CN219226479U - Battery box of propeller aircraft - Google Patents

Abstract

The utility model relates to the field of battery boxes, and particularly discloses a battery box for a propeller aircraft, which is internally provided with a battery and comprises a box body, a box cover, a partition frame and cooling fins, wherein the box body is cuboid, the upper end and the lower end of the left side wall and the right side wall of the box body are respectively provided with a connecting plate, the connecting plates are provided with through holes for connecting the battery box with the propeller aircraft through bolts, the box cover is arranged at the upper end of the box body, the box cover is connected with the front side wall and the rear side wall of the box body through bolts, the partition frame is arranged in the box body, at least one accommodating cavity is formed between the partition frame and the box body, the battery is arranged in the accommodating cavity, and the cooling fins are arranged at the lower end of the box body. The box body and the box cover have high specific strength and high specific modulus, small overall weight and high corrosion resistance, and the bulkhead is made of flame retardant materials, so that the safety performance of the battery box is improved, the battery can keep good performance under the conditions of high vibration and flight, and the radiating fins can fully release heat generated by charging and discharging of the battery and prevent the battery from being damaged by overheating.

Description

Battery box of propeller aircraft

Technical Field

The utility model relates to the field of battery boxes, in particular to a battery box of a propeller plane.

Background

The battery is used as a main component of the propeller aircraft, the structure, the quality, the strength, the durability and the like of the battery can influence the power supply system and the safety performance of the aircraft, and the battery box carries a battery pack, so that the strength and the rigidity of the battery box can meet the use requirement to ensure the safety of the battery box, the reasonable design of the structure and the selection of materials of the battery box is important, in addition, the weight of the propeller aircraft needs to be reduced as much as possible, so that the light weight production of the battery box is gradually valued by enterprises and society, and the quality of the box body is reduced as much as possible under the premise of meeting the strength of the light weight battery box. The traditional battery box is mainly divided into a resin battery box and a metal battery box, wherein the resin battery box is simple to manufacture, but is insufficient in strength and rigidity and easy to age, and the metal battery box is difficult to integrally process and large in mass and does not accord with the lightweight design. In addition, the existing battery box is poor in heat dissipation, is not suitable for high-vibration and flying complex environments, cannot resist flame when the battery burns, and can damage the whole aircraft. Aiming at the problems, the novel battery box of the propeller aircraft is researched and designed, and the battery box is very necessary to overcome the problems existing in the existing battery box.

Disclosure of Invention

The utility model provides a battery box of a propeller aircraft, which aims to solve the problems that the existing battery box is insufficient in strength and rigidity, poor in heat dissipation, not applicable to complex environments of high vibration and flying, and not flame-retardant when a battery burns.

The technical scheme adopted by the utility model for achieving the purpose is as follows: the utility model provides a battery is placed to screw aircraft battery case, its inside, includes box, lid, bulkhead and fin, the box be the cuboid just the upper and lower both ends of the left and right sides wall of box all are equipped with outstanding connecting plate, the connecting plate is equipped with the through-hole for with battery case and screw aircraft bolted connection, the lid set up in the box upper end, the lid with the front and back lateral wall bolted connection of box, the bulkhead set up in inside the box, the bulkhead with form at least one accommodation chamber between the box, the battery set up in the accommodation chamber, the fin set up in the box lower extreme.

Further, the box body is of a three-layer structure, the outermost layer is a box body carbon fiber composite material skin, the middle is a box body PMI foam interlayer, and the inner wall is a box body glass fiber skin.

Further, the thickness of the carbon fiber composite material skin of the box body is 0.1-0.3 mm, and the thickness of the glass fiber skin of the box body is 0.1-0.3 mm.

Further, the thickness of the side wall and the bottom of the box body is 8 mm-12 mm.

Further, a copper sheet is arranged in the bottom of the box body and connected with the radiating fins, and the radiating fins are 10 groups.

Further, the box cover is of a three-layer structure, the outermost layer is a box cover carbon fiber composite material skin, the middle is a box cover PMI foam interlayer, and the inner wall is a box cover glass fiber skin.

Further, the thickness of the cover carbon fiber composite material skin is 0.1-0.3 mm, the thickness of the cover glass fiber skin is 0.1-0.3 mm, and the thickness of the cover is 8-12 mm.

Further, two wire inlets and outlets are arranged at the center of the box cover.

Further, the height of the bulkhead is lower than the height of the front and rear side walls of the box body.

