SE545626C2 - A chassis and a vehicle provided with such a chassis - Google Patents
A chassis and a vehicle provided with such a chassisInfo
- Publication number
- SE545626C2 SE545626C2 SE2050631A SE2050631A SE545626C2 SE 545626 C2 SE545626 C2 SE 545626C2 SE 2050631 A SE2050631 A SE 2050631A SE 2050631 A SE2050631 A SE 2050631A SE 545626 C2 SE545626 C2 SE 545626C2
- Authority
- SE
- Sweden
- Prior art keywords
- chassis
- heat
- vehicle
- electric
- underbody
- Prior art date
Links
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 239000012809 cooling fluid Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 8
- 239000004020 conductor Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001092 metal group alloy Inorganic materials 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/10—Cooling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
A chassis comprising a flat underbody (1) covering at least part of the chassis, and at least a part of an electric vehicle power management system, comprising at least one heat-generating electric component (3). The heat-generating electric component (3) is arranged in thermal connection with and electric isolation from the flat underbody (1).
Description
TECHNICAL FIELD
The present invention relates to a chassis comprising a flat underbody covering at least part of the chassis, and at least a part of an electric vehicle power management system, comprising at
least one heat-generating electric component.
BACKGROUND
Vehicle chassis may comprise a flat underbody provided mainly for the purpose of improving the aerodynamic drag of the vehicle and for protecting vehicle components from dirt and and particles from below. The underbody therefore covers a substantial part of
the chassis and has a relatively large surface area.
Modern vehicles, especially those using electric motors for their propulsion, carries an electric vehicle power management system which has a substantial voltage, for example 400-1000 volt. The cooling needs of such vehicles are normally heavily reduced compared to those of vehcicles using a conventional internal combustion engine. Yet there are components, such as bus bars used during charging of the batteries of such vehicles, that occasionally will generate high amounts of heat and will therefore
require cooling.
Traditionally, vehicles are provided with a front-mounted radiator
which provides for the cooling of vehicle and its components.
However, front-mounted radiators has a negative impact on the
aerodynamic drag of the vehicle.
lt is an object of the present invention to present a chassis which has a cooling arrangement that reduces the need of a front- mounted radiator, thereby
contributing to an improved
aerodynamic drag of the vehicle.
SUMMARY
The object of the invention is achieved by means of a chassis comprising
- a flat underbody covering at least part of the chassis, and
- at least a part of an electric vehicle power management system, comprising at least one heat-generating electric component,
said chassis being characterized in that the heat-generating electric component is arranged in thermal connection with and
electric isolation from the flat underbody.
The heat-generating component generates heat when conducting
an electric current.
According to one embodiment, the part of the electric vehicle power management system that is comprised by the chassis may comprise any of an electric motor for the propulsion of the vehicle, a system for storing electric energy, and connection means for connecting the system for storing electric energy to an electric
DOWGF SOUFCG.
The underbody, which has a large surface subjected to wind during propulsion of the chassis, will thus act as a radiator through which the heat of the heat-generating electric component is transferred to the surrounding atmosphere. The underbody may comprise a sheet-shaped body. The invention does not exclude that the chassis comprises a front-mounted radiator, but will reduce the need thereof. lf a front-mounted radiator is still used, it may be made smaller and have a less negative impact on the aerodynamic drag.
According to one embodiment, the heat-generating electric component is in physical contact with the flat underbody. The thermal connection thus comprises a conduction transfer of heat
through solid material.
According to one embodiment, the flat underbody comprises an electrically conducting material and the heat-generating electric component is thermally connected to the flat underbody via an electric isolator.
if: *xrfï=“r°íí:*:*:f:rft. 1:. jj_“_š_~_g_tg;-r_=____heat-generating electric component comprises a bus bar.
f: ii: rm f^:r^:r?':-xfšfffmt ïiff bar extends along the
flat underbody, on an upper side of the flat underbody. ïi-'x ~'::“:::. :frittf^:~'iFr^f^f~'::wâ. ïfšlhe flat underbody comprises at least one internal channel which is connected to a cooling fluid circuit, preferably a cooling liquid circuit, provided in the chassis.
The cooling fluid circuit may be part of a heating and cooling
system of the vehicle, configured to regulate the temperature of individual components and parts of the vehicle such as electrical components and spaces such as a cabin. The heat-generating electric component may be in thermal connection with the flat underbody via such a cooling circuit. The thermal connection between the heat-generating electric component and the underbody thereby also comprises convective heat transfer via the liquid. The heat-generating electric component may both be in physical contact with the flat underbody and be cooled via said
heating and cooling system.
