SE2150957A1 - Structural Rechargeable Electric Energy Storage System - Google Patents

Structural Rechargeable Electric Energy Storage System

Info

Publication number
SE2150957A1
SE2150957A1 SE2150957A SE2150957A SE2150957A1 SE 2150957 A1 SE2150957 A1 SE 2150957A1 SE 2150957 A SE2150957 A SE 2150957A SE 2150957 A SE2150957 A SE 2150957A SE 2150957 A1 SE2150957 A1 SE 2150957A1
Authority
SE
Sweden
Prior art keywords
reess
electric vehicle
constitutes
unibody
load
Prior art date
Application number
SE2150957A
Inventor
Björn Gustavson
David Stephenson
Kent Stake
Morgan Börjesson
Original Assignee
Nat Electric Vehicle Sweden Ab
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 Nat Electric Vehicle Sweden Ab filed Critical Nat Electric Vehicle Sweden Ab
Priority to SE2150957A priority Critical patent/SE2150957A1/en
Priority to PCT/SE2022/050695 priority patent/WO2023287341A1/en
Publication of SE2150957A1 publication Critical patent/SE2150957A1/en

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/005—Arrangement or mounting of seats in vehicles, e.g. dismountable auxiliary seats
    • B60N2/015—Attaching seats directly to vehicle chassis
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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

Abstract

The present invention relates to a rechargeable electric energy storage system (REESS). The REESS is adapted to be arranged against and attached to an electric vehicle unibody, so as to constitute an electric vehicle chassis, wherein the REESS is configured such that: a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the electric vehicle chassis; a lower side of the REESS constitutes an underside of the electric vehicle chassis; and an upper side of the REESS constitutes a floor of a passenger cabin of the electric vehicle chassis, such that the REESS in itself constitutes a load bearing member of the electric vehicle chassis.

