CN220341372U - Storage battery box and motor vehicle with same - Google Patents
Storage battery box and motor vehicle with same Download PDFInfo
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- CN220341372U CN220341372U CN202321038470.8U CN202321038470U CN220341372U CN 220341372 U CN220341372 U CN 220341372U CN 202321038470 U CN202321038470 U CN 202321038470U CN 220341372 U CN220341372 U CN 220341372U
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- 239000000835 fiber Substances 0.000 claims abstract description 141
- 239000004744 fabric Substances 0.000 claims abstract description 137
- 239000002356 single layer Substances 0.000 claims abstract description 112
- 239000010410 layer Substances 0.000 claims abstract description 89
- 239000011347 resin Substances 0.000 claims abstract description 71
- 229920005989 resin Polymers 0.000 claims abstract description 71
- 238000002844 melting Methods 0.000 claims abstract description 63
- 230000008018 melting Effects 0.000 claims abstract description 61
- 239000003063 flame retardant Substances 0.000 claims abstract description 45
- 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 compound 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 claims abstract description 43
- 238000013329 compounding Methods 0.000 claims abstract description 37
- 238000007731 hot pressing Methods 0.000 claims abstract description 23
- 238000003475 lamination Methods 0.000 claims abstract description 9
- 238000009941 weaving Methods 0.000 abstract description 18
- 239000000945 filler Substances 0.000 abstract description 11
- 239000011159 matrix material Substances 0.000 abstract description 10
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 31
- 239000004917 carbon fiber Substances 0.000 description 31
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 27
- 239000003365 glass fiber Substances 0.000 description 20
- 229920006231 aramid fiber Polymers 0.000 description 19
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- 239000002131 composite material Substances 0.000 description 14
- 238000004064 recycling Methods 0.000 description 14
- 238000000465 moulding Methods 0.000 description 13
- 229920003366 poly(p-phenylene terephthalamide) Polymers 0.000 description 7
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 239000004246 zinc acetate Substances 0.000 description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 239000004760 aramid Substances 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- Y02E60/10—Energy storage using batteries
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- Laminated Bodies (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The utility model relates to a storage battery box and a motor vehicle with the storage battery box, which comprises an inner hybrid fiber strength layer, a middle hybrid fiber rigidity layer and an outer hybrid fiber flame-retardant layer which are sequentially arranged from inside to outside; each layer of structure is a reinforced fiber preform structure and comprises a prepreg fabric single layer formed by compounding single-layer fiber fabrics with resin in a hot melting way, and a plurality of groups of prepreg fabric single layers are formed into a box structure in a hot pressing mode through a set lamination combination mode. The inner, middle and outer three-layer structures of the box body adopt different weaving arrangement modes to form a hybrid fiber laminated combination reinforcing structure, and the complete box body structure is formed, so that the box body has stable mechanical properties, a storage battery can be protected in a burst state, and meanwhile, flame retardant modified filler introduced into matrix resin is matched with an external flame retardant fiber hybrid structure, so that the fireproof characteristic of the storage battery box body is effectively improved.
Description
Technical Field
The utility model relates to the technical field of storage batteries, in particular to a storage battery box and a motor vehicle with the storage battery box.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The motor vehicle is provided with a battery box for accommodating a storage battery, and taking a battery system box body of a high-voltage electric vehicle as an example, the battery box needs to balance some complicated service technical requirements:
first, the first is a combination of a first and a second. The case must provide mechanical properties (torsion, bending stiffness, etc.) for stable service in order to be able to carry heavy batteries during stable battery life while protecting the batteries from corrosion, stone impact, dust and moisture intrusion, and electrolyte leakage. In certain situations, the battery case also needs to be able to prevent electrostatic discharge and electromagnetic/radio frequency interference from nearby systems.
Second, in the event of an impact, the case needs to protect the battery system from shattering and puncturing, or short-circuiting the battery pack due to the entry of moisture and humidity.
Third, the battery system of the electric vehicle must facilitate charge and discharge in various weather and maintain the respective battery packs within a desired thermal operating range during charge and discharge.
The storage battery box body in the prior art is difficult to adapt to the complex service environment requirements, most box body structures can only meet one requirement, and fireproof performance and recovery requirements are difficult to meet.
