EP2718996A1 - Battery module, battery comprising said battery module and motor vehicle equipped with said battery - Google Patents

Battery module, battery comprising said battery module and motor vehicle equipped with said battery

Info

Publication number
EP2718996A1
EP2718996A1 EP12725750.9A EP12725750A EP2718996A1 EP 2718996 A1 EP2718996 A1 EP 2718996A1 EP 12725750 A EP12725750 A EP 12725750A EP 2718996 A1 EP2718996 A1 EP 2718996A1
Authority
EP
European Patent Office
Prior art keywords
battery
battery module
battery cell
bottom plate
attachment
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.)
Withdrawn
Application number
EP12725750.9A
Other languages
German (de)
French (fr)
Inventor
Holger Fink
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.)
Robert Bosch GmbH
Samsung SDI Co Ltd
Original Assignee
Robert Bosch GmbH
Samsung SDI Co Ltd
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 Robert Bosch GmbH, Samsung SDI Co Ltd filed Critical Robert Bosch GmbH
Publication of EP2718996A1 publication Critical patent/EP2718996A1/en
Withdrawn legal-status Critical Current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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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

Definitions

  • the present invention relates to a battery module, a battery with this
  • the battery module comprises at least one arranged on a bottom plate battery cell, wherein the battery cell and the bottom plate with at least one fastening system are fixedly connected to each other.
  • Battery in each case a plurality of battery cells are combined in a battery module and a plurality of battery modules are in turn arranged in a subunit. The battery is then made up of several of these subunits.
  • a battery module is provided which
  • the fastening system has at least two interlocking fastening partners, wherein the first
  • the battery is preferably one
  • At least one of the attachment partners is forced to elastic deformation during assembly of the battery cell and the bottom plate, from which this springs back when snapping and engages behind the other attachment partner. This advantageously no additional tool for mounting the battery cell is required on the bottom plate.
  • an unambiguous position of the battery cell on the bottom plate of the battery module is advantageously predefined with the fastening system.
  • the assembly process of the battery according to the invention can be easily incorporated into an automated process.
  • the first attachment partner is defined in this application in that it is arranged on the battery cell, and the second attachment partner is defined by being arranged on the bottom plate.
  • At least one positive connection is produced in a direction pointing perpendicularly from the bottom plate by the two fastening partners.
  • Floor plate prevents lifting of the battery cell from the bottom plate.
  • the at least one battery cell has a prismatic shape. This advantageously allows a compact design of the battery module, since in a juxtaposition of the prismatic body no unused
  • Gap arises.
  • the first attachment partner is a projection and the second attachment partner are behind the projection cross-spring arm.
  • the bottom plate heat-dissipating that is a cooling plate.
  • the at least one battery cell is advantageously easier to temper.
  • the first attachment partner is designed in one piece with a housing of the battery cell.
  • the battery cell housing according to the invention is preferably made of a metal
  • the first attachment partner advantageously at the same time has the good strength and rigidity values of the metal. In addition, thus advantageously the number of items is reduced.
  • a biasing force disposed between the battery cell and the bottom plate applying intermediate layer.
  • the fastening system is advantageously additionally secured against loosening of the fastening partner from each other.
  • a battery which comprises at least one battery cell according to the invention in one of the aforementioned embodiments
  • Embodiments has.
  • the advantages of the battery module according to the invention as a component thus also benefit the battery as an assembly.
  • a motor vehicle is further provided with the battery, which has at least one battery cell according to the invention in one of the aforementioned embodiments, wherein the battery with a
  • battery also includes battery systems, accumulators, accumulator batteries, accumulator systems, in particular Li-ion systems or Li-polymer ion systems in this application.
  • FIG. 2 shows a battery module according to the prior art
  • FIG. 3 shows a battery module according to the invention in a schematic diagram
  • FIG. 4 shows a further embodiment of the battery module according to the invention in a schematic diagram
  • FIG. 5 shows a battery cell of the battery module according to the invention in FIG
  • FIG. 1 by way of example and not limitation, the basic construction of a battery 10 according to the prior art is shown.
  • the battery 10 according to the invention has in principle the same basic structure.
  • a plurality of battery cells 16 are combined in a battery module 14.
  • Battery modules 14 are each arranged in a subunit 12. And several subunits 12 form the battery 10 here.
  • the battery 10 comprises only a single subunit 12 or only a single battery module 14.
  • FIG. 2 shows by way of example and not limitation a battery module 14 according to the prior art.
  • the battery module 14 of the battery 10 according to the invention is based on this structure.
  • the battery module 14 has six battery cells 16. There may also be more or fewer than six battery cells 16 per battery module 14. The number of battery cells 16 depends on the required power and
  • the battery cells 16 each have a substantially prismatic base body, preferably a substantially cuboid base body, and are arranged side by side together on a bottom plate 18.
  • the battery module 14 thereby also has a substantially prismatic basic shape, preferably a substantially cuboidal basic shape.
