EP4078720A1 - Dispositif de régulation thermique pour un composant électrique - Google Patents
Dispositif de régulation thermique pour un composant électriqueInfo
- Publication number
- EP4078720A1 EP4078720A1 EP20842266.7A EP20842266A EP4078720A1 EP 4078720 A1 EP4078720 A1 EP 4078720A1 EP 20842266 A EP20842266 A EP 20842266A EP 4078720 A1 EP4078720 A1 EP 4078720A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- housing
- condensation
- thermal regulation
- dielectric fluid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to the field of thermal regulation devices for electronic systems comprising electrical or electronic components liable to heat up during their operation.
- the electronic systems likely to be concerned by the present invention can consist of computer servers as well as electrical energy storage systems, in particular battery cells, for motor vehicles.
- thermal regulation devices make it possible to modify a temperature of an electrical energy storage system, whether this is when the vehicle is started in cold weather, by increasing its temperature for example, or whether it is during travel or during a recharging operation of said system, by reducing the temperature of the battery cells, which tend to heat up during their use.
- thermal regulation devices make use of heat exchangers.
- the various battery elements of an electrical energy storage system can in particular be cooled by means of a cold plate inside which a cooling fluid circulates, the plate being in contact with the battery cells to be cooled.
- heat exchangers can lead to inhomogeneous cooling of the battery elements of the same electrical energy storage system, thus leading to a decrease in the overall performance of said system.
- These thermal regulation devices also have high thermal resistance due to the thicknesses of material present between the cooling fluid and the battery cells.
- devices for cooling the electric battery elements of electric or hybrid cars comprising a hermetically sealed housing in which the battery elements of the energy storage system electric are partially immersed in a dielectric fluid.
- a heat exchange is ensured between the battery cells and the dielectric fluid, a dielectric fluid tank being located outside the housing and connected to said housing in order to allow circulation of the dielectric fluid.
- Document FR3077683 discloses a device for cooling the battery cells which also comprises a hermetic case in which a dielectric fluid is placed, but in which the dielectric fluid is projected onto the battery cells by a circuit and appropriate projection means. In contact with the battery cells which have heated up during their operation, the sprayed dielectric fluid tends to vaporize and the vapor propagates in the housing and in particular along the walls delimiting the housing.
- Document FR3077683 discloses the presence of a condensation wall, comprising within it a refrigerant fluid circuit, the wall being said to be condensing in that the temperature of this wall allows the vapor to condense so that the dielectric fluid takes up a again. liquid form.
- the object of the invention is to offer an alternative for thermal regulation of electronic systems, whether they are computer servers, electrical energy storage systems for motor vehicles or any other type of system comprising electrical components. or electronics liable to heat up during their operation or recharging, by proposing a thermal regulation assembly which is capable of bringing the electrical component to the desired temperature within a defined time.
- the present invention relates to a thermal regulation device for an electrical or electronic component, the temperature of which must be regulated, said electrical or electronic component being capable of giving off heat during its operation and / or during its charging
- the thermal regulation device comprising a housing extending along a longitudinal axis and configured to house at least the electrical or electronic component, a circuit of a dielectric fluid and a device for projecting said dielectric fluid towards the electrical component or electronic, characterized in that the phase change temperature of the dielectric fluid is such that it is capable of being vaporized in contact with the electrical or electronic component, in that the housing comprises at least one wall for condensing the dielectric fluid under its vaporized form and in that at least one outer face and / or one inner face of the at least one wall of condensation of the housing has at least reliefs configured to promote condensation of the dielectric fluid in the vaporized state.
- the housing may include, at a lower portion, a dielectric fluid recovery tank in the liquid state.
- reliefs protruding or recessed shapes of a first plane, in which the outer face of the condensation wall is essentially inscribed, or of a second plane, in which the inner face is essentially inscribed. of the condensation wall. Such reliefs can make it possible to increase the heat exchange surface of the corresponding face of the condensation wall with a flow of outside air making it possible to cool the condensation wall and / or allow guidance along the corresponding face of the wall. '' a fluid participating in cooling the condensation wall and / or allowing the evacuation of the condensed dielectric fluid to allowing the vaporized form of the fluid to contact the corresponding face of the condensation wall.
- the thermal regulation device aims to optimize the condensing performance of at least one condensing wall of the housing so as to improve thermal regulation of electrical or electronic components.
- At least part of the reliefs consists of a plurality of guiding members of a flow of air outside the housing, the guiding members extending projecting from at least a first plane essentially comprising the external face of the condensation wall.
- the guide members consist of ribs emerging from the condensation wall to the outside of the housing.
- the guide members thus participate in increasing the surface area of the external face and therefore the heat exchange surface between the condensation wall and the air flow outside the housing.
- adjacent guide members define a passageway for the circulation of air flow outside the housing.
- the guide members extend parallel to the longitudinal axis of extension of the housing.
- the guide members thus have a substantially rectilinear structure. Also, the guide members extend parallel to each other within the same condensation wall. These guide members are in particular configured to extend parallel to a main direction of circulation of the air flow outside the housing.
- the guide members can have a profile of variable shape, for example square, rectangular, triangular or even trapezoidal.
