WO2023078810A1 - Dispositif de régulation thermique, notamment de refroidissement - Google Patents
Dispositif de régulation thermique, notamment de refroidissement Download PDFInfo
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- WO2023078810A1 WO2023078810A1 PCT/EP2022/080306 EP2022080306W WO2023078810A1 WO 2023078810 A1 WO2023078810 A1 WO 2023078810A1 EP 2022080306 W EP2022080306 W EP 2022080306W WO 2023078810 A1 WO2023078810 A1 WO 2023078810A1
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- WO
- WIPO (PCT)
- Prior art keywords
- channels
- section
- zone
- densified
- under
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims description 13
- 239000012530 fluid Substances 0.000 claims abstract description 78
- 239000013529 heat transfer fluid Substances 0.000 claims abstract description 14
- 230000004087 circulation Effects 0.000 claims description 26
- 239000003507 refrigerant Substances 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 4
- 239000002826 coolant Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- 230000001186 cumulative effect Effects 0.000 description 5
- 238000013021 overheating Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 1
Classifications
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- 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
- 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
- F28D1/03—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 plate-like or laminated conduits
- F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
- F28D1/035—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the conduits
-
- 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
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
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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
- H01M10/62—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
- H01M10/6554—Rods or plates
-
- 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
-
- 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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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 device for thermal regulation, in particular cooling, in particular for an electrical component capable of releasing heat during its operation, in particular a device for cooling at least one battery or vehicle battery cells, for example a motor vehicle.
- the vehicle can be land, sea or air.
- the invention relates in particular to plate heat exchangers intended for the circulation of a refrigerant fluid allowing the batteries of hybrid or electric vehicles to be cooled.
- the invention aims to improve the temperature uniformity of the thermal regulation device, and to avoid undesirable overheating zones.
- the invention thus proposes a device for thermal regulation, in particular cooling, for an electrical component capable of releasing heat during its operation, in particular for an electrical energy storage module, this device comprising an upper plate and a plate lower plate assembled with the upper plate to together form a plurality of circulation channels for a heat transfer fluid, in particular a refrigerant fluid, device in which the channels extend, successively in the direction of circulation of the heat transfer fluid, in a go zone in which the channels communicate with one or more fluid inlets, a turnaround zone and a return zone in which the channels communicate with one or more fluid outlets, the turnaround zone connecting the forward and return zones so that at the at least some of the channels have a substantially U-shape in this reversal zone, the device being characterized in that the outward zone has, successively according to the direction of circulation of the heat transfer fluid, an under-densified section and a densified section, the number (Nsd) of channels in the under-densified section being strictly less than the number (Nd) of channels in the den
- the invention makes it possible to optimize the temperature gradients of the assembled plates via a particular arrangement of cooling channels in the forward zone, the reversal zone and the return zone. This layout is optimized for one or more U-shaped circulations.
- the invention allows good temperature homogeneity of the device.
- this under-densified section makes it possible, with the greater fluid velocity and the liquid phase, to improve overall heat exchanges in the under-densified section.
- this under-densified section makes it possible to cool a neighboring region exposed to the risk of overheating located at the end of the U-shaped circulation.
- the under-densified section is arranged between the fluid inlet, or inlets, and the densified section.
- the number (Nd) of channels in the densified section is at least 1.5 times greater than the number (Nsd) of channels in the under-densified section.
- the number (Nd) of channels in the densified section (28) is in particular twice the number (Nsd) of channels in the under-densified section (27).
- the number (Nd) is equal to 12 and the number (Nsd) of channels in the under-densified section is equal to 6.
- the number (Nd) is equal to 6 and the number (Nsd) of channels in the under-densified section is equal to 3.
- the number (Nd) is equal to 3 and the number (Nsd) of channels in the under-densified section is equal to 2.
- the hydraulic diameter of the channels remains identical in the under-densified section and in the densified section.
- the channels in the under-densified section are parallel to each other and are in particular of rectilinear shape.
- the channels in the densified section are parallel to each other and are in particular rectilinear in shape.
- the channels in the under-densified section are parallel to the channels in the densified section.
- at least one of the channels of the under-densified section, in particular each channel is connected to two channels of the densified section.
- the number (Nd) of channels in the densified section is thus twice the number (Nsd) associated with the under-densified section.
- the under-densified section extends over a length, measured according to the direction of fluid circulation, which is greater than 10%, or 20%, of the length total channels in the forward zone.
- the under-densified section extends over a length, measured according to the direction of fluid circulation, which is less than 50% of the total length of the channels in the go zone.
- the under-densified section extends over a length, measured in the direction of fluid circulation, which is substantially equal to 25% of the total length of the channels in the outward zone.
