Ignition coil with novel structure for unmanned aerial vehicle

Abstract

The utility model discloses an ignition coil of an unmanned aerial vehicle with a novel structure. The ignition coil comprises a shell with a through hole in the bottom and an opening in the top; the high-voltage electrode is arranged in the through hole in a penetrating manner; the insulating magnetic coil panel is arranged in the shell; the primary coil is wound on the insulating magnetic-conductive coil panel, the secondary coil is wound on the insulating magnetic-conductive coil panel, and one end of the secondary coil is electrically connected with the high-voltage electrode; the rare earth magnetic core is arranged in the insulation magnetic conduction coil panel; the positive terminal is arranged at the tail end of the insulating magnetic coil panel and is positioned at the opening end of the shell; the coil is electrically connected with one end of the primary coil; the negative terminal is arranged at the tail end of the insulating magnetic coil panel and is positioned at the opening end of the shell; the coil is electrically connected with the other end of the primary coil and the other end of the secondary coil; and the insulating glue filling body is arranged in the shell and fills gaps among the insulating magnetic conductive coil panel, the secondary coil, the primary coil and the shell. The utility model has the advantages of simpler and more compact structure, better sealing property and insulativity and longer service life.

Description

Technical Field

[0001] The utility model relates to the field of ignition system parts for aero-engine unmanned aerial vehicles, and in particular to an aero-engine unmanned aerial vehicle ignition coil with a new structure. Background Art

[0002] The ignition coil of an aero-engine drone is an indispensable component of an aero-engine. Through the voltage transformation between the two-stage coil, the low voltage of the battery is converted into a high voltage of tens of thousands of volts, so that the spark plug generates an arc, thereby igniting the gasoline and allowing the engine to work normally.

[0003] The current conventional ignition coil has a complex structure and a large shape. Multiple components are independent of each other and there is no unified sealing structure. In particular, there is air in the secondary coil, which makes high-voltage arcing prone to occur during use. At the same time, the high-voltage electrode of the existing ignition coil is on the same side as the positive electrode and ground electrode of the low-voltage power supply, making the installation and connection complex and the stability low. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide an aero-engine UAV ignition coil of a new structure, which has a simpler and more compact structure, better sealing and insulation, and a longer service life.

[0005] The purpose of the utility model is achieved through such technical solution:

[0006] An ignition coil for an aero-engine UAV of a new structure, comprising:

[0007] a housing having perforations at the bottom and an opening at the top;

[0008] A high voltage electrode is arranged in the perforation;

[0009] An insulating magnetic conductive coil disk is arranged in the housing;

[0010] The primary coil is wound on an insulating magnetic coil disk.

[0011] The secondary coil is wound on an insulating magnetic coil disk and one end of the secondary coil is electrically connected to the high voltage electrode;

[0012] A rare earth magnetic core is arranged in an insulating magnetic conductive coil disk;

[0013] The positive terminal is arranged at the end of the insulating magnetic conductive coil disk and located at the open end of the shell; and is electrically connected to one end of the primary coil;

[0014] The negative terminal is arranged at the end of the insulating magnetic coil disk and located at the open end of the shell; it is electrically connected to the other end of the primary coil and the other end of the secondary coil;

[0015] The insulating colloid is arranged in the shell to fill the gaps between the insulating magnetic coil disk, the secondary coil and the primary coil and the shell.

[0016] Furthermore, the housing comprises:

[0017] The upper shell has a rectangular outer contour and two adjacent side surfaces with rounded corners; the upper end is open and the bottom of the lower end is provided with a perforation; the insulating magnetic coil disk is located in the upper shell;

[0018] The lower shell has a circular tubular outer contour, and its upper end is seamlessly connected to the outer surface of the lower end of the upper shell, and its axis is collinear with the perforation axis; a partition is provided in the middle, and the partition is provided with a through hole; the high-voltage electrode is located in the lower shell, and the upper end passes through the through hole and is located in the upper shell, and is electrically connected to the secondary coil.