Disclosure of Invention
In order to solve the technical problems in the background art, the utility model provides the storage battery box and the motor vehicle with the storage battery box, wherein the inner, middle and outer three-layer structures of the storage battery box form a hybrid fiber laminated combination reinforcing structure in different weaving arrangement modes, so that the box body has stable mechanical properties, can resist torsion and bending stiffness, can protect the storage battery in a sudden state, and meanwhile, flame-retardant modified filler introduced into matrix resin is matched with an external flame-retardant fiber hybrid structure to effectively improve the fireproof characteristic of the storage battery box body.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a first aspect of the present utility model provides a battery case comprising an inner hybrid fiber strength layer, an intermediate hybrid fiber stiffness layer, and an outer hybrid fiber flame retardant layer arranged in that order from inside to outside;
each layer of structure is a reinforced fiber preform structure and comprises a prepreg fabric single layer formed by compounding single-layer fiber fabrics with resin in a hot melting way, and a plurality of groups of prepreg fabric single layers are formed into a box structure in a hot pressing mode through a set lamination combination mode.
In the internal hybrid fiber strength layer, a single-layer prefabricated body fabric formed by a single-layer fiber fabric and resin are subjected to hot melting and compounding to form a prepreg fabric single layer, and a plurality of groups of prepreg fabric single layers form a laminated fabric structure.
The single layers of the plurality of groups of prepreg fabrics adopt a unidirectional fiber arrangement mode, and the adjacent laminated layers adopt an orthogonal, oblique or quasi-isotropic laying mode to form a laminated fabric structure.
In the middle hybrid fiber stiffness layer, a single-layer prefabricated body fabric formed by a single-layer fiber fabric and resin are subjected to hot melting and compounding to form a single-layer prepreg fabric, and a plurality of groups of single-layer prepreg fabrics form a three-dimensional weaving structure.
The single-layer of the plurality of groups of prepreg fabrics adopts any one of three-dimensional four-way, three-dimensional five-way, three-dimensional six-way or three-dimensional seven-way fabric structure types to form a three-dimensional woven structure.
In the external hybrid fiber flame-retardant layer, a single-layer prefabricated body fabric formed by a single-layer fiber fabric and resin are subjected to hot melting and compounding to form a prepreg fabric single layer, and a plurality of groups of prepreg fabric single layers form a two-dimensional weaving structure.
The plurality of groups of prepreg fabric monolayers form a two-dimensional weave structure by any one of a plain weave, a twill weave, or a satin weave type of fabric structure.
A single-layer prefabricated body fabric of an external hybrid fiber flame-retardant layer takes fibers as a main body, and is hybrid with linear flame-retardant fibers.
Flame retardant filler with a set proportion range is added into the resin.
A second aspect of the utility model provides a motor vehicle having a battery disposed in the battery case described above.
Compared with the prior art, the above technical scheme has the following beneficial effects:
1. the inner, middle and outer three-layer structures of the box body adopt different weaving arrangement modes to form a hybrid fiber laminated combination reinforcing structure, and the complete box body structure is formed, so that the box body has stable mechanical properties, a storage battery can be protected in a burst state, and meanwhile, flame retardant modified filler introduced into matrix resin is matched with an external flame retardant fiber hybrid structure, so that the fireproof characteristic of the storage battery box body is effectively improved.
2. The middle hybrid fiber stiffness layer adopting the three-dimensional weaving structure and the inner hybrid fiber strength layer of the laminated fabric structure are beneficial to improving the torsion and bending stiffness of the box body, so that the battery pack can bear heavy batteries during stable endurance, and meanwhile, the batteries are protected from corrosion, stone impact, dust and moisture invasion and electrolyte leakage.
3. The adopted resin has the function of recycling and degrading, and the environmental protection recycling function characteristic of the storage battery box body is effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of a battery case in a top view according to one or more embodiments of the present utility model;
FIG. 2 is a schematic view of a battery case according to one or more embodiments of the present utility model;
in the figure: 1 an inner hybrid fiber strength layer, 2 an intermediate hybrid fiber stiffness layer, 3 an outer hybrid fiber flame retardant layer.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The embodiment below gives a battery box, and the inner, middle and outer three-layer structures adopt different weaving arrangement modes to form a hybrid fiber laminated composite reinforced structure, so that the box body has stable mechanical properties, can resist torsion and bending stiffness, can protect a battery in a sudden state, and meanwhile, flame-retardant modified filler introduced into matrix resin is matched with an external flame-retardant fiber hybrid structure to effectively improve the fireproof characteristic of the battery box body.
