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EP3874548A1 - Élément plaque pour module de batterie et module de batterie - Google Patents

Élément plaque pour module de batterie et module de batterie

Info

Publication number
EP3874548A1
EP3874548A1 EP19798215.0A EP19798215A EP3874548A1 EP 3874548 A1 EP3874548 A1 EP 3874548A1 EP 19798215 A EP19798215 A EP 19798215A EP 3874548 A1 EP3874548 A1 EP 3874548A1
Authority
EP
European Patent Office
Prior art keywords
plate element
base body
plate
organic sheet
rib structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19798215.0A
Other languages
German (de)
English (en)
Inventor
Hartmut Wolf
Weiwei Zhao
Holger FIELON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kautex Textron GmbH and Co KG
Original Assignee
Kautex Textron GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kautex Textron GmbH and Co KG filed Critical Kautex Textron GmbH and Co KG
Publication of EP3874548A1 publication Critical patent/EP3874548A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • 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
    • 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
    • H01M50/227—Organic material
    • 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
    • H01M50/231—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 having a layered 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a plate element for a
  • Battery module for holding the battery cells of the
  • the invention further relates to a
  • Battery module for arrangement in a battery housing.
  • Battery module also called end plates, can be arranged by accommodating the battery cells between the two plate elements. Such a battery module can then in a battery housing of a battery, for example a battery for driving a hybrid vehicle or
  • the plate elements have the task, among other things, of a battery module and thus the battery cells
  • the plate elements can accommodate dynamic load conditions.
  • the invention is therefore based on the object
  • the plate element according to the invention is characterized in that it has a first plate element part and a second plate element part, the first
  • the first plate element part has a first base body and a first organic sheet arranged on the first base body, and wherein the second
  • Plate element part has a second base body and a second organic sheet arranged on the second base body.
  • the plate element according to the invention is now no longer formed in one piece, but instead has a sandwich structure in which several layers of material are stacked on top of one another.
  • the plate element is made of two
  • Plate element parts are first connected to each other to form the plate element. In the connected state, the plate element parts preferably abut one another with their longitudinal side surfaces. Both plate element parts each have a base body and an organic sheet arranged on the base body. The organic sheets each have Fiber fabric or a non-woven fabric, which in a
  • thermoplastic plastic matrix are embedded.
  • the organic sheet preferably has carbon fibers which are embedded in a thermoplastic plastic matrix.
  • the thermoplastic plastic matrix of the organic sheet can be formed, for example, from polyamide, in particular from polyamide 6.
  • the organic sheet preferably lies flat on the base body.
  • the first plate element part and the second plate element part are preferably connected to one another in such a way that the first organic plate forms at least a partial area of a first outer surface of the plate element and the second organic plate forms at least a partial area of a second outer surface of the plate element opposite the first outer surface.
  • the organic sheets are thus preferably arranged on the outside of the plate element, so that the
  • Organic sheets can have a particularly good stabilizing effect on the plate element. Due to the arrangement of the organic sheets on the outside, particularly good bending strength of the plate element can be achieved. In the connected state, the base bodies of the two plate element parts then preferably lie flat against one another.
  • the first base body and / or the second base body can be made from one
  • thermoplastic material can for example be a polyamide, in particular a polyamide 6.
  • the first base body and the second base body are preferably formed from a thermoplastic material. The first base body and the second are then particularly preferred
  • the first base body and / or the second base body can be produced in an injection molding process and thus a
  • the first thermoplastic material is thermoplastic material
  • the base body and / or the thermoplastic material of the second base body can have a fiber reinforcement.
  • the fiber reinforcement can be formed in that
  • Fibers preferably short fibers, are embedded in the thermoplastic material of the base body.
  • glass fibers can be used for fiber reinforcement. Due to the fiber reinforcement, the strength and
  • the first base body and / or the second base body has a rib structure.
  • the rib structure preferably has both transverse and longitudinal ribs.
  • the rib structure extends
  • the rib structure is preferably formed on the longitudinal side surface of the respective base body, which is opposite to the longitudinal side surface of the
  • Organic sheet is arranged so that the organic sheet on a first longitudinal side surface and the rib structure on a second opposite the first longitudinal side surface
  • the rib structure is preferably in one piece with the
