CN109353031A - The preparation method of battery box cover - Google Patents
The preparation method of battery box cover Download PDFInfo
- Publication number
- CN109353031A CN109353031A CN201811374310.4A CN201811374310A CN109353031A CN 109353031 A CN109353031 A CN 109353031A CN 201811374310 A CN201811374310 A CN 201811374310A CN 109353031 A CN109353031 A CN 109353031A
- Authority
- CN
- China
- Prior art keywords
- preparation
- box cover
- battery box
- prepreg
- mold core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B29C70/342—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 isostatic pressure
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7146—Battery-cases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The present invention provides a kind of preparation method of battery box cover comprising following steps: S1, providing continuous fiber reinforcement thermosetting resin prepreg and SMC sheet；S2, it is successively laid with prepreg, SMC layers and prepreg on mold core, obtains precast body；S3, mold core is placed in vaccum-pumping equipment together with precast body, carries out vacuumizing pre-compacted；S4, mold core is placed on the formpiston that preheating is completed together with the precast body of pre-compacted, and molds, solidifies；After S5, sizing to be solidified, the product by mold core together with curing molding takes out from mold, compresses product using setting tooling, is cooled down.The higher mechanical property requirements of case lid be not only able to satisfy by the battery box cover that preparation method of the invention obtains, but also have optimized that product is apparent and air-tightness.Compared with traditional case lid, the performances such as machinery, impact resistance, resistance to baked wheaten cake are improved, while invention further reduces material costs, improve production efficiency.
Description
Technical field
The present invention relates to a kind of power battery technology field more particularly to a kind of preparation methods of battery box cover.
Background technique
Along with the continuous development of New-energy electric vehicle, the course continuation mileage of the energy density of battery and electric car is always
It is an important factor for restricting its Rapid Popularization.Therefore, the lightweight of power battery and body of a motor car is similarly subjected to wide in industry
General concern.And the important component as power battery pack, battery case are equally continuing to develop update on material and technique.
Currently, the metallics battery case such as existing stainless steel and light aluminum alloy, equally exists many deficiencies, the most
Significant such as fire resistance rating is low, poor corrosion resistance, weight weighting, on-insulated.Therefore, in view of the above-mentioned problems, it is necessary to propose
Further solution.
Summary of the invention
The present invention is intended to provide a kind of preparation method of battery box cover and preparation method thereof, is existed in the prior art with overcoming
Deficiency.
In order to solve the above technical problems, the technical scheme is that
A kind of preparation method of battery box cover comprising following steps:
S1, continuous fiber reinforcement thermosetting resin prepreg and SMC sheet are provided；
S2, it is successively laid with prepreg, SMC layers and prepreg on mold core, obtains precast body；
S3, mold core is placed in vaccum-pumping equipment together with precast body, carries out vacuumizing pre-compacted；
S4, mold core is placed on the formpiston that preheating is completed together with the precast body of pre-compacted, and molds, solidifies；
After S5, sizing to be solidified, the product by mold core together with curing molding takes out from mold, is compressed using setting tooling
Product is cooled down.
Fiber in the improvement of preparation method as battery box cover of the invention, prepreg and SMC sheet is selected from glass
One or more of fiber, carbon fiber, basalt fibre, aramid fiber.
In the improvement of preparation method as battery box cover of the invention, the prepreg and SMC sheet, the quality of fiber
Content is 40%~75%.
The improvement of preparation method as battery box cover of the invention, the surface density of the prepreg be 150gsm~
800gsm, the SMC sheet with a thickness of 1~5mm.
The improvement of preparation method as battery box cover of the invention, the continuous fiber reinforcement thermosetting resin prepreg
In, the thermosetting resin is selected from epoxy resin, cyanate ester resin, bimaleimide resin, benzoxazine resin, phenolic aldehyde tree
One of rouge, epoxy vingl ester resin, unsaturated polyester resin.
