A liquid-cooled charging device for a drone

Abstract

The utility model discloses a kind of unmanned aerial vehicle liquid cooling charging devices, it is related to unmanned aerial vehicle charging technical field, including unmanned aerial vehicle battery charging box and charging gun, unmanned aerial vehicle battery charging box is built-in cooling circulation pipeline, charging gun is built-in water inlet pipe and backwater pipe, water inlet pipe is communicated with cooling circulation pipeline liquid inlet end, backwater pipe is communicated with liquid outlet end, so that cooling liquid flows through both cooling. Charging box side input connector is equipped with charging box input plug, water inlet and backwater connector;Charging gun contains shell, outer sheath, inside has retainer, limit hole, water outlet and backwater plug, end cap is connected to corresponding connector, and charging cable, terminal and output connector are also provided. When charging, each connector is connected, realize electric energy transmission and cooling liquid circulation, synchronously cool charging box and charging gun, improve charging stability and security, applicable to unmanned aerial vehicle battery charging scene.

Description

Technical Field

[0001] This utility model relates to the field of drone charging technology, and in particular to a liquid-cooled charging device for drones. Background Technology

[0002] During drone battery charging, the charging case provides power to the battery, while the charging gun, as a connecting component, transmits current; both generate heat due to this power transfer. However, existing charging device cooling designs often only address the drone battery or the charging case, neglecting the heat dissipation needs of the charging gun. While most solutions incorporate built-in cooling circulation pipes in the charging case to cool the battery and some structural components, the charging gun lacks suitable liquid cooling or efficient heat dissipation designs. During charging, the gun body continuously heats up due to the current flow, affecting not only its own lifespan and stability but also indirectly impacting the cooling circulation efficiency within the charging case due to heat accumulation, leading to an imbalance in the overall thermal management of the charging system.

[0003] Especially in high-current fast charging scenarios, the problem of heat concentration between the charging gun and the charging box is more prominent. If they cannot be cooled simultaneously, it can easily trigger the device's overheat protection, reduce the charging speed, and may even damage the battery and charging components due to high temperatures, posing a safety hazard. Therefore, existing drone battery charging devices, because they do not achieve coordinated cooling of the charging box and the charging gun, cannot meet the requirements for efficient and safe charging. There is an urgent need for a liquid-cooled charging technology solution that can cool both of them simultaneously. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a liquid-cooled charging device for unmanned aerial vehicles (UAVs).

[0005] This utility model proposes a liquid-cooled charging device for drones, including a drone battery charging box and a charging gun. The drone battery charging box has a built-in cooling circulation pipeline, and the charging gun has a built-in water inlet pipe and a water return pipe. The water inlet pipe is connected to the liquid inlet end of the cooling circulation pipeline, and the water return pipe is connected to the liquid outlet end of the cooling circulation pipeline, so that the coolant flows through the charging gun and the drone battery charging box to cool them down.

[0006] 2. The UAV liquid-cooled charging device according to claim 1, characterized in that an input connector is installed on the side of the UAV battery charging box, and the input connector is respectively provided with a charging box input plug, a charging box water inlet connector and a charging box water return connector, the liquid outlet end of the charging box water inlet connector is connected to the inlet of the cooling circulation pipeline, and the liquid inlet end of the charging box water return connector is connected to the outlet of the cooling circulation pipeline.

[0007] Furthermore, the charging gun includes a housing and an outer sheath, with the water inlet pipe and water return pipe located inside the housing and outer sheath.

[0008] Furthermore, a retainer is connected inside the outer shell, and several limiting holes are provided inside the retainer. The two limiting holes at the bottom are respectively fixed with a water outlet plug and a water return plug inside, and the water outlet plug and the water return plug are respectively connected to the water inlet pipe and the water return pipe.

[0009] Furthermore, the end of the outer shell is connected to an end cap, and the bottom of the end cap is connected to the charging gun water outlet connector and the charging gun water return connector respectively. The water outlet connector and the water return connector extend into the interior of the charging gun water outlet connector and the charging gun water return connector respectively, and a sealing ring is provided between them.

[0010] Furthermore, the beginning of the water inlet pipe is connected to the main water inlet connector, and the end of the water return pipe is connected to the main water return connector.

[0011] Furthermore, the outer casing and outer sheath are also provided with several charging cables inside, the ends of which are connected to charging terminals. The charging terminals are fixed inside several limiting holes on the top. The top of the end cover is connected to several charging gun output connectors, and the ends of the charging terminals extend into the interior of the charging gun output connectors.