- the guide members may extend over the entire length of the condensate wall, said length being measured along the longitudinal axis of extension of the housing.
- At least part of the reliefs consists of a plurality of discharge members extending recessed in the second plane. essentially comprising the internal face of the condensation wall, a depth of the discharge members being less than a thickness of the condensation wall measured between the internal face and the external face.
- the evacuation organs extend between the foreground and the second plane.
- One of the main functions of these evacuation members is to allow, in particular by capillary action, the evacuation of the dielectric fluid condensed in contact with the condensation wall carrying these evacuation members.
- these evacuation members make it possible to free the internal face of the condensation wall and to ensure that there does not persist on this condensation wall a liquid film which could prevent the heat exchange between the condensation wall.
- dielectric fluid vapor which continues to be formed in contact with the electrical or electronic components in operation and the condensation wall.
- These evacuation members can allow an increase in the thermal contact surface between the condensation wall and the vaporized dielectric fluid so as to promote condensation of the latter.
- the evacuation organs can extend in different orientations.
- a first subset of discharge members may extend along the orientation, hereinafter called the first orientation, substantially perpendicular to the longitudinal axis of extension of the housing, for example along in a transverse direction or in a vertical direction, while a second subset of discharge members extends in a second orientation, substantially parallel to the longitudinal axis.
- the discharge members extend in at least one orientation, said orientation being substantially perpendicular to the longitudinal axis of extension of the housing.
- the housing comprises the dielectric fluid recovery tank in the liquid state, and at least one sub-assembly of the discharge members opens into the recovery tank.
- at least part of the discharge members contributes to promoting the flow of the dielectric fluid condensed by contact with the condensation wall directly towards the recovery tank.
- the thermal regulation device can comprise the guide members, arranged at the level of the external face of the condensation wall, and the discharge members, arranged at the level of the internal face of this same wall. of condensation.
- the discharge members can then extend perpendicularly to the guide members.
- the housing comprises at least one base open on at least one side and comprising a bottom wall from which emerge at least two side walls extending parallel to a substantially longitudinal direction. parallel to the longitudinal axis and two longitudinal end walls delimiting the housing along the longitudinal direction, the housing comprising at least one cover configured to close the base and the at least one condensing wall being formed by the cover or a side wall or a longitudinal end wall of the base.
- the thermal regulation device may comprise a plurality of condensation walls, the cover and / or at least one side wall and / or at least one longitudinal end wall of the base forming one of said walls of the base. condensation.
- the cover and all of the side walls and / or the longitudinal end walls of the base can form condensation walls.
- thermal regulation device comprises a plurality of condensation walls
- they can be made according to any one of the embodiments as described above.
- At least part of the discharge members included in a first condensation wall are fluidly connected to at least part of the condensation members included in at least one second condensation wall. Continuity is thus formed between the discharge members of two distinctly produced subassemblies on adjacent walls.
- the first condensing wall can be formed by the cover and the at least one second condensing wall can be formed by one of the side walls and / or one of the longitudinal end walls.
- At least a subset of the discharge members can open into the recovery tank.
- at least part of the discharge members of the second condensation wall and / or at least part evacuation members of the first condensation wall open (s) into the recovery tank, in particular when the sub-assemblies are arranged on side walls and / or longitudinal end walls.
- a subset of discharge members arranged in a condensation wall formed by the cover communicates fluidly with the recovery tank by means of one or more subsets of discharge members arranged on side walls and / or longitudinal end walls.
- the thermal regulation device can comprise a circuit, called the second circuit, of heat transfer fluid which is distinct from the dielectric fluid circuit, hereinafter called the first circuit, the second circuit. of heat transfer fluid extending at least in part in a thickness of the condensation wall between the internal face and the external face.
- the heat transfer fluid can in particular consist of a refrigerant such as glycol water, Ri34a or i234yf, or even carbon dioxide, without this list being exhaustive.
- a refrigerant such as glycol water, Ri34a or i234yf, or even carbon dioxide, without this list being exhaustive.
- the first circuit and the second circuit are separate, so that the dielectric fluid, circulating in the first circuit, and the refrigerant fluid, circulating in the second circuit, are not mixed.
- the thermal regulation device can comprise a plate, housed in the housing, and the circuit, called second circuit, of heat transfer fluid which is separate from the dielectric fluid circuit, hereinafter referred to as the first circuit, the second heat transfer fluid circuit extending at least in part into the plate.
- the plate functioning as a cold plate, can be configured to implement at least one heat exchange between the refrigerant fluid circulating in the second circuit and the dielectric fluid circulating in the first circuit.
- the invention also relates to a thermal regulation assembly comprising at least one enclosure, a ventilation device configured to draw an air flow from the enclosure or to blow an air flow into the enclosure and a thermal regulation device.
- the enclosure delimiting an air flow circulation duct in which the thermal regulation device extends, the thermal regulation device being arranged in the enclosure so that the longitudinal axis of extension of the housing extends parallel to a direction of air flow.
