Vehicle-mounted high-voltage battery pack of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and particularly discloses a vehicle-mounted high-voltage battery pack of an unmanned aerial vehicle. Comprising a shell, a waterproof cover and a battery pack, the shell is provided with a storage cavity, and the waterproof cover is arranged in the storage cavity and adopts a multi-layer waterproof structure design. The waterproof cover comprises a cover body and a shell, a first waterproof groove, a second waterproof groove and a third waterproof groove are formed in the two sides and the connecting position of the waterproof cover respectively, the first waterproof groove is a semicircular arc face and provided with a flow guide face, the second waterproof groove is an arc face array, and the third waterproof groove adopts a rectangular section and is provided with waterproof arc-shaped areas at the four corners. A first water leakage hole is formed in the bottom of the waterproof cover, and a drainage groove is formed in the storage cavity. The battery pack is composed of a plurality of cylindrical single batteries, and the single batteries are welded through metal connecting pieces and installed in the round installation holes of the elastic damping pads. The shell is further provided with a heat dissipation assembly and a ventilation opening so as to optimize heat dissipation. According to the utility model, the reliability of the battery pack in a vehicle-mounted mobile environment is remarkably improved through multiple waterproof, vibration reduction and heat dissipation designs.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to UAV vehicle-mounted high-voltage battery packs. Background Technology

[0002] With the rapid development of drone technology, its application in fields such as agricultural plant protection, power line inspection, and emergency rescue is becoming increasingly widespread. However, when drones perform long-duration missions, their endurance becomes a key factor restricting their work efficiency. To solve this problem, vehicle-mounted mobile power supply solutions have emerged, which involve using a vehicle to carry a high-voltage battery pack and using power lines to continuously power the drone in flight.

[0003] However, when vehicle battery packs are used outdoors, they are frequently exposed to rain, high humidity, or muddy environments. Traditional battery packs lack sufficient waterproofing, making them susceptible to short circuits, corrosion, and even thermal runaway due to moisture infiltration, severely impacting power supply safety and equipment lifespan. Continuous vibrations and impacts during vehicle operation can loosen internal connections within the battery pack, leading to poor contact or open circuit risks. Furthermore, high-voltage battery packs generate significant heat during prolonged discharge; inadequate heat dissipation design can accelerate battery aging and even pose safety hazards. Current waterproofing designs for battery packs often employ simple sealants or waterproof membranes, which, while blocking some moisture, lack an active drainage mechanism. If the seal fails or condensation accumulates, internal circuitry damage can still occur.

[0004] Patent "An Assembled Lithium Battery Housing" (Publication No. CN220628051U, hereinafter referred to as Prior Art 1) discloses a lithium battery housing, which includes three main components: a base, a protective shell, and a top cover. These parts are combined together through a designed connection method, making the entire housing both stable and easy to disassemble. Specifically, the base and the protective shell are connected by limiting posts and reinforcing nuts, while the top cover and the protective shell are fixed by fixing screws. This enables quick assembly and disassembly, greatly improving the convenience of maintenance and replacement. In particular, when it is necessary to remove the lithium battery pack, it can be quickly disassembled, solving the problem of inconvenience in replacing traditional one-piece housings. However, regarding battery protection, Prior Art 1 does not specifically address the special needs of drone vehicle-mounted high-voltage battery packs in outdoor operations, especially in terms of waterproofing, shock resistance, and heat dissipation. Utility Model Content

[0005] In view of this, this utility model provides a vehicle-mounted high-voltage battery pack for drones to solve the problems of short circuits and corrosion caused by rainwater infiltration or condensation accumulation in vehicle environments.

[0006] This utility model provides a vehicle-mounted high-voltage battery pack for unmanned aerial vehicles (UAVs), comprising: a shell with a storage cavity; a waterproof cover disposed within the storage cavity to prevent water from entering the internal battery pack; a battery pack disposed inside the waterproof cover and used to power the UAV; the battery pack comprising multiple cylindrical battery cells; wherein the waterproof cover further comprises a cover body and a shell, and waterproof grooves are provided on both sides of the cover body and at the connection between the cover body and the shell; a first drainage hole is also provided at the bottom of the waterproof cover; wherein a drainage groove is also provided within the storage cavity to drain internal water.