The improvement of preparation method as battery box cover of the invention, the step S1 further include: to SMC sheet according to step
The laying of rapid S2 requires to be cut.
The improvement of preparation method as battery box cover of the invention, the material of the film core are selected from the material of the mold core
Selected from one of aluminum, steel, glass fibre, carbon fiber, basalt fibre, aramid fiber reinforced composite material.
The improvement of preparation method as battery box cover of the invention in the step S3, when vacuumizing pre-compacted, is taken out true
The empty time is 20~180s, 0.075~0.1MPa of vacuum degree.
The improvement of preparation method as battery box cover of the invention, in the step S4, the preheating temperature of formpiston is 110
DEG C~160 DEG C.
The improvement of preparation method as battery box cover of the invention, in the step S4, when molding, molding pressure is
0.6~15MPa, clamp time are 3~90min.
Compared with prior art, the beneficial effects of the present invention are: the battery box cover obtained by preparation method of the invention both
The higher mechanical property requirements of case lid are able to satisfy, while optimizing that product is apparent and air-tightness again.Compared with traditional case lid, machine
The performances such as tool, impact resistance, resistance to baked wheaten cake are improved, while invention further reduces material costs, improve production effect
Rate.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Technical program of the present invention lies in provide a kind of preparation method of battery box cover comprising following steps:
S1, continuous fiber reinforcement thermosetting resin prepreg and SMC sheet are provided, and to SMC sheet according to step S2's
Laying requires to be cut.
Wherein, the continuous fiber reinforcement thermosetting resin prepreg is a textile material, and the SMC is sheet molding compound
(Sheet Molding Compound).It is fine that fiber in prepreg and SMC sheet is selected from glass fibre, carbon fiber, basalt
One or more of dimension, aramid fiber.In the prepreg and SMC sheet, the mass content of fiber is 40%~75%.Institute
State prepreg surface density be 150gsm~800gsm, the SMC sheet with a thickness of 1~5mm.
In addition, the enhancing thermosetting resin is selected from asphalt mixtures modified by epoxy resin in the continuous fiber reinforcement thermosetting resin prepreg
Rouge, cyanate ester resin, bimaleimide resin, benzoxazine resin, phenolic resin, epoxy vingl ester resin, unsaturation are poly-
One of ester resin.
S2, it is successively laid with prepreg, SMC layers and prepreg on mold core, obtains precast body.
Wherein, the material of the mold core is selected from aluminum, steel, glass fibre, carbon fiber, basalt fibre, aramid fiber
One of composite material quality.
S3, mold core is placed in vaccum-pumping equipment together with precast body, carries out vacuumizing pre-compacted.
Wherein, when vacuumizing pre-compacted, the pumpdown time is 20~180s, 0.075~0.1MPa of vacuum degree.
S4, mold core is placed on the formpiston that preheating is completed together with the precast body of pre-compacted, and molds, solidifies.
Wherein, the preheating temperature of formpiston is 110 DEG C~160 DEG C.When molding, molding pressure is 0.6~15MPa, when molding
Between be 3~90min.
After S5, sizing to be solidified, the product by mold core together with curing molding takes out from mold, is compressed using setting tooling
Product is cooled down.
Technical solution of the present invention is illustrated below with reference to a specific embodiment:
Selection fabric surface density is 200gsm, and the alkali-free glass fiber fabric of resin content 35% enhances fast-curing epoxy resin
The epoxy group SMC sheet that base prepreg and resin content are 50%, with a thickness of 2mm.It is cut according to structure and Lay up design
State prepreg and SMC sheet, wherein two layers of Woven glass cloth prepreg, 1 layer of SMC sheet, and be located at two layers Woven glass cloth prepreg it
Between.
