CN115743315A - Roof module with cooling device - Google Patents
Roof module with cooling device Download PDFInfo
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- CN115743315A CN115743315A CN202211069050.6A CN202211069050A CN115743315A CN 115743315 A CN115743315 A CN 115743315A CN 202211069050 A CN202211069050 A CN 202211069050A CN 115743315 A CN115743315 A CN 115743315A
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- Prior art keywords
- roof module
- cooling
- roof
- heat
- cooling channel
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- 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
- B62D25/06—Fixed roofs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00557—Details of ducts or cables
- B60H1/00564—Details of ducts or cables of air ducts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2225—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
- B60H1/241—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle
- B60H1/245—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle located in the roof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H2001/2268—Constructional features
- B60H2001/2293—Integration into other parts of a vehicle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a roof module for forming a roof on a motor vehicle, comprising: a surface element which at least regionally forms a roof skin of the vehicle roof, which serves as an outer sealing surface; a roof module frame on which the face member is disposed; at least one electrical and/or electronic component; and a cooling device by which waste heat discharged from the electronic component and/or heat introduced from the outside can be led out. The cooling device comprises at least one cooling channel and is arranged as a one-piece or multi-piece structural unit in an edge region of the roof module; or the at least one cooling channel is defined by a hollow channel which is arranged in an edge region of the roof module and is bounded by the roof module frame and the face component.
Description
Technical Field
The invention relates to a roof module for forming a roof on a motor vehicle.
Background
Roof modules of this type are widely used in vehicle construction. For example, the roof module may be prefabricated as a separate functional module and connected with the roof frame structure (which is part of the vehicle body structure) on the assembly line. The roof module forms, at least in regions, a roof skin of the vehicle roof, which prevents the ingress of moisture or air currents into the vehicle interior. The roof skin consists of one or more surface elements, which can be made of a stable material, for example a painted sheet or a painted or colored plastic. The roof module may be part of a rigid roof or part of an openable roof assembly.
Furthermore, developments in vehicle manufacturing are increasingly directed to autonomously or semi-autonomously driven motor vehicles. In order to be able to implement an autonomous or semi-autonomous control of the motor vehicle by the vehicle control device, a large number of environmental sensors (e.g. lidar sensors, radar sensors, (multi-) cameras, etc., as well as other (electrical) components, which are integrated, for example, into the roof module, detect the environment around the motor vehicle, and, for example, determine the corresponding traffic situation from the detected environmental data.
In order to achieve the best possible and reliable mode of operation, safety and availability of autonomous or semi-autonomous driving modes, the most uninterrupted or continuous availability of environmental sensors and other (electrical) components is required. A problem which is present and which can lead to (temporary) failure of the environmental sensor is, for example, heat build-up around the environmental sensor, which can overheat and thus fail as a result of this heat build-up. Such heat buildup can be caused not only by the self-waste heat of the environmental sensor resulting from operation but also, alternatively or additionally, by hot external climates (e.g. hot summer hours, i.e. ambient heat) and can lead to overheating (e.g. overheating of only a single electronic component of the environmental sensor). The hot exterior climate and the intense solar radiation can lead to an intense heating of the entire roof skin (in particular due to the exposure of the environmental sensors to the upper side of the roof skin).
Therefore, in order to avoid this problem due to heat, it is desirable to avoid heat accumulation that may occur by employing a cooling device. The advantages of using such cooling devices are known in principle, but they are not yet fully used in modern roof modules for autonomous or semi-autonomous driving operation, so that at the present time, at least in part, no assurance of uninterrupted availability of the environmental sensor by effective removal of heat from the environmental sensor, the antenna and other electronic components has been achieved.
Some cooling device solutions provide an air inlet (for example in the form of a cooling grid) arranged externally on the roof skin and a cooling fan arranged partially or even externally on the roof skin. Although the air flow required for cooling the electrical components of the roof module is provided in principle by these externally situated cooling ribs and/or cooling fans, this arrangement can lead to foreign particles and dirt being able to easily penetrate into the ventilation space and, for example, to the impairment of the cooling power. Furthermore, the known cooling devices or air conditioning solutions for roof modules basically require a large number of additional components which have to be assembled and maintained, thereby increasing the assembly and maintenance related costs. Furthermore, the existing solutions require in principle a large installation space, which is however a scarce resource in the automotive field. If there is not sufficient installation space, the cooling device is also at least partially displaced in known cooling solutions into one or more accessories on the roof module. This is in conflict with the desired visual appearance of the roof module on the one hand, and on the other hand this solution leads to disadvantages in terms of the desired robustness when designing the components of the roof module and often makes the provision of the required sealing and (for example, fan) dirt resistance of the roof module difficult. Furthermore, drainage concepts are always required in existing solutions, but they often have to be designed in a complex way.
Disclosure of Invention
The above-mentioned disadvantages are to be eliminated or reduced by the integrated, space-optimized, production-and assembly-optimized solution according to the invention.
The object of the present invention is therefore to provide a roof module which reduces the above-mentioned disadvantages of the prior art already disclosed.
This object is achieved by a roof module according to the teachings of the preferred embodiment.
Advantageous embodiments of the invention are the subject of alternative embodiments.
According to the invention, a roof module for forming a roof on a motor vehicle is proposed. The roof module comprises a surface element which at least in regions forms a roof skin of the vehicle roof, which serves as an outer sealing surface. Further, the roof module includes: a roof module frame on which the face member is disposed; and at least one electrical and/or electronic component. The roof module furthermore comprises a cooling device, by means of which waste heat which is discharged from the electronic components and/or heat which is introduced from the outside can be dissipated. The roof module is characterized in that the cooling device comprises at least one cooling channel and is arranged as a one-piece or multi-piece structural unit (or as a built-in component) in the edge region of the roof module; or the at least one cooling channel is defined by a hollow channel which is arranged in an edge region of the roof module and is bounded by the roof module frame and the face component.