  • the battery cells 16 are with their underside on the battery cells 16
  • Bottom plate 18 mounted, so the body side, the body side
  • Tensioning bands 22 exerted forces on a larger area on the outer battery cells 16th
  • 16 heat conducting plates are arranged between the individual battery cells to better thermally crosslink the individual battery cells 16 together.
  • FIG. 3 shows, in a schematic diagram, by way of example and not limitation, an embodiment of a battery module 14 according to the invention. Shown is a cross section parallel to an end face of the battery module 14.
  • the battery cell 16 and the bottom plate 18 fastening systems 26 on.
  • At least one fastening system 26 is provided.
  • the arrangement of further fastening systems 26 is provided according to the invention. These can also be offset and / or arranged at an angle to each other. Also, it is conceivable that different versions of
  • Mounting systems 26 may be present at the same time.
  • the fastening systems 26 shown in FIG. 3 each have two fastening systems 26
  • the first attachment partner 30 in this application is defined by being arranged on the battery cell 16 and the second attachment partner 32 is defined by being arranged on the bottom plate 18.
  • the fastening systems 26 are preferably on one side of the battery cell 16
  • the first attachment partners 30 are each formed by a projection of the battery cell 16, in particular by a projection of a housing of the battery cell 16.
  • the projections each have a rise and an undercut.
  • the second attachment partner 32 are formed here by a respective spring arm, which is arranged on the bottom plate 18.
  • the spring arm has a substantially elongated shape which is elastically deformable by bending. At its free end, the spring arm is provided with an oblique surface, by which this elastic bending is caused when traveling down the contour of the first fastening partner 30. Behind the slopes, the
  • Befest onlyspartners 30 a positive connection against the mounting direction ago. Lifting the battery cell 16 from the bottom plate 18 is prevented.
  • the spring arms When assembling the battery cell 16 with the bottom plate 18, the spring arms are pushed aside by the contour of the projections, so the climbs and feathers after passing the climbs back to their normal, undeformed position. The projections of the battery cell 16 are thereby engaged behind each of the undercut of the spring arms.
  • FIG. 4 shows, in a schematic diagram, by way of example and not limitation, a further embodiment of the battery module 14 according to the invention. Shown is a cross section parallel to an end face of the battery module 14.
  • the variant of FIG. 4 has an intermediate layer 28 arranged between the battery cell 16 and the bottom plate 18. According to the invention, the intermediate layer 28 is optionally arranged.
  • the intermediate layer 28 exerts a defined biasing force on the battery cell 16 and the bottom plate 18 in the assembled state.
  • the intermediate layer 28 has elastic deformation properties. This is done by the wavy representation in Figure 4 symbolizes. The actual shape of the intermediate layer 28 may differ from that shown.
  • FIG. 5 shows by way of example and not limitation a cross-section of a battery cell 16 of the battery according to the invention.
  • the battery cell 16 has two integrated first attachment partners 30.
  • the number and the arrangement of the fastening partner 30 can vary, it does not have to correspond to the number of second fastening partners 32 of the bottom plate 18 not shown here, so that several possibilities for the location of a fixation of the battery cell 16 are provided on the bottom plate 18.
  • the first attachment partners 30 are exemplarily formed in FIG. 5 as projections. According to the invention, the battery cell 16 and the first
  • Fixing partner 30 preferably designed in one piece. According to the shape of the first attachment partner 30, the second attachment partner 32 are formed corresponding to the first attachment partners 30, so that a locking is possible in a defined position.

Abstract

The invention relates to a battery module which comprises at least one battery cell (16) arranged on a base plate (18). Said battery cell (16) and the base plate (18) are fixed together by means of at least one fixing system (26). Said fixing system (26) comprises at least two fixing elements (30, 32) which engage with each other, the first fixing element (30) being arranged on the battery cell (16) and the second fixing element (32) being arranged on the base plate (18). The invention also relates to a battery (10) comprising at least one battery module (14) of the above-mentioned type and to a motor vehicle equipped with said battery (10).

Description

Beschreibung  description
Titel title
Batteriemodul, Batterie mit diesem Batteriemodul und Kraftfahrzeug mit dieser Batterie  Battery module, battery with this battery module and motor vehicle with this battery
Die vorliegende Erfindung betrifft ein Batteriemodul, eine Batterie mit diesem The present invention relates to a battery module, a battery with this
Batteriemodul und ein Kraftfahrzeug mit dieser Batterie, wobei das Batteriemodul wenigstens eine auf einer Bodenplatte angeordnete Batteriezelle umfasst, wobei die Batteriezelle und die Bodenplatte mit wenigstens einem Befestigungssystem miteinander ortsfest verbunden sind. Battery module and a motor vehicle with this battery, wherein the battery module comprises at least one arranged on a bottom plate battery cell, wherein the battery cell and the bottom plate with at least one fastening system are fixedly connected to each other.
