DE102021116355A1 - Battery housing, traction battery and motor vehicle - Google Patents

Battery housing, traction battery and motor vehicle Download PDF

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Publication number
DE102021116355A1
DE102021116355A1 DE102021116355.2A DE102021116355A DE102021116355A1 DE 102021116355 A1 DE102021116355 A1 DE 102021116355A1 DE 102021116355 A DE102021116355 A DE 102021116355A DE 102021116355 A1 DE102021116355 A1 DE 102021116355A1
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battery
motor vehicle
following features
traction battery
traction
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Jasmin Ostertag
Erwin Götz
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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    • 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
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • 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
    • H01M10/62—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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—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
    • 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
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • 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
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

Die Erfindung stellt ein Batteriegehäuse (11, 12) für eine Traktionsbatterie (10) mit einem Oberteil (11) zum Befestigen des Batteriegehäuses (11, 12) an einem Kraftfahrzeug und einem Unterteil (12) zum Führen von Kühlluft entlang der Traktionsbatterie (10) bereit.Die Erfindung stellt ferner eine entsprechende Traktionsbatterie sowie ein entsprechendes Kraftfahrzeug bereit.The invention provides a battery housing (11, 12) for a traction battery (10) with an upper part (11) for fastening the battery housing (11, 12) to a motor vehicle and a lower part (12) for guiding cooling air along the traction battery (10). ready.The invention also provides a corresponding traction battery and a corresponding motor vehicle.

Description

Die vorliegende Erfindung betrifft ein Batteriegehäuse für eine Traktionsbatterie. Die vorliegende Erfindung betrifft darüber hinaus eine entsprechende Traktionsbatterie sowie ein entsprechendes Kraftfahrzeug.The present invention relates to a battery case for a traction battery. The present invention also relates to a corresponding traction battery and a corresponding motor vehicle.

Stand der TechnikState of the art

Das Wärmemanagement bei elektrischen Fahrzeugen erweist sich bekanntermaßen als komplex, da zentrale Bauteile wie Traktionsbatterie, elektrische Maschine und Leistungselektronik unterschiedlich temperiert werden sollten, um effizient zu arbeiten. Thermische Einflüsse auf die Traktionsbatterie durch Eigenwärme, Außentemperatur, Wärmeverluste etc. müssen daher kontrolliert und geregelt werden, um bei anwendungstypischen Umgebungstemperaturen eine einwandfreie Funktion des Fahrzeugs zu gewährleisten.Heat management in electric vehicles is known to be complex, since central components such as the traction battery, electric machine and power electronics should be kept at different temperatures in order to work efficiently. Thermal influences on the traction battery due to internal heat, outside temperature, heat loss, etc. must therefore be controlled and regulated in order to ensure that the vehicle functions perfectly at the ambient temperatures typical of the application.

Kühlsysteme nach dem Stand der Technik werden nach dem verwendeten Kühlmittel zum Beispiel in Luft- oder Flüssigkeitskühlungen eingeteilt. Eine reine Luftkühlung der im Unterboden eines Kraftfahrzeugs angeordneten Batteriemodule ist aufgrund der erforderlichen Wärmeabfuhr nur schwer zu realisieren; eine reine Kühlmittelkühlung ist aufwändig und erhöht das Fahrzeuggewicht.State-of-the-art cooling systems are classified according to the coolant used, for example, as air or liquid cooling. Pure air cooling of the battery modules arranged in the underbody of a motor vehicle is difficult to implement because of the heat dissipation required; pure coolant cooling is complex and increases the vehicle weight.

DE102019207203 A1 und CN110641243A offenbaren Traktionsbatterien mit jeweils zwei Kühlkreisläufen. DE102019207203 A1 and CN110641243A disclose traction batteries, each with two cooling circuits.

CN111114267A beschreibt eine Traktionsbatterie mit einer gemischten Flüssigkeits- und Luftkühlung. CN111114267A describes a traction battery with mixed liquid and air cooling.

CN107293663 B und DE102014110304 A1 betreffen Traktionsbatterien mit Kühlrippen. Gemäß letzterer Druckschrift ist zudem eine Leitung für Kühlflüssigkeit vorgesehen. CN107293663 Federation DE102014110304 A1 relate to traction batteries with cooling fins. According to the latter publication, a line for coolant is also provided.