[0019] Furthermore, the insulating magnetic conductive coil disk comprises:

[0020] The pipe column is hollow inside, with an open upper end and a closed lower end; the lower end of the pipe column is located inside the lower end of the upper shell; it is coaxially arranged with the upper shell; the rare earth magnetic core is arranged in the pipe column; an inner protruding column is provided on the inner surface of the bottom of the pipe column, and the inner protruding column matches the rare earth magnetic core to limit the position of the rare earth magnetic core; the bottom of the lower end of the upper shell is provided with a protruding ring coaxial with the perforation;

[0021] The chassis is arranged on the outer cylindrical surface of the lower end of the pipe column; the upper end surface of the raised ring abuts against the lower surface of the chassis; a gap is left between the bottom of the lower end of the upper shell and the lower surface of the chassis;

[0022] A plurality of groove winding discs are arranged on the outer cylindrical surface of the chassis in sequence and at intervals; the groove winding discs are provided with winding notches;

[0023] Two terminal fixing parts are arranged on the groove winding disc at the uppermost end of the pipe column, and the positive terminal and the negative positive terminal are fixedly arranged inside.

[0024] Furthermore, the winding notch of the groove winding disc is V-shaped, and a side wall of the winding notch is tangent to the outer cylindrical surface of the pipe column;

[0025] The winding notches on two adjacent groove winding discs are symmetrically arranged around the axis of the pipe column.

[0026] Furthermore, the positive electrode terminal comprises:

[0027] The card embedding part is C-shaped and is located in the terminal fixing piece;

[0028] The electrical connection part is in the shape of a plate, the head end of which is connected to the end of a wing plate of the embedding part, and the opposite side of the tail end is provided with a concave mounting groove;

[0029] The structure of the negative electrode terminal is the same as that of the positive electrode terminal.

[0030] Furthermore, the terminal fixing member comprises:

[0031] The column has a notch groove penetrating the side thereof, and the width of the notch groove is the same as the width of the embedding portion; the column is vertically arranged on the upper surface of the groove winding disk at the uppermost end of the pipe column;

[0032] The step block is arranged on the upper surface of the groove winding disk at the uppermost end of the pipe column and is located in the notch groove. A gap is left between the inner side surface of the step block and the bottom of the notch groove, and a wing plate of the embedded part is inserted in the gap; the groove bottom surface of the embedded part contacts the upper surface of the step block.

[0033] Furthermore, an outer protruding column is provided on the outer surface of the bottom of the pipe column, and the outer protruding column passes through the through hole and is located in the lower shell; the outer cylindrical surface of the outer protruding column contacts the inner wall of the lower shell;

[0034] The bottom of the upper shell is provided with a positioning groove; the lower surface of the chassis is provided with a positioning protrusion matching the positioning groove.

[0035] Furthermore, the lower end surface of the outer protruding column is provided with an inwardly concave groove cavity with an enlarged diameter in the middle;

[0036] The high voltage electrode comprises:

[0037] The high-voltage connection stud has a head end located in the groove cavity and a tail end passing through a through hole and located in the lower shell;

[0038] A limit plate with a T-shaped cross section is arranged at the expanded diameter of the groove cavity and at the bottom of the groove cavity, and the plate surface is connected to the head end of the high-voltage connection stud;

[0039] The terminal block has a head end which is sleeved on the limit plate; and a tail end which passes through the chassis and is located outside the chassis and is electrically connected to one end of the secondary coil.

[0040] Furthermore, the insulating magnetic conductive coil disk also includes:

[0041] A winding drum is sleeved on the outside of a plurality of groove winding drums; a plurality of notches are arranged on the two wing disks of the winding drum, and the lower surface of the notches is flush with the cylindrical surface of the winding drum; the primary coil is wound on the winding drum; and the secondary coil is wound on the plurality of groove winding drums.

[0042] Furthermore, two C-shaped notch pieces are provided on the groove winding disk at the uppermost end of the pipe column, and the notches of the notch pieces point opposite to the axis of the groove winding disk; and a limit block matching the notch pieces is provided on the wing disk of the winding disk.

[0043] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0044] 1. By adopting the winding fixing method of the insulated magnetic coil disk and changing the flat winding method of the coil to the slot winding method, the position of the secondary coil and the high voltage distribution can be better controlled to obtain a more stable high voltage.

[0045] 2. Set the positive terminal, negative terminal and high-voltage electrode at the opposite ends of the shell to facilitate the installation of the ignition coil and circuit connection.

[0046] 3. The components of the utility model are all located in the shell, and an insulating colloid is injected into the shell, so that the components of the ignition coil are more stable, and no gaps are generated between the components, thereby avoiding the occurrence of high-voltage arcs and ensuring the quality and life of the product.

