EP4673994A1 - Dispositif de regulation thermique pour des composants - Google Patents
Dispositif de regulation thermique pour des composantsInfo
- Publication number
- EP4673994A1 EP4673994A1 EP24706465.2A EP24706465A EP4673994A1 EP 4673994 A1 EP4673994 A1 EP 4673994A1 EP 24706465 A EP24706465 A EP 24706465A EP 4673994 A1 EP4673994 A1 EP 4673994A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat transfer
- transfer fluid
- channel
- placement
- disturbance
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
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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
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- 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 a thermal regulation device for components.
- the present invention relates to a module comprising such a thermal regulation device for components.
- the present invention further relates to a method of assembling such a thermal regulation device.
- battery packs can release a significant amount of heat and therefore be subject to temperature increases that can in some cases cause them to be damaged or even destroyed. Consequently, their cooling is essential in order to keep them in good condition and thus ensure the reliability, autonomy and performance of the vehicle. Furthermore, the operation of battery packs may be less efficient in the event of low temperatures, as the electrical or electronic components equipping these battery packs then need time to warm up before operating at full capacity.
- one or more thermal regulation devices intended to regulate the temperature of the battery packs are implemented to ensure the heating and/or cooling functions of the electrical or electronic components inside these battery packs and thus optimize the operation of the various components.
- thermal regulation devices are generally traversed by a heat transfer fluid which can, depending on requirements, either absorb the heat emitted by each pack- battery in order to cool it or provide heat if the temperature of the battery pack is insufficient for its proper functioning.
- the temperature of the heat transfer fluid flowing through the thermal regulation device changes when the heat transfer fluid is in thermal contact with said components.
- the heat transfer fluid when it arrives with a low temperature in order to cool the components, tends to cool the first components it encounters more than the rest of the components downstream, because the heat transfer fluid has not had time to be heated by the components.
- the present invention aims to overcome this drawback, and in particular to avoid an imbalance in terms of temperature for the first components compared to the rest of the downstream components.
- the invention thus relates to a thermal regulation device for components whose operation is sensitive to temperature, these components being in particular intended for energy storage and possibly being battery cells, in particular for vehicles, said device comprising:
- the slowing cavity having a first fluid passage section which is both larger than a second passage section of the distribution channel at an upstream junction with the slowing cavity, and a third passage section of the distribution channel at a downstream junction with the slowing cavity,
- this placement zone being opposite the heat transfer fluid slowdown cavity so that a component placed in this placement zone can exchange heat with heat transfer fluid.
- the invention makes it possible to reduce the temperature imbalance while promoting the reduction of the pressure loss compared to a channel without a slowing cavity.
- the heat transfer fluid circulation branch is connected to the slowing cavity so that heat transfer fluid having passed through the slowing cavity is distributed in the heat transfer fluid circulation branch.
- the device comprises a heat transfer fluid evacuation channel.
- the circulation branch opens onto the heat transfer fluid evacuation channel.
- the heat transfer fluid circulation branch comprises at least one branch channel connecting to the heat transfer fluid discharge channel.
- the circulation branch comprises at least one rectilinear branch channel connecting to the heat transfer fluid evacuation channel.
- the circulation branch comprises at least one serpentine-shaped branch channel connecting to the heat transfer fluid discharge channel.
- the circulation branch comprises at least two rectilinear branch channels, each branch channel connecting to the heat transfer fluid evacuation channel.
- the branch channel connects to the heat transfer fluid discharge channel.
- the thermal regulation device comprises two plates, namely an upper plate and a lower plate.
- At least one of these plates comprises reliefs, in particular produced by stamping.
- These reliefs can form, for example, the distribution channel, the slowing cavity and the heat transfer fluid circulation branch as well as the heat transfer fluid evacuation channel.
- one of the plates faces the components.
- This plate is defined as being the upper plate and comprises at least one placement zone.
- the other of the plates whose face opposes that of the upper plate is defined as being the lower plate.
- the device comprises two plates, namely an upper plate and a lower plate, the upper plate being the plate facing the components and comprising the placement area and the lower plate being one of the plates whose face opposes that of the upper plate.
- each branch comprises a tray, in particular flat, comprising a plurality of placement zones for receiving components.
- the distribution channel passes under this plate.
- the evacuation channel passes under this plate.
- the distribution channel is connected to a heat transfer fluid inlet.
- the discharge channel is connected to a heat transfer fluid outlet.
- the distribution channel has a general L shape.
- the discharge channel has a general L shape.