Further, the separator is a flame-retardant separator, and the thickness of the separator is 5mm.

The box body and the box cover of the battery box of the propeller aircraft have high specific strength and high specific modulus, the overall weight of the battery box is greatly reduced under the same strength, in addition, the box body and the box cover of the battery box have higher anti-corrosion capability, the aging corrosion of an exposed area can be effectively avoided, the partition frame of the battery box is made of flame-retardant materials, the safety performance of the battery box is further improved, under the combined action of the partition frame and the box body, the battery can keep good performance under the conditions of high vibration and flying, and the radiating fin can fully release heat generated by charging and discharging of the battery, so that the battery is prevented from being damaged due to internal overheating of the battery box.

Drawings

FIG. 1 is a schematic view of the overall structure of a battery compartment of a propeller aircraft in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic view of the internal structure of a battery case of a propeller aircraft in which a battery is placed according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the internal structure of a battery case of a propeller aircraft according to an embodiment of the present utility model;

fig. 4 is a schematic front view of a battery box of a propeller aircraft according to an embodiment of the present utility model;

fig. 5 is a schematic view of a heat sink according to an embodiment of the utility model.

In the figure: 1. through holes 2, wire inlets and outlets 3, box covers 4, a box body 5, threaded holes 6, batteries 7, a partition frame 8 and cooling fins.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model, and terms "mounted", "connected", or "connected" should be construed broadly, and may be fixed, or may be detachable, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

1-5, a battery 6 is placed in the battery box of the propeller aircraft, including a box 4, a box cover 3, a bulkhead 7 and a cooling fin 8, the box 4 is cuboid, the upper and lower ends of the left and right side walls of the box 4 are all provided with protruding connecting plates, the connecting plates are provided with through holes, 3 through holes can be formed in each connecting plate for connecting the battery box with the propeller aircraft bolts, the box cover 3 is arranged at the upper end of the box 4, threaded holes 5 are formed at the contact positions of the front and rear side walls of the box cover 3 and the box 4, bolts penetrate through the threaded holes 5, the box cover 3 is connected with the box 4, the bulkhead 7 is arranged in the box 4, at least one accommodating cavity is formed between the bulkhead 7 and the box 4, the accommodating cavity can protect the battery 6, the battery 6 can still be protected under the high-vibration and flying environment, the battery 6 is arranged in the accommodating cavity, and the cooling fin 8 is arranged at the lower end of the box 4.

The box body 4 is of a three-layer structure, the outermost layer is a box body carbon fiber composite material skin, the middle is a box body PMI foam interlayer, and the inner wall is a box body glass fiber skin. Preferably, the thickness of the box carbon fiber composite material skin can be 0.1 mm-0.3 mm, the thickness of the box glass fiber skin can be 0.1 mm-0.3 mm, more preferably, the thickness of the box carbon fiber composite material skin can be 0.2mm, and the thickness of the box glass fiber skin can be 0.2mm. Preferably, the thickness of the side walls and the bottom of the case 4 may be 8mm to 12mm, and more preferably, the thickness of the side walls and the bottom of the case 4 may be 10mm. The inside copper sheet that is equipped with in box 4 bottom, the thickness of copper sheet can be 2mm, and the copper sheet is connected with a plurality of fin 8, and fin 8 can be 10 groups.

The box cover 3 is also of a three-layer structure, the outermost layer is a box cover carbon fiber composite material skin, the middle is a box cover PMI foam interlayer, and the inner wall is a box cover glass fiber skin. Preferably, the thickness of the cover carbon fiber composite material skin can be 0.1 mm-0.3 mm, the thickness of the cover glass fiber skin can be 0.1 mm-0.3 mm, more preferably, the thickness of the cover carbon fiber composite material skin can be 0.2mm, and the thickness of the cover glass fiber skin can be 0.2mm. Preferably, the thickness of the cover 3 may be 8mm to 12mm, and more preferably, the thickness of the cover 3 may be 10mm. Two electric wire inlets and outlets 2 can be arranged in the center of the box cover 3, and the electric wires are used for charging batteries in the battery box. The height of the partition frame 7 is lower than the height of the front and rear side walls of the box body 4, the partition frame 7 is a flame-retardant partition frame, and the thickness of the partition frame 7 can be 5mm.

