Aircraft external battery pod heat sink

Abstract

The utility model discloses an aircraft external hanging battery cabin heat abstractor, the heat abstractor includes: the air inlet of setting in battery cabin one end, the air outlet of setting in battery cabin other end, the drive fan of setting in the inside of battery cabin, the air inlet position of battery cabin is provided with the first cover plate of turning in, the air outlet position of battery cabin is provided with the second cover plate of turning out, the drive fan is used for driving the airflow of battery cabin from the one end of the air inlet to the one end of the air outlet flows, and the first cover plate and the second cover plate are based on the opening state of air pressure difference. Through setting the openable and closable air inlet and air outlet, cooperate the drive fan of inside setting, integrate the heat abstractor in the battery cabin body structure, realize simple structure, and have the external hanging battery cabin heat abstractor structure design of efficient heat dissipation performance.

Description

Technical Field

[0001] This utility model relates to the field of aircraft equipment technology, specifically to a heat dissipation device for an aircraft external battery compartment. Background Technology

[0002] The power battery system of a drone is one of the most important components of a drone system. Since the power battery generates a lot of heat when discharging during the takeoff and landing of the drone, it is necessary to effectively dissipate heat from the power battery to maintain its operational reliability. Existing air-cooling systems mainly rely on airflow design, which improves the heat transport path by setting up complex airflow channels and setting up heat dissipation fins in the airflow channels to improve heat exchange efficiency. However, the complex airflow path increases air resistance, which increases the flight drag of the aircraft. Moreover, the airflow channels encroach on the battery compartment space, affecting the reliability of the internal structural layout of the power battery compartment. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a heat dissipation device for an aircraft external battery compartment. By setting an operable air inlet and outlet, and cooperating with an internally installed drive fan, the heat dissipation device is integrated into the battery compartment body structure, realizing a simple structure and a heat dissipation structure design for an external battery compartment with high efficiency.

[0004] This utility model provides a heat dissipation device for an aircraft external battery compartment. The heat dissipation device includes: an air inlet at one end of the battery compartment, an air outlet at the other end of the battery compartment, and a drive fan inside the battery compartment. The air inlet of the battery compartment is provided with a first cover that flips inward, and the air outlet of the battery compartment is provided with a second cover that flips outward. The drive fan is used to drive the airflow in the battery compartment from the end where the air inlet is located to the end where the air outlet is located, and the first cover and the second cover are in the open state based on the air pressure difference.

[0005] Furthermore, the battery compartment is equipped with several battery modules and several cooling fans. One of the cooling fans is located at the front end of one of the battery modules, and the airflow direction of the cooling fan is towards the air outlet.

[0006] Furthermore, the battery module is provided with heat dissipation fins, and the airflow from the cooling fan passes through the heat dissipation fins.

[0007] Furthermore, the first cover plate is hinged to the air inlet based on the first hinge, and the first cover plate adheres to the air inlet based on its own weight and maintains the air inlet in a closed state.

[0008] Furthermore, a limiting block is provided inside the battery compartment, and the limiting block is located on one side of the first hinge installation position of the air inlet.

[0009] Furthermore, the second cover plate is hinged to the air outlet based on the second hinge, and the second cover plate forms an outward-folding movable structure based on the second hinge.

[0010] Furthermore, a tension spring assembly is provided inside the battery compartment, with one end of the tension spring assembly fixed inside the battery compartment and the other end of the tension spring assembly fixed to the second cover plate; The second cover plate is attached to the air outlet based on the tension spring assembly to maintain the air outlet in a closed state.

[0011] Furthermore, an air filter is installed inside the battery compartment. The air filter is located at one end of the battery compartment where the air inlet is located, and the airflow from the air inlet is input into the battery compartment through the air filter.

[0012] Furthermore, the air filter is press-fitted into the battery compartment based on a clamping block.

[0013] Furthermore, a dynamic pressure air inlet is provided at one end of the battery compartment.