The at least one cooling channel is preferably designed such that a cooling fluid flow for cooling the at least one electronic component can flow through the cooling channel. That is, the at least one cooling channel preferably has no holes or other openings, as viewed in its longitudinal direction, but is constructed as a tubular, preferably one-piece, channel. For this purpose, the roof module frame and the surface component are preferably each produced as a planar, continuous and preferably one-piece element. The cooling fluid flow may preferably be a cooling air flow. However, other cooling media are also conceivable in principle. The at least one cooling channel can preferably be arranged as a structural unit to be assembled in a hollow channel which is formed in the edge region between the roof module space and the surface member.
The thermal management concept of the present invention is expected to be fully employed, especially in future (semi-) autonomously driven vehicles. To this end, the cooling device of the invention is provided in particular for dissipating heat from environmental sensors and other electrical or electronic components. Particularly preferably, the Roof Module is a Roof Sensor Module (in English: roof Sensor Module). The solution of the invention also makes it possible to preferably provide fewer air inlets and/or outlets (if required) and they can also be positioned optimally (along the edge regions), thereby improving the styling and the visual appearance of the roof module.
In an alternative embodiment of the invention, it is provided that the cooling device is designed such that one or more air cooling channels required for thermal management can be inserted into the roof module particularly preferably as a structural unit. Such a structural unit can be implemented very compactly, can be prefabricated simply and cost-effectively, and is particularly easy to assemble, since for assembly, for example, it is only necessary to place and optionally fix the structural unit in the edge region between the roof module space and the surface member at once. It is also possible, for example, to simply replace such a structural unit in the event of a fault, since such a structural unit is replaceable. Moreover, the maintainability and accessibility of the cooling device of the invention is simplified. The cooling device according to the invention can preferably be arranged as a structural unit on the roof module frame before it is connected to the surface element. The cooling device thus forms a component of the roof module integrated between the roof module space and the surface member. The roof module can preferably be mounted as a single structural unit on the vehicle body roof frame. Furthermore, it is particularly preferably possible to provide fastening devices and/or connecting devices for further components (for example, wiring harnesses, lines for cleaning liquids, lines for compressed air, compressed air tanks, valves/distributors, pumps, control devices, electronic components, sensor modules, antennas, etc.) on the at least one cooling channel embodied as a structural unit, in order thereby to simplify the assembly or installation of the relevant components. The cooling device according to the invention is particularly preferably designed in one piece and can thus be arranged as a single structural unit in the edge region of the roof module. Alternatively, the cooling device can also consist of two or more component parts, for example, which can be joined together as a component type. Moreover, assembly is simplified by such a component having only a few components.
In an alternative embodiment of the invention, the at least one cooling channel is defined by a hollow channel which is arranged in the edge region of the roof module and is delimited by the roof module frame and the surface member. The cooling channel is preferably an integral part of the roof module. The at least one cooling channel is preferably designed as a tubular hollow space, the wall of which is formed by the roof module frame and the surface member. The at least one cooling channel preferably comprises a closed tubular cross-section. The cooling duct therefore does not have to be inserted as a separate assembly component and also as a structural unit into the roof module. This is particularly advantageous if, in the structural region of the edge between the roof module frame and the surface member, there is a cavity or hollow channel which can be used as the at least one cooling channel. This structural shape of the hollow channel, which is predefined by the roof module frame and the surface element, can thus be used as part of a cooling device for the thermal management of the at least one electronic component (e.g. environmental sensors, antennas and/or other electronic components of the roof module). The hollow channel is preferably formed by joining the roof module frame and the face member together by manufacturing techniques (e.g., bonding, screwing, riveting, brazing, and/or welding). The roof module frame and the face component are preferably connected to one another continuously and preferably without interruption, so that a continuous hollow channel is formed thereby, which may define the at least one cooling channel or in which the at least one cooling channel may preferably be arranged as a structural unit. Thus, the design features of the roof module can be effectively used in conjunction with thermal management of the at least one electronic component. This is advantageous because by using the at least one hollow channel as part of the cooling device, fewer additional components (e.g. further cooling channels, etc.) are required, which not only results in material savings, but also in production time savings and weight savings. Thereby, a very compact design, size and arrangement of the cooling device may be achieved.
According to the invention, the at least one cooling channel can be arranged either as a separate structural unit, preferably as a separate structural unit, between the roof module frame and the face component or directly formed by a hollow channel which is present between the roof module frame and the face component as a result of a predetermined shaping. The cooling device of the invention has the advantages that: the arrangement between the edge regions of the roof module optimizes the construction space. In particular in the case of roof modules comprising transparent roof windows, the arrangement of the cooling device in the edge region has great advantages, since the roof window opening is not influenced by the installation space of the cooling device and can preferably be dimensioned up to adjacent to the edge region. This makes it possible, for example, to form a panoramic roof. With the solution according to the invention, it is possible in particular to discharge the waste heat of a plurality of electronic components mounted in the roof module along the edge contour through a common cooling channel which follows the edge contour in terms of shape. In this way, it is possible, for example, to use only one cooling channel which extends along the entire edge contour of the roof module to guide all electrical and/or electronic components of the roof module together. This saves components compared to known solutions and also significantly improves the assembly of the cooling device. In particular, the invention allows a simple production of a preferably integrated cooling channel, a simple assembly of the cooling channel as a complete assembly or structural unit (which preferably comprises fixing means for preassembling further components) and thus a simple integration of the cooling device in only one working process of the production line.
