A wireless charging system for robot dogs

Abstract

This invention provides a wireless charging system for a robot dog, relating to the field of wireless charging technology. The system includes a wireless charging base and a wireless charging transmitter, which is integrated inside the base. The transmitter wirelessly transmits power to a receiver integrated in the robot dog's abdomen. The upper end of the base has a contact slope configured to support the robot dog. Compared to related technologies, this wireless charging system avoids the wear and tear and safety hazards associated with traditional wired charging, significantly improving the robot dog's autonomous operation in complex environments. It also offers advantages such as enhanced charging safety, reduced human intervention, and extended device lifespan.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology, and more specifically, to a wireless charging system for a robot dog. Background Technology

[0002] Robot dogs, also known as quadruped robots, are intelligent devices that integrate bionics, artificial intelligence, and mechanical engineering. They achieve flexible movement through four mechanical legs, adapting to complex terrain and performing diverse tasks. Their core characteristics lie in their high mobility and intelligence. Using sensors (such as LiDAR and cameras), they can perceive their environment, autonomously plan paths, avoid obstacles, and even perform actions like climbing and jumping, all based on algorithms. In terms of applications, they are used in professional fields such as industrial inspection (e.g., nuclear power plants, oil fields) and disaster relief (penetrating dangerous areas to transmit data), and can also be extended to public services such as elderly care, scenic area guidance, and children's education.

[0003] However, with the development of robotics technology, traditional wired charging methods, which require manual intervention or precise docking, limit the continuous working capability of robot dogs. Furthermore, traditional wired charging methods also have the following drawbacks: plugging and unplugging in complex environments (such as rain, snow, and dust) poses safety hazards or causes interface wear; frequent manual battery replacement or plugging increases labor costs, especially in scenarios involving multiple robot dogs working together; repeated plugging and unplugging of the charging interface can easily lead to mechanical wear or corrosion; and traditional charging may cause short circuits or overheating risks due to poor contact. Utility Model Content

[0004] The purpose of this invention is to provide a wireless charging system for robot dogs, which has the advantages of improving charging safety, reducing human intervention, and extending the service life of the equipment.

[0005] This utility model provides a wireless charging system for a robot dog, comprising: a wireless charging base and a wireless charging transmitter, wherein the wireless charging transmitter is integrated inside the wireless charging base and is used to wirelessly transmit electrical energy to a wireless charging receiver integrated in the abdomen of the robot dog; the upper end of the wireless charging base has a contact slope, which is configured to support the robot dog.

[0006] The present invention provides a wireless charging system for a robot dog, which, compared with related technologies, has the following beneficial effects, but is not limited to: The wireless charging system for robot dogs described in this invention eliminates the need for plugging and unplugging the charging interface, preventing electrical sparks in humid or dusty environments. Through non-contact energy transfer between the wireless charging transmitter and receiver, it avoids the wear and tear and safety hazards associated with traditional wired charging, significantly improving the robot dog's autonomous operation capabilities in complex environments. It offers advantages such as enhanced charging safety, reduced human intervention, and extended device lifespan. Furthermore, it enables the robot dog to charge autonomously in hazardous environments, reducing the frequency of human intervention. The lack of physical contact during charging avoids interface corrosion problems, and the application of electromagnetic induction ensures stable energy transfer, adapting to an operating temperature range from -20℃ to 50℃. The non-contact interaction between the wireless charging transmitter and the robot dog provides a scalable charging infrastructure for collaborative operation of multiple robot dogs.

[0007] Optionally, the wireless charging transmitter includes a transmitter control box and a transmitter coil connected to each other. The transmitter control box is used to convert AC power from the power grid into DC power, and to convert DC power into AC power at the frequency required by the transmitter coil. The wireless charging receiver includes a receiver coil for receiving electromagnetic energy. The transmitter coil is used for electromagnetic coupling with the receiver coil.

[0008] Optionally, the transmitter control box includes a first rectifier circuit and an inverter circuit. The first rectifier circuit is used to convert AC power from the power grid into DC power, and the inverter circuit is used to convert the DC power from the first rectifier circuit into AC power of the required frequency for the transmitter coil.