Example 1:
a battery case as shown in fig. 1-2 includes an inner hybrid fiber strength layer 1, an intermediate hybrid fiber stiffness layer 2, and an outer hybrid fiber flame retardant layer 3.
Each layer of structure is a reinforced fiber preform structure and comprises a prepreg fabric single layer formed by hot melting and compounding single-layer fiber fabrics and PET resin, and a plurality of groups of prepreg fabric single layers are formed into a three-layer box structure through lamination, combination and hot press molding.
The internal hybrid fiber strength layer 1 uses carbon fiber as a main body, and hybrid glass fiber and aramid fiber, wherein the proportion of the main body carbon fiber and the hybrid fiber is flexibly adjusted according to actual requirements.
The carbon fiber can be any one type of T300, T700, T800, T1000 and the like, and is not limited to the above type, the glass fiber can be high-strength S glass fiber, and the aramid fiber can be any one type of K29, K49, K129 and the like, and is not limited to the above type.
The single-layer prefabricated body fabric of the internal hybrid fiber strength layer 1 can adopt a unidirectional fiber arrangement mode, a plurality of groups of single-layer prefabricated body fabrics are overlapped, a laminated fabric structure is formed between adjacent laminated layers by adopting an orthogonal, oblique or quasi-isotropic laying mode, the formed laminated structure is similar to a maze, and the impact from all directions of the outside can be gradually eliminated, so that the impact resistance and the strength of the box body are increased.
In the internal hybrid fiber strength layer 1, a single-layer preform fabric forming a laminated fabric structure is thermally fused and compounded with PET resin to form a prepreg fabric single layer.
The prepreg fabric single layer of the internal hybrid fiber strength layer 1 adopts a PET resin hot melting composite processing mode, the processing temperature is controlled within the range of 180-230 ℃, the hot melting time is 10-30min, and the resin content of the final single-layer prepreg fabric is controlled within the range of 30-60 percent and can be flexibly adjusted.
The number of the prepreg fabric laminates of the internal hybrid fiber strength layer is flexibly adjusted according to design requirements, and the single-layer thickness is controlled within the range of 0.05-0.3 mm.
The middle hybrid fiber stiffness layer 2 in the reinforced preform structure of the storage battery box body uses carbon fiber as a main body, and hybrid glass fiber and aramid fiber, wherein the proportion of the main body carbon fiber to the hybrid fiber is flexibly adjusted according to design requirements, and the types of the main body fiber and the hybrid fiber are the same as the above.
The single-layer prefabricated body fabric of the middle hybrid fiber rigidity layer 2 can adopt a three-dimensional weaving arrangement mode, and can adopt any fabric structure type such as three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction, three-dimensional seven-direction and the like. The rigidity of the middle hybrid fiber rigidity layer 2 formed by the three-dimensional weaving arrangement mode can be increased, and compared with a layered structure, the rigidity of the middle hybrid fiber rigidity layer is stronger, so that the middle hybrid fiber rigidity layer is a main strength support of a storage battery box body.
In the middle hybrid fiber stiffness layer 2, a single-layer prefabricated body fabric which is three-dimensionally and three-dimensionally woven and arranged is formed and is subjected to hot melting and compounding with PET resin to form a prepreg fabric single layer.
The PET resin hot-melting composite processing mode is adopted for the single-layer prefabricated body fabric of the middle hybrid fiber rigidity layer, the processing temperature is controlled within the range of 180-230 ℃, the hot-melting time is 10-30min, and the resin content of the final prepreg fabric is controlled within the range of 30-60% and can be flexibly adjusted.
The number of the prepreg fabric laminates of the intermediate hybrid fiber stiffness layer is flexibly adjusted according to design requirements, and the single-layer thickness is controlled within the range of 0.05-0.3 mm.