[0047] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings of the present utility model are as follows:

[0049] Figure 1 It is a first three-dimensional structural schematic diagram of the new structure of the aero-engine UAV ignition coil in the embodiment.

[0050] Figure 2 It is a second three-dimensional structural schematic diagram of the new structure of the aero-engine UAV ignition coil in the embodiment.

[0051] Figure 3 It is a front view structural schematic diagram of the novel structure of the aero-engine UAV ignition coil in the embodiment.

[0052] Figure 4 for Figure 3 Schematic diagram of the AA cross-sectional structure.

[0053] Figure 5 for Figure 4 Enlarged structural diagram at B in the middle.

[0054] Figure 6 It is a schematic diagram of the top view of the structure of the aero-engine UAV ignition coil of the new structure in the embodiment.

[0055] Figure 7 for Figure 6 Schematic diagram of the CC cross-section structure.

[0056] Figure 8 It is a three-dimensional structural schematic diagram of a partial structure of an aero-engine UAV ignition coil of a new structure in the embodiment.

[0057] Fig. 9 for Figure 8 Schematic diagram of the structure viewed from above.

[0058] Fig.10 for Fig. 9 Schematic diagram of the DD cross-section structure.

[0059] Fig.11 It is a three-dimensional structural schematic diagram of a partial structure of an aero-engine UAV ignition coil of a new structure in the embodiment.

[0060] In the figure: 11. upper shell; 111. perforation; 112. positioning groove; 12. lower shell; 121. partition; 122. through hole; 21. high-voltage connection stud; 22. limit plate; 23. terminal; 31. pipe column; 311. inner protrusion column; 312. protrusion ring; 313. outer protrusion column; 3131. groove cavity; 32. chassis; 321. positioning protrusion; 33. groove winding disk; 331. winding notch; 341. column; 3411. notch groove; 342. step block; 35. winding disk; 351. notch; 36. notch piece; 37. limit block; 6. positive terminal; 7. negative terminal; 81. embedded part; 82. power connection part; 83. installation groove. DETAILED DESCRIPTION

[0061] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0062] Example:

[0063] like Figures 1 to 11 As shown, a novel structure of an aero-engine UAV ignition coil includes:

[0064] The housing has a perforation 111 at the bottom and an opening at the top;

[0065] A high voltage electrode is inserted into the through hole 111;

[0066] An insulating magnetic conductive coil disk is arranged in the housing;

[0067] The primary coil is wound on an insulating magnetic coil disk.

[0068] The secondary coil is wound on an insulating magnetic coil disk and one end of the secondary coil is electrically connected to the high voltage electrode;

[0069] A rare earth magnetic core (not shown in the figure) is arranged in the insulating magnetic conductive coil disk;

[0070] The positive terminal is arranged at the end of the insulating magnetic conductive coil disk and located at the open end of the shell; and is electrically connected to one end of the primary coil;

[0071] The negative terminal is arranged at the end of the insulating magnetic coil disk and located at the open end of the shell; it is electrically connected to the other end of the primary coil and the other end of the secondary coil;

[0072] The insulating colloid is arranged in the shell to fill the gaps between the insulating magnetic coil disk, the secondary coil and the primary coil and the shell.

[0073] In this embodiment, the housing includes:

[0074] The upper shell 11 has a rectangular outer contour and two adjacent side surfaces with rounded corners; the upper end is open to the outside and a through hole 111 is provided at the bottom of the lower end; the insulating magnetic coil disk is located in the upper shell 11;

[0075] The lower shell 12 has a circular tubular outer contour, and its upper end is seamlessly connected to the outer surface of the lower end of the upper shell 11, and its axis is colinear with the axis of the through hole 111; a partition 121 is provided in the middle, and the partition 121 is provided with a through hole 122; the high-voltage electrode is located in the lower shell 12, and the upper end passes through the through hole 122 and is located in the upper shell 11, and is electrically connected to the secondary coil.

[0076] The upper shell 11 and the lower shell 12 are designed independently, so that the interiors of the two cavities are relatively independent, so that the high-voltage electrode is as little affected by the primary coil and the secondary coil as possible, and the installation and disassembly of the device is convenient.

