CN110181833A - A kind of lightweight prepreg battery case and preparation method thereof - Google Patents
A kind of lightweight prepreg battery case and preparation method thereof Download PDFInfo
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- CN110181833A CN110181833A CN201910457288.8A CN201910457288A CN110181833A CN 110181833 A CN110181833 A CN 110181833A CN 201910457288 A CN201910457288 A CN 201910457288A CN 110181833 A CN110181833 A CN 110181833A
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- prepreg
- glass fibre
- battery case
- preforming
- glass
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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
- B29C70/34—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—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 shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The present invention provides a kind of lightweight prepreg battery cases and preparation method thereof.It is preforming that this method uses glass fibre prepreg to carry out on preforming tool first, carries out compression molding after preforming in hot setting mold and glass fibre prepreg battery case is prepared.This method is preforming using preforming tool progress high-volume, then carries out high temperature and pressure and prepares shaped article, can produce 100-120 part product daily, and production efficiency significantly improves, and meets high-volume requirement of the automobile industry for battery case.The intensity of used glass fibre prepreg is very high, finished product can do 0.9~1.2 millimeters thick, the thickness control for the battery case for using the glass fibre prepreg to prepare is 0.9~1.2mm, battery case loss of weight reaches 70%~80%, the unit energy density for substantially increasing battery case, has a good application prospect.
Description
Technical field
The present invention relates to new energy car battery box technology fields.More particularly to a kind of lightweight prepreg battery case and its
Preparation method.
Background technique
With the gradually great attention of Environmental, the demand of new-energy automobile is increased rapidly, research and development and production
Scale constantly expands.Battery case composition in new-energy automobile occupies important position in new-energy automobile structure,
It is an important factor for providing power source for new-energy automobile.
In use, battery case is while providing effective energy and power for new-energy automobile, due to single
The charge of battery is relatively small, and the quantity needed is big, causes battery box assembly overweight, i.e., battery case while the energy is provided very
The weight for increasing vehicle body of big degree.Under battery rated condition, the only lighter Shi Caineng of automobile gross weight makes speed faster, fortune
Row it is more convenient, therefore, the weight of Battery case can largely influence automobile accelerating ability and attainable max. speed.
Current battery box assembly itself occupies the 25%~30% of automobile gross weight, and metal stamping battery case weight therein can reach
More than 100 kilograms, the battery case weight that aluminium alloy is done also reaches more than 60~70 kilograms, so that battery case assembly itself consumes largely
Battery efficiency.In order to mitigate the quality of battery case.
There is more research to prepare battery case using fibrous composite at present, it is compound for example, by using the SMC of lighter weight
Material injection molding prepares battery case, can reduce the weight of Battery case to a certain extent using SMC material, but distance
There is also a certain distance for preferable effect, however it remains the case where Battery case heavier mass, is not able to satisfy lightweight battery
The market demand of case.
Summary of the invention
The present invention for the technical issues of be: the heavier mass of new energy car battery cabinet in the prior art makes automobile
Light use by biggish limitation, performance is affected to some extent, and mitigates Battery case weight although having at present
Technological means, but still cannot reach preferable weight loss effect；And it is lower for the production efficiency of light weight battery cabinet at present.
To solve the above-mentioned problems, the present invention provides a kind of lightweight prepreg battery cases and preparation method thereof.It is described
Epoxy prepreg cloth battery case is light-weight, intensity is high, the use of especially epoxy prepreg cloth significantly reduces the quality of battery case；
And production method of the present invention is simple and fast, can produce large batch of battery case in a short time, meet garage
Industry improves the production efficiency of lightweight battery case for the demand of lightweight battery case.
The present invention is achieved by the following technical solutions
A kind of preparation method of lightweight prepreg battery case, it is described the preparation method comprises the following steps: being existed with glass fibre prepreg
The preforming mode of glass fibre prepreg is pre-formed as on preforming tool, the die material for being then 150~170 DEG C in temperature
Middle molding carries out deburring, punches to get lightweight glass fibre prepreg battery case is arrived after molding.
The preparation method of the lightweight prepreg battery case, this method specifically includes the following steps:
(1) prepare preforming tool and glass fibre prepreg；
(2) it by the glass fibre prepreg of preparation, is cut, is laid on after cutting pre- according to the size of preforming tool
It on shaping mould, does preforming, obtains the preforming mode of glass fibre prepreg；
(3) the preforming mode of glass fibre prepreg described in step (2) is subjected to pressure maintaining solidification as in die material
5~15min；Release and cooling processing are carried out after the completion of solidification, then take out product；(release and is cooled down to product and taken
Mold temperature remains unchanged in product process)；
(4) to step (3) take out product carry out deburring, punching to get arrive lightweight glass fibre prepreg battery case.
The preparation method of the lightweight prepreg battery case, preforming tool described in step (1) is by glass reinforced plastic, wood
Mould, punching block or aluminum dipping form are prepared；(preforming tool is manufactured according to product size)；
The preforming tool includes the flange of preforming tool ontology and body edges.