The external hybrid fiber flame-retardant layer 3 in the reinforced preform structure of the storage battery box body uses carbon fiber as a main body, and the fiber is hybrid linear aromatic high-temperature-resistant flame-retardant fiber, wherein the proportion of the main body carbon fiber and the hybrid flame-retardant fiber is flexibly adjusted according to design requirements, the types of the main body fiber are the same as the above, and the hybrid flame-retardant fiber can be any one type of PPTA fiber, MPTA fiber, PPS fiber and the like.
The single-layer prefabricated body fabric of the external hybrid fiber flame-retardant layer can adopt a two-dimensional weaving arrangement mode, and can adopt any fabric structure type such as plain weave, twill weave, satin weave and the like. The flame-retardant layer formed by the two-dimensional weaving mode is selected, and the processability and the operability are considered on the basis of meeting the flame retardance.
In the external hybrid fiber flame-retardant layer 3, a single-layer prefabricated body fabric which is formed in two-dimensional weaving arrangement and PET resin are subjected to hot melting compounding to form a prepreg fabric single layer.
The single-layer prefabricated body fabric of the external hybrid fiber flame-retardant layer adopts a PET resin hot melting composite processing mode, the processing temperature is controlled within the range of 180-230 ℃, the hot melting time is 10-30min, and the resin content of the single-layer of the final prepreg fabric is controlled within the range of 30-60 percent.
The PET resin is added with 10-30% of fire retardant filler, and the fire retardant can be any one of brominated polystyrene, aluminum hydroxide, tributyl phosphate and the like.
The number of the prepreg fabric laminates of the external hybrid fiber flame-retardant layer is flexibly adjusted according to design requirements, and the single-layer thickness is controlled within the range of 0.2-1 mm.
After lamination and combination, the prepreg single layer of the storage battery box body is prepared by hot-pressing one-step molding, the hot-pressing temperature is controlled within the range of 180-230 ℃, the hot-pressing time is controlled within the range of 10-60min, and the pressure intensity of hot-pressing molding is controlled within the range of 1-10 MPa.
The PET resin-based hybrid fiber composite material box has the characteristic of recoverable degradation, and the depolymerization recovery mode is as follows: placing the crushed material of the PET resin matrix composite to be recycled, ethylene glycol and zinc acetate in a recycling container according to a certain proportion, controlling the temperature of the container to be 160-195 ℃, reacting for 20-50min under the condition that the zinc acetate is 0.5-2% of the PET mass, cooling to room temperature after the reaction is finished, separating the fiber preform from the depolymerized resin, fully washing, drying the depolymerized long fiber preform, and crushing for recycling.
The storage battery box is formed by single-layer one-step hot press molding of thermoplastic prepreg fabrics, and the molding and processing efficiency is effectively improved.
The inner, middle and outer three-layer structures adopt different weaving arrangement modes to form a hybrid fiber laminated combination reinforced structure, so that the box body has stable mechanical properties, can resist torsion and bending stiffness, and can protect the storage battery in a sudden state.
Meanwhile, the flame-retardant modified filler introduced into the matrix resin is matched with an external flame-retardant fiber hybrid structure, so that the fireproof characteristic of the storage battery box body is effectively improved.
The PET resin has the function of recycling and degrading, and the environmental protection recycling function characteristic of the storage battery box body is effectively improved.
Example 2:
the internal hybrid fiber strength layer adopts T300 high-strength carbon fiber, high-strength S glass fiber and K49 aramid fiber to be mixed according to the proportion of 3:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a unidirectional fiber arrangement mode, and a quasi-isotropic laying mode is adopted between adjacent laminated layers to form a laminated fabric structure. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 3:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.4mm. The processing temperature of the hot melting compounding is 200 ℃, the hot melting time is 20min, and the resin content of the final prepreg fabric monolayer is 40%.
The middle hybrid fiber rigidity layer is woven by adopting T300 high-strength carbon fibers, high-strength S glass fibers and K49 aramid fibers in a hybrid ratio of 4:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a three-dimensional four-way three-dimensional braiding structure, and a laminated fabric structure is formed between adjacent laminated layers in a quasi-isotropic laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 4:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.5mm. The processing temperature of the hot melting compounding is 210 ℃, the hot melting time is 25min, and the resin content of the final prepreg fabric monolayer is 40%.