[0007] Preferably, the waterproof groove includes a first waterproof groove, a second waterproof groove, and a third waterproof groove; the first waterproof groove is disposed at both ends of the side of the cover, and the second waterproof groove includes a plurality of the first waterproof grooves disposed between the two ends of the side of the cover.

[0008] Preferably, the first waterproof groove is a semi-circular arc surface and has a guide surface that connects to the edge of the cover.

[0009] Preferably, the second waterproof groove is arc-shaped and the two second waterproof grooves are connected by a plane.

[0010] Preferably, the third waterproof groove is disposed at the connection between the cover and the shell; the cross-section of the third waterproof groove is rectangular, and waterproof arc-shaped areas are provided at the four corners of the third waterproof groove; the arc surface of the waterproof arc-shaped area continuously transitions to connect the two adjacent sides.

[0011] Preferably, each of the waterproof arc-shaped areas is provided with a second water leakage hole.

[0012] Preferably, it further includes a heat dissipation component disposed in the storage cavity, the heat dissipation component being used to dissipate heat from the battery pack; and the outer casing is provided with a vent.

[0013] Preferably, adjacent battery cells are electrically connected by a metal connecting piece; wherein the connecting piece is a sheet-shaped conductor, with its two ends welded to the electrode tabs of the two battery cells respectively.

[0014] Preferably, it also includes a vibration damping mounting component, wherein the vibration damping mounting pad is provided with a plurality of circular mounting holes; wherein the diameter of the circular mounting holes matches the outer diameter of the battery cell, so that the battery cell is embedded therein.

[0015] Preferably, the vibration damping mounting pad is made of an elastic material to cushion the vibration and impact of the battery cell.

[0016] The drone vehicle-mounted high-voltage battery pack provided by this utility model has the following beneficial effects:

[0017] The drone-mounted high-voltage battery pack of this invention features a waterproof design, effectively addressing the waterproof challenges of complex outdoor environments. The waterproof cover employs a multi-layered protective structure, including first and second waterproof grooves on the sides of the cover, and a third waterproof groove at the connection between the cover and the housing, forming multiple waterproof barriers. Specifically, the semi-circular arc design and guide surface of the first waterproof groove direct water away from critical areas; the arc array of the second waterproof groove further enhances the waterproof effect; and the rectangular cross-section of the third waterproof groove, combined with the four corner waterproof arc areas, ensures reliable sealing at the connection points. This three-dimensional waterproof structure design allows the battery pack to remain internally dry even in rainy or high-humidity environments.

[0018] Furthermore, the design incorporates active drainage, forming a complete "prevention and drainage combined" system by installing drainage holes at the bottom of the waterproof tank and drainage channels within the storage cavity. Even if a small amount of water seeps in, it can be quickly drained through these channels, preventing water accumulation from damaging the battery pack. This design not only significantly improves the battery pack's operational reliability in harsh environments but also reduces the risk of failure and maintenance costs due to water ingress, providing a long-lasting and stable power guarantee for drone vehicle power supply. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0020] Figure 1 This is a schematic diagram of the structure of the vehicle-mounted high-voltage battery pack for drones;

[0021] Figure 2 This is a structural diagram of the waterproof cover;

[0022] Figure 3 This is a cross-sectional structural diagram of the drone's vehicle-mounted high-voltage battery pack;

[0023] Figure 4 This is a structural schematic diagram of part of the battery pack and vibration damping mounting components;

[0024] Parts and their numbers in the diagram:

[0025] 100 - outer casing, 110 - storage cavity, 120 - drainage groove, 130 - ventilation opening;

[0026] 200-Waterproof cover, 210-Cover body, 211-First waterproof groove, 212-Second waterproof groove, 213-Third waterproof groove, 214-First water leakage hole, 216-Guiding surface, 217-Waterproof arc-shaped area, 218-Second water leakage hole, 220-Shell;

[0027] 300 - Battery pack, 310 - Battery cell, 320 - Connecting piece;

[0028] 400 - Vibration damping mounting component, 410 - Mounting hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0030] Example 1