Description

Technical field The present invention relates to the field of rechargeable electric energy storage systems as structural members of an electric vehicle Background When designing electric vehicles, one of the main structural challenges is the integration of the rechargeable electric energy storage system (REESS), since it demands a lot of space in order to fulfill the energy requirement of the vehicle - especially when public demand on the performance of electric vehicles as everyday cars is increasing.
A current trend of solutions is aiming at arranging battery packs between structural members of the vehicle, such as between load bearing crossbeams of a vehicle frame. An example of a current solution can be found in WO 2011/127026.
Still, such solutions rely on utilizing space defined by parts that are already present. Such spaces may be confined and hard to reach, which often leads to consequential issues with electrically connecting the battery pack to the vehicle, integrating heating and/or cooling solutions and the mounting of a battery pack.
Summary An object of the present inventive concept is therefore to overcome the above problems, and to provide a solution to at least some extent, improves the prior art. This, and other objects, which will become apparent in the following, is accomplished by means of a multifunctional structural rechargeable electric energy storage system (REESS). According to a first aspect of the present invention, a rechargeable electric energy storage system (REESS) is provided, the REESS being adapted to be arranged against and attached to an electric vehicle unibody, so as to constitute an electric vehicle chassis, wherein the REESS is 2 configured such that: a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the electric vehicle chassis; a lower side of the REESS constitutes an underside of the electric vehicle chassis; and an upper side of the REESS constitutes a floor of a passenger cabin of the electric vehicle chassis, such that the REESS in itself constitutes a load bearing member of the electric vehicle chassis.
That the REESS is configured as a load bearing member is to be understood that the REESS in and of itself supports the structure of the electric vehicle. As such, the REESS may e.g. absorb forces acting on the vehicle when the vehicle is in motion, the weight of any passenger sitting in the vehicle or any luggage placed in or on the vehicle.
A lateral side of the REESS is to be understood as a side facing a direction susbtantially parallel with the underlying surface on which the vehicle is to be arranged. A lateral side portion is thus a portion of such a lateral side. That a lateral side portion constitutes at least a part of a rocker may entail that the lateral side portion is visible from outside of the vehicle. The lateral side portion may further comprise an aestethic cover in order to provide the rocker of the vehicle with any intended appearance. The aestethic cover may e.g. be a plastic cover, a plastic film, a metallic film etc.
A lower side of the REESS is to be understood as a surface substantially facing the underlying surface on which the vehicle is to be arranged.
An upper side of the REESS is to be understood as a surface substantially facing away from the underlying surface on which the vehicle is to be arranged. The upper surface may further comprise an aestethic cover. aestethic cover of the upper surface may e.g. be a plastic cover or a textile cover.
Since the REESS according to the first aspect is arranged as the load bearing structure on which the unibody is arranged and supported, a more material efficient and space efficient REESS is provided. Furthermore, since 3 the REESS functions as a platform on which the unibody is mounted, the REESS is easier to mount.
According to at least one exemplary embodiment, the REESS further comprises at least one mounting means arranged on the upper side of the REESS, the at least one mounting means being adapted to receive a load.
Hereby, the REESS is capable of fulfilling multiple functionalities. As such, a multifunctional REESS is provided. Since there is no need for separate systems for mounting a load to the vehicle chassis, a more material efficient solution is provided.
A load may e.g. be a passenger seat. ln some embodiments, the at least one mounting means is a mounting rail adapted to receive a passenger seat, such that the passenger seat constitutes a load to be supported by the REESS. A load may e.g. be a seatbelt anchor. ln some embodiments, the at least one mounting means is adapted to receive a seatbelt anchor adapted to receive a seatbelt buckle, such that the seatbelt anchor constitutes a load to be supported by the REESS.
According to at least one exemplary embodiment, the lateral side portion further comprises a peripheral support surface adapted to be arranged against a lower rim portion of the electric vehicle unibody.
The the support surface is a peripheral surface is to be understood as the surface being arranged at the periphery of the REESS. Hereby, a larger area of contact between the REESS and the vehicle unibody is provided.
The peripheral support surface may e.g. be arranged around the full periphery of the REESS. Alternatively, the peripheral support surface may only extend along a portion, or a set ofdisjoint portions, of the periphery of the REESS.
