Electric field type unmanned aerial vehicle wireless charging device based on oily dielectric layer

Abstract

The invention discloses an electric field type unmanned aerial vehicle wireless charging device based on an oily dielectric layer, and relates to the technical field of charging devices. The electric field type unmanned aerial vehicle wireless charging device comprises a transmitting unit, an unmanned aerial vehicle unit and a protection unit. The transmitting unit comprises a charging seat with two liquid storage tanks; the unmanned aerial vehicle unit comprises an unmanned aerial vehicle body, an undercarriage arranged on the unmanned aerial vehicle body and a charging assembly arranged on the charging base and the undercarriage. The protection unit is arranged on the charging base in a sliding mode and connected with the undercarriage in a clamped mode. The transmitting unit comprises a shell and a table top arranged on the shell; and the charging seat is embedded in the table top. According to the electric field type unmanned aerial vehicle wireless charging device based on the oily dielectric layer, the unmanned aerial vehicle unit can be fixed, and it is guaranteed that the unmanned aerial vehicle unit can be continuously and efficiently charged.

Description

Technical Field

[0001] The present invention relates to the technical field of charging devices, and in particular to an electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer. Background Art

[0002] In the field of wireless power transmission, there are already applications that use capacitors as the basis of electric fields to achieve electric field coupling. Usually, different dielectrics and materials are used to form a capacitor structure. The process of electric energy transmission is achieved through the formation and transmission of electric fields. Traditional dielectric materials may not be able to effectively expel air, resulting in the capacitor structure being not tight enough, affecting the stability of the electric field and transmission efficiency. Considering the capacitor medium in the electric field coupling wireless charging system, if it is air, its dielectric constant is not high, and the capacitance value of the capacitor formed in the end is small, which makes it difficult to meet the requirements of high-power charging.

[0003] In actual use, since the drone is not fixed by a fixing device after falling onto the launching unit, it is easy for the drone to be displaced during use, affecting high-power charging. Summary of the invention

[0004] In view of the problems existing in the above-mentioned existing electric field type wireless charging device for unmanned aerial vehicles based on oily dielectric layer, the present invention is proposed.

[0005] Therefore, the present invention provides an electric field type UAV wireless charging device based on an oily dielectric layer, the purpose of which is to solve the technical problem that after the UAV falls on the transmitting unit, it is not fixed by a fixing device, resulting in the UAV being easily displaced during use, thereby affecting high-power charging.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0007] a transmitting unit including a charging base having two liquid reservoirs;

[0008] A drone unit, comprising a drone body, a landing gear disposed on the drone body, and a charging assembly disposed on the charging seat and the landing gear; and,

[0009] The protection unit is slidably arranged on the charging seat and is engaged with the landing gear.

[0010] As a preferred solution of the electric field type wireless charging device for unmanned aerial vehicles based on the oily dielectric layer described in the present invention, the transmitting unit includes a shell and a table arranged on the shell; the charging seat is embedded in the table.

[0011] As a preferred solution of the electric field type UAV wireless charging device based on the oily dielectric layer described in the present invention, the charging component includes an emitting plate arranged in the liquid storage tank, a receiving plate arranged on the landing gear, and an oily dielectric layer filled in the emitting plate.

[0012] As a preferred solution of the electric field type unmanned aerial vehicle wireless charging device based on the oily dielectric layer of the present invention, wherein: the charging seat is provided with an installation groove for installing the protection unit, and the protection unit includes two U-shaped buckles that are slidably arranged on the charging seat and clamped with the landing gear, a driving component that is arranged on the charging seat and used to drive the U-shaped buckles to move, two sealing components that are slidably arranged on the charging seat and sealed with the liquid storage tank, and a limit component that is rotatably arranged on the charging seat and clamped with the sealing component.

[0013] As a preferred solution of the electric field type unmanned aerial vehicle wireless charging device based on the oily dielectric layer of the present invention, wherein: the protection unit also includes a support assembly for supporting the U-shaped buckle, the drive assembly and the sealing assembly; the support assembly includes a T-shaped frame arranged on the charging base, and two guide rails both arranged on the T-shaped frame; the U-shaped buckle is slidably connected to the guide rail.