[0031] Please see Figure 1This utility model provides a vehicle-mounted high-voltage battery pack for unmanned aerial vehicles (UAVs). In practical applications, UAVs, due to their design and functional limitations, often cannot continuously perform long-duration tasks. To overcome this limitation, a battery pack 300 is used to provide energy to the UAV. Furthermore, to ensure the UAV can smoothly execute tasks along a predetermined trajectory, the battery pack 300 is installed on a moving vehicle, and a circuit is established to continuously replenish the power to the UAV in flight. This method not only improves the operational efficiency of the UAV but also greatly expands its application range and operating time. However, given the complexity and variability of the working environment, traditional battery packs 300 often struggle to adapt to these complex working conditions. Therefore, to effectively cope with these complex working environments, a new type of battery pack 300 is designed, which is waterproof, thereby ensuring stable performance under various harsh conditions.

[0032] Please see Figure 1 and Figure 2 In this embodiment, the UAV vehicle-mounted high-voltage battery pack includes a housing 100, a battery pack 300, and a waterproof cover 200. The housing 100 has a storage cavity 110. The waterproof cover 200 is disposed inside the storage cavity 110 and is used to prevent water from entering the internal battery pack 300. The battery pack 300 is disposed inside the waterproof cover 200 and is used to power the UAV. The battery pack 300 includes multiple cylindrical battery cells 310. The waterproof cover 200 also includes a cover body 210 and a housing 220. Waterproof grooves are provided on both sides of the cover body 210 and at the connection between the cover body 210 and the housing 220. The bottom of the waterproof cover 200 is also provided with a first drainage hole 214. The storage cavity 110 is also provided with a drainage groove 120 for draining internal water.

[0033] In use, the drone's vehicle-mounted high-voltage battery pack 300 is installed in a car and connected to the drone via a pre-set wiring harness. When the drone's power is low during a mission, it can be powered by the battery pack 300. In the presence of rain or other water sources, the outer casing 100 provides initial isolation. If rain or other water sources enter the outer casing 100, the waterproof cover 200 effectively prevents rain or other water sources from entering the battery pack 300, ensuring stable operation of the battery pack 300 under various harsh weather conditions. If water accidentally enters the waterproof cover 200, it will first flow into the waterproof groove and drain through the first drainage hole 214, and then further drain through the drainage groove 120 in the storage cavity 110, thus providing comprehensive protection for the battery pack 300 from water damage. This design not only improves the drone's working efficiency but also greatly enhances its ability to adapt to complex environments.

[0034] Further, please see Figure 2 and Figure 3 The waterproof groove includes a first waterproof groove 211, a second waterproof groove 212, and a third waterproof groove 213; the first waterproof groove 211 is disposed at both ends of the side of the cover 210, and the second waterproof groove 212 includes a plurality of the first waterproof grooves 211 disposed between the two ends of the side of the cover 210.

[0035] In use, when rainwater or other water sources enter the outer casing 100, they will enter the interior of the waterproof cover 200 through the top, sides, and connection points with the housing 220, posing a threat to the battery pack 300. At this time, the rainwater or other water sources will be buffered by the space between the first waterproof groove 211 and the second waterproof groove 212, slowing the water flow and guiding it towards the second waterproof groove 212. Subsequently, the water will continue to flow along the path of the second waterproof groove 212 until it reaches the storage cavity 110 and is discharged through the drainage groove 120 and the first drain hole 214. If rainwater or external water enters through the connection point between the cover 210 and the housing 220, it will enter the third waterproof groove 213. The third waterproof groove 213 can effectively intercept and collect water seeping in from the connection point and discharge it into the storage cavity through the second drain hole 218. Thus, the multi-layered waterproof groove design forms a system that gradually slows down the water flow, collects and discharges water, greatly improving the waterproof performance of the waterproof cover 200. At the same time, this design also ensures that even if the outer casing 100 is damaged or a part of the waterproof cover 200 is leaked, the battery pack 300 can be protected from moisture to the greatest extent through the interception effect of other waterproof grooves.

