CN206820044U - Grid-stiffened composite structure, composite material grid plate and automobile batteries case - Google Patents

Abstract

The utility model provides a kind of grid-stiffened composite structure, is related to advanced composite material technical field, and the grid-stiffened composite structure includes intermediate plate, affixed first grid layer in side of the intermediate plate, affixed second grid layer of opposite side；Include multiple the first ribs being arranged side by side in first grid layer, include multiple second ribs being arranged side by side in second grid layer, first rib and the second rib are strip, and first rib and the second rib are arranged in angle in space.The grid-stiffened composite structure of the application, solves in the prior art that grid-stiffened composite structure is for using complete buckling as in the structure of control condition, the relatively low technical problem of the bulk strength of structure.The utility model additionally provides a kind of composite material grid plate, is obtained by grid-stiffened composite structure through composite panel moulding process.The utility model additionally provides a kind of automobile batteries case made of above-mentioned composite material grid plate.

Description

Grid-stiffened composite structure, composite material grid plate and automobile batteries case

Technical field

Advanced composite material technical field is the utility model is related to, more particularly, to a kind of grid-stiffened composite structure.This Utility model further relates to a kind of composite material grid plate and automobile batteries case with above-mentioned grid-stiffened composite structure.

Background technology

Composite refers to pass through specific work by the different material of several classes such as inorganic non-metallic, metal or organic polymer A kind of new material with new capability that skill is combined.By now, has there is a very long time in composite.Such as Glued board, the fiberglass of early stage.As advanced technology proposed higher requirement, especially aviation boat to material property in recent years Its field, advanced composite material occur therewith.Compared with the composite of early stage, the various aspects of performance of advanced composite material has Very big raising.For example, the rigidity and damping characteristic of glass fiber reinforced epoxy resin composite are good, in aircraft rotary wing system In, simple in construction, convenient maintenance hingeless rotor can be produced, and the acceleration of hingeless rotor and make There is great raising with the life-span.Therefore advanced composite material has excellent specific strength and specific stiffness, outstanding toughness and bullet Property deformability, be the focus in the research of current composite.

With research of the people to energy technology, the every field that energy resource consumption has been penetrated into daily life is reduced. By taking automotive field as an example, the development of new-energy automobile obtains the active support of the government.In addition, no matter which kind of the driving of automobile uses The energy, automotive light weight technology have always a demand for the direction updated.Advanced composite material it is in light weight, with traditional steel plate car body phase Than the weight of more than half can be mitigated, that is to say, that using the automobile of advanced composite material compared with orthodox car, oil consumption drop Low more than half part.

Recently, application form of the advanced composite material in engineering structure is in addition to traditional laminated plate structure, in succession again Develop a variety of space structures.For example, using space shuttle cabin section made of advanced composite material and airspace engine part, Its entirety is advanced composite material, significantly reduces fastener quantity, reduces manufacturing cost.Meanwhile add because employing The structure type of muscle, significantly improve overall structure bearing capacity, construction weight is also further reduced therewith.Engineering practice Show, the characteristics of advanced composite material space structure can fully play advanced composite material high specific strength, specific modulus, effectively The utilization rate of material is improved, and integration technology of preparing can be used its physical dimension is broken through by part level to component-level, is reduced Construction weight and there is wide design space, therefore, receiving the favor of aerospace engineering circle.

In advanced composite space structure, the Advanced Composite Grid of grid framing system enhancing is (also referred to as For Grid reinforced structures) it is a kind of special reinforced structure, there is higher designability, relatively low cost and higher damage-retardation Hinder unique premium properties such as tolerance limit.Existing Grid reinforced structures refer to by trellis reinforcement skeleton and by support composite layer The class formation that plywood, shell (barrel shell or conical shell) are formed and carried jointly, because trellis reinforcement skeleton is similar to net, therefore it is otherwise known as Advanced composite material network.The geometric properties of the structure are the arrangement of its muscle (or rib) and trend is by 2 to 4 directions One circulation pattern of composition.

In order to give full play to the characteristics of fiber axial carrying capacity is high, trellis (diamond-plaid, square grid, triangle lattice etc.) adds The continuous short distance of tendons skeleton generally use fibre bundle (band) lays mode and forms grid skeleton.Said structure has grid skeleton overall Property is good, the advantages of can meeting the design requirement of structure different parts.In order to avoid occur the common lamination of laminate and Micro-crack, grill unit is the constant redundant structure of geometry, even if local grid is damaged, the grid skeleton around it Still it is geometry not structure changes, therefore, cell structure viability is strong, is easy to carry out Cutout reinforcement operation, and have good damage-retardation Hinder ability.

