CN106738999A - A kind of polyaxial carbon fibre composite car battery box and its manufacture method - Google Patents
A kind of polyaxial carbon fibre composite car battery box and its manufacture method Download PDFInfo
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- CN106738999A CN106738999A CN201611128967.3A CN201611128967A CN106738999A CN 106738999 A CN106738999 A CN 106738999A CN 201611128967 A CN201611128967 A CN 201611128967A CN 106738999 A CN106738999 A CN 106738999A
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Classifications
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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
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
-
- 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
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/382—Automated fiber placement [AFP]
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Textile Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention belongs to the invention belongs to auto parts technical field, a kind of polyaxial carbon fibre composite car battery box, its material is the composite with epoxy resin as base material to be reinforcing material using the polyaxial carbon fiber warp-knitting fabric of multi-shaft warp knitting technique preparation；The polyaxial carbon fiber warp-knitting fabric includes eight layers of parallel laying being arranged in order, and the laying angle of the laying is 0 °, 45 °, 90 ° and 45 °, and each laying angle has two layings.Using 8 layers of carbon fiber multiple-axial knitted fabric as fibre reinforced materials, compared with conventional steel or high-density plastic's battery case, quality mitigates 50% to prepared battery case.Braiding process can realize mechanization global formation, and the successively placement process cumbersome compared with common laminate structures, production efficiency is higher；Possess more stable structural behaviour than laminate, while ensureing along fiber reinforcement direction excellent mechanical performance, it is not easy to lamination occur, interlayer performance is more preferable.
Description
Technical field
The invention belongs to the invention belongs to auto parts technical field, more particularly to a kind of polyaxial carbon fibre composite
Car battery box and its manufacture method.
Background technology
Automotive light weight technology as automobile now and future development an important directions, increasingly by designers'
Concern, wherein automotive light weight technology a important channel is then to use light material.Carbon fibre composite has excellent power
The features such as learning performance, low-density, gradually replaces steel to be widely used in automobile industry.In car battery box application aspect,
CN105014988 discloses the manufacture method of a kind of carbon fiber car battery box and carbon fiber car battery box, using carbon fiber
Laminate structures composite replaces steel material, while rigidity, intensity requirement is met, reduces the quality of battery case.
CN104827680 discloses protection shell of the vehicle-mounted battery of a kind of electric automobile and preparation method thereof, uses carbon fiber laminate structures
While composite replaces steel material, laminated multidirectional laying is used in laying, serve the effect of protection battery, and not
The lightweight of automobile can be influenceed.
But because fiber laminate structures laying process is cumbersome, if battery case is all using the laminated structure composite material of carbon fiber
Material, preparation time will be greatly prolonged, and reduce production efficiency, and the interlayer performance of the laminated structural composite material of fiber slightly has deficiency.
The content of the invention
It is the cumbersome defect of the carbon fiber laminate structures laying process for solving prior art presence, the present invention provides a kind of many
Axial carbon fibres composite material automobile battery case and its manufacture method.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of polyaxial carbon fibre composite
Car battery box, its material is that the polyaxial carbon fiber warp-knitting fabric prepared with utilization multi-shaft warp knitting technique is reinforcing material,
Composite with epoxy resin as base material；
The polyaxial carbon fiber warp-knitting fabric includes eight layers of parallel laying being arranged in order, the wing flapping of the laying
It is 0 °, 45 °, 90 ° and -45 ° to spend, and each laying angle has two layings.
Specifically, the carbon fiber is T300-3k carbon fibers, and stretch modulus 230GPa, tensile strength 3.53Gpa are described
Epoxy resin be NPEL-128 epoxy resin.
Preferably, described reinforcing material is 1 with base material volume ratio：1.