[0036] Further, please see Figure 2 The first waterproof groove 211 is designed with a semi-circular arc surface and is provided with a guide surface 216 that connects to the edge of the cover 210. This design can more effectively guide the water flow along the direction of the guide surface 216, avoiding direct impact of the water flow on the edge of the waterproof groove, reducing the impact force of the water flow on the waterproof structure, thereby improving the durability and waterproof effect of the waterproof groove. The semi-circular arc surface design also increases the contact area between the water flow and the waterproof groove, allowing the water flow to be more smoothly dispersed into the second waterproof groove 212, further improving the waterproof performance. In addition, the guide surface 216 also allows the water flow to enter the next stage of the waterproof structure more smoothly, ensuring the smoothness and efficiency of the entire waterproof system.

[0037] Furthermore, the second waterproof groove 212 is arc-shaped, and each pair of second waterproof grooves 212 is connected by a plane. This arrangement further optimizes the water flow path, allowing the water flowing from the first waterproof groove 211 to be more smoothly distributed into each second waterproof groove 212. The planar connection design between each pair of second waterproof grooves 212 not only enhances the structural stability between the waterproof grooves but also effectively reduces turbulence during water flow transitions, avoiding additional pressure caused by water flow impact, thereby improving the stability and waterproof performance of the entire waterproof system. In addition, this design facilitates cleaning and maintenance, ensuring the reliability and durability of the waterproof cover 200 during long-term use.

[0038] Furthermore, the third waterproof groove 213 is disposed at the connection between the cover 210 and the shell 220; the cross-section of the third waterproof groove 213 is rectangular, and waterproof arc-shaped areas 217 are provided at the four corners of the third waterproof groove 213; the arc surface of the waterproof arc-shaped area 217 continuously transitions between adjacent sides. Each of the waterproof arc-shaped areas 217 is provided with a second leakage hole 218. This can further enhance the waterproof performance at the connection between the cover 210 and the shell 220. The rectangular cross-section design of the third waterproof groove 213 allows water to flow more orderly in this area, reducing disordered diffusion of water and possible leakage points. The waterproof arc-shaped areas 217 at the four corners not only optimize the water flow path, allowing water to smoothly bypass the right-angle area and reducing water flow impact and eddy current phenomena caused by right angles, but also enhance the waterproof sealing of this area through the continuous transition arc surface design. The second drainage hole 218 is designed to drain any water that may seep in, preventing water accumulation from damaging the waterproofing system and thus ensuring the reliability and durability of the entire waterproofing structure.

[0039] In this embodiment, an active drainage function is integrated. By setting drainage holes at the bottom of the waterproof tank and configuring drainage channels 120 within the storage cavity 110, a complete "prevention and drainage combined" system is formed. Even if a small amount of water seeps in, it can be quickly drained through these drainage channels, preventing water accumulation from damaging the battery pack. This design not only significantly improves the reliability of the battery pack in harsh environments but also reduces the risk of failure and maintenance costs caused by water ingress, providing a long-lasting and stable power guarantee for the vehicle-mounted power supply of drones.

[0040] Further, please see Figure 1The device also includes a heat dissipation component disposed within the storage cavity 110, which dissipates heat from the battery pack 300. The outer casing 100 is provided with a vent 130. The heat dissipation component effectively dissipates the heat generated by the battery pack 300 during operation, preventing the battery pack 300 from experiencing performance and lifespan issues due to overheating. The heat dissipation component design ensures that the battery pack 300 maintains a stable temperature even under high-intensity, long-term operation, thereby improving the reliability and safety of the entire device. The vent 130 on the outer casing 100 further enhances the heat dissipation effect, allowing heat to be expelled more quickly, while also providing a channel for air circulation inside the device, helping to keep the inside of the device dry and clean. This design not only improves the performance of the device but also extends its service life.

[0041] Furthermore, adjacent battery cells 310 are electrically connected via metal connecting pieces 320. The connecting piece 320 is a sheet-like conductor, with its two ends welded to the electrode tabs of the two battery cells 310 respectively. This ensures a stable electrical connection between the battery cells 310, thereby improving the overall performance and reliability of the battery pack 300. As a sheet-like conductor, the metal connecting piece 320 has good conductivity and mechanical strength, capable of withstanding the current and vibration generated by the battery pack 300 during operation. Fixing the two ends of the connecting piece 320 to the electrode tabs of the battery cells 310 by welding not only ensures a strong electrical connection but also effectively avoids increased resistance and overheating problems caused by poor contact. This design allows the battery pack 300 to provide stable power while adapting to various complex working environments, improving the practicality and durability of the entire device.