The electronic or electrical component may be a component that interacts with an environmental sensor of the roof module. Alternatively or additionally, it is also possible for only components which are physically located in the vicinity of the structure of the environmental sensor (i.e. in the adjoining structural space) and which are heated, as it were, approximately passively by the waste heat of said components. Thus, the environmental sensor can be effectively prevented from being heated by surrounding components. This ensures a thermally stable operation of the environmental sensor. In principle, the at least one electronic component can also be a computing unit and/or an evaluation unit and/or an antenna (or an antenna module) and/or a light source (for example a light module) and/or other electronic devices that generate waste heat.
By "at least one" it is understood that the roof module may comprise one or more relevant components. The ambient heat conducted from the outside can be, for example, waste heat of other electrical and/or electronic components installed in the roof module. The "cooling device" may comprise, in addition to the at least one cooling channel, further cooling components, in particular further cooling channels, a cooling air inlet and/or a cooling air outlet, which together form the cooling device. The cooling device is provided overall for cooling or tempering one or more electrical and/or electronic and/or mechanical and/or electromechanical components arranged in the roof module (depending on the environmental conditions, this may also mean heating of the components if appropriate). The cooling device here comprises all components which directly or indirectly influence the temperature control of the roof module.
The cooling duct according to the invention preferably has a shape or profile extending in the longitudinal direction of the cooling duct, which is adapted to or imitates the edge region of the roof frame and/or the surface element or is formed by these. In the simplest case, the at least one cooling channel can be oriented linearly and substantially (i.e. ± 10%) parallel to the vehicle longitudinal direction. Alternatively, the cooling channel can also have an L-shaped length profile. It is also possible for the cooling channels to be formed along the entire edge region and to comprise, for example, a rectangular length (optionally with rounded corners in each case).
The roof module according to the invention can form a structural unit in which the means for autonomously or semi-autonomously supporting driving by means of a driving assistance system are integrated and which can be placed as a unit by the vehicle manufacturer on the body shell of the vehicle, for example on the roof frame structure formed by the cross members and the longitudinal members. The longitudinal beams extend substantially in the longitudinal direction of the vehicle. The transverse member preferably extends in the vehicle width direction of the vehicle, i.e. transversely, preferably perpendicularly and substantially horizontally, to the direction of travel of the vehicle.
Preferably, the roof module is connected, for example glued, screwed and/or bolted, to the roof frame structure of the vehicle via the roof module frame. Furthermore, the roof module according to the invention can be designed as a purely fixed roof or also as a roof with a roof opening system. The roof module can be placed on or into a roof frame structure, which is part of the vehicle body. The roof module can be designed for use in a passenger or commercial vehicle. The roof module can preferably be provided as a structural unit in the form of a Roof Sensor Module (RSM), in which environmental sensors and other electrical components for (semi-) autonomous driving are arranged.
It is also contemplated that the roof module includes one or more antenna modules and/or other electrical components. It is also possible that the roof module comprises one or more environmental sensors and/or one or more antenna modules and/or other electrical or electronic components, wherein at least one selected component (described above) can be cooled by the cooling device according to the invention.
In a preferred embodiment, the roof module frame is formed by at least one transverse beam and at least two longitudinal beams. The at least one cross member and the at least two longitudinal members define the edge region. The edge region is preferably defined in its width by the width of the at least one transverse member and the respective width of the at least two longitudinal members. The longitudinal member preferably extends substantially (i.e. + -. 10%) in the longitudinal direction of the vehicle. The transverse member preferably extends in the vehicle width direction of the vehicle, i.e. transversely, preferably perpendicularly and substantially horizontally, to the direction of travel of the vehicle. The at least one transverse member may preferably be configured as a shell-shaped sheet metal part. The cross member can preferably have at least two wall sections extending obliquely (preferably perpendicularly) to one another. The cross beam may form an L or S shape in its cross section (extending perpendicular to its longitudinal direction), wherein the two leg lengths define the respective heights of the respective wall sections. The longitudinal beams can preferably each have at least two wall sections extending at an angle to one another (preferably perpendicularly). The longitudinal beams may form an L or S shape in their respective cross section (respectively extending perpendicular to their longitudinal direction), wherein the respective two leg lengths define the respective height of the respective wall section. The roof module frame can preferably be designed as a reinforced housing component. Furthermore, the roof module frame can also be constructed in one type and be made, for example, of a metal material, preferably a metal sheet. The surface element can preferably have at least in sections at least two wall sections extending obliquely (preferably perpendicularly) to one another. The face member may form an L, S or U-shaped cross section (respectively extending perpendicular to its longitudinal direction) in this region, wherein the two leg lengths define the respective heights of the respective wall sections.
In a preferred embodiment, the at least one cooling channel is formed circumferentially on the roof module frame. In this embodiment, the at least one cooling channel is preferably formed in one piece and circumferentially around the entire roof module frame. The at least one cooling channel is preferably arranged along the entire edge region or is formed by a hollow channel extending along the entire edge region. This embodiment is advantageous because the entire edge region can preferably be provided for the cooling channel and thus heat dissipation can be achieved around the roof module or the roof module frame. This is advantageous in particular for roof sensor modules for (semi-) autonomous driving, since in such roof modules a plurality of electrical and/or electronic components for detecting the vehicle surroundings are provided along the entire edge region of the roof module. For this reason, the edge region is particularly suitable for this arrangement because of its exposed position. By providing cooling means in this edge region, the waste heat generated and/or the ambient heat can be dissipated efficiently and preferably in the immediate vicinity of the respective generation location. Alternatively, it is preferred that the at least one cooling channel is formed such that it is arranged at least in a section of the edge region or at least in a section of the edge region forms a hollow channel, by means of which the at least one cooling channel is defined. This is advantageous, for example, if only a part of the edge region can be used for arranging electrical and/or electronic components for a particular vehicle and thus only heat dissipation in this part of the edge region is required.
