WO2021254905A1 - Battery module - Google Patents

Battery module Download PDF

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Publication number
WO2021254905A1
WO2021254905A1 PCT/EP2021/065785 EP2021065785W WO2021254905A1 WO 2021254905 A1 WO2021254905 A1 WO 2021254905A1 EP 2021065785 W EP2021065785 W EP 2021065785W WO 2021254905 A1 WO2021254905 A1 WO 2021254905A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery cells
intermediate element
battery module
wave
Prior art date
Application number
PCT/EP2021/065785
Other languages
German (de)
French (fr)
Inventor
Fabian Hauser
Andreas Gleiter
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2021254905A1 publication Critical patent/WO2021254905A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • 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

  • Battery module The invention is based on a battery module with a plurality of cylindrical
  • Battery cells a method for producing a battery module and a use of the battery module according to the preamble of the independent claims.
  • Round cells are usually used in light electric vehicles. These cells are usually held in place by plastic frames that enclose spaces. In batteries for light electric vehicles, for example eScooters, an active cooling system is often not used, which is why the heat loss must be kept low. This limits the use of batteries, since the
  • the document JP H09-306447 discloses a battery pack with separating plates which electrically isolate each of the battery rows and radiate generated heat from the respective battery rows.
  • the document EP 1274137 A1 discloses a battery pack containing a plurality of cells which are stacked one on top of the other in layers and a heat collecting plate made of a corrugated metal sheet, which is arranged between the levels of the cells.
  • the procedure according to the invention with the characterizing features of the independent claims has the advantage that the battery module further comprises:
  • a battery cell holder for receiving the battery cells
  • At least one wave-shaped intermediate element along the battery cells the wave-shaped intermediate element at least partially enclosing the battery cells; - wherein the wave-shaped intermediate element forms a thermal bridge between the battery cells and the battery module housing;
  • the corrugated intermediate element supports the battery cells, preferably in the radial direction of the battery cells.
  • the wave-shaped intermediate element achieves a significantly better thermal transition between the battery cells and the battery module housing, which means, for example, that more power can be drawn from the battery module and / or power can be fed into the battery module.
  • the wave-shaped intermediate element rests at least partially on the battery cells and / or the battery module housing. As a result, cavities between the battery cells and the battery cell holder are filled, as a result of which heat can be better dissipated from the battery cells and the battery cells are supported.
  • the wave-shaped intermediate element has a polygon as its basic shape, which allows free cavities to be closed between the battery cells.
  • the battery cells in the battery cell holder are arranged in essentially straight battery cell rows, the battery cell rows being arranged parallel to one another and being spaced apart from one another by the battery cell holder. This achieves a compact design for the battery module. Furthermore, the battery cells can be electrically connected in series and / or in parallel by means of battery cell connectors.
  • the battery cell holder comprises clamping and / or snap hooks for the form-fitting connection of the battery cells to the battery cell holder. A particularly vibration-proof mounting of the battery cells is achieved in this way.
  • the wave-shaped intermediate element is electrically insulating. This prevents leakage currents and improves the protection against accidental contact.
  • the corrugated intermediate element is hardly inflammable and / or self-extinguishing. This effectively prevents a fire from spreading to the neighboring battery cells and thus prevents the battery module from thermal runaway.
  • the wave-shaped intermediate element comprises an epoxy resin, a plastic, acrylate, polyurethane and / or ceramic.
  • the corrugated intermediate element has a certain flexible mechanical nature.
  • a method according to the invention for producing a battery module comprises the following steps: a.) Inserting a plurality of battery cells into a battery cell holder, whereby a non-positive and positive connection is created between the battery cells and the battery cell holder; b.) Electrical contacting of the battery cells with electrically conductive ones
  • a battery module according to the invention is advantageously used in electrical energy storage devices for electric vehicles, fuel cell vehicles, hybrid vehicles, plug-in hybrid vehicles, aircraft, pedelecs or e-bikes, for portable devices for telecommunications or data processing, for electric hand tools or kitchen appliances, and in stationary storage devices for storage in particular regeneratively generated electrical energy.
  • Figure 1 is a schematic representation of a first embodiment of an intermediate element according to the invention.
  • FIG. 2 shows a first schematic representation of an embodiment of a battery module according to the invention.
  • FIG. 3 shows a second schematic illustration of an embodiment of a battery module according to the invention.