Stand der Technik State of the art
Es ist bekannt, den Grundaufbau einer Batterie so zu gestalten, dass in der It is known to make the basic structure of a battery so that in the
Batterie jeweils mehrere Batteriezellen in einem Batteriemodul zusammengefasst sind und mehrere Batteriemodule wiederum in einer Untereinheit angeordnet sind. Die Batterie ist dann aus mehreren dieser Untereinheiten gebildet. Battery in each case a plurality of battery cells are combined in a battery module and a plurality of battery modules are in turn arranged in a subunit. The battery is then made up of several of these subunits.
Das Zusammenfügen dieser Bauteile zu den Baugruppen erfolgt dabei meist durch Schraub- oder Nietverbindungen, wodurch für den Zusammenbau eine The joining of these components to the modules is usually done by screw or rivet, whereby for the assembly a
Verwendung von Werkzeugen und ein erhöhter Montageaufwand nötig sind.  Use of tools and increased installation costs are needed.
Offenbarung der Erfindung Erfindungsgemäß wird ein Batteriemodul zur Verfügung gestellt, welches DISCLOSURE OF THE INVENTION According to the invention, a battery module is provided which
wenigstens eine auf einer Bodenplatte angeordnete Batteriezelle umfasst. Die Batteriezelle und die Bodenplatte sind mit wenigstens einem Befestigungssystem miteinander ortsfest verbunden. Dabei weist das Befestigungssystem wenigstens zwei ineinander einrastende Befestigungspartner auf, wobei der erste includes at least one arranged on a bottom plate battery cell. The battery cell and the bottom plate are fixedly connected to each other with at least one fastening system. In this case, the fastening system has at least two interlocking fastening partners, wherein the first
Befestigungspartner an der Batteriezelle und der zweite Befestigungspartner an der Bodenplatte angeordnet sind. Die Batterie ist dabei bevorzugt eine Attachment partner to the battery cell and the second attachment partner the bottom plate are arranged. The battery is preferably one
Li-Ionen-Batterie. Li-ion battery.
Hiermit ist es vorteilhaft ermöglicht, die Batteriezelle schnell, einfach und zuverlässig durch Einrasten der wenigstens einen Batteriezelle in die This makes it possible advantageously, the battery cell quickly, easily and reliably by locking the at least one battery cell in the
Bodenplatte zusammenzubauen. Zudem ist vorteilhaft für eine Montage lediglich die Zugänglichkeit aus einer einzigen Richtung erforderlich. Assemble base plate. In addition, it is advantageous for assembly only accessibility from a single direction required.
Durch die Kontur der Befestigungspartner wird beim Zusammenfügen der Batteriezelle und der Bodenplatte wenigstens einer der Befestigungspartner zu einer elastischen Verformung gezwungen, aus welcher dieser beim Einrasten zurückfedert und den anderen Befestigungspartner hintergreift. Dadurch wird vorteilhaft kein zusätzliches Werkzeug für die Montage der Batteriezelle auf der Bodenplatte benötigt. Due to the contour of the attachment partners, at least one of the attachment partners is forced to elastic deformation during assembly of the battery cell and the bottom plate, from which this springs back when snapping and engages behind the other attachment partner. This advantageously no additional tool for mounting the battery cell is required on the bottom plate.
Weiterhin ist mit dem Befestigungssystem vorteilhaft eine eindeutige Position der Batteriezelle auf der Bodenplatte des Batteriemoduls vorgegeben. Damit lässt sich der Montagevorgang der erfindungsgemäßen Batterie leicht in einen automatisierten Prozess einbeziehen. Furthermore, an unambiguous position of the battery cell on the bottom plate of the battery module is advantageously predefined with the fastening system. Thus, the assembly process of the battery according to the invention can be easily incorporated into an automated process.
Der erste Befestigungspartner ist in dieser Anmeldung dadurch definiert, dass er an der Batteriezelle angeordnet ist, und der zweite Befestigungspartner ist dadurch definiert, dass er an der Bodenplatte angeordnet ist. The first attachment partner is defined in this application in that it is arranged on the battery cell, and the second attachment partner is defined by being arranged on the bottom plate.
In einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass durch die zwei Befestigungspartner wenigstens ein Formschluss in einer senkrecht von der Bodenplatte weisenden Richtung hergestellt ist. In a preferred embodiment of the invention, it is provided that at least one positive connection is produced in a direction pointing perpendicularly from the bottom plate by the two fastening partners.
Hiermit ist vorteilhaft direkt nach einer Montage der Batteriezelle auf der This is advantageous directly after mounting the battery cell on the
Bodenplatte ein Abheben der Batteriezelle von der Bodenplatte verhindert. Floor plate prevents lifting of the battery cell from the bottom plate.
In einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die wenigstens eine Batteriezelle eine prismatische Form aufweist. Hiermit ist vorteilhaft eine kompakte Bauweise des Batteriemoduls ermöglicht, da bei einer Aneinanderreihung der prismatischen Körper kein ungenutzter In a preferred embodiment of the invention it is provided that the at least one battery cell has a prismatic shape. This advantageously allows a compact design of the battery module, since in a juxtaposition of the prismatic body no unused
Zwischenraum entsteht. Gap arises.
In einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der erste Befestigungspartner ein Vorsprung und der zweite Befestigungspartner ein hinter den Vorsprung greifender Federarm sind. In a further preferred embodiment of the invention, it is provided that the first attachment partner is a projection and the second attachment partner are behind the projection cross-spring arm.
Hiermit ist ein zweiter Befestigungspartner geschaffen, der aus der Grundform der Bodenplatte herausragt. Der Kern der Bodenplatte bleibt mit einer derartigen Ausführung des Befestigungssystems unberührt. So ist es vorteilhaft ermöglicht, Systeme, Leitungen, insbesondere Kühlleitungen oder dergleichen durch die Bodenplatte zu führen. Hereby, a second attachment partner is created, which protrudes from the basic shape of the bottom plate. The core of the bottom plate remains unaffected with such an embodiment of the fastening system. Thus, it is advantageously possible to lead systems, lines, in particular cooling lines or the like through the bottom plate.
So ist in einer weiteren bevorzugten Ausgestaltung der Erfindung vorgesehen, dass die Bodenplatte wärmeableitend, also eine Kühlplatte ist. Thus, it is provided in a further preferred embodiment of the invention that the bottom plate heat-dissipating, that is a cooling plate.
Mit der Ausgestaltung der Bodenplatte als Kühlplatte ist die wenigstens eine Batteriezelle vorteilhaft leichter zu temperieren. With the configuration of the bottom plate as a cooling plate, the at least one battery cell is advantageously easier to temper.
In einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der erste Befestigungspartner mit einem Gehäuse der Batteriezelle einteilig ausgeführt ist. In a further preferred embodiment of the invention, it is provided that the first attachment partner is designed in one piece with a housing of the battery cell.
Da das Batteriezellengehäuse erfindungsgemäß bevorzugt aus einem Metall gefertigt ist, verfügt der erste Befestigungspartner vorteilhaft gleichzeitig über die guten Festigkeits- und Steifigkeitswerte des Metalls. Zudem ist somit vorteilhaft die Anzahl der Einzelteile verringert. Since the battery cell housing according to the invention is preferably made of a metal, the first attachment partner advantageously at the same time has the good strength and rigidity values of the metal. In addition, thus advantageously the number of items is reduced.
In einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der zweite Befestigungspartner mit der Bodenplatte einteilig ausgeführt ist In a further preferred embodiment of the invention it is provided that the second attachment partner is designed in one piece with the bottom plate
Hiermit ist vorteilhaft die Anzahl der Einzelteile verringert. This advantageously reduces the number of items.
In einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass zwischen der Batteriezelle und der Bodenplatte eine, eine Vorspannkraft zwischen der Batteriezelle und der Bodenplatte aufbringende Zwischenschicht angeordnet ist. In a further preferred embodiment of the invention it is provided that between the battery cell and the bottom plate one, a biasing force disposed between the battery cell and the bottom plate applying intermediate layer.
Hiermit ist das Befestigungssystem vorteilhaft zusätzlich gegen ein Lösen der Befestigungspartner voneinander gesichert. Hereby, the fastening system is advantageously additionally secured against loosening of the fastening partner from each other.
Erfindungsgemäß wird zudem eine Batterie bereitgestellt, welche wenigstens eine erfindungsgemäße Batteriezelle in einer der zuvor genannten According to the invention, a battery is additionally provided which comprises at least one battery cell according to the invention in one of the aforementioned embodiments
Ausgestaltungen aufweist. Die Vorteile des erfindungsgemäßen Batteriemoduls als Bauteil kommen so auch der Batterie als Baugruppe zugute. Embodiments has. The advantages of the battery module according to the invention as a component thus also benefit the battery as an assembly.
Erfindungsgemäß wird weiterhin ein Kraftfahrzeug bereitgestellt mit der Batterie, welche wenigstens eine erfindungsgemäße Batteriezelle in einer der zuvor genannten Ausgestaltungen aufweist, wobei die Batterie mit einem According to the invention a motor vehicle is further provided with the battery, which has at least one battery cell according to the invention in one of the aforementioned embodiments, wherein the battery with a
Antriebssystem des Kraftfahrzeugs verbunden ist. Drive system of the motor vehicle is connected.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben und in der Beschreibung ausgeführt. Advantageous developments of the invention are specified in the subclaims and executed in the description.
Der Begriff Batterie schließt in dieser Anmeldung auch Batteriesysteme, Akkumulatoren, Akkumulatorbatterien, Akkumulatorsysteme, insbesondere Li-Ionen-Systeme oder Li-Polymer-Ionen-Systeme mit ein. The term battery also includes battery systems, accumulators, accumulator batteries, accumulator systems, in particular Li-ion systems or Li-polymer ion systems in this application.