[0009] Optionally, the wireless charging base includes a hollow housing structure, with the transmitter control box and the transmitter coil both arranged inside the housing structure. The upper end of the housing structure has an inclined top plate, and the outer end surface of the top plate is the contact slope.

[0010] Optionally, the transmitting coil is arranged parallel to the top plate and is positioned close to the top plate.

[0011] Optionally, the top plate has a window communicating with the interior of the housing structure, and the transmitting coil is disposed at the window.

[0012] Optionally, the plane containing the end face of the transmitting coil away from the interior of the housing structure is located on the same plane as the plane containing the contact slope.

[0013] Optionally, a limiting structure is provided on the contact slope, and a mating structure is provided on the robot dog. The limiting structure is used to abut against the mating structure to prevent the robot dog from sliding off the contact slope.

[0014] Optionally, the limiting structure is located at the lowest position of the contact slope.

[0015] Optionally, the limiting structure is a long strip-shaped plate structure, and the plate structure is provided with a plurality of notches spaced apart to prevent foreign objects from accumulating on the contact slope. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the wireless charging base and the robot dog in cooperation according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the wireless charging base according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the robot dog according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Wireless charging base; 11. Shell structure; 12. Top plate; 121. Window; 2. Wireless charging transmitter; 21. Transmitter control box; 22. Transmitting coil; 3. Robot dog; 4. Wireless charging receiver; 41. Receiver control box; 42. Receiver coil; 5. Limiting structure; 51. Notch. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] In the description of this utility model, the orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "top", "bottom", "front", "back", "inner" and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0022] Furthermore, in the attached diagram, the Z-axis represents the vertical direction, that is, the up and down position, with the positive direction of the Z-axis indicating up and the negative direction of the Z-axis indicating down.

[0023] It should also be noted that the aforementioned Z-axis designation is only for the purpose of facilitating and simplifying the description of the present invention, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0024] In related technologies, quadruped robots (robot dogs) use mechanical legs to move across complex terrain and rely on sensors and algorithms to perform diverse tasks. Traditional charging methods require manual plugging and unplugging of interfaces, posing safety hazards in rainy, snowy, or dusty environments. Frequent plugging and unplugging leads to interface wear, and poor contact may cause short circuits, limiting the robot's continuous operation capability. For example, during nuclear power plant inspections, robots need to repeatedly return to the charging point, and operators entering high-risk areas to replace batteries pose safety risks.

[0025] Therefore, such as Figures 1 to 3 As shown in the figure, this utility model embodiment proposes a wireless charging system for a robot dog, including: a wireless charging base 1 and a wireless charging transmitter 2. The wireless charging transmitter 2 is integrated inside the wireless charging base 1 and is used to wirelessly transmit electrical energy with a wireless charging receiver 4 integrated in the abdomen of the robot dog 3. The upper end of the wireless charging base 1 has a contact slope, which is configured to support the robot dog 3.

[0026] In this embodiment, in conjunction with the appendix Figure 1 To be continued Figure 3As shown, the wireless charging base 1 refers to the structure that supports the wireless charging transmitter 2 and provides support for the robot dog 3 to dock. Specifically, it can be implemented using an internally hollow shell structure. Its function is to protect the wireless charging transmitter 2 and guide the robot dog to dock. The wireless charging transmitter 2 is an energy output module that generates an alternating magnetic field, which can be implemented through a transmitting coil and a power regulation circuit. It needs to maintain a specific distance from the wireless charging receiver 4 to maintain transmission efficiency. The abdomen of the robot dog 3 refers to the middle area near the limb connection point on the bottom of the robot dog 3. This position can lower the center of gravity and improve the robot dog's posture stability during charging. The contact slope refers to the inclined plane at the top of the wireless charging base 1 that is close to the abdomen of the robot dog 3. When the robot dog 3 moves to the wireless charging base 1, it can bring its abdomen close to the contact plane at the top of the wireless charging base 1 by bending its legs. The contact slope also prevents the accumulation of dust, liquids, and other foreign objects. The robot dog 3 refers to the main frame that supports the mechanical motion module and control system, which can be made of aluminum alloy or carbon fiber composite materials. The wireless charging receiver 4 is a module that converts electromagnetic energy into electrical energy. It can be implemented through a receiving coil and a control circuit, and can be installed on the abdomen of the robot dog 3. It should be noted that the energy transmission channel between the wireless charging transmitter 2 and the wireless charging receiver 4 can be established either by placing the abdomen of the robot dog 3 close to (but not attached to) the inclined plane of the wireless charging base 1, or by attaching it to the inclined plane of the wireless charging base 1.