- the distribution and discharge channels are mirror symmetrical to each other such that the heat transfer fluid inlet and the heat transfer fluid outlet are symmetrical to each other.
- the distribution and evacuation channels each comprise a flat bordered on each side by a flank.
- the flat part follows the path formed by the distribution and evacuation channels.
- the distribution channel is configured to distribute the heat transfer fluid in a plurality of heat transfer fluid circulation branches.
- these heat transfer fluid circulation branches are parallel to each other.
- these heat transfer fluid circulation branches connect to the distribution channel with a pitch between the heat transfer fluid circulation branches.
- the slowing branches and cavities are spaced apart with a pitch.
- these heat transfer fluid circulation branches connect to the distribution channel with a regular pitch between the heat transfer fluid circulation branches.
- the regular pitch is substantially equal to the width of the circulation branch.
- these heat transfer fluid circulation branches connect to the distribution channel with an irregular pitch between the heat transfer fluid circulation branches.
- the circulation branches have substantially the same width between them.
- At least some of the heat transfer fluid circulation branches furthest upstream in the direction of flow in the distribution channel are each connected to the distribution channel by a slowing cavity.
- the other heat transfer fluid circulation branches are not connected to the distribution channel by a slowing cavity.
- all of the heat transfer fluid circulation branches each have a slowing cavity.
- the circulation branches are connected to each other by at least one crosspiece, in particular a crosspiece in the form of a straight strip.
- the circulation branches comprise at least one pair of branches connected to each other by at least one crosspiece, in particular in the form of a straight strip.
- the two branches are connected to each other by the crosspiece only inside the pair of branches.
- the crosspiece is arranged perpendicular to each traffic branch.
- the crosspiece has a width substantially equal to the width of the traffic branch.
- an opening is formed between the two successive crosspieces.
- the opening has a substantially rectangular perimeter.
- the slowing cavity has a junction with the circulation branch different from the upstream and downstream junctions.
- the slowing cavities have dimensions which decrease from one circulation branch to the other in the direction of flow of heat transfer fluid in the distribution channel.
- the volume of the cavities decreases from one branch to the other in the direction of flow of heat transfer fluid in the distribution channel.
- the dimensions of the cavity of slowdown can be adapted according to the heat flow that one wishes to reduce.
- the slowing cavity has a perimeter, in particular in a substantially rectangular shape, when the slowing cavity is observed along an axis perpendicular to the plane defined by the placement zone opposite said cavity.
- the rectangular perimeter of each slowing cavity is smaller from one cavity to another.
- the slowing cavity has a height that is maximum at its junction with the distribution channel.
- the width of the slowing cavity can also be greater than those of the distribution and branch channels, which makes it possible, where appropriate, to collect the heat from several cells.
- the invention makes it possible to play on the height, significantly, and also on the width to widen the thermal interfaces and reach more cells, which has the consequence of requiring a higher fluid slowing.
- the height in the slowing cavity at the junction with the branch channel is smaller than the height at its junction with the distribution channel.
- the height of the slowing cavity changes to a different height due to the presence of a side of the distribution channel.
- the height in the slowing cavity decreases, in particular by one or more steps.
- the bearings comprise:
- the second step having a height, the second step being defined between and the junction of the branch channel and the slowing cavity.
- the height of the slowing cavity is defined along the axis perpendicular to the plane defined by the placement zone opposite said cavity.
- the slowing cavity is formed locally by a recess in one of the plates forming the device, in particular the plate lower so that at this recess, the height of the slowing cavity measured along the axis perpendicular to the plane defined by the placement zone opposite the slowing cavity is reduced compared to the height of the first level defined between the junction of the distribution channel with the slowing cavity.
- the slowing cavity has dimensions arranged to be opposite at least two placement zones, preferably at least three placement zones.
- the slowing cavities have contours of different shapes relative to each other.
- the device comprises at least two placement zones forming a row of placement zones.
- the device comprises rows of placement areas which are parallel to each other. Each row comprises a plurality of placement areas.
- the rows of placement zones are arranged perpendicularly along an axis defined relative to the greatest length of the distribution channel.
- the device comprises a row of placement zones along the distribution channel.
- the device comprises a row of placement zones along the discharge channel.
- the invention thus also relates to a thermal regulation device for components whose operation is sensitive to temperature, these components being in particular intended for energy storage and possibly being battery cells, in particular for vehicles, said device comprising:
- the collection zones each have a cross section which increases or remains constant when moving from one collection zone to the next in the direction of heat transfer fluid flow, and for at least two consecutive collection zones, the downstream collection zone has a larger cross section than that of the upstream collection zone.
