WO2023072807A1 - Vehicle having an electrical energy storage unit - Google Patents

Vehicle having an electrical energy storage unit Download PDF

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Publication number
WO2023072807A1
WO2023072807A1 PCT/EP2022/079540 EP2022079540W WO2023072807A1 WO 2023072807 A1 WO2023072807 A1 WO 2023072807A1 EP 2022079540 W EP2022079540 W EP 2022079540W WO 2023072807 A1 WO2023072807 A1 WO 2023072807A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
storage unit
energy storage
electrical energy
cover element
Prior art date
Application number
PCT/EP2022/079540
Other languages
German (de)
French (fr)
Inventor
Hubert Kazmaier
Jan Zickwert
Jürgen REINHARDT
Thomas Neff
Jochen Bisinger
Jan Rath
Jan Helber
Original Assignee
Mercedes-Benz Group AG
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 Mercedes-Benz Group AG filed Critical Mercedes-Benz Group AG
Publication of WO2023072807A1 publication Critical patent/WO2023072807A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • 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
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • 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
    • B60K2001/0422—Arrangement under the front seats
    • 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
    • B60K2001/0433—Arrangement under the rear seats
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to a vehicle with an electrical energy storage unit arranged in the area of a vehicle floor according to the preamble of claim 1.
  • the side impact system has a battery pack housing that includes a plurality of cross members that traverse the battery pack housing and absorb and distribute at least a portion of a received load during a side impact of the vehicle.
  • the battery pack housing is positioned between the front and rear vehicle suspension assemblies and is mounted between and mechanically coupled to vehicle structural members located on either side of the vehicle.
  • the cross members divide the batteries contained within the battery pack housing into battery groups.
  • a body floor structure of a vehicle is also known from US Pat. No. 10,464,406 B2.
  • the body floor structure includes a battery pack arranged under a floor panel, a side sill extending outward in a vehicle front-rear direction in a vehicle width direction, and a battery side frame.
  • the battery side frame has a lower surface positioned outward in the vehicle width direction and positioned lower than a support portion for the battery pack, the support portion being formed inside in the vehicle width direction of the battery side frame.
  • the invention is based on the object of creating a vehicle of the type discussed here, in which only a low overall weight can be realized with a large energy storage unit at the same time.
  • the vehicle is characterized in particular by the fact that a cover element forms at least one section of a passenger compartment floor of the vehicle. According to an advantageous development of the invention, this cover element can be designed specifically for the vehicle. A number of seat cross members and/or a center tunnel are integrated into the cover element and/or arranged on the cover element.
  • a box is arranged and/or formed on and/or on the cover element, which box contains a plurality of high-voltage electrical/electronic components.
  • Such an integration of the electrical energy storage unit into the vehicle allows an optimized power flow along longitudinal members and the seat cross member to be realized in the event of a collision of the vehicle.
  • the housing represents a partially load-bearing component, but the battery modules of the electrical energy storage unit are essentially not loaded in the event of a collision.
  • a so-called main vehicle floor is omitted when the bodyshell is produced, since this is formed by the cover element of the electrical energy storage unit.
  • the vehicle weight can be reduced by a lightweight construction thus formed, as a result of which a specific energy density of a system of the electrical energy storage unit can be increased. Lightweight construction potentials are therefore used in relation to the shell and in relation to the electrical energy storage unit, ie its support frame.
  • Voltage measuring sensors, temperature sensors and/or gas sensors for detecting gas escaping from the individual cells can be integrated into the side members and/or the seat cross members, so that a state of the electrical energy storage unit can be continuously monitored.
  • a cooling function for the electrical energy storage unit can be integrated into the cover element, which is designed in a so-called sandwich construction.
  • the floor element that closes the supporting frame downwards towards the roadway can be provided with such a cooling function.
  • Such a structure of the vehicle can result in cost savings through blocking within a series and across several series, for example for limousines, SUVs, etc.
  • FIG. 2 schematically shows an enlarged section of a sectional view of the electrical energy storage unit integrated in the vehicle in the area of a side sill
  • FIG. 3 shows a perspective view of the energy storage unit according to FIGS. 1 and 2 in a partially exploded view.
  • Fig. 1 shows a schematic perspective view of a structure 3 of a vehicle 1, also referred to as a shell or body, in particular of a motor vehicle designed as a passenger car, and an energy storage unit 5, which is brought up to it from the underside of the vehicle and inserted into an opening 7 in the structure 3 .
  • a vehicle also referred to as a shell or body, in particular of a motor vehicle designed as a passenger car, and an energy storage unit 5, which is brought up to it from the underside of the vehicle and inserted into an opening 7 in the structure 3 .
  • the vehicle 1 is, for example, an electric vehicle with an electric drive unit, by means of which the electric vehicle is driven.
  • the drive unit is supplied with energy by means of the electrical energy storage unit 5 .
  • a range of an electric vehicle 1, which can be achieved by means of electrical energy stored in the electrical energy storage unit 5, is essentially determined by efficiency and the consumption of electrical energy based on the distance traveled, for example kWh/100 km and a predetermined usable capacity electrical energy storage unit 5 determined. For this reason, in particular in a comparatively large and heavy motor vehicle, for example an SUV (sports utility vehicle), the aim is to install an electrical energy storage unit 5 with the highest possible capacity in the vehicle 1 .
  • SUV sports utility vehicle
  • various installation spaces are known for arranging an electrical energy storage unit, for example on a vehicle underbody, in the transmission tunnel, under a rear seat bench or in the trunk, in particular a spare wheel recess.
  • a solution is described below, which optimizes a usable installation space for arranging the electrical energy storage unit 5 in the vehicle 1, so that a relatively high electrical range can be achieved using the electrical energy made available in the electrical energy storage unit 5 while complying with safety requirements, in particular for side impact protection , and also the lowest possible total weight of the vehicle, is possible in a cost-effective manner.
  • the structure 3 of the exemplary embodiment of the vehicle 1 according to the invention shown in FIG. 1 is preferably designed as a self-supporting body.
  • body pillars 9, so-called A pillars, body pillars 11, so-called B pillars, body pillars 13, so-called C pillars, a roof element 14 and side skirts 15, also referred to as outer longitudinal members, can be seen.
  • the opening 7 is made in the transverse direction of the vehicle (y-direction) by the side skirts 15 and in the longitudinal direction of the vehicle by corresponding body parts, for example a front bulkhead 17 or a front cross member that connects the side skirts 15 to one another in the transverse direction of the vehicle, and a rear end wall 19 or a rear one that Side skirts 15 interconnecting cross members, limited.
  • the opening 7 is therefore located in the area, i.e. in the footwell, of a passenger compartment 21, also referred to as a passenger compartment, and in this exemplary embodiment is completely free of additional longitudinal members and cross members, which connect the end wall 17 and the end wall 19 or the side skirts 15 to one another. It can be seen particularly well from a combination of FIGS.
  • the rectangular support frame 23 which is closed on the circumference, comprises lateral longitudinal support elements 25 which are arranged at a distance from one another in the transverse direction of the vehicle and which have front and rear transverse support elements 27 which are at a distance from one another in the longitudinal direction of the vehicle and of which only the front transverse support element 27 can be seen in the representation according to Figure 3 , are connected to each other.
  • the side skirts 15 are designed in multiple parts and each have an inner or inner longitudinal support element 25, which is designed in particular in the form of a shell or as an extruded profile, and which at the same time forms part of the support frame 23 of the energy storage unit 5. and an outer or external longitudinal member element 35.
  • These outer longitudinal member elements 35 can be part of a side wall 37 of the vehicle body/structure 3 and, when the energy storage unit 5 is inserted into the body opening 7, are connected to the longitudinal member elements 25 that form part of the support frame 25, for example by means of mechanical connecting means 39, one of which can be seen in FIG. 2, and/or by means of a material connection and/or positive connection.
  • a component of the energy storage unit 5 has a dual function, namely the longitudinal support elements 25, which form both part of the support frame 23 of the energy storage unit and part of the body shell, namely the side skirts.
  • the energy storage unit 5 comprises a plurality of storage modules electrically connected to one another, which are preferably arranged and fastened in a non-destructively detachable manner on the supporting frame 23 or in at least one receiving space within the supporting frame 23 .
  • Such electrical storage modules are known, so that they are not discussed in detail here.
  • This base element 29 is also referred to as the lower cover.