In a preferred embodiment, the at least one cooling channel is formed from at least two different materials. The cooling channel is preferably not designed as a tube of homogeneous material, but rather as a tube of two different materials. This is advantageous in particular with regard to heat dissipation, since, depending on the composition of the material, a heat conduction direction can be defined which follows along the course of the cooling channel in the direction of the steepest gradient of the heat conductivity distribution. Preferably, at least one underside (directed in the direction of the vehicle interior) of the at least one cooling duct is made of a metal material, for example aluminum or a metal alloy, and preferably of a metal sheet (for example a stamped metal sheet or a deep-drawn metal sheet). In contrast, the upper side (directed away from the vehicle interior) of the at least one cooling channel is preferably made of plastic and is preferably (in particular irreversibly) fixedly connected to the lower side of the air cooling channel in a moisture-tight manner.
In a preferred embodiment, the at least one cooling channel is composed of two half-shells, wherein a first of the two half-shells is made of plastic and a second of the two half-shells is made of a metallic material, preferably a metal sheet. This configuration is particularly advantageous if the at least one cooling channel is defined by a hollow channel formed in the edge region between the roof module frame and the face member. That is, the roof module frame is often made of a metal material or formed as a punched or deep drawn metal plate due to stiffness and strength requirements, whereas the face member is often made of a plastic, which may for example be (partially) transparent or coloured. In this way, the cooling channel is composed of two materials directly when the cooling channel is designed as a hollow channel. The first half-shell of the cooling duct can be formed by a roof module frame, which, as described above, preferably has two wall sections extending obliquely to one another. The second half-shell of the cooling duct can preferably be formed by a face component, which, as described above, preferably has two wall sections extending at an angle to one another, by means of which the second half-shell is formed. The first half-shell and the second half-shell correspond to one another in this case, so that in the joined-together state a hollow channel is formed. It is also possible for the at least one cooling channel (which can be arranged as a structural unit in the edge region or in the hollow channel) to be made of two different materials. Such a cooling channel can thus be formed, for example, in the manner of a tube, which is formed from two half-shells which differ in terms of their material.
In a preferred embodiment, the at least one electrical and/or electronic component is arranged in a dry section of the roof module, which is protected from moisture, and the waste heat dissipated by the electrical and/or electronic component can be dissipated from the dry section by means of the cooling device. It is thereby possible for the electrical and/or electronic components to be arranged in a manner protected against moisture, for example in a housing or the like. By bringing the housing into direct contact with the cooling channel, for example via at least one face, heat can be dissipated from such a housing directly over the cooling channel. Alternatively, the housing can also be connected to the cooling channel in a heat-conducting manner by means of a heat-conducting element. In this way, a free positioning of the electrical and/or electronic components in the installation space of the roof module can be achieved. By separating the dry section from the wet section formed by the cooling device, it is possible to moisten the cooling fluid flow, for example, in order thereby to increase the absorbable heat.
Preferably, the at least one electrical and/or electronic component is connected directly or indirectly in a heat-transferring manner to the at least one cooling channel by means of at least one heat-conducting element. It is also preferred that the at least one cooling device comprises at least one cooling fan and/or at least one cooling body and/or at least one heat exchanger and/or at least one heat pump and/or at least one heat conducting tube. In principle, other components disclosed by thermal management (for example a compressor or a condenser) are also conceivable.
Alternatively or additionally, the cooling device may have one or more cooling fans in order thereby to generate an air flow in the cooling channel of the cooling device by means of the one or more cooling fans, for example in the case of only a low vehicle speed or in the case of a connection to the cooling circuit of the vehicle. Preferably, the one or more cooling fans are adjusted such that different volume flows through the cooling channel or channels can be set. The cooling fan is preferably integrated in the cooling channel.
Alternatively or additionally, the at least one electrical and/or electronic component may be arranged at least in regions on the cooling channel and/or be in heat-conducting connection with the cooling channel via a heat-conducting element. Particularly preferably, the at least one electrical and/or electronic component is in direct heat-conducting contact with the preferably metallic part of the cooling channel, for example by means of its (metal) housing, so that a loss-free heat transfer can be achieved. In this case, the (metal) housing of the at least one electrical and/or electronic component preferably forms a dry space which is arranged, for example, via a bottom (or flat) bearing surface on the outer side of a transverse or longitudinal beam of the roof module frame. In order to prevent heat transfer losses, a thermally conductive paste can preferably be arranged between these bearing surfaces.
As an alternative to arranging the at least one electrical and/or electronic component directly on the cooling channel, it is preferred that the heat transfer between the at least one electrical and/or electronic component and the cooling channel is provided by one or more heat conducting elements. In a particularly preferred embodiment, heat sinks (or fins) and/or heat exchangers and/or heat pumps and/or sheet metal parts and/or heat pipes (Heatpipe) are used as heat-conducting elements and/or the heat-conducting elements can be connected to a heat-conducting paste or other heat-conducting material. It is to be understood that a mixture of the above listed heat conducting elements may also be used, i.e. not only one type of heat conducting element. Furthermore, it should be understood that all heat generating components of the roof module may be enumerated or derived with at least one heat conducting element. Thus, the at least one electrical and/or electronic component may also comprise one or more heat conducting elements, for example. In each case, the heat-conducting element forms a heat transfer bridge between the at least one electrical and/or electronic component and the at least one cooling channel, so that waste heat or ambient heat is transmitted to the at least one cooling channel as losslessly as possible. The use of a heat-conducting element has the advantage that the design freedom can thereby be increased, since the at least one electrical and/or electronic component does not have to be arranged directly on the cooling channel, but can be positioned more freely than this.