According to a second aspect of the present invention, an electric vehicle is provided, the electric vehicle comprising an electric vehicle unibody and a rechargeable electric energy storage system (REESS) according to the first aspect of the present invention, wherein the REESS is arranged such that: a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the electric vehicle; a lower 4 side of the REESS constitutes an underside of the electric vehicle; an upper side of the REESS constitutes a floor of a passenger cabin of the electric vehicle, such that the REESS in itself constitutes a load bearing member of the vehicle chassis.
The same technical effects and benefits that have been described in relation to the first aspect of the present invention are applicable for the second aspect of the present invention.
According to at least one exemplary embodiment, the electric vehicle comprises a passenger seat comprising at least one fastening bracket with a shape complementary to the mounting means of the REESS such that the fastening bracket is adapted to be arranged on the mounting means of the REESS.
Hereby, an electric vehicle which is more easy to assemble is provided.
According to a third aspect of the present invention, a method of assembling an electric vehicle chassis is provided, the method comprising: mounting a REESS according to the first aspect of the present invention to an electric vehicle unibody such that a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the vehicle; a lower side of the REESS constitutes an underside of the electric vehicle; an upper side of the REESS constitutes a floor of a passenger cabin of the vehicle, thus producing an electric vehicle chassis.
The method according to the third aspect of the present invention presents an easier a more efficient way of assembling an electric vehicle chassis comprising a REESS.
According to at least one exemplary embodiment, the method comprises arranging at least one load on at least one mounting means arranged on the upper side of the REESS, wherein arranging at least one load is performed before mounting the REESS to the electric vehicle unibody.
Since a load is arranged on the REESS before the REESS is mounted to the unibody, instead of after the completion of a chassis, mounting of the load is easier since a worker or a tool does not have to reach into the chassis.
As such, a more time efficient method of assembling an electric vehicle chassis is provided. ln some embodiments, at least one load comprises arranging a passenger seat on at least one mounting rail arranged on the upper side of the REESS.. ln some embodiments, arranging at least one load comprises arranging a seatbelt buckle on at least one seatbelt anchor arranged on the upper side of the REESS. Hereby, the load mounted on the mounting means may e.g. be a seatbelt anchor or a passenger seat.
According to at least one exemplary embodiment, mounting the REESS to the electric vehicle unibody further comprises arranging a peripheral support surface of the REESS against a lower rim portion of the electric vehicle unibody.
Hereby, a large area of contact between the REESS and the vehicle unibody is provided such that the REESS is more capable of supporting the weight of the electric vehicle unibody.
Brief description of the drawinqs These and other embodiments of the present invention will now be described in more detail, with reference to the appended drawings showing exemplary embodiments of the present invention, wherein: Fig. 1 is a schematic perspective view of a Rechargeable Electric Energy Storage System (REESS) according to the present invention and a vehicle unibody.
Fig. 2 is a schematic perspective view of a REESS according to the present invention displaying two passenger seats adapted to be mounted to the REESS.
Fig. 3 is a schematic perspective view of the REESS in Fig. 1 when arranged against and attached to the vehicle unibody so as to constitute an electric vehicle chassis.
Fig. 4 is a perspective cross-sectional view of the electric vehicle chassis of Fig. 2. 6 Fig. 5 is a schematic cross-sectional view of the rocker section of the chassis.
Detailed descpription ln the following detailed description, some embodiments of the present invention will be described. However, it is to be understood that features of the different embodiments are exchangeable between the embodiments and may be combined in different ways, unless anything is specifically indicated. Even though in the following description, numerous details are set forth to provide a more thorough understanding of the present invention, it will be apparent to one skilled in the art that the present invention may be practiced without these details. ln other instances, well known constructions or functions are not described in detail, so as not to obscure the present invenfion.
Fig. 1 is a schematic perspective view of a Rechargeable Electric Energy Storage System (REESS) 1 according to the present invention and a vehicle unibody 2 to which the REESS 1 is adapted to be attached so as to constitute an electric vehicle chassis 3. The vehicle unibody could be any kind of unibody having any type of shape. The REESS 1 comprises a first and a second lateral side portion 4, 5, a lower side 7 and an upper side 9. The first and second lateral side portions 4, 5 are here opposite side portions of the REESS. Furthermore, the first and second lateral side portions 4, 5 are arranged substantially along a longitudinal extension of the vehicle unibody 2, i.e. the driving direction of a vehicle. The REESS 1 further comprises a plurality of mounting means 11 adapted to receive loads. Here, four mounting means 11 are mounting rails 13 adapted to receive a passenger seat 37 (shown in Fig. 2) such that a passenger seat 37 is a load. Moreover, four mounting means 11 are seatbelt anchors 15 adapted to receive a seatbelt buckle (not shown), such that a seatbelt anchor 15 is a load. A mounting means 11 may be any other device adapted to receive a load, such as an lsoFix Anchor, or a floor duct anchor adapted to receive a floor duct for 7 integrating HVAC solution with the REESS 1 etc. A mounting means 11 may further be a rear seat anchor.