  • the base element 27 is non-destructively held on the support frame 23 by means of suitable fasteners, for example screws or screw elements, such that it can be detached from the support frame 23 and removed even when the energy storage unit 5 is installed in the vehicle 1 . Access to the memory modules for maintenance purposes or replacement is thus made possible in a simple manner.
  • the energy storage unit 5 or its supporting frame 23 and the receiving space accommodating the storage modules are closed at the top by means of a plate-shaped cover element 33, preferably in a liquid-tight manner.
  • This cover element 33 also referred to as the upper cover, forms the main floor of the vehicle body when the energy storage unit 7 is inserted into the structure 3 from below in its opening 7, which prevents liquid and moisture from penetrating the interior of the vehicle when the motor vehicle is in the finished state.
  • the cover element 33 therefore also has a dual function, namely closure elements of the energy storage unit and at the same time the main floor of the body.
  • the flat, in particular tabular, preferably inherently rigid cover element 33 can be designed in one piece or in multiple pieces.
  • the electrical energy storage unit 5 is integrated into the vehicle body in such a way that it takes over or supports these functions of the vehicle body 3 .
  • the body 3 can thus be realized with a lower weight and/or a particularly large energy storage unit can be integrated into the vehicle 1 .
  • the electrical energy storage unit 5 is assembled in particular in its manufacturing plant, i.e. independently of the body 3 of the vehicle 1. Its underside or the floor element 29 fulfills the function of an underbody of the vehicle when the energy storage unit 5 is installed in the vehicle 1, ie the part of the vehicle which faces a roadway.
  • the battery modules are inserted into the support frame 23 .
  • the cover element 33 is then placed on the module with the support frame 23 as the passenger compartment floor.
  • the receiving space of the support frame 23 is then closed by means of the lower cover (bottom element 29) or beforehand. Subsequently, the electric Energy storage unit 5 with its electrics and electronics connected accordingly, for example, to carry out further assembly processes in production.
  • the electrical energy storage unit 5 with its support frame 23 thus forms the underbody of the vehicle 1, with the vehicle shell initially having no underbody after its manufacture.
  • the underbody formed by means of the electrical energy storage unit 5 is fastened to the shell during assembly of the vehicle 1 or is formed only when the energy storage unit 5 is assembled.
  • the underbody, which is formed by means of the electrical energy storage unit 5, is therefore integrated into the shell during assembly and is therefore an assembly component.
  • the electrical energy storage unit 5 is additionally provided with seat cross members 41 , preferably all seat cross members, a center tunnel 43 and console elements 45 .
  • the seat cross member 41, the center tunnel 43 and the console elements 45 are placed on the cover element 33 forming the main floor and fastened thereto.
  • one or more of these components is also formed in one piece with the cover element 33 .
  • the seat cross members 41 are connected to the structure 3 of the vehicle 1, for example screwed, which improves the stability of the vehicle body.
  • a box 47 is arranged and/or formed on and/or on the cover element 33, in which a plurality of high-voltage electrical/electronic components are arranged. Specifically, the box 47 is joined to the lid member 33 for assembly.
  • the electrical energy storage unit 5 as a battery system also has a lower cooling plate (not shown in detail), busbars, a cooling line, an upper cooling plate, busbars for contacting and control lines, a battery management system, a high-voltage protective cover, insulation and the lower housing cover (floor elements 29). , which is bolted to the side skirts 15 for comparatively easy service and assembly.
  • one half of the respective side sill 15 is integrated into the supporting frame 23 and in particular forms the housing frame.
  • Another half of the side sill is arranged on the outside of the side wall 37 of the body of the vehicle 1 .
  • the two halves of the respective side sill 15 are together screwed and/or attached to one another by means of another suitable connection technique.
  • the cover element 33 of the electrical energy storage unit 5 is vehicle-specific, since different vehicle classes have different underbody structures.
  • the supporting frame 23 and possibly also the base element 29 can be used across model series and only the cover element 33 is adapted differently or correspondingly for each vehicle type.
  • the body 3 can be built up as usual in its production and go through a specific coating process, with a rear seat cross member, ie for attaching rear seats, remaining on the body 3 itself for reinforcement, ie it can be provided.
  • the vehicle body 3 with its electric drive train and the electric energy storage unit 5 only meets rigidity, strength and so-called crash requirements in the assembled state.
  • battery modules or individual cells of the electrical energy storage unit 5 are only mounted in a structure that serves as high-voltage protection, with no load paths being routed along this structure within a vehicle structure in the event of a collision of the vehicle 1 .
  • the installation space for arranging the electrical energy storage unit 5 is used in an improved manner, since there are no stiffening structures in the installation space.
  • the module of the electrical energy storage unit 5 is integrated into a vehicle underbody structure, the respective side sill 15 with its two halves, which are designed as profiles, being used to separate the electrical energy storage unit 5 and the body 3 .
  • the proposed solution describes a lightweight integration of an electrical energy storage unit 5 in a body 3 of a vehicle 1.
  • the load on the supporting frame 23 of the energy storage unit is comparatively low, since the load paths run along the shell around the electrical energy storage device.
  • the electrical energy storage unit 5 with its interconnected individual cells is delivered finished or pre-assembled to the assembly line on which the energy storage unit 5 is attached to the structure 3 . This largely rules out the need for high-voltage work to be carried out on the assembly line.
  • the individual cells are connected to form a large module and are highly integrated, with space in the supporting frame 23 being optimally utilized.
  • space in the supporting frame 23 being optimally utilized.
  • the cover element 33 thus forms the main floor of the vehicle, with the box 47 and low-voltage electrical/electronic components being arranged on the cover element 33 of the electrical energy storage unit 5 above the individual cells.
  • the components of the low-voltage electrics/electronics are arranged in the so-called tunnel of the vehicle 1 .
  • the body structure 3 is stabilized by means of temporary, removable stiffening structures before the integration of the electrical energy storage unit 5 into the structure 3 to such an extent that the structure 3 can undergo cathodic dip painting and other anti-corrosion measures and painting.
  • the structure 3 is designed for optimal rigidity and strength with an integrated electrical energy storage unit 5 and joined side walls.
  • the temporary stiffening structures are exchanged before the electrical energy storage unit 5 is assembled.
  • the assembly of the electrical energy storage unit 5 and the connection of the seat cross member 41 and the support frame 23 to the body 3 via the halves of the side skirts 15 gives the body its final stability and rigidity.
  • the interior of the support frame 23 is sealed off by means of the cover element 33 and the lower base element 29 , the electrical energy storage unit 5 being delivered to the assembly line ready for operation. Electrical contact is made with the respective electric drive train on the assembly line.
  • a cooling function and a media guide required for this are integrated into the cover element 33, which is designed, for example, in a honeycomb sandwich structure.
  • the structure 3 has a split side sill 15, one half of which is formed by structures on the support frame 23, for example venting channels, and the other half is formed by structures of the side wall 37 of the structure 3.
  • the side sill 15 is finally created by joining the side wall to the support frame 23 after the electrical energy storage unit 5 has been introduced into the body 3 and integrated.
  • Venting channels for discharging hot gases in the event of a so-called thermal runaway of individual cells of the electrical energy storage unit 5 are integrated in the side sills 15 .
  • the side skirt 15 forms a load path for longitudinal forces, in particular in the event of a frontal collision of the vehicle 1.
  • the side skirt 15 supports transverse forces and represents a deformation zone, in particular in the event of a side collision of the vehicle 1.
  • Sensors can also be integrated into the side skirt 15, for example in the form of strain gauges, in order to measure a mechanical stress on the side sill 15 and optionally on the electrical energy storage unit 5 . Measured data can be stored in a control device so that it can be detected whether the electrical energy storage unit 5 was damaged or mechanically stressed after a collision of the vehicle 1.
  • Such sensors can also be integrated into the seat cross member 41 .
  • Sensors for example temperature sensors and/or gas sensors, can also be integrated into the side sill 15 in order to detect a thermal runaway event and initiate safety measures.
  • the electrical energy storage unit 5 If the electrical energy storage unit 5 is to be repaired, the other outer half of the side sill 35, which forms an integral part of the body 3, and the seat cross member 41 remain on the vehicle 1.
  • the lower housing cover (bottom elements 29) is opened, and cooling lines can be decoupled via so-called quick-release couplings.
  • Plug connectors for power and/or control scopes of the electrical energy storage unit 5 are unlocked from the interior of the vehicle 1, where the electrics/electronics are arranged and resolved. The connectors are accessed via so-called service openings. Once this has been done, the electrical energy storage unit 5 or a so-called battery pack, for example the large module, can be removed from the support frame 23 from below.
