CN115366498B - High-strength structure capacitor, preparation method, new energy automobile and unmanned aerial vehicle - Google Patents
High-strength structure capacitor, preparation method, new energy automobile and unmanned aerial vehicle Download PDFInfo
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- CN115366498B CN115366498B CN202210982475.XA CN202210982475A CN115366498B CN 115366498 B CN115366498 B CN 115366498B CN 202210982475 A CN202210982475 A CN 202210982475A CN 115366498 B CN115366498 B CN 115366498B
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- 238000002360 preparation method Methods 0.000 title abstract description 7
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- UBPAGXJLXOVOJJ-UHFFFAOYSA-L C(C)O.O.O.O.O.O.O.[Ni](Cl)Cl Chemical compound C(C)O.O.O.O.O.O.O.[Ni](Cl)Cl UBPAGXJLXOVOJJ-UHFFFAOYSA-L 0.000 description 2
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- LAIZPRYFQUWUBN-UHFFFAOYSA-L nickel chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Ni+2] LAIZPRYFQUWUBN-UHFFFAOYSA-L 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
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- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/275—Carbon fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
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- H01G4/008—Selection of materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
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- B32B2038/0052—Other operations not otherwise provided for
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- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- B32B2457/00—Electrical equipment
- B32B2457/16—Capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
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- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention provides a high-strength structural capacitor, a preparation method, a new energy automobile and an unmanned aerial vehicle, which comprise the following steps: positive carbon fiber, fiber isolation film, negative carbon fiber and structural resin; the positive carbon fiber and the negative carbon fiber are respectively paved on two sides of the fiber isolation film; the positive carbon fiber, the fiber isolation film and the negative carbon fiber infiltrate an ionic solution or a solid electrolyte polymer, and the structural resin is solidified by the positive carbon fiber, the fiber isolation film and the negative carbon fiber. The invention can realize the energy storage and release of high power density while realizing the optimal mechanical load service performance, fully utilizes the intrinsic characteristics of the material to fundamentally realize the weight reduction reinforcement, and solves the problems that the weight reduction and the thermal management requirements are not satisfied due to the fact that the capacitor element is directly solidified into the carbon fiber composite material.
Description
Technical Field
The invention relates to the technical field of manufacturing of multifunctional composite material capacitors, in particular to a high-strength structure capacitor, a manufacturing method, a new energy automobile and an unmanned aerial vehicle.
Background
Along with the promotion of the national double-carbon strategy, various industries have raised higher requirements on light weight and high performance, and especially in the traffic and transportation fields of new energy automobiles, unmanned aerial vehicles and the like. Taking an electric automobile as an example, the current mainstream overall weight reduction method can be summarized into two main directions of optimizing a vehicle body material structure and improving the capacity and the power density of energy storage equipment, and the main directions are that the vehicle body structure design is continuously reduced in materials and enhanced, so that the specific strength is improved; the design of the energy storage equipment is continuously increased and compressed, the capacity and the power are improved, the two industries are mutually independent, each of the two industries is in war, the upper limit of the respective performance improvement is reached at present, and therefore the mileage is difficult to become a big bottleneck of the new energy automobile. How to further improve the two materials has important significance on the weight-reducing and lifting performance of the whole structure.