But Advanced Composite Grid also has its own intrinsic advantage and disadvantage, can not substitute interlayer completely Structure.With deepening continuously for research, those skilled in the art have found that cell structure is more suitable for the amount of deflection or fundamental frequency with structure For the structure of control condition, and sandwich is then more suitable for the structure using complete buckling as control condition, and cell structure exists It is bad as the mechanical property in the structure of control condition using complete buckling, it is relatively low to be mainly manifested in easy fatigue failure, intensity.Its In, refer to by control condition of complete buckling, before structure occurs fatigue or destroyed, to meet the condition of complete buckling.Its In, bending deformation refers to, when the compressive load and shear-type load that plate is born in face reach certain numerical value, plate deviates original Poised state and the bending deformation phenomenon occurred.Those skilled in the art has found, by taking the plate of cell structure as an example, due to be each Anisotropy plate, load are at poised state before the numerical value that flexing occurs is reached, also with the presence of initial deflection in plate, Deflection deformation may also be produced.

To sum up, there is provided a kind of material of grid-stiffened composite structure, make it in complete buckling in the structure of control condition Performance it is more preferable, be those skilled in the art's urgent problem to be solved.

Utility model content

The purpose of this utility model is to provide a kind of grid-stiffened composite structure, to alleviate composite wood of the prior art Expect cell structure for being asked by the technology that in the structure of control condition, the bulk strength of structure is relatively low of complete buckling Topic.Another object of the present utility model is to provide a kind of composite material grid plate.A further object of the present utility model is to carry For a kind of automobile batteries case.

Grid-stiffened composite structure provided by the utility model, including intermediate plate, the side affixed first of the intermediate plate Grid layer, affixed second grid layer of opposite side；Include multiple the first ribs being arranged side by side in first grid layer, described the Include multiple second ribs being arranged side by side in two grid layers, first rib and the second rib are strip, institute The first rib and the second rib is stated to arrange in angle in space.

Further, first rib and/or the second rib include upper plate, riser and lower plate, it is described on The long side of the long side of plate and the lower plate is connected in two long sides of the riser；One plate face of the upper plate and institute It is affixed to state intermediate plate.

Further, the long side of the upper plate and the lower plate are arranged in the both sides of the plate face of the riser.

Further, the long side of the upper plate and the lower plate are arranged in the same side of the plate face of the riser.

Further, first rib and the angle of the second rib in space are in 90 °, 60 °, 30 ° and 45 ° One kind.

Composite material grid plate provided by the utility model, by above-mentioned grid-stiffened composite structure through composite panel into Type technique and obtain.

Further, side of first grid away from the intermediate plate and/or second grid are away from described Between the side of plate be provided with covering.

Further, the composite panel moulding process is co-curing.

The grid-stiffened composite structure provided by the utility model and composite material grid plate, including at least three-layered node Structure：Intermediate plate, and it is located at the first grid layer and the second grid layer of intermediate plate both sides respectively.Wherein, include in the first grid layer Multiple the first ribs being arranged side by side, the second grid layer is interior to include multiple second ribs being arranged side by side, the first rib and second Rib is arranged in angle in space.I.e. in each grid layer, its rib is all arranged side by side, and is not handed between rib two-by-two The point of fork.From the point of view of in space, the first rib and second rib are in an angle.

The grid-stiffened composite structure provided by the utility model, when using complete buckling as control condition, intensity is more It is high.The grid-stiffened composite structure provided by the utility model, because the first rib and second rib are in its respective plane Inside all it is arranged side by side, the point not intersected, also just without the accumulation and bending of rib or fiber so in plate.Due to rib The accumulation and bending of bone or fiber be cause structure overall mechanical properties decline the main reason for, and structural strength and just The weakness of degree.Therefore the grid-stiffened composite structure provided by the utility model, in theory its inside configuration there is no intensity Having with the strength and stiffness of the weakness of rigidity, therefore total significantly strengthens.

Automobile batteries case provided by the utility model, it is made up of above-mentioned composite material grid plate.

Further, the composite material grid plate is rectangle, wherein the length on a most long side is less than or equal to 50cm。

Because grid-stiffened composite structure and composite material grid plate have above-mentioned technique effect, there are composite lattice The automobile batteries case of grid structure should also have corresponding technique effect.