- FIG 1 shows a vehicle equipped with a thermal regulation assembly comprising at least one thermal regulation device for an electrical or electronic component
- FIG 2 shows a schematic perspective view of the thermal regulation device
- FIG 3 shows a first schematic perspective view of a condensation wall of the thermal regulation device according to the invention
- FIG 4 shows a second schematic perspective view of the condensation wall as illustrated in Figure 3;
- FIG 5 is a schematic perspective representation of the arrangement of the thermal regulation device in an enclosure of the thermal regulation assembly;
- FIG 6 is a cross section of the thermal regulation device as shown in Figure 2.
- the longitudinal direction will be represented by the longitudinal axis X while the vertical Y and transverse Z axes will respectively represent the vertical and transverse directions. These axes together define an XYZ trihedron represented in the figures requiring it.
- the qualifiers "up” or “upper” will be represented by the positive direction of the vertical Y axis, the “lower” or “lower” qualifiers being represented by the negative direction of the same vertical Y axis.
- the invention relates to a thermal regulation device i of an electronic system comprising electrical or electronic components 3 whose temperature must be regulated, said electrical or electronic component 3 being capable of giving off heat during its operation.
- the thermal regulation device 1 according to the invention particularly comprises at least one condensation wall 5 of which an external face 7 and / or an internal face 9 comprises (s) a plurality of reliefs 11.
- the invention also relates to a regulation assembly. thermal 13 comprising said device 1.
- the electronic systems likely to be concerned by the present invention can consist of computer servers as well as electrical energy storage systems 15, in particular batteries, for motor vehicles.
- thermal regulation device 1 will be described in relation to an electrical energy storage system 15 of a motor vehicle, but it must be understood that such an application is not not limiting and that it could in particular be applied in the context of the invention to the various electronic systems.
- FIG. 1 illustrates an electrical energy storage system 15 capable in particular of equipping a motor vehicle 17 with electric or hybrid motorization.
- Such an electrical energy storage system 15 is intended in particular to supply electrical energy to an electric motor, not shown, fitted to the motor vehicle 17 with a view to its movement.
- the electrical energy storage system 15 tends to heat up. Also, the electrical energy storage system 15 is integrated into the thermal regulation assembly 13 of the vehicle 17 with a view, in particular, to its cooling. It should be noted that the thermal regulation assembly 13 which will be described later could also consist of a system aimed at increasing the operating temperature of the electrical storage system 15, for example when the vehicle is started.
- the thermal regulation assembly 13 comprises at least one enclosure 19, the thermal regulation device 1 and a ventilation device 18.
- the enclosure 19 is open towards a front face of the vehicle 17 at the level of an air inlet 21, through which an air flow FA, for example an air flow outside the vehicle 17, is liable to enter. to circulate in the enclosure 19, and towards the rear of the vehicle 17 at the level of an air outlet 23.
- the enclosure 19 thus delimits a circulation duct 25 of the air flow FA in which in which s' extends the thermal regulation device 1 comprising the electrical energy storage system 15.
- the ventilation device 18 is arranged in the enclosure 19 and is configured to ensure the circulation of the air flow FA within said enclosure 19.
- the ventilation device 18 may in particular consist of a fan or a blower. It can be arranged upstream, as illustrated, or downstream of the thermal regulation device 1 in a direction of circulation Si of the air flow FA in order to be able to push or suck the air flow respectively into the circulation duct. 25 delimited by the enclosure 19.
- the air flow FA enters the enclosure 19 via the air inlet 21 and is brought into thermal contact with the thermal regulation device 1 in order to to participate in the heat treatment of the electrical energy storage system 15 housed in said device 1.
- the air flow FA may be weak or even nonexistent, so that the ventilation device 18 then ensures the supply of an air flow FA to the enclosure 19 or increasing the flow rate of said air flow FA.
- FIG. 2 schematically illustrates an embodiment of the thermal regulation device 1 according to the invention.
- the thermal regulation device 1 comprises a housing 27 extending along a longitudinal axis 100 of extension and delimiting an internal volume 200 in which is housed at least the electrical or electronic component 3.
- the housing 27 houses three components taking the form of battery cells 31 of an electrical energy storage system 15, but it should nevertheless be understood that such a representation is made for information only and that the number or shape of the electrical or electronic components 3 arranged in the thermal regulation device 1 is in no way limiting. It is also understood that other configurations of the electrical energy storage system 15 could be implemented according to the invention as long as this system comprises a thermal regulation device 1 in accordance with the teachings of the invention.
- the housing 27 comprises at least one base 33 open on at least one side, this base 33 more particularly comprising a bottom wall 35 from which emerge vertically at least two side walls 37 extending longitudinally parallel to the longitudinal axis 100, and two longitudinal end walls 39 delimiting the housing 27 along the longitudinal axis X.
- the housing 27 comprises also at least one cover 41 configured to close the base 33.
- the cover 41 is arranged above the base 33 when the electrical energy storage system 15 is mounted on the vehicle 17.
- the thermal regulation device 1 further comprises a circuit of a dielectric fluid FD, hereinafter referred to as the first circuit 43 and a device 45 for projecting said dielectric fluid in the direction of the battery cells 31, the temperature of which must be regulated.
- the projection device 45 may in particular consist of a plurality of projection nozzles, here not shown, which are arranged on the first circuit 43, each projection nozzle being able to spray and orient the dielectric fluid in the liquid state. towards the battery cells 31 in order to cool them if necessary.