  • Such a battery pack has a comparatively thin-walled inner housing, which is closed due to high-voltage security. After removal, the battery pack is stowed in a stiffening and insulating transport case and can thus be safely transported to a repair center.
  • a customer immediately receives a replacement battery, so that the downtime of the vehicle 1, in particular with a weakened shell structure, can be reduced.
  • an underbody variant is conceivable which allows an internal combustion engine drive to be integrated into the body 3 .
  • the large module of the electrical energy storage unit 5 with the inner half 25 of the respective side sill 15 is the same within one architecture for all derivatives, with a cost saving resulting from the fact that the same sill profile, i.e. the inner half 25 of the side sill 15, across all series, for example sedan , SUV, is used. This means that essentially only the cover element 33 and the outer side sill element 37 have to be adjusted.

Abstract

The invention relates to a vehicle (1) having an electrical energy storage unit (5), which is arranged in the region of a vehicle floor and has a support frame (23). The vehicle is characterised in that at least some parts of the electrical energy storage unit (5) form a floor pan of the vehicle (1), a cover element (33) of the electrical energy storage unit (5) forms at least a part of a passenger compartment floor of the vehicle (1), and a number of seat crossmembers (4) and/or a transmission hump (5) is/are integrated in the cover element (33) and/or arranged on the cover element (33).

Description

Fahrzeug mit einer elektrischen Energiespeichereinheit Vehicle with an electrical energy storage unit
Die Erfindung betrifft ein Fahrzeug mit einer im Bereich eines Fahrzeugbodens angeordneten elektrischen Energiespeichereinheit gemäß Oberbegriff des Anspruchs 1. The invention relates to a vehicle with an electrical energy storage unit arranged in the area of a vehicle floor according to the preamble of claim 1.
Aus der EP 2 468609 A2 ist ein energieabsorbierendes und verteilendes Seitenaufprallsystem zur Verwendung in einem Fahrzeug bekannt. Das Seitenaufprallsystem weist ein Batteriepackgehäuse auf, das eine Vielzahl von Querträgern umfasst, die das Batteriepackgehäuse queren und bei einem Seitenaufprall des Fahrzeuges mindestens einen Teil einer aufgenommenen Last absorbieren und verteilen. Das Batteriepackgehäuse ist zwischen den vorderen und hinteren Fahrzeugaufhängungsbaugruppen positioniert und zwischen Fahrzeugstrukturelementen, die sich auf beiden Seiten des Fahrzeuges befinden, montiert und mechanisch mit diesen gekoppelt. Zusätzlich zur Bereitstellung von Steifigkeit, Festigkeit und Schlagfestigkeit unterteilen die Querträger die im Batteriepackgehäuse enthaltenen Batterien in Batteriegruppen. An energy absorbing and distributing side impact system for use in a vehicle is known from EP 2 468609 A2. The side impact system has a battery pack housing that includes a plurality of cross members that traverse the battery pack housing and absorb and distribute at least a portion of a received load during a side impact of the vehicle. The battery pack housing is positioned between the front and rear vehicle suspension assemblies and is mounted between and mechanically coupled to vehicle structural members located on either side of the vehicle. In addition to providing rigidity, strength and impact resistance, the cross members divide the batteries contained within the battery pack housing into battery groups.
Darüber hinaus ist aus der US 10,464,406 B2 eine Karosseriebodenstruktur eines Fahrzeuges bekannt. Die Karosseriebodenstruktur umfasst einen Batteriesatz, welcher unter einem Bodenblech angeordnet ist, einen Seitenschweller, der sich in einer Fahrzeugfront-Heck-Richtung in einer Fahrzeugbreitenrichtung nach außen erstreckt, und einen Batterieseitenrahmen. Der Batterieseitenrahmen weist eine untere Fläche auf, die in der Fahrzeugbreitenrichtung nach außen positioniert ist und tiefer als ein Stützabschnitt für den Batteriesatz positioniert ist, wobei der Stützabschnitt in der Fahrzeugbreitenrichtung des Batterieseitenrahmens innen ausgebildet ist. Der Erfindung liegt die Aufgabe zugrunde, ein Fahrzeug der hier angesprochenen Art zu schaffen, bei welchem ein nur geringes Gesamtgewicht bei gleichzeitig großer Energiespeichereinheit realisierbar ist. A body floor structure of a vehicle is also known from US Pat. No. 10,464,406 B2. The body floor structure includes a battery pack arranged under a floor panel, a side sill extending outward in a vehicle front-rear direction in a vehicle width direction, and a battery side frame. The battery side frame has a lower surface positioned outward in the vehicle width direction and positioned lower than a support portion for the battery pack, the support portion being formed inside in the vehicle width direction of the battery side frame. The invention is based on the object of creating a vehicle of the type discussed here, in which only a low overall weight can be realized with a large energy storage unit at the same time.
Die Aufgabe wird erfindungsgemäß durch ein Fahrzeug gelöst, welches die in Anspruch 1 angegebenen Merkmale aufweist. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. The object is achieved according to the invention by a vehicle which has the features specified in claim 1 . Advantageous configurations of the invention are the subject matter of the dependent claims.
Das Fahrzeug zeichnet sich insbesondere dadurch aus, dass ein Deckelelement zumindest einen Abschnitt eines Fahrgastraumbodens des Fahrzeuges bildet. Dabei kann dieses Deckelelement gemäß einer vorteilhaften Weiterbildung der Erfindung fahrzeugspezifisch ausgebildet sein. Eine Anzahl von Sitzquerträgern und/oder ein Mitteltunnel sind in das Deckelelement integriert und/oder auf dem Deckelelement angeordnet. The vehicle is characterized in particular by the fact that a cover element forms at least one section of a passenger compartment floor of the vehicle. According to an advantageous development of the invention, this cover element can be designed specifically for the vehicle. A number of seat cross members and/or a center tunnel are integrated into the cover element and/or arranged on the cover element.
Gemäß einer Weiterbildung der Erfindung ist vorgesehen, dass auf und/oder an dem Deckelelement eine Box angeordnet und/oder ausgebildet, welche eine Mehrzahl von Hochvolt-Elektrik-/Elektronikkomponenten enthält. According to a development of the invention, it is provided that a box is arranged and/or formed on and/or on the cover element, which box contains a plurality of high-voltage electrical/electronic components.
Durch eine derartige Einbindung der elektrischen Energiespeichereinheit in das Fahrzeug kann ein optimierter Kraftfluss entlang von Längsträgern und der Sitzquerträger im Kollisionsfall des Fahrzeuges realisiert werden. Das Gehäuse stellt dabei eine teilweise tragende Komponente dar, wobei aber Batteriemodule der elektrischen Energiespeichereinheit im Kollisionsfall im Wesentlichen nicht belastet werden. Such an integration of the electrical energy storage unit into the vehicle allows an optimized power flow along longitudinal members and the seat cross member to be realized in the event of a collision of the vehicle. The housing represents a partially load-bearing component, but the battery modules of the electrical energy storage unit are essentially not loaded in the event of a collision.
Bei einer Herstellung des Rohbaus entfällt ein so genannter Fahrzeughauptboden, da dieser durch das Deckelelement der elektrischen Energiespeichereinheit gebildet wird. Das Fahrzeuggewicht kann durch eine somit gebildete Leichtbauweise verringert werden, wodurch eine spezifische Energiedichte eines Systems der elektrischen Energiespeichereinheit erhöht werden kann. Es werden also Leichtbaupotentiale in Bezug auf den Rohbau sowie in Bezug auf die elektrische Energiespeichereinheit, das heißt dessen Tragrahmen, genutzt. A so-called main vehicle floor is omitted when the bodyshell is produced, since this is formed by the cover element of the electrical energy storage unit. The vehicle weight can be reduced by a lightweight construction thus formed, as a result of which a specific energy density of a system of the electrical energy storage unit can be increased. Lightweight construction potentials are therefore used in relation to the shell and in relation to the electrical energy storage unit, ie its support frame.