The REESS 1 further comprises a peripheral support surface 17 adapted to be arranged against a lower rim portion 19 of the electric vehicle unibody. The peripheral support surface 17 extends in an outwards direction from the REESS 1 such that a larger surface for receiving the lower rim portion 19 is achieved. As such, the REESS 1 has a larger area for supporting the unibody 2. The peripheral support surface 17 may further be outfitted with means for fixedly attaching the unibody 2 to the REESS 1, such as holes for bolts, screws or rivets.
The REESS further comprises a bump 20 adapted to support a rear seat along a longitudinal direction of the vehicle. As such, the bump 20 is adapted to absorb momentum of a rear seat in case of rapid deceleration, such as a crash. Thus, the bump 20 is adapted to prevent serious injury to any passenger sitting in a rear seat anchored to the bump 20 in case of a crash.
Fig. 2 is a schematic perspective view of a REESS displaying two passenger seats 37 adapted to be mounted to the REESS. The passenger seat 37 comprises a fastening bracket 38 adapted be arranged on a mounting rail 13 such that the seat 37 is mounted to the REESS. As such, the fastening bracket 38 has a shape complementary to the mounting rail 13. The fastening bracket 38 is further adapted to receive any means of fastening the fastening bracket 38 to the rail 13, such as a bolt and a nut (not shown), a screw (not shown) or a rivet (not shown).
Fig. 3 is a schematic perspective view of the REESS 1 when arranged against and attached to the vehicle unibody 2 such that the REESS 1 and the unibody 2 together consitute an electric vehicle chassis 3. As such, the electric vehicle chassis 3 has been assembled through a method of assembling an electric vehicle chassis according to the third aspect of the present invention. As such, the electric vehicle chassis 3 has been assembled by: mounting the rechargeable electric energy storage system 1 (REESS) to the electric vehicle unibody 2 such that a first and a second lateral side 8 portion 4, 5 of the REESS 1 constitutes at least a part of a respective first and second rocker 23, 25 of the electric vehicle chassis 3, a lower side 7 of the REESS 1 constitutes an underside 27 of the electric vehicle chassis 3, and an upper side 9 of the REESS 1 constitutes a floor 29 of a passenger cabin 31 of the electric vehicle chassis 3, thus producing an electric vehicle chassis 3. As such, the upper side 9 of the REESS 1 adapted to function as the 29 floor of the vehicle such that any component that is adapted to be attached to or anchored to a floor of a vehicle cabin may be attached to or anchored to the upper side 9. ln some embodiments of the third aspect, arranging at least one load on at least one mounting means 11 arranged on the upper side 9 of the REESS 1 is performed before mounting the REESS 1 to the electric vehicle unibody 2, such that any load arranged on a mounting means 11, such as a car seat 37 on a mounting rail 13, is attached to the upper side 9 of REESS before the upper side 9 constitutes a floor 29 of the passenger cabin 31.
Thus, the REESS 1 in itself constitutes a load bearing member of the vehicle chassis 3.
Fig. 4 is a cross-sectional view of the chassis 3. Here, an interior cavity 33 of the REESS 1 is visible. The interior cavity 33 is adapted to receive one or more battery pack (not shown). Here, two adjacent interior cavities 33 are separated by a structural beam 35. The structural beam 35 is preferably made of a resilient material, such as steel. The structural beam 35 may extend along the entire width of the REESS 1, i.e. from one lateral side portion 4 to the other lateral side portion 5. Alternatively, the structural beam 35 may be discontinuous such any two adjacent interior cavities 33 are fluidly connected to each other. Here, it is visible that the bump 20 defines a cavity 21 in which e.g. electronics related to the function of the REESS 1 may be arranged.
Fig. 5 is a cross-sectional view of a rocker 23. Here, it is visible how the lower rim portion 19 of the unibody 2 is arranged on the peripheral support surface 17 of the REESS 1. The lateral side portion 4 of the REESS thus constitute a load bearing member of the rocker 23. Here, the lateral side 9 portion 4 is covered by an aesthetic cover 37. The aesthetic cover 37 may e.g. be a plastic cover.
The person skilled in the art realizes that the present invention by no means is limited to the embodiments described above. The features of the described embodiments may be combined in different ways, and many modifications and variations are possible within the scope of the appended claims. ln the claims, any reference signs placed between parentheses shall not be construed as Iimiting the claim. The word "comprising" does not exclude the presence of other elements or steps than those listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