The external hybrid fiber flame-retardant layer adopts T700 high-strength carbon fiber and PPTA flame-retardant fiber to be mixed according to the proportion of 2:1, and the two fibers are respectively subjected to hot melting and compounding in PET resin to form a prepreg fabric single layer, wherein 20% of aluminum hydroxide flame retardant filler is added in the PET resin, the single layer preform fabric adopts a plain two-dimensional weaving arrangement mode, and a quasi-isotropic laying mode is adopted between adjacent laminates to form a laminated fabric structure. The ratio of the number of layers of the prepreg fabric of the carbon fiber to the PPTA fiber is 2:1, the single-layer thickness is 0.5mm, and the total thickness after hot melting and compounding is 1.3mm. The processing temperature of the hot melting compounding is 200 ℃, the hot melting time is 20min, and the resin content of the final prepreg fabric monolayer is 45%.
After lamination and combination, the prepreg single layer of the storage battery box body is prepared by hot-pressing one-step molding, wherein the hot-pressing temperature is 220 ℃, the hot-pressing time is 50min, and the pressure intensity of hot-pressing molding is 5MPa.
The PET resin-based hybrid fiber composite material box depolymerization recovery mode is as follows: placing the crushed material of the PET resin matrix composite part to be recycled, ethylene glycol and zinc acetate in a recycling container according to the proportion of 100:1:1, controlling the temperature of the container at 180 ℃, reacting for 30min, cooling the temperature to room temperature after the reaction is finished, separating the fiber preform from the depolymerized resin, fully washing, and drying the depolymerized long fiber preform, and crushing and recycling the long fiber preform. Embodiment 2 is constituted by the above structure.
Example 3:
the internal hybrid fiber strength layer adopts T700 high-strength carbon fiber, high-strength S glass fiber and K129 aramid fiber to be mixed according to the proportion of 4:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a unidirectional fiber arrangement mode, and a laminated fabric structure is formed between adjacent laminated layers in an orthogonal laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 4:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.5mm. The processing temperature of the hot melting compounding is 220 ℃, the hot melting time is 25min, and the resin content of the final prepreg fabric monolayer is 45%.
The middle hybrid fiber rigidity layer is woven by adopting T300 high-strength carbon fibers, high-strength S glass fibers and K29 aramid fibers in a hybrid ratio of 2:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a three-dimensional seven-direction three-dimensional weaving structure, and a laminated fabric structure is formed between adjacent laminated layers in a quasi-isotropic laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 2:1:1, the single-layer thickness is 0.2mm, and the total thickness after hot melting and compounding is 0.7mm. The processing temperature of the hot melting compounding is 200 ℃, the hot melting time is 30min, and the resin content of the final prepreg fabric monolayer is 50%.
The external hybrid fiber flame-retardant layer adopts T700 high-strength carbon fiber and PPS flame-retardant fiber to be mixed according to the proportion of 3:1, and the two fibers are respectively subjected to hot melting and compounding in PET resin to form a prepreg fabric single layer, wherein 30% of aluminum hydroxide flame retardant filler is added in the PET resin, the single layer preform fabric adopts a plain weave two-dimensional weaving arrangement mode, and a quasi-isotropic laying mode is adopted between adjacent laminates to form a laminated fabric structure. The ratio of the number of layers of the prepreg fabric of the carbon fiber to the PPS fiber is 3:1, the single-layer thickness is 0.6mm, and the total thickness after hot melting and compounding is 2mm. The processing temperature of the hot melting compounding is 220 ℃, the hot melting time is 20min, and the resin content of the final prepreg fabric monolayer is 45%.
After lamination and combination, the prepreg single layer of the storage battery box body is prepared by hot-pressing one-step molding, wherein the hot-pressing temperature is 210 ℃, the hot-pressing time is 40min, and the pressure intensity of hot-pressing molding is 8MPa.
The PET resin-based hybrid fiber composite material box depolymerization recovery mode is as follows: placing the crushed material of the PET resin matrix composite part to be recycled, ethylene glycol and zinc acetate in a recycling container according to the proportion of 100:2:1, controlling the temperature of the container to be 170 ℃, reacting for 40min, cooling the temperature to room temperature after the reaction is finished, separating the fiber preform from the depolymerized resin, fully washing, and drying the depolymerized long fiber preform, and crushing and recycling the long fiber preform. Embodiment 3 is constituted by the above structure.