Offenbarung der ErfindungDisclosure of Invention

Der Erfindung liegt das Problem zugrunde, dass sich insbesondere bei Traktionsbatterien im Unterboden des Kraftfahrzeugs die Wärmeableitung aus dem Batteriesystem nach oben in Richtung des Fahrzeugbodens schwierig gestaltet.The invention is based on the problem that, particularly in the case of traction batteries in the underbody of the motor vehicle, it is difficult to dissipate heat from the battery system upwards in the direction of the vehicle floor.

Die Erfindung stellt vor diesem Hintergrund ein Batteriegehäuse für eine Traktionsbatterie, eine entsprechende Traktionsbatterie sowie ein entsprechendes elektrisches Fahrzeug gemäß den unabhängigen Ansprüchen bereit.Against this background, the invention provides a battery housing for a traction battery, a corresponding traction battery and a corresponding electric vehicle according to the independent claims.

Erfindungsgemäß ist eine Mischkühlung der Traktionsbatterie vorgesehen, die der spezifischen Wärmeentwicklung über die gesamte Einbauhöhe Rechnung trägt: Während die obere Hälfte mit Kühlmittel und Luft gekühlt werden kann, erweist sich für die untere Hälfte der Traktionsbatterie eine Luftkühlung als hinreichend.According to the invention, mixed cooling of the traction battery is provided, which takes into account the specific heat development over the entire installation height: While the upper half can be cooled with coolant and air, air cooling proves to be sufficient for the lower half of the traction battery.

Ein Vorzug dieser Lösung liegt in ihrem geringen Bedarf an Kühlmittel. Die dadurch erzielbare Gewichtsersparnis kommt der Reichweite des Fahrzeugs zugute.An advantage of this solution is that it requires little coolant. The weight saving that can be achieved in this way benefits the range of the vehicle.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen angegeben. Beispielsweise kann eine erfindungsgemäße Traktionsbatterie am Oberteil befestigte Batteriemodule umfassen. Im Reparaturfall kann so zum Beispiel eines der Batteriemodule des Batteriesystems ausgetauscht werden, ohne das Kühlmedium vom Fahrzeug zu trennen.Further advantageous refinements of the invention are specified in the dependent patent claims. For example, a traction battery according to the invention can comprise battery modules attached to the upper part. In the event of repairs, for example, one of the battery modules in the battery system can be replaced without disconnecting the coolant from the vehicle.

Figurenlistecharacter list

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.

  • 1 zeigt die Explosionsdarstellung eines rollenden Chassis (rolling chassis) mit Batterie.
  • 2 zeigt eine Schnittdarstellung der Batterie senkrecht zur Wankachse des Chassis.
  • 3 zeigt eine Einzelheit der Schnittdarstellung gemäß 2 im Bereich des Unterbodens.
  • 4 zeigt eine entsprechende Schnittdarstellung der Batteriemodule mit Kühlkörpern.
Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.
  • 1 shows the exploded view of a rolling chassis with battery.
  • 2 shows a sectional view of the battery perpendicular to the roll axis of the chassis.
  • 3 shows a detail of the sectional view according to FIG 2 in the subfloor area.
  • 4 shows a corresponding sectional view of the battery modules with heat sinks.

Ausführungsformen der ErfindungEmbodiments of the invention

Zur Mischkühlung einer Traktionsbatterie (10) wird gemäß 1 ein zweischaliger Aufbau des Batteriegehäuses aus Oberteil (11) und Unterteil (12) gewählt, zwischen welchen die Batteriemodule angeordnet sind. Im Oberteil (11) ist hierbei eine Flüssigkeits- und Luftkühlung vorgesehen: In Längsrichtung des Chassis (Wank- oder x-Achse) verlaufen durchgängige Durchströmungskanäle, die rechts und links Kühlrippen aufweisen, um eine optimale Kühlung über die Oberfläche zu gewährleisten. Diese Kanäle sind front- und heckseitig mit einem Sammelrohr (21) verbunden. Eine entsprechende Rücklaufleitung (22) verläuft - bezüglich der Nick- oder y-Achse etwa mittig - nach vorn und wird bereits über die Länge des Unterbodens gekühlt. Vorteilhafterweise muss diese Rücklaufleitung (22) bei einer Demontage der Kühlelemente nicht getrennt werden.For mixed cooling of a traction battery (10) according to 1 a two-shell structure of the battery housing is selected from the upper part (11) and lower part (12), between which the battery modules are arranged. Liquid and air cooling is provided in the upper part (11): In the longitudinal direction of the chassis (roll or x-axis), continuous flow channels run, which have cooling ribs on the right and left to ensure optimal cooling over the surface. These channels are connected to a collecting pipe (21) at the front and rear. A corresponding return line (22) runs forward—roughly in the middle with respect to the pitch or y axis—and is already cooled along the length of the underbody. Advantageously, this return line (22) does not have to be separated when the cooling elements are dismantled.

