CN107083036A - Thermosetting plastics and its manufacture method and the dynamic lithium battery group housing being made up of the plastics - Google Patents
Thermosetting plastics and its manufacture method and the dynamic lithium battery group housing being made up of the plastics Download PDFInfo
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- CN107083036A CN107083036A CN201610084486.0A CN201610084486A CN107083036A CN 107083036 A CN107083036 A CN 107083036A CN 201610084486 A CN201610084486 A CN 201610084486A CN 107083036 A CN107083036 A CN 107083036A
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- Prior art keywords
- thermosetting plastics
- base
- filler
- agent
- binomial
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- 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
Abstract
The dynamic lithium battery group housing being made the present invention relates to thermosetting plastics and its manufacture method and by the plastics, thermosetting plastics includes matrix, filler, reinforcing material and auxiliary agent, and matrix uses thermosetting resin, including unsaturated polyester resin, vinyl ester resin；Filler uses inorganic non-metallic filler, including wollastonite, barite.Manufacture method includes：(1) it is scattered at a high speed；(2) stirring mixing, kneading, dipping；(3) curing molding.Housing includes cover plate and base, and base is made up of bottom plate and side frame, and bottom plate and side frame connect into overall structure, and Split type structure is set between cover plate and base, and cover plate is connected with base.Characteristic of the present invention：1st, heat distortion temperature is more than 250 DEG C, higher than the reaction temperature of lithiumation thing；2nd, flame-resistant high-temperature-resistant, overdoes and does not cave in；3rd, it is effective against the spark discharge of battery short circuit；4th, arranged in pairs or groups by different fillers, have insulating properties and thermal conductivity concurrently, facilitate cell stack designs；Using safe and reliable.
Description
Technical field
The present invention relates to thermosetting plastics and dynamic lithium battery technical group field, especially a kind of resistant to elevated temperatures heat
Solidity plastics and its manufacture method, and the power lithium battery for electric vehicle group shell being made up of the thermosetting plastics
Body.
Background technology
At present, as the various electric car fast developments of new energy vehicle, the core component power lithium of electric car
Battery pack has plurality of installation forms.The lithium cells housing required when being combined into module, typically now all
It is made up of metal material or thermoplastic.In common nominal situation, metal and thermoplastic
Housing is operated in normal temperature range, and its performance disclosure satisfy that the requirement of electric car.But occur thing in vehicle
Therefore or during battery failure, battery is because short circuit or overload produce substantial amounts of heat energy, beyond BMS
The control range of (BATTERY MANAGEMENT SYSTEM, battery management system), BMS is
Tie between battery and user, main object is secondary cell.Dynamic lithium battery thermal energy buildup produces high temperature,
The housing of thermoplastic material, which can be melted, to cave in, and causes to support to fail, battery unit occurs with battery unit
Contact, is easily caused battery failures in chain chain reaction, causes accident further to expand, so as to produce tight
The security incident of weight.Metal shell is easily caused electric arc fan and walked, hit when battery short circuit produces spark discharge
The battery unit of bad other positions, it is in chain chain reaction to cause battery failures, causes accident to further expand
Produce severe safety accident.
The content of the invention
It is an object of the invention to provide a kind of high temperature resistant thermosetting plastics and its manufacture method, and by the thermosetting
The fire protection flame retarding dynamic lithium battery group housing that property plastics are made.
The purpose of the present invention is achieved by the following technical solution：
Thermosetting plastics, including matrix, filler, reinforcing material and auxiliary agent, described matrix use thermosetting tree
Fat, including but not limited to unsaturated polyester resin, vinyl ester resin, DAP resins, epoxy resin, phenol
Urea formaldehyde, and above-mentioned any binomial or binomial above resin composition；
The filler use inorganic non-metallic filler, including but not limited to wollastonite, barite, calcium carbonate,
Aluminium hydroxide, magnesium hydroxide, talcum, kaolin, bentonite, montmorillonite, aluminum oxide, zinc oxide, carbon
SiClx, silicon nitride, aluminium nitride, and above-mentioned any binomial or binomial above filler composition；
The reinforcing material uses reinforcing fiber, and including but not limited to glass fibre, basalt fibre, carbon is fine
Dimension, aramid fiber, high molecular weight polyethylene fiber, and above-mentioned any binomial or binomial above fiber group
Compound；
The auxiliary agent includes catalyst or initiator, releasing agent or mould release, fire retardant, shrinkage factor regulator
Or shrinking agent, and above-mentioned any binomial or binomial above auxiliary agent composition.