The functional and structural composite is a key for solving the problem, and the multifunctional composite material is used as an advanced material, and is widely applied to various industries at present, and most common materials comprise a light high-strength carbon fiber resin composite material, a high-temperature-resistant wave-transparent ceramic composite material and the like. Thanks to its compoundability, it has various properties. The capacitor with the carbon fiber reinforced resin structure is used as a composite structure of an energy storage material and high-performance reinforced plastic, and can store electric energy and meet the mechanical service performances such as static bearing, dynamic collision and the like of the structure, so that the capacitor is a typical material-structure-function integrated component. The structural capacitor member actively eliminates the boundary between the energy storage device and the actual structure so that all load-bearing structural members can serve as energy storage elements and provide energy sources, thereby fundamentally improving the material and space utilization. More importantly, the structural capacitor avoids the defect of the improvement thought of the conventional energy storage device, namely the problems of mechanical abuse and thermal runaway caused by concentrated capacity of the energy storage element, and the structural capacitor greatly improves the heat dissipation area by uniformly dispersing the power supply capacity to the whole bearing structure, and reduces the risk of failure and even explosion of the highly integrated energy storage bag caused by impact. However, the existing capacitor with a structure still is in a simple bonding stage, and the existing capacitor element is solidified into the carbon fiber composite material by utilizing excellent compatibility of the carbon fiber reinforced resin, so that the carbon fiber reinforced resin provides structural strength and rigidity, the capacitor provides energy storage, the capacitor essentially still belongs to an assembly structure, and the weight reduction and thermal management requirements are not met. Therefore, how to fully utilize the material properties to realize the intrinsic mechanical-energy storage composite integrated performance of the material by optimizing the material combination mode is a problem to be solved urgently, and a more advanced and efficient high-performance structural capacitor design and manufacturing method still needs to be proposed in the field.
Patent document CN113619232a discloses a structural-functional integrated super-electric composite material and a preparation method thereof, which is formed by embedding and compounding a fiber reinforced resin matrix composite layer and a super-electric functional core laminated layer; the mass fraction of the fiber reinforced resin matrix composite layer in the super-electric composite material is 85-95%, and the mass fraction of the super-electric functional core layer is 5-15%; the density of the super-electric composite material is 1.6-3.0 g/cm < 3 >. The patent is to directly solidify the capacitor element into the carbon fiber composite material, so as to realize that the carbon fiber reinforced resin provides structural strength and rigidity.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-strength structural capacitor, a preparation method, a new energy automobile and an unmanned aerial vehicle.
According to the present invention, there is provided a high-strength structural capacitor comprising: positive carbon fiber, fiber isolation film, negative carbon fiber and structural resin;
The positive carbon fiber and the negative carbon fiber are respectively paved on two sides of the fiber isolation film;
The positive carbon fiber, the fiber isolation film and the negative carbon fiber infiltrate an ionic solution or a solid electrolyte polymer, and the structural resin is solidified by the positive carbon fiber, the fiber isolation film and the negative carbon fiber.
Preferably, a method for preparing the high-strength structural capacitor comprises the following steps:
step S1, weaving and laying the positive carbon fiber and the negative carbon fiber;
step S2: laying each layer according to the sequence of the positive carbon fiber, the fiber isolating film and the negative carbon fiber;
step S3: immersing the whole in the step S2 in an ionic solution or a solid electrolyte polymer under a protective atmosphere;
step S4: vacuum pouring the structural resin into the whole in the step S3 and curing;
step S5: and (5) performing mechanical and electrical performance test verification to finish performance experiment verification.
Preferably, in step S1, the positive carbon fiber and the negative carbon fiber may be woven as a unidirectional fabric, a plain weave fabric, a twill weave fabric, a satin weave fabric, or a three-dimensional woven fabric.
Preferably, the positive electrode carbon fiber and the negative electrode carbon fiber obtain higher specific surface area through surface modification, or a grafting pseudo-capacitance material is deposited on the surface, so that the energy density of the structural capacitor is improved;
The modification method of the positive electrode carbon fiber and the negative electrode carbon fiber comprises in-situ growth, direct coating, chemical grafting, electrophoretic deposition and carbonization.
Preferably, the fiber isolating membrane material is an insulating fiber such as glass fiber, silicon boron nitrogen fiber, basalt fiber, alumina fiber, boron fiber, natural ramie fiber or bamboo fiber.
Preferably, the fibrous insulation film is modified by the directional growth of insulated nanotubes in an array.
Preferably, the structural resin is epoxy resin, bismaleimide resin, polyimide resin, polyether ether ketone resin or phenolic resin.