- the channels in the under-densified section are spaced from each other by a constant pitch.
- the channels in the densified section are spaced from each other at a constant pitch.
- the outward zone comprises a junction section between the under-densified section and the densified section.
- this junction section has ramifications of channels, ramifications which make it possible to increase the number of channels between the under-densified section and the densified section.
- each channel of the under-densified section connects to two channels, or more channels, of the densified section via a node present in the junction section.
- the branch node In the case of a channel dividing into two channels, the branch node is part of a Y or T formed by the channels. [37] In the junction section, the branching nodes have for example a spacing relative to a geometric line transverse to the longitudinal direction of the channels, spacing which is different between neighboring nodes.
- the branching nodes are arranged in two rows so that the nodes of one row alternate with the nodes of the other row.
- the two rows are for example spaced apart by a distance of between 5 mm and 100 mm.
- This arrangement of the nodes makes it possible to smooth temperature gradients in this junction section. This is particularly advantageous when the battery cells are arranged perpendicular to the direction of fluid flow.
- knots are possible, for example these knots are arranged along a line which is oblique with respect to the aforementioned transverse line.
- the outward and return zones have the same length.
- the channels of the under-densified section communicate with one or more fluid inlet channels.
- each fluid inlet channel is connected to three channels of the under-densified section, in particular by making an angle strictly greater than 90° or by forming a rounded elbow .
- these two fluid inlet channels communicate with a common fluid inlet.
- these inlet channels are arranged offset from the locations which receive the electrical components to be cooled.
- these input channels are not opposite the components to be cooled.
- the channels of the outward and return zones are arranged opposite the components to be cooled.
- the components to be cooled are battery cells which generally extend perpendicular to the direction of fluid flow, in the under-densified and densified sections of the forward zone and in the return zone.
- these battery cells are arranged in rows, in particular parallel rows.
- each row comprises, for example, two battery cells.
- these rows are placed perpendicular to the outward and return zones.
- the battery cells are arranged in 30 rows of two cells, i.e. a total of 60 cells to be cooled.
- the components to be cooled are battery cells that extend generally parallel to the direction of fluid flow, in the under-densified and densified sections of the forward zone and in the return zone.
- the number (Nr) of channels in the return zone is lower than the number of channels in the under-densified section (Nsd).
- the number (Nr) of channels in the return zone is 4, the number (Nsd) in the under-densified section is 6 and the number (Nd) of channels in the densified section is 12.
- the number (Nr) of channels in the return zone is 2
- the number (Nsd) in the under-densified section is 3
- the number (Nd) of channels in the densified section is 6.
- the channels in the return zone are rectilinear in shape and are parallel to each other, in particular with a regular pitch between them.
- the under-densified section is placed next to a terminal section of the return zone so that the under-densified section can extract calories released in the terminal section of the return area. [60] Thus it is possible to cool this terminal section, which may present risks of undesirable overheating.
- the channels of the return zone connect to one or more fluid outlet channels.
- some of the channels of the return zone connect to a common output channel.
- the terminal section of the return zone is adjacent to the exit channels.
- these output channels are arranged offset from the locations which receive the electrical components to be cooled.
- the fluid inlet and outlet channels are arranged on the same side of the plates.
- the width of the forward zone is greater than the width of the return zone, the width being measured in a direction transverse to the channels in these zones.
- the turnaround zone comprises at least one transverse channel which connects channels in the forward zone to channels in the return zone.
- this or these transverse channels have a direction perpendicular to the rectilinear channels of the outward and return zones.
- the pitch between the transverse channels can be constant or non-constant.
- the transverse channel has a shorter length than the cumulative width of the outward and return zones, the length of the transverse channel and this cumulative width being measured in the same direction, for example a direction parallel to a short side of the plates.
- the ratio between the width (W1) of the outward zone and the distance (Dr1) which is measured between an edge of the plates and the proximal end of the transverse channel according to a direction parallel to the transverse channel is between 2 and 4.
- this transverse channel for which this ratio is calculated is the outermost channel.
- this channel connects the outermost channel of the forward zone to the outermost channel of the return zone.
- the ratio between the width (W2) of the return zone and the distance (Dr2) which is measured between an edge of the plates and the proximal end of the transverse channel according to a direction parallel to the transverse channel is between 0.5 and 2.
- the distance Dr2 is equal to the distance Dr1.
- the distance Dr2 is strictly greater than Dr1.
- At least some of the channels in the forward zone connect to transverse channels via oblique forward arms.
- three channels from the outward zone connect to one of the transverse channels via three respective oblique arms.
- a group of three channels connects to one of the transverse channels.