  • the first base body and the second base body each have a rib structure, wherein ribs of the rib structure of the first base body can be connected to ribs of the rib structure of the second base body to form the connection of the first plate element part to the second plate element part. If both base bodies have a rib structure, the two plate element parts are thus preferably connected via the
  • One rib of the rib structure of the first base body is preferably connected to one rib of the rib structure of the second base body.
  • Rib structure preferably have the same wall thickness.
  • the first plate element part is with the second
  • Plate element part preferably integrally connected.
  • the integral connection can be formed, for example, by means of a welded connection.
  • the welded connection can be formed, for example, by means of an infrared welding process. If the first base body and the second base body each have a rib structure, it is preferably provided that the ribs of the rib structure of the first base body are welded to the ribs of the rib structure of the second base body.
  • Base body is a fixed, in particular permanent connection.
  • the first base body is molded onto the first organic sheet and / or that the second base body is molded onto the second organic sheet.
  • Organic sheet can be reached on the base body.
  • Functional elements or functional areas can preferably be integrated into the plate element.
  • At least one tensioning strap guide can be integrated in the plate element, in which a tensioning strap of a battery module can be guided. It can preferably be provided that on the first
  • Organic sheet or on the second organic sheet at least one strap guide in the form of a groove-shaped recess
  • the tensioning band guide is preferably formed on the organic sheet which, when the plate element is installed, is arranged in the battery module on an outwardly facing side of the battery module.
  • Tensioning strap can be in the groove-shaped recess of the
  • Tensioning strap guide must be positioned so that the tensioning strap cannot slip.
  • Two or more tension band guides are preferably formed on the first or second organic sheet, the tension band guides preferably each running parallel to one another
  • the main direction of stress is preferably that
  • Organo sheet on a strap guide at least 70% of the fibers are preferably aligned in the same direction as the groove-shaped recess of the strap guide. This can also be used, in particular, in the area of the strap guide
  • Rib structure of the first base body and / or the number of ribs of the rib structure of the second base body can be increased.
  • the density of the ribs of a rib structure can thus be higher in the area of the tension band guide than in the remaining area of the respective base body.
  • Injection molding process of the first main body and / or the second main body functional elements are injected directly into the respective main body.
  • the plate element can be inserted into the first
  • the fixing element can then preferably in the first base body and / or in the second base body
  • the fixing element can, for example, form a fixed bearing or a support.
  • the object according to the invention is also achieved by means of a battery module for arrangement in one
  • the battery module has a plurality of battery cells and two located opposite one another
  • arranged plate elements are included, the plate elements as described above, and
  • At least one tension band is provided, which has the two plate elements and the plurality arranged between the plate elements
  • Tension band guide of the plate elements can be performed.
  • Fig. 1 is a schematic representation of a
  • FIG. 2 shows a schematic illustration of a plate element according to the invention in a plan view of a first side face of the plate element
  • Fig. 3 is a schematic representation of that shown in Fig. 2
  • Fig. 4 is a schematic representation of a body of a
  • Fig. 5 is a schematic sectional view
  • Fig. 6 shows a schematic illustration of a plate element with the direction of extension of the fibers of the organic sheet indicated by arrows
  • Fig. 7 is a schematic representation of that shown in Fig. 1
  • FIG. 1 schematically shows a battery module 100 which, in a battery housing (not shown here), contains a battery, in particular a battery for driving a battery
  • Motor vehicle such as a hybrid vehicle or a purely electric vehicle, can be arranged.
  • the battery module 100 has a plurality of battery cells 10, which are arranged one behind the other in the embodiment shown here.
  • the battery module 100 has two plate elements 200, between which the battery cells 10 are arranged.
  • the two plate elements 200 are opposite one another
  • the plate elements 200 form so-called
  • the battery module 100 In order to be able to hold the battery cells 10 securely between the plate elements 200, the battery module 100 also has a plurality of tensioning straps 11. The one shown here
  • Three straps 11 are provided, which are arranged running parallel to one another.
  • Tensioning straps 11 span the two plate elements 200 and those arranged between the two plate elements 200
  • a clamping band guide 20 in the form of a groove-shaped depression is formed on the plate elements 200 for each clamping band 11, within which the clamping bands 11 are guided.
  • FIG. 2 shows a plate element 200, as shown in FIG. 1, in a plan view of a first side surface 21 of the Plate element 200.