The preparation method of the lightweight prepreg battery case, step (2) it is described be laid with glass fibre prepreg it
Before, low temperature release agent is sprayed first on preforming tool, is laid with glass fibre prepreg after the completion of the spraying of low temperature release agent；
The low temperature release agent is silicone oil, methyl-silicone oil or polyethylene wax.
The preparation method of the lightweight prepreg battery case, the laying glass fibre on preforming tool are pre-
It is specific as follows when leaching material: to be laid with layer of glass prepreg coarse cloth first on preforming tool ontology and flange, be laid with
Cheng Hou, then it is laid with layer glass fiber prepreg material coarse cloth upwards on flange；
After the completion of above-mentioned laying, it is thick that layer of glass prepreg is laid on preforming tool ontology and flange upwards
Cloth after the completion of laying, then is successively laid with layer glass fiber prepreg material coarse cloth and layer of glass preimpregnation upwards on flange
Expect fine cloth；
After the completion of above-mentioned laying, it is laid with layer of glass prepreg coarse cloth upwards in preforming tool ontology and flange,
It after the completion of laying, then is laid with layer of glass prepreg fine cloth upwards on flange, that is, completes the paving of glass fibre prepreg
If.
The preparation method of the lightweight prepreg battery case, the glass fibre prepreg fine cloth are 200g/m2's
Glass fibre prepreg；The glass fibre prepreg coarse cloth is 400g/m2Glass fibre prepreg.
The preparation method of the lightweight prepreg battery case, step (3) preformed product is as hot setting mold
When, one layer of release agent is sprayed on the surface of hot setting mold first, then places into the preforming mode of glass fibre prepreg.
The preparation method of the lightweight prepreg battery case, step (3) are described preforming by glass fibre prepreg
Mode is specific as follows as carrying out solidifying in die material: by the preforming mode of glass fibre prepreg as temperature be 150~
In 170 DEG C of die material, it is vacuumized when the upper mold of die material is fastened with lower mold, is taken out after fastening completely
Vacuum terminates；Then 6~10MPa is boosted to die material, it is pre- to glass fibre under the conditions of 150~170 DEG C, 6~10MPa
Leaching expects that preforming mode carries out high temperature and pressure and suppresses 5~15min；
The vacuum degree for vacuumizing completion rear mold is -0.1~-0.15MPa.
The preparation method of the lightweight prepreg battery case, release described in step (3) and cooling processing are specific such as
Under: the preforming mode of glass fibre prepreg keeps the temperature release, after the completion of release after the completion of die material high temperature high pressure is suppressed
Using pneumatic jack demoulding, cooling, by the battery case cooling (then increasing the intensity of battery case) of compression molding, cooling is completed to obtain
Lightweight glass fibre prepreg battery case.
Preferably, the pressure that gas is filled into when top gas demoulding, cooling is 0.6~0.8MPa.
A kind of lightweight prepreg battery case being prepared using above-mentioned preparation method.
Above-mentioned glass fibre prepreg is epoxy glass fiber prepreg.
Compared with prior art, the present invention has following positive beneficial effect
(1) present invention prepares battery case using glass fibre epoxy prepreg, significantly reduces the weight of battery case, and existing
There is technology to compare, the weight of gained battery case is significantly mitigated, more using operations such as the new-energy automobiles of the battery case
It is convenient, it further reduced while reducing environmental pollution to energy consumption；Glass fibre epoxy prepreg is by impregnating
The glass fiber woven cloth of epoxy resin and obtain, epoxy resin have preferable compactness, water resistant, anti-leakage is good, intensity is high,
Have the characteristics that adhesive force is strong simultaneously.So the battery case being prepared using the glass fibre epoxy prepreg is bright in weight
While aobvious mitigation, it may have higher intensity, water resistant, leakage resistance can be good, use as battery case, have very for battery
Good protective value；
(2) glass fibre epoxy prepreg used in the present invention is prepared battery case light weight, intensity are very high
(tensile strength under the conditions of 85 DEG C is 438MPa, and the tensile strength under the conditions of -40 DEG C is 591MPa), finished product can do 0.9~
1.2 millimeters thicks, for 0.9~1.2mm, battery case subtracts the thickness control for the battery case for using the glass fibre epoxy prepreg to prepare
It weighs to 70%~80%, substantially increases the unit energy density of battery case, have a good application prospect；
(3) present invention in battery case preparation process, first using glass fibre epoxy prepreg carry out it is preforming (in advance at
Type process operations are simple, quick, obtain a large amount of preforming mode in a short time), it is then that preforming mode is direct
Being placed on temperature is to be suppressed in 150~170 DEG C of die material, after the completion of compacting, for high-temperature molding battery case into
Row be cooled to room temperature, but in this process, the temperature of die material itself without cooling, i.e., under the high temperature conditions by glass fibers
The dimension preforming mode of epoxy prepreg is put into hot setting mold, suppress and directly take out at high temperature after the completion, and high temperature is into height
The program that temperature goes out also substantially increases the efficiency of production process, avoids the long-time heating consumption of mold；Take out molding electricity
After the case of pond, the preforming preforming mode of batch can be placed on to the die material that temperature is maintained at 150~170 DEG C
In, it can be realized continuous production and uninterruptedly produce, there is very high production efficiency.120~160 products can be produced daily, it is raw
It produces efficiency to significantly improve and (improve nearly 10 times), meets high-volume requirement of the automobile industry for battery case；
In addition, vacuumizing, vacuumizing to mould inside first when carrying out hot setting using hot setting mold
Rear mold is closed completely, then carries out high temperature high pressure process；It vacuumizes so that preforming mode inside air that may be present is complete
It is extracted entirely, avoids the generation of air entrapment, further improve the intensity of the lightweight battery case；Be also battery case
Surface is more smooth, internal there will not be bubble generation.
