WO2012065855A1 - Mounting device for at least one battery module - Google Patents

Mounting device for at least one battery module Download PDF

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Publication number
WO2012065855A1
WO2012065855A1 PCT/EP2011/069362 EP2011069362W WO2012065855A1 WO 2012065855 A1 WO2012065855 A1 WO 2012065855A1 EP 2011069362 W EP2011069362 W EP 2011069362W WO 2012065855 A1 WO2012065855 A1 WO 2012065855A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery module
fastening device
support
support member
Prior art date
Application number
PCT/EP2011/069362
Other languages
German (de)
French (fr)
Inventor
Martin Michelitsch
Original Assignee
Avl List Gmbh
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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2012065855A1 publication Critical patent/WO2012065855A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • 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
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/04—Arrangement of 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
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the invention relates to a fastening device for at least one battery module, in particular for at least one battery module of an electric vehicle, having a support structure with at least one battery module engaging under supporting part, wherein the battery module is firmly connected to the support structure.
  • US 2009/226806 A discloses a fastening device for batteries in a vehicle, wherein a battery pack is fastened by screws to the vehicle floor.
  • a similar arrangement is known from EP 1 850 407 AI.
  • Low-voltage batteries are usually connected via clamping devices to the body of the vehicle, as known for example from the publications KR 2001-0093501 A, KR 100 680 543 Bl or DE 10 2006 026 619 AI. Such clamping devices are not suitable for high voltage batteries for safety reasons.
  • the KR 2001-0092493 A discloses a fastening device for a vehicle battery, wherein the attachment via the battery passing through mounting rods, which can be positively connected to vehicle-mounted tabs.
  • this type of attachment is less suitable for high voltage batteries of an electric vehicle for safety reasons.
  • the object of the invention is to avoid the disadvantages mentioned and to attach batteries, especially high-voltage batteries, in a simple and secure manner to the body of a vehicle, with the highest possible weight-related energy densities to be achieved.
  • the support structure has at least a first and a second support part, wherein the arranged on different sides of the battery module supporting parts by at least one Ceian- - - ker are interconnected, wherein preferably at least one tie rods are arranged normal to the stacking direction of the battery cells.
  • a particularly secure attachment can be achieved if each preferably formed by a fastening screw tie rods with the two support parts, positively and / or non-positively connected, preferably screwed, wherein particularly preferably the tie rod is disposed predominantly within the battery module.
  • the battery module is disposed in a battery case, wherein at least one of the two support members, preferably both support members, is fixedly connected to a battery housing surrounding the battery.
  • a particularly secure attachment is made possible if at least one support part, preferably each support part, is arranged between the battery module and the battery housing, wherein preferably at least one first support part in a bottom region of the battery housing and at least one second support part in a ceiling region of the battery and / or Battery housing is arranged. It is particularly advantageous if at least one tie rod penetrates the battery housing, and the battery housing is connected via at least one nut or a screw head of the tie rod firmly with at least one support member.
  • a cost-effective attachment can be accomplished if at least one support member is formed by an elongated profile part, preferably by a closed hollow profile, particularly preferably by an extruded profile, preferably made of aluminum. But it is also possible to use as the material for the profiled support plastic, preferably polyamide. By a trapezoidal hollow profile, for example, a high rigidity can be achieved with low weight.
  • the battery module is advantageously thermally decoupled from the carrier structure, wherein preferably at least one heat-insulating part, preferably a foamed part, is arranged between the battery module and the battery housing.
  • a further improvement of the thermal insulation can be achieved if at least one sealing device is arranged between at least one support part and the battery housing and / or between the support part and the battery module.
  • a very secure and stable storage of the battery module can be achieved if the support structure in each case at least two, preferably at least three, particularly preferably arranged parallel to each other, first and second support - - Parts, wherein preferably the battery housing in the region of at least one support member, at least one preferably parallel to the support member extending stiffening rib may have.
  • the battery housing consists of at least two housing parts, which are preferably connected to overlapping flange surfaces firmly together, particularly preferably glued.
  • a particularly secure attachment can be achieved if the support member and / or the recess has a trapezoidal - or wedge-shaped profile. Due to the trapezoidal or wedge-shaped cross section, the battery module together with the battery housing can be connected without play with the support structure, so that a stable and accident-proof attachment is ensured in the vehicle.
  • a secure connection of the support structure to the body can be achieved if at least one support member is firmly connected to at least one end of the battery module projecting end to the body of the vehicle, preferably screwed.
  • the support member made of aluminum or plastic, preferably made of polyamide.
  • a particularly good heat decoupling between the battery modules and the battery housing or the body can be achieved if the battery module is thermally decoupled from the support structure, preferably between the battery module and the battery housing at least one heat-insulating part, preferably a foamed part, is arranged.