The lid 3 and the box 4 of battery case are three layer construction, and lid 3 outmost is lid carbon fiber composite material covering, and the centre is lid PMI foam intermediate layer, and the inner wall is lid glass fiber covering, and box 4 outmost is box carbon fiber composite material covering, and the centre is box PMI foam intermediate layer, and the inner wall is box glass fiber covering, through setting up three layer construction, makes the battery case wholly have high specific strength and high specific modulus, and the battery case is nimble still easily integrated into one piece of designability to its quality can alleviate more than 40%, in addition owing to set up three layer construction, the battery case still can lead static, antiseep and ageing-resistant, anticorrosion. Through the partition frame 7, the box cover 3 and the box body 4 with three-layer structures, the battery box can still protect the safety of the battery under the high-vibration and flying environment. The spacer 7 is made of flame-retardant materials, so that the safety performance of the battery box is further improved. The radiating fins 8 arranged at the bottom of the battery box can conduct heat rapidly, so that the battery is prevented from being damaged due to overheating inside the battery box.

As the most preferable of the present embodiment, the size of the case 4 of the present battery case is: 560 mm x 435mm x 270mm. The inner partition frame 7 of the box body 4 is 5mm thick and 120mm high. The dimensions of the heat sink 8 are 400mm x 5mm x 30mm. The battery box cover 3 and the box body 4 adopt a foam sandwich composite structure, the whole composite material has good air tightness, is not easy to corrode, has higher structural rigidity, and can greatly lighten the whole weight of the battery box, the bottom of the box body 4 is inlaid with the cooling fin 8 of copper, and the cooling fin is embedded into one piece during manufacturing, so that the cooling copper sheet can fully release heat generated by charging and discharging of a battery. The middle bulkhead of the box body is 5mm thick, and the box body is made of mica sheets and flame retardant materials, so that the combustion of the battery can be effectively blocked. The connecting pieces of all parts are connected by gluing, and all the properties (including the adhesive property and the thermal expansion coefficient) of the materials are close, so that the glued surface is not damaged and cracks are not generated due to expansion and contraction.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. The utility model provides a battery (6) are placed to screw aircraft battery box, its inside, a serial communication port, including box (4), lid (3), bulkhead (7) and fin (8), box (4) just the upper and lower both ends of the left and right sides wall of box (4) all are equipped with the connecting plate, the connecting plate is equipped with the through-hole for with battery box and screw aircraft bolted connection, lid (3) set up in box (4) upper end, lid (3) with the front and back lateral wall bolted connection of box (4), bulkhead (7) set up in inside box (4), bulkhead (7) with form at least one accommodation chamber between box (4), battery (6) set up in the accommodation intracavity, fin (8) set up in box (4) lower extreme.

2. The battery box of the propeller aircraft according to claim 1, wherein the box body (4) is of a three-layer structure, the outermost layer is a box body carbon fiber composite material skin, the middle is a box body PMI foam interlayer, and the inner wall is a box body glass fiber skin.

3. A battery box for a propeller aircraft according to claim 2, wherein the thickness of the carbon fiber composite material skin of the box is 0.1 mm-0.3 mm, and the thickness of the glass fiber skin of the box is 0.1 mm-0.3 mm.

4. A battery compartment for a propeller aircraft according to claim 3, wherein the thickness of the side walls and bottom of the housing (4) is 8mm to 12mm.

5. The battery box of the propeller aircraft according to claim 1, wherein a copper sheet is arranged inside the bottom of the box body (4), the copper sheet is connected with the cooling fins (8), and the cooling fins (8) are in 10 groups.

6. The battery box of the propeller aircraft according to claim 1, wherein the box cover (3) has a three-layer structure, the outermost layer is a box cover carbon fiber composite material skin, the middle is a box cover PMI foam interlayer, and the inner wall is a box cover glass fiber skin.

7. The battery box of the propeller aircraft according to claim 6, wherein the thickness of the carbon fiber composite material skin of the box cover is 0.1-0.3 mm, the thickness of the glass fiber skin of the box cover is 0.1-0.3 mm, and the thickness of the box cover (3) is 8-12 mm.

8. A battery compartment for a propeller aircraft according to claim 1, characterized in that two wire access openings (2) are provided in the centre of the lid (3).

9. A battery compartment for a propeller aircraft according to claim 1, characterized in that the height of the spacer (7) is lower than the height of the front and rear side walls of the housing (4).

10. A battery compartment for a propeller aircraft according to claim 1, characterized in that the bulkhead (7) is a flame retardant bulkhead, the bulkhead (7) having a thickness of 5mm.

Images