(4) it is produced using this method, it is preforming using preforming tool progress high-volume first, then carry out high temperature
High pressure prepares shaped article, the product being prepared by pneumatic jack demoulding, fast cooling in die material, can rapid curing,
So that battery case reaches very high intensity, directlying adopt the battery case that glass fibre epoxy prepreg obtains be can be used, and is not necessarily to
The supporters such as bracket are disposed wherein, further mitigate the weight of the battery case.The battery case is not being pacified in battery tank wall
It can be used under conditions of dress bracket, i.e., using the battery case of lightweight fiberglass epoxy prepreg preparation with very high strong
Degree, light weight, intensity are high, have a good application prospect in new-energy automobile.
Therefore, the present invention also achieves while preparing light, high-intensitive battery case by rapid curing, high efficiency
The continuous uninterrupted quickly production of the battery case.It has been all satisfied the requirement of the sector in all fields.
Detailed description of the invention
Fig. 1 is preforming tool schematic diagram of the present invention；
Fig. 2 is the ontology longitudinal profile schematic diagram for being laid with the preforming mode after epoxy prepreg cloth；
Fig. 3 is the flange longitudinal profile schematic diagram for being laid with the preforming mode after epoxy prepreg cloth；
Fig. 4 is the section segmentation schematic diagram for being laid with the preforming mode after epoxy prepreg cloth；
Fig. 5 is the cavity schematic diagram of die material；
In figure, 1 indicates preforming tool ontology, and 2 indicate the flange of preforming tool, and 3 indicate that glass fibre prepreg is thick
Cloth, 4 indicate glass fibre prepreg fine cloth.
Specific embodiment
The present invention is described in more details below by specific embodiment, but is not intended to restrict the invention
Protection scope.
The present invention provides a kind of preparation methods of lightweight prepreg battery case, method includes the following steps:
(1) prepare preforming tool and glass fibre prepreg；
The preforming tool can be prepared by glass reinforced plastic, wooden model, punching block or aluminum dipping form etc.；It prepares first multiple
It is preforming tool, stand-by；The preforming tool preparation process can be preparation process well known to those skilled in the art, choosing
Preforming tool is prepared with different materials, common mold preparation process, the die size of preparation is according to actual needs
It is determined；
The preforming tool being prepared includes the flange of preforming tool ontology and body edges, as shown in Figure 1；
Preferably, 3~5 sets of preforming tools are prepared, in case using.
The glass fibre prepreg is epoxy glass fiber prepreg well known to those skilled in the art, is commercially available production
Product；
(2) it by the glass fibre prepreg of preparation, is cut, is laid on after cutting pre- according to the size of preforming tool
It (is laid under the conditions of 20 ± 10 DEG C of temperature) on shaping mould, does preforming, obtain the preforming mode of glass fibre prepreg；
Wherein, before being laid with glass fibre prepreg, one layer of release agent is sprayed in the inner surface of preforming tool first；
The release agent can be silicone oil, the release agents such as methyl-silicone oil or polyethylene wax, or those skilled in the art are known
Release agent；
Then glass fibre prepreg is re-layed, as shown in Figure 2, Figure 3, Figure 4, specific laying is as follows: first preforming
It is laid with layer of glass prepreg coarse cloth on die ontology and flange, after the completion of laying, is laid with upwards again on flange
Layer glass fiber prepreg material coarse cloth；
After the completion of above-mentioned laying, in the upward glass fibre preimpregnation for being laid with one layer of covering preforming tool ontology and flange
Expect coarse cloth, after laying, then is successively laid with layer glass fiber prepreg material coarse cloth and layer of glass preimpregnation upwards on flange
Expect fine cloth；
After the completion of above-mentioned laying, then it is laid with the glass fibre preimpregnation of one layer of covering preforming tool ontology and flange upwards
Expect coarse cloth, after laying, then is laid with layer of glass prepreg fine cloth upwards on flange；Glass fibers are obtained after the completion of being laid with
Tie up the preforming mode of prepreg；(i.e. from known to laying above: on the ontology of the preforming mode of glass fibre prepreg from it is lower to
On be laid with three one-tenth glass fibre prepreg coarse cloth altogether, it is thick to be successively laid with 6 layers of glass fibre prepreg from bottom to top on flange
Cloth, layer of glass prepreg fine cloth, layer of glass prepreg coarse cloth, layer of glass prepreg fine cloth)；
Wherein, the glass fibre prepreg fine cloth is 200g/m2Glass fibre prepreg, glass fibre prepreg
Coarse cloth is 400g/m2Glass fibre prepreg.