In die Längsträger und/oder die Sitzquerträger können Spannungsmesssensoren, Temperatursensoren und/oder Gassensoren zur Detektion aus den Einzelzellen entweichenden Gases integriert werden, so dass ein Zustand der elektrischen Energiespeichereinheit fortlaufend überwacht werden kann. Eine Kühlfunktion für die elektrische Energiespeichereinheit kann in das Deckelelement integriert werden, welcher in einer sogenannten Sandwichbauweise ausgeführt ist. Alternativ kann in das den Tragrahmen nach unten zur Fahrbahn hin verschließende Bodenelement mit einer derartigen Kühlfunktion versehen sein. Voltage measuring sensors, temperature sensors and/or gas sensors for detecting gas escaping from the individual cells can be integrated into the side members and/or the seat cross members, so that a state of the electrical energy storage unit can be continuously monitored. A cooling function for the electrical energy storage unit can be integrated into the cover element, which is designed in a so-called sandwich construction. Alternatively, the floor element that closes the supporting frame downwards towards the roadway can be provided with such a cooling function.
Aus einem derartigen Aufbau des Fahrzeuges kann eine Kostenersparnis durch Verblockung innerhalb einer Baureihe und über mehrere Baureihen hinweg, zum Beispiel für Limousinen, SUV etc. resultieren. Such a structure of the vehicle can result in cost savings through blocking within a series and across several series, for example for limousines, SUVs, etc.
Ein vorteilhaftes Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Dabei zeigen: An advantageous embodiment of the invention is explained in more detail below with reference to the drawing. show:
Fig. 1 in stark schematisierter Darstellung einen Aufbau eines Fahrzeuges und einer elektrischen Energiespeichereinheit, 1 in a highly schematic representation of a structure of a vehicle and an electrical energy storage unit,
Fig. 2 schematisch einen vergrößerten Ausschnitt einer Schnittdarstellung der in das Fahrzeug integrierten elektrischen Energiespeichereinheit im Bereich eines Seitenschwellers, und 2 schematically shows an enlarged section of a sectional view of the electrical energy storage unit integrated in the vehicle in the area of a side sill, and
Fig. 3 eine perspektivische Ansicht der Energiespeichereinheit gemäß Fig. 1 und 2 in teilweiser Explosionsdarstellung. 3 shows a perspective view of the energy storage unit according to FIGS. 1 and 2 in a partially exploded view.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen. Corresponding parts are provided with the same reference symbols in all figures.
Fig. 1 zeigt in einer schematischen Perspektivansicht einen auch als Rohbau oder Karosserie bezeichneten Aufbau 3 eines Fahrzeugs 1, insbesondere eines als Personenkraftwagen ausgebildeten Kraftwagens, und eine Energiespeichereinheit 5, welche von der Fahrzeugunterseite an diesen herangeführt und in eine Öffnung 7 im Aufbau 3 eingesetzt wird. Fig. 1 shows a schematic perspective view of a structure 3 of a vehicle 1, also referred to as a shell or body, in particular of a motor vehicle designed as a passenger car, and an energy storage unit 5, which is brought up to it from the underside of the vehicle and inserted into an opening 7 in the structure 3 .
Bei dem Fahrzeug 1 handelt es sich beispielsweise um ein Elektrofahrzeug mit einer elektrischen Antriebseinheit, mittels welcher das Elektrofahrzeug angetrieben wird. Die Antriebseinheit wird mittels der elektrischen Energiespeichereinheit 5 mit Energie versorgt. Eine Reichweite eines elektrischen Fahrzeuges 1, welche mittels einer in der elektrischen Energiespeichereinheit 5 gespeicherten elektrischen Energie erreicht werden kann, wird im Wesentlichen durch eine Effizienz und der Verbrauch elektrischer Energie bezogen auf die gefahrene Strecke, beispielsweise kWh/100 km und eine vorgegebene nutzbare Kapazität der elektrischen Energiespeichereinheit 5 bestimmt. Insbesondere bei einem vergleichsweise großen und schweren Kraftfahrzeug, beispielsweise einem SUV (Sport Utility Vehicle), wird aus diesem Grund angestrebt, eine elektrische Energiespeichereinheit 5 mit einer möglichst hohen Kapazität im Fahrzeug 1 zu verbauen. The vehicle 1 is, for example, an electric vehicle with an electric drive unit, by means of which the electric vehicle is driven. The drive unit is supplied with energy by means of the electrical energy storage unit 5 . A range of an electric vehicle 1, which can be achieved by means of electrical energy stored in the electrical energy storage unit 5, is essentially determined by efficiency and the consumption of electrical energy based on the distance traveled, for example kWh/100 km and a predetermined usable capacity electrical energy storage unit 5 determined. For this reason, in particular in a comparatively large and heavy motor vehicle, for example an SUV (sports utility vehicle), the aim is to install an electrical energy storage unit 5 with the highest possible capacity in the vehicle 1 .
Im Allgemeinen sind verschiedene Bauräume zur Anordnung einer elektrischen Energiespeichereinheit bekannt, beispielsweise an einem Fahrzeugunterboden, im Getriebetunnel, unter einer Rücksitzbank oder im Kofferraum, insbesondere einer Ersatzradmulde. Im Folgenden wird eine Lösung beschrieben, welche einen nutzbaren Bauraum zur Anordnung der elektrischen Energiespeichereinheit 5 im Fahrzeug 1 optimiert, so dass eine verhältnismäßig hohe elektrische Reichweite mittels der in der elektrischen Energiespeichereinheit 5 zur Verfügung gestellten elektrischen Energie unter Einhaltung von Sicherheitsanforderungen, insbesondere für den Seitenaufprallschutz, und auch einem möglichst geringem Gesamtgewicht des Fahrzeugs, in kostengünstiger Weise möglich ist. In general, various installation spaces are known for arranging an electrical energy storage unit, for example on a vehicle underbody, in the transmission tunnel, under a rear seat bench or in the trunk, in particular a spare wheel recess. A solution is described below, which optimizes a usable installation space for arranging the electrical energy storage unit 5 in the vehicle 1, so that a relatively high electrical range can be achieved using the electrical energy made available in the electrical energy storage unit 5 while complying with safety requirements, in particular for side impact protection , and also the lowest possible total weight of the vehicle, is possible in a cost-effective manner.
Der Aufbau 3 des in Fig. 1 dargestellten Ausführungsbeispiels des erfindungsgemäßen Fahrzeugs 1 ist vorzugsweise als selbsttragende Karosserie ausgebildet. Zu erkennen sind insbesondere Karosseriesäulen 9, sogenannte A-Säulen, Karosseriesäulen 11, sogenannte B-Säulen, Karosseriesäulen 13, sogenannte C-Säulen, ein Dachelement 14 sowie auch als äußere Längsträger bezeichneten Seitenschweller 15 ist. Die Öffnung 7 wird in Fahrzeugquerrichtung (y-Richtung) durch die Seitenschweller 15 und in Fahrzeuglängsrichtung durch entsprechende Karosserieteile, beispielsweise einer vorderen Stirnwand 17 beziehungsweise einem vorderen, die Seitenschweller 15 in Fahrzeugquerrichtung miteinander verbindenden Querträger, und einer hinteren Abschlusswand 19 beziehungsweise einem hinteren, die Seitenschweller 15 miteinander verbindenden Querträger, begrenzt. Die Öffnung 7 befindet sich also im Bereich, das heißt im Fußraum eines auch als Fahrgastzelle bezeichneten Fahrgastraums 21 und ist bei diesem Ausführungsbeispiel vollkommen frei von zusätzlichen Längsträgern und Querträgern, welche die Stirnwand 17 und die Abschlusswand 19 beziehungsweise die Seitenschweller 15 miteinander verbindet. Besonders gut aus Zusammenschau mit den Fig. 2 und 3 ist erkennbar, dass die Energiespeichereinheit 5 einen Tragrahmen 23 aufweist, welcher im vollständig hergestellten Zustand des Kraftfahrzeugs zerstörungsfrei beziehungsweise reversibel lösbar an dem Aufbau 3 befestigbar beziehungsweise befestigt ist, so dass die Energiespeichereinheit 5 an dem Aufbau 3 über den Tragrahmen 23 reversibel lösbar befestigt ist. Der rechteckförmige, umfangseitig geschlossene Tragrahmen 23 umfasst seitliche, in Fahrzeugquerrichtung in einem Abstand voneinander angeordnete Längsträgerelemente 25, welche über vordere und hintere Querträgerelemente 27, welche in Fahrzeuglängsrichtung einen Abstand voneinander aufweisen und von denen in Darstellung gemäß Figur 3 lediglich das vordere Querträgerelement 27 erkennbar ist, miteinander verbunden sind. The structure 3 of the exemplary embodiment of the vehicle 1 according to the invention shown in FIG. 1 is preferably designed as a self-supporting body. In particular, body pillars 9, so-called A pillars, body pillars 11, so-called B pillars, body pillars 13, so-called C pillars, a roof element 14 and side skirts 15, also referred to as outer longitudinal members, can be seen. The opening 7 is made in the transverse direction of the vehicle (y-direction) by the side skirts 15 and in the longitudinal direction of the vehicle by corresponding body parts, for example a front bulkhead 17 or a front cross member that connects the side skirts 15 to one another in the transverse direction of the vehicle, and a rear end wall 19 or a rear one that Side skirts 15 interconnecting cross members, limited. The opening 7 is therefore located in the area, i.e. in the footwell, of a passenger compartment 21, also referred to as a passenger compartment, and in this exemplary embodiment is completely free of additional longitudinal members and cross members, which connect the end wall 17 and the end wall 19 or the side skirts 15 to one another. It can be seen particularly well from a combination of FIGS. 2 and 3 that the energy storage unit 5 has a support frame 23 which, in the fully manufactured state of the motor vehicle, can be attached to the body 3 in a non-destructive or reversibly detachable manner, so that the energy storage unit 5 can be attached to the Structure 3 is reversibly attached to the support frame 23 in a detachable manner. The rectangular support frame 23, which is closed on the circumference, comprises lateral longitudinal support elements 25 which are arranged at a distance from one another in the transverse direction of the vehicle and which have front and rear transverse support elements 27 which are at a distance from one another in the longitudinal direction of the vehicle and of which only the front transverse support element 27 can be seen in the representation according to Figure 3 , are connected to each other.