  • FIG. 1 shows a battery unit with a fastening device according to the invention with the housing upper part removed, in an oblique view;
  • Fig. 2 shows the battery unit in a section along the line II - II in
  • FIG. 4 shows a battery module with a fastening device in detail in an oblique view. - -
  • Fig. 1 shows a battery unit 20 with a battery case 1, which is fixedly connected to a support structure 2 having a fastening device 3, and with one or more battery modules 7.
  • the support structure 2 has a plurality of mutually parallel first support members 4, 5, 6 and second Support members 14, 15, 16, which may be formed for example by extruded aluminum.
  • the support members 4, 5, 6; 14, 15, 16 also be made of plastic, for example polyamide.
  • At least one of a plurality of battery cells 7 'exhibiting battery module 7 is arranged, which directly via a plurality of fastening screws 8a by means of tie rods 8 with the first and second support members 4, 5, 6; 14, 15, 16 is firmly connected.
  • the elongated first support parts 4, 5, 6 are between the battery case 1 in the bottom portion la and / or in the bottom portion 7a of the battery module 7 and the second support members 14, 15, 16 in the ceiling area lb, 7b of the battery case 1 and / or the battery module 7 and arranged, wherein the battery case 1 in the region of the support members 4, 5, 6; 14, 15, 16 parallel to the support member extending stiffening ribs 9 has.
  • the fastening screws 8a are guided through holes in the battery module 7 and through openings of the battery case 1 and with the nuts 8b, 8b 'firmly screwed.
  • sealing means 13 are provided, which may be formed by O-rings, silicone inserts, EPTM (ethylene-propylene-diene monomer), or the like.
  • the sealing force is created by the tension of the supporting parts 4, 5, 6;
  • the thermal decoupling still by use of heat-insulating material, for example by a foamed part, between - -
  • Battery module 7 and the battery case 1 can be improved without the connection to the support structure 2 is adversely affected.
  • the two housing parts 10, 11 may be glued together on a specially shaped flange.
  • the composite of battery modules 7, support structure 2 and the battery housing 1 together form a lightweight and inexpensive supporting structure
  • the support structure 2 By the described support structure 2, a high weight-related energy density can be achieved, since the use of supporting metal parts can be reduced to a minimum. Nevertheless, a secure attachment of the relatively high battery weight in the vehicle under the usual operating conditions, especially in the event of a crash, guaranteed.
  • the support structure 2 is very simple and inexpensive to manufacture and can be bolted directly to the body of the vehicle.
  • a significant advantage is the good thermal insulation of the battery modules 7 to the outside, which is particularly important for cold start and operation or standstill at hot temperatures of great importance.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to a mounting device (3) for at least one battery module (7), in particular for at least one battery module (7) of an electric vehicle, having a carrier structure (2) comprising at least one supporting part (4, 5, 6) below the battery module (7), wherein the battery module (7) is rigidly connected to the carrier structure (2). In order to ensure lightweight, low cost, and reliable mounting of the battery in the vehicle, the carrier structure (2) comprises at least one first and at least one second supporting part (4, 5, 6; 14, 15, 16), wherein the supporting parts (4, 5, 6; 14, 15, 16) disposed on different sides of the battery module (7) are connected to each other by at least one tie bar (8).

Description

- -  - -
Befestigungseinrichtung für zumindest ein Batteriemodul Fastening device for at least one battery module
Die Erfindung betrifft eine Befestigungseinrichtung für zumindest ein Batteriemodul, insbesondere für zumindest ein Batteriemodul eines Elektrofahrzeuges, mit einer Trägerstruktur mit zumindest einem das Batteriemodul untergreifenden Tragteil, wobei das Batteriemodul fest mit der Trägerstruktur verbunden ist. The invention relates to a fastening device for at least one battery module, in particular for at least one battery module of an electric vehicle, having a support structure with at least one battery module engaging under supporting part, wherein the battery module is firmly connected to the support structure.
Es ist bekannt, Batteriezellen bzw. Batteriemodule auf Profilträgern zu montieren. Weiters ist es bekannt, Batteriemodule auf durchgängigen metallischen Trägerplatten zu befestigen. It is known to mount battery cells or battery modules on profile carriers. Furthermore, it is known to attach battery modules on continuous metal support plates.
Die US 2009/226 806 A offenbart eine Befestigungseinrichtung für Batterien in einem Fahrzeug, wobei eine Batteriepackung über Schrauben am Fahrzeugboden befestigt ist. Eine ähnliche Anordnung ist aus der EP 1 850 407 AI bekannt. US 2009/226806 A discloses a fastening device for batteries in a vehicle, wherein a battery pack is fastened by screws to the vehicle floor. A similar arrangement is known from EP 1 850 407 AI.
Niederspannungsbatterien werden üblicherweise über Klemmeinrichtungen mit der Karosserie des Fahrzeuges verbunden, wie beispielsweise aus den Veröffentlichungen KR 2001-0093501 A, KR 100 680 543 Bl oder der DE 10 2006 026 619 AI bekannt ist. Derartige Klemmeinrichtungen sind aus Sicherheitsgründen für Hochspannungsbatterien nicht geeignet. Low-voltage batteries are usually connected via clamping devices to the body of the vehicle, as known for example from the publications KR 2001-0093501 A, KR 100 680 543 Bl or DE 10 2006 026 619 AI. Such clamping devices are not suitable for high voltage batteries for safety reasons.