(3) by step (2) it is described it is preforming after the preforming mode of glass fibre prepreg as in die material, carry out
Pressure maintaining solidifies 5~15min；Release and cooling processing are carried out after the completion of solidification, then take out product；
Wherein, die material inner surface is coated with release agent；The release agent can be for known to those skilled in the art
Release agent；
After coated release agent, the temperature of die material is warming up to 150~170 DEG C in advance, then presoaks glass fibre
Expect in the mold after preforming mode is placed on heating；After the completion of placement, fastened in the upper mold section and female die of die material
Cheng Zhong, upper mold section are moved downward to the sealing ring on upper mold section when touching female die, vacuumize to mold, and vacuumizing makes
It obtains and is fastened completely in mold, the vacuum degree in mold is -0.1MPa；Battery case can be effectively avoided to generate gas by vacuumizing
The problem of hole or bubble, further improves the performances such as the intensity of battery case, but also the battery case surface of preparation is smooth flat
It is whole, using effect is good.Die material cavity schematic diagram therein, can also be with as shown in figure 5, sealing device therein is sealing ring
For sealing device known to other skilled in the art；
After fastening completely, die material inside is carried out boosting to 6~10MPa under vacuum conditions；Then it is in temperature
150~170 DEG C, pressure be 6~10MPa under conditions of to preforming mode carry out 5~15min of hot setting；Hot setting is complete
Cheng Hou carries out heat preservation release, and the pressure in mold is unloaded by 6~10MPa and is depressed into normal pressure, after the completion of release；Mold is opened, is used
Mould gas top demould and cool down to glass fibre prepreg battery case, takes out product and is cooled to room temperature, obtains light weight
Change prepreg battery case.
Preferably, the pressure that gas is filled into when top gas demoulding, cooling is 0.6~0.8MPa.
During being somebody's turn to do, during whole operation, die material still maintains 150~170 DEG C of temperature-resistantization.
The operation of the process mold can be operating process well known to those skilled in the art, and the die material used can be with
For mold well known to those skilled in the art.
(4) to step (3) take out product carry out deburring, punching to get arrive epoxy prepreg cloth battery case
During being somebody's turn to do, according to actual requirement, deburring, punching are carried out to glass fibre prepreg battery case
Obtain glass fibre prepreg battery case finished product.Wherein the deburring, punching can be behaviour well known to those skilled in the art
Make.
When being prepared using this method, first using more set preforming tools will prepare the glass fibre prepreg of battery case into
Row is preforming, while obtaining multiple preforming mode of glass fibre prepreg, is then molded into using hot setting mold
Type；And the hot setting mold temperature used does not cool down, and remains higher temperature.Therefore, it can be realized successively
Production, hence it is evident that improve production efficiency.Preparation process is easy to operate, pollution-free.
The present invention also provides a kind of glass fibre prepreg battery cases being prepared using above-mentioned preparation method.The electricity
Pond case with a thickness of 0.9~1.2mm, intensity is high, and (tensile strength under the conditions of 85 DEG C is 438MPa, the stretching under the conditions of -40 DEG C
Intensity is 591MPa), waterproof, anti-permeability are good, it can preferably be used for new energy car battery case, and the battery case
Weight obtain it is substantially reduced, compared with new energy car battery case in the prior art, which reaches 70%~
80%, reach apparent weight loss effect and intensity with higher, waterproof, impermeable performance.Before good application
Scape.
In order to easily facilitate the understanding of the present invention, below by specific embodiment to lightweight prepreg electricity of the present invention
The protection scope that the preparation method of pond case is more illustrated, but is not intended to restrict the invention.
The glass fibre prepreg used in following embodiment is glass fibre epoxy prepreg.