[0012] Furthermore, when the charging gun is connected to the input connector of the drone battery charging box for charging, the water outlet connector of the charging gun is connected to the water inlet connector of the charging box, the water return connector of the charging gun is connected to the water return connector of the charging box, and the output connector of the charging gun is connected to the input plug of the charging box. In addition, sealing gaskets are provided between the water outlet connector of the charging gun and the water inlet connector of the charging box, and between the water return connector of the charging gun and the water return connector of the charging box.

[0013] The beneficial effects of this utility model are as follows: by allowing the coolant to flow through both the charging gun and the drone battery charging box simultaneously, both can be cooled down, effectively solving the problem of thermal management imbalance in the charging device in the prior art, avoiding the impact of overheating of a single component on the overall charging performance, improving the stability and safety of the drone battery charging process, and ensuring the service life of the charging device and the drone battery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the drone battery charging box in this utility model; Figure 3 This is a schematic diagram of the assembly structure of the charging gun in this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the charging gun in this utility model.

[0015] In the diagram: 1. Drone battery charging box; 11. Charging box input plug; 12. Charging box water inlet connector; 13. Charging box water return connector; 2. Charging gun; 21. Outer shell; 22. Outer sheath; 23. Water inlet pipe; 24. Water return pipe; 25. Water outlet plug; 26. Water return plug; 27. End cap; 28. Charging gun water outlet connector; 29. ​​Charging gun water return connector; 210. Main water inlet connector; 211. Main water return connector; 212. Charging cable; 213. Charging terminal; 214. Holder; 215. Limiting hole; 216. Charging gun output connector. Detailed Implementation

[0016] Reference Figure 1-4 The present invention proposes a liquid-cooled charging device for unmanned aerial vehicles (UAVs), which mainly consists of a UAV battery charging box 1 and a charging gun 2. The two are connected to the liquid circuit and the electrical circuit through a specific interface to achieve charging and cooling functions, as detailed below: An input connector is installed on the side of the drone battery charging box 1. The input connector integrates a charging box input plug 11, a charging box water inlet connector 12, and a charging box water return connector 13. The charging box has a built-in cooling circulation pipeline. The outlet of the charging box water inlet connector 12 is connected to the inlet of the cooling circulation pipeline, and the inlet of the charging box water return connector 13 is connected to the outlet of the cooling circulation pipeline for coolant circulation. It should be noted that the specific structure of the drone battery charging box 1 is existing known technology and will not be described in detail here. The charging gun 2 includes a housing 21 and an outer sheath 22. Internally, it contains components such as a water inlet pipe 23, a water return pipe 24, and a charging cable 212. The beginning of the water inlet pipe 23 is connected to a main water inlet connector 210, and the end of the water return pipe 24 is connected to a main water return connector 211. Inside the housing 21, there is a retainer 214 with several limiting holes 215. Two limiting holes at the bottom are used to fix the water outlet plug 25 and the water return plug 26, which are respectively connected to the water inlet pipe 23 and the water return pipe 24. An end cap 27 is connected to the end of the housing 21. The bottom of the end cap is connected to the charging gun water outlet connector 28 and the charging gun water return connector 29. The water outlet plug 25 and the water return plug 26 extend into their respective connectors and are equipped with sealing rings to ensure a tight seal. The charging cable 212 inside the outer casing 21 and outer sheath 22 is connected to a charging terminal 213, which is fixed in the top limiting hole 215. The top of the end cover 27 is connected to a charging gun output connector 216, and the end of the charging terminal extends into the connector for power transmission.

[0017] During use: When charging, the charging gun 2 is engaged with the input connector of the drone battery charging box 1. At this time, the charging gun outlet connector 28 is precisely aligned with the charging box inlet connector 12, the charging gun return connector 29 is aligned with the charging box return connector 13, and the charging gun output connector 216 is aligned with the charging box input plug 11. Meanwhile, the sealing gaskets between the charging gun outlet connector 28 and the charging box inlet connector 12, and between the charging gun return connector 29 and the charging box return connector 13, can prevent coolant leakage and ensure the sealing of the liquid circuit. During charging, coolant enters the inlet pipe 23 from the main inlet connector 210, passes through the outlet plug 25 and the charging gun outlet connector 28 to cool the charging gun 2, and then flows into the charging box inlet connector 12 and the cooling circulation pipe of the drone battery charging box 1. In the cooling circulation pipe, the coolant absorbs the heat generated during the charging process, and then enters the return pipe 24 through the charging box return connector 13, the charging gun return connector 29 and the return plug 26, and then flows out from the main return connector 211, completing the cooling cycle for the charging gun 2 and the drone battery charging box 1. Meanwhile, electrical energy is transmitted through the charging cable 212, charging terminal 213, and charging gun output connector 216 inside the charging gun 2 to the charging box input plug 11 of the drone battery charging box 1 to charge the drone battery. The internal circuit structure of the input plug 11 and the drone battery charging box 1 is existing known technology and will not be described in detail here. In this way, during the charging process, the temperature of the charging gun 2 and the drone battery charging box 1 can be effectively controlled by the circulation of coolant, ensuring that the charging device works stably and efficiently, and avoiding overheating that affects charging performance or damages the equipment.