[0077] In this embodiment, the insulating magnetic conductive coil disk includes:

[0078] The tube column 31 is hollow inside, with an open upper end and a closed lower end; the lower end of the tube column 31 is located inside the lower end of the upper shell 11; it is coaxially arranged with the upper shell 11; the rare earth magnetic core is arranged in the tube column 31; an inner protruding column 311 is provided on the inner surface of the bottom of the tube column 31, and the inner protruding column 311 matches the rare earth magnetic core to limit the position of the rare earth magnetic core; the bottom of the lower end of the upper shell 11 is provided with a protruding ring 312 coaxial with the through hole 111;

[0079] The chassis 32 is arranged on the outer cylindrical surface of the lower end of the pipe column 31; the upper end surface of the raised ring 312 abuts against the lower surface of the chassis 32; a gap is left between the bottom of the lower end of the upper shell 11 and the lower surface of the chassis 32;

[0080] A plurality of groove winding discs 33 are sequentially arranged at intervals on the outer cylindrical surface of the bottom plate 32; the groove winding discs 33 are provided with winding notches 331;

[0081] Two terminal fixing parts are arranged on the groove winding disc 33 at the uppermost end of the tube column 31, and the positive terminal and the negative positive terminal are fixedly arranged inside.

[0082] After the high-voltage coil adopts shielded copper wire with high anti-interference performance, the primary coil and the secondary coil can be wound into all the slot winding disks 33 to reduce the winding height and the volume of the utility model; the primary coil and the secondary coil can also be separately wound into their respective corresponding slot winding disks 33 to ensure that the high voltage will not affect the primary coil.

[0083] At the same time, the slot winding method can better control the distribution of the winding, stabilize the magnetic flux, and ensure that the generated high voltage is more stable and accurate.

[0084] In this embodiment, the winding notch 331 of the groove winding disc 33 is V-shaped, and a side wall of the winding notch 331 is tangent to the outer cylindrical surface of the pipe column 31;

[0085] The winding notches 331 on two adjacent groove winding discs 33 are symmetrically arranged around the axis of the pipe column 31 .

[0086] The notch can facilitate the winding copper wire to enter from one winding groove into another winding groove, ensuring the continuity of the copper wire.

[0087] In this embodiment, the positive electrode terminal comprises:

[0088] The embedding portion 81 is C-shaped and is located inside the terminal fixing member;

[0089] The power connection part 82 is in the shape of a plate, the head end of which is connected to the end of a wing plate of the locking part 81, and the opposite side of the tail end is provided with a concave mounting groove 83;

[0090] The structure of the negative electrode terminal is the same as that of the positive electrode terminal.

[0091] In this embodiment, the terminal fixing member includes:

[0092] The column 341 has a notch groove 3411 extending therethrough on its side, and the width of the notch groove 3411 is the same as the width of the locking portion 81; the column 341 is vertically arranged on the upper surface of the groove winding disk 33 at the uppermost end of the column 31;

[0093] The step block 342 is arranged on the upper surface of the groove winding disk 33 at the uppermost end of the pipe column 31 and is located in the notch groove 3411. A gap is left between the inner side surface of the step block 342 and the bottom of the notch groove 3411, and a wing plate of the embedded part 81 is inserted in the gap; the bottom surface of the groove of the embedded part 81 contacts the upper surface of the step block 342.

[0094] The embedded portion 81 is embedded and limited in the notch groove 3411, so that it is stabilized, and the electrical installation groove 83 can facilitate external wire connection and welding.

[0095] In this embodiment, an outer protrusion column 313 is provided on the outer surface of the bottom of the tube column 31. The outer protrusion column 313 passes through the through hole 111 and is located in the lower shell 12. The outer cylindrical surface of the outer protrusion column 313 contacts the inner wall of the lower shell 12.

[0096] A positioning groove 112 is formed at the bottom of the upper shell 11 ; a positioning protrusion 321 matching the positioning groove 112 is formed on the lower surface of the chassis 32 .

[0097] The outer protruding column 313 is relatively limited with the lower shell 12, so that the pipe column 31 can be better fixed. At the same time, the cooperation between the positioning groove 112 and the positioning protrusion 321 makes the installation more accurate and convenient.

[0098] In this embodiment, the lower end surface of the outer protruding column 313 is provided with an inwardly concave groove cavity 3131 with an enlarged diameter in the middle;

[0099] The high voltage electrode comprises:

[0100] The high-voltage connecting stud 21 has a head end located in the groove cavity 3131 and a tail end passing through the through hole 122 and located in the lower housing 12;

[0101] The limiting plate 22 with a T-shaped cross section is arranged at the expanded diameter of the groove cavity 3131 and at the bottom of the groove cavity 3131, and the plate surface is connected to the head end of the high-voltage connection stud 21;

[0102] The terminal block 23 has a head end which is sleeved on the limiting plate 22 ; and a tail end which passes through the chassis 32 and is located outside the chassis 32 , and is electrically connected to one end of the secondary coil.