- the collection zones have a cross-section which increases, by increasing the height, as one approaches the outlet, it is possible to maintain a constant exchange coefficient along the flow. To this end, the pressure loss is locally increased. In this case, the pressure gradient increases along the discharge channel.
- the main factor contributing to the pressure difference is the average fluid velocity, which is proportional to the flow rate.
- the section must be increased in the same ratio to remain at iso-velocity.
- each placement zone faces the heat transfer fluid evacuation channel so that a component placed in this placement zone can exchange heat with heat transfer fluid.
- the placement areas are substantially planar.
- the cross-section of these collection zones has a height which increases or remains constant when moving from one collection zone to the next in the direction of flow of the heat transfer fluid, and for at least two consecutive collection zones, the downstream collection zone has a height greater than that of the upstream collection zone, the height being a dimension measured along an axis perpendicular to the location plane.
- At least two consecutive collection zones are spaced apart by a section of the discharge channel having a predetermined length.
- the section of the discharge channel is free of disturbing elements.
- the height between each collection zone increases by a predetermined factor.
- the heat transfer fluid is glycolated water.
- At least one of the collection zones comprises at least one disturbance element.
- At least one of the collection zones is free of any disturbing element.
- At least one of the collection zones comprises a group of disturbance elements comprising at least two disturbance elements.
- At least two of the collection zones each comprise a group of disturbance elements comprising at least two disturbance elements.
- the dimensions of the disturbance elements of the groups of disturbance elements are chosen so that the disturbances in the heat transfer fluid due to these disturbance elements are less and less strong from one group of disturbance elements to another depending on the direction of flow of heat transfer fluid.
- the shape of the disturbance elements of the groups of disturbance elements is chosen so that the disturbances in the heat transfer fluid due to these disturbance elements are less and less strong from one group of disturbance elements to another depending on the direction of flow of the heat transfer fluid.
- the number of disturbance elements of the groups of disturbance elements is chosen so that the disturbances in the heat transfer fluid due to these disturbance elements are less and less strong from one group of disturbance elements to another depending on the direction of flow of the heat transfer fluid.
- the dimensions, shape, and/or number of disturbance elements of the groups of disturbance elements are chosen so that the disturbances in the heat transfer fluid due to these disturbance elements are less and less strong from one group of disturbance elements to another depending on the direction of flow of the heat transfer fluid.
- the disturbance elements of a group of disturbance elements have the same shape among themselves.
- the disturbance elements of a group of disturbance elements have different shapes from each other.
- the disturbance elements of a group of disturbance elements have the same dimensions between them.
- the disturbance elements of a group of disturbance elements have different dimensions between them.
- the disturbance element is dome-shaped, in particular with an elongated base or a circular base.
- the disturbance element may have any other shape, for example a prism or pyramid or other
- these disturbance elements are arranged in an aligned manner, or alternately on either side of a line.
- At least some of the disturbance elements may be arranged in the form of chevron patterns.
- a herringbone pattern causes a concentration of the flow before restriction of the section while a disturbance element in the shape of a round dome only intervenes on the section.
- a smooth channel aims for the least disturbance and therefore the least aggressiveness.
- a herringbone pattern is more aggressive than an elongated dome-shaped disturbance element, which is itself more aggressive than a round dome-shaped disturbance element, which is itself more aggressive than a smooth channel.
- the disturbance elements or the patterns formed by the disturbance elements are of a different nature, in particular are less and less aggressive as one approaches the outlet.
- the dome-shaped disturbance elements are placed closer to the outlet than the herringbones.
- the group of disturbance elements comprises at least one pair of disturbance elements formed by a first disturbance element and a second disturbance element, said first and second disturbance elements extending respectively between a first base and a first crest and between a second base and a second crest, said first crest having an elongated shape along a first straight line and said second crest having an elongated shape along a second straight line, said first straight line intersecting said second crest, and a third straight line parallel to the general direction of flow of the heat transfer fluid, said third straight line passing through the center of the first base intersects the second base.
- the first and second disruption elements are dome-shaped, in particular each disruption element having an elongated base.
- These disruption elements advantageously form a chicane with two closely spaced changes of direction, and the spacing between these two disruption elements in the pair is smaller than the spacing between two such pairs. The closer these disruption elements in the same pair are, the more pronounced the chicane effect will be and therefore the more aggressive said pair will be.