Festzuhalten bleibt noch, dass bei diesem in den Figuren dargestellten, besonders bevorzugten Ausführungsbeispiel die Seitenschweller 15 mehrteilig ausgebildet sind und jeweils ein insbesondere schalenförmig oder als Strangpressprofil ausgebildetes, inneres beziehungsweise innenliegendes Längsträgerelement 25 aufweisen, welches gleichzeitig einen Teil des Tragrahmens 23 der Energiespeichereinheit 5 bildet, und ein äußeres beziehungsweise außenliegendes Längsträgerelement 35. Diese äußeren Längsträgerelemente 35 können Teil einer Seitenwand 37 der Fahrzeugkarosserie/des Aufbaus 3 sein und werden bei in die Karosserieöffnung 7 eingesetzter Energiespeichereinheit 5 mit den einen Teil des Tragrahmens 25 bildenden Längsträgerelementen 25 verbunden, beispielsweise mittels mechanischer Verbindungsmittel 39, von denen in Figur 2 eines erkennbar ist, und/oder mittels einer Stoffschlussverbindung und/oder Formschlussverbindung. Vorteilhaft ist hier, dass ein Bauteil der Energiespeichereinheit 5 eine Doppelfunktion aufweist, nämlich die Längsträgerelemente 25, welche sowohl einen Teil des Tragrahmens 23 der Energiespeichereinheit bilden, als auch einen Teil des Karosserierohbaus, nämlich den Seitenschwellern. What remains to be noted is that in this particularly preferred exemplary embodiment shown in the figures, the side skirts 15 are designed in multiple parts and each have an inner or inner longitudinal support element 25, which is designed in particular in the form of a shell or as an extruded profile, and which at the same time forms part of the support frame 23 of the energy storage unit 5. and an outer or external longitudinal member element 35. These outer longitudinal member elements 35 can be part of a side wall 37 of the vehicle body/structure 3 and, when the energy storage unit 5 is inserted into the body opening 7, are connected to the longitudinal member elements 25 that form part of the support frame 25, for example by means of mechanical connecting means 39, one of which can be seen in FIG. 2, and/or by means of a material connection and/or positive connection. It is advantageous here that a component of the energy storage unit 5 has a dual function, namely the longitudinal support elements 25, which form both part of the support frame 23 of the energy storage unit and part of the body shell, namely the side skirts.
Des Weiteren umfasst die Energiespeichereinheit 5 eine Mehrzahl von elektrisch miteinander verbunden Speichermodulen, welche vorzugsweise zerstörungsfrei lösbar an dem Tragrahmen 23 beziehungsweise in mindestens einem Aufnahmeraum innerhalb des Tragrahmens 23 angeordnet und befestigt sind. Derartige elektrische Speichermodule sind bekannt, so dass hier nicht näher darauf eingegangen wird. Furthermore, the energy storage unit 5 comprises a plurality of storage modules electrically connected to one another, which are preferably arranged and fastened in a non-destructively detachable manner on the supporting frame 23 or in at least one receiving space within the supporting frame 23 . Such electrical storage modules are known, so that they are not discussed in detail here.
Nach unten hin ist die Energiespeichereinheit 5 beziehungsweise deren Tragrahmen 23, das heißt insbesondere der die Speichermodule aufnehmende Aufnahmeraum, mittels eines plattenförmigen Bodenelements 29, vorzugsweise flüssigkeitsdicht, verschlossen. Dieses Bodenelement 29 wird auch als unterer Deckel bezeichnet. Zwischen dem Bodenelement 29 und dem Tragrahmen 23 ist hier noch eine Isolierung 31 in Form eines flächigen Elements vorgesehen. Das Bodenelement 27 ist mittels geeigneter Befestigungsmittel, beispielsweise Schrauben oder Schraubelemente, zerstörungsfrei lösbar am Tragrahmen 23 gehalten, derart, dass es auch bei im Fahrzeug 1 verbauten Zustand der Energiespeichereinheit 5 vom Tragrahmen 23 gelöst und abgenommen werden kann. Somit ist die Zugänglichkeit zu den Speichermodulen zu Wartungszwecken oder Austausch in einfacher Weise ermöglicht. The energy storage unit 5 or its supporting frame 23, that is to say in particular the receiving space accommodating the storage modules, is connected downwards by means of a plate-shaped base element 29, preferably liquid-tight, closed. This base element 29 is also referred to as the lower cover. Between the floor element 29 and the support frame 23 there is also insulation 31 in the form of a flat element. The base element 27 is non-destructively held on the support frame 23 by means of suitable fasteners, for example screws or screw elements, such that it can be detached from the support frame 23 and removed even when the energy storage unit 5 is installed in the vehicle 1 . Access to the memory modules for maintenance purposes or replacement is thus made possible in a simple manner.
Nach oben hin ist die Energiespeichereinheit 5 beziehungsweise deren Tragrahmen 23 und der die Speichermodule aufnehmende Aufnahmeraum mittels eines plattenförmigen Deckelelements 33, vorzugsweise flüssigkeitsdicht, verschlossen. Dieses auch als oberer Deckel bezeichnete Deckelelement 33 bildet bei in den Aufbau 3 von unten in deren Öffnung 7 eingesetzter Energiespeichereinheit 7 den Hauptboden der Fahrzeugkarosserie, welches im fertigstellten Zustand des Kraftfahrzeugs ein Eindringen von Flüssigkeit und Feuchte in den Innenraum des Fahrzeugs verhindert. Das Deckelelement 33 weist also auch eine Doppelfunktion auf, nämlich Verschlusselemente der Energiespeichereinheit und gleichzeitig Hauptboden der Karosserie. Das flächige, insbesondere tafelförmiges, vorzugsweise eigensteife Deckelelement 33 kann einteilig oder mehrteilig ausgebildet sein. Erfindungsgemäß ist also vorgesehen, die elektrische Energiespeichereinheit 5 in die Fahrzeugkarosserie so zu integrieren, dass diese Funktionen des Fahrzeugaufbaus 3 übernimmt oder unterstützt. Damit kann der Aufbau 3 mit einem geringeren Gewicht realisiert und/oder eine besonders große Energiespeichereinheit in das Fahrzeug 1 integriert werden. The energy storage unit 5 or its supporting frame 23 and the receiving space accommodating the storage modules are closed at the top by means of a plate-shaped cover element 33, preferably in a liquid-tight manner. This cover element 33, also referred to as the upper cover, forms the main floor of the vehicle body when the energy storage unit 7 is inserted into the structure 3 from below in its opening 7, which prevents liquid and moisture from penetrating the interior of the vehicle when the motor vehicle is in the finished state. The cover element 33 therefore also has a dual function, namely closure elements of the energy storage unit and at the same time the main floor of the body. The flat, in particular tabular, preferably inherently rigid cover element 33 can be designed in one piece or in multiple pieces. According to the invention, it is therefore provided that the electrical energy storage unit 5 is integrated into the vehicle body in such a way that it takes over or supports these functions of the vehicle body 3 . The body 3 can thus be realized with a lower weight and/or a particularly large energy storage unit can be integrated into the vehicle 1 .