Preferably, in step S4, the ionic solution or solid electrolyte polymer is multiphase mixed with the structural resin.
Preferably, the high-strength structure capacitor can be used in the fields of transportation such as new energy automobiles, unmanned aerial vehicles and the like.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the energy storage and release of high power density can be realized while the optimal mechanical load service performance is realized, the intrinsic characteristics of the material are fully utilized to fundamentally realize weight reduction reinforcement, and the problems that the weight reduction and thermal management requirements are not satisfied due to the fact that the capacitor element is directly solidified into the carbon fiber composite material are solved;
2. according to the integrated compression type energy storage bag, the energy is uniformly dispersed on the structure, and the heat dissipation area is sufficient, so that the heat management requirement is greatly reduced, and the overheat and mechanical abuse risks easily generated by the traditional integrated compression type energy storage bag are avoided;
3. According to the invention, as the matrix is fully soaked and wrapped by the structural resin, the internal ion liquid channels are continuous but independent, so that the leakage risk of the traditional capacitor is avoided, and the safety is better;
4. The invention is based on basic materials such as resin, electrolyte, carbon fiber, glass fiber, etc., belonging to multifunctional light composite materials;
5. The invention belongs to composite materials, has better compatibility, and can be used for carrying out targeted modification on fiber or resin relatively easily, for example, aluminum hydroxide is added into resin to obtain flame retardant function.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a high strength structural capacitor;
FIG. 2 is a hybrid structural resin with bicontinuous phase characteristics;
the figure shows:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1
As shown in fig. 1 and 2, the present embodiment is a structure and preparation of a high-strength structure capacitor, including: positive carbon fiber 1, fiber isolation film 2, negative carbon fiber 3 and structural resin 4; the positive carbon fiber 1 and the negative carbon fiber 3 are respectively paved on two sides of the fiber isolation film 2, and the positive carbon fiber 1, the fiber isolation film 2 and the negative carbon fiber 3 infiltrate an ionic solution or a solid electrolyte polymer 21, and the structural resin 4 is solidified on the positive carbon fiber 1, the fiber isolation film 2 and the negative carbon fiber 3.
The preparation method of the embodiment comprises the following steps:
Step S1, weaving and laying positive carbon fibers 1 and negative carbon fibers 3, wherein the positive carbon fibers 1 and the negative carbon fibers 3 can be woven into unidirectional fabrics, plain fabrics, twill fabrics, satin fabrics or three-dimensional woven fabrics; according to the bearing design requirement of the capacitor, the laying angle and the braiding form of the anode carbon fiber 1 and the cathode carbon fiber 3 can be adjusted so as to realize optimal load service performance.
Step S2: the layers are laid in the order of the positive carbon fiber 1, the fiber separator 2, and the negative carbon fiber 3.
Step S3: the whole in step S2 is immersed in an ion solution or a solid electrolyte polymer 21 under a protective atmosphere, and the ion solution or the solid electrolyte polymer 21 is any one of the ion solution and the solid electrolyte polymer.
Step S4: the whole in the step S3 is vacuum poured and solidified with the structural resin 4, the ionic solution or solid electrolyte polymer 21 and the structural resin 4 are mixed in a multiphase manner, and the ionic solution or solid electrolyte polymer and the structural resin are mutually insoluble and have clear boundaries; the composition can be designed to obtain a mixed solid electrolyte composite material with high mechanical properties and high ionic conductivity.
Step S5: and (5) performing mechanical and electrical performance test verification to finish performance experiment verification.
The positive electrode carbon fiber 1 and the negative electrode carbon fiber 3 obtain higher specific surface area through surface modification, and the modification method of the positive electrode carbon fiber 1 and the negative electrode carbon fiber 3 comprises in-situ growth, direct coating, chemical grafting, electrophoretic deposition and carbonization. The fiber isolation membrane 2 is modified by array oriented growth of insulated nanotubes, which include silicon nanotubes and cellulose nanotubes, so that ionic solutions or ionic polymers can be rapidly transported under capillary pressure.