  • Figure 1 shows a schematic representation of a first embodiment of an intermediate element 100 according to the invention.
  • the intermediate element 100 according to the invention comprises a wave-shaped region 101 for partially enclosing battery cells 103 (1), 103 (2), 103 (n), 104 (1) ), 104 (2), 104 (n) and a cuboid area 102 for forming a thermal bridge between the battery cells 103 (1), 103 (2),
  • FIG. 2 shows a first schematic representation of an embodiment of a battery module according to the invention.
  • a battery cell holder 200 preferably made in several parts, comprises a multiplicity of recesses 202 for receiving battery cells, which are positively locked by clamping hooks 203 in the battery cell holder
  • the battery cell holder 200 has interspaces into which at least one wave-shaped intermediate element 201 is inserted.
  • This wave-shaped intermediate element 201 can advantageously be pushed into a battery module as an additional element, so that an adaptation to other parts of the battery module is not necessary.
  • the support of the battery cells in the radial direction provides effective protection against lateral bursting of battery cells in the event of a battery cell fire, which effectively prevents the fire from spreading to the neighboring battery cells and thus preventing the battery module from thermal runaway.
  • FIG. 3 shows a second schematic illustration of an embodiment of a battery module 300 according to the invention.
  • the battery module 300 comprises a battery module housing 301, preferably made of an extruded aluminum profile.
  • a battery cell holder (not shown) comprises a plurality of battery cells 302 (1), 302 (2), 302 (n) and a plurality of intermediate elements 303 (1), 303 (m) according to the invention, which extend in the longitudinal direction of the battery cells 302 (1), 302 (2), 302 (n) are extended and they touch the battery module housing 301. This creates a thermal bridge, which removes heat from the battery cells
  • 302 (1), 302 (2), 302 (n) can be discharged via the battery module housing 301.

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

Abstract

The invention relates to a battery module having a plurality of cylindrical battery cells, comprising: - a battery module housing; - a battery cell holder to accommodate the battery cells; - at least one corrugated intermediate element along the battery cells, - the corrugated intermediate element at least partially surrounding the battery cells; - the corrugated intermediate element forming a thermal bridge between the battery cells and the battery module housing; - the corrugated intermediate element supporting the battery cells, preferably in the radial direction of the battery cells.

Description

Beschreibung description
Titel title
Bateriemodul Die Erfindung geht aus von einem Bateriemodul mit einer Mehrzahl von zylindrischenBattery module The invention is based on a battery module with a plurality of cylindrical
Bateriezellen, einem Verfahren zur Herstellung eines Batteriemoduls sowie einer Verwendung des Batteriemoduls gemäß dem Oberbegriff der unabhängigen Ansprüche. Battery cells, a method for producing a battery module and a use of the battery module according to the preamble of the independent claims.
Stand der Technik State of the art
Bei Elektro-Leichtfahrzeugen kommen in der Regel Rundzellen zum Einsatz. Die Halterung dieser Zellen erfolgt meist durch Kunststoffrahmen, die Zwischenräume umfassen. In Batterien für Elektro-Leichtfahrzeuge, beispielsweise eScooter, wird häufig kein aktives Kühlsystem verwendet, weshalb die Verlustwärme geringgehalten werden muss. Das beschränkt den Einsatz der Baterien, da dieRound cells are usually used in light electric vehicles. These cells are usually held in place by plastic frames that enclose spaces. In batteries for light electric vehicles, for example eScooters, an active cooling system is often not used, which is why the heat loss must be kept low. This limits the use of batteries, since the
Bateriezellen eine deutlich höhere Leistung abgeben könnten. Battery cells could deliver a significantly higher output.
Das Dokument JP H09-306447 offenbart einen Bateriepack mit Trennplaten, die jede der Batteriereihen elektrisch isolieren und erzeugte Wärme von den jeweiligen Batteriereihen abstrahlen. Das Dokument EP 1274137 Al offenbart einen Batteriepack enthaltend mehrere Zellen, die in Schichten übereinandergestapelt sind sowie eine Wärmesammelplatte aus einem wellenförmigen Metallblech, die zwischen den Ebenen der Zellen angeordnet ist. The document JP H09-306447 discloses a battery pack with separating plates which electrically isolate each of the battery rows and radiate generated heat from the respective battery rows. The document EP 1274137 A1 discloses a battery pack containing a plurality of cells which are stacked one on top of the other in layers and a heat collecting plate made of a corrugated metal sheet, which is arranged between the levels of the cells.
