WO2022090349A1 - Batterieschale aufweisend ein verstärkungsvlies, herstellverfahren und traktionsbatterie - Google Patents
Batterieschale aufweisend ein verstärkungsvlies, herstellverfahren und traktionsbatterie Download PDFInfo
- Publication number
- WO2022090349A1 WO2022090349A1 PCT/EP2021/079894 EP2021079894W WO2022090349A1 WO 2022090349 A1 WO2022090349 A1 WO 2022090349A1 EP 2021079894 W EP2021079894 W EP 2021079894W WO 2022090349 A1 WO2022090349 A1 WO 2022090349A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery
- battery shell
- shell
- battery tray
- tray
- Prior art date
Links
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
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- 229920000642 polymer Polymers 0.000 claims abstract description 22
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 238000000465 moulding Methods 0.000 claims description 33
- 238000003825 pressing Methods 0.000 claims description 30
- 150000001875 compounds Chemical class 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 23
- 239000012815 thermoplastic material Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
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- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
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- 238000013461 design Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
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- 238000001816 cooling Methods 0.000 description 1
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- 230000008025 crystallization Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 229920002521 macromolecule Polymers 0.000 description 1
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- 238000003303 reheating Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
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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
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
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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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
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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
- B29C70/54—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
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- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
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- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
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- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
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- 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
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
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- 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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- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- Battery shell having a reinforcing fleece, manufacturing method and traction battery
- the invention relates to a battery shell having a reinforcing fleece, a manufacturing method and a traction battery.
- a battery in particular a traction battery for storing energy in a motor vehicle, consists of a large number of components.
- a battery housing having at least one battery shell has the task, among other things, of fastening and protecting battery modules and other required components.
- the battery housing In the case of flat battery housings, in particular battery housings for use in electric vehicles, the battery housing is required to store the high mass of the battery modules safely and robustly at comparatively high acceleration values, which is why today's battery housings have a comparatively high mass.
- Battery trays made of plastic are known in various designs in the prior art.
- the object of the invention is to provide an improvement or an alternative to the prior art.
- the task is solved by a battery shell, in particular a battery shell of a traction battery, the battery shell having a base and side walls, the battery shell having an inside and an outside, the battery shell having a reinforcing fleece made of long-cut fibers and a polymer matrix.
- a “traction battery” is understood as meaning an energy storage device, in particular an energy storage device for electrical power.
- a traction battery is preferably suitable for installation in and for driving electric cars.
- a traction battery is preferably suitable for use in a battery-electric Motor vehicle and / or a motor vehicle with battery-electric drive and internal combustion engine suitable.
- a “battery shell” is understood to mean a housing component of a battery, in particular a traction battery.
- a battery shell is set up to accommodate components of a battery and accordingly has a receiving space for accommodating components, so that they can be protected from external influences by the battery shell and/or at least indirectly secured in the battery shell.
- a battery shell is preferably understood to mean a lower battery shell or an upper battery shell, with the lower battery shell and upper battery shell preferably together forming the essential components of the housing of a traction battery.
- a "reinforcing nonwoven” is understood to mean a structure made of fibers of limited length, which have been joined and connected to form a fiber layer with irregular orientation, with a reinforcing nonwoven being designed to reinforce a component made of a fiber-plastic composite.
- a reinforcing fleece in a crystallized polymer matrix can increase the rigidity and puncture resistance of a fiber-plastic composite component.
- a "long-cut fiber” is understood to mean a fiber of limited length with a length greater than or equal to 0.5 mm. Fibers with a length of less than 0.5 mm are referred to as short-cut fibers.
- a “polymer matrix” is understood to be a plastic that contains the reinforcing fleece surrounds, with the fibers of the reinforcing fleece being bonded to the polymer matrix by means of adhesive interaction.
- a battery shell is proposed here as a fiber-plastic composite component, with the fiber portion having a reinforcing fleece or consisting of a reinforcing fleece.
- a reinforcing fleece enables a battery shell with a high level of rigidity at a comparatively low weight. Furthermore, a particularly good puncture resistance of the battery shell can be achieved by means of a reinforcing fleece.
- a pressing process is preferably used in the manufacture of the battery shell proposed here.