In some embodiments, the carbon nanotubes are grown on the surfaces of the positive electrode carbon fiber 1 and the negative electrode carbon fiber 3 in an oriented or non-oriented in-situ manner, so that the modified positive electrode carbon fiber 1 and the modified negative electrode carbon fiber 3 obtain a higher specific surface area, are more fully contacted with an ionic solution, and can further improve the electrical property and the interlayer mechanical property of the capacitor by utilizing the high conductivity and high strength characteristics of the carbon nanomaterial.
In other embodiments, the modification of the positive carbon fiber 1 and the negative carbon fiber 3 is to increase the energy density of the capacitor by depositing pseudocapacitance materials such as grafted MnO 2、Fe2O3、Ti3C2 on the surface.
The material of the fiber isolating film 2 is glass fiber, silicon boron nitrogen fiber, basalt fiber, alumina fiber, boron fiber, natural ramie fiber or bamboo fiber and other insulating fiber. The structural resin 4 is made of epoxy resin, bismaleimide resin, polyimide resin, polyether-ether-ketone resin or phenolic resin.
Example 2
Example 2 is a preferred example of example 1.
As shown in fig. 1, this embodiment includes positive and negative carbon fibers 1 and 3 of in-situ grown carbon nanotubes, a glass fiber separator 2, and a structural resin 4 containing an electrolyte.
The method comprises the following specific steps:
And T1, weighing a certain amount of nickel chloride hexahydrate, uniformly stirring to dissolve the nickel chloride hexahydrate in ethanol, and preparing a 1M nickel chloride hexahydrate ethanol solution.
And T2, uniformly soaking the T300 carbon fiber plain weave fabric subjected to calcination and desizing at 500 ℃ under the protection of argon into a nickel chloride hexahydrate ethanol solution for one minute, taking out the plain weave fabric, and putting the plain weave fabric into an oven to bake for one minute at 90 ℃ to obtain the carbon fiber fabric uniformly attached with nickel chloride particles.
And T3, igniting an alcohol lamp filled with 99.9% pure ethanol under standard atmospheric conditions without protective atmosphere, and uniformly burning the carbon fiber fabric for 3s at each position to obtain the T300 carbon fiber plain weave fabric (anode carbon fiber 1 and cathode carbon fiber 3) with carbon nanotubes grown in situ.
And T4, sequentially laying carbon fiber braided wires on a flat plate die wrapped by an isolating film to serve as an anode current collector, wherein carbon fiber fabrics (0 degree/90 degrees) in one part of T3 serve as an anode (anode carbon fiber 1), glass fiber plain fabrics (0 degree/90 degrees) serve as a glass fiber isolating film 2, carbon fiber fabrics (0 degree/90 degrees) in the other part of T3 serve as a cathode (cathode carbon fiber 3), and laying the carbon fiber braided wires again to serve as a cathode current collector, tetrafluoro cloth, a current guiding net and a current guiding pipe, and adhering and fixing by using pressure sensitive adhesives.
And T5, sealing with the putty strips by using a vacuum bag, vacuumizing, introducing argon, repeating the steps for three times, avoiding incomplete vacuum, residual trace air, and finally keeping a vacuum state.
And T6, sucking 1M LiTFSi electrolyte (PC/EC (1:1) w/w) into the vacuum bag by utilizing negative pressure in the vacuum bag in the glove box under the argon atmosphere, fully soaking the carbon fiber, the glass fiber and the carbon fiber laminated fabric, and removing the vacuum sealing bag out of the glove box.
And T7, preparing normal-temperature cured resin, uniformly defoaming, performing vacuum infusion liquid forming, pumping the resin into a vacuum sealing bag from one end by using an air pump, fully infusing the resin into the laminated fabric, standing for 6h, curing the resin, opening a sealed package, and demolding to obtain the capacitor.
And T8, performing electrical property test and mechanical property test on the capacitor obtained in the step T7, and completing performance verification.