Das Dokument US 2011/305930 offenbart einen Batteriepack umfassend eine Batteriegruppe mit Batteriereihen. Es ist Aufgabe der vorliegenden Erfindung, den Stand der Technik weiter zu verbessern. Diese Aufgabe wird gelöst durch die Merkmale der unabhängigen Ansprüche. Document US 2011/305930 discloses a battery pack comprising a battery group with battery rows. It is the object of the present invention to further improve the state of the art. This object is achieved by the features of the independent claims.
Offenbarung der Erfindung Disclosure of the invention
Vorteile der Erfindung Advantages of the invention
Die erfindungsgemäße Vorgehensweise mit den kennzeichnenden Merkmalen der unabhängigen Ansprüche weist demgegenüber den Vorteil auf, dass das Batteriemodul ferner umfasst: In contrast, the procedure according to the invention with the characterizing features of the independent claims has the advantage that the battery module further comprises:
- ein Batteriemodulgehäuse; - a battery module housing;
- einen Batteriezellhalter zum Aufnehmen der Batteriezellen; - A battery cell holder for receiving the battery cells;
- mindestens ein wellenförmiges Zwischenelement entlang der Batteriezellen, wobei das wellenförmige Zwischenelement die Batteriezellen zumindest teilweise umschließt; - wobei das wellenförmige Zwischenelement eine thermische Brücke zwischen den Batteriezellen und dem Batteriemodulgehäuse ausbildet; - At least one wave-shaped intermediate element along the battery cells, the wave-shaped intermediate element at least partially enclosing the battery cells; - wherein the wave-shaped intermediate element forms a thermal bridge between the battery cells and the battery module housing;
- wobei das wellenförmige Zwischenelement die Batteriezellen, vorzugsweise in radialer Richtung der Batteriezellen, abstützt. - wherein the corrugated intermediate element supports the battery cells, preferably in the radial direction of the battery cells.
Durch das wellenförmige Zwischenelement wird ein wesentlich besserer thermischer Übergang zwischen den Batteriezellen und dem Batteriemodulgehäuse erreicht, wodurch beispielsweise eine höhere Leistungsentnahme aus dem Batteriemodul und/oder Leistungszufuhr in das Batteriemodul möglich ist. The wave-shaped intermediate element achieves a significantly better thermal transition between the battery cells and the battery module housing, which means, for example, that more power can be drawn from the battery module and / or power can be fed into the battery module.
Weiter wird durch das Abstützen der Batteriezellen in radialer Richtung ein wirksamer Schutz („Propagationssicherheit“) gegen seitliches Aufplatzen einer Batteriezelle im Falle eines Batteriezellbrands bewirkt, wodurch ein Übergreifen eines Brandes auf die benachbarten Batteriezellen und somit ein thermisches Durchgehen des Batteriemoduls wirksam verhindert werden. Furthermore, by supporting the battery cells in the radial direction, effective protection ("propagation security") against lateral bursting of a battery cell in the event of a battery cell fire is achieved, which effectively prevents a fire from spreading to the neighboring battery cells and thus a thermal runaway of the battery module.
Weitere vorteilhafte Ausführungsformen sind Gegenstand der Unteransprüche. Further advantageous embodiments are the subject of the subclaims.
Das wellenförmige Zwischenelement liegt zumindest teilweise an den Batteriezellen und/oder dem Batteriemodulgehäuse an. Dadurch werden Hohlräume zwischen den Batteriezellen und dem Batteriezellhalter aufgefüllt, wodurch Wärme von den Batteriezellen besser abgeleitet werden kann und die Batteriezellen abgestützt werden. The wave-shaped intermediate element rests at least partially on the battery cells and / or the battery module housing. As a result, cavities between the battery cells and the battery cell holder are filled, as a result of which heat can be better dissipated from the battery cells and the battery cells are supported.
Das wellenförmige Zwischenelement weist ein Polygon als Grundform auf, dadurch können freie Hohlräume zwischen den Batteriezellen geschlossen werden. Die Batteriezellen im Batteriezellhalter sind in im Wesentlichen geraden Batteriezellreihen angeordnet, wobei die Batteriezellreihen parallel zueinander angeordnet sind und durch den Batteriezellhalter voneinander beabstandet sind. Dadurch wird eine kompakte Bauform des Batteriemoduls erreicht. Weiter können die Batteriezellen durch Batteriezellverbinder elektrisch in Serie und/oder parallel verschaltet werden. The wave-shaped intermediate element has a polygon as its basic shape, which allows free cavities to be closed between the battery cells. The battery cells in the battery cell holder are arranged in essentially straight battery cell rows, the battery cell rows being arranged parallel to one another and being spaced apart from one another by the battery cell holder. This achieves a compact design for the battery module. Furthermore, the battery cells can be electrically connected in series and / or in parallel by means of battery cell connectors.