[0014] As a preferred solution of the electric field type unmanned aerial vehicle wireless charging device based on the oily dielectric layer of the present invention, the driving component includes a driving motor arranged on the charging seat, a gear arranged on the output end of the driving motor, two racks respectively arranged on the two U-shaped buckles and meshingly connected to the gears, and an elastic member 1 arranged on the guide rail and connected to the U-shaped buckle and the T-shaped frame at both ends.

[0015] As a preferred solution of the electric field type unmanned aerial vehicle wireless charging device based on the oily dielectric layer described in the present invention, wherein: the sealing component includes a sealing plate slidably arranged on the charging seat and clamped with the limit assembly, a push plate arranged on the sealing plate and slidably connected to the guide rail and abutted against the U-shaped buckle, an elastic member arranged on the guide rail and connected to the T-shaped frame and the push plate at both ends respectively, and a guide strip arranged on the charging seat and located on both sides of the liquid storage tank; the sealing plate is slidably connected to the guide strip.

[0016] As a preferred solution of the electric field type wireless charging device for unmanned aerial vehicles based on the oily dielectric layer of the present invention, the push plate is provided with a through groove for the elastic member 1 to pass through.

[0017] As a preferred solution of the electric field type UAV wireless charging device based on the oily dielectric layer of the present invention, the limiting component rotates a rotating shaft arranged on the charging base, a push rod arranged on the rotating shaft and slidably connected to the landing gear, a limiting rod arranged on the rotating shaft and abutting against the sealing plate, and a torsion spring arranged on the charging base for driving the rotating shaft to rotate.

[0018] As a preferred solution of the electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer described in the present invention, a fluid replenishment component is provided on the charging seat, and the output end of the fluid replenishment component is located in the two fluid storage tanks.

[0019] The beneficial effects of the present invention are as follows: the U-shaped buckle is driven to move by the driving assembly so that the U-shaped buckle is stuck on the landing gear, thereby solving the technical problem that the UAV is easily displaced during use and affects high-power charging because the UAV is not fixed by a fixing device after falling onto the launching unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The figure is a schematic diagram of the overall structure of the electric field type wireless charging device for unmanned aerial vehicles based on the oily dielectric layer of the present invention.

[0022] Figure 2 It is a schematic structural diagram of a drone unit in an electric field type drone wireless charging device based on an oily dielectric layer of the present invention.

[0023] Figure 3 This is a schematic diagram of the partially expanded structure of the electric field type wireless charging device for unmanned aerial vehicles based on the oily dielectric layer of the present invention.

[0024] Figure 4 This is a partial structural cross-sectional view of the electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to the present invention.

[0025] Figure 5 This is a schematic diagram of the partial structure of the electric field type wireless charging device for unmanned aerial vehicles based on the oily dielectric layer of the present invention.

[0026] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0027] Figure 7The figure is a schematic diagram of the structure of the limiting component in the electric field type wireless charging device for unmanned aerial vehicles based on the oily dielectric layer of the present invention. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0032] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides an electric field type wireless charging device for drones based on an oily dielectric layer, the device comprising a transmitting unit 100, a drone unit 200, and a protection unit 300;

[0033] The transmitting unit 100 includes a charging base 103 having two liquid storage tanks 103a; the drone unit 200 includes a drone body 201, a landing gear 202 disposed on the drone body 201, and a charging assembly 203 disposed on the charging base 103 and the landing gear 202; the protection unit 300 is slidably disposed on the charging base 103 and is engaged with the landing gear 202. The transmitting unit 100 includes a housing 101, a table 102 disposed on the housing 101; and the charging base 103 is embedded in the table 102.

[0034] Among them, the charging seat 103 is provided with an installation groove 103b for installing the protection unit 300, and the protection unit 300 includes two U-shaped buckles 301 that are slidably set on the charging seat 103 and clamped with the landing gear 202, a driving component 302 that is set on the charging seat 103 and used to drive the U-shaped buckles 301 to move, two sealing components 303 that are slidably set on the charging seat 103 and sealedly connected to the liquid storage tank 103a, and a limiting component 305 that is rotatably set on the charging seat 103 and clamped with the sealing component 303.