Example 4:
the internal hybrid fiber strength layer adopts T800 high-strength carbon fiber, high-strength S glass fiber and K129 aramid fiber to be mixed according to the proportion of 5:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a unidirectional fiber arrangement mode, and a laminated fabric structure is formed between adjacent laminated layers in an orthogonal laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 5:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.6mm. The processing temperature of the hot melting compounding is 220 ℃, the hot melting time is 25min, and the resin content of the final prepreg fabric monolayer is 35%.
The middle hybrid fiber rigidity layer is woven by adopting T300 high-strength carbon fibers, high-strength S glass fibers and K49 aramid fibers in a hybrid ratio of 4:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a three-dimensional four-way three-dimensional braiding structure, and a laminated fabric structure is formed between adjacent laminated layers in a quasi-isotropic laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 4:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.5mm. The processing temperature of the hot melting compounding is 200 ℃, the hot melting time is 30min, and the resin content of the final prepreg fabric monolayer is 40%.
The external hybrid fiber flame-retardant layer adopts T700 high-strength carbon fiber and PPTA flame-retardant fiber to be mixed according to the proportion of 2:1, and the two fibers are respectively subjected to hot melting and compounding in PET resin to form a prepreg fabric single layer, wherein 20% of aluminum hydroxide flame retardant filler is added in the PET resin, the single layer preform fabric adopts a satin two-dimensional weaving arrangement mode, and a laminated fabric structure is formed between adjacent laminated layers in a quasi-isotropic laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber to the PPTA fiber is 2:1, the single-layer thickness is 0.8mm, and the total thickness after hot melting and compounding is 2mm. The processing temperature of the hot melting compounding is 200 ℃, the hot melting time is 20min, and the resin content of the final prepreg fabric monolayer is 45%.
After lamination and combination, the prepreg single layer of the storage battery box body is prepared by hot-pressing one-step molding, wherein the hot-pressing temperature is 220 ℃, the hot-pressing time is 50min, and the pressure intensity of hot-pressing molding is 5MPa.
The PET resin-based hybrid fiber composite material box depolymerization recovery mode is as follows: placing the crushed material of the PET resin matrix composite part to be recycled, ethylene glycol and zinc acetate in a recycling container according to the proportion of 100:3:1, controlling the temperature of the container at 180 ℃, reacting for 30min, cooling the temperature to room temperature after the reaction is finished, separating the fiber preform from the depolymerized resin, fully washing, and drying the depolymerized long fiber preform, and crushing and recycling the long fiber preform. Specific example 4 was constituted by the above structure.
Example 5:
the internal hybrid fiber strength layer adopts T1000 high-strength carbon fiber, high-strength S glass fiber and K29 aramid fiber to be mixed according to the proportion of 3:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a unidirectional fiber arrangement mode, and a laminated fabric structure is formed between adjacent laminated layers in an oblique crossing laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 3:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.4mm. The processing temperature of the hot melting compounding is 190 ℃, the hot melting time is 30min, and the resin content of the final prepreg fabric monolayer is 40%.
The middle hybrid fiber rigidity layer is woven by adopting T1000 high-strength carbon fibers, high-strength S glass fibers and K29 aramid fibers in a hybrid ratio of 4:1:1. The three fibers are respectively combined with PET resin in a hot melting way to form a prepreg fabric single layer, the single-layer prefabricated body fabric adopts a three-dimensional five-way three-dimensional braiding structure, and a laminated fabric structure is formed between adjacent laminated layers in a quasi-isotropic laying mode. The ratio of the number of layers of the prepreg fabric of the carbon fiber, the glass fiber and the aramid fiber is 4:1:1, the single-layer thickness is 0.1mm, and the total thickness after hot melting and compounding is 0.5mm. The processing temperature of the hot melting compounding is 220 ℃, the hot melting time is 30min, and the resin content of the final prepreg fabric monolayer is 40%.
The outer hybrid fiber flame-retardant layer adopts T700 high-strength carbon fiber and PPTA flame-retardant fiber to be mixed according to the proportion of 2:1, and the two fibers are respectively subjected to hot melting and compounding in PET resin to form a prepreg fabric single layer, wherein 20% of aluminum hydroxide flame retardant filler is added in the PET resin, the single layer preform fabric adopts a twill two-dimensional weaving arrangement mode, and a quasi-isotropic laying mode is adopted between adjacent laminates to form a laminated fabric structure. The ratio of the number of layers of the prepreg fabric of the carbon fiber to the PPTA fiber is 2:1, the single-layer thickness is 0.08mm, and the total thickness after hot melting and compounding is 0.2mm. The processing temperature of the hot melting compounding is 200 ℃, the hot melting time is 20min, and the resin content of the final prepreg fabric monolayer is 45%.