Die KR 2001-0092493 A offenbart eine Befestigungseinrichtung für eine Fahrzeugbatterie, wobei die Befestigung über die Batterie durchsetzende Befestigungsstangen erfolgt, welche formschlüssig mit fahrzeugfesten Laschen verbunden werden können. Diese Befestigungsart ist allerdings aus Sicherheitsgründen für Hochspannungsbatterien eines Elektrofahrzeuges weniger geeignet. The KR 2001-0092493 A discloses a fastening device for a vehicle battery, wherein the attachment via the battery passing through mounting rods, which can be positively connected to vehicle-mounted tabs. However, this type of attachment is less suitable for high voltage batteries of an electric vehicle for safety reasons.
Weiters ist es bekannt, die Befestigung der Batterien am Fahrzeug über rahmenartige Strukturen vorzunehmen, siehe beispielsweise CN 101 710 613 A oder KR 2006-0091948 A. Derartige Trägerstrukturen weisen allerdings den Nachteil eines hohen Gewichtes auf, was dem Bestreben, möglichst hohe gewichtsbezogene Energiedichten zu erreichen, entgegensteht. Furthermore, it is known to perform the attachment of the batteries on the vehicle via frame-like structures, see for example CN 101 710 613 A or KR 2006-0091948 A. Such support structures, however, have the disadvantage of a high weight, which is the desire as high as possible weight-related energy densities reach, oppose.
Aufgabe der Erfindung ist es, die genannten Nachteile zu vermeiden und Batterien, insbesondere Hochspannungsbatterien, auf einfache und sichere Weise an der Karosserie eines Fahrzeuges zu befestigen, wobei möglichst hohe gewichtsbezogene Energiedichten erreicht werden sollen. The object of the invention is to avoid the disadvantages mentioned and to attach batteries, especially high-voltage batteries, in a simple and secure manner to the body of a vehicle, with the highest possible weight-related energy densities to be achieved.
Erfindungsgemäß wird dies dadurch erreicht, dass die Trägerstruktur zumindest einen ersten und einen zweiten Tragteil aufweist, wobei die an unterschiedlichen Seiten des Batteriemoduls angeordneten Tragteile durch zumindest einen Zugan- - - ker miteinander verbunden sind, wobei vorzugsweise zumindest ein Zuganker normal zur Stapelrichtung der Batteriezellen angeordnet sind. According to the invention this is achieved in that the support structure has at least a first and a second support part, wherein the arranged on different sides of the battery module supporting parts by at least one Zugan- - - ker are interconnected, wherein preferably at least one tie rods are arranged normal to the stacking direction of the battery cells.
Eine besonders sichere Befestigung lässt sich erzielen, wenn jeder vorzugsweise durch eine Befestigungsschraube gebildete Zuganker mit den beiden Tragteilen, formschlüssig- und/oder kraftschlüssig verbunden, vorzugsweise verschraubt ist, wobei besonders vorzugsweise der Zuganker überwiegend innerhalb des Batteriemoduls angeordnet ist. A particularly secure attachment can be achieved if each preferably formed by a fastening screw tie rods with the two support parts, positively and / or non-positively connected, preferably screwed, wherein particularly preferably the tie rod is disposed predominantly within the battery module.
Zum Schutz des Batteriemoduls kann vorgesehen sein, dass das Batteriemodul in einem Batteriegehäuse angeordnet ist, wobei zumindest einer der beiden Tragteile, vorzugsweise beide Tragteile, mit einem die Batterie umgebenden Batteriegehäuse fest verbunden ist. To protect the battery module can be provided that the battery module is disposed in a battery case, wherein at least one of the two support members, preferably both support members, is fixedly connected to a battery housing surrounding the battery.
Eine besonders sichere Befestigung wird ermöglicht, wenn zumindest ein Tragteil, vorzugsweise jeder Tragteil, zwischen dem Batteriemodul und dem Batteriegehäuse angeordnet ist, wobei vorzugsweise zumindest ein erster Tragteil in einem Bodenbereich des Batteriegehäuses und zumindest ein zweiter Tragteil in einem Deckenbereich der Batterie und/oder des Batteriegehäuses angeordnet ist. Dabei ist es besonders vorteilhaft, wenn zumindest ein Zuganker das Batteriegehäuse durchdringt, und das Batteriegehäuse über zumindest eine Mutter oder einen Schraubekopf des Zugankers fest mit zumindest einem Tragteil verbunden ist. A particularly secure attachment is made possible if at least one support part, preferably each support part, is arranged between the battery module and the battery housing, wherein preferably at least one first support part in a bottom region of the battery housing and at least one second support part in a ceiling region of the battery and / or Battery housing is arranged. It is particularly advantageous if at least one tie rod penetrates the battery housing, and the battery housing is connected via at least one nut or a screw head of the tie rod firmly with at least one support member.