  • the plate element 200 has a first plate element part 22 and a second plate element part 23 which are connected to one another, in particular are integrally connected to one another.
  • the first plate element part 22 has a first base body 24 and a first organic sheet 25 arranged on the first base body 24.
  • the second plate element part 23 has a second one
  • FIG. 3 shows a plan view of a second side surface 28 of the plate element 200 opposite the first side surface 21.
  • Battery cells 10 arranged directed.
  • the organic sheets 25, 27 shown in FIGS. 2 and 3 each extend over a partial area of the respective outer surface or side face 21, 28 of the plate element 200, so that they also only extend over a partial area of the respective one
  • Base body 24, 26 extend. As in Figs. 2 and 3 too
  • the organic sheets 25, 27 each extend over the entire width B of the respective base body 24, 26, but not over the entire length L and thus only over a partial length of the respective base body 24, 26.
  • the size of the organic sheets 25, 27 is preferably selected such that the organic sheets 25, 27 cover the area of the plate element 200 on which the battery cells 10 are separated from the
  • Plate element 200 are accommodated, so that particularly good stability of the battery cells 10 is achieved
  • Plate element 20 is formed by the organic sheets 25, 27.
  • the organic sheets 25, 27 each have a fiber fabric or a fiber fabric, which are in a thermoplastic
  • Fiber fabric is made of carbon fibers, for example
  • thermoplastic plastic matrix is made, for example, of polyamide, in particular polyamide 6
  • the base bodies 24, 26 can each be formed as an injection molded part made of a thermoplastic material.
  • the thermoplastic material can be made from polyamide, in particular from polyamide 6.
  • these base bodies 24, 26 can have a fiber reinforcement, for example
  • the organic sheets 25, 27 are first shaped and
  • the organic sheet 25, 27 is then placed in an injection molding tool and the organic sheet 25, 27 is overmolded on one side by a thermoplastic material which forms the base body 24, 26.
  • Base body 24, 26 is thus injection molded onto the organic sheet 25, 27 in order to form the respective plate element part 22, 23. If the two plate element parts 22, 23 are finished, they are then made via the two base bodies 24,
  • connection of the two plate element parts 22, 23 and thus of the two base bodies 24, 26 to one another is preferably carried out by forming a material connection
  • Base body 24, 26 has a rib structure 29, 30, which is in each case formed from a multiplicity of ribs 31, 32, the ribs 31, 32 being designed as transverse ribs and as longitudinal ribs.
  • the rib structure 29, 30 extends over the entire length L and the entire width B of the respective base body 24, 26.
  • the connection of the two plate element parts 22, 23 takes place via the rib structure 29, 30 of the base body 24, 26, in that, as can be seen in FIG. 5, the ribs 31 of the
  • Rib structure 29 of the first base body 24 are connected to the ribs 32 of the rib structure 30 of the second base body 26.
  • the ribs 31 of the rib structure 29 of the first base body 24 thus encounter the ribs 32 of the rib structure 30 of the second base body 26, so that the ribs 31 of the rib structure 29 of the first base body 24 lie flat on the ribs 32 of the rib structure 30 of the second base body 26 rest, as can be seen in FIG. 5.
  • the tension band guide 20 is formed in the first organo sheet 25 of the first plate element part 22 since it is installed
  • Strap guides 20 formed. As can be seen in FIG. 5, the number of ribs 31 of the rib structure 29 of the first base body 24 and the number of ribs 32 of the rib structure 30 of the second base body 26 are increased in the region of the tensioning band guides 20, so that in the region of the
  • Strap guides 20, the ribs 31, 32 are arranged closer together.
  • the fibers of the fiber fabric or fiber fabric of the organic sheets 25, 27 are largely aligned in the main stress direction R of the plate element 200, so that more than 80% of the fibers of the organic sheets 25, 27 extend in the main stress direction R, as indicated in FIG. 6 by the arrows , the main stress direction R along the width B of the Plate element parts 22, 23 and thus run along the width of the plate element 200.
  • the main voltage direction R thus runs in the same direction as that
  • Plate element parts 22, 23 made of a thermoplastic
  • Plastic material can be functional elements, such as
  • connecting elements 33 for module units are integrated directly into the base body 24, 26 and thus into the plate element parts 22, 23 and the plate element 200 during manufacture.
  • Functional elements can be formed, for example, in one piece with the base body 24, 26, like that
  • Connecting element 33 or they can also be inserted as an insert into the injection molding tool and at
  • Injection molding of the base body 24, 26 is encapsulated by the material of the base body 24, 26.
  • fixing elements 34, 35, 36 can also be used as functional elements in the plate element part 22, 23, in particular in the base body 24, 26
  • Plate element parts 22, 23 can also be integrated, which are used to fix the plate element 200 and thus the entire
  • Battery module 100 can serve during an assembly process. Furthermore, a support 37 can also be integrated into the plate element part 22 and / or 23 as a functional element, as shown in FIG. 7.
  • the fixing element 34 forms a fixed bearing and that
  • Fixing element 35 forms a support, so that the two fixing elements 35, 36 a rotational movement of the