- the pressing process enables distribution of a molten molding compound for molding the battery shell in complex geometries, in particular in typical geometries of battery shells.
- the reinforcing fleece proposed here is a structure made of long-cut fibers with irregular orientation, which are connected to one another by means of adhesion in the midst of a crystalline and/or molten polymer matrix. This enables the molten molding compound to be distributed in the pressing tool together with the long-cut fibers it contains. As soon as the molding compound solidifies in the pressing tool, it binds the long-cut fibers, resulting in a battery shell that has a comparatively homogeneously distributed reinforcing fleece with a comparatively homogeneous fiber volume fraction.
- a battery shell can thus advantageously be achieved which, despite the irregular orientation of the long-cut fibers within the reinforcing fleece, has comparatively homogeneous material properties.
- the height of a side wall viewed in the direction normal to the bottom of the battery shell, is greater than 50 mm, preferably greater than 80 mm, more preferably greater than 110 mm and particularly preferably greater than 140 mm.
- the battery shell is particularly preferably formed monolithically, as a result of which the battery shell is produced in a single, seamless component.
- the long cut fibers have a length between 0.5 mm and 20 mm, preferably a length between 1.0 mm and 15 mm and preferably a length between 1.0 mm and 10 mm.
- the long-cut fibers have a length of between 0.5 mm and 20 mm, it being possible for the length of the individual fibers to be distributed essentially the same or differently.
- particularly homogeneous material properties having a comparatively high tensile strength can advantageously be achieved in this way in the comparatively complex component geometry of a battery shell.
- the battery shell expediently has a fiber volume fraction of greater than or equal to 20%, preferably a fiber volume fraction of greater than or equal to 30% and particularly preferably a fiber volume fraction of greater than or equal to 40%.
- Fiber volume fraction the ratio of the volume of the fibers to the total volume of a fiber-reinforced material.
- the battery shell preferably has a fiber volume fraction of greater than or equal to 45%, preferably a fiber volume fraction of greater than or equal to 50% and particularly preferably a fiber volume fraction of greater than or equal to 55%.
- the battery shell preferably has a fiber volume fraction of greater than or equal to 60%, preferably a fiber volume fraction of greater than or equal to 70% and particularly preferably a fiber volume fraction of greater than or equal to 80%.
- Good distributability of the molding compound can advantageously be achieved through the range of fiber volume fraction proposed here, as a result of which the material properties of the battery shell are particularly homogeneous with a comparatively high tensile strength at the same time.
- the polymer matrix consists of a thermoplastic material, in particular of polypropylene, PA6 or PA6.6.
- a "plastic” is understood to mean a material that mainly consists of macromolecules.
- a plastic is preferably a thermoplastic, with a thermoplastic being able to be deformed in a material-dependent temperature range, with this process being reversible and being able to be repeated as often as desired by cooling and reheating to the molten state.
- thermoplastic material is preferably understood to mean a polyamide 6 (PA6) or a polyamide 6.6 (PA6.6).
- a particularly rigid battery shell which comprises a thermoplastic material and which in particular has a high modulus of elasticity and/or a high degree of crystallization.
- the polymer matrix consists of a duroplastic material, as a result of which a particularly hard and strong battery shell can be achieved.
- the long-cut fibers preferably have a glass fiber and/or a carbon fiber and/or an aramid fiber.
- the long-cut fibers consist of one fiber material or are mixed from several different fiber materials. Because the material properties of Glass fibre, carbon fiber and/or aramid fiber are different, the selection of the fibers and/or the composition of the fibers can be optimally adapted to the individual needs of the battery shell.
- the battery shell has a metal insert for fastening the battery shell, in particular a metal insert having an internal thread.
- a “metal insert” is understood to mean a body made of metal, which is set up as a connecting means for fastening the battery shell.
- a metal insert preferably has an internal thread and/or a profile on its outside.
- the internal thread is designed to be able to produce a screw connection in interaction with a corresponding screw.
- the profiling on the outside is designed to be able to form a positive fit with the plastic of the battery shell surrounding the metal insert, so that forces can be better transmitted between the battery shell and the metal insert.
- the metal insert is particularly preferably a helicoil, which is also preferably formed as a spring thread.