Claims (15)

1. A rechargeable electric energy storage system (REESS) adapted to be arranged against and attached to an electric vehicle unibody, so as to constitute an electric vehicle chassis, wherein the REESS is configured such that: a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the electric vehicle chassis; a lower side of the REESS constitutes an underside of the electric vehicle chassis; and an upper side of the REESS constitutes a floor of a passenger cabin of the electric vehicle chassis, such that the REESS in itself constitutes a load bearing member of the electric vehicle chassis.
2. A rechargeable electric energy storage system (REESS) according to claim 1, wherein the REESS further comprises at least one mounting means arranged on the upper side of the REESS, the at least one mounting means being adapted to receive a load.
3. A rechargeable electric energy storage system (REESS) according to claim 1, wherein at least one mounting means is a mounting rail adapted to receive a passenger seat, such that the passenger seat constitutes a load to be supported by the REESS.
4. A rechargeable electric energy storage system (REESS) according to claim 1, 2 or 3, wherein at least one mounting means is a seatbelt anchor adapted to receive a seatbelt buckle, such that the seatbelt anchor constitutes a load to be supported by the REESS.
5. A rechargeable electric energy storage system (REESS) according to any preceding claim, wherein said lateral side portion further comprises a peripheral support surface adapted to be arranged against a lower rim portion of the electric vehicle unibody.
6. An electric vehicle comprising an electric vehicle unibody and a rechargeable electric energy storage system (REESS) according to claim 1, wherein the REESS is arranged such that: a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the electric vehicle; a lower side of the REESS constitutes an underside of the electric vehicle; an upper side of the REESS constitutes a floor of a passenger cabin of the electric vehicle, such that the REESS in itself constitutes a load bearing member of the vehicle chassis.
7. An electric vehicle according to claim 6, wherein the REESS further comprises at least one mounting means arranged on the upper side of the REESS, the at least one mounting means being adapted to receive a load.
8. An electric vehicle according to claim 6 or 7, wherein the REESS further comprises at least one seatbelt anchor arranged on the upper side of the REESS, the at least one seatbelt anchor being adapted to receive a seatbelt buckle.
9. An electric vehicle according to any one of claims 6, 7 or 8, wherein the REESS further comprises a peripheral support surface adapted to be arranged against a lower rim portion of the electric vehicle unibody.
10. An electric vehicle according to any one of claims 6, 7, 8 or 9, further comprising a passenger seat comprising at least one fastening bracket with a shape complementary to the mounting means of the REESS such that the fastening bracket is adapted to be arranged on the mounting means of the REESS.
11.A method of assembling an electric vehicle chassis, the method comprising:mounting a rechargeable electric energy storage system (REESS) according to claim 1 to an electric vehicle unibody such that a first and a second lateral side portion of the REESS constitutes at least a part of a respective first and second rocker of the electric vehicle chassis; a lower side of the REESS constitutes an underside of the electric vehicle chassis; an upper side of the REESS constitutes a floor of a passenger cabin of the electric vehicle chassis, thus producing an electric vehicle chassis.
12. Method according to claim 10, further comprising arranging at least one load on at least one mounting means arranged on the upper side of the REESS, wherein arranging at least one load is performed before mounting the REESS to the electric vehicle unibody.
13. Method according to claim 11, wherein arranging at least one load comprises arranging a passenger seat on at least one mounting rail arranged on the upper side of the REESS.
14. Method according to any one of claims 11 or 12, wherein arranging at least one load comprises arranging a seatbelt buckle on at least one seatbelt anchor arranged on the upper side of the REESS.
15. Method according to any one of claims 11-13, wherein mounting the REESS to the electric vehicle unibody further comprises arranging a peripheral support surface of the REESS against a lower rim portion of the electric vehicle unibody.
SE2150957A 2021-07-16 2021-07-16 Structural Rechargeable Electric Energy Storage System SE2150957A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2150957A SE2150957A1 (en) 2021-07-16 2021-07-16 Structural Rechargeable Electric Energy Storage System
PCT/SE2022/050695 WO2023287341A1 (en) 2021-07-16 2022-07-07 Structural rechargable electric storage system

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Publications (1)

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DE102021130028A1 (en) * 2021-11-17 2023-05-17 Bayerische Motoren Werke Aktiengesellschaft Floor system for a motor vehicle

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US20190009661A1 (en) * 2017-07-10 2019-01-10 Subaru Corporation Automobile vehicle
US20190210659A1 (en) * 2018-01-08 2019-07-11 Hyundai Motor Company Side vehicle body reinforcing structure
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