Das lediglich luftgekühlte Unterteil (12) ist flächig an das Batterieelement angelegt und verschraubt und erfüllt durch seine Kühlrippen im Wesentlichen Luftleitfunktionen. Es mag dabei mehrteilig ausgeführt sein, um eine optimale Gewichts- und Kühlfunktion zu erzielen.The lower part (12), which is only air-cooled, is placed flat against the battery element and screwed on and, thanks to its cooling ribs, essentially fulfills air guiding functions. It likes doing more be made in parts in order to achieve an optimal weight and cooling function.

Wie 2 erkennen lässt, kann das Unterteil (12) wahlweise auch separat mit dem Rohbau verbunden werden. In jedem Fall trägt die Rohbaustruktur und insbesondere der Fahrzeugboden die beträchtliche Masse der Batteriemodule, die vorliegend exemplarisch in einem Längseinbau dargestellt sind, und bietet Anschraubmöglichkeiten für das Halbschalen-Oberteil (11). Der Fahrzeugboden und das Oberteil (11) mit der Halterung (14) der Batteriemodule (16) tragen somit zur Strukturfestigkeit und Steifigkeit des - zeichnerisch nicht dargestellten - Gesamtfahrzeugs bei.how 2 can be seen, the lower part (12) can optionally also be connected separately to the shell. In any case, the shell structure and in particular the vehicle floor bears the considerable mass of the battery modules, which are shown here as an example in a longitudinal installation, and offers screwing options for the half-shell upper part (11). The vehicle floor and the upper part (11) with the holder (14) of the battery modules (16) thus contribute to the structural strength and rigidity of the overall vehicle—not shown in the drawing.

Das Batteriegehäuse (11-13) wird zum Beispiel durch mehrere flächige Elemente von abbildungsgemäß unten geschlossen, was im Rahmen des Kundendienstes einen Wechsel einzelner Batteriemodule (16) ermöglicht. Insbesondere im Falle einer Reparatur ist nur dasjenige Element zu entfernen, das Zugang zum defekten Bauteil der Traktionsbatterie (10 - 1) - beispielsweise zu deren Anschlusskasten (battery junction box, BJB) - gewährt. Selbst zum Ausbau des Batteriesystems muss nur dessen Unterteil (12) entfernt werden; ein Abkoppeln des Kühlsystems ist hierzu nicht erforderlich.The battery housing (11-13) is closed, for example, by several flat elements from below in accordance with the figure, which enables individual battery modules (16) to be changed as part of customer service. Especially in the case of a repair, only the element that gives access to the defective component of the traction battery (10 - 1 ) - for example to their battery junction box (BJB) - granted. Even to remove the battery system, only its lower part (12) has to be removed; it is not necessary to decouple the cooling system.

Die Detaildarstellung gemäß 3 beleuchtet das Kühlkonzept im Oberteil (11) anhand eines x-Schnittes im Bereich einer Kühlmittelbohrung (24) des fest am Karosserieboden (20) verschraubten Kühlkörpers. Dieser beinhaltet zum Führen der Kühlmedien mehrere kleine Bohrungen (24) dieser Art sowie zusätzlich Kühlrippen (23), um etwaige Stauhitze abzuleiten. Die Auslegung der Rippen (23) hinsichtlich Wandstärke und anderweitiger Dimensionierung, Material, Fertigungstechnik etc. ist vorzugsweise der Größe des Batteriesystems und dessen Wärmeentwicklung angepasst.The detailed representation according to 3 sheds light on the cooling concept in the upper part (11) using an x-section in the area of a coolant hole (24) of the heat sink which is bolted to the body floor (20). This includes several small holes (24) of this type for guiding the cooling media as well as additional cooling fins (23) to dissipate any accumulated heat. The design of the ribs (23) in terms of wall thickness and other dimensions, material, manufacturing technology, etc. is preferably adapted to the size of the battery system and the heat it generates.