- the first circuit 43 is arranged in the housing 27 to spray the dielectric fluid on each of the battery cells 31, in particular on separate sides of said elements 31. Also, as illustrated, the first circuit 43 can be arranged in the internal volume. 200 of the housing 27 so as to extend between one of the walls 37, 39, 42 of the housing 27 and one of the battery elements 31 or between two adjacent battery elements 31, as shown schematically in FIG. 6.
- the first dielectric fluid circuit 43 is here formed by at least one tubular distribution pipe 47 disposed projecting from the internal face 9 of the side walls 37 and / or of the end walls 39.
- the distribution pipe 47 can be made of a material different from that used to make the walls of the housing 27, for example aluminum.
- this distribution pipe 47 could, without departing from the context of the invention, be produced in a thickness of at least any one of the walls 37, 39, 41 of the housing 27, measured between the face internal 9 and the external face 7 of the wall considered.
- the dielectric fluid capable of circulating in the first circuit 43 is chosen as a function of its phase change temperatures. More particularly, the dielectric fluid must be characterized at least by a phase change temperature such that this dielectric fluid, sprayed towards the battery cells 31 in the liquid state, is capable of being vaporized in contact with said battery cells 31. .
- the dielectric fluid must have an evaporation temperature at atmospheric pressure greater than one. temperature of the order of 32-34 ° C and a condensation temperature lower than a temperature of the order of 29-3i ° C.
- the housing 27 of the thermal regulation device 1 comprises, as previously explained, at least one condensing wall 5 configured to condense the dielectric fluid in its vaporized form.
- the condensation wall 5 is configured to implement at least one heat exchange with the dielectric fluid in the gaseous state.
- condensation wall 5 is configured to implement at least one heat exchange with the air flow FA circulating in the enclosure 19, outside the housing 27.
- the condensation wall 5 comprises, at its external face 7 and / or its internal face 9, a plurality of reliefs 11 in particular configured to promote the condensation of the dielectric fluid at vaporized state.
- Said reliefs 11 have microscopic dimensions, so that they are not visible in the present figure.
- the reliefs 11 and their arrangement within the condensation wall 5 will be further detailed below with reference to FIGS. 3 3 5.
- the condensation wall 5 may be formed by the cover 41, as shown here, or by one of the side walls 37 or by one of the longitudinal end walls 39 of the base 33.
- the thermal regulation device 1 can comprise a plurality of condensation walls 5, the cover 41 and / or at least one of the side walls and / or at least one longitudinal end wall of the base 33 which can then form one of said condensation walls 5.
- the cover 41 and the set of side walls 37 and end walls 39 of the base 33 can form condensation walls 5 of the vaporized dielectric fluid.
- the housing 27 comprises at least one recovery tank 49, here shown in dotted lines, intended to recover the dielectric fluid in the liquid state, whether it is dielectric fluid leaving directly from one of the projection devices 45 or dielectric fluid. condensed by the condensation wall (s) after being vaporized.
- the recovery tank 49 is placed in a lower portion of the base 33 and can be partially delimited by the bottom wall 35 or attached in the base 33 of the housing 27.
- the recovery tank 49 is provided with a discharge hose 51 for the dielectric fluid recovered inside the recovery tank 49, the discharge hose 51 being in fluid communication with a recirculation line 53 for the dielectric fluid.
- the recirculation pipe 53 is equipped with a device for circulating the dielectric fluid, such as a pump 55, to return the dielectric fluid to a dielectric fluid inlet 57 in the housing 27 and then to the distribution pipe 47 of the first circuit 43. It is understood that such inlet 57 and discharge hose 51 of the dielectric fluid FD can, without departing from the context of the invention, be arranged in any one of the walls 37, 39 of the base 33 of the housing 27.
- the pump 55 and the recirculation line 53 could be arranged in the internal volume 200 of the housing 27.
- the thermal regulation device 1 may include a second circuit 59, distinct from the first circuit 43 of dielectric fluid, configured to allow the circulation of a heat transfer fluid FC.
- the second heat transfer fluid circuit 59 is in particular designed to bring the condensation wall to a temperature favoring the condensation by this condensation wall of the vaporized dielectric fluid.
- the second heat transfer fluid circuit 59 can extend at least partly in at least any one of the walls 37, 39, 41 of the housing 27 and it can more particularly be included in the condensation wall 5. It extends then at least partly in a thickness 300 of the condensation wall 5, between the internal face 9 and the external face 7 of the said condensation wall 5, here formed by the cover 41.
- the circulation of the heat transfer fluid FC in the second circuit 59 is ensured by a heat transfer fluid inlet 61 and a heat transfer fluid outlet 63 each in fluid communication with the second circuit 59.
- the second circuit 59 is here schematically shown in dotted lines and takes the form of a coil extending between the inlet and the outlet of the coolant, so as to allow cooling of the assembly. of the surface of the wall comprising it, here the cover 41, and, consecutively, effective cooling of the dielectric fluid in the gaseous state over the entire surface of the wall, here of the cover.
- the thermal regulation device 1 can comprise a plate 65, functioning as a cold plate, housed in the housing 27.
- the second heat transfer fluid circuit 59 then extends to the less in part in the plate 65.