- a helicoil can preferably be inserted into the cavity before the battery shell is formed and molded in by the molding compound when the battery shell is formed.
- a robust and resilient connection between the battery shell and its surroundings can advantageously be achieved through the metal insert, in particular with the body of a designated motor vehicle and/or an adjacent battery shell.
- At least one side wall of the battery tray has a different height.
- a battery housing is particularly robust and resistant to external loads if at least one side wall of the battery shell has a height that differs from the height of a different side wall.
- a battery housing can consist of two battery shells, each of which has a side wall with a height that differs from the opposite side wall, so that there is a parting plane that is offset at an angle compared to the respective bottoms of the battery shells.
- a loaded battery housing behaves particularly advantageously if a parting plane runs between the two battery shells that is slightly offset at an angle with respect to the respective bottoms of the battery shells.
- a battery tray preferably has a connecting means for the designated surrounding shell of a designated motor vehicle on both the side wall with the different height compared to the opposite side wall and the opposite side wall, particularly preferably in the immediate vicinity of the designated parting plane. In this way, it can advantageously be achieved that the loads from the battery tray can be transferred particularly advantageously to the designated surrounding shell and the loads from the designated surrounding shell to the battery shell in each case.
- load introduction by means of a connecting element in the vicinity of the parting plane of a battery shell, in particular in the vicinity of a parting plane that is angularly offset relative to the bottom of the battery shell, is particularly advantageous, so that a particularly light battery shell can be achieved.
- a battery shell is proposed here that has two side walls with a constant but different height and two side walls that have a diagonal height level, so that the height level between the two side walls with a constant but different height is compensated by means of the side walls with the diagonal height level can be .
- This makes it possible to achieve a battery housing with a parting plane that is slightly offset at an angle with respect to the respective bottoms of the battery shells.
- the battery shell proposed here has side walls with a different height.
- the different heights of the side walls are preferably set up so that the battery tray can be placed on the asymmetrically arranged body of the designated motor vehicle by means of a collar running along the upper edge of a side wall and can also be attached to it, preferably at least indirectly, by means of the collar or collars.
- horizontal forces occurring during operation of the designated motor vehicle can thus be ideally introduced into the battery tray proposed here.
- the task is solved by a method for producing a battery shell, in particular a battery shell according to the first aspect of the invention, the method comprising the following steps: a) Forming the battery shell from a preform having a reinforcing fleece made of long-cut fibers and a polymer matrix by means of a pressing tool, in particular by means of a plunge edge tool, having a cavity; and b ) demolding the battery tray .
- a “preform” is understood to mean a preformed molding compound having a polymer matrix and a reinforcing fleece surrounded by the polymer matrix.
- the polymer matrix preferably consists of a thermoplastic material, in particular polypropylene, PA 6 or PA 6 . 6 .
- Compression molding is a manufacturing process for processing thermoplastic or duroplastic plastics into a molded part in which a "pressing tool", in particular in the design of a plunge edge tool, is used.
- the tool has a matrix and a core, which are set up to create a cavity to form an article.
- the cavity can be opened and closed by a relative movement between the die and the core.
- the molding compound in particular in the form of a preform, is introduced into the cavity of the tool.
- the tool is preferably tempered.
- the cavity is then closed using a plunger.
- the pressure gives the molding compound the shape specified by the mold cavity.
- a "plunging edge tool” is understood to mean a pressing tool which has at least partially circumferential ledges to guide the core and/or to seal the cavity.
- the ledges are preferably designed in the form of replaceable ledges.
- a plunger edge tool in particular a plunger edge tool with a variable volume, can be used to produce a battery shell whose burr, if it has one, points in the direction of the tool stroke.
- a method for producing a battery shell is proposed here, in which a preform is formed into a battery shell within a pressing tool. After shaping, the polymer matrix crystallizes and the solidified battery shell can be removed after opening the pressing tool.
- the preform used consists of a molding composition which has a polymer matrix and a reinforcing fleece made of long-cut fibers that are oriented unevenly within the molding composition.
- the cavity has the negative shape of a battery shell according to the manufacturing process proposed here, a battery shell can be formed in this way. Due to the comparatively homogeneous distribution of the molding compound, the finished battery shell also has comparatively homogeneous material properties.