[0027] Specifically, when the robot dog 3 needs charging, it autonomously moves to the wireless charging base 1 and bends its legs to bring its abdomen close to the contact slope at the top of the wireless charging base 1. At this time, the wireless charging receiver 4, being close to the contact plane, forms a coupled magnetic field with the wireless charging transmitter 2, establishing an energy transmission channel, and the robot dog 3 is in a wireless charging state.

[0028] In this embodiment, the plugging and unplugging of the charging interface is eliminated, preventing the generation of electrical sparks in humid or dusty environments. The non-contact energy transfer between the wireless charging transmitter 2 and the wireless charging receiver 4 avoids the wear and tear and safety hazards associated with traditional wired charging, significantly improving the robot dog's autonomous working ability in complex environments. This offers advantages such as improved charging safety, reduced human intervention, and extended device lifespan.

[0029] In this embodiment, the robot dog achieves autonomous charging capability in hazardous environments, reducing the frequency of human intervention. The non-physical contact characteristic during charging avoids interface corrosion issues, and the application of electromagnetic induction ensures stable energy transmission, adapting to an operating temperature range from -20℃ to 50℃. The non-contact interaction mode between the wireless charging transmitter 2 and the robot dog 3 provides a scalable charging infrastructure for collaborative operation of multiple robot dogs.

[0030] Optionally, the wireless charging transmitter 2 includes a transmitter control box 21 and a transmitter coil 22 connected to each other. The transmitter control box 21 is used to convert AC power from the power grid into DC power and to convert DC power into AC power of the required frequency by the transmitter coil 22. The wireless charging receiver 4 includes a receiver coil 42 for receiving electromagnetic energy. The transmitter coil 22 is used for electromagnetic coupling with the receiver coil 42.

[0031] In this embodiment, in conjunction with the appendix Figure 1 and attached Figure 3 As shown, the transmitter control box 21 is a modular component for power conversion, which can be implemented using an integrated circuit board containing rectifier and inverter circuits. Its function is to convert the high-voltage AC power input from the power grid into low-voltage, high-frequency AC power suitable for wireless transmission. The transmitter coil 22 is an electromagnetic energy transmitting component formed by winding conductive material, which can be implemented using a planar spiral coil wound with copper wire. Its function is to generate an alternating magnetic field through alternating current to achieve energy transfer. The receiver coil 42 is an energy receiving component that is electromagnetically coupled to the transmitter coil 22. It can be implemented using a flat coil structure that matches the shape of the transmitter coil 22. Its function is to convert the alternating magnetic field energy into current output to the robot dog battery.

[0032] Specifically, when AC power from the grid is input to the transmitter control box 21, the AC power is first rectified into DC power, and then a high-frequency AC power is generated by the inverter circuit to drive the transmitter coil 22. The high-frequency alternating magnetic field generated by the transmitter coil 22 can form an electromagnetic coupling with the receiver coil 42 on the abdomen of the robot dog 3. In this process, the non-contact energy transfer between the transmitter coil 22 and the receiver coil 42 avoids the risk of wear and tear caused by physical contact. At the same time, the transmitter control box 21 can optimize the electromagnetic field strength by adjusting the current frequency to adapt to different charging distances.

[0033] Optionally, the transmitter control box 21 includes a first rectifier circuit and an inverter circuit. The first rectifier circuit is used to convert AC power from the power grid into DC power, and the inverter circuit is used to convert DC power from the first rectifier circuit into AC power of the required frequency for the transmitter coil 22.

[0034] In this embodiment, the first rectifier circuit refers to the circuit module that converts alternating current (AC) to direct current (DC). Specifically, it can be implemented using a bridge rectifier circuit with a filter capacitor. Its function is to convert the AC input from the power grid into stable DC, providing the power foundation for the subsequent inverter circuit. The inverter circuit refers to the circuit module that converts DC to AC at a specific frequency. Specifically, it can be implemented using a full-bridge inverter topology with high-frequency switching devices. Its function is to convert DC into the high-frequency AC required by the transmitting coil, thereby meeting the electromagnetic coupling requirements for wireless power transmission.