- the aggressiveness of such a pair of disruption elements is less strong than for the chevron pattern but stronger than for the individual round or elongated dome pattern.
- the intersection between the first straight line and the third straight line forms an angle A, which is between 20° and 60°, in particular between 30° and 50°.
- the intersection between the second straight line and the third straight line forms an angle B, which is between 45° and 85°, in particular between 55° and 75°.
- the angles A and B are chosen so as to form a two-part chevron.
- the height of the disturbance element is between 10 to 50% of the height of the evacuation channel, preferably between 20 to 40% of the height of the evacuation channel.
- the invention also relates to a thermal regulation device for components whose operation is sensitive to temperature, these components being in particular intended for energy storage and possibly being battery cells, in particular for vehicles, said device comprising:
- a heat transfer fluid circulation branch comprising a branch channel having an intermediate section located between an upstream section and a downstream section, these upstream and downstream sections passing opposite at least one internal component placement zone;
- this component end placement area being at least partially in thermal contact with: o the intermediate section of the channel in the heat transfer fluid circulation branch; and o the discharge channel; such that a component placed in this component end placement area can exchange heat with heat transfer fluid circulating: o in the intermediate section of the heat transfer fluid circulation branch; and o in the discharge channel; and the intermediate section of the channel in the fluid circulation branch comprises at least one heat transfer fluid flow disturbance element.
- inner placement zone means an area which is remote from the discharge channel, namely that this inner zone is cooled by the branch and not by the discharge channel. Where the placement zones form a row, two “end placement zones” may be provided at the two opposite ends of the row, while the “inner placement zone” is located between these two end placement zones.
- the intermediate section forms a bend in the canal, in particular a 180° bend in the canal.
- the downstream section continues to another 180° channel bend, then the channel ends with a terminal section which includes disturbance elements.
- the bend formed by the intermediate section has a U shape.
- the upstream and downstream sections are straight.
- the channel in the circulation branch has an additional turn such that the fluid flow in the circulation branch completes at least two turns.
- the "extra bend” is located at one end of the branch opposite the bend formed by the intermediate section.
- the canal thus has, for example, a general serpentine shape.
- the end placement zone is opposite the discharge channel. [129] According to one aspect of the invention, the end placement zone is at least partially opposite the intermediate section.
- the area of the portion of the end placement zone, in particular in the form of a strip, which is opposite the intermediate section represents 1% to 20%, preferably 1% to 10%, of the total area of the end placement zone.
- This strip is at least 2 times, or 4 times, or 5 times, or 10 times smaller than the total area of the end placement zone.
- the channel of the heat transfer fluid circulation branch comprises a terminal section at the junction with a collection zone of the evacuation channel, and this terminal section comprises at least one fluid flow disturbance element.
- This terminal section optionally comprises a fluid flow constriction. This constriction makes it possible to adapt the flow rate of fluid circulating in the branch.
- the constriction is preferably achieved by a reduction of the section by a narrowing or by a deformation of two walls facing each other.
- the constriction differs in particular from the disturbance element which can be achieved from a narrowing by the deformation of a single wall.
- the terminal section with fluid flow disturbance elements extends over at least one third, or at least one half of the length of the branch.
- the end placement zone is opposite both the intermediate section, the terminal section and the collection zone of the evacuation channel.
- the collection zone is a portion of the discharge channel.
- the discharge channel is smooth, i.e. free of disturbing elements, outside the collection zone.
- the channel in the branch is smooth, i.e. free of disturbing elements, apart from the intermediate section and the terminal section.
- the intermediate section comprises a plurality of disturbance elements, in particular in the shape of a dome, in particular with an elongated base.
- the intermediate section comprises more disturbance elements than the upstream and downstream sections.
- the invention also relates to a module comprising:
- a plurality of components placed on the placement areas of the thermal regulation device at least one of these placement areas being opposite at least one of: o the heat transfer fluid distribution channel o the heat transfer fluid slowing cavity; o the heat transfer fluid evacuation channel.
- Figure 1 is a schematic bottom view, in perspective, of a module comprising a thermal regulation device according to the invention
- FIG. 2 is a schematic top view, in perspective, of the thermal regulation device according to the invention.
- FIG. 3 is a schematic and partial top view of the thermal regulation device according to the invention.