- Adequate compaction of the molding compound is achieved by achieving the required internal mold pressure, which can support a robust structure of the reinforcing fleece.
- a large number of battery shells can be produced as a fiber-plastic composite component with comparatively homogeneous material properties at high cycle rates and thus at comparatively low costs.
- a plunge edge tool also makes it possible to use the method proposed here to form a battery shell that has no burr or only a minimal burr, as a result of which any reworking that may be necessary can be avoided or reduced.
- a molding compound for the preform is preferably produced by mixing, in particular by means of an extruder, a melted polymer, in particular a melted thermoplastic
- Plastics provided with long cut fibers. The following is explained conceptually:
- a “molding compound” is understood as meaning a mixture of long-cut fibers and a polymer matrix, the long-cut fibers already being surrounded by the polymer matrix and the long-cut fibers already being combined to form a fiber material with irregular orientation and connected to one another by means of the polymer matrix and by adhesive interaction .
- the molding composition is obtained by mixing a melt stream of polymer material and long-cut fibers with one another in a second extruder.
- the irregular orientation of the long-cut fibers within the molding compound, which is used for the formation of the reinforcing non-woven, also occurs within the second extruder.
- a polymer material is melted, optionally homogenized and provided as a melt stream, which is mixed together with the long-cut fibers in the second extruder to form the molding compound.
- the molding composition is processed in a single extruder which has two sections.
- the polymer material is melted and optionally homogenized.
- the long-cut fibers are then fed to the melt flow at the beginning of the subsequent second section, are conveyed by the extruder and the melt flow already present therein, are mixed with the melt flow by the extruder and the molding compound is homogenized.
- the preform is formed using an extruder nozzle before the battery shell is formed; and/or introduced into the pressing tool, in particular the dipping edge tool.
- the preform be shaped from the molding compound by means of an extruder nozzle, with the preform being introduced directly from the extruder nozzle into the open pressing tool.
- the extruder nozzle can be guided over the opened pressing tool by a suitable mechanism, preferably by means of a manipulator, during the shaping of the preform, whereby the shaped preform is placed in the pressing tool simultaneously with the shaping.
- the preform is first shaped by a stationary extruder nozzle and then transferred to the opened pressing tool. This can preferably be done manually or by means of a manipulator.
- the extruder die is a slot die.
- an essentially rectangular preform can advantageously be formed, which can be brought into the pressing tool with simple means or can also be deposited in the pressing tool by means of a movable extruder nozzle.
- the cavity of the pressing tool in particular the plunge edge tool, preferably has a variable volume.
- the following is explained conceptually:
- the pressing tool in particular the plunge edge tool
- the pressing tool has a "variable volume”
- the material thickness of the battery shell depends on the amount of molding compound introduced into the pressing tool.
- the amount of molding compound used for a battery shell can advantageously be measured in a wider tolerance range in comparison to a pressing tool without a variable volume.
- a pressing tool in particular a plunge edge tool, with a variable volume enables filigree details of the battery shell to be formed without running the risk of overfilling and/or underfilling the tool.
- an insert is placed in the cavity before the battery shell is formed.
- An “insert” is understood to mean a preformed part which is introduced into the cavity of the mold next to the preform and is shaped together with the preform to form an article.
- An insert is preferably a metal insert which is bonded to the molding compound by adhesive interaction.
- An insert is preferably a plastic component which is connected to the molding compound by adhesion and/or mixing.
- a metal insert for fastening the battery shell in particular a metal insert having an internal thread, is particularly expediently introduced into the cavity; in particular, the metal insert is brought into an operative connection with a holding device in the cavity.
- a “holding device” is understood to mean any device inside the cavity which is set up to fix the metal insert while the battery shell is being formed, so that it can be arranged in the exact position in the formed battery shell.
- a connection means is preferably set up to be able to connect a component and/or another add-on part for the designated traction battery to the battery shell inside the battery shell.
- a connection means is preferably set up to connect the battery shell to its surroundings, in particular to a designated motor vehicle.
- the metal insert is preferably a helicoil insert, which is preferably designed as a spring thread. This can be inserted into the cavity before the battery shell is formed, so that it can be molded in by the molding compound when the battery shell is formed.