- the plate 65 may form the condensation wall 5 or else function as a condenser of the dielectric fluid in a manner complementary to the at least one condensation wall 5.
- the thermal regulation device 1 can be configured to include a single circuit, the first circuit 43 of dielectric fluid, or two separate circuits, the first circuit 43 of dielectric fluid and the second circuit 59 of heat transfer fluid.
- the air flow FA circulating along the casing outside the latter contributes to reducing the temperature, or at the very least to containing the rise in temperature, of the wall along which the air flow circulates, and this temperature regulation facilitates the condensation of the dielectric fluid capable of being in the form of vapor along this wall inside the housing.
- Figures 3 to 5 illustrate the condensing wall 5 in more detail, whether it consists of the cover, one of the side walls or one of the longitudinal end walls of the housing.
- Figure 3 makes visible the outer face 7 of said wall while
- Figure 4 shows the inner face 9, turned towards the internal volume 200 of the housing 27, of the condensation wall 5.
- Figure 5 illustrates the arrangement of the device. thermal regulation 1 in the enclosure 19 and more particularly the positioning of the reliefs 11 relative to the air flow FA circulating in the circulation duct 25 defined by the enclosure 19. It is understood that, in the figures described below, the scale of the various reliefs has been increased for the sake of clarity, so that the dimensions of the various reliefs n shown here are not representative of reality.
- Part of the reliefs 11 may consist of a plurality of guide members 67 of the air flow FA outside the housing 27.
- the guide members 67 emerge from the condensation wall 5 and extend outside the housing 27. , projecting from a first plane 400 in which the outer face 7 is essentially inscribed. They thus contribute to increasing the heat exchange surface area of the outer face 7 so that the calories recovered from the vaporized dielectric fluid capable of being in contact with the internal face 9 can be evacuated more quickly to the outside of the housing.
- the guide members 67 have an elongated, substantially rectilinear structure. They extend parallel to the longitudinal axis 100 of extension of the housing 27 and parallel to each other. When the thermal regulation device 1 is positioned in the enclosure 19, the latter is arranged so that the longitudinal axis 100 of extension of the housing 27 extends parallel to the direction of flow Si of the air flow FA. In other words, the guide members 67 of the outer face 7 extend substantially parallel to the direction of flow Si of the air flow FA.
- two adjacent guide members 67 define a circulation passage 69 of the air flow FA outside the housing 27 in contact with the external face 7 of the condensation wall 5.
- this air flow FA can be sucked or pushed into said circulation corridors 69 by the ventilation device, here not shown and visible in Figure 1.
- the guide members 67 extend over the whole of an extension length 510 of the condensation wall 5, said length being measured along the longitudinal direction Ox between end edges. 71 longitudinally delimiting said wall.
- the guide members 67 may have profiles of variable shape, examples of which are illustrated in the insert 1000.
- the guide members 67 may have, without limitation, a square, rectangular, triangular or even trapezoidal shape.
- Each guide member 67 is characterized by a height of the form 670 and by a width of the form 680.
- the height of the form 670 is measured along the vertical axis Y, perpendicular to the outer face 7, between the first plane 400 and the free end 73 of the guide member 67.
- the width of the form 680 is measured, at the level of the first plane 400 and along the transverse axis Z, the distance separating two end points furthest from a base 75 of the guide member 67.
- the height of the form 670 and the width of the form 680 may be of the order of 0.2 to 0.5 millimeters.
- the adjacent guide members 67 are separated by a defined spacing 650, such a spacing 650 defining a width of the passageway 69 of the air flow FA.
- the spacing 650 between adjacent guide members 67 is measured at the level of the first plane 400, along the transverse axis Z, between two points closest to the bases 75 of each of said guide members 67.
- the guide members 67 can be regularly arranged in the condensation wall 5 so as to have identical spacings 650 throughout said wall.
- the spacing 650 measured between adjacent guide members 67 may have a value substantially equal to the value of the width of the form 680 of the guide members 67.
- the guide members 67 are thus regularly arranged over the whole of an extension width 520 of the condensation wall 5 measured along the transverse axis Z between two side edges 77 of said wall.
- FIG. 4 makes more particularly visible a characteristic according to which part of the reliefs 11 of the condensation wall 5 can consist of a plurality of discharge members 79 extending in the hollow of a second plane 700 essentially comprising the internal face. 9 of the condensation wall 5.
- these discharge members extend at least in part between the first plane 400 and the second plane 700. If they also contribute to increasing the heat exchange surface of the internal face 9, it is especially notable that these discharge members make it possible to release by capillary action the dielectric fluid returning to its liquid form under the effect of heat exchange with the condensation wall.
- the dielectric fluid in the liquid state is thus quick to form a liquid film on the internal face of the wall. and the discharge members make it possible to release this fluid in liquid form through the channels thus formed, at a distance from the internal face of the condensation wall 5.
- the discharge members 79 Similar to the guide members 67, the discharge members 79 have a substantially rectilinear elongate structure. They extend in an orientation substantially perpendicular to the longitudinal axis 100 of extension of the housing 27, parallel to each other.
- the discharge members 79 may have profiles of variable shape, examples of which, without limitation, are illustrated in the box 2000.