Based on this, the utility model is than original technology, the advantages of not only inheriting Advanced Composite Grid, and And in the structure using the amount of deflection of structure or fundamental frequency as control condition, and using complete buckling as the stabilization in the structure of control condition Sex expression is all fine, and strength and stiffness are also higher.In addition, the grid-stiffened composite structure provided by the utility model is easier In shaping, the internal structure of composite will not be caused have intersection, have accumulation；Will not waste of materials, it is easier to plastotype, and Firmness, durability can be improved.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of structural representation for the grid-stiffened composite structure that the utility model embodiment provides；

Fig. 2 is Fig. 1 front views；

Fig. 3 is Fig. 1 left view；

Fig. 4 is the structure chart of Z-shaped first rib or second rib；

Fig. 5 is the structure chart of the rib of C-shaped first or second rib；

Fig. 6 is a kind of structural representation for the grid-stiffened composite structure that the utility model embodiment provides.

Mark：1- intermediate plates；The grid layers of 2- first；The grid layers of 3- second；The ribs of 4- first；5- second ribs； 6- upper plates；7- risers；8- lower plates.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

, it is necessary to explanation in description of the present utility model, such as occur term " " center ", " on ", " under ", " left side ", " right side ", " vertical ", " level ", " interior ", " outer " etc., orientation or position relationship indicated by it be based on orientation shown in the drawings or Position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified device or member Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model. In addition, such as there is term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or implying relative Importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term such as occurs in description of the present utility model " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition State concrete meaning of the term in the utility model.

Embodiment one

Core of the present utility model is to provide a kind of grid-stiffened composite structure, alleviates composite of the prior art Cell structure when for using complete buckling as in the structure of control condition, ask by the technology that the bulk strength of structure is relatively low Topic.

As shown in figs 1 to 6, a kind of grid-stiffened composite structure, the composite lattice are provided in the present embodiment Grid structure includes intermediate plate 1, affixed first grid layer 2 in side of the intermediate plate 1, affixed second grid layer 3 of opposite side；It is described Include multiple the first ribs 4 being arranged side by side in first grid layer 2, multiple be arranged side by side is included in second grid layer 3 Second rib 5, first rib 4 and the second rib 5 are strip, first rib 4 and the second rib 5 Arranged in space in angle.

The grid-stiffened composite structure provided by the utility model, including at least three-decker：Intermediate plate 1, and respectively The first grid layer 2 and the second grid layer 3 positioned at the both sides of intermediate plate 1.Wherein, multiple be arranged side by side is included in the first grid layer 2 The first rib 4, include multiple second ribs 5 being arranged side by side in the second grid layer 3, the first rib 4 and second rib 5 are in sky Between in angle arrange.I.e. in each grid layer, its rib is all arranged side by side, and does not have the point intersected between rib two-by-two. From the point of view of in space, the first rib 4 and second rib 5 are in an angle.

The grid-stiffened composite structure provided by the utility model, when using complete buckling as control condition, intensity is more It is high.The grid-stiffened composite structure provided by the utility model, because the first rib 4 and second rib 5 are respective flat at its All it is arranged side by side in face, the point not intersected, also just without the accumulation and bending of rib or fiber so in plate.Due to The accumulation and bending of rib or fiber be cause structure overall mechanical properties decline the main reason for, and structural strength and The weakness of rigidity.Therefore the grid-stiffened composite structure provided by the utility model, its inside configuration is not strong in theory The weakness of degree and rigidity, therefore the strength and stiffness of total have and significantly strengthened.

The utility model is than original technology, the advantages of not only inheriting Advanced Composite Grid, and with The amount of deflection or fundamental frequency of structure are the structure of control condition, and using complete buckling as the stable sex expression in the structure of control condition All very well, strength and stiffness are also higher.In addition, the grid-stiffened composite structure provided by the utility model more easily into Type, will not cause the internal structure of composite to have intersection, have accumulation；Will not waste of materials, it is easier to plastotype, and can carry High firmness, durability.

Wherein, the structure type of the first rib 4 and/or second rib 5 can have a variety of, and one of its criteria for classification is section Shape, for example, section can be triangle, rectangle, ellipse or circle.