- the task is solved by a battery tray, in particular a battery tray of a traction battery, the battery tray having a bottom and side walls, the battery tray having an inside and an outside, the battery tray being produced using a method according to the second aspect of the invention has been .
- a traction battery in particular a traction battery for a motor vehicle, having a battery shell according to the first solves the problem
- FIG. 1 schematically a section of a battery shell
- FIG. 2 schematically shows a section of a battery shell in a section of a pressing tool with standard separation
- FIG. 3 schematically a section of a battery shell in a section of a plunge edge tool.
- the battery shell 100 in FIG. 1 consists of a monolithic thermoplastic material (not labeled) that encloses a reinforcing fleece (not shown).
- the battery shell 100 has a base 102 , at least one side wall 104 and a peripheral collar 120 .
- the battery shell 100 has an inner stiffening element 140 for stiffening the battery shell 100, which is also formed monolithically with the battery shell 100 and thus also has a reinforcing fleece (not shown).
- the inner reinforcement element 140 has reinforcement ribs 141 on both sides (only visible on one side), which additionally reinforce the battery shell 100 and also have a reinforcing fleece (not shown).
- the collar 120 also has a reinforcing fleece (not shown) on the inside.
- the collar 120 of the battery tray 100 also has at least one metal insert 110 by means of which the battery tray 100 can be attached and/or connected to a different battery tray (not shown) to form a battery housing (not shown).
- the bottom 102 of the battery tray 100 also has at least one metal insert 110 by means of which designated components (not shown) in the battery tray 100 can be connected.
- FIG. 2 shows a section of a battery shell 100 in a section of a multi-part pressing tool with standard separation ( 160 ). As can be seen, any ridge 150 of the battery tray 100 extends into the parting plane (not numbered) of the standard parting die (160).
- FIG. 3 shows a section of a battery shell 100 in a section of a multi-part plunge edge tool (170).
- any ridge 150 of the battery tray 100 extends in the direction (not labeled) in which the plunge edge tool (170) can be opened and closed.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023526404A JP2023547248A (ja) | 2020-10-29 | 2021-10-27 | 補強用不織布を有するバッテリシェル、製造方法及び駆動用バッテリ |
EP21802623.5A EP4238168A1 (de) | 2020-10-29 | 2021-10-27 | Batterieschale aufweisend ein verstärkungsvlies, herstellverfahren und traktionsbatterie |
US18/034,497 US20240063480A1 (en) | 2020-10-29 | 2021-10-27 | Battery shell comprising a reinforcing nonwoven, method of production and traction battery |
CN202180071797.2A CN116491017A (zh) | 2020-10-29 | 2021-10-27 | 具有加固纤维网的电池外壳、制造方法以及牵引电池 |
Applications Claiming Priority (2)
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DE102020128528.0 | 2020-10-29 | ||
DE102020128528.0A DE102020128528A1 (de) | 2020-10-29 | 2020-10-29 | Batterieschale aufweisend ein Verstärkungsvlies, Herstellverfahren und Traktionsbatterie |
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WO2022090349A1 true WO2022090349A1 (de) | 2022-05-05 |
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PCT/EP2021/079894 WO2022090349A1 (de) | 2020-10-29 | 2021-10-27 | Batterieschale aufweisend ein verstärkungsvlies, herstellverfahren und traktionsbatterie |
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US (1) | US20240063480A1 (de) |
EP (1) | EP4238168A1 (de) |
JP (1) | JP2023547248A (de) |
CN (1) | CN116491017A (de) |
DE (1) | DE102020128528A1 (de) |
WO (1) | WO2022090349A1 (de) |
Citations (4)