Zeichnungen drawings
Die vorliegende Erfindung wird anhand der Zeichnungen und der nachfolgenden Beschreibung näher erläutert. Es zeigen: The present invention will be explained in more detail with reference to the drawings and the description below. Show it:
Figur 1 den Grundaufbau einer Batterie nach dem Stand der Technik, 1 shows the basic structure of a battery according to the prior art,
Figur 2 ein Batteriemodul nach dem Stand der Technik, FIG. 2 shows a battery module according to the prior art,
Figur 3 ein erfindungsgemäßes Batteriemodul in einer Prinzipskizze, FIG. 3 shows a battery module according to the invention in a schematic diagram,
Figur 4 eine weitere Ausführung des erfindungsgemäßen Batteriemoduls in einer Prinzipskizze, und Figur 5 eine Batteriezelle des erfindungsgemäßen Batteriemoduls im Figure 4 shows a further embodiment of the battery module according to the invention in a schematic diagram, and FIG. 5 shows a battery cell of the battery module according to the invention in FIG
Querschnitt. Cross-section.
Ausführungsformen der Erfindung Embodiments of the invention
In Figur 1 ist beispielhaft und nicht beschränkend der Grundaufbau einer Batterie 10 nach dem Stand der Technik gezeigt. Die erfindungsgemäße Batterie 10 weist prinzipiell den gleichen Grundaufbau auf. In der Batterie 10 sind jeweils mehrere Batteriezellen 16 in einem Batteriemodul 14 zusammengefasst. Mehrere In FIG. 1, by way of example and not limitation, the basic construction of a battery 10 according to the prior art is shown. The battery 10 according to the invention has in principle the same basic structure. In the battery 10, in each case a plurality of battery cells 16 are combined in a battery module 14. Several
Batteriemodule 14 sind jeweils in einer Untereinheit 12 angeordnet. Und mehrere Untereinheiten 12 bilden hier die Batterie 10. Battery modules 14 are each arranged in a subunit 12. And several subunits 12 form the battery 10 here.
Es ist auch möglich, dass die Batterie 10 lediglich eine einzige Untereinheit 12 oder nur ein einziges Batteriemodul 14 umfasst. It is also possible that the battery 10 comprises only a single subunit 12 or only a single battery module 14.
In Figur 2 ist beispielhaft und nicht beschränkend ein Batteriemodul 14 nach dem Stand der Technik gezeigt. Das Batteriemodul 14 der erfindungsgemäßen Batterie 10 beruht auf diesem Aufbau. In der abgebildeten Variante weist das Batteriemodul 14 sechs Batteriezellen 16 auf. Es können auch mehr oder weniger als sechs Batteriezellen 16 pro Batteriemodul 14 sein. Die Anzahl der Batteriezellen 16 richtet sich nach den geforderten Leistungs- und FIG. 2 shows by way of example and not limitation a battery module 14 according to the prior art. The battery module 14 of the battery 10 according to the invention is based on this structure. In the illustrated variant, the battery module 14 has six battery cells 16. There may also be more or fewer than six battery cells 16 per battery module 14. The number of battery cells 16 depends on the required power and
Energieparametern des Batteriemoduls 14 und den Leistungs- und Energy parameters of the battery module 14 and the power and
Energieparametern der einzelnen Batteriezellen 16. Energy parameters of the individual battery cells 16.
Die Batteriezellen 16 weisen jeweils einen im Wesentlichen prismatischen Grundkörper auf, bevorzugt einen im Wesentlichen quaderförmigen Grundkörper, und sind nebeneinander gemeinsam auf einer Bodenplatte 18 angeordnet. Das Batteriemodul 14 weist dadurch ebenfalls eine im Wesentlichen prismatische Grundgestalt auf, bevorzugt eine im Wesentlichen quaderförmige Grundgestalt. The battery cells 16 each have a substantially prismatic base body, preferably a substantially cuboid base body, and are arranged side by side together on a bottom plate 18. The battery module 14 thereby also has a substantially prismatic basic shape, preferably a substantially cuboidal basic shape.
Bevorzugt sind die Batteriezellen 16 dabei mit ihrer Unterseite auf der Preferably, the battery cells 16 are with their underside on the
Bodenplatte 18 montiert, also der Körperseite, die der Körperseite Bottom plate 18 mounted, so the body side, the body side
gegenüberliegt, auf welcher sich die Terminals 34 befinden. Zum Zusammenhalt der einzelnen Batteriezellen 16 sind diese von wenigstens einem Spannband 22 umschlossen. Um dabei die äußeren Batteriezellen 16, also jene, die nur zu einer Seite an eine weitere Batteriezelle 16 grenzen, nicht zu stark zu beanspruchen, sind an den Stirnseiten der Batteriezelle 14 bevorzugt Druckplatten 20 vorgesehen. Die Druckplatten 20 verteilen von den is opposite, on which the terminals 34 are located. For cohesion of the individual battery cells 16, these are enclosed by at least one clamping band 22. In order to not overstress the outer battery cells 16, ie those which only adjoin another battery cell 16 on one side, pressure plates 20 are preferably provided on the end faces of the battery cell 14. The printing plates 20 distribute from the
Spannbändern 22 ausgeübte Kräfte großflächiger auf die äußeren Batteriezellen 16. Tensioning bands 22 exerted forces on a larger area on the outer battery cells 16th
Optional sind zwischen den einzelnen Batteriezellen 16 Wärmeleitbleche angeordnet, um die einzelnen Batteriezellen 16 besser thermisch miteinander zu vernetzen. Optionally, 16 heat conducting plates are arranged between the individual battery cells to better thermally crosslink the individual battery cells 16 together.