[0035] Specifically, the alternating current input from the power grid is converted into direct current by the first rectifier circuit. Then, the inverter circuit modulates the direct current into high-frequency alternating current according to the operating frequency requirements of the transmitting coil. Through two stages of power conversion, the power grid energy is adapted to the form of energy required by the transmitting coil, so that electromagnetic energy can be transmitted outward through the transmitting coil at a matched frequency, thereby forming an effective coupling with the receiving coil.

[0036] In other embodiments, in conjunction with the appendix Figure 3 As shown, the wireless charging receiver 4 may also include a receiver control box 41, wherein the receiver control box 41 may include a second rectifier circuit and a filter circuit, wherein the second rectifier circuit is used to convert the AC power provided by the receiving coil 42 into DC power, and after processing, to charge the robot dog battery, and the filter circuit is used to filter out noise signals in the DC power.

[0037] Optionally, the wireless charging base 1 includes a hollow shell structure 11, the transmitter control box 21 and the transmitter coil 22 are both arranged inside the shell structure 11, and the upper end of the shell structure 11 has an inclined top plate 12, the outer end surface of the top plate 12 being the contact slope.

[0038] In this embodiment, in conjunction with the appendix Figure 2 As shown, the housing structure 11 refers to the support structure used to fix and protect the transmitter control box 21 and the transmitter coil 22. Specifically, it can be implemented using a metal or plastic housing with an internal cavity. Its hollow internal design provides installation space for the transmitter control box 21 and the transmitter coil 22, while preventing external environmental corrosion of the electrical components. The inclined top plate 12 refers to the upper part of the housing structure 11 (attached). Figure 2 The inclined surface (in the positive Z-axis direction) has a specific angle, which can be achieved through integral molding or modular assembly. The contact inclined surface refers to the area where the outer end face of the top plate 12 directly contacts the abdomen of the robot dog 3. Specifically, the surface can be covered with a wear-resistant insulating material to form a stable energy transmission channel through physical contact. Of course, the outer end face of the top plate 12 and the robot dog 3 can also establish an energy transmission channel through a non-contact method, simply by being close to the outer end face of the top plate 12.

[0039] Specifically, the hollow design of the housing structure 11 integrates the transmitter control box 21 and the transmitter coil 22 within a closed space, preventing foreign objects such as dust and moisture from entering and causing short circuits or component damage. The tilt angle of the top plate 12 is designed according to the curvature of the robot dog's abdomen. When the robot dog moves to the charging base, it can naturally bring its abdomen close to the contact slope by bending its legs, so that the distance between the transmitter coil 22 and the receiver coil 42 reaches the optimal range for electromagnetic coupling.

[0040] Optionally, the transmitting coil 22 is arranged parallel to the top plate 12, and the transmitting coil 22 is disposed close to the top plate 12.

[0041] In this embodiment, in conjunction with the appendix Figure 1 As shown, the parallel arrangement of the transmitting coil 22 relative to the top plate 12 means that the plane of the transmitting coil 22 is parallel to the plane of the top plate 12. Specifically, this can be achieved by fixing the coil mounting bracket to the inner wall of the top plate 12. Geometric alignment ensures that the electromagnetic field direction matches the receiving end.

[0042] Specifically, the top plate 12 serves as the inclined support structure for the wireless charging base 1 to contact the robot dog 3. The parallel-arranged transmitting coils 22 inside the top plate 12 can form a stable electromagnetic coupling region with the receiving coil 42 on the underside of the robot dog 3. When the robot dog 3 is parked on the contact slope, the parallel relationship between the receiving coil 42 and the transmitting coil 22 avoids magnetic field strength attenuation due to angular deviation. Furthermore, the close proximity of the transmitting coil 22 to the top plate 12 further shortens the energy transmission distance, thereby improving energy transmission efficiency.

[0043] Optionally, the top plate 12 has a window 121 that communicates with the interior of the housing structure 11, and the transmitting coil 22 is disposed at the window 121.

