CN106240798B - A kind of spar/energy-storage battery integral structure - Google Patents

A kind of spar/energy-storage battery integral structure Download PDF

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Publication number
CN106240798B
CN106240798B CN201610826843.6A CN201610826843A CN106240798B CN 106240798 B CN106240798 B CN 106240798B CN 201610826843 A CN201610826843 A CN 201610826843A CN 106240798 B CN106240798 B CN 106240798B
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China
Prior art keywords
spar
energy
storage battery
temperature
integral structure
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CN201610826843.6A
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CN106240798A (en
Inventor
张良
马成婧
杨穆清
王少奇
夏兴禄
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Beihang University
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Beihang University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C3/00Wings
    • B64C3/32Wings specially adapted for mounting power plant
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D27/00Arrangement or mounting of power plant in aircraft; Aircraft characterised thereby
    • B64D27/02Aircraft characterised by the type or position of power plant
    • B64D27/24Aircraft characterised by the type or position of power plant using steam, electricity, or spring force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/08Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems

Abstract

The present invention discloses a kind of spar/energy-storage battery integral structure, belongs to field of flight vehicle design.The present invention is fixed on by rib and fastening screw in spar using square-section spar, energy-storage battery, and spar is made to concentrate stand under load;There are PMI froth beds in spar, not only served as sandwich and born shear stress, but also kept the temperature as thermal insulation material for energy-storage battery;There is radiator fan at spar both ends, and form convection current using the gap between rib radiates for energy-storage battery.The present invention can substantially improve spar mechanical characteristic on the premise of energy-storage battery operating temperature is ensured, while simplify structure, mitigate weight, solar powered aircraft is made to have higher flight efficiency.