- transverse channels each see the connection of a group of channels from the outward zone, for example groups of three channels.
- the outermost oblique arm has a longitudinal extension (X1) measured along the longitudinal direction of the channels of the outward zone.
- X1 longitudinal extension measured along the longitudinal direction of the channels of the outward zone.
- these transverse channels are each connected to a single oblique arm.
- transverse channels are equal in number to the number of channels in the return zone.
- the outermost return oblique arm has a longitudinal extension (X2) measured in the longitudinal direction of the outward zone channels.
- the outward and return oblique arms, with the outermost transverse channel form a trapezoidal circumference.
- these oblique arms and the transverse channels define the U-shape of the flow in the reversal zone.
- the longitudinal extension (X1) and the longitudinal extension (X2) are equal.
- the device has slots for receiving the components to be cooled, in particular battery cells.
- These slots have substantially the shape of rectangles, in particular for placing battery cells there.
- Each battery cell location, in the rollover zone, is located at least partially in the gap between two neighboring transverse channels.
- each battery cell mainly sees the gap between two transverse channels, not the entire width of a transverse channel.
- the transverse channel straddles two neighboring battery cell locations. [95] Thus this transverse channel which is relatively little vis-à-vis the battery cells extracts fewer calories released by these cells.
- the thermal regulation device has a single fluid flow path, this path having a U-shape between a fluid inlet and a fluid outlet, this path being formed by the channels of the forward zone, the reversal zone and the return zone.
- the thermal control device has multiple fluid flow paths, each path having a U-shape between a fluid inlet and a fluid outlet, each path being formed by the channels of one of the forward zones, one of the turnaround zones and one of the return zones.
- the thermal control device has two U-shaped flow paths sharing common fluid inlets and outlets.
- the U-shaped paths have mirror symmetry with respect to each other.
- the axis of mirror symmetry is parallel to the branches of the U.
- the axis of mirror symmetry is perpendicular to the branches of the U.
- the thermal regulation device has four U-shaped flow paths, in particular sharing two common fluid inlets and one outlet.
- these four U's are arranged at the four corners of a rectangle or a square.
- the invention makes it possible to have a fluid circulation speed which is increased in the channels of the under-densified section, because the total fluid passage section is reduced due to the limited number of channels.
- the channels in the forward zone are under-densified so as to increase the flow velocity and the exchange coefficients under the first rows of cells.
- Another subject of the invention is a device for thermal regulation, in particular cooling, for an electrical component capable of releasing heat during its operation, in particular for an electrical energy storage module, this device comprising a plate upper plate and a lower plate assembled with the upper plate to form together a plurality of circulation channels for a heat transfer fluid, in particular a refrigerant fluid, device in which the channels extend, successively in the direction of circulation of the heat transfer fluid, in a go zone in which the channels communicate with one or more fluid inlets, a turnaround zone and a return zone in which the channels communicate with one or more fluid outlets, the turnaround zone connecting the go and return zones so as to that at least some of the channels have a substantially U-shape in this turning zone, this device comprising slots for the components to be cooled, for example of rectangular shape, device in which the turning zone comprises at least one transverse channel connecting at least one channel of the forward zone to a channel of the return zone, this transverse channel straddling two neighboring locations which are provided to each receive, for example, a battery cell
- these slots are for example arranged in parallel rows.
- the transverse channel has a shorter length than the cumulative width of the outward and return zones, the length of the transverse channel and this cumulative width being measured in the same direction, for example a direction parallel to a short side of the plates.
- the ratio between the width (L1) of the outward zone and the distance (Dr1) which is measured between an edge of the plates and the proximal end of the transverse channel according to a direction parallel to the transverse channel is between 2 and 4.
- this transverse channel for which the ratio is calculated is the outermost channel.
- this channel connects the outermost channel of the forward zone to the outermost channel of the return zone.
- the ratio between the width (W2) of the return zone and the distance (Dr2) which is measured between an edge of the plates and the proximal end of the transverse channel according to a direction parallel to the transverse channel is between 0.5 and 2.
- At least some of the channels in the forward zone connect to transverse channels via oblique forward arms.
- three channels from the outward zone connect to one of the transverse channels via three respective oblique arms.
- a group of three channels is connected to one of the transverse channels.
- transverse channels each see the connection of a group of channels from the outward zone, for example groups of three channels.
- the outermost oblique arm has a longitudinal extension (X1) measured along the longitudinal direction of the outward zone channels.
- At least some of the channels of the return zone connect to transverse channels via return oblique arms.
- the refrigerant is chosen from R134a, R1234yf or R744 refrigerants.