[0014] This utility model provides a heat dissipation device for an aircraft external battery compartment. By setting up an operable air inlet and outlet, and cooperating with an internally installed drive fan, the heat dissipation device can be integrated into the battery compartment body structure through the cooperation between the air inlet and outlet. This achieves a simple structure and a highly efficient heat dissipation performance in the design of an external battery compartment heat dissipation structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the aircraft external battery compartment heat dissipation device in this utility model embodiment; Figure 2 This is a schematic diagram of the heat dissipation status of the aircraft external battery compartment heat dissipation device in this embodiment of the utility model; Figure 3 This is an example of the embodiments of this utility model. Figure 2 An enlarged schematic diagram of the structure at point A. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Figure 1 This diagram illustrates the structure of the aircraft external battery compartment heat dissipation device according to an embodiment of the present invention. Figure 2 This diagram illustrates the heat dissipation status of the aircraft external battery compartment heat dissipation device in an embodiment of the present invention. Figure 3 The appendix of the present utility model embodiment is shown. Figure 2 The diagram shows an enlarged view of the structure at point A. The heat dissipation device includes: an air inlet 11 at one end of the battery compartment 1, an air outlet 12 at the other end of the battery compartment 1, and a drive fan 7 inside the battery compartment 1; a first cover 2 that flips inward is provided at the air inlet 11 of the battery compartment 1, and a second cover 12 that flips outward is provided at the air outlet 12 of the battery compartment 1; the drive fan 7 is used to drive the airflow of the battery compartment 1 from the end where the air inlet 11 is located to the end where the air outlet 12 is located, and the first cover 2 and the second cover 12 are in an open state based on the air pressure difference.

[0019] The air inlet 11 refers to the structure located at one end of the battery compartment 1 for introducing external air. Specifically, it can be implemented using an opening design with a deflector. Its function is to guide external airflow into the compartment to form a directional flow path. The air outlet 12 refers to the structure located at the other end of the battery compartment 1 for discharging internal air. The cooperation between the air inlet 11 and the air outlet 12 can promote the discharge of hot air from the battery compartment 1 and maintain airflow circulation.

[0020] Furthermore, the drive fan 7 is used to provide the driving force for the airflow inside the battery compartment 1, and the pressure difference is generated by using an axial fan to drive the airflow from the air inlet 11 to the air outlet 12.

[0021] Specifically, the first cover plate 2 is hinged to an inwardly opening covering structure, which automatically opens the air inlet 11 based on the air pressure difference and prevents the intrusion of external foreign objects. The second cover plate 12 is hinged to an outwardly opening covering structure, allowing the first cover plate 2 and the second cover plate 12 to fold in the same direction based on airflow, thereby creating a good airflow effect.

[0022] Specifically, the battery compartment 1 is equipped with several battery modules 5 and several cooling fans 6; one of the cooling fans 6 is located at the front end of one of the battery modules 5, and the air outlet of the cooling fan 6 is directed towards the air outlet 12.

[0023] Furthermore, the cooling fan 6 is installed at the front end of the battery module 5, with its airflow direction aligned with that of the air outlet 12. A one-to-one correspondence is established between the cooling fan 6 and the battery module 5, allowing each cooling fan 6 to act independently on its corresponding battery module 5. The airflow generated by the cooling fan 6 flows along the surface of the battery module 5 and converges towards the air outlet 12. This creates a superposition effect between the overall airflow generated by the driving fan 7 and the localized airflow generated by the cooling fan 6, thereby improving the heat dissipation from the battery compartment 1.

[0024] Furthermore, the battery module 5 is equipped with heat dissipation fins. The airflow from the cooling fan 6 passes through these fins, which are located inside the battery module 5 and in contact with the battery surface. The heat dissipation fins are made of metal and have multiple parallel-arranged thin fin structures. The airflow direction of the cooling fan 6 is adjusted to directly align with the gaps between the heat dissipation fins, and the airflow flows along the surface of the fins. When the cooling fan 6 is activated, the airflow is guided through the gaps between the heat dissipation fins. By increasing the contact area with the airflow, the heat dissipation fins allow the heat generated by the battery module 5 to be quickly conducted to the fin surface through the metal material. The airflow carries away surface heat as it passes over the heat dissipation fins.

[0025] Specifically, the first cover plate 2 is hinged to the air inlet 11 based on the first hinge, and the first cover plate 2 adheres to the air inlet 11 by its own weight and maintains the air inlet 11 in a closed state. The hinge axis of the first hinge is arranged horizontally, so that the first cover plate 2 can rotate upward around the axis to open; the center of gravity of the first cover plate 2 is located below the hinge axis, and when no external force is applied, gravity causes the cover plate to hang down naturally and adhere to the edge of the air inlet 11; the inner wall of the air inlet 11 is provided with a sealing surface that matches the edge of the cover plate, and the cover plate is pressed tightly by its own weight when closed.