Description

A kind of spar/energy-storage battery integral structure
Technical field
The invention belongs to field of flight vehicle design, the specific one kind that designs can improve spar mechanical characteristic, control energy storage electricity Pond operating temperature, the spar/energy-storage battery integration new structure for mitigating aircaft configuration quality.
Background technology
Solar powered aircraft is reduces resistance, and generally use high aspect ratio wing, the rigidity of structure is poor, and working condition lower wing becomes Shape is serious.Long endurance solar powered aircraft needs energy-storage battery storing excess energy in the daytime, for night flying, most solar energy For aircraft using lithium ion battery as energy-storage battery, operating temperature section is usually 0-40 DEG C.Solar powered aircraft flies in low latitude During row, environment temperature is higher, and energy-storage battery work generates heat, and temperature can be more than 60 DEG C, it is necessary to radiate to it;Night is in advection During layer flight, environment temperature is low, and energy-storage battery temperature is less than -50 DEG C, it is necessary to be kept the temperature to it.Conventional solar powered aircraft or by energy storage Battery arrangement is in the nacelle or fuselage of the leading edge of a wing, and for keeping the temperature, foam outer needs to use outside batteries covering PMI foams One layer of hard shell of package protects battery.This energy-storage battery arrangement form concentrates stress not only bad for spar, also Extra construction weight can be brought, and the endurance of solar powered aircraft, voyage are heavily dependent on energy consumption and weight, therefore this Kind arrangement form is unfavorable for the promotion of solar powered aircraft performance.
The content of the invention
To overcome the shortcomings of above-mentioned existing solar powered aircraft energy-storage battery arrangement, the present invention provides one kind by spar With the integral structure form of energy-storage battery composition, energy-storage battery is arranged in spar, on the one hand utilizes energy-storage battery weight For spar off-load, on the other hand energy-storage battery is kept the temperature and radiated using spar structure.
A kind of spar/energy-storage battery integral structure of the present invention, energy-storage battery, energy storage are axially set in spar along spar Gap is left between battery circumferential direction and spar inner wall.Heat-insulation window is installed at spar both ends simultaneously, and spar both ends are also separately installed with Blower fan and exhaust fan.
From there through the mounting temperature sensor real-time perception spar internal temperature information in spar, and feed back to control electricity The switch control to blower fan and exhaust fan by control circuit compared with the temperature threshold set, is realized in road;And then it realizes The heat preservation of energy-storage battery and radiating control.
The advantage of the invention is that:
1st, spar of the present invention/energy-storage battery integral structure, energy-storage battery are distributed in wing girder so that flight course Middle energy-storage battery weight realizes self-balancing to the corresponding lift that wing generates at spar, improves wing mechanical characteristic, can be big It is big to reduce spar weight;
2nd, spar of the present invention/energy-storage battery integral structure, the PMI foam layers in spar, is serving as spar structure Meanwhile also as heat-barrier material, for the heat preservation of energy-storage battery during night flying, avoid conventional vacuum form bring it is additional Weight;
3rd, spar of the present invention/energy-storage battery integral structure, the radiator fan at spar both ends can be in energy-storage battery temperature in the daytime When degree is higher, heat is shed by cross-ventilation, it is simple in structure, it is easy to control;
4th, spar of the present invention/energy-storage battery integral structure, the rib of spar inner wall can make energy-storage battery be completely embedded into the wing In beam, limitation energy-storage battery is circumferentially displaced, while retains convection channel in energy-storage battery side wall, it is ensured that heat dissipation effect;
5th, spar of the present invention/energy-storage battery integral structure, fastening screw on spar is for limiting energy-storage battery along machine The span to displacement, it is convenient to change exhibition of the battery in spar according to demand to position, and the dismounting beneficial to energy-storage battery and dimension Shield;
6th, spar of the present invention/energy-storage battery integral structure, since energy-storage battery is not arranged in nacelle or fuselage, The shape of nacelle and fuselage is reduced with structure design limitation, can be effectively reduced resistance by design, be mitigated weight, to solar energy The feasibility that aircraft uninterruptedly cruises round the clock is of great significance.
Description of the drawings
Fig. 1 is spar of the present invention/energy-storage battery integral structure overall structure diagram;
Fig. 2 is spar of the present invention/energy-storage battery integral structure wing centre section girder construction and energy-storage battery mounting means schematic diagram;
Fig. 3 is radiator fan and heat-insulation window schematic view of the mounting position in spar of the present invention/energy-storage battery integral structure;
Fig. 4 is heat-insulation window opening ways schematic diagram in spar of the present invention/energy-storage battery integral structure;
Fig. 5 is spar of the present invention/energy-storage battery integral structure control mode block diagram.
In figure:
1- spar 2- energy-storage battery 3- ribs
4- fastening screw 5- heat-insulation window 6- radiator fans
7- temperature sensor 8- control circuit 101- carbon fiber skins
102-PMI foam layer 103- Kevs draw inner wall
Specific embodiment
Specifically name is done further to the present invention below in conjunction with the accompanying drawings.
The spar 1 of wing is designed as tubular structure, inside peace by a kind of spar/energy-storage battery integral structure of the present invention Energy-storage battery 2 is filled, as shown in Figure 1.
As shown in Fig. 2, the wingbar 1 design has three layers, respectively carbon fiber skin 101, PMI foams from outside to inside Interlayer 102, Kev draw inner wall 103.101 strength and stiffness of carbon fiber skin are good, are primarily subjected to drawing, pressure and shearing force;PMI steeps 102 light weight of foam interlayer, is primarily subjected to moment of flexure and torque, and anti-unstability ability is strong;Kev draws 103 intensity of inner wall high, and good toughness is used In bearing pulling force and shearing force, foam layer is prevented to be broken.Above-mentioned carbon fiber skin 101 and Kev draw 103 very thin thickness of inner wall, About 0.2~0.3mm, PMI foam layer 102 is relatively thick, about 8~10mm, can be effectively improved spar stress, mitigates the sun It can aero-structure weight.
Energy-storage battery 2 is provided with along spar 1 is axial inside spar 1, the quantity of energy-storage battery 2 is according to solar powered aircraft night Energy needed for cruise and energy-storage battery energy density determine, and the spacing of adjacent energy-storage battery 2 is by 1 loading conditions of spar and wing Aeroelastic characteristic determines.Energy-storage battery 2 is supported by " work " the font rib 3 being all provided in 1 inner wall circumferential direction of spar, realizes storage Can battery it is circumferentially positioned;And by being located at 2 rear and front end of energy-storage battery, through the fastening screw 4 of 1 opposite flank of spar, Realize the axially position of energy-storage battery 2.Energy-storage battery 2 is supported by rib 3, makes energy-storage battery 2 circumferential circumferential with 1 inner wall of spar Between form gap, as convection channel.
As shown in figure 3, being installed with heat-insulation window 5 on 1 both ends end face of spar, heat-insulation window 5 uses shutter, passes through Gas pressure can be automatically opened and closed, as shown in Figure 4;And 1 inner sealing of spar can be achieved after heat-insulation window 5 is closed.Spar 1 Both ends end is also equipped with radiator fan 6, radiator fan 6 is made to be close to 5 inside of heat-insulation window fixed.The heat dissipation at above-mentioned 1 both ends of spar In fan 6, one is blower fan by radiator fan 6, can suck external void inside spar 1;Another radiator fan 6 is 1 inner air of spar can be discharged spar 1 by exhaust fan.
A kind of spar/energy-storage battery integral structure of the present invention, is controlled by control module, realize inside spar 1 into/ Exhaust automatically controls.The control module includes temperature sensor 7 and control circuit 8, as shown in Figure 3.Wherein, temperature sensing Device 7 is installed on 1 internal face of spar, for 1 internal temperature information of real-time perception spar, and feeds back to control circuit 8.Control electricity Road 8 is installed on outside spar 1, is mountable to wing inner wall.As shown in figure 5, control circuit 8 is used for obtaining temperature sensor in real time The temperature value of measurement, and by temperature value compared with the temperature threshold (40 °) of setting in control circuit 8, when temperature value is more than During design temperature threshold value (solar powered aircraft is in the daytime in low-latitude flying), control circuit 8 sends control signal, controls 1 liang of spar The radiator fan 6 at end is opened, and a radiator fan 6 is made to dry into spar 1, another air draught out of beam of radiator fan 6, make every Hot window 5 automatically opens under gas pressure, and then cross-ventilation is formed in spar 1, and air-flow passes through convection channel, takes away energy storage A part of heat of battery 2, so as to reach radiating and cooling purpose.(the solar energy when temperature threshold of the environment temperature less than setting Plane night is in stratosphere flight), control circuit 8 sends control signal, and the radiator fan 6 at 1 both ends of control spar is closed, this When heat-insulation window 5 be also at closed state, can avoid 1 inner air and outer air of spar that convection current, and since 1 section of spar is elongated, both ends occurs Temperature loss can be ignored caused by heat transfer.Energy-storage battery can generate certain heat when working, and pass through the PMI of spar 1 102 insulation effect of foam layer, these heats will not largely shed, so as to reach heat preservation purpose.
Above-mentioned temperature sensor 7 can set multiple at equal intervals along spar 1 is axial, while perceive axial multiple positions in spar 1 The temperature value put.The temperature value that each temperature sensor 7 measures is received from there through control circuit 8, and by each temperature value and temperature Degree threshold value is compared, if the temperature value of some temperature sensor measurement is less than temperature threshold, just opens heat insulation function, instead Heat sinking function open, so as to being more accurately controlled temperature, achieve the purpose that protect battery.