[0042] Example 2

[0043] Please see Figure 4 This utility model embodiment provides a vehicle-mounted high-voltage battery pack for drones. In actual use, the car will move along with the drone's flight, and vibrations will be generated during the movement, which will have a certain impact on the battery pack 300.

[0044] Therefore, to enhance the shock resistance of the battery pack 300, this embodiment includes a vibration damping mounting component 400. The vibration damping mounting pad has multiple circular mounting holes 410; the diameter of each circular mounting hole 410 matches the outer diameter of the individual battery cell 310, allowing the individual battery cell 310 to be embedded within it. The vibration damping mounting pad is made of an elastic material to cushion the vibration and impact of the individual battery cell 310.

[0045] The vibration damping mounting pad can effectively absorb and disperse the vibration energy generated during vehicle operation, protecting the battery cell 310 from damage.

[0046] Meanwhile, the matching design between the circular mounting hole 410 and the outer diameter of the battery cell 310 ensures the stability and firmness of the battery cell 310 within the vibration-damping mounting pad, preventing displacement or collision of the battery cells 310 due to vibration. This anti-vibration design not only improves the reliability and safety of the battery pack 300 but also ensures the stability and durability of the drone during flight, providing strong support for the successful completion of its mission.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vehicle-mounted high-voltage battery pack for unmanned aerial vehicles, characterized in that, include: The outer casing (100) is provided with a storage cavity (110). A waterproof cover (200) is provided inside the storage cavity (110) and is used to prevent water from entering the internal battery pack (300); A battery pack (300) is disposed inside the waterproof cover (200) and is used to power the drone; the battery pack (300) includes a plurality of cylindrical battery cells (310). The waterproof cover (200) further includes a cover body (210) and a shell (220). Waterproof grooves are provided on both sides of the cover body (210) and at the connection between the cover body (210) and the shell (220). A first water leakage hole (214) is also provided at the bottom of the waterproof cover (200). The storage cavity (110) is also provided with a drainage trough (120) for draining the water inside. The waterproof groove includes a first waterproof groove (211), a second waterproof groove (212), and a third waterproof groove (213); The first waterproof groove (211) is disposed at both ends of the side of the cover (210), and the second waterproof groove (212) includes a plurality of them and is disposed between the first waterproof grooves (211) at both ends of the side of the cover (210); The first waterproof groove (211) is set in a semi-circular arc surface and is provided with a guide surface (216) connected to the edge of the cover (210). The second waterproof groove (212) is arc-shaped, and the two second waterproof grooves (212) are connected by a plane; The third waterproof groove (213) is provided at the connection between the cover (210) and the shell (220); The third waterproof groove (213) has a rectangular cross-section, and waterproof arc-shaped areas (217) are provided at the four corners of the third waterproof groove (213). The curved surface of the waterproof arc-shaped area (217) is continuously connected to the two adjacent sides; Each of the aforementioned waterproof arc-shaped areas (217) is provided with a second drainage hole (218).

2. The UAV vehicle-mounted high-voltage battery pack according to claim 1, characterized in that, It also includes a heat dissipation component disposed in the storage cavity (110), the heat dissipation component being used to dissipate heat for the battery pack (300); Furthermore, the outer casing (100) is provided with a vent (130).

3. The UAV vehicle-mounted high-voltage battery pack according to claim 1, characterized in that, Adjacent battery cells (310) are electrically connected by metal connecting pieces (320); The connecting piece (320) is a sheet-shaped conductor, with its two ends welded to the electrode tabs of the two battery cells (310).

4. The UAV vehicle-mounted high-voltage battery pack according to claim 1, characterized in that, It also includes a vibration damping mounting component (400), which has a plurality of circular mounting holes (410). The diameter of the circular mounting hole (410) matches the outer diameter of the battery cell (310) so that the battery cell (310) can be embedded therein.

5. The UAV vehicle-mounted high-voltage battery pack according to claim 4, characterized in that, The vibration damping mounting component (400) is made of an elastic material and is used to buffer the vibration and impact of the battery cell (310).

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