Flexible waste heat recovery device for oil-electric hybrid unmanned aerial vehicle

Abstract

The utility model discloses a flexible waste heat recovery device of an oil-electric hybrid unmanned aerial vehicle, and belongs to the technical field of waste heat recovery and utilization. The flexible waste heat recovery device comprises a bonding layer, an insulating layer, a thermoelectric conversion layer and a protective layer which are arranged in sequence, the adhesive layer is curled and adhered to an exhaust pipe of the unmanned aerial vehicle, the thermoelectric conversion layer is connected with a power supply control circuit, and the power supply control circuit is connected with a storage battery or a motor of the unmanned aerial vehicle. The flexible waste heat recovery device for the oil-electricity hybrid unmanned aerial vehicle is used for being curled and pasted on the exhaust pipe of the unmanned aerial vehicle, waste heat of the exhaust pipe is converted into electric energy through the thermoelectric conversion layer, the electric energy is stored in the unmanned aerial vehicle or supplied to a motor, and therefore the endurance mileage of the unmanned aerial vehicle is increased through waste heat recovery, and the energy efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery and utilization technology, specifically to a flexible waste heat recovery device for hybrid electric unmanned aerial vehicles. Background Technology

[0002] When hybrid drones operate in high-altitude or cold regions, the combustion efficiency of their fuel-powered systems (mainly small aircraft piston engines) decreases due to harsh conditions such as lack of oxygen and low temperatures. This significantly reduces the engine's output power and consequently shortens the drone's range. Furthermore, the waste heat from the exhaust gases of the fuel-powered engine is not effectively utilized, resulting in energy waste. Converting this waste heat into electricity would greatly improve the overall performance of the power system and extend the drone's range. Utility Model Content

[0003] The purpose of this invention is to provide a flexible waste heat recovery device for hybrid electric drones, in order to solve the problem that existing hybrid electric drones cannot effectively utilize waste heat to improve their range.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A flexible waste heat recovery device for a hybrid electric unmanned aerial vehicle (UAV) includes: an adhesive layer, an insulating layer, a thermoelectric conversion layer, and a protective layer arranged sequentially; the adhesive layer is used to be rolled up and pasted onto the exhaust pipe of the UAV, and the thermoelectric conversion layer is connected to a power supply control circuit, which is connected to the UAV's battery or motor.

[0006] Furthermore, the aforementioned thermoelectric conversion layer includes several P-type thermoelectric conductors, N-type thermoelectric conductors, a first electrode, a second electrode, and a third electrode; the first electrode is electrically connected to one end of the P-type thermoelectric conductor and one end of the N-type thermoelectric conductor, the second electrode is connected to the other end of the P-type thermoelectric conductor, the third electrode is connected to the other end of the N-type thermoelectric conductor, and the second and third electrodes are also electrically connected to the power supply control circuit.

[0007] Furthermore, the first electrode, the second electrode, and the third electrode are paired one-to-one or one-to-many with the corresponding P-type thermoelectric conductor or N-type thermoelectric conductor.

[0008] Furthermore, both the P-type and N-type thermoelectric conductors mentioned above use bismuth telluride thermal conductive materials.

[0009] Furthermore, the edge of the adhesive layer is connected to the edge of the protective layer.

[0010] Furthermore, the aforementioned adhesive layer is a graphene thermally conductive tape, the insulating layer is a polyimide film, and the protective layer is a polytetrafluoroethylene film.

[0011] This utility model has the following beneficial effects:

[0012] (1) The flexible waste heat recovery device of the hybrid electric drone of this utility model is used to be rolled and pasted on the exhaust pipe of the drone. The waste heat of the exhaust pipe is converted into electrical energy through the thermoelectric conversion layer to power the drone or the motor. Thus, the drone's range is improved by waste heat recovery and utilization, thereby significantly improving energy efficiency.

[0013] (2) The flexible waste heat recovery device of the hybrid electric drone of this utility model is a flexible design. Its bonding surface with the exhaust pipe is large, and it is not easy to fall off during use. Moreover, its weight is negligible compared to the weight of the drone, so the extra burden on the drone is small. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the flexible waste heat recovery device for hybrid electric unmanned aerial vehicles of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the insulating layer and the thermoelectric conversion layer of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the flexible waste heat recovery device for hybrid electric drones of this utility model when it is attached to the exhaust pipe of the drone.

[0017] In the diagram: 10-Adhesive layer; 20-Insulation layer; 30-Thermoelectric conversion layer; 31-P-type thermoelectric conductor; 32-N-type thermoelectric conductor; 33-First electrode; 34-Second electrode; 35-Third electrode; 40-Protective layer; 50-Exhaust pipe. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] Please refer to Figures 1 to 3 This embodiment provides a flexible waste heat recovery device for a hybrid electric drone. The device is curled and attached to the exhaust pipe 50 of the drone, i.e., it is wrapped around the exhaust pipe 50. It absorbs the waste heat from the exhaust gas transmitted by the exhaust pipe 50 and converts this waste heat into electrical energy to power the drone's battery or motor. This waste heat recovery improves the drone's range and significantly enhances energy efficiency. Furthermore, the flexible waste heat recovery device in this embodiment is a flexible design with a large bonding surface to the exhaust pipe 50, making it less likely to fall off during use. Moreover, its weight is negligible compared to the drone's weight, thus minimizing the additional burden on the drone.