As the preferred technical solution of the present invention, the weight of the thermosetting plastics is as follows than being formulated：
As the preferred technical solution of the present invention, the weight of the thermosetting plastics is as follows than being formulated：
The manufacture method of thermosetting plastics, comprises the following steps：
(1) matrix resin, filler, reinforcing fiber and auxiliary agent are weighed by the proportioning of formula, be put into scattered at a high speed
It is uniformly dispersed in machine；
(2) above-mentioned matrix resin, filler, reinforcing fiber and auxiliary agent are put into mixed at high speed in mixer, so
Mediated afterwards by kneader, then carry out impregnation process, obtain thermoset plastic compound；
(3) under the conditions of defined temperature and pressure, by above-mentioned thermoset plastic compound product mould
Interior curing molding, fixes the shape of product while the mixture solidifies.
As the preferred technical solution of the present invention, the auxiliary agent in the step (1) includes catalyst, releasing agent
And fire retardant, first by the composition mixed at high speed of the catalyst and releasing agent, then fire retardant is added, mixed
Agent mixture is obtained after uniform, is then placed in high speed dispersor and is uniformly dispersed.
As the preferred technical solution of the present invention, the auxiliary agent in the step (1) include catalyst, releasing agent,
Fire retardant and shrinking agent, first by the composition mixed at high speed of catalyst, releasing agent and shrinking agent, then add
Plus fire retardant, agent mixture is obtained after being well mixed, is then placed in high speed dispersor and is uniformly dispersed.
As the preferred technical solution of the present invention, the step (1) is first by the matrix resin in formula, filler
After being weighed with reinforcing fiber by proportioning, it is uniformly dispersed in input high speed dispersor, then puts into auxiliary agent, disperses equal
Removed after even, mixing be stirred by step (2) as hybrid resin material, then mediated and dipping at
Reason, is then produced according to usual way.
The dynamic lithium battery group housing being made up of thermosetting plastics, including cover plate and base, base by bottom plate and
Side frame is constituted, and the housing is set to cuboid or square shape, the bottom plate and side frame phase of the base
Connect to form overall structure, Split type structure is set between the cover plate and base, lead between cover plate and base
Cross connecting elements interconnection；The housing provided with lithium battery group install fixed structure, wire casing, string holes and
Cooling pipe.
As the preferred technical solution of the present invention, the side frame of the base is set to overall structure, the bottom plate
Split type structure is set between side frame, is connected with each other between bottom plate and side frame by connecting elements.
As the preferred technical solution of the present invention, the side frame of the base is set to Split type structure, and side frame is by four
Block side plate is connected with each other and formed, and the wall thickness of the housing is 1-5 millimeters.
The beneficial effects of the invention are as follows：The thermosetting plastics obtained relative to prior art, the present invention
(AMM), its main characteristic is as follows：
1st, heat distortion temperature is more than 250 DEG C, higher than the reaction temperature of lithiumation thing and binding agent in lithium cells；
2nd, it is fire-retardant and high temperature or cross fire environment under do not cave in, initial shape can be kept with maintain support；
3rd, itself it is insulating materials, and arc resistance and creepage trace index are very high, are highly resistant to battery
Spark discharge when short-circuit；
4th, by the collocation of different fillers, insulating properties and thermal conductivity can be had concurrently simultaneously, facilitate integral battery door group
Design.
AMM thermosetting plasticses of the present invention can be existed by standard plastic moulding process such as compacting, transfer, injections
Heating pressurization is lower to be molded, and obtains final lithium cells housing.The present invention is done from AMM thermosetting plasticses
The housing of dynamic lithium battery group, when can effectively prevent that accident occur in indivedual dynamic lithium batteries in battery pack, is produced
High temperature causes the propagation that contacts with each other between battery, so as to avoid fault spread, is conducive to controlling the dangerous circumstances immediately,
Reduce causality loss, use is more safe and reliable.
Brief description of the drawings
Fig. 1 is the structural representation of battery housing embodiment one of the present invention.
Fig. 2 is the structural representation of battery housing embodiment two of the present invention.
Fig. 3 is the structural representation of battery housing embodiment three of the present invention.