- Figure 4 is a cross-sectional view of the module along axis A-A of Figure 3,
- Figure 5 is a cross-sectional view of the module along axis B-B of Figure 3,
- FIG. 6 Figure 6 is a cross-sectional view of the module along the CC axis of Figure 3
- Figure 7 is a cross-sectional view of the module along the DD axis of Figure 3
- Figure 8 is a schematic and partial top view of the device, at a collection area remote from the heat transfer fluid outlet of the device,
- Figure 9 is a cross-sectional view of the module at the collection area remote from the heat transfer fluid outlet of the device.
- Figure 10 is a cross-sectional view of the module at the collection area near the heat transfer fluid outlet of the device.
- the z-axis is defined as an axis perpendicular to the plane defined by the placement area.
- the x and y axes are perpendicular to the z-axis so as to form an xyz trihedron.
- the x-axis is, for example, the main extension axis of the distribution channel or the discharge channel.
- the x-axis is parallel to the longest rectilinear portion of the distribution channel or the discharge channel.
- An example of a dimension measured along this x-axis is the width of the retarder cavity.
- the retarder cavities may have the same width between them.
- the y axis is, for example, an axis parallel to the branches extending perpendicular to the main extension axis.
- upstream refers to the side of the device from which the heat transfer fluid is admitted into the device, or to the position of the heat transfer fluid before reaching the “downstream” position.
- upstream will be used to refer to the relative position of the heat transfer fluid closer to a heat transfer fluid inlet or the heat transfer fluid distribution channel.
- downstream refers to the position of the heat transfer fluid after reaching the “upstream” position.
- the term "collection area height” means the maximum height measured in a single collection area. This height is measured along an axis perpendicular to the plane of the placement area to receive a component, between smooth walls of the collection area facing each other. This height is measured in particular at locations in the collection area which are free of any disturbing element.
- two areas are said to be “facing” when these areas overlap when observed along an axis perpendicular to these areas.
- Figure 1 shows a module 2 comprising a thermal regulation device 4 for components 6 whose operation is sensitive to temperature, these components 6 being intended in particular for energy storage and possibly being battery cells 6, in particular for vehicles.
- said device 4 comprises:
- heat transfer fluid circulation branches 100, 102, 104, 106, 108, 110, 112, 114 having substantially the same width between them and parallel to each other in which heat transfer fluid is distributed from the distribution channel 8,
- each comprising a plurality of placement zones 200 for receiving the components 6, said rows being arranged along an axis y and parallel to each other, these placement zones 200 being opposite the heat transfer fluid slowing cavities 10, 12, 14, 16 so that the components 6 placed in these placement zones 200 can exchange heat with the heat transfer fluid.
- Each branch 100, 102, 104, 106, 108, 110, 112, 114 comprises a flat plate 21 comprising a plurality of placement areas 200 for receiving the components 6.
- the eight rows of placement areas 18 are formed on these flat plates 21.
- the device 4 further comprises a heat transfer fluid discharge channel 30.
- the discharge channel 30 is connected to a heat transfer fluid outlet 32.
- the placement zones 200 include the interior placement zones and end placement zones 202, 204.
- the “inner placement zone” 202 means an area which is distant from the evacuation channel 30, namely that this inner zone 202 is cooled by the branches 102, 104, 106, 108, 110, 112 and not by the exhaust channel 30.
- the placement zones 202, 204 form a row, two “end placement zones” 204 may be provided at the two opposite ends of the row, while the “inner placement zone” 202 is located between these two end placement zones 204.
- the distribution and evacuation channels 8, 30 each having a general L shape, are mirror symmetrical to each other so that the heat transfer fluid inlet 9 and the heat transfer fluid outlet 32 are symmetrical to each other.
- the end placement zones 204 are respectively located on the longest straight portion of the distribution channel 8 and on the longest straight portion of the evacuation channel 30.
- the heat transfer fluid circulation branches 100, 102, 104, 106 furthest upstream in the direction of flow in the distribution channel 8 are connected to the slowing-down cavities 10, 12, 14, 16 so that heat transfer fluid having passed through the slowing-down cavities 10, 12, 14, 16 is distributed in the heat transfer fluid circulation branches 100, 102, 104, 106 which open into the heat transfer fluid discharge channel 30.
- the other heat transfer fluid circulation branches 108, 110, 112, 114 are not connected to the distribution channel 8 by a circulation cavity.
- the slowing-down cavities 10, 12, 14, 16 have a first fluid passage section S1 which is both larger than a second passage section S2 of the distribution channel 8 at an upstream junction 22 with the slowing-down cavities 10, 12, 14, 16 and a third passage section S3 of the distribution channel 8 at a downstream junction 24 with the slowing-down cavities 10, 12, 14, 16.