[0035] During use, the shell 101 serves as a supporting structure to support the table 102 and the charging seat 103. When the drone unit 200 falls, the driving assembly 302 drives the U-shaped buckle 301 to move, so that the U-shaped buckle 301 drives the sealing assembly 303 to move, so that the sealing assembly 303 exposes the liquid reservoir 103a, so that the landing gear 202 can fall into the liquid reservoir 103a for wireless charging. After the landing gear 202 falls into the liquid reservoir 103a, the driving assembly 302 drives the U-shaped buckle 301 to move, so that the U-shaped buckle 301 clamps the landing gear 2 02, fix the landing gear 202 to ensure the stability of charging, and ensure that the distance between the drive motor 302a and the gear 302b is always within the range of reliable charging. After charging is completed, the drive component 302 drives the U-shaped buckle 301 to separate from the landing gear 202, so that the drone body 201 can take off. Then, when the drone unit 200 takes off, the sealing component 303 will move to the top of the liquid storage tank 103a to block the liquid storage tank 103a and prevent dust from entering the liquid storage tank 103a, thereby protecting the liquid storage tank 103a.

[0036] Example 2, reference Figure 1 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the charging component 203 includes an emitter plate 203a arranged in the liquid storage tank 103a, a receiving plate 203b arranged on the landing gear 202, and an oily dielectric layer filled in the emitter plate 203a.

[0037] Furthermore, a refilling assembly 104 is provided on the charging base 103, and the output end of the refilling assembly 104 is located in the two liquid storage tanks 103a. The refilling assembly 104 can replenish the oily dielectric layer in time to prevent the use from being affected by the insufficient liquid level of the oily dielectric layer.

[0038] During use, considering the situation of the capacitor medium in the electric field coupled wireless charging system, if it is air, its dielectric constant is not high, and the capacitance value of the capacitor finally formed is small, which makes it difficult to meet the requirements of high-power charging; therefore, the oily dielectric layer uses castor oil, and the dielectric constant of castor oil is 4.5-5.2, which is the highest among common oils; a fluorosilane polymer coating is provided on the receiving plate 203b, and the fluorosilane polymer coating has a super oleophobic effect, which can prevent the receiving plate 203b from taking away castor oil.

[0039] The lower end of the landing gear 202 is in contact with the emitter plate 203a, so that there is a gap d between the receiving plate 203b and the emitter plate 203a; the value of d is 0.5mm-1.0mm, and the specification of the receiving plate 203b is set to 1.5cm×15cm. The capacitance value formed by the emitter plate 203a and the receiving plate 203b is calculated to be:

[0040]

[0041] Where, ε0=8.854187817×10 -12 is the value of the vacuum dielectric constant,

[0042] A is the area of ​​the receiving plate 203b,

[0043] ε r is the dielectric constant of castor oil,

[0044] The capacitance value is calculated using castor oil as the dielectric. The middle value of the dielectric constant of castor oil is used as the calculation basis, that is, ε r =4.85 (take the average of 4.05 and 5.2 to simplify the calculation);

[0045] Substitute the known values ​​into the formula to calculate the capacitance value:

[0046] According to the calculation results, when castor oil is used as the medium, the capacitance value is between 90.5pF and 181pF when the spacing is 0.5mm-1mm, so it can meet the needs of high-power charging.

[0047] Plate spacing (mm) Capacitance(pF) Impedance of capacitor (Ω) 0.5 181 44.3 0.75 135.7 56.8 1 90.5 85.3

[0048] From the above data, it can be seen that when the distance between the plates is greater than 1mm, the capacitance value will decrease, and the decrease in capacitance value will lead to an increase in impedance, which will have an adverse effect on signal transmission or energy storage, and will cause the capacitance value to fail to meet the requirements of high-power charging.

[0049] When the capacitance value is less than 0.5mm, although the capacitance value will increase, it is easy to cause the dielectric breakdown under high voltage, causing the current to directly pass through the dielectric to form a short circuit, which is equivalent to the two plates of the capacitor being directly connected. The current can flow freely without resistance or reactance to limit it, resulting in the loss of the capacitor's function.

[0050] The remaining structures are the same as those of Example 1.

[0051] Example 3, reference Figure 1 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the protection unit 300 also includes a support assembly 304 for supporting the U-shaped buckle 301, the driving assembly 302 and the sealing assembly 303; the support assembly 304 includes a T-shaped frame 304a arranged on the charging base 103, and two guide rails 304b both arranged on the T-shaped frame 304a; the U-shaped buckle 301 is slidably connected to the guide rail 304b.