According to one embodiment, the flat underbody comprises a plurality of internal channels which are connected to a cooling fluid
circuit, preferably a cooling liquid circuit.
According to one embodiment, the at least one internal channel mainly extends in a longitudinal direction the chassis. lt may
however, as an alternative, extend mainly in other directions.
According to one embodiment, the metallic material of the flat
underbody comprises an aluminium alloy. Alternative embodiments include underbodies made of other metal alloys or polymers or compound materials comprising different metal alloys,
different polymers or combinations of polymers and metal alloys
According to one embodiment, a metallic material of the bus bar comprises a copper alloy. Alternative conducting materials, such
as aluminium alloys, are also conceivable.
According to one embodiment, said part of an electric vehicle
power management system has a voltage of 400-1000 volt.
The object of the invention is also achieved by means of a vehicle, characterized in that it comprises
- a chassis as defined hereinabove, and
-an electric motor for the propulsion of the vehicle, and
- a system for storing electric energy used by the electric motor for
said propulsion, and that the ^===n=~=~~f n: heat-
generating electric component fr:r^f'f;'::“í::::::;:: Fixat Ittf* is configured to conduct electric energy to said system in connection to a
charging operation.
According to one embodiment, the vehicle comprises a heat pipe and the heat pipe is configured to conduct heat from a heat generator provided in the vehicle towards an upper side of the flat underbody. Said heat generator may comprise the heat-generating
electric component.
BRIEF DESCRIPTION OF THE DRAWING
Fig. 1 is a side view of a vehicle with a chassis according to an
exemplifying embodiment of the present invention,
Fig. 2 is a cross-section according to A-A in fig. 1,
Fig. 3 is a view from above of a part of the chassis of the vehicle
shown in fig. 1, and
Fig. 4 is a further view of the vehicle showing further components
comprised by the vehicle.
DETAILED DESCRIPTION
Fig. 1-4 show a vehicle or part of a vehicle according to the present invention. The vehicle comprises a chassis comprising a flat underbody 1 covering at least part of the chassis, and an electric vehicle power management system, comprising at least one heat- generating electric component 3. The heat-generating electric component 3 is arranged in thermal connection with and in electric isolation from the flat underbody 1. The electric vehicle power
management system has a voltage of 400-1000 volt.
The electric power management system of the vehicle further comprises an electric motor 4 (see fig. 4) for the propulsion of the vehicle, and a system 5 for storing electric energy used by the electric motor 4 for said propulsion. The heat-generating electric component 3 comprises a bus bar and is configured to conduct electric energy to said system 5 in connection to a charging operation. The bus bar 3 extends along the flat underbody 1, on an upper side 10 of the flat underbody 1. ln the embodiment
shown, the bus bar 3 comprises a copper alloy.
The heat-generating electric component 3 is in physical contact with the flat underbody 1. ln the embodiment shown, the flat underbody 1 comprises an electrically conducting material, here an aluminium alloy, and the heat-generating electric component 3 is thermally connected to the flat underbody 1 via an electric
isolator 6, According to one embodiment, the part of the electric
vehicle power management system that is comprised by the chassis may comprise any of an electric motor for the propulsion of the vehicle, a system for storing electric energy, and connection means for connecting the system for storing electric energy to an
electric power source.
The flat underbody 1 comprises a plurality of internal channels 7 which are connected to a cooling liquid circuit (not shown) provided in the vehicle. The cooling liquid circuit may be part of a heating and cooling system of the vehicle, configured to regulate the temperature of individual components and parts of the vehicle
such as electrical components and spaces such as a cabin.
The internal channels 7 mainly extend in a longitudinal direction of the chassis.
According to one embodiment, the vehicle comprises a heat pipe 8 and the heat pipe is configured to conduct heat from a heat generator 9 provided in the vehicle towards an upper side of the flat underbody. The heat generator 9 could be any component of
the chassis or vehicle generating heat.
Claims (8)
1. A chassis comprising - a flat underbody (1) covering at least part of the chassis, and - at least a part of an electric vehicle power management system, comprising at least one heat-generating electric component (3), said chassis being characterized in that the heat-generating electric component (3) is arranged in thermal connection with and in electric isolation from the flat underbody (1), wherein the heat- generating electric component (3) comprises a bus bar, where the bus bar extends along the flat underbody (1), on an upper side of the flat underbody (1), comprises at least one internal channel (7) which is connected to and wherein the flat underbody (1) a cooling fluid circuit, preferably a cooling liquid circuit, provided in the chassis.