- the heat transfer fluid passing through the slowing down cavities 10, 12, 14, 16 is slowed down.
- the reduction in the speed of the heat transfer fluid reduces the heat exchange in particular compared to the case where the heat transfer fluid would not be slowed down in the absence of such slowing down cavities 10, 12, 14, 16.
- the heat transfer fluid circulation branches 100, 102, 104, 106, 108, 110, 112, 114 connect to the distribution channel 40 with a regular pitch between the heat transfer fluid circulation branches 100, 102, 104, 106, 108, 110, 112, 114, said regular pitch being substantially equal to the width of the circulation branch 100, 102, 104, 106, 108, 110, 112, 114 measured along the x axis.
- branches 100, 102, 104, 106 and slowing down cavities 10, 12, 14, 16 are spaced apart with the regular pitch.
- each heat transfer fluid circulation branch 100, 102, 104, 106, 108, 110, 112, 114 comprises a serpentine-shaped branch channel 40.
- the branch channel 40 has a passage section S4 connecting to the heat transfer fluid discharge channel 40.
- the slowing cavities 10, 12, 14, 16 each have a junction 25 with the circulation branches 100, 102, 104, 106 different from the upstream and downstream junctions 22, 24.
- the junction 25 connects to the branch channel 40 having the passage section S4.
- the thermal regulation device 4 comprises two plates 50, 52, namely an upper plate 50 and a lower plate 52.
- These plates 50, 52 comprise reliefs, in particular produced by stamping. These reliefs can form, for example, the distribution channel 8, the slowing cavities 10, 12, 14, 16 and the heat transfer fluid circulation branches 100, 102, 104, 106, 108, 110, 112, 114 as well as the heat transfer fluid evacuation channel 30.
- the upper plate 50 faces the components 6 and has a plurality of placement areas 200.
- the lower plate 52 is defined as the state of the plate whose face opposes that of the upper plate 50.
- the two plates 50, 52 can be welded or stamped so as to form the thermal regulation device 4.
- the eight heat transfer fluid circulation branches 100, 102, 104, 106, 108, 110, 112, 114 comprise four pairs of branches connected to each other by four crosspieces 60 in the form of a rectilinear strip and having a width substantially equal to the width of each circulation branch 100, 102, 104, 106, 108, 110, 1 12, 114, and arranged perpendicular to each circulation branch 100, 102, 104, 106, 108, 1 10, 112, 114.
- These eight branches 100, 102, 104, 106, 108, 110, 1 12, 1 14 are connected to each other by the crosspieces 60 only inside each pair of branches.
- An opening 70 having a substantially rectangular perimeter is formed between the two successive crosspieces 60.
- the slowing cavities 10, 12, 14, 16 have dimensions which decrease from one circulation branch 100, 102, 104, 106 to the other in the direction of flow of heat transfer fluid in the distribution channel 8.
- the volume of the cavities 10, 12, 14, 16 decreases from one branch 100, 102, 104, 106 to the other in the direction of flow of heat transfer fluid in the distribution channel 8.
- the dimensions of the slowing down cavities 10, 12, 14, 16 can be adapted according to the heat flow that it is desired to reduce.
- the first slowing cavity 100 has dimensions arranged to be opposite three placement zones 200.
- the second slowing cavity 102 has dimensions arranged to be opposite between two and three placement zones 200.
- the third slowing cavity 104 has dimensions arranged to be opposite two placement zones 200.
- the fourth slowing cavity 106 has dimensions arranged to be opposite one and a half placement zones 200.
- the distribution and evacuation channels 9, 30 each comprise a flat part 80 bordered on each side by a flank 82.
- the slowing down cavities 10, 12, 14, 16 have a substantially rectangular shaped perimeter, when the slowing down cavities are observed along the z axis.
- the first slowing cavity 10 is taken as an example. However, the characteristics of the first slowing cavity 10 are also valid for the other slowing cavities 12, 14, 16. [201] As illustrated in Figures 5 and 7, the slowing cavity 10 has a height hd which is maximum at its junction 22, 24 with the distribution channel 8. The height in the slowing cavities hb at the junction with the branch channel 40 is smaller than the height hd at its junction with the distribution channel 8.
- the first step 84 having a height hintl is defined between the junction of the distribution channel 8 with the slowing down cavities 10, 12, 14, 16 and the second step 86 having a height hint2 is defined between and the junction of the branch channel 40 and the slowing down cavities 10, 12, 14, 16.