Figur 3 zeigt in einer Prinzipskizze beispielhaft und nicht beschränkend eine Ausführung eines erfindungsgemäßen Batteriemoduls 14. Dargestellt ist ein Querschnitt parallel zu einer Stirnseite des Batteriemoduls 14. FIG. 3 shows, in a schematic diagram, by way of example and not limitation, an embodiment of a battery module 14 according to the invention. Shown is a cross section parallel to an end face of the battery module 14.
Gezeigt ist das Batteriemodul 14 mit einer Batteriezelle 16 und einer Bodenplatte 18. In erfindungsgemäßer Ausgestaltung weisen die Batteriezelle 16 und die Bodenplatte 18 Befestigungssysteme 26 auf. Abgebildet sind zwei spiegelbildlich zueinander angeordnete Befestigungssysteme 26. Shown is the battery module 14 with a battery cell 16 and a bottom plate 18. In the inventive design, the battery cell 16 and the bottom plate 18 fastening systems 26 on. Shown are two mirror images of each other arranged fastening systems 26th
Erfindungsgemäß ist wenigstens ein Befestigungssystem 26 vorgesehen. In Abhängigkeit von Größe und Masse der Batteriezelle 16 ist erfindungsgemäß die Anordnung weiterer Befestigungssysteme 26 vorgesehen. Diese können auch versetzt und/oder in einem Winkel zueinander angeordnet sein. Auch ist es erfindungsgemäß denkbar, dass verschiedene Ausführungen von According to the invention, at least one fastening system 26 is provided. Depending on the size and mass of the battery cell 16, the arrangement of further fastening systems 26 is provided according to the invention. These can also be offset and / or arranged at an angle to each other. Also, it is conceivable that different versions of
Befestigungssystemen 26 gleichzeitig vorhanden sein können. Mounting systems 26 may be present at the same time.
Die in Figur 3 gezeigten Befestigungssysteme 26 weisen jeweils zwei The fastening systems 26 shown in FIG. 3 each have two
Befestigungspartner, einen ersten 30 und einen zweiten 32 auf. Dabei ist der erste Befestigungspartner 30 in dieser Anmeldung dadurch definiert, dass er an der Batteriezelle 16 angeordnet ist und der zweite Befestigungspartner 32 ist dadurch definiert, dass er an der Bodenplatte 18 angeordnet ist. Bevorzugt sind die Befestigungssysteme 26 dabei an einer Seite der Batteriezelle 16 Attachment, a first 30 and a second 32 on. In this case, the first attachment partner 30 in this application is defined by being arranged on the battery cell 16 and the second attachment partner 32 is defined by being arranged on the bottom plate 18. In this case, the fastening systems 26 are preferably on one side of the battery cell 16
angeordnet, die seitlich zu der Seite der Batteriezelle 16 mit den Terminals 34 angeordnet ist. Die Gestalt der abgebildeten Befestigungspartner 30 und 32 ist lediglich beispielhaft. In Figur 3 sind die ersten Befestigungspartner 30 jeweils durch einen Vorsprung der Batteriezelle 16, insbesondere durch einen Vorsprung eines Gehäuses der Batteriezelle 16, gebildet. Die Vorsprünge weisen jeweils einen Anstieg und einen Hinterschnitt auf. arranged, which is arranged laterally to the side of the battery cell 16 with the terminals 34. The shape of the illustrated attachment partners 30 and 32 is merely exemplary. In FIG. 3, the first attachment partners 30 are each formed by a projection of the battery cell 16, in particular by a projection of a housing of the battery cell 16. The projections each have a rise and an undercut.
Die zweiten Befestigungspartner 32 sind hier durch jeweils einen Federarm gebildet, der an der Bodenplatte 18 angeordnet ist. Der Federarm weist im Wesentlichen eine längliche Gestalt auf, die durch Biegung elastisch verformbar ist. An seinem freien Ende ist der Federarm mit einer schrägen Fläche versehen, durch welche diese elastische Verbiegung beim Abfahren der Kontur des ersten Befestigungspartners 30 verursacht wird. Hinter der Schrägen weist der The second attachment partner 32 are formed here by a respective spring arm, which is arranged on the bottom plate 18. The spring arm has a substantially elongated shape which is elastically deformable by bending. At its free end, the spring arm is provided with an oblique surface, by which this elastic bending is caused when traveling down the contour of the first fastening partner 30. Behind the slopes, the
Federarm einen Hinterschnitt auf. Dieser stellt beim Einrasten der Spring arm on an undercut. This stops when snapping the
Befestigungspartner 30 und 32 zusammen mit einer Fläche des ersten Attachment partners 30 and 32 together with an area of the first
Befestigungspartners 30 einen Formschluss entgegen der Montagerichtung her. Ein Abheben der Batteriezelle 16 von der Bodenplatte 18 ist damit verhindert. Befestigungspartners 30 a positive connection against the mounting direction ago. Lifting the battery cell 16 from the bottom plate 18 is prevented.