[0020] The flexible waste heat recovery device for the hybrid electric unmanned aerial vehicle in this embodiment includes an adhesive layer 10, an insulating layer 20, a thermoelectric conversion layer 30, and a protective layer 40 arranged sequentially. One side of the adhesive layer 10 is used to adhere to the exhaust pipe 50, the other side of the adhesive layer 10 is adhered to one side of the insulating layer 20, and the edge of the other side of the insulating layer 20 is adhered to the edge of the protective layer 40, thereby confining the thermoelectric conversion layer 30 between the insulating layer 20 and the protective layer 40.

[0021] The thermoelectric conversion layer 30 includes a P-type thermoelectric conductor 31, an N-type thermoelectric conductor 32, a first electrode 33, a second electrode 34, and a third electrode 35. There are multiple P-type thermoelectric conductors 31 and N-type thermoelectric conductors 32, each corresponding to one other. One P-type thermoelectric conductor 31 and one N-type thermoelectric conductor 32 constitute one heat-conducting group. The number of first electrodes 33 is at least one, and each first electrode 33 corresponds to one or more heat-conducting groups. The first electrode 33 is electrically connected to one end of the P-type thermoelectric conductor 31 and the N-type thermoelectric conductor 32 in the corresponding heat-conducting group. The number of second electrodes 34 and third electrodes 35 is at least one, and they also correspond one-to-one. In the heat-conducting group corresponding to the first electrode 33, all P-type thermoelectric conductors 31 correspond to one or more second electrodes 34, and all N-type thermoelectric conductors 32 correspond to one or more corresponding third electrodes 35. Simultaneously, the other end of the P-type thermoelectric conductor 31 is electrically connected to the corresponding second electrode 34, and the other end of the N-type thermoelectric conductor 32 is electrically connected to the corresponding third electrode 35. Furthermore, the corresponding second electrodes 34 and third electrodes 35 are connected to the same heat-conducting group. All second electrodes 34 and third electrodes 35 are electrically connected to the power supply control circuit. In this embodiment, the power supply control circuit is the prior art, i.e., the power supply control circuit commonly used in thermoelectric conversion; the specific circuit structure will not be described in detail here.

[0022] Preferably, the number of the first electrode 33, the second electrode 34 and the third electrode 35 is 1. The first electrode 33 is electrically connected to one end of all P-type thermoelectric conductors 31 and one end of all N-type thermoelectric conductors 32. The second electrode 34 is electrically connected to the other end of all P-type thermoelectric conductors 31. The third electrode 35 is electrically connected to the other end of all N-type thermoelectric conductors 32.

[0023] In this embodiment, both the P-type thermoelectric conductor 31 and the N-type thermoelectric conductor 32 are made of bismuth telluride thermal conductive material, the adhesive layer 10 is graphene thermal conductive tape, the insulating layer 20 is a polyimide film, and the protective layer 40 is a polytetrafluoroethylene film.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible waste heat recovery device for hybrid electric unmanned aerial vehicles (UAVs), characterized in that, include: The adhesive layer (10), insulating layer (20), thermoelectric conversion layer (30) and protective layer (40) are arranged in sequence; the adhesive layer (10) is used to curl and stick to the exhaust pipe (50) of the drone; the thermoelectric conversion layer (30) is connected to a power supply control circuit, which is connected to the drone's battery or motor.

2. The flexible waste heat recovery device for hybrid electric unmanned aerial vehicles according to claim 1, characterized in that, The thermoelectric conversion layer (30) includes a plurality of P-type thermoelectric conductors (31), N-type thermoelectric conductors (32), a first electrode (33), a second electrode (34), and a third electrode (35); the first electrode (33) is electrically connected to one end of the P-type thermoelectric conductor (31) and one end of the N-type thermoelectric conductor (32), the second electrode (34) is connected to the other end of the P-type thermoelectric conductor (31), and the third electrode (35) is connected to the other end of the N-type thermoelectric conductor (32). The second electrode (34) and the third electrode (35) are also electrically connected to the power supply control circuit.

3. The flexible waste heat recovery device for hybrid electric unmanned aerial vehicles according to claim 2, characterized in that, The first electrode (33), the second electrode (34) and the third electrode (35) are paired one-to-one or one-to-many with the corresponding P-type thermoelectric conductor (31) or N-type thermoelectric conductor (32).

4. The flexible waste heat recovery device for hybrid electric unmanned aerial vehicles according to claim 2, characterized in that, Both the P-type thermoelectric conductor (31) and the N-type thermoelectric conductor (32) are made of bismuth telluride thermal conductive material.

5. The flexible waste heat recovery device for hybrid electric unmanned aerial vehicles according to claim 1, characterized in that, The edge of the adhesive layer (10) is connected to the edge of the protective layer (40).

6. The flexible waste heat recovery device for hybrid electric unmanned aerial vehicles according to claim 1, characterized in that, The adhesive layer (10) is a graphene thermally conductive tape, the insulating layer (20) is a polyimide film, and the protective layer (40) is a polytetrafluoroethylene film.

Images