[0103] The groove cavity 3131 fixes the high voltage electrode so that the high voltage electrode and the pipe column 31 are stably connected.

[0104] In this embodiment, the insulating magnetic conductive coil disk further includes:

[0105] The winding drum 35 is sheathed on the outer side of the plurality of grooved winding drums 33; a plurality of notches 351 are provided on the two wing disks of the winding drum 35, and the lower surface of the notches 351 is flush with the cylindrical surface of the winding drum 35; the primary coil is wound on the winding drum 35; and the secondary coil is wound on the plurality of grooved winding drums 33.

[0106] The primary coil and the secondary coil are in an inner sleeve structure, so that the volume can be further optimized and reduced. At the same time, the primary coil and the secondary coil are physically isolated to avoid breakdown.

[0107] In this embodiment, two C-shaped notch pieces 36 are provided on the groove winding disk 33 at the uppermost end of the pipe column 31, and the notches of the notch pieces 36 point opposite to the axis of the groove winding disk 33; a limit block 37 matching the notch pieces 36 is provided on the wing disk of the winding disk 35.

[0108] The notch 36 and the limiting block 37 can limit the winding reel 35 and the insulating magnetic coil reel together.

[0109] The new structure of the aero-engine UAV ignition coil of this embodiment is produced and used as follows: the terminal 23 is spot welded to the limit plate 22 or the terminal 23, the wire reel and the high-voltage connection stud 21 are directly formed as one piece; then the high-voltage electrode is injection molded into an integrated structure with the chassis 32, the pipe column 31 and the groove winding disk 33 by injection molding.

[0110] According to the index requirements of the ignition coil, the corresponding number of turns of copper wire are wound on the pipe column 31 and the winding drum 35 respectively; then the winding drum 35 is placed outside the groove winding drum 33, and the limit block 37 and the notch piece 36 are limited in a corresponding manner.

[0111] After the positive electrode terminal and the negative electrode terminal are connected to the external wires, they are inserted into the corresponding wiring fixtures, and then the primary coil and the secondary coil are electrically connected to their corresponding components.

[0112] The electrically connected tube column 31 and winding reel 35 are inserted into the shell so that the positioning groove 112 and the positioning protrusion 321 correspond to each other; finally, an insulating potting gel is injected into the shell to completely submerge the parts, leaving only the shell where the external wires extend outward. After the insulating potting gel is solidified, the production of the ignition coil is completed. When in use, the device can be connected to the spark plug through the high-voltage connecting stud 21.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A novel structure of an aero-engine UAV ignition coil, characterized in that: include: a housing having perforations at the bottom and an opening at the top; A high voltage electrode is arranged in the perforation; An insulating magnetic conductive coil disk is arranged in the housing; The primary coil is wound on an insulating magnetic coil disk. The secondary coil is wound on an insulating magnetic coil disk and one end of the secondary coil is electrically connected to the high voltage electrode; A rare earth magnetic core is arranged in an insulating magnetic conductive coil disk; The positive terminal is arranged at the end of the insulating magnetic conductive coil disk and located at the open end of the shell; and is electrically connected to one end of the primary coil; The negative terminal is arranged at the end of the insulating magnetic coil disk and located at the open end of the shell; it is electrically connected to the other end of the primary coil and the other end of the secondary coil; The insulating colloid is arranged in the shell to fill the gaps between the insulating magnetic coil disk, the secondary coil and the primary coil and the shell.

2. The novel structure of the aero-engine UAV ignition coil according to claim 1 is characterized in that: The housing comprises: The upper shell has a rectangular outer contour and two adjacent side surfaces with rounded corners; the upper end is open and the bottom of the lower end is provided with a perforation; the insulating magnetic coil disk is located in the upper shell; The lower shell has a circular tubular outer contour, and its upper end is seamlessly connected to the outer surface of the lower end of the upper shell, and its axis is collinear with the perforation axis; a partition is provided in the middle, and the partition is provided with a through hole; the high-voltage electrode is located in the lower shell, and the upper end passes through the through hole and is located in the upper shell, and is electrically connected to the secondary coil.