In order to increase the efficiency of the heat transfer between the at least one electrical and/or electronic component and the cooling channel and also to increase the heat conduction within the cooling channel, it is also advantageous if the cooling device comprises a cooling body which preferably has a plurality of cooling ribs. For example, the heat sink can be a metal component (preferably made of aluminum) which, in order to increase its heat dissipation surface, has a plurality of indentations or elevations for transferring as much heat as possible from the at least one electrical and/or electronic component to the cooling fluid flow flowing in the cooling channel. Particularly preferably, the heat sink is arranged directly on the heat transfer surface between the at least one electrical and/or electronic component and the cooling channel (in the case of an environmental sensor arranged directly on the cooling channel). Alternatively, the heat sink can also be arranged, for example, at a heat introduction point of the heat conducting element in order to conduct heat away from the heat conducting element as efficiently as possible.
It is also preferred that damping material for damping noise or damping vibrations is arranged at predetermined positions of the cooling channel. Such a damping material is preferably arranged at least on the underside of the roof module frame, which is directed toward the vehicle interior, on which the cooling device is arranged or embodied.
In a preferred embodiment, the at least one cooling channel is configured to receive a cooling fluid supply from outside the roof module. Thus, it is possible, for example, for the roof module to comprise one or more inlets, for example in the form of ventilation slots, through which fresh air can be let into the roof module from the outside. The at least one access opening can preferably be arranged on the front side in the region of a front-side transverse beam or longitudinal beam of the roof module frame in a side region of the roof module parallel to at least one of the at least two longitudinal beams. Here, a lateral supply (inlet) of the cooling fluid is advantageous, since rain water cannot simply enter the cooling channel. Preferably, a type of grid or filter is installed in such an inlet, by means of which particles can be captured from the ambient air drawn in and thus not be passed into the cooling channel. Such an arrangement of the at least one air inlet has the advantage that a forced air flow is formed when the vehicle is moving, which is caused by the movement of the vehicle, so that preferably no additional, noisy fan is required to form the cooling fluid flow, at least from a certain speed of the vehicle. Thus, a low-noise operation is achieved by avoiding or at least reducing the use of cooling fans in the roof structure space.
Alternatively or additionally, the at least one cooling channel is preferably designed for connection to an air conditioning circuit of a motor vehicle in the vehicle interior. Preferably, the at least one cooling channel comprises, downstream, as viewed in the heat dissipation direction, an interface to an air conditioning circuit of the vehicle, so that the cooling fluid flow can be conducted into the air conditioning circuit of the vehicle after it has received waste heat of the at least one electronic component and/or ambient heat introduced from the outside. This makes it possible to dissipate waste heat of the at least one electronic component and/or ambient heat via the air conditioning circuit of the vehicle. The waste heat removed can be used, for example, to cool or heat the interior of the vehicle (depending on the temperature). For this purpose, the cooling duct is connected to the air conditioning circuit of the vehicle, for example, by one or more hose-like connecting devices. The air conditioning circuit of the vehicle can also form a sub-circuit, for example, which is designed parallel or parallel to the interior cooling device. In this way, it is possible to provide a different cooling power for the cooling of the at least one electronic component than for the cooling of the vehicle interior.
For example, it is also possible for the cooling device to have not only an external cooling fluid supply (inlet) but also a connection to the air-conditioning circuit of the vehicle, and a decision can be made between these two cooling air supply possibilities as appropriate. Thus, for example, it is possible to switch between an external air fluid supply and the use of the air conditioning circuit of the vehicle. If, for example, there is a cold external temperature, a pure external cooling fluid supply can be provided in order to reduce the power of the air conditioning circuit and thus also the fuel consumption of the vehicle.
Particularly preferably, the cooling fluid or the cooling air is wetted beforehand, in order to be able to absorb more heat as a result. To this end, it is advantageous if the cooling circuit comprises thermodynamic components, such as one or more condensers and evaporators. In this case, it is also preferred that the at least one electronic component is arranged in a dry region (for example in a moisture-tight housing) which forms a moisture barrier with respect to the cooling device configured as a wet region. This has the advantage that the cooling channel is arranged in the wet region and can absorb more heat there by using wet cooling air and nevertheless has an insulation with respect to the dry region.
In order to connect the cooling device to the air conditioning circuit of the vehicle in a power-enhancing manner, it is particularly preferred if the cooling channel comprises, downstream, as viewed in the heat dissipation direction, an interface to the air conditioning circuit of the vehicle, so that the cooling fluid flow can be introduced into the air conditioning circuit of the vehicle (and preferably dehumidified and/or cooled there) after it has absorbed waste heat of the at least one electronic component and/or ambient heat introduced from the outside. The interface can be designed, for example, as a tubular or hose-like connection and ensures a transition from the cooling air containing waste heat to the air conditioning circuit that is as loss-free as possible. The expression "downstream in the direction of heat dissipation" is understood to mean a direction in which a cooling fluid flow flows through the ambient sensor in order to dissipate heat. In this case, the cooling fluid flow has a higher temperature downstream of the ambient sensor, i.e. after absorption of the waste heat, than upstream of the sensor.