[0044] In this embodiment, in conjunction with the appendix Figure 2 As shown, window 121 refers to a through-hole structure on the surface of the top plate 12, which can be implemented using a rectangular or circular through-hole. A sealing strip can be installed at the edge of the opening to prevent foreign objects from entering the housing. This structure allows the transmitting coil 22 to be directly exposed to the contact slope area, eliminating the shielding interference of the housing material on the electromagnetic field. The transmitting coil 22 being positioned at window 121 means that the coil assembly is embedded inside the opening or installed close to the outer edge of the opening. This can be achieved using a fixed bracket or a snap-fit ​​structure, ensuring that the coil plane remains parallel and aligned with the contact slope, thereby shortening the energy transmission path.

[0045] Specifically, after the top plate 12 has a window 121, the transmitting coil 22 can directly contact the contact slope through the window 121, avoiding absorption or reflection loss of electromagnetic waves by the shell material. When the robot dog 3's abdomen is in contact with the contact slope, the electromagnetic coupling efficiency between the receiving coil 42 and the transmitting coil 22 is significantly improved. The edge of the window 121 can be sealed with waterproof strips to prevent rainwater or dust from entering the shell through the opening.

[0046] Optionally, the plane of the end face of the transmitting coil 22 facing away from the interior of the housing structure 11 is located on the same plane as the plane of the contact inclined surface.

[0047] In this embodiment, the plane on which the end face of the transmitting coil 22 faces away from the inside of the housing structure 11 refers to the plane on which the outer surface of the transmitting coil 22 faces the outside of the housing structure 11. By keeping the outer surface of the coil coplanar with the contact slope, the air gap in the electromagnetic energy transmission path is reduced.

[0048] Specifically, the outer surface of the transmitting coil 22 is coplanar with the contact slope, allowing the receiving coil 42 to directly contact the outer surface of the transmitting coil 22 when the robot dog 3 is docked on the wireless charging base 1. This structure eliminates the electromagnetic field attenuation caused by the height difference between the coil and the contact surface in traditional wireless charging devices, enabling the alternating magnetic field generated by the transmitting coil 22 to penetrate the contact slope and act on the receiving coil 42 via the shortest path. During energy transmission, the parallel alignment between the transmitting coil 22 and the receiving coil 42 is automatically achieved through the physical contact between the contact slope and the belly of the robot dog 3, establishing a stable electromagnetic coupling channel without the need for manual adjustment.

[0049] Optionally, a limiting structure 5 is provided on the contact slope, and a mating structure is provided on the robot dog 3. The limiting structure 5 is used to abut against the mating structure to prevent the robot dog 3 from sliding off the contact slope.

[0050] In this embodiment, in conjunction with the appendix Figure 2 As shown, the limiting structure 5 refers to a physical blocking component set on the contact slope of the wireless charging base 1. Specifically, it can be implemented using a protruding structure. Its function is to form mechanical interference with the mating structure on the robot dog 3, preventing the robot dog from shifting due to gravity or external interference during charging. The mating structure refers to a complementary component set on the abdomen of the robot dog at a position corresponding to the contact slope. Specifically, it can be implemented using a groove, a snap-fit, or a magnetic adsorption structure. Its function is to form physical contact with the limiting structure, restricting the robot dog's sliding tendency on the slope by mutually abutting against it. (See attached diagram.) Figure 1 and attached Figure 3As shown, the supporting structure can also be a receiver control box 41 integrated in the abdomen of the robot dog, which abuts against the limiting structure 5 to restrict the robot dog's sliding tendency on the inclined plane.

[0051] Specifically, when the robot dog 3 moves to the contact slope of the wireless charging base 1, the mating structure on its abdomen comes into contact with the limiting structure 5 on the wireless charging base 1, forming a mechanical block. For example, the limiting structure can be a horizontally extending strip-shaped protrusion, and the mating structure is the receiver control box 41 corresponding to the abdomen of the robot dog. After the two come into contact, they restrict the sliding of the robot dog.

[0052] Optionally, the limiting structure 5 is located at the lowest position of the contact slope.

[0053] In this embodiment, in conjunction with the appendix Figure 2 As shown, the lowest point of the contact slope refers to the area with the lowest height and closest to the horizontal support surface in the inclined plane. Specifically, it can be achieved by welding or bolting the limiting structure to the bottom edge of the slope. This position is at the end of the robot dog's sliding trajectory along the slope.