The obtained capacitor has the tensile modulus of 24.50GPa, the tensile strength of 302.07MPa, the shear modulus of 1.21GPa, the shear strength of 30.28MPa and the capacitance of 5.89mF/g, and simultaneously has higher mechanical property and electrical property. The carbon fiber reinforcement has the electrode function while bearing, and the epoxy resin containing the electrolyte has the ion transmission capability while fixing the fibers, so that the reinforcement is realized without additionally adding a single-function supporting material.
The capacitor of the embodiment 1 and the embodiment 2 can be used in the fields of transportation such as new energy automobiles, unmanned aerial vehicles and the like.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (8)
1. A high strength structural capacitor, comprising: a positive carbon fiber (1), a fiber isolation film (2), a negative carbon fiber (3) and a structural resin (4);
the positive carbon fiber (1) and the negative carbon fiber (3) are respectively paved on two sides of the fiber isolation film (2);
The positive carbon fiber (1), the fiber isolation film (2) and the negative carbon fiber (3) are soaked in an ion solution or a solid electrolyte polymer (21), and the structural resin (4) is solidified by the positive carbon fiber (1), the fiber isolation film (2) and the negative carbon fiber (3);
The fiber isolating membrane (2) is modified by directionally growing insulating nanotubes in an array, so that ionic solution or ionic polymer is rapidly transported under the action of capillary pressure;
The structural resin (4) is made of epoxy resin, and the epoxy resin containing the electrolyte has ion transmission capacity while fixing the fibers.
2. A method of making a high strength structural capacitor according to claim 1, comprising the steps of:
step S1, weaving and laying the positive carbon fiber (1) and the negative carbon fiber (3);
Step S2: laying each layer according to the sequence of the positive carbon fiber (1), the fiber isolating film (2) and the negative carbon fiber (3);
Step S3: immersing the whole in the step S2 in an ionic solution or a solid electrolyte polymer (21) under a protective atmosphere;
step S4: vacuum pouring the structural resin (4) into the whole in the step S3 and curing;
step S5: and (5) performing mechanical and electrical performance test verification to finish performance experiment verification.
3. The method for manufacturing a high-strength structural capacitor according to claim 2, wherein: in step S1, the positive carbon fiber (1) and the negative carbon fiber (3) may be woven as a unidirectional fabric, a plain fabric, a twill fabric, a satin fabric, or a three-dimensional woven fabric.
4. The method for manufacturing a high-strength structural capacitor according to claim 2, wherein: the positive carbon fiber (1) and the negative carbon fiber (3) are subjected to surface modification to obtain higher specific surface area, or the energy density is improved by depositing a grafting pseudo-capacitance material on the surfaces of the positive carbon fiber (1) and the negative carbon fiber (3);
the modification method of the positive electrode carbon fiber (1) and the negative electrode carbon fiber (3) comprises in-situ growth, direct coating, chemical grafting, electrophoretic deposition and carbonization.
5. The method for manufacturing a high-strength structural capacitor according to claim 2, wherein: the fiber isolating film (2) is made of glass fiber, silicon boron nitrogen fiber, basalt fiber, alumina fiber, boron fiber, natural ramie fiber or bamboo fiber insulating fiber.
6. The method for manufacturing a high-strength structural capacitor according to claim 2, wherein: in step S4, the ionic solution or solid electrolyte polymer (21) is multiphase mixed with the structural resin (4).
7. The utility model provides a new energy automobile which characterized in that: a high strength structural capacitor as in claim 1.
8. An unmanned aerial vehicle, its characterized in that: a high strength structural capacitor as in claim 1.
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| CN101606212A (en) * | 2006-04-21 | 2009-12-16 | 帝国创新有限公司 | Energy storage device |
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| CN103337379B (en) * | 2013-06-07 | 2016-08-31 | 江苏大学 | A kind of multifunction energy storage device collecting energy storage-structure-integrated and preparation method thereof |
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