The manufacture method of above-mentioned polyaxial carbon fibre composite car battery box, it is characterised in that：Including following step
Suddenly：
(1) mould pretreatment：Wiped with releasing agent in die surface, be easy to the demoulding；
(2) fabric lays：Polyaxial carbon fiber warp-knitting fabric is laid in die cavity according to laying angle is smooth, is not allowed
Its fold, and pare off unnecessary leftover pieces；
(3) matched moulds：Upper mould is closed up with lower mould, peripheral sealing fastening；
(4) resin injection：Epoxy resin and curing agent are well mixed, are then injected from mould glue-feeder, fully infiltration
Polyaxial carbon fiber warp-knitting fabric；
(5) solidify：Mould is placed in into heating furnace carries out temperature control solidification；
(6) demoulding：Upper and lower mould is separated, battery case is spun off from mould and is checked that product has zero defect；
(7) post-process：Mould and glue injection equipment are cleared up with clean mould agent.
Further, step (1) is wiped more than 3 times in die surface with ingot stripper, per minor tick 15-20min, and according to
One direction wipes.
Preferably, the epoxy resin and curing agent mass ratio described in step (4) are 1：0.005~0.1, by epoxy resin
After well mixed with curing agent, 20-30min is stood.
Further, it is characterised in that：The injecting glue pressure of epoxy resin and curing agent is injected in step (4) from mould glue-feeder
Power is 0.1~0.2MPa, and injecting glue to gum outlet does not have bubble to occur, and stops injecting glue.
Preferably, the temperature control condition of cure described in step (5) is, 40~50 DEG C of temperature, hardening time is 1.5~2h.
Preferably, the clean mould agent described in step (7) is acetone.
Beneficial effect：1st, the polyaxial carbon fibre composite car battery box that the present invention is provided, more using 8 layers of carbon fiber
Axial tricot fabric as fibre reinforced materials, epoxy resin as matrix, prepared battery case compared with conventional steel or
High-density plastic's battery case, quality mitigates 50%.
2nd, the polyaxial carbon fibre composite car battery box that the present invention is provided, using multi-shaft warp knitting weaving process, compiles
The process of knitting can realize mechanization global formation, and the successively placement process cumbersome compared with common laminate structures, production efficiency is higher；
3rd, the multi-axial tricot that the present invention is provided possesses more stable structural behaviour than laminate, laminated compared with common
Structure battery box, while ensureing along fiber reinforcement direction excellent mechanical performance, it is not easy to lamination, interlayer performance occur
More preferably.
4th, the polyaxial carbon fibre composite car battery box that the present invention is provided, can be according to the knot of different automobile types battery case
Structure requirement, ply stacking angle and laying depth to reinforcing fiber carry out any adjustment, and designability is strong.
Brief description of the drawings
Fig. 1 is battery case dimensional structure diagram；
Fig. 2 is battery case reverse structure schematic；1.1 is base plate in Fig. 1 and Fig. 2, and 2.1 is waling, and 2.2 is horizontal stroke
To reinforcement.
Fig. 3 is polyaxial carbon fiber warp-knitting fabric construction schematic diagram；3.1 is 90 ° of stuffer wefts in Fig. 3, and 3.2 is 45 ° of inlaid thread
Yarn, 3.3 is -45 ° of stuffer wefts, and 3.4 is bundled yarn, and 3.5 is 0 ° of laying-in yarn.
Fig. 4 is the ply angles schematic diagram of the polyaxial carbon fiber warp-knitting fabric of embodiment 1；4.1 is 0 ° of direction paving in Fig. 4
Layer, 4.2 is 45 ° of direction layings, and 4.3 is -45 ° of direction layings, and 4.4 is 90 ° of direction layings, and 4.5 is 90 ° of direction layings, 4.6
It is -45 ° of direction layings, 4.7 is 45 ° of direction layings, and 4.8 is 0 ° of direction laying, and 4.9 is binding yarn.
Fig. 5 is the ply angles schematic diagram of the polyaxial carbon fiber warp-knitting fabric of embodiment 2；5.1 is 0 ° of direction paving in Fig. 5
Layer, 5.2 is 90 ° of direction layings, and 5.3 is -45 ° of direction layings, and 5.4 is 45 ° of direction layings, and 5.5 is 45 ° of direction layings, 5.6
It is -45 ° of direction layings, 5.7 is 90 ° of direction layings, and 5.8 is 0 ° of direction laying, and 5.9 is binding yarn.