Alternatively or additionally to the air conditioning circuit connected to the vehicle, in a preferred embodiment the cooling channel comprises a cooling fluid outlet downstream, as viewed in the heat dissipation direction, so that the cooling fluid flow can be conducted out into the surroundings after it has absorbed the waste heat of the at least one electronic component and/or the heat of the surroundings conducted from the outside. The cooling fluid outlet can be provided structurally in the form of one or more air outlet channels which are arranged in the front face component and/or in the roof module frame on the rear side of the vehicle. Preferably, the cooling fluid outlet is arranged in the region of the side of the rear transverse member of the roof module frame on the rear side, i.e. parallel to the longitudinal direction of the vehicle. However, other arrangements of the cooling fluid outlet are also possible and may be at least structurally advantageous depending on the roof module type. In this embodiment, the air flow is preferably generated in that air is introduced into the air supply during movement of the vehicle (for example via an air supply channel on the rear side in one of the side rails of the roof frame), flows through the cooling device or the cooling duct or cooling ducts to the air outlet and is discharged there from the roof frame, preferably on the rear side. In this embodiment, it is preferably not necessary to actively generate an air flow by means of the cooling fan, so that a low-noise operation of the cooling device is ensured.
Preferably, the cooling device has an adjusting device, by means of which the cooling capacity of the cooling device can be adjusted. The control device may be integrated in the roof module, for example, or may be part of a control device of an air conditioning circuit of the vehicle. The control device preferably receives one or more signals from one or more temperature sensors and/or pressure sensors in order to determine the respective cooling state of the cooling device therefrom. In this way, it is possible to adjust the cooling power of the cooling device as a function of the waste heat of the ambient sensor or as a function of the ambient heat to be dissipated, and thus an optimum heat dissipation can always be ensured. The temperature and/or pressure sensor is preferably arranged not only upstream and downstream of the environmental sensor in the cooling channel and/or in the vicinity of the environmental sensor or in the immediate surroundings of the environmental sensor. In other words, it is preferably possible to adjust the volume flow and/or the temperature of the cooling fluid flow as a function of demand or as a function of the waste heat produced by the situation (comparable to the adjustment of the air conditioning system for the interior space).
Which types of electrical and/or electronic components are cooled by the cooling device of the invention are in principle arbitrary. The at least one electrical and/or electronic component comprises an environmental sensor, which is included in the roof module and which can emit and/or receive electromagnetic signals via the see-through region to detect the vehicle surroundings. In this case, any type of environmental sensor is used, in principle. Particularly advantageous is the cooling in the roof module provided according to the invention, wherein a lidar sensor and/or a radar sensor and/or a camera sensor and/or a multi-camera sensor are provided.
The invention preferably also relates to a motor vehicle having a roof module according to the invention.
It is to be understood that the embodiments mentioned above and the examples which are still to be explained below can be used both individually and in any combination with one another without departing from the scope of the present invention. The advantageous embodiments and embodiments mentioned in relation to the roof module can therefore be transferred in an equivalent manner to a motor vehicle having such a roof module.
Drawings
Embodiments of the invention are schematically shown in the drawings and exemplarily described below. In the drawings:
fig. 1 shows a schematic view of an embodiment of the roof module of the invention;
fig. 2 shows a schematic view of an exemplary embodiment of a roof module according to the invention, which can be mounted as a structural unit on a vehicle body roof frame;
fig. 3 shows a schematic view of an embodiment of the roof module of the invention in isolated view;
fig. 4 shows a schematic view of an embodiment of the roof module according to the invention in an exploded view;
FIG. 5 shows a schematic view of an embodiment of the cooling device of the present invention;
fig. 6 shows a sectional view of an embodiment of an edge region of the roof module according to the invention;
FIG. 7 illustrates a cross-sectional view of one embodiment of an edge region of a roof module having a cooling blower of the present invention; and
fig. 8 shows a sectional view of an exemplary embodiment of an edge region of a roof module according to the invention with a heat-conducting element.
Detailed Description
In fig. 1, a roof 100 of a vehicle (not shown in its entirety) is shown, which roof comprises a roof module 10 according to the invention. The roof module 10 (as is shown by the broken lines in fig. 2) is inserted as a separate structural unit into a roof body frame 104 of the vehicle or is placed on at least two body cross members 102 and at least two body side members 106 of the vehicle body 1000, by which the roof body frame 104 is formed. In the embodiment shown in fig. 1, the roof module 10 has a panoramic roof 108.
The roof module 10 includes a face member 12 of the present invention for forming a roof skin 14 of a vehicle roof 100 that serves as an outer sealing surface. The roof module 10 further comprises a roof module frame 15 on which the face component 12 is arranged or to which the face component 12 is secured, usually glued, in a loss-proof manner. The two main components of the roof module 10, namely the face component 12 and the roof module frame 15, are shown in an exploded view in fig. 4.
In the front region of the roof module 10 (viewed in the vehicle longitudinal direction x, which corresponds to the direction of travel of the vehicle), electrical and/or electronic components 16 in the form of environmental sensors 17 are arranged in an exemplary manner symmetrically with respect to the vehicle longitudinal axis x in fig. 1. The environmental sensor 17 is arranged directly behind a front body cross member 102 which defines a roof-side air duct which engages on a not shown vehicle windscreen. The environmental sensor 17 is arranged so as to be movable in and out or rigidly arranged on the face member 12. In this case, the environmental sensor 17 is a lidar sensor. Other sensor types, such as (multi-directional) cameras, which are used when driving (semi-) autonomously, may also be used. Other electrical and/or electronic components 16 may also be installed in the roof module 10.
The roof module 10 (and/or the environmental sensor 17) comprises a see-through area 18, which may for example be made of plastic, glass or other (partially) transparent material, which is preferably not brittle. The surroundings sensor 17 is oriented along an optical axis 20, which in the case of fig. 1 is oriented parallel to the vehicle longitudinal direction x. The field of view of the environment sensor 17 extends conically around the optical axis 20, in which field of view the environment sensor 17 can transmit and/or receive electromagnetic signals in order to thereby detect the vehicle surroundings.