- the guide members 67 may have a square or rectangular shape, triangular, trapezoidal, or even, as shown in the condensation wall 5, semi-circular.
- Each discharge member 79 is characterized by a depth 790 less than the thickness 300 of the condensation wall 5.
- the depth 790 is measured vertically, that is to say perpendicular to the internal face 9 of the condensation wall. , between the second plane 700 and the bottom 81 of the evacuation member 79.
- Each discharge member 79 is characterized by a width, called the width of the structure 795.
- the width of the structure 795 is measured at the level of the second plane 700, here longitudinally, and corresponds to the distance separating the two most distant end points d 'an opening 83 of the guide member.
- the depth 790 and the width of the structure 795 of the discharge member 79 may be in the range of 0.2 to 0.5 millimeters.
- adjacent discharge members 79 are separated by a defined gap 750.
- the distance 750 between the adjacent discharge members 79 is measured in particular at the level of the second plane 700, perpendicular to the discharge members, that is to say here longitudinally, between the openings 83 of said members 79.
- the discharge members 79 are regularly arranged in the condensation wall 5, so as to have identical spacings 750 throughout said wall.
- the measured spacing 750 may have a value substantially equal to the width of the structure 795 of the organ evacuation 79.
- the evacuation members 79 can be regularly arranged over the entire length of extension 510 of the condensation wall 5.
- the condensation wall 5 can thus be produced according to three embodiments.
- all the reliefs 11 of the condensation wall 5 are guide members 67 as previously mentioned, and these reliefs have the function of increasing the heat exchange surface of the condensation wall 5 with an external air flow passing along the external face of this condensation wall, so as to cool the condensation wall to promote the condensation of the dielectric fluid which has just been vaporized and which tends to be deposited on the internal face of this condensation wall.
- all the reliefs 11 of the condensation wall 5 are evacuation members 79 as previously mentioned, and these reliefs have the main function of allowing the evacuation of the dielectric fluid once it has become liquid again, to so as to free the internal face and promote the condensation of the dielectric fluid which has just been vaporized and which tends to be deposited on the internal face of this condensation wall.
- part of the reliefs 11 of the condensation wall 5 consists of guide members 67 and the other part of discharge members 79, which makes it possible to combine the two effects described above and thus greatly improve the performance of condensation of the dielectric fluid and, consecutively, of cooling of the electrical or electronic components.
- the discharge members 79 extending in the orientation perpendicular to the axis of extension of the housing 27 also extend perpendicularly to the sides. guide members 67.
- the wall the condensation wall 5 can also comprise at least in part the second heat transfer fluid circuit 59, not shown here, and this independently of the embodiment implemented.
- the thermal regulation device 1 can comprise a plurality of condensation walls 5. These different condensation walls 5 can then be produced according to any one of the embodiments.
- the thermal regulation device 1 may thus comprise one or more condensation wall (s) formed by the cover 41 and / or by at least one of the side walls 37 and / or at least one of the walls d. 'longitudinal end 39, each of these condensation walls 5 being able to implement the first, the second or the third embodiment and each of these condensation walls 5 being able or not to include the second circuit 59 of heat transfer fluid.
- Figures 5 and 6 illustrate, by way of indication and without limitation, an exemplary embodiment of such a thermal regulation device 1, Figure 6 illustrating a longitudinal section of said device taken along a plane 1500, as shown in FIG. 2, comprising the longitudinal axis 100.
- a first condensation wall 501 is formed by the cover 41.
- This first condensation wall 501 is produced according to the third embodiment and comprises members 67 for guiding the air flow.
- FA and discharge members 79 visible by transparency in FIG. 5 and shown schematically in section in FIG. 6.
- the cover 41 comprises the second circuit 59 of heat transfer fluid.
- a second condensation wall 502 is formed by one of the side walls 37 of the housing 27, hereinafter referred to as the first side wall 371, also implementing the third embodiment, while a third condensation wall 503, formed by a second side wall 372, implements the first embodiment and has no discharge member 79.
- one of the longitudinal end walls 39 hereinafter called the first end wall 391, comprises the various inlet 57 and discharge hose 51 for dielectric fluid while a second wall d 'longitudinal end 392 forms a fourth condensation wall 504 implementing the second embodiment, that is to say that it is devoid of guiding members 67 of the air flow FA.
- the dielectric fluid is brought into the housing 27 by the arrival of dielectric fluid 57. It is then sent into the distribution pipe. 47 of the first circuit 43 then is sprayed in liquid form towards the various battery elements 31 by means of the projection devices 45, as schematically represented by projections 431.
- the dielectric fluid captures the calories emanating from the battery elements 31 and at least part of said sprayed fluid is vaporized under the effect of the temperature to be regulated.
- the vaporized dielectric fluid here represented by arrows 432, then spreads in the gaseous state in the internal volume 200 of the housing.
- the dielectric fluid thus vaporized can then come into contact with the internal face 9 of at least one of the condensation walls 5.
- the vaporized dielectric fluid can come into contact with a first internal face 901 of the first wall of the condenser. condensation 501, formed by the cover 41.
- the cover 41 comprises the second circuit 59, in which the heat transfer fluid circulates.