[0026] Specifically, when the drive fan 7 is not running, the first cover 2 remains closed under gravity, with the sealing surface in close contact with the edge of the cover to prevent external airflow or foreign objects from entering the battery compartment 1. When the drive fan 7 starts and generates negative pressure, the external air pressure overcomes the weight of the cover and pushes it to rotate upward around the hinge to open. The limiting block 14 prevents the cover from rotating further inward, maintaining the effective ventilation area of ​​the air inlet 11. When the fan stops working, the cover automatically falls back to the closed position under gravity, and the limiting block 14 ensures that the cover is accurately aligned with the sealing surface when it returns to its original position. This structure achieves automatic locking through mechanical gravity, requiring no additional power device. At the same time, the cooperation between the limiting block 14 and the sealing surface ensures the stability of the closed state.

[0027] Specifically, a limiting block 14 is provided inside the battery compartment 1, and the limiting block 14 is located on one side of the first hinge mounting position of the air inlet 11. The limiting block 14, located on one side of the hinge mounting position, is used to limit the inward rotation angle of the cover plate, preventing excessive overturning. The limiting block 14 can adopt a composite structure of a metal base and a rubber buffer layer. When the drive fan 7 starts and forms a positive airflow, the air inlet 11 cover plate rotates and opens around the hinge axis under the action of air pressure difference. The limiting block 14 effectively controls the opening angle of the first cover plate 2. This avoids the problem of the first cover plate 2 being damaged by excessive opening under the action of air pressure difference. Furthermore, the setting of the limiting block 14 enhances the stability and durability of the air inlet 11 structure of the battery compartment 1, extending the service life of the heat dissipation device. At the same time, the presence of the limiting block 14 does not affect the normal heat dissipation function of the battery compartment 1, ensuring heat dissipation efficiency.

[0028] Specifically, the second cover plate 12 is hinged to the air outlet 12 based on the second hinge, and the second cover plate 12 forms an outward-folding movable structure based on the second hinge; a tension spring assembly is provided inside the battery compartment 1, one end of the tension spring assembly is fixed inside the battery compartment 1, and the other end of the tension spring assembly is fixed to the second cover plate 12; the second cover plate 12 is fitted inside the air outlet 12 based on the tension spring assembly to maintain the closed state of the air outlet 12. The second hinge is hinged to the edge of the air outlet 12, and the outward-folding movable structure allows the second cover plate 12 to be flipped open to the outside; the tension spring assembly includes a spring body and two end fixing structures, the spring body is in a stretched state in its natural state, and the second cover plate 12 is pulled to the closed position by the preload.

[0029] Furthermore, when the drive fan 7 starts, the airflow pressure inside the battery compartment 1 gradually increases. When the pressure exceeds the preload of the tension spring assembly, the second cover 12 flips outward to open, forming an air outlet channel. When the drive fan 7 stops running or the air pressure decreases, the tension spring assembly pulls the second cover 12 back to the closed position through a contraction action, preventing foreign objects from entering. When the drive fan 7 stops running, the elastic restoring force of the tension spring assembly pulls the second cover 12 back to its original position around the rotation axis of the second hinge, so that the inner surface of the second cover 12 is completely pressed against the sealing strip at the edge of the air outlet 12, forming an airtight closed state. When the drive fan 7 starts, the airflow pressure formed inside the battery compartment 1 acts on the inner surface of the second cover 12. When the pressure exceeds the spring preload, the second cover 12 flips outward to open. At this time, the spring is stretched and stores elastic potential energy.

[0030] Furthermore, the opening and closing action of the cover of the heat dissipation device provided in this embodiment of the present invention relies entirely on the dynamic balance between airflow pressure and spring force, without the need for additional drive motors or sensors, thus improving the simplicity of the structural design of the heat dissipation device in the battery compartment 1.

[0031] Specifically, an air filter 8 is installed inside the battery compartment 1. The air filter 8 is located at one end of the battery compartment 1 where the air inlet 11 is located, and the air intake airflow from the air inlet 11 is input into the battery compartment 1 through the air filter 8. The air filter 8 is installed inside the battery compartment 1 by pressing it with a clamping block. The air filter 8 can be configured as a filter screen structure, which can filter the airflow entering the battery compartment 1 to reduce the risk of suspended particles in the airflow entering the battery compartment 1, thereby reducing the risk of damage to the battery module 5 inside the battery compartment 1.