After lamination and combination, the prepreg single layer of the storage battery box body is prepared by hot-pressing one-step molding, wherein the hot-pressing temperature is 210 ℃, the hot-pressing time is 30min, and the pressure intensity of hot-pressing molding is 7MPa.
The PET resin-based hybrid fiber composite material box depolymerization recovery mode is as follows: placing the crushed material of the PET resin matrix composite part to be recycled, ethylene glycol and zinc acetate in a recycling container according to the proportion of 100:1:1, controlling the temperature of the container to be 190 ℃, reacting for 25min, cooling the temperature to room temperature after the reaction is finished, separating the fiber preform from the depolymerized resin, fully washing, and drying the depolymerized long fiber preform, and crushing and recycling the long fiber preform. Embodiment 5 is constituted by the above structure.
Example 6:
a motor vehicle has a battery disposed in a battery case in embodiment 1 described above.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The storage battery box is characterized by comprising an inner hybrid fiber strength layer, an intermediate hybrid fiber stiffness layer and an outer hybrid fiber flame retardant layer which are sequentially arranged from inside to outside;
each layer of structure is a reinforced fiber preform structure and comprises a prepreg fabric single layer formed by compounding single-layer fiber fabrics with resin in a hot melting way, and a plurality of groups of prepreg fabric single layers are formed into a box structure in a hot pressing mode through a set lamination combination mode.
2. A battery case according to claim 1, wherein in the internal hybrid fiber strength layer, a single-layer preform fabric formed of a single-layer fiber fabric is heat-melt-compounded with a resin to form a prepreg fabric single layer, and a plurality of groups of prepreg fabric single layers form a laminated fabric structure.
3. A battery case according to claim 2, wherein the plurality of groups of prepreg fabric monolayers are arranged in a unidirectional fiber manner, and adjacent laminates are laid in an orthogonal, diagonal or quasi-isotropic manner to form a laminate fabric structure.
4. The battery case according to claim 1, wherein in the intermediate hybrid fiber stiffness layer, a single-layer preform fabric formed by a single-layer fiber fabric is thermally fused and compounded with resin to form a single-layer prepreg fabric, and a plurality of groups of single-layer prepreg fabrics form a three-dimensional woven structure.
5. The battery case of claim 4, wherein the plurality of sets of prepreg fabric monolayers form a three-dimensional woven structure using any one of three-dimensional four-way, three-dimensional five-way, three-dimensional six-way, or three-dimensional seven-way fabric structure types.
6. The battery case according to claim 1, wherein in the external hybrid fiber flame retardant layer, a single-layer preform fabric formed of a single-layer fiber fabric is heat-melt-compounded with resin to form a single-layer prepreg fabric, and a plurality of groups of single-layer prepreg fabrics form a two-dimensional woven structure.
7. The battery case of claim 6, wherein the plurality of sets of prepreg fabric monolayers form a two-dimensional weave structure by any one of a plain weave, a twill weave, or a satin weave type of fabric structure.
8. A battery case as claimed in claim 1, wherein the single-layer preform fabric of the exterior hybrid fiber flame retardant layer is fiber-based, hybrid linear flame retardant fibers.
9. A motor vehicle having a battery, characterized in that the battery is arranged in a battery compartment as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038470.8U CN220341372U (en) | 2023-04-26 | 2023-04-26 | Storage battery box and motor vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038470.8U CN220341372U (en) | 2023-04-26 | 2023-04-26 | Storage battery box and motor vehicle with same |
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| Publication Number | Publication Date |
|---|---|
| CN220341372U true CN220341372U (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321038470.8U Active CN220341372U (en) | 2023-04-26 | 2023-04-26 | Storage battery box and motor vehicle with same |
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| Country | Link |
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| CN (1) | CN220341372U (en) |
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2023
- 2023-04-26 CN CN202321038470.8U patent/CN220341372U/en active Active
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