Fig. 6 is the laminate structures fabric construction schematic diagram of embodiment 3；6.1 is 0 ° of direction laying in Fig. 6, and 6.2 is 90 ° of directions
Laying, 6.3 is -45 ° of direction layings, and 6.4 is 45 ° of direction layings, and 6.5 is 45 ° of direction layings, and 6.6 is -45 ° of direction layings,
6.7 is 90 ° of direction layings, and 6.8 is 0 ° of direction laying.
Fig. 7 is RTM system structure diagrams；7.1 is air compressor machine in Fig. 7, and 7.2 is injection machine, and 7.31 is fixing bolt,
7.32 is gum-injecting port, and 7.33 is upper mould, and 7.34 is gum outlet, and 7.35 is lower mould, and 7.4 is polyaxial assorted fibre knitted fabric,
7.5 is that resin receives bucket.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, make further detailed below in conjunction with example
Description.
Embodiment 1
In a first aspect, this example provides a kind of polyaxial carbon fibre composite car battery box (structure such as Fig. 1, Fig. 2
It is shown, including base plate 1.1, it is arranged on the waling 2.1 and cross reinforcing 2.2 of the bottom of base plate 1.1), using polyaxial
Warp knitting technology, using carbon fiber as reinforcing material, is prepared into multi-axial tricot, by RTM injection molding technologies, by resin
Infiltration multi-axial tricot aftershaping, laying is provided with 8 layers, and matrix uses epoxy resin.
The composite material automobile battery case that present example is provided, reinforcing material uses multi-shaft warp knitting structure, structure shape
Formula is as shown in Figure 3.90 ° of stuffer wefts, 3.1,45 ° of stuffer wefts 3.2, -45 ° of stuffer wefts 3.3, binding are included in multi-shaft warp knitting structure
3.4,0 ° of laying-in yarn 3.5 of yarn.
For compared to common Single Fiber enhancing laminate, multi-axial tricot structure is more stablized, mechanical property
Can more excellent, designability it is stronger.Specific performance is as follows：
(1) fiber in multi-axial tricot is in straight distribution, the performance in fabric fibre principal direction is obtained fully
Play；
(2) multi-axial tricot introduces binding yarn, and compared to laminate structures, its interlayer performance is more excellent, and structure is whole
Body performance is more preferable；
Specifically, the laying selection standard laying angle：0 °, 45 °, 90 °, -45 °, ply stacking-sequence for [0,45, -45,
90]S,Concrete structure is as shown in Figure 4：Ground floor is 0 ° of direction laying 4.1 from top to bottom, and the second layer is 45 ° of direction layings 4.2, the
Three layers of -45 ° of direction laying 4.3, the 4th layer of 90 ° of direction laying 4.4,90 ° of direction layings 4.5 of layer 5, -45 ° of directions of layer 6
Laying 4.6,45 ° of direction layings 4.7 of layer 7, the 8th layer of 0 ° of direction laying 4.8 bundlees yarn 4.9.
The second aspect of this example, there is provided a kind of polyaxial carbon fibre composite automobile batteries cartridge manufacturing method, mistake
Cheng Yuanli is as shown in fig. 7, comprises following steps：
Step (1) preparation
1.1) polyaxial carbon fiber warp-knitting fabric；Using multi-shaft warp knitting technique, by carbon fibre reinforcement according to design
Angle, ply stacking-sequence are made into required polyaxial carbon fiber warp-knitting fabric.
1.2) preparation of mould；Go through mould whether there is breakage, whether inside contains debris
1.3) RTM formers；RTM glue injection equipments 7.2 are checked, prepares the correlations such as curing agent, releasing agent, air compressor machine 7.1
Accessory.
Step (2) mould pre-treatment
Wiped 4 times with releasing agent in the inner surface of mould, mould gently moistened according to a direction, can not wiped back and forth,
Wipe interval 15 minutes each time.
Step (3) fabric lays
The polyaxial carbon fiber warp-knitting fabric 7.4 of design requirement braiding will be pressed, smooth is laid in die cavity, does not allow its pleat
Wrinkle, and pare off unnecessary leftover pieces.