[0032] Furthermore, a partition is provided inside the battery compartment 1, and the air filter 8 is pressed and installed on the partition inside the battery compartment 1 based on the clamping block. The partition separates the area where the battery module 5 and the air inlet 11 are located, so that the airflow enters the battery compartment 1 from the air inlet 11, passes through the air filter 8 of the partition, and enters the area where the battery module 5 is located, so as to complete the heat dissipation requirements of the battery module 5.

[0033] Specifically, a dynamic pressure air inlet 13 is provided at one end of the battery compartment 1. The dynamic pressure air inlet 13 is located at the windward end of the battery compartment 1. When the aircraft is in cruise mode, all the openings and covers of the battery compartment 1 need to be closed to reduce flight drag. The air inlet 11 cover is in a negative pressure zone, where the air pressure inside the compartment is greater than the air pressure outside the compartment. The air inlet 11 cover will be pressed tightly against the air inlet 11. The dynamic pressure air inlet 13 increases the pressure inside the compartment, thus adding a greater load to the closing of the air inlet 11 cover, making its pressing effect better.

[0034] This utility model embodiment provides a heat dissipation device for an external battery compartment 1 of an aircraft. By setting an air inlet 11 and an air outlet 12 that can be opened and closed, and cooperating with the internally set drive fan 7, the heat dissipation device can be integrated into the main structure of the battery compartment 1 through the cooperation between the air inlet 11 and the air outlet 12, so as to achieve a heat dissipation structure design for an external battery compartment 1 that is simple in structure and has high heat dissipation performance.

[0035] Furthermore, the above description provides a detailed introduction to the aircraft external battery compartment heat dissipation device provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A heat dissipation device for an aircraft external battery compartment, characterized in that, The heat dissipation device includes: an air inlet located at one end of the battery compartment, an air outlet located at the other end of the battery compartment, and a drive fan located inside the battery compartment. The air inlet of the battery compartment is provided with a first cover that flips inward, and the air outlet of the battery compartment is provided with a second cover that flips outward. The drive fan is used to drive the airflow in the battery compartment from the end where the air inlet is located to the end where the air outlet is located, and the first cover and the second cover are in the open state based on the air pressure difference.

2. The aircraft external battery compartment heat dissipation device as described in claim 1, characterized in that, The battery compartment contains several battery modules and several cooling fans. One of the cooling fans is located at the front end of one of the battery modules, and the airflow direction of the cooling fan is towards the air outlet.

3. The aircraft external battery compartment heat dissipation device as described in claim 2, characterized in that, The battery module is equipped with heat dissipation fins, and the airflow from the cooling fan passes through the heat dissipation fins.

4. The aircraft external battery compartment heat dissipation device as described in claim 1, characterized in that, The first cover plate is hinged to the air inlet based on the first hinge, and the first cover plate adheres to the air inlet based on its own weight and maintains the air inlet in a closed state.

5. The aircraft external battery compartment heat dissipation device as described in claim 4, characterized in that, A limiting block is provided inside the battery compartment, and the limiting block is located on one side of the first hinge installation position of the air inlet.

6. The aircraft external battery compartment heat dissipation device as described in claim 1, characterized in that, The second cover plate is hinged to the air outlet based on the second hinge, and the second cover plate forms an outward-folding movable structure based on the second hinge.

7. The aircraft external battery compartment heat dissipation device as described in claim 6, characterized in that, A tension spring assembly is installed inside the battery compartment. One end of the tension spring assembly is fixed inside the battery compartment, and the other end of the tension spring assembly is fixed to the second cover plate. The second cover plate is attached to the air outlet based on the tension spring assembly to maintain the air outlet in a closed state.

8. The aircraft external battery compartment heat dissipation device as described in claim 1, characterized in that, An air filter is installed inside the battery compartment. The air filter is located at one end of the battery compartment where the air inlet is located, and the air intake airflow from the air inlet is input into the battery compartment through the air filter.

9. The aircraft external battery compartment heat dissipation device as described in claim 8, characterized in that, The air filter is installed inside the battery compartment by pressing it together with a clamping block.

10. The aircraft external battery compartment heat dissipation device as described in claim 1, characterized in that, A dynamic pressure air inlet is provided at one end of the battery compartment.

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