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'objet de l'invention est un élément plaque (200) pour un module de batterie (100) destiné à loger des éléments (10) de batterie du module de batterie (100). L'élément plaque est pourvu d'une première partie (22) et d'une deuxième partie (23), la première partie (22) d'élément plaque étant reliée à la deuxième partie (23) d'élément plaque, la première partie (22) d'élément plaque présentant un premier corps de base (24) et un premier composite (25) à matrice thermoplastique et à fibres longues disposé sur le premier corps de base (24) et la deuxième partie (23) d'élément plaque présentant un deuxième corps de base (26) et un deuxième composite (27) à matrice thermoplastique et à fibres longues disposé sur le deuxième corps de base (26).
EP19798215.0A 2018-10-31 2019-10-30 Élément plaque pour module de batterie et module de batterie Pending EP3874548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018127308.8A DE102018127308A1 (de) 2018-10-31 2018-10-31 Plattenelement für ein Batteriemodul sowie Batteriemodul
PCT/EP2019/079675 WO2020089298A1 (fr) 2018-10-31 2019-10-30 Élément plaque pour module de batterie et module de batterie

Publications (1)

Publication Number Publication Date
EP3874548A1 true EP3874548A1 (fr) 2021-09-08

Family

ID=68468679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19798215.0A Pending EP3874548A1 (fr) 2018-10-31 2019-10-30 Élément plaque pour module de batterie et module de batterie

Country Status (5)

Country Link
US (1) US20210408630A1 (fr)
EP (1) EP3874548A1 (fr)
CN (1) CN112956070B (fr)
DE (1) DE102018127308A1 (fr)
WO (1) WO2020089298A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021133441B3 (de) 2021-12-16 2023-05-04 Audi Aktiengesellschaft Batterieanordnung mit Batteriemodulen und Spannbändern zur Fixierung, Kraftfahrzeug mit Batterieanordnung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE257107T1 (de) * 1999-10-20 2004-01-15 Rcc Regional Compact Car Ag Fahrzeugzelle aus faserverstärktem thermoplastischem kunststoff
DE102011076575A1 (de) * 2011-05-27 2012-11-29 Bmw Ag Energiespeichermodul aus mehreren insbesondere prismatischen Speicherzellen und Verfahren zur Herstellung eines Energiespeichermoduls sowie Verfahren zur Herstellung einer Endplatte für ein Energiespeichermodul
DE102011076583A1 (de) * 2011-05-27 2012-11-29 Bayerische Motoren Werke Aktiengesellschaft Energiespeichermodul aus mehreren insbesondere prismatischen Speicherzellen und Verfahren zur Herstellung eines Energiespeichermoduls
DE102011111744B4 (de) * 2011-08-24 2013-09-05 Daimler Ag Steuergehäusemodul und Herstellungsverfahren
DE102013004931A1 (de) * 2013-03-22 2014-09-25 Kautex Textron Gmbh & Co. Kg Verfahren zur Herstellung eines Kraftstoffbehälters sowie Kraftstoffbehälter
DE102013210585A1 (de) * 2013-06-07 2014-12-11 Robert Bosch Gmbh Gehäusevorrichtung für zumindest eine Energiespeicherzelle und Verfahren zum Herstellen einer Gehäusevorrichtung für zumindest eine Energiespeicherzelle
US9537125B2 (en) * 2013-06-27 2017-01-03 Samsung Sdi Co., Ltd. Battery module
CN107437599B (zh) * 2017-09-11 2023-07-25 力神（青岛）新能源有限公司 一种方形电池模组架
CN107946488A (zh) * 2017-11-16 2018-04-20 北京航空航天大学 基于连续纤维与长纤维混杂设计的复合材料电池壳及制备工艺

Also Published As

Publication number Publication date
US20210408630A1 (en) 2021-12-30
CN112956070A (zh) 2021-06-11
CN112956070B (zh) 2023-09-26
WO2020089298A1 (fr) 2020-05-07
DE102018127308A1 (de) 2020-04-30

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