When laying, one layer of above-mentioned Woven glass cloth prepreg is first spread on aluminum mold core, makes prepreg and mold core good fit,
The second layer is coated with SMC sheet, and last third layer is above-mentioned Woven glass cloth prepreg.The mold core for being covered with precast body is transferred to vacuum
In equipment, 50s is vacuumized under 0.085MPa vacuum pressure.Yin, yang mould on press is preheated to 150 DEG C.Precompressed will be had
After reality on the mold core fast transfer to formpiston of precast body, and molding is quickly completed, molding pressure 2MPa, time 5min.It opens
Mold core with cured shaped article is removed from the molds using manipulator, is pressed rapidly using profiling fixture, make to produce by mould
Product are cooling, are formed.
For the battery box cover that above-described embodiment obtains, carried out by performance of one comparative example of setting to above-mentioned battery box cover
Verifying:
It is wanted it can be seen that being both able to satisfy the higher mechanical performance of case lid by the battery box cover that preparation method of the invention obtains
It asks, while optimizing that product is apparent and air-tightness again.Compared with traditional case lid, the performances such as machinery, impact resistance, resistance to baked wheaten cake are obtained
It improves, while invention further reduces material costs, improve production efficiency.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of preparation method of battery box cover, which is characterized in that the preparation method of the battery box cover includes the following steps:
S1, continuous fiber reinforcement thermosetting resin prepreg and SMC are provided；
S2, it is successively laid with prepreg, SMC layers and prepreg on mold core, obtains precast body；
S3, mold core is placed in vaccum-pumping equipment together with precast body, carries out vacuumizing pre-compacted；
S4, mold core is placed on the formpiston that preheating is completed together with the precast body of pre-compacted, and molds, solidifies；
After S5, sizing to be solidified, the product by mold core together with curing molding takes out from mold, is compressed and is produced using setting tooling
Product are cooled down.
2. the preparation method of battery box cover according to claim 1, which is characterized in that the fibre in prepreg and SMC sheet
Dimension is selected from one or more of glass fibre, carbon fiber, basalt fibre, aramid fiber.
3. the preparation method of battery box cover according to claim 2, which is characterized in that in the prepreg and SMC sheet,
The mass content of fiber is 40%~75%.
4. the preparation method of battery box cover according to claim 2, which is characterized in that the surface density of the prepreg is
150gsm~800gsm, the SMC sheet with a thickness of 1~5mm.
5. the preparation method of battery box cover according to claim 2, which is characterized in that the continuous fiber reinforcement thermosetting property
In resin prepreg material, the enhancing thermosetting resin is selected from epoxy resin, cyanate ester resin, bimaleimide resin, benzo
One of oxazines resin, phenolic resin, epoxy vingl ester resin, unsaturated polyester resin.
6. the preparation method of battery box cover according to claim 1, which is characterized in that the step S1 further include: to SMC
Sheet material requires to be cut according to the laying of step S2.
7. the preparation method of battery box cover according to claim 1, which is characterized in that the material of the mold core is selected from aluminium
One of matter, steel, glass fibre, carbon fiber, basalt fibre, aramid fiber reinforced composite material.
8. the preparation method of battery box cover according to claim 1, which is characterized in that in the step S3, vacuumize pre-
When compacting, the pumpdown time is 20~180s, 0.075~0.1MPa of vacuum degree.
9. the preparation method of battery box cover according to claim 1, which is characterized in that in the step S4, formpiston it is pre-
Hot temperature is 110 DEG C~160 DEG C.