Step (4) matched moulds
Upper mould 7.33 is closed up with lower mould 7.35, periphery carries out sealing fastening using fixing bolt 7.31.
Step (5) resin is injected
5.1) by epoxy resin and curing agent according to 1：0.05 ratio allotment, 25 DEG C of experimental situation temperature, it is ensured that resin
There is good mobility and wellability during injecting glue.
5.2) epoxy resin and curing agent are stirred, stands 25 minutes, exclude the air in hybrid resin glue.
5.3) air compressor machine 7.1 is set and ensures that injection pressure is 0.15MPa, resin is injected into mould from gum-injecting port 7.32, note
In gum outlet 7.34 it is observed that resin and bubble are emerged during glue；Injecting glue does not have bubble to occur up to gum outlet, glue
Fully infiltration fabric, stops injecting glue, and receiving bucket receipts 7.5 with resin by the resin out of gum outlet 7.34 collects.
Step (6) solidifies
Mould is placed in carries out temperature control solidification in heating furnace, at 40 DEG C, hardening time is 2 hours for solidification temperature control.
Step (7) demoulding
Upper and lower mould is separated after mould cooling, battery case is spun off from mould, and check that product has zero defect.
Step (8) is post-processed
Mould and RTM glue injection equipments are cleaned with acetone.
Embodiment 2
The shape of car battery box, material and the preparation method that this example is provided are substantially same as Example 1, and difference exists
In the laying of multi-axial tricot, laying angle is [0,90, -45,45]S, concrete structure is as shown in Figure 5：0 ° of side of ground floor
To laying 5.1,90 ° of direction layings 5.2 of the second layer, -45 ° of direction layings 5.3 of third layer, the 4th layer of 45 ° of direction laying 5.4,
Five layers of 45 ° of direction laying 5.5, -45 ° of direction layings 5.6 of layer 6,90 ° of direction layings 5.7 of layer 7, the 8th layer of 0 ° of direction paving
Layer 5.8.
Embodiment 3
This example is with comparing, there is provided the shape of car battery box, preparation method it is substantially same as Example 1, difference
It is that from pure carbon fiber laminate structures fabric, the carbon fiber number of plies is 8 layers, by specified angle spreading in layer manually,
Specific laying angle is [0,90, -45,45]S, concrete structure is as shown in Figure 6：0 ° of direction laying 6.1 of ground floor, 90 ° of the second layer
Direction laying 6.2, -45 ° of direction layings 6.3 of third layer, the 4th layer of 45 ° of direction laying 6.4,45 ° of direction layings 6.5 of layer 5,
- 45 ° of direction layings 6.6 of layer 6,90 ° of direction layings 6.7 of layer 7, the 8th layer of 0 ° of direction laying 6.8.
The weight and rigidity of the battery case for providing embodiment 1, embodiment 2 and embodiment 3 and simple metal respectively are carried out
Test.The center of gravity of the battery case provided in each example applies battery quality 128kg, and battery case z is to displacement for measurement.
Test result is as shown in table 1：
Contrasted by table 1 and found, the polyaxial carbon fibre composite car battery box that the embodiment of the present invention is provided
Two embodiments have rigidity higher, can guarantee that the security of automobile battery in normally travel.Compared with metal battery box,
Because the low-density of fibrous composite, gross mass have dropped 50% to polyaxial carbon fibre composite car battery box.With it is pure
Carbon fiber laminated composite battery case is compared, using multi-shaft warp knitting technique so that interlayer performance is more preferable, and polyaxial warp
Compile technique laying simple, be easy to implement mechanization, production efficiency is higher.To sum up polyaxial carbon fiber composite proposed by the present invention
The features such as material car battery box has high-strength light, high-performance, high efficiency concurrently.
Claims (9)
1. a kind of polyaxial carbon fibre composite car battery box, it is characterised in that：Its material is to utilize multi-shaft warp knitting
Polyaxial carbon fiber warp-knitting fabric prepared by technique is reinforcing material, the composite with epoxy resin as base material；
The polyaxial carbon fiber warp-knitting fabric includes eight layers of parallel laying being arranged in order, and the laying angle of the laying is
0 °, 45 °, 90 ° and -45 °, each laying angle has two layings.