The roof module 10 according to the invention also comprises a cooling device 22, by means of which waste heat emitted by the electronic components 16, for example the environmental sensors 17, and/or heat conducted from the outside can be conducted away. According to the invention, the cooling device 22 is arranged in an edge region 24 of the roof module 10, which is formed between the roof module frame 15 and the face component 12. The edge regions 24 enclose the respective panoramic roof 108 in the case of fig. 1 and 2. Since the roof module frame 15 is formed by at least one cross member 26 and at least two longitudinal members 28 (see fig. 4), an edge region 24 of the roof module 10 is defined. In the case of fig. 4, the roof module frame 15 has three cross members 26 and two longitudinal members 28, which form the roof module frame 15. It can be seen that the roof module frame 15 has a shape which is not only planar but also three-dimensionally formed, wherein the respective transverse beam 26 and longitudinal beam 28 bulge in the direction of the middle of the roof module, in order to thereby meet the rigidity and strength requirements and preferably provide a fixed platform for the face component 12. The transverse members 26 and the longitudinal members 28 have an S-shaped contour in their respective cross-section (viewed perpendicular to their longitudinal extent), as can be seen by way of example in fig. 6. Furthermore, a plurality of assembly interfaces 30 are provided on the transverse members 26 and the longitudinal members 28, which are arranged at a distance from one another, for example along the air guide edge (or tear edge) of the roof module frame 15 and along the arching region. The mounting interfaces 30 can preferably fix, for example screw, rivet, weld or bolt, the face component 12, which can have corresponding mating interfaces (not shown), to the roof frame module 15. In the case of fig. 6 to 8, the two components are joined by means of an adhesive or bonding means
31 are connected circumferentially and continuously (without interruption).
According to the invention, the cooling device 22 can be implemented in two alternative configurations. In a first embodiment, the cooling device 22 comprises at least one cooling duct 32 and is arranged as a one-piece or multi-piece structural unit in the edge region 24 of the roof module 10. Such an embodiment of the cooling device 22 is shown by way of example in fig. 5, wherein the cooling channel 32 is embodied here as a channel which surrounds the roof module 10 or the edge region 24 of the roof module 10. This surrounding cooling device 22 can be arranged as a structural unit (see fig. 4) or fixed in a cavity 34 (see fig. 6) which is formed between the roof module frame 15 and the face component 12.
In order to form the cavity 34, the transverse beam 26 and the longitudinal beam 28 each preferably have at least two wall sections 36 which extend at an angle to one another (see fig. 4 and 6). These wall sections 36 preferably define a first half-shell which partially encloses the cavity 34. The face component preferably has a U-shaped cross section (viewed perpendicularly to its longitudinal extent) in the edge region 24 (see fig. 6), and a second half-shell is formed by corresponding shaping of the face component 12, which, together with the first half-shell, encloses the cavity 34. For this purpose, the surface element likewise has at least two wall sections 38 (see fig. 6) which run obliquely to one another. Due to the longitudinal extension of the edge region 24, a hollow channel is formed inside this edge region 24.
In an alternative embodiment of the cooling device 22, the at least one cooling channel 32 is defined by the hollow channel 34 itself, which is formed in the edge region 24 between the roof module frame 15 and the face member 12. In this case, no structural unit in the sense of fig. 5 has to be assembled between the roof module frame 15 and the surface element 12.
Preferably, the at least one electrical and/or electronic component 16 is arranged in a dry section 40 of the roof module 10 that is protected from moisture (see schematically fig. 8). In this case, the waste heat discharged by the electrical and/or electronic components 16 is removed from the dry section 40 by means of the cooling device 22. To this end, the at least one electrical and/or electronic component 16 is directly or indirectly connected in a heat-transferring manner to the at least one cooling duct 32 via at least one heat-conducting element (and/or heat exchanger) 42 (see fig. 8). Preferably, the member 16 is connected to the heat exchanger 42, such as by one or more heat pipes 44 (see FIG. 8).
In order to generate a forced air flow, at least one cooling fan 46 and/or at least one cooling body can be arranged in the cooling channel 32 (see fig. 7).Furthermore, the cooling device 22 may have at least one cooling inlet 48 connected to the at least one cooling channel 32. Through this cooling inlet 48, the at least one cooling channel 32 is configured for receiving a cooling fluid supply from outside the roof module 10. Furthermore, the cooling device 22 may have at least one cooling outlet or cooling fluid outlet 50. That is, the at least one cooling channel 32 is preferably along the heat dissipation direction W A The cooling fluid outlet 50 is seen to be included downstream, so that the cooling fluid flow can be conducted away to the surroundings (see fig. 3 and 5) after it has received waste heat of the at least one electrical and/or electronic component 16 and/or heat conducted from the outside.
The cooling device 22, which is illustrated in fig. 5 as an exemplary one-piece structural unit, comprises a plurality of cooling channels 32 (or cooling channel sections) which are connected to one another in one piece. The cooling device 22 comprises two cooling inlets 48 which are arranged in the lateral region of the roof module 10 on the vehicle head side (in front in the travel direction x) and are closed by a ventilation grille 52 (see fig. 3). In the center section (viewed along the longitudinal members 28), a heat exchanger 42 is integrated between the channel sections of the cooling channel 32 on each roof side (on the right and left in the travel direction x) for conducting heat away from the component 16. Downstream in the cooling passage 32 (in the heat radiation direction W) A ) Cooling fans 46 are provided respectively. The cooling device 22 furthermore has two cooling outlets 50 arranged on the rear side of the vehicle, through which the warmed exhaust gases can leave the roof module 10.