Embodiment 1
A kind of preparation method of lightweight prepreg battery case, method includes the following steps:
(1) prepare preforming tool and glass fibre prepreg；
The preforming tool is to be prepared using glass reinforced plastic, by conventional mould preparation method, as shown in Figure 1；
By 4 sets of preforming tools of this method preparation, for use；
Prepare glass fibre prepreg coarse cloth and glass fibre prepreg fine cloth；
The glass fibre prepreg fine cloth is 200g/m2, with a thickness of 0.2mm；The glass fibre prepreg is thick
Cloth is 400g/m2, with a thickness of 0.4mm；
(2) the glass fibre prepreg for preparing step (1), is laid with (in 20 ± 10 DEG C of temperature on preforming tool
It is laid under the conditions of degree), the preforming mode of glass fibre prepreg is obtained after the completion of being laid with；It is specific as follows:
One layer of low temperature release agent silicone oil is coated on preforming tool surface first；
Then it is laid with glass fibre prepreg, specific process of deployment is as follows: first on preforming tool ontology and flange
It is laid with layer of glass prepreg coarse cloth, after the completion of laying, is laid with layer glass fiber prepreg upwards again on flange
Expect coarse cloth；
After the completion of above-mentioned laying, in the upward glass fibre preimpregnation for being laid with one layer of covering preforming tool ontology and flange
Expect coarse cloth, after laying, then is successively laid with layer glass fiber prepreg material coarse cloth and layer of glass preimpregnation upwards on flange
Expect fine cloth；
After the completion of above-mentioned laying, then it is laid with the glass fibre preimpregnation of one layer of covering preforming tool ontology and flange upwards
Expect coarse cloth, after laying, then is laid with layer of glass prepreg fine cloth upwards on flange；Glass fibers are obtained after the completion of being laid with
Tie up the preforming mode of prepreg；
Multiple preforming mode of glass fibre prepreg are laid with simultaneously using more set preforming tools, it is spare；
(3) by the preforming mode of glass fibre prepreg that step (2) obtains as carrying out high temperature in hot setting mold
Solidification obtains glass fibre prepreg battery case, specific as follows:
Prepare hot setting mold, is coated with one layer of release agent silicon rubber on its surface, after the completion of coating, its temperature is heated up
To 150~160 DEG C；
Then the preforming mode of glass fibre prepreg step (2) obtained is as in die material, in die material
Upper mold section and female die fasten during mold is vacuumized, upper mold is closed completely with lower mold, complete to vacuumize,
So that the vacuum degree in mold is -0.1MPa；After the completion of vacuumizing and after upper mold section and female die fasten completely, die material
Inside carries out boosting to 6~7MPa；Glass fibre is presoaked under conditions of temperature is 150~160 DEG C, pressure is 6~7MPa
Expect that preforming mode carries out 12~15min of hot setting, completes molding；
After the completion of hot press moulding, heat preservation release is carried out, the pressure in mold is unloaded by 6~7MPa and is depressed into normal pressure (when about
Between 2~4s), after the completion of release；Mold is opened, while demould and to glass fibre prepreg battery case using mould gas top
Cool down, takes out product, be cooled to room temperature, obtain glass fibre prepreg battery case.
During being somebody's turn to do, during being cooled to room temperature by 150~160 DEG C to glass fibre prepreg battery case, high temperature
The temperature that mold still maintains 150~160 DEG C does not cool down.
(4) to step (3) take out product carry out deburring, punching to get arrive glass fibre prepreg battery case.The implementation
The Battery case that the battery case that example is prepared is 1 meter.
During being somebody's turn to do, according to actual requirement, deburring, punching are carried out to glass fibre prepreg battery case
Obtain glass fibre prepreg battery case finished product.Wherein the deburring, punching can be behaviour well known to those skilled in the art
Make.
Embodiment 2
A kind of preparation method of lightweight prepreg battery case, method includes the following steps:
(1) prepare preforming tool and glass fibre prepreg；
The preforming tool is to use steel, obtains preforming tool by machining, as shown in Figure 1；
By 5 sets of preforming tools of this method preparation, for use；
Prepare glass fibre prepreg coarse cloth and glass fibre prepreg fine cloth；
The glass fibre prepreg fine cloth is 200g/m2, with a thickness of 0.2mm, (it is thick after being suppressed by die material
Degree reaches 0.15~0.17mm)；The glass fibre prepreg coarse cloth is 400g/m2, (pass through high temperature mould with a thickness of 0.4mm
Tool compacting with a thickness of 0.31~0.35mm)；
(2) the glass fibre prepreg for preparing step (1), is laid with (in 20 ± 10 DEG C of temperature on preforming tool
It is laid under the conditions of degree), the preforming mode of glass fibre prepreg is obtained after the completion of being laid with；It is specific as follows:
One layer of low temperature release agent silicone oil is coated on preforming tool surface first；
Then it is laid with glass fibre prepreg, specific process of deployment is as follows: first on preforming tool ontology and flange
It is laid with layer of glass prepreg coarse cloth, after the completion of laying, is laid with layer glass fiber prepreg upwards again on flange
Expect coarse cloth；
After the completion of above-mentioned laying, in the upward glass fibre preimpregnation for being laid with one layer of covering preforming tool ontology and flange
Expect coarse cloth, after laying, then is successively laid with layer glass fiber prepreg material coarse cloth and layer of glass preimpregnation upwards on flange
Expect fine cloth；
After the completion of above-mentioned laying, then it is laid with the glass fibre preimpregnation of one layer of covering preforming tool ontology and flange upwards
Expect coarse cloth, after laying, then is laid with layer of glass prepreg fine cloth upwards on flange；Glass fibers are obtained after the completion of being laid with
Tie up the preforming mode of prepreg；
It is laid with simultaneously using more set preforming tools and prepares multiple preforming mode of glass fibre prepreg, it is spare；
(3) the preforming battery case of glass fibre prepreg for obtaining step (2) is high as carrying out in hot setting mold
Temperature solidification obtains glass fibre prepreg battery case, specific as follows:
Prepare hot setting mold, is coated with one layer of release agent silicon rubber on its surface, after the completion of coating, its temperature is heated up
To 160~170 DEG C；
Then the preforming mode of glass fibre prepreg step (2) obtained is as in die material, in die material
Upper mold section and female die fasten during mold is vacuumized, upper mold is closed completely with lower mold, complete to vacuumize,
So that the vacuum degree in mold is -0.1MPa；After the completion of vacuumizing and after upper mold section and female die fasten completely, die material
Inside carries out boosting to 7~8MPa；Glass fibre is presoaked under conditions of temperature is 160~170 DEG C, pressure is 7~8MPa
Expect that preforming mode carries out 8~12min of hot setting, completes molding；
After fastening completely, die material inside is carried out boosting to 7~8MPa under vacuum conditions；Temperature be 160~
170 DEG C, pressure be 7~8MPa under conditions of to the preforming mode of glass fibre prepreg carry out 8~12min of hot setting, it is complete
At molding；
After the completion of hot press moulding, heat preservation release is carried out, the pressure in mold is unloaded by 7~8MPa and is depressed into normal pressure (when about
Between 2~4s), after the completion of release；Mold is opened, while demould and to glass fibre prepreg battery case using mould gas top
Cool down, takes out product, be cooled to room temperature, obtain glass fibre prepreg battery case.