Der Batteriezellehalter umfasst Spann- und/oder Schnapphaken zum formschlüssigen Verbinden der Batteriezellen mit dem Batteriezellhalter. Dadurch wird eine besonders rüttelfeste Halterung der Batteriezellen erreicht. The battery cell holder comprises clamping and / or snap hooks for the form-fitting connection of the battery cells to the battery cell holder. A particularly vibration-proof mounting of the battery cells is achieved in this way.
Das wellenförmige Zwischenelement ist elektrisch isolierend. Dadurch können Kriechströme verhindert und eine Verbesserung des Berührschutzes erreicht werden. The wave-shaped intermediate element is electrically insulating. This prevents leakage currents and improves the protection against accidental contact.
Das wellenförmige Zwischenelement ist schwer entflammbar und/oder selbstverlöschend. Dadurch wird ein Übergreifen eines Brandes auf die benachbarten Batteriezellen und somit ein thermisches Durchgehen des Batteriemoduls wirksam verhindert. The corrugated intermediate element is hardly inflammable and / or self-extinguishing. This effectively prevents a fire from spreading to the neighboring battery cells and thus prevents the battery module from thermal runaway.
Das wellenförmige Zwischenelement umfasst ein Epoxidharz, einen Kunststoff, Acrylat, Polyurethan und/oder Keramik. Dadurch weist das wellenförmige Zwischenelement eine gewisse flexible mechanische Beschaffenheit auf. The wave-shaped intermediate element comprises an epoxy resin, a plastic, acrylate, polyurethane and / or ceramic. As a result, the corrugated intermediate element has a certain flexible mechanical nature.
Ein erfindungsgemäßes Verfahren zur Herstellung eines Batteriemoduls umfasst folgende Schritte: a.) Einsetzen einer Mehrzahl von Batteriezellen in einen Batteriezellhalter, wodurch eine kraft- und formschlüssige Verbindung zwischen den Batteriezellen und dem Batteriezellhalter entsteht; b.) Elektrisches Kontaktieren der Batteriezellen mit elektrisch leitendenA method according to the invention for producing a battery module comprises the following steps: a.) Inserting a plurality of battery cells into a battery cell holder, whereby a non-positive and positive connection is created between the battery cells and the battery cell holder; b.) Electrical contacting of the battery cells with electrically conductive ones
Batteriezellverbindern; c.) Einschieben mindestens eines wellenförmigen Zwischenelements inBattery cell connectors; c.) inserting at least one wave-shaped intermediate element in
Längsrichtung der Batteriezellen, wodurch das wellenförmige Zwischenelement die Batteriezellen teilweise umschließt und an den Batteriezellen anliegt; d.) Einsetzen des Batteriezellhalters in ein Batteriemodulgehäuse; e.) Elektrisches Kontaktieren der Batteriezellverbinder mit elektrischenLongitudinal direction of the battery cells, whereby the wave-shaped intermediate element partially surrounds the battery cells and rests against the battery cells; d.) inserting the battery cell holder into a battery module housing; e.) Electrical contacting of the battery cell connector with electrical
Anschlusspolen des Batteriemoduls. Connection poles of the battery module.
Das erfindungsgemäße Verfahren ist nicht auf die dargestellte Reihenfolge der Ausführungsform beschränkt. Vielmehr können die Schritte a bis c in beliebigerThe method according to the invention is not restricted to the illustrated sequence of the embodiment. Rather, steps a to c can be performed in any way
Reihenfolge, wiederholt, zeitlich nacheinander und/oder gleichzeitig erfolgen. Sequence, repeated, sequentially and / or simultaneously.