[0018] It should also be noted that the coolant used in this patent is an insulating and non-conductive liquid, which is already a product of existing technology. In addition, the battery inside the water tank is also waterproofed, so the liquid can be immersed on the surface of the battery pack, and the heat generated by the battery is absorbed and carried away by the liquid.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid-cooled charging device for unmanned aerial vehicles (UAVs), comprising a UAV battery charging box (1) and a charging gun (2), wherein the UAV battery charging box (1) has a built-in cooling circulation pipeline, characterized in that, The charging gun (2) has a built-in water inlet pipe (23) and a water return pipe (24). The water inlet pipe (23) is connected to the liquid inlet end of the cooling circulation pipe, and the water return pipe (24) is connected to the liquid outlet end of the cooling circulation pipe, so that the coolant flows through the charging gun (2) and the drone battery charging box (1) to cool them down.

2. The UAV liquid-cooled charging device according to claim 1, characterized in that, The side of the drone battery charging box (1) is equipped with an input connector, which is provided with a charging box input plug (11), a charging box water inlet connector (12) and a charging box water return connector (13). The outlet end of the charging box water inlet connector (12) is connected to the inlet of the cooling circulation pipeline, and the inlet end of the charging box water return connector (13) is connected to the outlet of the cooling circulation pipeline.

3. The liquid-cooled charging device for unmanned aerial vehicles according to claim 1, characterized in that, The charging gun (2) includes an outer shell (21) and an outer sheath (22), and the water inlet pipe (23) and the water return pipe (24) are located inside the outer shell (21) and the outer sheath (22).

4. The UAV liquid-cooled charging device according to claim 3, characterized in that, The housing (21) is connected to a retainer (214). The retainer (214) has several limiting holes (215) inside. The two limiting holes (215) at the bottom are respectively fixed to the water outlet plug (25) and the water return plug (26). The water outlet plug (25) and the water return plug (26) are respectively connected to the water inlet pipe (23) and the water return pipe (24).

5. The UAV liquid-cooled charging device according to claim 4, characterized in that, The end of the outer shell (21) is connected to the end cap (27). The bottom of the end cap (27) is connected to the charging gun water outlet connector (28) and the charging gun water return connector (29). The water outlet plug (25) and the water return plug (26) extend into the interior of the charging gun water outlet connector (28) and the charging gun water return connector (29), and a sealing ring is provided between them.

6. The liquid-cooled charging device for unmanned aerial vehicles according to claim 1, characterized in that, The beginning of the inlet pipe (23) is connected to the main inlet connector (210), and the end of the return pipe (24) is connected to the main return connector (211).

7. The liquid-cooled charging device for unmanned aerial vehicles according to claim 5, characterized in that, The outer casing (21) and outer sheath (22) are also equipped with several charging cables (212). The ends of the charging cables (212) are connected to charging terminals (213). The charging terminals (213) are fixed inside several limiting holes (215) on the top. The top of the end cap (27) is connected to several charging gun output connectors (216). The ends of the charging terminals (213) extend into the interior of the charging gun output connectors (216).

8. The liquid-cooled charging device for unmanned aerial vehicles according to any one of claims 1-7, characterized in that, When the charging gun (2) is connected to the input connector of the UAV battery charging box (1) for charging, the charging gun outlet connector (28) is connected to the charging box inlet connector (12), the charging gun return connector (29) is connected to the charging box return connector (13), the charging gun output connector (216) is connected to the charging box input plug (11), and sealing gaskets are provided between the charging gun outlet connector (28) and the charging box inlet connector (12), and between the charging gun return connector (29) and the charging box return connector (13).

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