2. A chassis according to claim 1, characterized in that the flat underbody (1) comprises a plurality of internal channels (7) which are connected to a cooling fluid circuit, preferably a cooling liquid circuit.
3. A chassis according to to any one of claims 1-2, characterized in that the at least one internal channel (7) mainly extends in a longitudinal direction (ggïjlthe chassis.
4. A chassis according to any one of claims 1-3, characterized in that š»š<:><\_>»_§3;____metallic material of the flat underbody (1) comprises an aluminium alloy.
5. A chassis according to any one of claims 1-4, characterized in that gggwmetallic material of the bus bar comprises a copper alloy.
6. A chassis according to any one of claims 1-5, characterized in that said part of an electric vehicle power management system has a voltage of 400-1000 volt.
7. A vehicle, characterized in that it comprises - a chassis according to any one of claims 1-6, and -an electric motor (4) for the propulsion of the vehicle, and - a system (5) for storing electric energy used by the electric motor for said propulsion, and that the bus bar comprised in the heat- generating component (3) is configured to conduct electric energy to said system (5) in connection to a charging operation.
8. A vehicle according to claim 7, characterized in that the vehicle comprises a heat pipe (8) and that the heat pipe is configured to conduct heat from a heat generator (9) provided in the vehicle towards an upper side of the flat underbody (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2050631A SE545626C2 (en) | 2020-06-02 | 2020-06-02 | A chassis and a vehicle provided with such a chassis |
| DE102021112928.1A DE102021112928A1 (en) | 2020-06-02 | 2021-05-19 | Chassis and vehicle provided with such a chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2050631A SE545626C2 (en) | 2020-06-02 | 2020-06-02 | A chassis and a vehicle provided with such a chassis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2050631A1 SE2050631A1 (en) | 2021-12-03 |
| SE545626C2 true SE545626C2 (en) | 2023-11-14 |
Family
ID=78509350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2050631A SE545626C2 (en) | 2020-06-02 | 2020-06-02 | A chassis and a vehicle provided with such a chassis |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102021112928A1 (en) |
| SE (1) | SE545626C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11752830B1 (en) | 2022-09-08 | 2023-09-12 | Aptera Motors Corp. | Aerodynamic heat exchanger for a vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05208617A (en) * | 1992-01-31 | 1993-08-20 | Tokyo R & D:Kk | Electric vehicle |
| US20040119276A1 (en) * | 2000-12-21 | 2004-06-24 | Claude Fior | Vehicle chassis with sandwich central platform front and rear tubular frameworks and linear dampers fixed to the frameworks |
| US20130153317A1 (en) * | 2010-12-22 | 2013-06-20 | Tesla Motors, Inc. | Vehicle Battery Pack Thermal Barrier |
| JP2013180741A (en) * | 2012-03-05 | 2013-09-12 | Ntn Corp | Underguard for vehicle and cooling structure of electric vehicle having the same |
| US20180261992A1 (en) * | 2017-03-08 | 2018-09-13 | Paragon Space Development Corporation | Systems and methods for integrating a busbar and coldplate for battery cooling |
| WO2019182117A1 (en) * | 2018-03-23 | 2019-09-26 | 藤森工業株式会社 | Busbar, battery pack, and electrical device |
-
2020
- 2020-06-02 SE SE2050631A patent/SE545626C2/en unknown
-
2021
- 2021-05-19 DE DE102021112928.1A patent/DE102021112928A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05208617A (en) * | 1992-01-31 | 1993-08-20 | Tokyo R & D:Kk | Electric vehicle |
| US20040119276A1 (en) * | 2000-12-21 | 2004-06-24 | Claude Fior | Vehicle chassis with sandwich central platform front and rear tubular frameworks and linear dampers fixed to the frameworks |
| US20130153317A1 (en) * | 2010-12-22 | 2013-06-20 | Tesla Motors, Inc. | Vehicle Battery Pack Thermal Barrier |
| JP2013180741A (en) * | 2012-03-05 | 2013-09-12 | Ntn Corp | Underguard for vehicle and cooling structure of electric vehicle having the same |
| US20180261992A1 (en) * | 2017-03-08 | 2018-09-13 | Paragon Space Development Corporation | Systems and methods for integrating a busbar and coldplate for battery cooling |
| WO2019182117A1 (en) * | 2018-03-23 | 2019-09-26 | 藤森工業株式会社 | Busbar, battery pack, and electrical device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021112928A1 (en) | 2021-12-02 |
| SE2050631A1 (en) | 2021-12-03 |
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