Preferably, such as Fig. 4-Fig. 5, in the alternative of the present embodiment, first rib 4 and/or second rib Bone 5 includes upper plate 6, riser 7 and lower plate 8, and the long side of the upper plate 6 and the long side of the lower plate 8 are connected to described In two long sides of riser 7；A plate face and the intermediate plate 1 for the upper plate 6 is affixed.

First rib 4 and/or second rib 5 include upper plate 6, riser 7 and lower plate 8, a plate face of upper plate 6 and in Between plate 1 it is affixed.In the structure including upper plate 6, riser 7 and lower plate 8, the junction of riser 7 and upper plate 6 and lower plate 8 can be The edge of upper plate 6 and lower plate 8, can also be inside upper plate 6 and lower plate 8.Wherein, the long side of the long side of upper plate 6 and lower plate 8 is distinguished It is connected in two long sides of riser 7, i.e. the junction of riser 7 and upper plate 6 and lower plate 8 is in upper plate 6 and the edge of lower plate 8.

When the junction of riser 7 and upper plate 6 and lower plate 8 is in upper plate 6 and the edge of lower plate 8, further, the upper plate 6 long side and the lower plate 8 are arranged in the both sides of the plate face of the riser 7.That is, the first rib 4 and/or second rib 5 Section to be Z-shaped, as shown in Figure 4.

Or the long side and the lower plate 8 of the upper plate 6 are arranged in the same side of the plate face of the riser 7.That is, The section of one rib 4 and/or second rib 5 is C-shaped, as shown in Figure 5.

Wherein, upper plate 6, riser 7 and lower plate 8 are included when the first rib 4 and/or second rib 5, one of upper plate 6 When plate face and affixed intermediate plate 1, upper plate 6 can be parallel to each other with lower plate 8 or close to parallel, riser 7 can with upper plate 6 and under Plate 8 is vertical or close to vertically.Certainly, upper plate 6 and lower plate 8 can also be arranged at an angle, and both are connected with riser 7.

In the alternative of the present embodiment, the angle of the first rib 4 and the second rib 5 in space is 90 °, One kind in 60 °, 30 ° and 45 °.

From the above mentioned, the grid-stiffened composite structure provided by the utility model, including at least three-decker：Intermediate plate 1, and it is located at the first grid layer 2 and the second grid layer 3 of the both sides of intermediate plate 1 respectively.Wherein, include in the first grid layer 2 multiple The first rib 4 being arranged side by side, include multiple second ribs 5 being arranged side by side, the first rib 4 and second in the second grid layer 3 Rib 5 is arranged in angle in space.I.e. in each grid layer, its rib is all arranged side by side, and does not have two-by-two between rib The point of intersection.From the point of view of in space, the first rib 4 and second rib 5 are in an angle.This angle can be any as needed Choose, as long as more than 0 °, preferably 60 °, 30 °, 45 ° or 90 °, Fig. 1-Fig. 6 show the composite wood that angle is 90 ° Expect cell structure.

The section of first rib 4 and second rib 5 can with all C-shapeds, it is Z-shaped or other, can also be respectively different.The The arrangement spacing of the first rib 4 in one grid layer 2 and the second rib 5 in the second grid layer 3 can be the same or different, It is arranged as required to.

The utility model embodiment additionally provides a kind of composite material grid plate, it is characterised in that the composite lattice Screen is obtained by grid-stiffened composite structure as described above through composite panel moulding process.Fig. 1-Fig. 3 shows first The Z-shaped composite material grid plate in the section of rib 4 and/or second rib 5.Fig. 6 shows the first rib 4 and/or second rib 5 Section C-shaped composite material grid plate.

Certainly, obtained by grid-stiffened composite structure as described above through composite panel moulding process not only have plate, Can also be pillar buoy and conically shaped, or the structure of other shapes, in the protection domain of the application.

On the basis of above-described embodiment, further, side of first grid away from the intermediate plate 1 and/or Side of second grid away from the intermediate plate 1 is provided with covering.

From the above mentioned, grid-stiffened composite structure comprises at least intermediate plate 1, and is located at the first of the both sides of intermediate plate 1 respectively The grid layer 3 of grid layer 2 and second.Wherein, multiple the first ribs 4 being arranged side by side, the second grid layer are included in the first grid layer 2 Include multiple second ribs 5 being arranged side by side in 3, the first rib 4 and second rib 5 are arranged in angle in space.First rib Bone 4 and second rib 5 can continuously arrange on the first grid layer 2 and the second grid layer 3, it is possibility to have gap.If to multiple The smoothness of the outer surface of condensation material flase floor has higher requirement, can set covering in the outside of grid-stiffened composite structure (also referred to as cover plate or plate).