List of reference numerals
10. Roof module
12. Surface component
14. Vehicle roof outer skin
15. Roof module frame
16. Electrical and/or electronic component
17. Environmental sensor
18. Region of fluoroscopy
20. Optical axis
22. Cooling device
24. Edge region
26. Cross beam
28. Longitudinal beam
30. Assembly interface
31. Adhesive or adhesive joint
32. Cooling channel
34. Hollow cavity
36. Wall section of a roof module frame
38. Wall section of a surface component
40. Dry section
42. Heat transfer element, heat exchanger
44. Heat conduction pipe
46. Cooling fan
48. Cooling inlet
50. Cooling outlet, cooling fluid outlet
52. Ventilation grille
100. Vehicle roof
102. Vehicle body cross beam
104. Roof body frame, roof frame structure
106. Vehicle body longitudinal beam
108. Panoramic roof
1000. Vehicle body
x longitudinal direction of vehicle, direction of travel
y vehicle width direction
W A And (4) heat dissipation direction.
Claims (13)
1. A roof module (10) for forming a roof on a motor vehicle, having: a surface component (12) which at least partially forms a roof skin (14) of the vehicle roof, wherein the roof skin is used as an outer sealing surface; a roof module frame (15) on which the face member (12) is arranged; at least one electrical and/or electronic component (16); and a cooling device (22), by means of which waste heat discharged by the electronic component (16) and/or heat conducted from the outside can be dissipated, characterized in that the cooling device (22) comprises at least one cooling channel (32) and is arranged as a one-piece or multi-piece structural unit in an edge region (24) of the roof module (10); or the at least one cooling channel (32) is defined by a hollow channel which is arranged in an edge region (24) of the roof module (10) and is bounded by the roof module frame (15) and the face component (12).
2. The roof module as claimed in claim 1, characterized in that the roof module frame (15) is formed by at least one cross beam (26) and at least two longitudinal beams (28), which define the edge region (24).
3. The roof module as claimed in claim 1 or 2, characterized in that the at least one cooling channel (32) is formed circumferentially on the roof module frame (15).
4. The roof module as claimed in one of the preceding claims, characterized in that the at least one cooling channel (32) is formed from at least two different materials.
5. The roof module according to claim 4, characterized in that the at least one cooling channel (32) consists of two half shells, wherein a first of the two half shells is made of plastic and a second of the two half shells is made of a metal material, preferably sheet metal.
6. The roof module as claimed in one of the preceding claims, characterized in that the at least one electrical and/or electronic component (16) is arranged in a dry section (40) of the roof module (10) which is protected from moisture, and waste heat which is dissipated by the electrical and/or electronic component (16) can be conducted away from the dry section (40) by means of the cooling device (22).
7. The roof module according to one of the preceding claims, characterized in that the at least one electrical and/or electronic component (16) is directly or indirectly connected in a heat-transferring manner with the at least one cooling channel (32) by means of at least one heat-conducting element (42).
8. The roof module according to any of the preceding claims, characterized in that the at least one cooling device comprises at least one cooling fan (46) and/or at least one cooling body and/or at least one heat exchanger (42) and/or at least one heat pump and/or at least one heat pipe (44).
9. The roof module as claimed in one of the preceding claims, characterized in that the at least one cooling channel (32) is configured for taking a cooling fluid supply from outside the roof module (10) and/or for connecting to an air conditioning circuit of a motor vehicle.
10. The roof module as claimed in one of the preceding claims, characterized in that the at least one cooling channel (32) runs in the heat dissipation direction W A The cooling fluid outlet (50) is arranged downstream so that the cooling fluid flow can be discharged to the surroundings after it has received the waste heat of the at least one electric and/or electronic component (16) and/or the heat introduced from the outside.
11. The roof module as claimed in one of the preceding claims, characterized in that the at least one electrical and/or electronic component (16) comprises an environment sensor (17), in particular a lidar sensor and/or a radar sensor and/or a camera sensor and/or a multi-camera sensor, which can send and/or receive electromagnetic signals through a see-through area (18) for detecting the vehicle surroundings.
12. The roof module as claimed in any of the preceding claims, characterised in that it can be fitted as a structural unit on a roof frame structure (104) of a motor vehicle by means of the roof module frame (15).
13. A motor vehicle comprising a roof module (10) according to any of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021122866.2A DE102021122866A1 (en) | 2021-09-03 | 2021-09-03 | Roof module with a cooling device |
| DE102021122866.2 | 2021-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115743315A true CN115743315A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211069050.6A Pending CN115743315A (en) | 2021-09-03 | 2022-09-02 | Roof module with cooling device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115743315A (en) |
| DE (1) | DE102021122866A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12023981B2 (en) * | 2022-07-22 | 2024-07-02 | Hanon Systems | Quad zone booster intake LPM cooling assembly |
| DE102022132516B3 (en) | 2022-12-07 | 2024-01-18 | Webasto SE | Roof module with cooling device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11240941B2 (en) | 2018-09-12 | 2022-02-01 | Toyota Motor Engineering & Manufacturing North America, Inc. | Autonomous vehicle lidar cooling system |
| US10597002B1 (en) | 2018-09-21 | 2020-03-24 | Ford Global Technologies, Llc | Imaging system |
-
2021
- 2021-09-03 DE DE102021122866.2A patent/DE102021122866A1/en active Pending
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- 2022-09-02 CN CN202211069050.6A patent/CN115743315A/en active Pending
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|---|---|
| DE102021122866A1 (en) | 2023-03-09 |
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