2. polyaxial carbon fibre composite car battery box according to claim 1, it is characterised in that：The carbon fiber
It is T300-3k carbon fibers, stretch modulus 230GPa, tensile strength 3.53Gpa, described epoxy resin is NPEL-128 asphalt mixtures modified by epoxy resin
Fat.
3. polyaxial carbon fibre composite car battery box according to claim 1 and 2, it is characterised in that：Described
Reinforcing material is 1 with base material volume ratio：1.
4. the manufacture method of the polyaxial carbon fibre composite car battery box according to any one of claims 1 to 3, its
It is characterised by：Comprise the following steps：
(1) mould pretreatment：Wiped with releasing agent in die surface, be easy to the demoulding；
(2) fabric lays：Polyaxial carbon fiber warp-knitting fabric is laid in die cavity according to laying angle is smooth, its pleat is not allowed
Wrinkle, and pare off unnecessary leftover pieces；
(3) matched moulds：Upper mould is closed up with lower mould, peripheral sealing fastening；
(4) resin injection：Epoxy resin and curing agent are well mixed, are then injected from mould glue-feeder, fully infiltrate multiaxis
To carbon fiber warp-knitting fabric；
(5) solidify：Mould is placed in into heating furnace carries out temperature control solidification；
(6) demoulding：Upper and lower mould is separated, battery case is spun off from mould and is checked that product has zero defect；
(7) post-process：Mould and glue injection equipment are cleared up with clean mould agent.
5. the manufacture method of polyaxial carbon fibre composite car battery box according to claim 4, it is characterised in that：
Step (1) is wiped more than 3 times in die surface with ingot stripper, per minor tick 15-20min, and is wiped according to a direction.
6. the manufacture method of polyaxial carbon fibre composite car battery box according to claim 4, it is characterised in that：
Epoxy resin and curing agent mass ratio described in step (4) are 1：0.005~0.1, epoxy resin and curing agent are well mixed
Afterwards, 20-30min is stood.
7. the manufacture method of the polyaxial carbon fibre composite car battery box according to claim 4 or 6, its feature exists
In：The injection pressure for injecting epoxy resin and curing agent from mould glue-feeder in step (4) is 0.1~0.2MPa, and injecting glue is to going out
Jiao Kou does not have bubble to occur, and stops injecting glue.
8. the manufacture method of polyaxial carbon fibre composite car battery box according to claim 4, it is characterised in that：
Temperature control condition of cure described in step (5) is that 40~50 DEG C of temperature, hardening time is 1.5~2h.
9. the manufacture method of polyaxial carbon fibre composite car battery box according to claim 4, it is characterised in that：
Clean mould agent described in step (7) is acetone.
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Cited By (12)
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| CN107215066A (en) * | 2017-07-18 | 2017-09-29 | 盐城工业职业技术学院 | A kind of composite plate and preparation method thereof |
| CN109940903A (en) * | 2017-12-21 | 2019-06-28 | 宜兴市宜泰碳纤维织造有限公司 | A kind of carbon fiber composite board moulding process |
| CN110741113A (en) * | 2017-06-16 | 2020-01-31 | 奥尔巴尼工程复合材料公司 | Woven 3D fiber reinforced structure and method of making same |
| CN111300845A (en) * | 2020-03-03 | 2020-06-19 | 江苏亨睿碳纤维科技有限公司 | Full-automatic production line and production method for automobile parts made of carbon fiber composite material |
| CN111600057A (en) * | 2020-05-15 | 2020-08-28 | 郑州仿弦新材料科技有限公司 | Composite material structure battery with curved surface structure and preparation method and application thereof |
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| CN113067084A (en) * | 2021-03-15 | 2021-07-02 | 四川长虹电源有限责任公司 | Carbon fiber composite material battery shell |
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| 刘昭特: "铺层结构对复合材料层合板弯曲强度及失效行为的影响", 《工程塑料应用》 * |
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