Eine kostengünstige Befestigung lässt sich bewerkstelligen, wenn zumindest ein Tragteil durch einen langgestreckten Profilteil, vorzugsweise durch ein geschlossenes Hohlprofil, besonders vorzugsweise durch ein Strangpressprofil, vorzugsweise aus Aluminium gebildet ist. Es ist aber auch möglich, als Werkstoff für den profilierten Tragteil Kunststoff, vorzugsweise Polyamid, einzusetzen. Durch ein beispielsweise trapezförmiges Hohlprofil lässt sich eine hohe Steifigkeit bei geringem Gewicht erzielen . A cost-effective attachment can be accomplished if at least one support member is formed by an elongated profile part, preferably by a closed hollow profile, particularly preferably by an extruded profile, preferably made of aluminum. But it is also possible to use as the material for the profiled support plastic, preferably polyamide. By a trapezoidal hollow profile, for example, a high rigidity can be achieved with low weight.
Das Batteriemodul ist vorteilhafterweise von der Trägerstruktur thermisch entkoppelt, wobei vorzugsweise zwischen dem Batteriemodul und dem Batteriegehäuse zumindest ein wärmeisolierender Teil, vorzugsweise ein geschäumter Teil, angeordnet ist. Eine weitere Verbessung der thermischen Isolierung kann erzielt werden, wenn zwischen zumindest einem Tragteil und dem Batteriegehäuse und/ oder zwischen dem Tragteil und dem Batteriemodul zumindest eine Dichteinrichtung angeordnet ist. The battery module is advantageously thermally decoupled from the carrier structure, wherein preferably at least one heat-insulating part, preferably a foamed part, is arranged between the battery module and the battery housing. A further improvement of the thermal insulation can be achieved if at least one sealing device is arranged between at least one support part and the battery housing and / or between the support part and the battery module.
Eine sehr sichere und stabile Lagerung des Batteriemoduls kann erreicht werden, wenn die Trägerstruktur jeweils zumindest zwei, vorzugsweise zumindest drei, besonders vorzugsweise parallel zueinander angeordnete, erste und zweite Trag- - - teile aufweist, wobei vorzugsweise das Batteriegehäuse im Bereich zumindest eines Tragteils, zumindest eine vorzugsweise parallel zum Tragteil verlaufende Versteifungsrippe aufweisen kann. A very secure and stable storage of the battery module can be achieved if the support structure in each case at least two, preferably at least three, particularly preferably arranged parallel to each other, first and second support - - Parts, wherein preferably the battery housing in the region of at least one support member, at least one preferably parallel to the support member extending stiffening rib may have.
Zur weiteren Erhöhung der Steifigkeit ist es von Vorteil, wenn das Batteriegehäuse aus zumindest zwei Gehäuseteilen besteht, welche vorzugsweise an überlappenden Flanschflächen fest miteinander verbunden, besonders vorzugsweise verklebt sind. To further increase the rigidity, it is advantageous if the battery housing consists of at least two housing parts, which are preferably connected to overlapping flange surfaces firmly together, particularly preferably glued.
Eine besonders sichere Befestigung lässt sich erzielen, wenn der Tragteil und/ oder die Ausnehmung ein trapezförmiges - oder keilförmiges Profil aufweist. Durch den trapez- oder keilförmigen Querschnitt kann das Batteriemodul samt dem Batteriegehäuse spielfrei mit der Trägerstruktur verbunden werden, so dass eine stabile und unfallsichere Befestigung im Fahrzeug gewährleistet ist. A particularly secure attachment can be achieved if the support member and / or the recess has a trapezoidal - or wedge-shaped profile. Due to the trapezoidal or wedge-shaped cross section, the battery module together with the battery housing can be connected without play with the support structure, so that a stable and accident-proof attachment is ensured in the vehicle.
Eine sichere Anbindung der Trägerstruktur an die Karosserie lässt sich erzielen, wenn zumindest ein Tragteil an zumindest einem das Batteriemodul überragenden Ende mit der Karosserie des Fahrzeuges fest verbunden, vorzugsweise verschraubt ist. A secure connection of the support structure to the body can be achieved if at least one support member is firmly connected to at least one end of the battery module projecting end to the body of the vehicle, preferably screwed.
Um das Gewicht möglichst gering zu halten und um hohe gewichtsbezogene Energiedichten zu erreichen, ist es vorteilhaft, wenn der Tragteil aus Aluminium oder Kunststoff, vorzugsweise aus Polyamid, besteht. In order to keep the weight as low as possible and to achieve high weight-related energy densities, it is advantageous if the support member made of aluminum or plastic, preferably made of polyamide.