During being somebody's turn to do, during being cooled to room temperature by 160~170 DEG C to glass fibre prepreg battery case, high temperature
The temperature that mold still maintains 160~170 DEG C does not cool down.
(4) to step (3) take out product carry out deburring, punching to get arrive glass fibre prepreg battery case.The implementation
The Battery case that the battery case that example is prepared is 2 meters.
During being somebody's turn to do, according to actual requirement, deburring, punching are carried out to glass fibre prepreg battery case
Obtain glass fibre prepreg battery case finished product.Wherein the deburring, punching can be behaviour well known to those skilled in the art
Make.
Embodiment 3
A kind of preparation method of lightweight prepreg battery case, method includes the following steps:
(1) prepare preforming tool and glass fibre prepreg；
The preforming tool is to use steel, obtains preforming tool by machining, as shown in Figure 1；
By 5 sets of preforming tools of this method preparation, for use；
Prepare glass fibre prepreg coarse cloth and glass fibre prepreg fine cloth；
The glass fibre prepreg fine cloth is 200g/m2, with a thickness of 0.2mm, (it is thick after being suppressed by die material
Degree reaches 0.15~0.17mm)；The glass fibre prepreg coarse cloth is 400g/m2, (pass through high temperature mould with a thickness of 0.4mm
Tool compacting with a thickness of 0.31~0.35mm)；
(2) the glass fibre prepreg for preparing step (1), is laid with (in 20 ± 10 DEG C of temperature on preforming tool
It is laid under the conditions of degree), the preforming mode of glass fibre prepreg is obtained after the completion of being laid with；It is specific as follows:
One layer of low temperature release agent silicone oil is coated on preforming tool surface first；
Then it is laid with glass fibre prepreg, specific process of deployment is as follows: first on preforming tool ontology and flange
It is laid with layer of glass prepreg coarse cloth, after the completion of laying, is laid with layer glass fiber prepreg upwards again on flange
Expect coarse cloth；
After the completion of above-mentioned laying, in the upward glass fibre preimpregnation for being laid with one layer of covering preforming tool ontology and flange
Expect coarse cloth, after laying, then is successively laid with layer glass fiber prepreg material coarse cloth and layer of glass preimpregnation upwards on flange
Expect fine cloth；
After the completion of above-mentioned laying, then it is laid with the glass fibre preimpregnation of one layer of covering preforming tool ontology and flange upwards
Expect coarse cloth, after laying, then is laid with layer of glass prepreg fine cloth upwards on flange；Glass fibers are obtained after the completion of being laid with
Tie up the preforming mode of prepreg；
It is laid with simultaneously using more set preforming tools and prepares multiple preforming mode of glass fibre prepreg, it is spare；
(3) the preforming battery case of glass fibre prepreg for obtaining step (2) is high as carrying out in hot setting mold
Temperature solidification obtains glass fibre prepreg battery case, specific as follows:
Prepare hot setting mold, is coated with one layer of release agent silicon rubber on its surface, after the completion of coating, its temperature is heated up
To 160 ± 5 DEG C；
Then the preforming mode of glass fibre prepreg step (2) obtained is as in die material, in die material
Upper mold section and female die fasten during mold is vacuumized, upper mold is closed completely with lower mold, complete to vacuumize,
So that the vacuum degree in mold is -0.1MPa；After the completion of vacuumizing and after upper mold section and female die fasten completely, die material
Inside carries out boosting to 8~10MPa；Glass fibre is presoaked under conditions of temperature is 160 ± 5 DEG C, pressure is 8~10MPa
Expect that preforming mode carries out 7~9min of hot setting, completes molding；
After fastening completely, die material inside is carried out boosting to 8~10MPa under vacuum conditions；Temperature be 160 ±
5 DEG C, pressure be 8~10MPa under conditions of to the preforming mode of glass fibre prepreg carry out 7~9min of hot setting, complete
Molding；
After the completion of hot press moulding, heat preservation release is carried out, the pressure in mold is unloaded by 8~10MPa and is depressed into normal pressure (when about
Between 2~4s), after the completion of release；Mold is opened, while demould and to glass fibre prepreg battery case using mould gas top
Cool down, takes out product, be cooled to room temperature, obtain glass fibre prepreg battery case.
