than the sum of the thicknesses of all layers in the height dimension of the wound coils with the maximum design number of layers; when the actual number of winding layers is less than the designed number of layers, the extra height can be compensated by a first pad with holes or a second pad with empty slots to avoid changing the distance between the coil and the ferrite, which causes changes in the electromagnetic properties of the coupling mechanism.

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