Eine besonders gute Wärmeentkopplung zwischen den Batteriemodulen und dem Batteriegehäuse bzw. der Karosserie lässt sich erreichen, wenn das Batteriemodul von der Trägerstruktur thermisch entkoppelt ist, wobei vorzugsweise zwischen dem Batteriemodul und dem Batteriegehäuse zumindest ein wärmeisolierender Teil, vorzugsweise ein geschäumter Teil, angeordnet ist. A particularly good heat decoupling between the battery modules and the battery housing or the body can be achieved if the battery module is thermally decoupled from the support structure, preferably between the battery module and the battery housing at least one heat-insulating part, preferably a foamed part, is arranged.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen : The invention will be explained in more detail below with reference to FIGS. Show it :
Fig. 1 eine Batterieeinheit mit einer erfindungsgemäßen Befestigungseinrichtung mit entferntem Gehäuseoberteil, in einer Schrägansicht; 1 shows a battery unit with a fastening device according to the invention with the housing upper part removed, in an oblique view;
Fig. 2 die Batterieeinheit in einem Schnitt gemäß der Linie II - II in Fig. 2 shows the battery unit in a section along the line II - II in
Fig. 1;  Fig. 1;
Fig. 3 die Batterieeinheit in einem Schnitt gemäß der Linie III - III in Fig. 3, the battery unit in a section along the line III - III in
Fig. 1; und  Fig. 1; and
Fig. 4 ein Batteriemodul mit einer Befestigungseinrichtung im Detail in einer Schrägansicht. - - 4 shows a battery module with a fastening device in detail in an oblique view. - -
Fig. 1 zeigt eine Batterieeinheit 20 mit einem Batteriegehäuse 1, welches fest mit einer eine Trägerstruktur 2 aufweisenden Befestigungseinrichtung 3 verbunden ist, sowie mit einem oder mehreren Batteriemodulen 7. Die Trägerstruktur 2 weist mehrere parallel zueinander angeordnete erste Tragteile 4, 5, 6 und zweite Tragteilen 14, 15, 16 auf, welche beispielsweise durch Strangpressprofile aus Aluminium gebildet sein können. Alternativ dazu können die Tragteile 4, 5, 6; 14, 15, 16 auch aus Kunststoff, beispielsweise Polyamid, ausgeführt sein. Fig. 1 shows a battery unit 20 with a battery case 1, which is fixedly connected to a support structure 2 having a fastening device 3, and with one or more battery modules 7. The support structure 2 has a plurality of mutually parallel first support members 4, 5, 6 and second Support members 14, 15, 16, which may be formed for example by extruded aluminum. Alternatively, the support members 4, 5, 6; 14, 15, 16 also be made of plastic, for example polyamide.
Innerhalb des Batteriegehäuses 1 ist zumindest ein eine Vielzahl an Batteriezellen 7' aufweisendes Batteriemodul 7 angeordnet, welches über eine Mehrzahl an durch Befestigungsschrauben 8a aufweisende Zuganker 8 direkt kraftschlüssig mit den ersten und zweiten Tragteilen 4, 5, 6; 14, 15, 16 fest verbunden ist. Die langgestreckten ersten Tragteile 4, 5, 6 sind dabei zwischen dem Batteriegehäuse 1 in dessen Bodenbereich la und/oder im Bodenbereich 7a des Batteriemoduls 7 und die zweiten Tragteile 14, 15, 16 im Deckenbereich lb, 7b des Batteriegehäuses 1 und/oder des Batteriemoduls 7 und angeordnet, wobei das Batteriegehäuse 1 im Bereich der Tragteile 4, 5, 6; 14, 15, 16 parallel zum Tragteil verlaufende Versteifungsrippen 9 aufweist. Within the battery case 1 at least one of a plurality of battery cells 7 'exhibiting battery module 7 is arranged, which directly via a plurality of fastening screws 8a by means of tie rods 8 with the first and second support members 4, 5, 6; 14, 15, 16 is firmly connected. The elongated first support parts 4, 5, 6 are between the battery case 1 in the bottom portion la and / or in the bottom portion 7a of the battery module 7 and the second support members 14, 15, 16 in the ceiling area lb, 7b of the battery case 1 and / or the battery module 7 and arranged, wherein the battery case 1 in the region of the support members 4, 5, 6; 14, 15, 16 parallel to the support member extending stiffening ribs 9 has.