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DE102012213308A1 (de) * | 2012-03-23 | 2013-09-26 | Hyundai Motor Company | Batteriepackgehäuseanordnung für Elektro- und Hybridfahrzeuge unter Verwendung eines Kunststoffverbundwerkstoffes und Verfahren zum Herstellen desselben |
DE202014002557U1 (de) * | 2014-03-22 | 2015-06-30 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Heckbodenmodul zur Anordnung an einer Kraftfahrzeugkarosserie |
EP2940065A1 (de) * | 2012-12-26 | 2015-11-04 | Toray Industries, Inc. | Faserverstärkte harzfolie, integriertes geformtes produkt und verfahren zur herstellung davon |
WO2020080412A1 (ja) * | 2018-10-19 | 2020-04-23 | ジャパンコンポジット株式会社 | 不飽和ポリエステル樹脂組成物、成形材料、成形品、および、電動車両のバッテリーパック筐体 |
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DE102006048291A1 (de) | 2006-08-22 | 2008-02-28 | Daimler Ag | Tragwanne für einen Lastkraftwagen |
DE102010013131A1 (de) | 2009-12-21 | 2011-06-22 | REHAU AG + Co., 95111 | Verfahren zur Herstellung von endlosfaserverstärkten Formteilen aus thermoplastischem Kunststoff sowie Kraftfahrzeugformteil |
DE102011052513A1 (de) | 2011-08-09 | 2013-02-14 | Rehau Ag + Co. | Batteriegehäuseteil zur Aufnahme einer Traktionsbatterie eines Elektrofahrzeugs und Verfahren zur Herstellung des Batteriegehäuseteils |
DE202012104339U1 (de) | 2012-11-12 | 2014-02-14 | Rehau Ag + Co | Batteriegehäuseteil und Batteriegehäuse für eine Traktionsbatterie eines Elektrofahrzeugs |
DE102012112063A1 (de) | 2012-12-11 | 2014-06-12 | Rehau Ag + Co. | Batteriegehäuseteil für ein Batteriegehäuse einer Traktionsbatterie eines Elektrofahrzeugs und Verfahren zur Herstellung eines derartigen Batteriegehäuseteils |
DE102013210094A1 (de) | 2013-04-12 | 2014-10-16 | Behr Gmbh & Co. Kg | Wärmeübertragerbauteil |
DE102015203952A1 (de) | 2014-12-19 | 2016-06-23 | Volkswagen Aktiengesellschaft | Batteriegehäuseteil für eine Traktionsbatterie eines Elektro- oder Hybridfahrzeugs und Batteriegehäuse |
DE102017213434A1 (de) | 2017-08-02 | 2019-02-07 | Volkswagen Aktiengesellschaft | Batteriekomponente und Verfahren zur Herstellung derselben |
DE102017219240A1 (de) | 2017-10-26 | 2019-05-02 | Robert Bosch Gmbh | Zellengehäuse für eine Batteriezelle und Batteriezelle |
-
2020
- 2020-10-29 DE DE102020128528.0A patent/DE102020128528A1/de active Pending
-
2021
- 2021-10-27 US US18/034,497 patent/US20240063480A1/en active Pending
- 2021-10-27 EP EP21802623.5A patent/EP4238168A1/de active Pending
- 2021-10-27 WO PCT/EP2021/079894 patent/WO2022090349A1/de active Application Filing
- 2021-10-27 JP JP2023526404A patent/JP2023547248A/ja active Pending
- 2021-10-27 CN CN202180071797.2A patent/CN116491017A/zh active Pending
Patent Citations (5)
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DE102012213308A1 (de) * | 2012-03-23 | 2013-09-26 | Hyundai Motor Company | Batteriepackgehäuseanordnung für Elektro- und Hybridfahrzeuge unter Verwendung eines Kunststoffverbundwerkstoffes und Verfahren zum Herstellen desselben |
EP2940065A1 (de) * | 2012-12-26 | 2015-11-04 | Toray Industries, Inc. | Faserverstärkte harzfolie, integriertes geformtes produkt und verfahren zur herstellung davon |
DE202014002557U1 (de) * | 2014-03-22 | 2015-06-30 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Heckbodenmodul zur Anordnung an einer Kraftfahrzeugkarosserie |
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US20210380801A1 (en) * | 2018-10-19 | 2021-12-09 | Japan Composite Co., Ltd. | Unsaturated polyester resin composition, molding material, molded article, and battery pack housing for electric vehicles |
Also Published As
Publication number | Publication date |
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EP4238168A1 (de) | 2023-09-06 |
US20240063480A1 (en) | 2024-02-22 |
JP2023547248A (ja) | 2023-11-09 |
CN116491017A (zh) | 2023-07-25 |
DE102020128528A1 (de) | 2022-05-05 |
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