Zur bevorzugten Herstellung der elektrischen Energiespeichereinheit 5: Die elektrische Energiespeichereinheit 5 wird insbesondere in ihrem Herstellwerk montiert, also unabhängig vom Aufbau 3 des Fahrzeugs 1. Dabei erfüllt deren Unterseite beziehungsweise das Bodenelement 29 bei im Fahrzeug montiertem Zustand der Energiespeichereinheit 5 die Funktion eines Unterbodens des Fahrzeuges 1 , also dem Teil des Fahrzeugs, welcher einer Fahrbahn zugewandt ist. Die Batteriemodule werden in den Tragrahmen 23 eingesetzt. Anschließend wird das Deckelelement 33 als Fahrgastraumboden auf das Modul mit dem Tragrahmen 23 aufgesetzt. Nachfolgend oder vorher wird der Aufnahmeraum des Tragrahmens 23 mittels des unteren Deckels (Bodenelement 29) verschlossen. Darauffolgend wird die elektrische Energiespeichereinheit 5 mit ihrer Elektrik und Elektronik entsprechend verschaltet, um beispielsweise Montagevorgänge in der Produktion weiter auszuführen. For the preferred production of the electrical energy storage unit 5: The electrical energy storage unit 5 is assembled in particular in its manufacturing plant, i.e. independently of the body 3 of the vehicle 1. Its underside or the floor element 29 fulfills the function of an underbody of the vehicle when the energy storage unit 5 is installed in the vehicle 1, ie the part of the vehicle which faces a roadway. The battery modules are inserted into the support frame 23 . The cover element 33 is then placed on the module with the support frame 23 as the passenger compartment floor. The receiving space of the support frame 23 is then closed by means of the lower cover (bottom element 29) or beforehand. Subsequently, the electric Energy storage unit 5 with its electrics and electronics connected accordingly, for example, to carry out further assembly processes in production.
Die elektrische Energiespeichereinheit 5 mit ihrem Tragrahmen 23 bildet also den Unterboden des Fahrzeuges 1 , wobei der Fahrzeugrohbau nach seiner Fertigung zunächst keinen Unterboden aufweist. Der mittels der elektrischen Energiespeichereinheit 5 gebildete Unterboden wird in der Montage des Fahrzeuges 1 am Rohbau befestigt beziehungsweise erst mit der Montage der Energiespeichereinheit 5 ausgebildet. Der Unterboden, welcher mittels des elektrischen Energiespeichereinheit 5 gebildet ist, wird also in der Montage in den Rohbau integriert und ist somit ein Montagebauteil. The electrical energy storage unit 5 with its support frame 23 thus forms the underbody of the vehicle 1, with the vehicle shell initially having no underbody after its manufacture. The underbody formed by means of the electrical energy storage unit 5 is fastened to the shell during assembly of the vehicle 1 or is formed only when the energy storage unit 5 is assembled. The underbody, which is formed by means of the electrical energy storage unit 5, is therefore integrated into the shell during assembly and is therefore an assembly component.
Weiterhin ist bei dem in den Figuren dargestellten Ausführungsbeispiel vorgesehen, dass die elektrische Energiespeichereinheit 5 zusätzlich noch mit Sitzquerträgern 41, vorzugsweise alle Sitzquerträgern, einem Mitteltunnel 43 sowie mit Konsolenelementen 45 versehen ist. Dabei sind die Sitzquerträger 41 , der Mitteltunnel 43 und die Konsolenelemente 45 auf dem den Hauptboden bildenden Deckelelement 33 aufgesetzt und daran befestigt. Alternativ kann vorgesehen sein, dass eines oder mehrerer dieser Bauteile auch einstückig mit dem Deckelelement 33 ausgebildet ist. Insbesondere werden die Sitzquerträger 41 nach der Montage der Energiespeichereinheit 5 mit dem Aufbau 3 des Fahrzeugs 1 verbunden, beispielsweise verschraubt, was die Stabilität der Fahrzeugkarosserie verbessert. Des Weiteren ist auf und/oder an dem Deckelelement 33 eine Box 47 angeordnet und/oder ausgebildet, in welcher eine Mehrzahl von Hochvolt- Elektrik-/Elektronikkomponenten angeordnet sind. Insbesondere ist die Box 47 für die Montage mit dem Deckelelement 33 gefügt. Furthermore, in the exemplary embodiment illustrated in the figures, it is provided that the electrical energy storage unit 5 is additionally provided with seat cross members 41 , preferably all seat cross members, a center tunnel 43 and console elements 45 . The seat cross member 41, the center tunnel 43 and the console elements 45 are placed on the cover element 33 forming the main floor and fastened thereto. Alternatively, it can be provided that one or more of these components is also formed in one piece with the cover element 33 . In particular, after the assembly of the energy storage unit 5, the seat cross members 41 are connected to the structure 3 of the vehicle 1, for example screwed, which improves the stability of the vehicle body. Furthermore, a box 47 is arranged and/or formed on and/or on the cover element 33, in which a plurality of high-voltage electrical/electronic components are arranged. Specifically, the box 47 is joined to the lid member 33 for assembly.
Die elektrische Energiespeichereinheit 5 als Batteriesystem weist zudem eine nicht näher dargestellte untere Kühlplatte, Stromschienen, eine Kühlleitung, eine obere Kühlplatte, Stromschienen für eine Kontaktierung und Steuerleitungen, ein Batteriemanagementsystem, einen Hochvolt-Schutzdeckel, eine Isolierung und den unteren Gehäusedeckel (Bodenelemente 29) auf, welcher mit den Seitenschwellern 15 für einen vergleichsweise einfachen Service und eine einfache Montage verschraubt ist. The electrical energy storage unit 5 as a battery system also has a lower cooling plate (not shown in detail), busbars, a cooling line, an upper cooling plate, busbars for contacting and control lines, a battery management system, a high-voltage protective cover, insulation and the lower housing cover (floor elements 29). , which is bolted to the side skirts 15 for comparatively easy service and assembly.
Wie in der in Figur 2 gezeigten Schnittdarstellung dargestellt ist, ist der jeweilige Seitenschweller 15 zu einer Hälfte in den Tragrahmen 23 integriert und bildet insbesondere den Gehäuserahmen. Eine weitere Hälfte des Seitenschwellers ist außen an der Seitenwand 37 der Karosserie des Fahrzeuges 1 angeordnet. Dabei sind im fertig verbauten Zustand die beiden Hälften des jeweiligen Seitenschwellers 15 miteinander verschraubt und/oder mittels einer anderen geeigneten Verbindungstechnik aneinander befestigt. As shown in the sectional view shown in FIG. 2, one half of the respective side sill 15 is integrated into the supporting frame 23 and in particular forms the housing frame. Another half of the side sill is arranged on the outside of the side wall 37 of the body of the vehicle 1 . In the fully installed state, the two halves of the respective side sill 15 are together screwed and/or attached to one another by means of another suitable connection technique.
Insbesondere das Deckelelement 33 der elektrischen Energiespeichereinheit 5 ist fahrzeugspezifisch ausgebildet, da verschiedene Fahrzeugklassen unterschiedliche Unterbodenstrukturen aufweisen. Vorzugsweise ist der Tragrahmen 23 und gegebenenfalls auch das Bodenelement 29 baureihenübergreifend einsetzbar und lediglich das Deckelelement 33 ist für jeden Fahrzeugtyp anders beziehungsweise entsprechend angepasst. In particular, the cover element 33 of the electrical energy storage unit 5 is vehicle-specific, since different vehicle classes have different underbody structures. Preferably, the supporting frame 23 and possibly also the base element 29 can be used across model series and only the cover element 33 is adapted differently or correspondingly for each vehicle type.
Der Aufbau 3 kann in seiner Fertigung wie üblich aufgebaut werden und einen bestimmten Beschichtungsprozess durchlaufen, wobei ein hinterer Sitzquerträger, das heißt zur Anbringung von Fondsitzen, zur Versteifung am Aufbau 3 selbst verbleiben, das heißt vorgesehen sein kann. The body 3 can be built up as usual in its production and go through a specific coating process, with a rear seat cross member, ie for attaching rear seats, remaining on the body 3 itself for reinforcement, ie it can be provided.
Der Fahrzeugaufbau 3 mit seinem elektrischen Antriebsstrang und der elektrischen Energiespeichereinheit 5 erfüllt Steifigkeits-, Festigkeits- und sogenannte Crashanforderungen erst im zusammengebauten Zustand. The vehicle body 3 with its electric drive train and the electric energy storage unit 5 only meets rigidity, strength and so-called crash requirements in the assembled state.