Die zum Beispiel durch einen Gewindebolzen gebildete Befestigungsschraube 8a des Zugankers 8, deren Achse mit 8' bezeichnet ist, durchdringt den ersten Gehäuseteil 10 des Batteriegehäuses 1, einen ersten Tragteil 4, 5, 6, das Batteriemodul 7, den zweiten Tragteil 14, 15 bzw. 16 und den zweiten Gehäuseteil 11 des Batteriegehäuses 1 und weist an das Batteriemodul 7 und ist an den Enden über zumindest eine Mutter 8b verschraubt, wobei das andere Ende der Befestigungsschraube 8a einen Schraubenkopf oder eine weitere Mutter 8b' aufweisen kann. Durch den solcherart vorgespannten Zuganker 8 werden die Gehäuseteile 10, 11 fest an die Tragteile 4, 5, 6; 14, 15, 16 gepresst und die Tragteile 4, 5, 6; 14, 15, 16 fest in Stapelrichtung der Batteriezellen an den Batteriemodul gedrückt. Die Befestigungsschrauben 8a sind dabei durch Bohrungen des Batteriemoduls 7 und durch Öffnungen des Batteriegehäuses 1 geführt und mit den Muttern 8b, 8b' fest verschraubt. Zur thermischen Entkoppelung des Batteriemoduls 7 von der Trägerstruktur 2 sind zwischen jedem Tragteil 4, 5, 6; 14, 15, 16 und dem Batteriegehäuse 1 und/oder zwischen jedem Tragteil 4, 5, 6; 14, 15, 16 und dem Batteriemodul 7 Dichteinrichtungen 13 vorgesehen, welche durch O- Ringe, Silikoneinlagen, EPTM (Ethylen-Propylen-Dien-Monomer), oder dergleichen gebildet sein können. Die Dichtkraft entsteht durch die Verspannung der Tragteile 4, 5, 6; 14, 15, 16 zum Batteriegehäuse 1 bzw. zum Batteriemodul 7. Gegebenenfalls kann die thermische Entkoppelung noch durch Einsatz von wärmeisolierenden Material, zum Beispiel durch einen geschäumten Teil, zwischen - - The fastening screw 8a of the tie rod 8, whose axis is denoted by 8 ', for example, formed by a threaded bolt, penetrates the first housing part 10 of the battery housing 1, a first support part 4, 5, 6, the battery module 7, the second support part 14, 15 or 16 and the second housing part 11 of the battery housing 1 and points to the battery module 7 and is screwed at the ends via at least one nut 8b, wherein the other end of the fastening screw 8a may have a screw head or a further nut 8b '. By the thus prestressed tie rods 8, the housing parts 10, 11 fixed to the support members 4, 5, 6; 14, 15, 16 pressed and the support members 4, 5, 6; 14, 15, 16 pressed firmly in the stacking direction of the battery cells to the battery module. The fastening screws 8a are guided through holes in the battery module 7 and through openings of the battery case 1 and with the nuts 8b, 8b 'firmly screwed. For thermal decoupling of the battery module 7 of the support structure 2 are between each support member 4, 5, 6; 14, 15, 16 and the battery housing 1 and / or between each support member 4, 5, 6; 14, 15, 16 and the battery module 7 sealing means 13 are provided, which may be formed by O-rings, silicone inserts, EPTM (ethylene-propylene-diene monomer), or the like. The sealing force is created by the tension of the supporting parts 4, 5, 6; Optionally, the thermal decoupling still by use of heat-insulating material, for example by a foamed part, between - -
Batteriemodul 7 und dem Batteriegehäuse 1 verbessert werden, ohne dass die Anbindung an die Trägerstruktur 2 nachteilig beeinflusst wird. Battery module 7 and the battery case 1 can be improved without the connection to the support structure 2 is adversely affected.
Zur Erhöhung der Steifigkeit können die beiden Gehäuseteile 10, 11 an einem speziell dafür geformten Flansch miteinander verklebt sein. To increase the rigidity, the two housing parts 10, 11 may be glued together on a specially shaped flange.
Der Verbund aus Batteriemodulen 7, Trägerstruktur 2 und dem Batteriegehäuse 1 bildet zusammen eine leichte und kostengünstige tragende Struktur The composite of battery modules 7, support structure 2 and the battery housing 1 together form a lightweight and inexpensive supporting structure
Durch die beschriebene Trägerstruktur 2 lässt sich eine hohe gewichtsbezogene Energiedichte erreichen, da der Einsatz an tragenden Metallteilen auf ein Mindestmaß reduziert werden kann. Trotzdem ist eine sichere Befestigung des relativ hohen Batteriegewichts im Fahrzeug unter den üblichen Betriebsbedingungen, insbesondere im Falle eines Crashs, gewährleistet. Die Trägerstruktur 2 ist sehr einfach und kostengünstig herzustellen und kann direkt an der Karosserie des Fahrzeuges verschraubt werden. By the described support structure 2, a high weight-related energy density can be achieved, since the use of supporting metal parts can be reduced to a minimum. Nevertheless, a secure attachment of the relatively high battery weight in the vehicle under the usual operating conditions, especially in the event of a crash, guaranteed. The support structure 2 is very simple and inexpensive to manufacture and can be bolted directly to the body of the vehicle.