From the above mentioned, multiple first rib 4 and/or second rib 5 include upper plate 6, riser 7 and lower plate 8, upper plate 6 One plate face and intermediate plate 1 are affixed.Wherein, a plate face of upper plate 6 and intermediate plate 1 are affixed.When setting covering, covering can be with It is affixed with lower plate 8.

Wherein, composite panel moulding process has multiple choices, for example, using hybrid technique method, i.e., first according to rib Shape, functional requirement manufacture specific bed die, and in preset expansion block in bed die groove, rib prepreg is through winding or laying Deng being solidified after forming frock, expand the expansion block in groove using heat when solidifying, from lateral compression rib prepreg, So as to ensure the product quality of cell structure.

Composite panel moulding process can also use integration technology of preparing, for example, the composite sheet metal forming work Skill is co-curing.

Co-curing technology, i.e., two or more preformed member experience one-time process specification curing moldings are one whole The process of body component.Compared with above-mentioned technique, co-curing reaction only needs a cure cycle, so as to shorten production week Phase, and structural integrity prepared by co-curing reaction is preferable, reduces the coordination requirement each assembling assembly.

Embodiment two

The present embodiment provide the automobile batteries case, be to embodiment one provide the grid-stiffened composite structure and The further improvement of composite material grid plate, the technical scheme described by embodiment one fall within the embodiment, and embodiment one is Technical scheme through description is not repeated to describe.

Specifically, a kind of automobile batteries case is provided in the present embodiment, as answering any one of embodiment one Condensation material flase floor is made.

Automobile batteries case, or electric automobile battery box, the form of its external applied load are mainly the surrounding of battery case by flat The pressure in andante face.That is, the main reason for it is tired or destroys is bending deformation, is the knot using complete buckling as control condition Structure body.Therefore, especially the composite material grid any one of embodiment one is used in electric automobile field, its battery case Plate, not only intensity is high, and can further mitigate the weight of vehicle.Certainly, the composite wood any one of embodiment one Material flase floor can also make other small aircrafts, and the loading of these aircraft is also the situation for needing surrounding to pressurize.

On the basis of above-described embodiment, further, the composite material grid plate is rectangle, wherein most long one The length on side is less than or equal to 50cm.

Preferably, the length of side of the composite material grid plate is 30cm-50cm.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

1. A kind of 1. grid-stiffened composite structure, it is characterised in that including intermediate plate, affixed first grid in side of the intermediate plate Layer, affixed second grid layer of opposite side；Include multiple the first ribs being arranged side by side, second lattice in first grid layer Including multiple second ribs being arranged side by side in gate layer, first rib and the second rib are strip, and described the One rib and the second rib are arranged in angle in space.
2. 2. grid-stiffened composite structure according to claim 1, it is characterised in that first rib and/or described Two ribs include upper plate, riser and lower plate, and the long side of the long side of the upper plate and the lower plate is connected to described vertical In two long sides of plate；One plate face of the upper plate and the intermediate plate are affixed.
3. 3. grid-stiffened composite structure according to claim 2, it is characterised in that the long side of the upper plate and the lower plate It is arranged in the both sides of the plate face of the riser.
4. 4. grid-stiffened composite structure according to claim 2, it is characterised in that the long side of the upper plate and the lower plate It is arranged in the same side of the plate face of the riser.
5. 5. grid-stiffened composite structure according to claim 1, it is characterised in that first rib and second rib The angle of bone in space is one kind in 90 °, 60 °, 30 ° and 45 °.
6. 6. a kind of composite material grid plate, it is characterised in that the composite material grid plate is by such as any one of claim 1-5 Described grid-stiffened composite structure obtains through composite panel moulding process.
7. 7. composite material grid plate according to claim 6, it is characterised in that first grid is away from the intermediate plate Side and/or the side of second grid away from the intermediate plate be provided with covering.
8. 8. composite material grid plate according to claim 7, it is characterised in that the composite panel moulding process is common Solidification.
9. 9. a kind of automobile batteries case, it is characterised in that as the composite material grid plate system as described in claim any one of 6-8 Into.
10. 10. automobile batteries case according to claim 9, it is characterised in that the composite material grid plate is rectangle, wherein The length on a most long side is less than or equal to 50cm.