[0052] Furthermore, the driving assembly 302 includes a driving motor 302a arranged on the charging base 103, a gear 302b arranged on the output end of the driving motor 302a, two racks 302c respectively arranged on two U-shaped buckles 301 and meshingly connected with the gear 302b, and an elastic member 302d arranged on the guide rail 304b and connected to the U-shaped buckle 301 and the T-shaped frame 304a at both ends.

[0053] During use, the gear 302b is driven to rotate by the driving motor 302a, and the gear 302b drives the two racks 302c to move, and the racks 302c drive the U-shaped buckle 301 to move, so that the two U-shaped buckles 301 move at the same time. When the driving motor 302a stops, the elastic member 302d will push the U-shaped buckle 301 to move, so that the U-shaped buckle 301 is inserted into the landing gear 202, fix the landing gear 202, and prevent the landing gear 202 from moving.

[0054] The remaining structure is the same as that of Example 2.

[0055] Example 4, reference Figure 1, which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that: the sealing component 303 includes a sealing plate 303a slidably arranged on the charging seat 103 and engaged with the limit component 305, a push plate 303b arranged on the sealing plate 303a and slidably connected to the guide rail 304b and abutting against the U-shaped buckle 301, an elastic member 303c arranged on the guide rail 304b and connected to the T-shaped frame 304a and the push plate 303b at both ends, and a guide bar 303d arranged on the charging seat 103 and located on both sides of the liquid storage tank 103a; the sealing plate 303a is slidably connected to the guide bar 303d, and the guide bar 303d can guide the sealing plate 303a so that the sealing plate 303a is always pressed against the top of the liquid storage tank 103a; the sealing component 303 can block and seal the liquid storage tank 103a to prevent external dust from entering the liquid storage tank 103a.

[0056] Furthermore, a through slot for the elastic member 302d to pass through is provided on the push plate 303b, and the elastic member 302d can pass through the through slot, so that the elastic member 302d can directly push the U-shaped buckle 301 to move without being interfered by the push plate 303b.

[0057] Among them, the limiting assembly 305 rotates a rotating shaft 305a set on the charging base 103, a push rod 305b set on the rotating shaft 305a and slidably connected to the landing gear 202, a limiting rod 305c set on the rotating shaft 305a and abutting against the sealing plate 303a, and a torsion spring 305d set on the charging base 103 for driving the rotating shaft 305a to rotate.

[0058] Among them, a storage groove for accommodating the torsion spring 305d and a clamping groove for clamping the torsion spring 305d are provided on the rotating shaft 305a. The storage groove is used to embed the torsion spring 305d to store the torsion spring 305d, and the clamping groove is used to clamp one end of the torsion spring 305d, and the other end of the torsion spring 305d is clamped on the charging seat 103, so as to drive the rotating shaft 305a to rotate.

[0059] During use, when the sealing plate 303a is opened, since the U-shaped buckle 301 needs to be opened at the same time, when the driving component 302 drives the U-shaped buckle 301 to move, it will also drive the push plate 303b to move, so that the push plate 303b drives the sealing plate 303a to move, thereby causing the sealing plate 303a to move away from the liquid storage tank 103a, thereby exposing the liquid storage tank 103a. When the push plate 303b moves, it will compress the elastic member 303c, so that the landing gear 202 can fall into the liquid storage tank 103a.

[0060] After the landing gear 202 falls into the liquid storage tank 103a, it will push the push rod 305b to move, and the push rod 305b will drive the rotating shaft 305a to rotate, and the rotating shaft 305a will drive the limiting rod 305c to move, so that the upper end of the limiting rod 305c protrudes from the liquid storage tank 103a, so that the limiting rod 305c blocks the sealing plate 303a to prevent the sealing plate 303a from moving and jamming the landing gear 202.

[0061] When the drone unit 200 takes off, the landing gear 202 will be separated from the push rod 305b. At this time, the torsion spring 305d drives the rotating shaft 305a to rotate, and the rotating shaft 305a drives the push rod 305b and the limit rod 305c to flip, so that the push rod 305b rotates to a horizontal position; and the limit rod 305c is pressed against the charging seat 103 for limiting, and is embedded in the charging seat 103, so as not to block the sliding of the sealing plate 303a, so that the elastic member 303c pushes the push plate 303b to move, and the push plate 303b drives the sealing plate 303a to move, covering the top of the liquid storage tank 103a to prevent dust and impurities from entering the liquid storage tank 103a.