Claims (6)

1. a kind of spar/energy-storage battery integral structure, it is characterised in that:In spar, energy-storage battery is axially set along spar, Gap is left between energy-storage battery circumferential direction and spar inner wall;Heat-insulation window is installed at spar both ends simultaneously, and spar both ends are also pacified respectively Equipped with blower fan and exhaust fan;
Control module is further included, control module has temperature sensor and control circuit;Temperature sensor is used for the real-time perception wing Beam internal temperature information, and feed back to control circuit;Control circuit is used for obtaining the temperature value of temperature sensor measurement in real time, and By temperature value compared with the temperature threshold set in control circuit, when temperature value is more than design temperature threshold value, control electricity Road sends control signal, and control blower fan is opened with exhaust fan;When environment temperature is less than the temperature threshold set, control circuit hair Go out control signal, control blower fan is closed with exhaust fan;
Temperature sensor is axially set at equal intervals along spar, and the temperature of each temperature sensor measurement is received by control circuit Value, and each temperature value is compared with temperature threshold, if the temperature value of one of temperature sensor measurement is less than temperature threshold During value, just blower fan is controlled to be closed with exhaust fan, otherwise control blower fan is opened with exhaust fan.
2. a kind of spar/energy-storage battery integral structure as described in claim 1, it is characterised in that:Spar is designed as three-layered node Structure, respectively carbon fiber skin, PMI foam layers, Kev draw inner wall from outside to inside.
3. a kind of spar/energy-storage battery integral structure as claimed in claim 2, it is characterised in that:Carbon fiber skin and Kev Drawing inner wall thickness is 0.2~0.3mm;PMI foam layers thickness is 8~10mm.
4. a kind of spar/energy-storage battery integral structure as described in claim 1, it is characterised in that:Energy-storage battery passes through in the wing The rib support being all provided in beam inner wall circumferential direction.
5. a kind of spar/energy-storage battery integral structure as described in claim 1, it is characterised in that:Energy-storage battery is by being located at At energy-storage battery rear and front end, the fastening screw through spar opposite flank realizes axially position.
6. a kind of spar/energy-storage battery integral structure as described in claim 1, it is characterised in that:Heat-insulation window uses shutter Structure can be automatically opened and closed by gas pressure.
CN201610826843.6A 2016-09-14 2016-09-14 A kind of spar/energy-storage battery integral structure Active CN106240798B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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EP3863922A4 (en) * 2018-10-10 2022-06-15 Imagine Aero Inc. Aircraft spars with integrated power cells, and associated systems and methods

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DE102018202114A1 (en) 2018-02-12 2019-08-14 Airbus Defence and Space GmbH Battery assembly for the structural integration of batteries in a vehicle
DE102018202120A1 (en) 2018-02-12 2019-08-14 Airbus Defence and Space GmbH Battery assembly for the structural integration of batteries in a vehicle
DE102018204420A1 (en) * 2018-03-22 2019-09-26 Airbus Defence and Space GmbH Battery assembly for load-bearing structural integration of batteries in a vehicle
WO2020180376A2 (en) * 2019-03-01 2020-09-10 United Technologies Advanced Projects, Inc. Aircraft having hybrid-electric propulsion system with electric storage located in wings
US11440430B2 (en) 2019-04-30 2022-09-13 The Boeing Company Removable battery compression devices
CN114162335A (en) * 2020-09-11 2022-03-11 海鹰航空通用装备有限责任公司 Near space vehicle energy storage battery thermal management system
CN113955073B (en) * 2021-10-19 2023-10-20 西北工业大学 A filled battery case structure for aircraft wallboard structure

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Inventor after: Zhang Liang

Inventor after: Ma Chengjing

Inventor after: Yang Muqing

Inventor after: Wang Shaoqi

Inventor after: Xia Xinglu

Inventor before: Ma Dongli

Inventor before: Zhang Liang

Inventor before: Yang Muqing

Inventor before: Wang Shaoqi

Inventor before: Xia Xinglu

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