Batteriemodule beziehungsweise Einzelzellen der elektrischen Energiespeichereinheit 5 werden bei einem derart ausgebildeten Batteriesystem nur in einer Struktur montiert, welche als Hochvolt-Schutz dient, wobei entlang dieser Struktur innerhalb einer Fahrzeugstruktur keine Lastpfade im Kollisionsfall des Fahrzeuges 1 geführt werden. In a battery system designed in this way, battery modules or individual cells of the electrical energy storage unit 5 are only mounted in a structure that serves as high-voltage protection, with no load paths being routed along this structure within a vehicle structure in the event of a collision of the vehicle 1 .
Der Bauraum zur Anordnung der elektrischen Energiespeichereinheit 5 wird verbessert genutzt, da sich keine versteifenden Strukturen in dem Bauraum befinden. Das Modul der elektrischen Energiespeichereinheit 5 wird in eine Fahrzeugunterbodenstruktur integriert, wobei der jeweilige Seitenschweller 15 mit seinen zwei Hälften, die als Profile ausgeführt sind, zur Trennung zwischen elektrischer Energiespeichereinheit 5 und Aufbau 3 genutzt wird. The installation space for arranging the electrical energy storage unit 5 is used in an improved manner, since there are no stiffening structures in the installation space. The module of the electrical energy storage unit 5 is integrated into a vehicle underbody structure, the respective side sill 15 with its two halves, which are designed as profiles, being used to separate the electrical energy storage unit 5 and the body 3 .
Die vorgeschlagene Lösung beschreibt eine Leichtbau-Integration einer elektrischen Energiespeichereinheit 5 in einen Aufbau 3 eines Fahrzeuges 1. Im Kollisionsfall des Fahrzeuges 1 wird Tragrahmen 23 der Energiespeichereinheit vergleichsweise gering belastet, da die Lastpfade entlang des Rohbaus um den elektrischen Energiespeicher herum verlaufen. Die elektrische Energiespeichereinheit 5 mit ihren verschalteten Einzelzellen wird fertigöder vormontiert an das Montageband, an welchem die Energiespeichereinheit 5 am Aufbau 3 angebracht wird, geliefert werden. Dadurch kann weitestgehend ausgeschlossen werden, dass Hochvolt-Arbeiten am Montageband durchgeführt werden müssen. The proposed solution describes a lightweight integration of an electrical energy storage unit 5 in a body 3 of a vehicle 1. In the event of a collision of the vehicle 1, the load on the supporting frame 23 of the energy storage unit is comparatively low, since the load paths run along the shell around the electrical energy storage device. The electrical energy storage unit 5 with its interconnected individual cells is delivered finished or pre-assembled to the assembly line on which the energy storage unit 5 is attached to the structure 3 . This largely rules out the need for high-voltage work to be carried out on the assembly line.
Die Einzelzellen sind zu einem Großmodul verschaltet und hoch integriert, wobei ein Bauraum im Tragrahmen 23 optimiert ausgenutzt wird. Zudem befinden sich keine versteifenden Strukturen im Tragrahmen 23, so dass mehr Bauraum für Einzelzellen zur Verfügung steht und somit eine Energiedichte der elektrischen Energiespeichereinheit 5 optimiert werden kann. The individual cells are connected to form a large module and are highly integrated, with space in the supporting frame 23 being optimally utilized. In addition, there are no stiffening structures in the support frame 23, so that more installation space is available for individual cells and an energy density of the electrical energy storage unit 5 can thus be optimized.
Das Deckelelement 33 bildet also den Fahrzeughauptboden, wobei die Box 47 und Niedervolt-Elektrik-/Elektronikumfänge auf dem Deckelelement 33 der elektrischen Energiespeichereinheit 5 oberhalb der Einzelzellen angeordnet sind. Insbesondere sind die Komponenten der Niedervolt-Elektrik-/Elektronikumfänge im sogenannten Tunnel des Fahrzeuges 1 angeordnet. The cover element 33 thus forms the main floor of the vehicle, with the box 47 and low-voltage electrical/electronic components being arranged on the cover element 33 of the electrical energy storage unit 5 above the individual cells. In particular, the components of the low-voltage electrics/electronics are arranged in the so-called tunnel of the vehicle 1 .
Der Karosserieaufbau 3 wird mittels temporärer, entnehmbarer Versteifungsstrukturen vor der Integration der elektrischen Energiespeichereinheit 5 in den Aufbau 3 soweit stabilisiert, dass der Aufbau 3 eine kathodische Tauchlackierung und sonstige Korrosionsschutzmaßnahmen und eine Lackierung passieren kann. Der Aufbau 3 wird auf eine optimale Steifigkeit und Festigkeit bei integrierter elektrischen Energiespeichereinheit 5 und gefügten Seitenwänden ausgelegt. The body structure 3 is stabilized by means of temporary, removable stiffening structures before the integration of the electrical energy storage unit 5 into the structure 3 to such an extent that the structure 3 can undergo cathodic dip painting and other anti-corrosion measures and painting. The structure 3 is designed for optimal rigidity and strength with an integrated electrical energy storage unit 5 and joined side walls.
Die temporären Versteifungsstrukturen werden vor der Montage der elektrischen Energiespeichereinheit 5 ausgetauscht. Durch die Montage der elektrischen Energiespeichereinheit 5 und das Verbinden der Sitzquerträger 41 und des Tragrahmens 23 mit dem Aufbau 3 über die Hälften der Seitenschweller 15 erhält die Karosserie ihre finale Stabilität und Steifigkeit. The temporary stiffening structures are exchanged before the electrical energy storage unit 5 is assembled. The assembly of the electrical energy storage unit 5 and the connection of the seat cross member 41 and the support frame 23 to the body 3 via the halves of the side skirts 15 gives the body its final stability and rigidity.
Mittels des Deckelelements 33 und des unteren Bodenelements 29 ist der Innenraum des Tragrahmens 23 abgedichtet verschlossen, wobei die elektrische Energiespeichereinheit 5 betriebsbereit an das Montageband geliefert wird. An dem Montageband erfolgt deren elektrische Kontaktierung mit dem jeweiligen elektrischen Antriebsstrang. Insbesondere sind eine Kühlfunktion und eine dazu erforderliche Medienführung in das Deckelelement 33 integriert, welcher beispielsweise in einer Wabensandwichstruktur ausgeführt ist. The interior of the support frame 23 is sealed off by means of the cover element 33 and the lower base element 29 , the electrical energy storage unit 5 being delivered to the assembly line ready for operation. Electrical contact is made with the respective electric drive train on the assembly line. In particular, a cooling function and a media guide required for this are integrated into the cover element 33, which is designed, for example, in a honeycomb sandwich structure.
Wie oben beschrieben weist der Aufbau 3 einen geteilten Seitenschweller 15 auf, dessen eine Hälfte durch Strukturen am Tragrahmen 23, beispielsweise Ventingkanäle, und dessen weitere Hälfte durch Strukturen der Seitenwand 37 des Aufbaus 3 gebildet ist. Der Seitenschweller 15 entsteht final mittels Fügen der Seitenwand an dem Tragrahmen 23, nachdem die elektrische Energiespeichereinheit 5 in den Aufbau 3 eingebracht und integriert ist. As described above, the structure 3 has a split side sill 15, one half of which is formed by structures on the support frame 23, for example venting channels, and the other half is formed by structures of the side wall 37 of the structure 3. The side sill 15 is finally created by joining the side wall to the support frame 23 after the electrical energy storage unit 5 has been introduced into the body 3 and integrated.
In den Seitenschwellern 15 sind Ventingkanäle zur Ableitung heißer Gase bei einem sogenannten thermischen Durchgehen von Einzelzellen der elektrischen Energiespeichereinheit 5 integriert. Venting channels for discharging hot gases in the event of a so-called thermal runaway of individual cells of the electrical energy storage unit 5 are integrated in the side sills 15 .