During being somebody's turn to do, during being cooled to room temperature by 160 ± 5 DEG C to glass fibre prepreg battery case, high temperature mould
The temperature that tool still maintains 160 ± 5 DEG C does not cool down.
(4) to step (3) take out product carry out deburring, punching to get arrive glass fibre prepreg battery case.The implementation
The Battery case that the battery case that example is prepared is 1.5 meters.
During being somebody's turn to do, according to actual requirement, deburring, punching are carried out to glass fibre prepreg battery case
Obtain glass fibre prepreg battery case finished product.Wherein the deburring, punching can be behaviour well known to those skilled in the art
Make.
The box body wall of battery case prepared by the present invention is detected, the results are shown in Table 1.As seen from the results in Table 1, originally
The lightweight prepreg battery case intensity with higher being prepared is invented, in battery tank wall does not need that any support is added
Object can be used, and further reduced the quality of battery case, testing result is specific as follows:
The detection of 1 epoxy prepreg cloth battery case box body wall of table
From 1 content of table: light weight battery case prepared by the present invention has good intensity, and the battery case tank wall is thin, by force
Degree is big, and bending strength, tensile strength meet requirement.And the preparation method is efficiently quick, has a good application prospect.
Claims (10)
1. a kind of preparation method of lightweight prepreg battery case, which is characterized in that described the preparation method comprises the following steps: with glass fibre
Prepreg is pre-formed as the preforming mode of glass fibre prepreg on preforming tool, is then 150~170 DEG C in temperature
It is molded in die material, deburring is carried out after molding, is punched to get lightweight glass fibre prepreg battery case is arrived.
2. the preparation method of lightweight prepreg battery case according to claim 1, which is characterized in that this method is specifically wrapped
Include following steps:
(1) prepare preforming tool and glass fibre prepreg；
(2) it by the glass fibre prepreg of preparation, is cut, is laid on after cutting preforming according to the size of preforming tool
It on mould, does preforming, obtains the preforming mode of glass fibre prepreg；
(3) by the preforming mode of glass fibre prepreg described in step (2) as in die material temperature be 150~170
Pressure maintaining solidification is carried out under conditions of DEG C；Release and cooling processing are carried out after the completion of solidification, then take out product；
(4) to step (3) take out product carry out deburring, punching to get arrive lightweight glass fibre prepreg battery case.
3. the preparation method of lightweight prepreg battery case according to claim 2, which is characterized in that step (1) is described
Preforming tool be prepared by glass reinforced plastic, wooden model, punching block or aluminum dipping form；
The preforming tool includes the flange of preforming tool ontology and body edges.
4. the preparation method of lightweight prepreg battery case according to claim 2, which is characterized in that step (2) is described
Before being laid with glass fibre prepreg, low temperature release agent is sprayed first on preforming tool, the spraying of low temperature release agent is completed
It is laid with glass fibre prepreg afterwards；
The low temperature release agent is silicone oil, methyl-silicone oil or polyethylene wax.
5. according to the preparation method of the described in any item lightweight prepreg battery cases of claim 2~4, which is characterized in that institute
It is specific as follows to state the laying glass fibre prepreg on preforming tool:
Layer of glass prepreg coarse cloth is laid with first on preforming tool ontology and flange, after the completion of laying, then in method
Layer glass fiber prepreg material coarse cloth is laid on orchid upwards；
After the completion of above-mentioned laying, layer of glass prepreg coarse cloth, paving are laid on preforming tool ontology and flange upwards
If after the completion, then being successively laid with layer glass fiber prepreg material coarse cloth upwards on flange and layer of glass prepreg being thin
Cloth；
After the completion of above-mentioned laying, it is laid with layer of glass prepreg coarse cloth upwards in preforming tool ontology and flange, is laid with
After the completion, then on flange it is laid with layer of glass prepreg fine cloth upwards, that is, completes the laying of glass fibre prepreg.
6. the preparation method of lightweight prepreg battery case according to claim 5, which is characterized in that the glass fibre
Prepreg fine cloth is 200g/m2Glass fibre prepreg；The glass fibre prepreg coarse cloth is 400g/m2Glass fibre
Prepreg.
7. the preparation method of lightweight prepreg battery case according to claim 2, which is characterized in that step (3) in advance at
When type product is as hot setting mold, one layer of release agent is sprayed on the surface of hot setting mold first, then places into glass
The preforming mode of glass fiber prepreg material.