- the slowing-down cavities 10, 12, 14, 16 are formed locally by recesses 90 of one of the plates forming the device 4, in particular of the lower plate 52, so that at the level of these recesses 90, the height hc of the slowing-down cavities 10, 12, 14, 16 measured along the z axis are reduced relative to the height hint of the first level 84 defined between the junction of the distribution channel 8 with the slowing-down cavities 10, 12, 14, 16.
- the heights hd, hb, hc, hintl, hint2 are defined along the z axis.
- the thermal regulation device 4 comprises:
- the seven heat transfer fluid circulation branches 100, 102, 104, 106, 108, 110, 112 each comprising the branch channel 40 having an intermediate section 120 located between an upstream section 130 and a downstream section 140 which are rectilinear, these upstream and downstream sections 130, 140 passing opposite at least one internal component placement zone 202;
- this component end placement area 204 being at least partially in thermal contact with: o the intermediate section 120 of the channel 40 in the heat transfer fluid circulation branches 102, 104, 106, 108, 110, 112; and o the evacuation channel 30; such that a component 6 placed in this component end placement area 204 can exchange heat with circulating heat transfer fluid: o in the intermediate section 120 of the heat transfer fluid circulation branches 102, 104, 106, 108, 1 10, 1 12; and o in the discharge channel 30; and the intermediate section of the channel 120 in the fluid circulation branches 102, 104, 106, 108, 1 10, 112 comprises heat transfer fluid flow disturbance elements 150 in the form of an elongated base dome.
- the end placement zone 204 faces the discharge channel 30 and is at least partially faces the intermediate section 120.
- the intermediate section 120 forms a 180° bend in the canal with a U shape.
- the downstream section 140 extends to another 180° channel bend, then the channel 40 ends with a terminal section 160 which includes disturbance elements 152.
- the channel 40 has an additional bend 170 located at one end of the branches 102, 104, 106, 108, 110, 112, opposite the bend formed by the intermediate section 120 so that the flow of fluid in the circulation branches 102, 104, 106, 108, 110, 112 completes two bends.
- the area of the portion of the end placement zone 204 in the form of a strip 206 which faces the intermediate section represents 1% to 20%, preferably 1% to 10%, of the total area of the end placement zone 204. This strip 206 is at least 10 times smaller than the total area of the end placement zone.
- the terminal section 160 is in junction with a collection zone of the evacuation channel 180 which is a portion of the evacuation channel 30, and this terminal section 160 comprises fluid flow disturbance elements 154.
- the terminal section 160 with fluid flow disturbance elements 154 extends over at least half the length of the branch 1.
- the end placement zone 204 is opposite both the intermediate section 120, the terminal section 160 and the collection zone 180 of the evacuation channel 30.
- the discharge channel 30 is smooth, i.e. free of disturbing elements 154, outside the collection zone 160.
- the channel 40 in the branches 100, 102, 104, 106, 108, 110, 112 is smooth, namely free of disturbance elements 152, apart from the intermediate section 120 and the terminal section 160.
- the device 4 comprises:
- the collection zones 180 each have a cross-section St which increases or remains constant when moving from one collection zone 180 to the next in the direction of heat transfer fluid flow, and for at least two consecutive collection zones 180, the downstream collection zone has a larger cross-section St than that of the upstream collection zone.
- the collection zones 180 have a cross-section which increases, by increasing the height, as one approaches the outlet, it is possible to maintain a constant exchange coefficient along the flow. To this end, the pressure loss is locally increased. In this case, the pressure gradient increases along the discharge channel 30.
- the main factor contributing to the pressure difference is the average fluid velocity, which is proportional to the flow rate.
- the section St must be increased in the same ratio to remain at iso-velocity.
- the cross sections Sc of the collection zones 180 corresponding respectively to the branches 112 and 102 respectively have a height hu and a height hd.
- the height of the collection zone 180 increases when moving from a collection zone 180 upstream of the branch 112 to the collection zone 180 downstream of the branch 102 in the direction of flow of the heat transfer fluid.
- the collection zone 180 downstream of the branch 102 has a height hd greater than the height hu of the collection zone 180 upstream, the heights hd and hu being dimensions measured along the z axis.
- the width of the collection zone 180 measured along the x axis is substantially equal to the dimension of the branches measured along the same x axis.
- the two consecutive collection zones 180 are spaced apart by a section of the discharge channel 182 having a predetermined length. Each section of the discharge channel 182 is free of disturbance elements 154.