In figure：1st, cover plate, 2, base, 3, bottom plate, 4, side frame, 5, side plate.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings：
Thermosetting plastics, including matrix, filler, reinforcing material and auxiliary agent, described matrix use thermosetting tree
Fat, including but not limited to unsaturated polyester resin, vinyl ester resin, DAP resins, epoxy resin, phenol
Urea formaldehyde, and above-mentioned any binomial or binomial above resin composition；The filler uses inorganic non-gold
Belong to filler, including but not limited to wollastonite, barite, calcium carbonate, aluminium hydroxide, magnesium hydroxide, talcum,
Kaolin, bentonite, montmorillonite, aluminum oxide, zinc oxide, carborundum, silicon nitride, aluminium nitride, and
The composition of above-mentioned any binomial or binomial above filler；The reinforcing material uses reinforcing fiber, including but
Glass fibre, basalt fibre, carbon fiber, aramid fiber, high molecular weight polyethylene fiber are not limited to, with
And the composition of above-mentioned any binomial or binomial above fiber；The auxiliary agent includes catalyst or initiator, taken off
Mould agent or mould release, fire retardant, shrinkage factor regulator or shrinking agent, and above-mentioned any binomial or binomial
The composition of above auxiliary agent.
Embodiment 1, the weight of thermosetting plastics is as follows than being formulated：
Embodiment 2, the weight of thermosetting plastics is as follows than being formulated：
The manufacture method of thermosetting plastics, comprises the following steps：
(1) matrix resin, filler, reinforcing fiber and auxiliary agent are weighed by the proportioning of formula, be put into scattered at a high speed
It is uniformly dispersed in machine；
(2) above-mentioned matrix resin, filler, reinforcing fiber and auxiliary agent are put into mixed at high speed in mixer, so
Mediated afterwards by kneader, then carry out impregnation process, obtain thermoset plastic compound；
(3) under the conditions of defined temperature and pressure, by above-mentioned thermoset plastic compound product mould
Interior curing molding, fixes the shape of product while the mixture solidifies.
Auxiliary agent in the step (1) includes catalyst, releasing agent and fire retardant, first by the catalyst and
The composition mixed at high speed of releasing agent, then fire retardant is added, agent mixture is obtained after being well mixed, then
It is put into high speed dispersor and is uniformly dispersed.
Auxiliary agent in the step (1) includes catalyst, releasing agent, fire retardant and shrinking agent, will first urge
The composition mixed at high speed of agent, releasing agent and shrinking agent, then fire retardant is added, obtained after being well mixed
Agent mixture, is then placed in high speed dispersor and is uniformly dispersed.
After the step (1) is first weighed by matrix resin, filler and the reinforcing fiber in formula by proportioning, throw
Enter in high speed dispersor and be uniformly dispersed, then put into auxiliary agent, removed after being uniformly dispersed, it is logical as hybrid resin material
Cross step (2) and be stirred mixing, then mediated and impregnation process, then carried out according to usual way
Production.
Embodiment one, as shown in figure 1, the dynamic lithium battery group housing being made up of thermosetting plastics, including lid
Plate 1 and base 2, base 2 are made up of bottom plate 3 and side frame 4, and the battery housing is set to cuboid
Or square shape, the bottom plate 3 and side frame 4 of base 2 be interconnected to form overall structure, cover plate 1 with
Split type structure is set between base 2, is connected with each other between cover plate 1 and base 2 by connecting elements.This reality
The wall thickness for applying the example housing is 1-5 millimeters, and preferably 2-4 millimeters, housing installs solid provided with lithium battery group
Determine structure, wire casing, string holes and cooling pipe.
Embodiment two, as shown in Fig. 2 the dynamic lithium battery group housing being made up of thermosetting plastics, including lid
Plate 1 and base 2, base 2 are made up of bottom plate 3 and side frame 4, the side of base 2 described in the present embodiment
Frame 4 is set to overall structure, and Split type structure, bottom plate 3 and side frame 4 are set between bottom plate 3 and side frame 4
Between be connected with each other by connecting elements.The wall thickness of housing described in the present embodiment is 1-5 millimeters, preferably 2-4
Millimeter, housing installs fixed structure, wire casing, string holes and cooling pipe provided with lithium battery group.