8. the preparation method of lightweight prepreg battery case according to claim 2 or 7, which is characterized in that step (3) institute
It states the preforming mode of glass fibre prepreg is specific as follows as carrying out solidifying in die material: glass fibre prepreg is pre-
It forms in the die material that mode is 150~170 DEG C as temperature, when the upper mold of die material and lower mold are fastened
It is vacuumized, vacuumizes end after fastening completely；Then 6~10MPa is boosted to die material, 150~170 DEG C, 6~
High temperature and pressure is carried out to the preforming mode of glass fibre prepreg under the conditions of 10MPa and suppresses 5~15min；
The vacuum degree for vacuumizing completion rear mold is -0.1~-0.15MPa.
9. the preparation method of lightweight prepreg battery case according to claim 2, release and cooling described in step (3)
Handle specific as follows: the preforming mode of epoxy prepreg cloth keeps the temperature release, release after the completion of die material high temperature high-pressure curing
Pneumatic jack demoulding, cooling are used after the completion, the battery case of compression molding is cooled down, and it is pre- that cooling completion obtains lightweight glass fibre
Leaching material battery case.
10. a kind of lightweight prepreg battery case being prepared using preparation method described in claim 1.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722815A (en) * | 2019-10-21 | 2020-01-24 | 中电莱斯信息***有限公司 | Modularized forming process of light high-strength carbon fiber portable box |
| CN112339296A (en) * | 2020-09-22 | 2021-02-09 | 合肥兴海元能源科技有限公司 | Forming processing method of glass fiber preformed body for RTM (resin transfer molding) |
| CN112454941A (en) * | 2020-10-09 | 2021-03-09 | 许剑海 | Manufacturing process of composite material battery box |
| CN112873914A (en) * | 2020-12-29 | 2021-06-01 | 江苏华曼复合材料科技有限公司 | Method for manufacturing high top cover of truck and high top cover of truck |
| CN113895055A (en) * | 2021-09-02 | 2022-01-07 | 佛山智汇君彰新材料科技有限公司 | Method for preparing battery box of marine equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130252059A1 (en) * | 2012-03-23 | 2013-09-26 | Lg Hausys, Ltd. | Battery pack case assembly for electric and hybrid vehicles using a plastic composite and method for manufacturing the same |
| CN108582733A (en) * | 2017-11-22 | 2018-09-28 | 艾达索高新材料芜湖有限公司 | Chopped carbon fiber felt prepreg quick shaping process and its degradation and recovery method |
| KR20180107886A (en) * | 2017-03-23 | 2018-10-04 | (주)세원물산 | Mold apparatus for resin transfer molding of electric vehicle battery case and manufacturing method therefor |
| CN109353031A (en) * | 2018-11-19 | 2019-02-19 | 苏州银禧新能源复合材料有限公司 | The preparation method of battery box cover |
-
2019
- 2019-05-29 CN CN201910457288.8A patent/CN110181833A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130252059A1 (en) * | 2012-03-23 | 2013-09-26 | Lg Hausys, Ltd. | Battery pack case assembly for electric and hybrid vehicles using a plastic composite and method for manufacturing the same |
| KR20180107886A (en) * | 2017-03-23 | 2018-10-04 | (주)세원물산 | Mold apparatus for resin transfer molding of electric vehicle battery case and manufacturing method therefor |
| CN108582733A (en) * | 2017-11-22 | 2018-09-28 | 艾达索高新材料芜湖有限公司 | Chopped carbon fiber felt prepreg quick shaping process and its degradation and recovery method |
| CN109353031A (en) * | 2018-11-19 | 2019-02-19 | 苏州银禧新能源复合材料有限公司 | The preparation method of battery box cover |
Non-Patent Citations (2)
| Title |
|---|
| F.C.坎贝尔: "《先进复合材料的制造工艺》", 31 December 2016, 上海交通大学出版社 * |
| 周先辉: "《自润滑复合材料与高效重载滑动螺旋副》", 31 December 2015, 华中科技大学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722815A (en) * | 2019-10-21 | 2020-01-24 | 中电莱斯信息***有限公司 | Modularized forming process of light high-strength carbon fiber portable box |
| CN112339296A (en) * | 2020-09-22 | 2021-02-09 | 合肥兴海元能源科技有限公司 | Forming processing method of glass fiber preformed body for RTM (resin transfer molding) |
| CN112454941A (en) * | 2020-10-09 | 2021-03-09 | 许剑海 | Manufacturing process of composite material battery box |
| CN112454941B (en) * | 2020-10-09 | 2022-07-08 | 许剑海 | Manufacturing process of composite material battery box |
| CN112873914A (en) * | 2020-12-29 | 2021-06-01 | 江苏华曼复合材料科技有限公司 | Method for manufacturing high top cover of truck and high top cover of truck |
| CN113895055A (en) * | 2021-09-02 | 2022-01-07 | 佛山智汇君彰新材料科技有限公司 | Method for preparing battery box of marine equipment |
| CN113895055B (en) * | 2021-09-02 | 2023-10-24 | 佛山智汇君彰新材料科技有限公司 | Method for preparing battery box of marine equipment |
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