10. the preparation method of battery box cover according to claim 1, which is characterized in that in the step S4, when molding,
Molding pressure is 0.6~15MPa, and clamp time is 3~90min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374310.4A CN109353031A (en) | 2018-11-19 | 2018-11-19 | The preparation method of battery box cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374310.4A CN109353031A (en) | 2018-11-19 | 2018-11-19 | The preparation method of battery box cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109353031A true CN109353031A (en) | 2019-02-19 |
Family
ID=65332239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374310.4A Pending CN109353031A (en) | 2018-11-19 | 2018-11-19 | The preparation method of battery box cover |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910330A (en) * | 2019-03-20 | 2019-06-21 | 上海创轲新材料科技有限公司 | A kind of manufacturing method with good apparent SMC composite material element |
| CN110181833A (en) * | 2019-05-29 | 2019-08-30 | 郝鹏翔 | A kind of lightweight prepreg battery case and preparation method thereof |
| CN111730876A (en) * | 2020-07-10 | 2020-10-02 | 苏州银禧新能源复合材料有限公司 | Forming process of upper cover of composite battery box |
| CN112157927A (en) * | 2020-09-08 | 2021-01-01 | 江苏澳盛复合材料科技有限公司 | Forming process of thermosetting material in LDS process and product thereof |
| CN112454941A (en) * | 2020-10-09 | 2021-03-09 | 许剑海 | Manufacturing process of composite material battery box |
| CN112895519A (en) * | 2021-01-20 | 2021-06-04 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Forming process of upper box body of composite power battery |
| CN113306176A (en) * | 2021-05-19 | 2021-08-27 | 重庆理工大学 | Microchannel thermoplastic composite material and preparation method thereof |
| CN113715363A (en) * | 2021-09-10 | 2021-11-30 | 安徽伯拉复合材料有限公司 | Rapid forming process for upper cover of composite material battery box |
| CN113844118A (en) * | 2020-06-26 | 2021-12-28 | 汉达精密电子(昆山)有限公司 | Thermosetting light composite material and preparation method thereof |
| CN113968050A (en) * | 2020-07-24 | 2022-01-25 | 汉达精密电子(昆山)有限公司 | Thermosetting light composite material and preparation method thereof |
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| CN106553357A (en) * | 2016-11-09 | 2017-04-05 | 江苏恒神股份有限公司 | Hollow multi-cavity abnormal shape surface composite material complex structural member integral forming technique |
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| JPS57125020A (en) * | 1981-01-28 | 1982-08-04 | Mitsubishi Electric Corp | Molding of reinforced plastics |
| JPS6270028A (en) * | 1985-09-25 | 1987-03-31 | Bridgestone Corp | Joining method of laminate resin |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109910330A (en) * | 2019-03-20 | 2019-06-21 | 上海创轲新材料科技有限公司 | A kind of manufacturing method with good apparent SMC composite material element |
| CN110181833A (en) * | 2019-05-29 | 2019-08-30 | 郝鹏翔 | A kind of lightweight prepreg battery case and preparation method thereof |
| CN113844118A (en) * | 2020-06-26 | 2021-12-28 | 汉达精密电子(昆山)有限公司 | Thermosetting light composite material and preparation method thereof |
| CN111730876A (en) * | 2020-07-10 | 2020-10-02 | 苏州银禧新能源复合材料有限公司 | Forming process of upper cover of composite battery box |
| CN113968050A (en) * | 2020-07-24 | 2022-01-25 | 汉达精密电子(昆山)有限公司 | Thermosetting light composite material and preparation method thereof |
| CN112157927A (en) * | 2020-09-08 | 2021-01-01 | 江苏澳盛复合材料科技有限公司 | Forming process of thermosetting material in LDS process and product thereof |
| 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 |
| CN112895519A (en) * | 2021-01-20 | 2021-06-04 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Forming process of upper box body of composite power battery |
| CN112895519B (en) * | 2021-01-20 | 2022-12-13 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Forming process of upper box body of composite power battery |
| CN113306176A (en) * | 2021-05-19 | 2021-08-27 | 重庆理工大学 | Microchannel thermoplastic composite material and preparation method thereof |
| CN113715363A (en) * | 2021-09-10 | 2021-11-30 | 安徽伯拉复合材料有限公司 | Rapid forming process for upper cover of composite material battery box |
| CN113715363B (en) * | 2021-09-10 | 2023-01-06 | 安徽伯拉复合材料有限公司 | Rapid forming process for upper cover of composite material battery box |
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