[0062] By the sliding contact between the push plate 303b and the U-shaped buckle 301, the U-shaped buckle 301 can simultaneously push the push plate 303b and the sealing plate 303a to move when it moves, so that the sealing plate 303a can open simultaneously with the movement of the U-shaped buckle 301, and the limiting component 305 allows the sealing plate 303a to continue to move without following the U-shaped buckle 301, so that when the U-shaped buckle 301 is stuck on the landing gear 202, the sealing plate 303a is in a non-sealed state, which is convenient for use; and the structure of the limiting component 305 allows the sealing plate 303a to be automatically released after the landing gear 202 is moved out of the liquid storage tank 103a, so that the sealing plate 303a can cover the liquid storage tank 103a.

[0063] The remaining structure is the same as that of Example 3.

[0064] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0065] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An electric field type wireless charging device for drones based on an oily dielectric layer, characterized in that: include, A transmitting unit (100) comprises a charging base (103) having two liquid storage tanks (103a); A drone unit (200) comprises a drone body (201), a landing gear (202) arranged on the drone body (201), and a charging assembly (203) arranged on the charging seat (103) and the landing gear (202); and, A protection unit (300) is slidably disposed on the charging seat (103) and is engaged with the landing gear (202).

2. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 1, characterized in that: The transmitting unit (100) comprises a shell (101) and a table top (102) arranged on the shell (101); the charging seat (103) is embedded in the table top (102).

3. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 2, characterized in that: The charging component (203) includes an emitter plate (203a) arranged in the liquid storage tank (103a), a receiving plate (203b) arranged on the landing gear (202), and an oily dielectric layer filled in the emitter plate (203a).

4. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 3, characterized in that: The charging seat (103) is provided with a mounting groove (103b) for mounting the protection unit (300), and the protection unit (300) comprises two U-shaped buckles (301) slidably arranged on the charging seat (103) and engaged with the landing gear (202), a driving component (302) arranged on the charging seat (103) for driving the U-shaped buckles (301) to move, two sealing components (303) slidably arranged on the charging seat (103) and sealedly connected to the liquid storage tank (103a), and a limit component (305) rotatably arranged on the charging seat (103) and engaged with the sealing component (303).

5. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 4, characterized in that: The protection unit (300) further comprises a support assembly (304) for supporting the U-shaped buckle (301), the drive assembly (302) and the sealing assembly (303); the support assembly (304) comprises a T-shaped frame (304a) arranged on the charging seat (103), and two guide rails (304b) both arranged on the T-shaped frame (304a); the U-shaped buckle (301) is slidably connected to the guide rail (304b).

6. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 5, characterized in that: The driving assembly (302) comprises a driving motor (302a) arranged on the charging seat (103), a gear (302b) arranged on the output end of the driving motor (302a), two racks (302c) respectively arranged on the two U-shaped buckles (301) and meshingly connected with the gear (302b), and an elastic member (302d) arranged on the guide rail (304b) and having two ends respectively connected to the U-shaped buckle (301) and the T-shaped frame (304a).

7. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 6, characterized in that: The sealing assembly (303) comprises a sealing plate (303a) slidably arranged on the charging seat (103) and clamped with the limit assembly (305), a push plate (303b) arranged on the sealing plate (303a) and slidably connected to the guide rail (304b) and abutting against the U-shaped buckle (301), an elastic member (303c) arranged on the guide rail (304b) and connected to the T-shaped frame (304a) and the push plate (303b) at both ends thereof, and a guide bar (303d) arranged on the charging seat (103) and located on both sides of the liquid storage tank (103a); the sealing plate (303a) is slidably connected to the guide bar (303d).

8. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 7, characterized in that: The push plate (303b) is provided with a through slot for the elastic member 1 (302d) to pass through.

9. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 7 or 8, characterized in that: The limit assembly (305) rotates a rotating shaft (305a) arranged on the charging seat (103), a push rod (305b) arranged on the rotating shaft (305a) and slidably connected to the landing gear (202), a limit rod (305c) arranged on the rotating shaft (305a) and abutting against the sealing plate (303a), and a torsion spring (305d) arranged on the charging seat (103) for driving the rotating shaft (305a) to rotate.

10. The electric field type wireless charging device for unmanned aerial vehicles based on an oily dielectric layer according to claim 9, characterized in that: The charging seat (103) is provided with a liquid replenishing component (104), and the output end of the liquid replenishing component (104) is located in the two liquid storage tanks (103a).

Images