[0054] Specifically, when the robot dog 3 moves to the wireless charging base 1, its abdomen comes into contact with the inclined surface, and gravity causes the robot dog to slide down the inclined surface. The limiting structure 5 is fixed at the lowest position of the inclined surface, forming a horizontal barrier. When the robot dog 3 slides down to the bottom of the inclined surface, its bottom mating structure will contact the limiting structure 5 and form a resisting force, thereby preventing the robot dog 3 from continuing to slide down and leaving the charging position.

[0055] Optionally, the limiting structure 5 is a long strip-shaped plate structure, and the plate structure is provided with a plurality of notches 51 at intervals to prevent foreign objects from accumulating on the contact slope.

[0056] In this embodiment, in conjunction with the appendix Figure 2 As shown, notch 51 refers to an opening penetrating the plate-like structure. This can be implemented using a rectangular or semi-circular hole, allowing foreign matter such as dust and liquid to slide naturally off the contact slope, preventing accumulation in the contact area between the limiting structure 5 and the robot dog 3. For example, when the robot dog 3 detaches from the wireless charging base 1 after charging in a dusty environment, particles attached to the contact slope can fall off through notch 51 due to gravity, preventing long-term accumulation that could lead to coil misalignment or decreased energy transmission efficiency.

[0057] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0058] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A wireless charging system for a robot dog, characterized in that, include: A wireless charging base (1) and a wireless charging transmitter (2) are provided. The wireless charging transmitter (2) is integrated inside the wireless charging base (1). The wireless charging transmitter (2) is used to wirelessly transmit electrical energy with a wireless charging receiver (4) integrated in the abdomen of the robot dog (3). The upper end of the wireless charging base (1) has a contact slope, which is configured to support the robot dog (3).

2. The wireless charging system for a robot dog according to claim 1, characterized in that, The wireless charging transmitter (2) includes a transmitter control box (21) and a transmitter coil (22) connected to each other. The transmitter control box (21) is used to convert AC power from the power grid into DC power and to convert DC power into AC power at the frequency required by the transmitter coil (22). The wireless charging receiver (4) includes a receiver coil (42) for receiving electromagnetic energy. The transmitter coil (22) is used for electromagnetic coupling with the receiver coil (42).

3. The wireless charging system for a robot dog according to claim 2, characterized in that, The transmitter control box (21) includes a first rectifier circuit and an inverter circuit. The first rectifier circuit is used to convert AC power from the power grid into DC power, and the inverter circuit is used to convert DC power from the first rectifier circuit into AC power of the required frequency for the transmitter coil (22).

4. The wireless charging system for a robot dog according to claim 2, characterized in that, The wireless charging base (1) includes a hollow shell structure (11), the transmitter control box (21) and the transmitter coil (22) are both arranged inside the shell structure (11), and the upper end of the shell structure (11) has an inclined top plate (12), the outer end surface of the top plate (12) is the contact slope.

5. The wireless charging system for a robot dog according to claim 4, characterized in that, The transmitting coil (22) is arranged parallel to the top plate (12) and is positioned close to the top plate (12).

6. The wireless charging system for a robot dog according to claim 5, characterized in that, The top plate (12) has a window (121) that communicates with the interior of the shell structure (11), and the transmitting coil (22) is located at the window (121).

7. The wireless charging system for a robot dog according to claim 6, characterized in that, The plane on which the end face of the transmitting coil (22) away from the interior of the housing structure (11) is located is on the same plane as the plane on which the contact slope is located.

8. The wireless charging system for a robot dog according to claim 1, characterized in that, A limiting structure (5) is provided on the contact slope, and a matching structure is provided on the robot dog (3). The limiting structure (5) is used to abut against the matching structure to restrict the robot dog (3) from sliding off the contact slope.

9. The wireless charging system for a robot dog according to claim 8, characterized in that, The limiting structure (5) is located at the lowest position of the contact slope.

10. The wireless charging system for a robot dog according to claim 9, characterized in that, The limiting structure (5) is a long strip plate-like structure, and the plate-like structure is provided with a plurality of notches (51) spaced apart to prevent foreign objects from accumulating on the contact slope.

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