Beim Zusammenfügen der Batteriezelle 16 mit der Bodenplatte 18 werden die Federarme von der Kontur der Vorsprünge, also den Anstiegen beiseite gedrückt und federn nach dem Passieren der Anstiege in ihre normale, unverformte Position zurück. Die Vorsprünge der Batteriezelle 16 sind dadurch jeweils vom Hinterschnitt der Federarme hintergriffen. When assembling the battery cell 16 with the bottom plate 18, the spring arms are pushed aside by the contour of the projections, so the climbs and feathers after passing the climbs back to their normal, undeformed position. The projections of the battery cell 16 are thereby engaged behind each of the undercut of the spring arms.
Figur 4 zeigt in einer Prinzipskizze beispielhaft und nicht beschränkend eine weitere Ausführung des erfindungsgemäßen Batteriemoduls 14. Dargestellt ist ein Querschnitt parallel zu einer Stirnseite des Batteriemoduls 14. FIG. 4 shows, in a schematic diagram, by way of example and not limitation, a further embodiment of the battery module 14 according to the invention. Shown is a cross section parallel to an end face of the battery module 14.
Ergänzend zu der in der Figur 3 gezeigten Ausgestaltung verfügt die Variante der Figur 4 über eine zwischen der Batteriezelle 16 und der Bodenplatte 18 angeordnete Zwischenschicht 28. Die Zwischenschicht 28 ist erfindungsgemäß optional angeordnet. In addition to the embodiment shown in FIG. 3, the variant of FIG. 4 has an intermediate layer 28 arranged between the battery cell 16 and the bottom plate 18. According to the invention, the intermediate layer 28 is optionally arranged.
Die Zwischenschicht 28 übt eine definierte Vorspannkraft auf die Batteriezelle 16 und die Bodenplatte 18 in montiertem Zustand aus. Die Zwischenschicht 28 weist dabei elastische Verformungseigenschaften auf. Dies wird durch die wellenförmige Darstellung in Figur 4 symbolisiert. Die tatsächliche Gestalt der Zwischenschicht 28 kann von der dargestellten abweichen. The intermediate layer 28 exerts a defined biasing force on the battery cell 16 and the bottom plate 18 in the assembled state. The intermediate layer 28 has elastic deformation properties. This is done by the wavy representation in Figure 4 symbolizes. The actual shape of the intermediate layer 28 may differ from that shown.
Figur 5 zeigt beispielhaft und nicht beschränkend einen Querschnitt einer Batteriezelle 16 der erfindungsgemäßen Batterie. Die Batteriezelle 16 weist zwei integrierte erste Befestigungspartner 30 auf. Die Zahl und die Anordnung der Befestigungspartner 30 kann dabei variieren, sie muss nicht der Anzahl an zweiten Befestigungspartnern 32 der hier nicht mit abgebildeten Bodenplatte 18 entsprechen, so dass mehrere Möglichkeiten für den Ort einer Fixierung der Batteriezelle 16 auf der Bodenplatte 18 geschaffen sind. FIG. 5 shows by way of example and not limitation a cross-section of a battery cell 16 of the battery according to the invention. The battery cell 16 has two integrated first attachment partners 30. The number and the arrangement of the fastening partner 30 can vary, it does not have to correspond to the number of second fastening partners 32 of the bottom plate 18 not shown here, so that several possibilities for the location of a fixation of the battery cell 16 are provided on the bottom plate 18.
Die ersten Befestigungspartner 30 sind in Figur 5 beispielhaft als Vorsprünge ausgeformt. Erfindungsgemäß sind die Batteriezelle 16 und die ersten The first attachment partners 30 are exemplarily formed in FIG. 5 as projections. According to the invention, the battery cell 16 and the first
Befestigungspartner 30 bevorzugt einteilig ausgeführt. Entsprechend der Form der ersten Befestigungspartner 30 sind die zweiten Befestigungspartner 32 korrespondierend zu den ersten Befestigungspartnern 30 ausgebildet, so dass ein Einrasten in definierter Position ermöglicht ist. Fixing partner 30 preferably designed in one piece. According to the shape of the first attachment partner 30, the second attachment partner 32 are formed corresponding to the first attachment partners 30, so that a locking is possible in a defined position.