Vorteilhafterweise findet ein erfindungsgemäßes Batteriemodul Verwendung in elektrischen Energiespeichern für Elektrofahrzeuge, Brennstoffzellenfahrzeuge, Hybridfahrzeuge, Plug-In-Hybridfahrzeuge, Luftfahrzeuge, Pedelecs oder E-Bikes, für portable Einrichtungen zur Telekommunikation oder Datenverarbeitung, für elektrische Handwerkzeuge oder Küchenmaschinen, sowie in stationären Speichern zur Speicherung insbesondere regenerativ gewonnener elektrischer Energie. A battery module according to the invention is advantageously used in electrical energy storage devices for electric vehicles, fuel cell vehicles, hybrid vehicles, plug-in hybrid vehicles, aircraft, pedelecs or e-bikes, for portable devices for telecommunications or data processing, for electric hand tools or kitchen appliances, and in stationary storage devices for storage in particular regeneratively generated electrical energy.
Kurzbeschreibung der Figuren Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Brief description of the figures Embodiments of the invention are shown in the drawing and explained in more detail in the description below.
Es zeigen: Show it:
Figur 1 eine schematische Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Zwischenelements; und Figure 1 is a schematic representation of a first embodiment of an intermediate element according to the invention; and
Figur 2 eine erste schematische Darstellung einer Ausführungsform eines erfindungsgemäßen Batteriemoduls; und FIG. 2 shows a first schematic representation of an embodiment of a battery module according to the invention; and
Figur 3 eine zweite schematische Darstellung einer Ausführungsform eines erfindungsgemäßen Batteriemoduls. FIG. 3 shows a second schematic illustration of an embodiment of a battery module according to the invention.
Detaillierte Beschreibung der Ausführungsbeispiele Detailed description of the exemplary embodiments
Gleiche Bezugszeichen bezeichnen in allen Figuren gleiche Vorrichtungskomponenten. Figur 1 zeigt eine schematische Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Zwischenelements 100. Das erfindungsgemäße Zwischenelement 100 umfasst in der gezeigten Ausführungsform einen wellenförmigen Bereich 101 zum teilweisen Umschließen von Batteriezellen 103(1), 103(2), 103(n), 104(1), 104(2), 104(n) und einen quaderförmigen Bereich 102 zum Ausbilden einer thermischen Brücke zwischen den Batteriezellen 103(1), 103(2),The same reference symbols denote the same device components in all figures. Figure 1 shows a schematic representation of a first embodiment of an intermediate element 100 according to the invention. In the embodiment shown, the intermediate element 100 according to the invention comprises a wave-shaped region 101 for partially enclosing battery cells 103 (1), 103 (2), 103 (n), 104 (1) ), 104 (2), 104 (n) and a cuboid area 102 for forming a thermal bridge between the battery cells 103 (1), 103 (2),
103(n), 104(1), 104(2), 104(n) und einem Batteriemodulgehäuse. Figur 2 zeigt eine erste schematische Darstellung einer Ausführungsform eines erfindungsgemäßen Batteriemoduls. Ein Batteriezellhalter 200, vorzugsweise mehrteilig ausgeführt, umfasst eine Vielzahl von Aussparungen 202 zur Aufnahme von Batteriezellen, die von Spannhaken 203 formschlüssig in dem Batteriezellhalter103 (n), 104 (1), 104 (2), 104 (n) and a battery module housing. Figure 2 shows a first schematic representation of an embodiment of a battery module according to the invention. A battery cell holder 200, preferably made in several parts, comprises a multiplicity of recesses 202 for receiving battery cells, which are positively locked by clamping hooks 203 in the battery cell holder
200 gehalten werden. Der Batteriezellhalter 200 weist Zwischenräume auf, in denen zumindest ein wellenförmiges Zwischenelement 201 eingeschoben wird. Dieses wellenförmige Zwischenelement 201 ist vorteilhafterweise als zusätzliches Element in ein Batteriemodul einschiebbar, wodurch eine Anpassung an anderen Teilen des Batteriemoduls nicht notwendig ist. 200 are held. The battery cell holder 200 has interspaces into which at least one wave-shaped intermediate element 201 is inserted. This wave-shaped intermediate element 201 can advantageously be pushed into a battery module as an additional element, so that an adaptation to other parts of the battery module is not necessary.
Das Abstützen der Batteriezellen in radialer Richtung bewirkt einen wirksamen Schutz gegen seitliches Aufplatzen von Batteriezellen im Falle eines Batteriezellbrands, wodurch ein Übergreifen eines Brandes auf die benachbarten Batteriezellen und somit ein thermisches Durchgehen des Batteriemoduls wirksam verhindert werden. The support of the battery cells in the radial direction provides effective protection against lateral bursting of battery cells in the event of a battery cell fire, which effectively prevents the fire from spreading to the neighboring battery cells and thus preventing the battery module from thermal runaway.