Ein wesentlicher Vorteil ist die gute thermische Isolation der Batteriemodule 7 nach außen, was insbesondere bei Kaltstart und Betrieb bzw. Stillstand bei heißen Temperaturen von großer Bedeutung ist. A significant advantage is the good thermal insulation of the battery modules 7 to the outside, which is particularly important for cold start and operation or standstill at hot temperatures of great importance.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Befestigungseinrichtung (3) für zumindest ein Batteriemodul (7), insbesondere für zumindest ein Batteriemodul (7) eines Eiektrofahrzeuges, mit einer Trägerstruktur (2) mit zumindest einem das Batteriemodul (7) untergreifenden Tragteil (4, 5, 6), wobei das Batteriemodul (7) fest mit der Trägerstruktur (2) verbunden ist, dadurch gekennzeichnet, dass die Trägerstruktur (2) zumindest einen ersten und zumindest einen zweiten Tragteil (4, 5, 6; 14, 15, 16), aufweist, wobei die an unterschiedlichen Seiten des Batteriemoduls (7) angeordneten Tragteile (4, 5, 6; 14, 15, 16) durch zumindest einen Zuganker (8), vorzugsweise zumindest zwei Zuganker (8), besonders vorzugsweise zumindest drei Zuganker (8), miteinander verbunden sind. 1. Fastening device (3) for at least one battery module (7), in particular for at least one battery module (7) of an electric vehicle, with a support structure (2) with at least one battery module (7) under cross-supporting part (4, 5, 6), wherein the battery module (7) is fixedly connected to the carrier structure (2), characterized in that the carrier structure (2) has at least one first and at least one second carrier part (4, 5, 6; 14, 15, 16), wherein the Support parts (4, 5, 6, 14, 15, 16) arranged on different sides of the battery module (7) are connected to one another by at least one tie rod (8), preferably at least two tie rods (8), particularly preferably at least three tie rods (8) are.
2. Befestigungseinrichtung (3) nach Anspruch 1, dadurch gekennzeichnet, dass zumindest ein Zuganker (8) normal zur Stapelrichtung der Batteriezellen (7') angeordnet sind. 2. Fastening device (3) according to claim 1, characterized in that at least one tie rod (8) are arranged normal to the stacking direction of the battery cells (7 ').
3. Befestigungseinrichtung (3) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeder vorzugsweise eine Befestigungsschraube aufweisende gebildete Zuganker (8) mit dem ersten und zweiten Tragteil (4, 5, 6; 14, 15, 16) formschlüssig- und/oder kraftschlüssig verbunden, vorzugsweise verschraubt ist, wobei besonders vorzugsweise der Zuganker (8) überwiegend innerhalb des Batteriemoduls (7) angeordnet ist. 3. Fastening device (3) according to claim 1 or 2, characterized in that each preferably a fastening screw formed tie rod (8) with the first and second support member (4, 5, 6; 14, 15, 16) positively and / or positively connected, preferably screwed, wherein particularly preferably the tie rod (8) is arranged predominantly within the battery module (7).
4. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Batteriemodul (7) in einem Batteriegehäuse (1) angeordnet ist, wobei zumindest einer der beiden Tragteile (4, 5, 6; 14, 15, 16), vorzugsweise beide Tragteile (4, 5, 6; 14, 15, 16), mit einem den Batteriemodul (7) umgebenden Batteriegehäuse (1) fest verbunden ist. 4. Fastening device (3) according to one of claims 1 to 3, characterized in that the battery module (7) in a battery housing (1) is arranged, wherein at least one of the two supporting parts (4, 5, 6; 14, 15, 16 ), preferably both supporting parts (4, 5, 6, 14, 15, 16), with a battery housing (7) surrounding the battery case (1) is firmly connected.
5. Befestigungseinrichtung (3) nach Anspruch 4, dadurch gekennzeichnet, dass zumindest ein Tragteil (4, 5, 6; 14, 15, 16), vorzugsweise jeder Tragteil (4, 5, 6; 14, 15, 16), zwischen dem Batteriemodul (7) und dem Batteriegehäuse (1) angeordnet ist. 5. fastening device (3) according to claim 4, characterized in that at least one support member (4, 5, 6; 14, 15, 16), preferably each support member (4, 5, 6; 14, 15, 16), between the Battery module (7) and the battery case (1) is arranged.
6. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zumindest ein erster Tragteil (4, 5, 6) in einem Bodenbereich (la) des Batteriegehäuses (1) und zumindest ein zweiter Tragteil (14, 15, 16) in einem Deckenbereich (lb, 7b) des Batteriegehäuses (1) und/oder des Batteriemoduls (7) angeordnet ist. 6. Fastening device (3) according to one of claims 1 to 5, characterized in that at least one first support part (4, 5, 6) in a bottom region (la) of the battery case (1) and at least a second support member (14, 15, 16) in a ceiling area (lb, 7b) of the battery case (1) and / or the battery module (7) is arranged.
7. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zumindest ein Zuganker (8) das Batteriegehäuse (1) durchdringt, wobei vorzugsweise das Batteriegehäuse (1) über zumindest eine Mutter (8b) oder ein Schraubenkopf (8c) des Zugankers (8) fest mit zumindest einem Tragteil (4, 5, 6; 14, 15, 16) verbunden ist. 7. Fastening device (3) according to one of claims 1 to 6, characterized in that at least one tie rod (8) penetrates the battery housing (1), wherein preferably the battery housing (1) via at least one nut (8b) or a screw head (8c ) of the tie rod (8) is fixedly connected to at least one support part (4, 5, 6; 14, 15, 16).
8. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass zumindest ein Tragteil (4, 5, 6; 14, 15, 16) durch einen langgestreckten Profilteil, vorzugsweise durch ein geschlossenes Hohlprofil, besonders vorzugsweise durch ein Strangpressprofil gebildet ist. 8. Fastening device (3) according to one of claims 1 to 7, characterized in that at least one support member (4, 5, 6; 14, 15, 16) by an elongated profile part, preferably by a closed hollow profile, particularly preferably by an extruded profile is formed.
9. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zwischen zumindest einem Tragteil (4, 5, 6; 14, 15, 16) und dem Batteriegehäuse (1) und/oder zwischen dem Tragteil (4, 5, 6; 14, 15, 16) und dem Batteriemodul (7) zumindest eine Dichteinrichtung (13) angeordnet ist. 9. fastening device (3) according to one of claims 1 to 8, characterized in that between at least one support member (4, 5, 6; 14, 15, 16) and the battery housing (1) and / or between the support member (4, 5, 6, 14, 15, 16) and the battery module (7) at least one sealing device (13) is arranged.
10. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Trägerstruktur (2) jeweils zumindest zwei, vorzugsweise zumindest drei, besonders vorzugsweise parallel zueinander angeordnete, erste und zweite Tragteile (4, 5, 6; 14, 15, 16) aufweist. 10. Fastening device (3) according to one of claims 1 to 9, characterized in that the support structure (2) in each case at least two, preferably at least three, particularly preferably arranged parallel to each other, first and second supporting parts (4, 5, 6; 15, 16).
11. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das Batteriegehäuse (1) vorzugsweise im Bereich zumindest eines Tragteils (4, 5, 6; 14, 15, 16), zumindest eine vorzugsweise parallel zum Tragteil (4, 5, 6; 14, 15, 16) verlaufende Versteifungsrippe (9) aufweist. 11. Fastening device (3) according to one of claims 1 to 10, characterized in that the battery housing (1) preferably in the region of at least one supporting part (4, 5, 6; 14, 15, 16), at least one preferably parallel to the supporting part ( 4, 5, 6, 14, 15, 16) extending stiffening rib (9).
12. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass zumindest ein Tragteil (4, 5, 6; 14, 15, 16) einen trapezförmigen Querschnitt aufweist. 12. Fastening device (3) according to one of claims 1 to 11, characterized in that at least one support part (4, 5, 6; 14, 15, 16) has a trapezoidal cross-section.
13. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass zumindest ein Tragteil (4, 5, 6; 14, 15, 16) aus Aluminium oder Kunststoff, vorzugsweise aus Polyamid, besteht. 13. Fastening device (3) according to one of claims 1 to 12, characterized in that at least one support member (4, 5, 6; 14, 15, 16) made of aluminum or plastic, preferably made of polyamide.
14. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass zumindest ein Tragteil (4, 5, 6; 14, 15, 16) an zumindest einem das Batteriemodul (7) überragenden Ende mit der Karosserie des Fahrzeuges fest verbunden, vorzugsweise verschraubt ist. 14. Fastening device (3) according to one of claims 1 to 13, characterized in that at least one support part (4, 5, 6; 14, 15, 16) fixed to at least one battery module (7) projecting end to the body of the vehicle connected, preferably screwed.
15. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass das Batteriemodul (7) von der Trägerstruktur (2) thermisch entkoppelt ist, wobei vorzugsweise zwischen dem Batteriemodul (7) und dem Batteriegehäuse (1) zumindest ein wärmeisolierender Teil, vorzugsweise ein geschäumter Teil, angeordnet ist. 15. Fastening device (3) according to one of claims 1 to 14, characterized in that the battery module (7) of the support structure (2) is thermally decoupled, preferably between the battery module (7) and the battery case (1) at least one heat-insulating part, preferably a foamed part, is arranged.
16. Befestigungseinrichtung (3) nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass das Batteriegehäuse (1) aus zumindest zwei Gehäuseteilen (la, lb) besteht, welche vorzugsweise an überlappenden Flanschflächen eines Flansches (17) fest miteinander verbunden, besonders vorzugsweise verklebt sind. 16. Fastening device (3) according to one of claims 1 to 15, characterized in that the battery housing (1) consists of at least two housing parts (la, lb), which are preferably connected to overlapping flange of a flange (17) firmly together, particularly preferably are glued.
17. Batterieeinheit (20) mit zumindest einem in einem Batteriegehäuse (1) angeordneten Batteriemodul (7), insbesondere für ein Elektrofahrzeug, mit einer Befestigungseinrichtung (3) für zumindest einen Batteriemodul (7), nach einem der Ansprüche 1 bis 16. 17. Battery unit (20) with at least one in a battery housing (1) arranged battery module (7), in particular for an electric vehicle, with a fastening device (3) for at least one battery module (7), according to one of claims 1 to 16.
2011 11 03 2011 11 03
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