Embodiment three, as shown in figure 3, the dynamic lithium battery group housing being made up of thermosetting plastics, including lid
Plate 1 and base 2, base 2 are made up of bottom plate 3 and side frame 4, and the side frame 4 of the base 2 is set to
Split type structure, side frame 4 is connected with each other by four blocks of side plates 5 and formed.The wall thickness of housing described in the present embodiment is
1-5 millimeters, preferably 3-5 millimeters, housing provided with lithium battery group install fixed structure, wire casing, string holes and
Cooling pipe.
Inventive shell can take various forms, its main purposes be by multiple lithium cells (cylinder,
Soft Roll, Hard Roll) install integral using mechanical connection manner combination, in order to which whole lithium battery module is filled
It is fitted on electric car or other power devices.Above-described embodiment is only limitted to design and the technology spy of the explanation present invention
Levy, can not its object is to allow those skilled in the art to understand the technical scheme and embodiment of invention
Limit the scope of the invention accordingly.Every equivalent substitution made according to technical solution of the present invention or equivalent
Change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of thermosetting plastics, including matrix, filler, reinforcing material and auxiliary agent, it is characterized in that：It is described
Matrix uses thermosetting resin, including but not limited to unsaturated polyester resin, vinyl ester resin, DAP trees
Fat, epoxy resin, phenolic resin, and above-mentioned any binomial or binomial above resin composition；
The filler use inorganic non-metallic filler, including but not limited to wollastonite, barite, calcium carbonate,
Aluminium hydroxide, magnesium hydroxide, talcum, kaolin, bentonite, montmorillonite, aluminum oxide, zinc oxide, carbon
SiClx, silicon nitride, aluminium nitride, and above-mentioned any binomial or binomial above filler composition；
The reinforcing material uses reinforcing fiber, and including but not limited to glass fibre, basalt fibre, carbon is fine
Dimension, aramid fiber, high molecular weight polyethylene fiber, and above-mentioned any binomial or binomial above fiber group
Compound；
The auxiliary agent includes catalyst or initiator, releasing agent or mould release, fire retardant, shrinkage factor regulator
Or shrinking agent, and above-mentioned any binomial or binomial above auxiliary agent composition.
2. thermosetting plastics according to claim 1, it is characterized in that the weight ratio of the thermosetting plastics
Formula is as follows：
3. thermosetting plastics according to claim 1, it is characterized in that the weight ratio of the thermosetting plastics
Formula is as follows：
4. a kind of manufacture method of the thermosetting plastics as described in any one of claims 1 to 3, it is characterized in that institute
The method of stating comprises the following steps：
(1) matrix resin, filler, reinforcing fiber and auxiliary agent are weighed by the proportioning of formula, be put into scattered at a high speed
It is uniformly dispersed in machine；
(2) above-mentioned matrix resin, filler, reinforcing fiber and auxiliary agent are put into mixed at high speed in mixer, so
Mediated afterwards by kneader, then carry out impregnation process, obtain thermoset plastic compound；
(3) under the conditions of defined temperature and pressure, by above-mentioned thermoset plastic compound product mould
Interior curing molding, fixes the shape of product while the mixture solidifies.
5. the manufacture method of thermosetting plastics according to claim 4, it is characterized in that：The step (1)
In auxiliary agent include catalyst, releasing agent and fire retardant, it is first that the composition of the catalyst and releasing agent is high
Speed mixing, then fire retardant is added, agent mixture is obtained after being well mixed, is then placed in high speed dispersor
It is uniformly dispersed.
6. the manufacture method of thermosetting plastics according to claim 4, it is characterized in that：The step (1)
In auxiliary agent include catalyst, releasing agent, fire retardant and shrinking agent, first by catalyst, releasing agent and low
The composition mixed at high speed of contracting agent, then fire retardant is added, agent mixture is obtained after being well mixed, then
It is put into high speed dispersor and is uniformly dispersed.
7. the manufacture method of thermosetting plastics according to claim 4, it is characterized in that：The step (1)
First press after proportioning weighing, divide in input high speed dispersor by matrix resin, filler and the reinforcing fiber in formula
Dissipate uniform, then put into auxiliary agent, remove, stirred as hybrid resin material by step (2) after being uniformly dispersed
Mixing is mixed, then is mediated and impregnation process, is then produced according to usual way.