4 illustriert abschließend ein mögliches Befestigungskonzept anhand eines schematischen Schnittes in der y-z-Ebene des Fahrzeugkoordinatensystems. Wie die Zeichnung verdeutlicht, dienen die Kühlkörper (18, 19) als Aufnahme der Batteriemodule (16, 17), deren Verbindungskonzept einen Batterierahmen weitgehend ersetzen und somit das Gewicht der Traktionsbatterie (10) verringern kann. Die Kühlkörper (18, 19) mitsamt ihrer Kühlrippen bilden hierzu eine selbsttragende Struktur, indem die in der Abbildung lediglich beispielhaft dargestellten Befestigungsmöglichkeiten der einzelnen Kühlkörper (18, 19) deren Zusammenschluss in einem Verbund gestatten. Zu diesem Zweck können die Kühlkörper (18, 19) - wie oben links in der Abbildung anhand des Bezugszeichens 18 gezeigt - aus zwei symmetrischen Halbschalen bestehen, zwischen welchen jeweils ein Batteriemodul (16) verschraubt wird. Alternativ kommen - wie rechts in der Abbildung gezeigt - durchgängig profilierte Kühlkörper (19) in Betracht, in welche die Batteriemodule (16) eingeschoben und geklemmt werden. 4 Finally, illustrates a possible fastening concept based on a schematic section in the yz plane of the vehicle coordinate system. As the drawing makes clear, the heat sinks (18, 19) are used to hold the battery modules (16, 17), the connection concept of which can largely replace a battery frame and thus reduce the weight of the traction battery (10). The heat sinks (18, 19) together with their cooling ribs form a self-supporting structure for this purpose, in that the fastening options for the individual heat sinks (18, 19), which are only shown as examples in the figure, allow them to be combined in a composite. For this purpose, the heat sinks (18, 19) can consist of two symmetrical half-shells, as shown at the top left in the figure with reference to reference numeral 18, between which a battery module (16) is screwed. Alternatively - as shown on the right in the figure - continuously profiled heat sinks (19) can be considered, into which the battery modules (16) are inserted and clamped.

Es versteht sich, dass das Kühlkonzept der Mischkühlung nicht nur bei flächig am Unterboden (20 - 3) platzierten Batteriesystemen etwa im Rahmen eines modularen E-Antriebs-Baukastens (MEB), sondern - in einer unten links in der Abbildung gezeigten Anwendungsvariante - auch bei übereinander gestapelten Batteriemodulen (17) zum Beispiel unter dem Rücksitz eines batterieelektrischen Sportwagens Einsatz finden mag.It goes without saying that the cooling concept of mixed cooling is not only used for flat surfaces on the underbody (20 - 3 ) placed battery systems as part of a modular electric drive system (MEB), but - in an application variant shown in the figure below left - may also be used with battery modules (17) stacked on top of each other, for example under the back seat of a battery-electric sports car.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED IN DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturPatent Literature Cited

  • DE 102019207203 A1 [0004]DE 102019207203 A1 [0004]
  • CN 110641243 A [0004]CN 110641243A [0004]
  • CN 111114267 A [0005]CN 111114267A [0005]
  • CN 107293663 [0006]CN107293663 [0006]
  • DE 102014110304 A1 [0006]DE 102014110304 A1 [0006]

Claims (10)