- This FC heat transfer fluid makes it possible, in addition to the action of the air flow FA outside the housing 27 along the external face of the condensation wall, to maintain this condensation wall at a temperature below that of the vaporized dielectric fluid. Also, when the vaporized dielectric fluid comes into contact with the cooler cover 41, it transfers calories by convection to the heat transfer fluid circulating in the second circuit 59 and goes into the liquid state.
- the heat transfer fluid present in the second circuit 59 mainly has the role of recovering calories by convection from the dielectric fluid in the gaseous state.
- the thermal regulation device can be configured in an operating mode where the heat transfer fluid circulates in the condensation wall and where an air flow FA is pulsed along the external face of this condensation wall, or else in an operating mode where no heat transfer fluid circulates in the wall.
- Such an operating mode implemented when the circulation of the external air flow is sufficient to remove the calories produced, makes it possible to save the energy used to circulate the heat transfer fluid.
- cover 41 extending in an orientation perpendicular to the longitudinal axis 100 of the housing 27, contribute to evacuate by capillary action the dielectric fluid condensed at the level of the first internal face 901 towards the side walls 37 of the base 33, this evacuation being illustrated by arrows 434.
- Such an arrangement thus prevents the formation of a film of liquid dielectric fluid along the inner face 9 of the condensing wall 5.
- At least part of the discharge members 79 included in the first condensation wall 501 can be fluidly connected to at least part of the discharge members 79 included. in at least the second condensation wall 502 and / or in the third condensation wall 503 and / or in the fourth condensation wall 504.
- the discharge members 79 included in the first wall 501 are fluidly connected to at least part of the discharge members 79 of the second wall 502, that is to say the first side wall 371, and to at least part of the discharge members 79 included in the third condensation wall 503 , that is to say the second side wall 372.
- At least part of the discharge members 79 included in the second condensation wall 502 and in the third condensation wall 503 can open into the recovery tank 49, so that the discharge members 79 of the cover 41 are fluidly connected to the recovery tank 49.
- the discharge members 79 can be oriented in different orientations.
- a first subset of discharge members 79 may extend along the orientation, hereinafter called the first orientation, substantially perpendicular to the longitudinal axis 100 of so as to evacuate the liquid dielectric fluid towards the side walls 37, while a second subset of evacuation members 79 extends in a second orientation, substantially parallel to the longitudinal axis 100, so as to evacuate the dielectric fluid to the longitudinal end walls 39.
- the second, third and fourth condensation walls 502, 503, 504 formed by the side walls 37 and the second longitudinal end wall 392 help to promote the condensation of the dielectric fluid vaporized in the internal volume 200 by the 'Intermediate reliefs 11 which are specific to them.
- the dielectric fluid thus liquefied in contact with the condensation walls 5 drips by gravity along the internal faces 9 of said walls 5 to the drain pan.
- recovery 49 partly delimited by the bottom wall 35, then is discharged from the housing 27 via the discharge hose 51.
- At least one sub-assembly of the discharge members 79 can open into the recovery tank 49.
- this is the case of the discharge members 79 included in the second condensation wall 502, that is, that is to say in the first side wall 371 of the base 33, as illustrated in FIG. 5, and of the discharge members 79 included in the fourth condensation wall 504, that is to say the second wall of longitudinal end 392, as schematically shown in dotted lines in Figure 6.
- the first longitudinal end wall 391 is a single wall, that is to say that it does not form a condensation wall 5 and does not include reliefs 11 configured to promote condensation of the vaporized dielectric fluid.
- the first end wall 391 may nevertheless form a condensation wall 5 and, by way of example, include discharge members 79.
- the dielectric fluid passes through a circulation loop comprising the recovery tank 49 of the dielectric fluid in the liquid state, the recirculation pipe 53 of the dielectric fluid equipped with the pump 55, the first circuit 43 of dielectric fluid, which extends into the housing 27, the projection devices 45 spraying the battery cells 31 with dielectric fluid which vaporizes on contact and then liquefies on contact with one of the condensation walls 5 in order to drip by gravity inside the recovery tank 49 and / or to be evacuated along the inner faces 9 of the side walls 37 or the end walls 39.
- the thermal regulation device 1 can comprise a plate 65, or cold plate, here shown in dotted lines, which extends in the internal volume 200 of the housing 27 and at least partially comprises the second circuit 59 of heat transfer fluid.
- the plate 65 may extend opposite one of the condensation walls 5, opposite one of the walls 37, 39, 41, of the housing 27 or between adjacent battery cells 31.
- the thermal regulation device 1 can comprise a plurality of plates 65.
- the plate 65 then functions as a condenser of the vaporized dielectric fluid. Similar to what has been explained when the second circuit 59 is included in one of the condensation walls 5, the cooler, colder, captures the calories of the dielectric fluid which liquefies and then drains to the recovery tank 49 of the housing 27. In parallel, the condensation walls 5, as previously explained, can participate in the condensation of the dielectric fluid in the gaseous state by implementing a heat exchange between said fluid and the outside air flow FA to the housing 27.
- the present invention proposes a thermal regulation assembly comprising at least one device for thermal regulation of at least one electrical or electronic component, the temperature of which must be regulated, said electrical component being capable of releasing from heat during operation.