Figur 3 zeigt eine zweite schematische Darstellung einer Ausführungsform eines erfindungsgemäßen Batteriemoduls 300. Das Batteriemodul 300 umfasst ein Batteriemodulgehäuse 301, vorzugsweise aus einem Aluminium Strangpressprofil.FIG. 3 shows a second schematic illustration of an embodiment of a battery module 300 according to the invention. The battery module 300 comprises a battery module housing 301, preferably made of an extruded aluminum profile.
Ein nicht dargestellter Batteriezellhalter umfasst eine Vielzahl von Batteriezellen 302(1), 302(2), 302(n) sowie eine Mehrzahl von erfindungsgemäßen Zwischenelementen 303(1), 303(m), die in Längsrichtung der Batteriezellen 302(1), 302(2), 302(n) verlängert sind und diese das Batteriemodulgehäuse 301 berühren. Dadurch entsteht eine thermische Brücke, wodurch Wärme aus den BatteriezellenA battery cell holder (not shown) comprises a plurality of battery cells 302 (1), 302 (2), 302 (n) and a plurality of intermediate elements 303 (1), 303 (m) according to the invention, which extend in the longitudinal direction of the battery cells 302 (1), 302 (2), 302 (n) are extended and they touch the battery module housing 301. This creates a thermal bridge, which removes heat from the battery cells
302(1), 302(2), 302(n) über das Batteriemodulgehäuse 301 abgeführt werden kann. 302 (1), 302 (2), 302 (n) can be discharged via the battery module housing 301.

Claims

Ansprüche Expectations
1. Batteriemodul (300) mit einer Mehrzahl von zylindrischen Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)), umfassend: 1. Battery module (300) with a plurality of cylindrical battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 ( 2), 302 (n)), comprising:
- ein Batteriemodulgehäuse (301); - einen Batteriezellhalter (200) zum Aufnehmen der Batteriezellen (103(1), 103(2),- A battery module housing (301); - a battery cell holder (200) for receiving the battery cells (103 (1), 103 (2),
103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)); 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)) ;
- mindestens ein wellenförmiges Zwischenelement (100, 201, 303(1), 303(m)) entlang der Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)), - wobei das wellenförmige Zwischenelement die Batteriezellen (103(1), 103(2),- At least one wave-shaped intermediate element (100, 201, 303 (1), 303 (m)) along the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)), - wherein the wave-shaped intermediate element is the battery cells (103 (1), 103 (2),
103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) zumindest teilweise umschließt; 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)) at least partially;
- wobei das wellenförmige Zwischenelement eine thermische Brücke zwischen den Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) und dem Batteriemodulgehäuse (301) ausbildet; - wherein the corrugated intermediate element forms a thermal bridge between the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2 ), 302 (n)) and the battery module housing (301);
- wobei das wellenförmige Zwischenelement die Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)), vorzugsweise in radialer Richtung der Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)), abstützt. - wherein the corrugated intermediate element is the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 ( n)), preferably in the radial direction of the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2) , 302 (n)).
2. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei das wellenförmige Zwischenelement zumindest teilweise an den Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) und/oder dem Batteriemodulgehäuse (301) anliegt. 2. Battery module (300) according to one of the preceding claims, wherein the wave-shaped intermediate element at least partially on the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n ), 302 (1), 302 (2), 302 (n)) and / or the battery module housing (301).
3. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei das wellenförmige Zwischenelement ein Polygon als Grundform aufweist. 3. Battery module (300) according to one of the preceding claims, wherein the wave-shaped intermediate element has a polygon as a basic shape.
4. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei die Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) im Batteriezellhalter (200) in im Wesentlichen geraden Batteriezellreihen angeordnet sind, wobei die Batteriezellreihen parallel zueinander angeordnet sind und durch den Batteriezellhalter (200) voneinander beabstandet sind; 4. Battery module (300) according to one of the preceding claims, wherein the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1) , 302 (2), 302 (n)) are arranged in the battery cell holder (200) in essentially straight battery cell rows, the battery cell rows being arranged parallel to one another and being spaced apart from one another by the battery cell holder (200);
5. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei der Batteriezellhalter (200) Spannhaken und/oder Schnapphaken (203) umfassen; 5. Battery module (300) according to one of the preceding claims, wherein the battery cell holder (200) comprise clamping hooks and / or snap hooks (203);
6. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei das wellenförmige Zwischenelement elektrisch isolierend ist. 6. battery module (300) according to any one of the preceding claims, wherein the wave-shaped intermediate element is electrically insulating.
7. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei das wellenförmige Zwischenelement schwer entflammbar und/oder selbstverlöschend ist. 7. Battery module (300) according to one of the preceding claims, wherein the wave-shaped intermediate element is flame-retardant and / or self-extinguishing.
8. Batteriemodul (300) gemäß einem der vorhergehenden Ansprüche, wobei das wellenförmige Zwischenelement ein Epoxidharz, einen Kunststoff, Acrylat, Polyurethan und/oder Keramik umfasst. 8. battery module (300) according to any one of the preceding claims, wherein the wave-shaped intermediate element comprises an epoxy resin, a plastic, acrylate, polyurethane and / or ceramic.
9. Verfahren zur Herstellung eines Batteriemoduls (300) gemäß einem der Ansprüche 1 bis 8 umfassend folgende Schritte: a.) Einsetzen einer Mehrzahl von Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) in einen Batteriezellhalter (200), wodurch eine kraft- und formschlüssige Verbindung zwischen den Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) und dem Batteriezellhalter (200) entsteht; b.) Elektrisches Kontaktieren der Batteriezellen (103(1), 103(2), 103(n), 104(1),9. A method for producing a battery module (300) according to one of claims 1 to 8 comprising the following steps: a.) Inserting a plurality of battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)) in a battery cell holder (200), whereby a non-positive and positive connection between the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)) and the battery cell holder (200); b.) Electrical contacting of the battery cells (103 (1), 103 (2), 103 (n), 104 (1),
104(2), 104(n), 302(1), 302(2), 302(n)) mit elektrisch leitenden Batteriezellverbindern; c.) Einschieben mindestens eines wellenförmigen Zwischenelements in104 (2), 104 (n), 302 (1), 302 (2), 302 (n)) with electrically conductive battery cell connectors; c.) inserting at least one wave-shaped intermediate element in
Längsrichtung der Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)), wodurch das wellenförmige Zwischenelement die Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) teilweise umschließt und an den Batteriezellen (103(1), 103(2), 103(n), 104(1), 104(2), 104(n), 302(1), 302(2), 302(n)) anliegt; d.) Einsetzen des Batteriezellhalters (200) in ein Batteriemodulgehäuse (301); e.) Elektrisches Kontaktieren der Batteriezellverbinder mit elektrischenLongitudinal direction of the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)), whereby the corrugated intermediate element the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n )) partially encloses and on the battery cells (103 (1), 103 (2), 103 (n), 104 (1), 104 (2), 104 (n), 302 (1), 302 (2), 302 (n)) is present; d.) inserting the battery cell holder (200) into a battery module housing (301); e.) Electrical contacting of the battery cell connector with electrical
Anschlusspolen des Batteriemoduls (300). Connection poles of the battery module (300).
10. Verwendung eines Batteriemoduls (300) gemäß einem der Ansprüche 1 bis 9 in elektrischen Energiespeichern für Elektrofahrzeuge, Brennstoffzellenfahrzeuge, Hybridfahrzeuge, Plug-In-Hybridfahrzeuge, Luftfahrzeuge, Pedelecs oder E-Bikes, für portable Einrichtungen zur Telekommunikation oder Datenverarbeitung, für elektrische Handwerkzeuge oder Küchenmaschinen, sowie in stationären Speichern zur Speicherung insbesondere regenerativ gewonnener elektrischer Energie. 10. Use of a battery module (300) according to one of claims 1 to 9 in electrical energy storage for electric vehicles, fuel cell vehicles, hybrid vehicles, plug-in hybrid vehicles, aircraft, pedelecs or e-bikes, for portable telecommunications or data processing equipment, for electric hand tools or kitchen machines, as well as in stationary storage systems for storing electrical energy obtained from renewable sources in particular.
PCT/EP2021/065785 2020-06-16 2021-06-11 Battery module WO2021254905A1 (en)

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JPH09306447A (en) 1996-05-13 1997-11-28 Matsushita Electric Ind Co Ltd Battery pack
EP1274137A1 (en) 2000-04-14 2003-01-08 Matsushita Electric Industrial Co., Ltd. Battery pack
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