Batteriegehäuse (11-13) für eine Traktionsbatterie (10), gekennzeichnet durch folgende Merkmale: - ein Oberteil (11) zum Befestigen des Batteriegehäuses (11-13) an einem Kraftfahrzeug und - ein Unterteil (12) zum Führen von Kühlluft entlang der Traktionsbatterie (10).Battery housing (11-13) for a traction battery (10), characterized by the following features: - an upper part (11) for fastening the battery housing (11-13) to a motor vehicle and - a lower part (12) for guiding cooling air along the traction battery (10). Batteriegehäuse nach Anspruch 1, gekennzeichnet durch folgendes Merkmal: - das Oberteil (11) weist Kanäle (13) zum Führen von Kühlflüssigkeit auf.battery case after claim 1 , characterized by the following feature: - the upper part (11) has channels (13) for guiding coolant. Batteriegehäuse nach Anspruch 2, gekennzeichnet durch folgendes Merkmal: - das Oberteil (11) ist für eine Fixierung (14) von Modulgehäusen (15) eingerichtet.battery case after claim 2 , characterized by the following feature: - the upper part (11) is set up for a fixation (14) of module housings (15). Traktionsbatterie (10), gekennzeichnet durch folgende Merkmale: - ein Batteriegehäuse (11-13) nach Anspruch 2 oder 3 und - innerhalb des Batteriegehäuses (11-13) zumindest am Oberteil (11) befestigte Batteriemodule (16, 17).Traction battery (10), characterized by the following features: - a battery housing (11-13). claim 2 or 3 and - battery modules (16, 17) fastened within the battery housing (11-13) at least on the upper part (11). Traktionsbatterie (10) nach Anspruch 4, gekennzeichnet durch folgende Merkmale: - das Oberteil (11) und Unterteil (12) bilden zweischalige Kühlkörper (18) und - die Batteriemodule (16, 17) sind in den Kühlkörpern (18) verschraubt.traction battery (10). claim 4 , characterized by the following features: - the upper part (11) and lower part (12) form two-shell heat sinks (18) and - the battery modules (16, 17) are screwed into the heat sinks (18). Traktionsbatterie (10) nach Anspruch 4, gekennzeichnet durch folgende Merkmale: - das Oberteil (11) und Unterteil (12) bilden durchgängig profilierte Kühlkörper (19) und - die Batteriemodule (16, 17) sind innerhalb der Kühlkörper (19) verklemmt.traction battery (10). claim 4 characterized by the following features: - the upper part (11) and lower part (12) form continuously profiled heat sinks (19) and - the battery modules (16, 17) are clamped within the heat sink (19). Kraftfahrzeug, gekennzeichnet durch folgende Merkmale: - eine Traktionsbatterie (10) nach einem der Ansprüche 4 bis 6 und - einen die Traktionsbatterie (10) tragenden Unterboden (20).Motor vehicle, characterized by the following features: - a traction battery (10) according to one of Claims 4 until 6 and - an underbody (20) carrying the traction battery (10). Kraftfahrzeug nach Anspruch 7, gekennzeichnet durch folgende Merkmale: - die Kanäle (13) durchziehen das Oberteil (11) entlang einer Wankachse des Kraftfahrzeuges und - das Kraftfahrzeug weist am Unterboden (20) front- und heckseitig mit den Kanälen (13) fluidtechnisch verbundene Sammelrohre (21) auf.motor vehicle after claim 7 characterized by the following features: - the channels (13) run through the upper part (11) along a roll axis of the motor vehicle and - the motor vehicle has on the underbody (20) at the front and rear with the channels (13) fluidically connected headers (21). . Kraftfahrzeug nach Anspruch 8, gekennzeichnet durch folgende Merkmale: - das Kraftfahrzeug weist eine mit den Sammelrohren (21) fluidtechnisch verbundene Rücklaufleitung (22) auf und - die Rücklaufleitung (22) durchzieht das Unterteil (12) entlang der Wankachse des Kraftfahrzeuges.motor vehicle after claim 8 characterized by the following features: - the motor vehicle has a return line (22) fluidically connected to the collecting pipes (21) and - the return line (22) runs through the lower part (12) along the roll axis of the motor vehicle. Kraftfahrzeug nach einem der Ansprüche 7 bis 9, gekennzeichnet durch folgende Merkmale: - das Oberteil (11) weist in Richtung des Unterbodens (20) ragende Kühlrippen (23) zum Kühlen der Batteriemodule (16, 17) mittels der Kühlluft auf und - das Oberteil (11) weist durchgängig zwischen den Kühlrippen (23) parallel zur Wankachse verlaufende Bohrungen (24) auf, welche die Kanäle (13) bilden.Motor vehicle according to one of Claims 7 until 9 , characterized by the following features: - the upper part (11) has cooling ribs (23) projecting in the direction of the underbody (20) for cooling the battery modules (16, 17) by means of the cooling air and - the upper part (11) has continuous between the cooling ribs (23) running parallel to the roll axis bores (24) which form the channels (13).
DE102021116355.2A 2021-06-24 2021-06-24 Battery housing, traction battery and motor vehicle Pending DE102021116355A1 (en)

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