- the thermal regulation device thus comprises a housing and a circuit of a dielectric fluid intended to be projected onto the electrical component, the dielectric fluid being able to be vaporized by contact with said component.
- the thermal regulation device according to the invention comprises at least one wall for condensing said vaporized dielectric fluid, an external face and / or an internal face of which comprises (s) a plurality of reliefs configured to promote condensation of the dielectric fluid.
- the condensation of the dielectric fluid is favored, both by an increase in an exchange surface which allows better cooling of the wall capable of condensing the dielectric fluid than by the presence of microscopic channels which allow the evacuation of the dielectric fluid in liquid form and which favors the condensation of the fluid which comes to be vaporized by allowing it to take the place, along the condensation wall, of the dielectric fluid already condensed.
- the invention cannot however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configuration and to any technical combination operating such means.
- the number of condensation walls, the walls forming said condensation walls, the presence of a heat transfer fluid circuit and the dimension or shapes of the reliefs can be modified without harming the invention, insofar as the thermal regulation device, in fine, fulfills the same functions as those described in this document.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1915327A FR3105717B1 (fr) | 2019-12-20 | 2019-12-20 | Dispositif de régulation thermique pour un composant électrique |
| PCT/FR2020/052314 WO2021123554A1 (fr) | 2019-12-20 | 2020-12-07 | Dispositif de régulation thermique pour un composant électrique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4078720A1 true EP4078720A1 (fr) | 2022-10-26 |
Family
ID=70008789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20842266.7A Pending EP4078720A1 (fr) | 2019-12-20 | 2020-12-07 | Dispositif de régulation thermique pour un composant électrique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12334528B2 (fr) |
| EP (1) | EP4078720A1 (fr) |
| CN (1) | CN115136388A (fr) |
| FR (1) | FR3105717B1 (fr) |
| WO (1) | WO2021123554A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3129529B1 (fr) * | 2021-11-21 | 2024-04-19 | Valeo Systemes Thermiques | « Dispositif de refroidissement d’un composant électrique et/ou électronique susceptible de dégager de la chaleur en fonctionnement » |
| FR3132984A1 (fr) * | 2022-02-22 | 2023-08-25 | Valeo Systemes Thermiques | Dispositif de régulation thermique d’un élément électrique et/ou électronique à l’aide d’un fluide diélectrique et ensemble comprenant un tel dispositif |
| FR3138261A1 (fr) * | 2022-07-20 | 2024-01-26 | Valeo Systemes Thermiques | Dispositif de régulation thermique, notamment pour véhicule automobile, et ensemble de régulation thermique correspondant |
| CN117818287A (zh) * | 2022-09-29 | 2024-04-05 | 比亚迪股份有限公司 | 热管理系统和具有其的车辆 |
| FR3143847A1 (fr) * | 2022-12-14 | 2024-06-21 | Valeo Equipements Electriques Moteur | Ensemble comportant un convertisseur d’énergie électrique et un dispositif d’échange thermique |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5943211A (en) * | 1997-04-18 | 1999-08-24 | Raytheon Company | Heat spreader system for cooling heat generating components |
| US5907473A (en) * | 1997-04-04 | 1999-05-25 | Raytheon Company | Environmentally isolated enclosure for electronic components |
| CN106784441A (zh) * | 2017-01-11 | 2017-05-31 | 长沙理工大学 | 一种用于电动汽车电池箱的散热箱盖及其应用 |
| US11462786B2 (en) * | 2017-03-09 | 2022-10-04 | Zuta-Car Ltd. | Systems and methods for thermal regulation |
| WO2019077902A1 (fr) * | 2017-10-17 | 2019-04-25 | 株式会社デンソー | Dispositif de refroidissement |
| FR3077683B1 (fr) | 2018-02-05 | 2022-07-01 | Valeo Systemes Thermiques | Dispositif de regulation de temperature d'une batterie a l'aide d'un fluide dielectrique et pack-batterie comprenant un tel dispositif |
| FR3079352B1 (fr) * | 2018-03-23 | 2021-01-22 | Renault Sas | Boitier de systeme de refroidissement de cellules de batterie d’accumulateurs |
| JP7077763B2 (ja) * | 2018-05-16 | 2022-05-31 | 株式会社デンソー | 機器温調装置 |
| CN109244594A (zh) * | 2018-10-17 | 2019-01-18 | 浙江大学 | 一种动力电池热管理系统及动力电池热管理方法 |
-
2019
- 2019-12-20 FR FR1915327A patent/FR3105717B1/fr active Active
-
2020
- 2020-12-07 US US17/786,946 patent/US12334528B2/en active Active
- 2020-12-07 EP EP20842266.7A patent/EP4078720A1/fr active Pending
- 2020-12-07 CN CN202080096998.3A patent/CN115136388A/zh active Pending
- 2020-12-07 WO PCT/FR2020/052314 patent/WO2021123554A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20230387496A1 (en) | 2023-11-30 |
| CN115136388A (zh) | 2022-09-30 |
| FR3105717A1 (fr) | 2021-06-25 |
| FR3105717B1 (fr) | 2022-01-14 |
| WO2021123554A1 (fr) | 2021-06-24 |
| US12334528B2 (en) | 2025-06-17 |
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