Der Seitenschweller 15 bildet einen Lastpfad für Längskräfte, insbesondere bei einem Frontalaufprall des Fahrzeuges 1. Zudem stützt der Seitenschweller 15 Querkräfte ab und stellt eine Deformationszone, insbesondere bei einer Seitenkollision des Fahrzeuges 1 , dar. Auch können in den Seitenschweller 15 Sensoren integriert sein, beispielsweise in Form von Dehnmessstreifen, um eine mechanische Beanspruchung des Seitenschwellers 15 und gegebenenfalls der elektrischen Energiespeichereinheit 5 zu messen. Gemessene Daten können in einem Steuergerät abgelegt werden, so dass erfasst werden kann, ob die elektrische Energiespeichereinheit 5 nach einer Kollision des Fahrzeuges 1 beschädigt beziehungsweise mechanisch beansprucht wurde. Derartige Sensoren können auch in die Sitzquerträger 41 integriert werden. The side skirt 15 forms a load path for longitudinal forces, in particular in the event of a frontal collision of the vehicle 1. In addition, the side skirt 15 supports transverse forces and represents a deformation zone, in particular in the event of a side collision of the vehicle 1. Sensors can also be integrated into the side skirt 15, for example in the form of strain gauges, in order to measure a mechanical stress on the side sill 15 and optionally on the electrical energy storage unit 5 . Measured data can be stored in a control device so that it can be detected whether the electrical energy storage unit 5 was damaged or mechanically stressed after a collision of the vehicle 1. Such sensors can also be integrated into the seat cross member 41 .
Auch können in den Seitenschweller 15 Sensoren, zum Beispiel Temperatursensoren und/oder Gassensoren, integriert sein, um ein Ereignis eines thermischen Durchgehens zu detektieren und Sicherheitsmaßnahmen einzuleiten. Sensors, for example temperature sensors and/or gas sensors, can also be integrated into the side sill 15 in order to detect a thermal runaway event and initiate safety measures.
Im Reparaturfall der elektrischen Energiespeichereinheit 5 ist vorgesehen, dass die weitere äußere Hälfte des Seitenschwellers 35, welche einen integrierten Bestandteil des Aufbaus 3 bildet, und die Sitzquerträger 41 am Fahrzeug 1 verbleiben. Der untere Gehäusedeckel (Bodenelemente 29) wird geöffnet, wobei über sogenannte Schnellkupplungen Kühlleitungen entkoppelt werden können. Steckverbinder für Strom- und/oder Steuerumfänge der elektrischen Energiespeichereinheit 5 werden vom Innenraum des Fahrzeuges 1 , dort, wo die Elektrik/Elektronik angeordnet ist, entriegelt und gelöst. Dabei erfolgt ein Zugang zu den Steckverbindern über sogenannte Serviceöffnungen. Ist dies ausgeführt, kann die elektrischen Energiespeichereinheit 5 oder ein sogenanntes Batteriepack, beispielsweise das Großmodul, von unten aus dem Tragrahmen 23 entnommen werden. If the electrical energy storage unit 5 is to be repaired, the other outer half of the side sill 35, which forms an integral part of the body 3, and the seat cross member 41 remain on the vehicle 1. The lower housing cover (bottom elements 29) is opened, and cooling lines can be decoupled via so-called quick-release couplings. Plug connectors for power and/or control scopes of the electrical energy storage unit 5 are unlocked from the interior of the vehicle 1, where the electrics/electronics are arranged and resolved. The connectors are accessed via so-called service openings. Once this has been done, the electrical energy storage unit 5 or a so-called battery pack, for example the large module, can be removed from the support frame 23 from below.
Ein solches Batteriepack weist ein vergleichsweise dünnwandiges inneres Gehäuse auf, welches aufgrund einer Hochvolt-Sicherheit geschlossen ist. Nach einem Ausbau wird das Batteriepack in einem versteifenden und isolierenden Transportgehäuse verstaut und kann somit sicher zu einem Reparaturzentrum transportiert werden. Such a battery pack has a comparatively thin-walled inner housing, which is closed due to high-voltage security. After removal, the battery pack is stowed in a stiffening and insulating transport case and can thus be safely transported to a repair center.
In einer möglichen Ausführung erhält ein Kunde umgehend eine Austauschbatterie, so dass eine Standzeit des Fahrzeuges 1, insbesondere mit geschwächter Rohbaustruktur, verringert werden kann. In one possible embodiment, a customer immediately receives a replacement battery, so that the downtime of the vehicle 1, in particular with a weakened shell structure, can be reduced.
Hinsichtlich einer Antriebsflexibilität ist eine Unterbodenvariante denkbar, welche eine Integration eines verbrennungsmotorischen Antriebes in den Aufbau 3 erlaubt. With regard to drive flexibility, an underbody variant is conceivable which allows an internal combustion engine drive to be integrated into the body 3 .
Das Großmodul der elektrischen Energiespeichereinheit 5 mit innerer Hälfte 25 des jeweiligen Seitenschwellers 15 ist innerhalb einer Architektur für alle Derivate gleich, wobei eine Kosteneinsparung daraus resultieren kann, dass ein gleiches Schwellerprofil, also die innere Hälfte 25 des Seitenschwellers 15, über alle Baureihen, beispielsweise Limousine, SUV, verwendet wird. Dadurch ist es erforderlich, dass im Wesentlichen nur das Deckelelements 33 und das äußere Seitenschwellerelement 37 angepasst werden muss. The large module of the electrical energy storage unit 5 with the inner half 25 of the respective side sill 15 is the same within one architecture for all derivatives, with a cost saving resulting from the fact that the same sill profile, i.e. the inner half 25 of the side sill 15, across all series, for example sedan , SUV, is used. This means that essentially only the cover element 33 and the outer side sill element 37 have to be adjusted.

Claims

Patentansprüche Fahrzeug (1) mit einer im Bereich eines Fahrzeugbodens angeordneten, einen Tragrahmen (23) aufweisenden, elektrischen Energiespeichereinheit (5), dadurch gekennzeichnet, dass Vehicle (1) with an electrical energy storage unit (5) which is arranged in the area of a vehicle floor and has a supporting frame (23), characterized in that
- die elektrische Energiespeichereinheit (5) zumindest abschnittsweise einen Unterboden des Fahrzeuges (1) bildet, - the electrical energy storage unit (5) at least partially forms an underbody of the vehicle (1),
- ein Deckelelement (33) der elektrischen Energiespeichereinheit (5) zumindest einen Abschnitt eines Fahrgastraumbodens des Fahrzeuges (1) bildet, - a cover element (33) of the electrical energy storage unit (5) forms at least a section of a passenger compartment floor of the vehicle (1),
- eine Anzahl von Sitzquerträgern (4) und/oder ein Mitteltunnel (5) in das Deckelelement (33) integriert und/oder auf dem Deckelelement (33) angeordnet sind/ist. Fahrzeug (1) nach Anspruch 1 , dadurch gekennzeichnet, dass auf und/oder an dem Deckelelement (33) eine Box (47) angeordnet und/oder ausgebildet ist, welche eine Mehrzahl von Hochvolt- Elektrik-/Elektronikkomponenten enthält. Fahrzeug (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zumindest ein Seitenschweller (15) des Fahrzeuges (1) zumindest teilweise in den Tragrahmen (3) der elektrischen Energiespeichereinheit (5) integriert ist. Fahrzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Tragrahmen (23) nach unten hin mittels eines - auch bei im Fahrzeug (1) verbauter elektrischer Energiespeichereinheit (5) - von dieser lösbaren Bodenelementes (29) verschlossen ist. Fahrzeug (1) nach Anspruch 3, dadurch gekennzeichnet, dass der zumindest eine Seitenschweller (15) zumindest teilweise den Tragrahmen (23) bildet. Energiespeichereinheit für ein Fahrzeug nach einem der vorhergehenden Ansprüche. - A number of seat cross members (4) and/or a center tunnel (5) are integrated into the cover element (33) and/or are arranged on the cover element (33). Vehicle (1) according to claim 1, characterized in that on and / or on the cover element (33) a box (47) is arranged and / or formed, which contains a plurality of high-voltage electrical / electronic components. Vehicle (1) according to Claim 1 or 2, characterized in that at least one side sill (15) of the vehicle (1) is at least partially integrated into the supporting frame (3) of the electrical energy storage unit (5). Vehicle according to one of the preceding claims, characterized in that the supporting frame (23) is closed at the bottom by means of a base element (29) which can be detached from the electric energy storage unit (5) even if it is installed in the vehicle (1). Vehicle (1) according to Claim 3, characterized in that the at least one side skirt (15) at least partially forms the supporting frame (23). An energy storage unit for a vehicle according to any one of the preceding claims.
PCT/EP2022/079540 2021-10-29 2022-10-24 Vehicle having an electrical energy storage unit WO2023072807A1 (en)

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