- each collection zone 180 increases by a predetermined factor. For example, following the direction of flow, each time a channel adds its flow into the collection zone, then the next passage section increases by a predetermined value, for example by 1 mm in height.
- the collection zones 180 have between four and six disturbance elements 154.
- These disturbance elements 154 are dome-shaped with an elongated base or with a circular base. These disturbance elements 154 may have any other shape, for example a prism or pyramid or other.
- These disturbance elements 154 can be arranged in different ways depending on the disturbances that one wishes to generate. [233] For example, these disturbance elements 154 are arranged in an aligned manner, or alternately on either side of a line.
- the height of the disturbance elements 154 measured along the z axis is between 10 to 50% of the height of the discharge channel.
- the collection zone 180 receiving the heat transfer fluid coming from the first slowing down cavity 10 is free of any disturbing element.
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2301879A FR3146345B1 (fr) | 2023-03-01 | 2023-03-01 | Dispositif de régulation thermique pour des composants |
| PCT/EP2024/054725 WO2024179945A1 (fr) | 2023-03-01 | 2024-02-23 | Dispositif de regulation thermique pour des composants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4673994A1 true EP4673994A1 (fr) | 2026-01-07 |
Family
ID=86329607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24706465.2A Pending EP4673994A1 (fr) | 2023-03-01 | 2024-02-23 | Dispositif de regulation thermique pour des composants |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4673994A1 (fr) |
| CN (1) | CN120752783A (fr) |
| FR (1) | FR3146345B1 (fr) |
| WO (1) | WO2024179945A1 (fr) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7237600B2 (en) * | 2005-01-26 | 2007-07-03 | Edward Joseph Tippmann | Support surface for heating or cooling food articles and method of making the same |
| DE102009013651A1 (de) * | 2009-03-17 | 2010-09-23 | Continental Automotive Gmbh | Kühlsystem für einen Energiespeicher aus Batteriezellen und Verfahren zur Steuerung einer aktiven Kühlung |
| DE102013208996A1 (de) * | 2013-05-15 | 2014-11-20 | Volkswagen Aktiengesellschaft | Temperiervorrichtung, Batteriepack, Wärmetauschelement, Zu- und/oder Ableitung und Herstellungsverfahren dafür |
| CA2934820A1 (fr) * | 2014-01-30 | 2015-08-06 | Dana Canada Corporation | Echangeur thermique a debit equilibre pour gestion thermique de batterie |
| DE102014219387A1 (de) * | 2014-09-25 | 2016-03-31 | Mahle International Gmbh | Sammler und zugehöriger Wärmeübertrager |
| DE102014114024A1 (de) * | 2014-09-26 | 2016-03-31 | Obrist Technologies Gmbh | Wärmetauscher |
| FR3033037B1 (fr) * | 2015-02-25 | 2018-09-14 | Valeo Systemes Thermiques | Dispositif de gestion thermique d'une unite de reserve d'energie |
| DE102017109708A1 (de) * | 2017-05-05 | 2018-11-08 | Benteler Automobiltechnik Gmbh | Kühlanordnung, Fluidsammler für eine Kühlanordnung sowie Verfahren zur Herstellung eines Fluidsammlers |
| DE102017116984B4 (de) * | 2017-07-27 | 2022-07-14 | Lion Smart Gmbh | Temperiervorrichtung für eine Temperierung eines Batteriesystems sowie Batteriesystem |
| JP7033730B2 (ja) * | 2018-07-11 | 2022-03-11 | パナソニックIpマネジメント株式会社 | 冷却装置、電池温度調整システム及び車両 |
| CN108987849A (zh) * | 2018-07-25 | 2018-12-11 | 扬州三丰新能源科技有限公司 | 一种冷媒直冷却板 |
| DE102018216708A1 (de) * | 2018-09-28 | 2020-04-02 | Robert Bosch Gmbh | Kühlplatte zur Temperierung zumindest einer Batteriezelle und Batteriesystem |
-
2023
- 2023-03-01 FR FR2301879A patent/FR3146345B1/fr active Active
-
2024
- 2024-02-23 WO PCT/EP2024/054725 patent/WO2024179945A1/fr not_active Ceased
- 2024-02-23 CN CN202480015591.1A patent/CN120752783A/zh active Pending
- 2024-02-23 EP EP24706465.2A patent/EP4673994A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120752783A (zh) | 2025-10-03 |
| FR3146345B1 (fr) | 2026-01-23 |
| WO2024179945A1 (fr) | 2024-09-06 |
| FR3146345A1 (fr) | 2024-09-06 |
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