8. a kind of dynamic lithium battery group housing being made up of any one of claims 1 to 3 thermosetting plastics,
The housing includes cover plate and base, and base is made up of bottom plate and side frame, it is characterized in that：The housing is set
For cuboid or square shape, the bottom plate and side frame of the base are interconnected to form overall structure, institute
State and Split type structure is set between cover plate and base, be connected with each other between cover plate and base by connecting elements；Institute
State housing and fixed structure, wire casing, string holes and cooling pipe are installed provided with lithium battery group.
9. dynamic lithium battery group housing according to claim 8, it is characterized in that：The side of the base
Frame is set to overall structure, and Split type structure is set between the bottom plate and side frame, leads between bottom plate and side frame
Cross connecting elements interconnection.
10. dynamic lithium battery group housing according to claim 8, it is characterized in that：The side of the base
Frame is set to Split type structure, and side frame is connected with each other by four blocks of side plates and formed, and the wall thickness of the housing is 1-5 millis
Rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084486.0A CN107083036A (en) | 2016-02-12 | 2016-02-12 | Thermosetting plastics and its manufacture method and the dynamic lithium battery group housing being made up of the plastics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084486.0A CN107083036A (en) | 2016-02-12 | 2016-02-12 | Thermosetting plastics and its manufacture method and the dynamic lithium battery group housing being made up of the plastics |
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| CN107083036A true CN107083036A (en) | 2017-08-22 |
Family
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| CN201610084486.0A Pending CN107083036A (en) | 2016-02-12 | 2016-02-12 | Thermosetting plastics and its manufacture method and the dynamic lithium battery group housing being made up of the plastics |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727854A (en) * | 2018-03-28 | 2018-11-02 | 台州市金宇机电有限公司 | A kind of corrosion resistant nonmetallic composition of high mechanical properties and the end cap containing the composition |
| CN108847458A (en) * | 2018-07-12 | 2018-11-20 | 深圳市景正电子技术开发有限公司 | A kind of insulating part structure and its preparation process |
| CN108864672A (en) * | 2018-07-30 | 2018-11-23 | 安徽耀达电机有限公司 | A kind of nonmetallic motor housing production method |
| CN109166987A (en) * | 2018-07-18 | 2019-01-08 | 苏州菲丽丝智能科技有限公司 | A kind of new energy car battery pack housing and its manufacturing method |
| CN109935751A (en) * | 2018-11-23 | 2019-06-25 | 万向一二三股份公司 | Fixed panel of a kind of battery modules and preparation method thereof |
| CN110815993A (en) * | 2018-08-09 | 2020-02-21 | 宁德时代新能源科技股份有限公司 | Battery protective layer, preparation method and application of battery protective layer in battery assembly |
| FR3087948A1 (en) * | 2018-10-30 | 2020-05-01 | Arianegroup Sas | BATTERY COMPRISING A RETENTION LAYER OF COMPOSITE MATERIAL |
| CN112812294A (en) * | 2021-01-04 | 2021-05-18 | 株洲时代新材料科技股份有限公司 | Meta-aramid resin for fibrid, aramid paper and synthetic method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109166987A (en) * | 2018-07-18 | 2019-01-08 | 苏州菲丽丝智能科技有限公司 | A kind of new energy car battery pack housing and its manufacturing method |
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| CN110815993A (en) * | 2018-08-09 | 2020-02-21 | 宁德时代新能源科技股份有限公司 | Battery protective layer, preparation method and application of battery protective layer in battery assembly |
| CN110815993B (en) * | 2018-08-09 | 2021-11-09 | 宁德时代新能源科技股份有限公司 | Battery protective layer, preparation method and application of battery protective layer in battery assembly |
| FR3087948A1 (en) * | 2018-10-30 | 2020-05-01 | Arianegroup Sas | BATTERY COMPRISING A RETENTION LAYER OF COMPOSITE MATERIAL |
| CN109935751A (en) * | 2018-11-23 | 2019-06-25 | 万向一二三股份公司 | Fixed panel of a kind of battery modules and preparation method thereof |
| CN112812294A (en) * | 2021-01-04 | 2021-05-18 | 株洲时代新材料科技股份有限公司 | Meta-aramid resin for fibrid, aramid paper and synthetic method |
| CN112812294B (en) * | 2021-01-04 | 2022-06-03 | 株洲时代新材料科技股份有限公司 | Meta-aramid resin for fibrid, aramid paper and synthetic method |
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