3. The novel structure of the aero-engine UAV ignition coil according to claim 2 is characterized in that: The insulating magnetic conductive coil disk comprises: The pipe column is hollow inside, with an open upper end and a closed lower end; the lower end of the pipe column is located inside the lower end of the upper shell; it is coaxially arranged with the upper shell; the rare earth magnetic core is arranged in the pipe column; an inner protruding column is provided on the inner surface of the bottom of the pipe column, and the inner protruding column matches the rare earth magnetic core to limit the position of the rare earth magnetic core; the bottom of the lower end of the upper shell is provided with a protruding ring coaxial with the perforation; The chassis is arranged on the outer cylindrical surface of the lower end of the pipe column; the upper end surface of the raised ring abuts against the lower surface of the chassis; a gap is left between the bottom of the lower end of the upper shell and the lower surface of the chassis; A plurality of groove winding discs are arranged on the outer cylindrical surface of the chassis in sequence and at intervals; the groove winding discs are provided with winding notches; Two terminal fixing parts are arranged on the groove winding disc at the uppermost end of the pipe column, and the positive terminal and the negative positive terminal are fixedly arranged inside.

4. The novel structure of the aero-engine UAV ignition coil according to claim 3 is characterized in that: The winding notch of the groove winding disc is V-shaped, and one side wall of the winding notch is tangent to the outer cylindrical surface of the pipe column; The winding notches on two adjacent groove winding discs are symmetrically arranged around the axis of the pipe column.

5. The novel structure of the aero-engine UAV ignition coil according to claim 3 is characterized in that: The positive electrode terminal comprises: The card embedding part is C-shaped and is located in the terminal fixing piece; The electrical connection part is in the shape of a plate, the head end of which is connected to the end of a wing plate of the embedding part, and the opposite side of the tail end is provided with a concave mounting groove; The structure of the negative electrode terminal is the same as that of the positive electrode terminal.

6. The novel structure of the aero-engine UAV ignition coil according to claim 5 is characterized in that: The terminal fixing member comprises: The column has a notch groove penetrating the side thereof, and the width of the notch groove is the same as the width of the embedding portion; the column is vertically arranged on the upper surface of the groove winding disk at the uppermost end of the pipe column; The step block is arranged on the upper surface of the groove winding disk at the uppermost end of the pipe column and is located in the notch groove. A gap is left between the inner side surface of the step block and the bottom of the notch groove, and a wing plate of the embedded part is inserted in the gap; the groove bottom surface of the embedded part contacts the upper surface of the step block.

7. The novel structure of the aero-engine UAV ignition coil according to claim 3 is characterized in that: An outer protruding column is provided on the outer surface of the bottom of the pipe column, and the outer protruding column passes through the through hole and is located in the lower shell body; the outer cylindrical surface of the outer protruding column contacts the inner wall of the lower shell body; The bottom of the upper shell is provided with a positioning groove; the lower surface of the chassis is provided with a positioning protrusion matching the positioning groove.

8. The novel structure of the aero-engine UAV ignition coil according to claim 7 is characterized in that: The lower end surface of the outer protruding column is provided with an inwardly concave groove cavity with an enlarged diameter in the middle; The high voltage electrode comprises: The high-voltage connection stud has a head end located in the groove cavity and a tail end passing through a through hole and located in the lower shell; A limit plate with a T-shaped cross section is arranged at the expanded diameter of the groove cavity and at the bottom of the groove cavity, and the plate surface is connected to the head end of the high-voltage connection stud; The terminal block has a head end which is sleeved on the limit plate; and a tail end which passes through the chassis and is located outside the chassis and is electrically connected to one end of the secondary coil.

9. The novel structure of the aero-engine UAV ignition coil according to claim 3 is characterized in that: The insulating magnetic conductive coil disk also includes: A winding drum is sleeved on the outside of a plurality of groove winding drums; a plurality of notches are arranged on the two wing disks of the winding drum, and the lower surface of the notches is flush with the cylindrical surface of the winding drum; the primary coil is wound on the winding drum; and the secondary coil is wound on the plurality of groove winding drums.

10. The novel structure of the aero-engine UAV ignition coil according to claim 9 is characterized in that: The groove winding disk at the uppermost end of the pipe column is provided with two C-shaped notch pieces, and the notches of the notch pieces point opposite to the axis of the groove winding disk; the wing disk of the winding disk is provided with a limit block matching the notch pieces.

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