Claims

Ansprüche claims
Batteriemodul (14) mit wenigstens einer auf einer Bodenplatte (18) angeordneten Batteriezelle (16), wobei die Batteriezelle (16) und die Battery module (14) with at least one on a bottom plate (18) arranged battery cell (16), wherein the battery cell (16) and the
Bodenplatte (18) mit wenigstens einem Befestigungssystem (26) miteinander ortsfest verbunden sind, dadurch gekennzeichnet, dass  Base plate (18) with at least one fastening system (26) are fixedly connected to each other, characterized in that
das Befestigungssystem (26) wenigstens zwei ineinander einrastende und einen Formschluss herstellende Befestigungspartner (30, 32) aufweist, wobei der erste Befestigungspartner (30) an der Batteriezelle (16) und der zweite Befestigungspartner (32) an der Bodenplatte (18) angeordnet ist.  the fastening system (26) has at least two fastening partners (30, 32) which snap into one another and form a positive fit, wherein the first attachment partner (30) is arranged on the battery cell (16) and the second attachment partner (32) on the bottom plate (18).
Batteriemodul (14) nach Anspruch 1 , wobei durch die zwei The battery module (14) of claim 1, wherein the two
Befestigungspartner (30, 32) wenigstens ein Formschluss in einer senkrecht von der Bodenplatte (18) weisenden Richtung hergestellt ist.  Attachment (30, 32) at least one positive connection in a direction perpendicular from the bottom plate (18) direction is made.
Batteriemodul (14) nach Anspruch 1 oder 2, wobei die wenigstens eine Batteriezelle (16) eine prismatische Form aufweist. The battery module (14) of claim 1 or 2, wherein the at least one battery cell (16) has a prismatic shape.
Batteriemodul (14) nach einem der vorhergehenden Ansprüche, wobei der erste Befestigungspartner (30) ein Vorsprung und der zweite Battery module (14) according to one of the preceding claims, wherein the first attachment partner (30) has a projection and the second
Befestigungspartner (32) ein hinter den Vorsprung greifender Federarm ist.  Mounting partner (32) is a behind the projection cross spring arm.
Batteriemodul (14) nach einem der vorhergehenden Ansprüche, wobei der erste Befestigungspartner (30) mit einem Gehäuse der Batteriezelle (16) einteilig ausgeführt ist. Battery module (14) according to one of the preceding claims, wherein the first attachment partner (30) with a housing of the battery cell (16) is made in one piece.
Batteriemodul (14) nach einem der vorhergehenden Ansprüche, wobei der zweite Befestigungspartner (32) mit der Bodenplatte (18) einteilig ausgeführt ist. Battery module (14) according to one of the preceding claims, wherein the second attachment partner (32) with the bottom plate (18) is made in one piece.
7. Batteriemodul (14) nach einem der vorhergehenden Ansprüche, wobei zwischen der Batteriezelle (16) und der Bodenplatte (18) eine, eine Vorspannkraft zwischen der Batteriezelle (16) und der Bodenplatte (18) aufbringende Zwischenschicht (28) angeordnet ist. 7. battery module (14) according to any one of the preceding claims, wherein between the battery cell (16) and the bottom plate (18), a biasing force between the battery cell (16) and the bottom plate (18) applying intermediate layer (28) is arranged.
8. Batterie (10) mit wenigstens einem Batteriemodul (14) nach einem der Ansprüche 1 bis 7. 8. Battery (10) with at least one battery module (14) according to one of claims 1 to 7.
9. Kraftfahrzeug mit einer Batterie (10) mit wenigstens einem Batteriemodul (14) nach einem der Ansprüche 1 bis 8, wobei die Batterie (10) mit einem Antriebssystem des Kraftfahrzeugs verbunden ist. 9. Motor vehicle with a battery (10) with at least one battery module (14) according to one of claims 1 to 8, wherein the battery (10) is connected to a drive system of the motor vehicle.
EP12725750.9A 2011-06-10 2012-06-04 Battery module, battery comprising said battery module and motor vehicle equipped with said battery Withdrawn EP2718996A1 (en)

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DE102011077331A DE102011077331A1 (en) 2011-06-10 2011-06-10 Battery module, battery with this battery module and motor vehicle with this battery
PCT/EP2012/060483 WO2012168178A1 (en) 2011-06-10 2012-06-04 Battery module, battery comprising said battery module and motor vehicle equipped with said battery

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US11075423B2 (en) 2016-07-07 2021-07-27 Samsung Sdi Co., Ltd. Battery submodule carrier, battery submodule, battery system and vehicle
US11139521B2 (en) 2016-07-07 2021-10-05 Samsung Sdi Co., Ltd. Battery submodule carrier, battery submodule, battery system and vehicle
DE102017204531A1 (en) * 2017-03-17 2018-09-20 Volkswagen Aktiengesellschaft Arrangement for fixing a battery cell and / or a cell pack and battery housing with at least one such arrangement
DE102021116017A1 (en) 2021-06-21 2022-12-22 Webasto SE Battery module for constructing a battery for a vehicle

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