- Another subject of the invention is a system comprising an electrical component capable of releasing heat during its operation, in particular for an electrical energy storage module, and a cooling device described above, arranged to cooling the component, this component, in particular battery cells, being in thermal contact with the upper plate of the cooling device.
- FIG. 1 There is shown in [Figure 1] a system 1, known from the state of the art, comprising a set of battery cells 2 to be cooled, for example rows in a plurality of parallel rows 3, and a regulating device 10 arranged to cool the cells 2, which are in thermal contact with an upper plate of the cooling device 10, as explained below.
- the thermal regulation device 10 comprises an upper plate 11, a lower plate 12 assembled with the upper plate 11 to together form a plurality of circulation channels 14 for a refrigerant, in particular a fluid selected from R134a refrigerants, R1234yf or R744.
- the channels 14 extend between a common inlet 7 and a common fluid outlet 8.
- a flange 9 can be connected to this input 7 and output 8 to provide connections.
- the device 20 comprises an upper plate 11 and a lower plate 12 assembled with the upper plate 11 to together form a plurality of circulation channels 21 for the coolant.
- the channels 21 extend, successively according to the direction of circulation of the heat transfer fluid:
- the turnaround zone 24 connects the forward 22 and return 25 zones so that at least some of the channels 21 have a substantially U-shape in this turnaround zone 24.
- the go zone 22 has, successively in the direction F1 of circulation of heat transfer fluid, an under-densified section 27 and a densified section 28, the number Nsd of channels 21 in the under-densified section densified 27 being strictly less than the number Nd of channels in the densified section.
- the invention makes it possible to have a fluid circulation speed which is increased in the channels 21 of the under-densified section 27, because the total fluid passage section is reduced due to the limited number of channels.
- the flow rate of the fluid increases in connection with the fact that the fluid is in the liquid state (because the fluid is still close to the inlet and is not yet sufficiently heated to pass to the gaseous state) makes it possible to have a sufficiently high heat exchange in this under-densified section 27.
- the channels 21 in the forward zone 27 are under-densified so as to increase the flow velocity and the exchange coefficients under the first rows of cells.
- the two cells of each row 3 are arranged in two columns 38 as shown in Figure 4.
- the cells are denoted CELL 1, CELL 2...
- the under-densified section 27 is arranged between the fluid inlet 7 and the densified section 28.
- the number Nd of channels 21 in the densified section 28 is twice the number Nsd of channels 21 in the under-densified section 27.
- the number Nd is equal to 12 and the number Nsd of channels in the under-densified section is equal to 6.
- the number Nd is equal to 6 and the number Ns) of channels in the under-densified section is equal to 3.
- the channels 21 in the under-densified section 27 are parallel to each other and are rectilinear in shape.
- the channels 21 in the densified section 28 are parallel to each other and are rectilinear in shape.
- the channels 21 in the under-densified section 27 are parallel to the channels in the densified section 28. [160] Each channel 21 of the under-densified section 27 connects to two channels 21 of the densified section 28.
- the under-densified section 27 extends over a length L1, measured in the direction F1 of fluid circulation, which is greater than 10%, or 20%, of the total length L10 of the channels in the go zone 22, and smaller than 50% of this total length L10.
- the under-densified section 27 extends over a length L1, measured in the direction of fluid circulation, which is substantially equal to 25% of the total length L10 of the channels in the outward zone 22.
- the channels 21 in the under-densified section 27 are spaced from each other by a constant pitch DYA.
- the channels 21 in the densified section 28 are spaced from each other by a constant pitch DY.
- the DYA step is thus larger than the DY step due to the increased number of channels.
- the outward zone 22 comprises a junction section 30 between the under-densified section 27 and the densified section 28.
- This junction section 30 has ramifications of channels, ramifications which make it possible to increase the number of channels between the under-densified section 27 and the densified section 28.
- each channel 21 of the under-densified section 27 connects to two channels of the densified section 28 via a node 31 present in the junction section 30.
- branching node 31 is part of a Y formed by the channels.
- the branching nodes 31 have a spacing relative to a geometric line LT transverse to the longitudinal direction of the channels 21, spacing which is different between neighboring nodes. [172] In the example described, the branch nodes 31 are arranged in two rows 33 and 34 so that the nodes 31 of one row alternate with the nodes of the other row.
- the two rows 33 and 34 of knots are for example spaced apart by a distance of between 5 mm and 100 mm.
- This arrangement of the nodes 31 makes it possible to smooth temperature gradients in this junction section. This is particularly advantageous when the battery cells are arranged perpendicular to the direction of fluid flow.
- nodes 31 are arranged along a line which is oblique with respect to the aforementioned transverse line.
- the channels 21 of the under-densified section 27 communicate with several channels 23 of the fluid inlet supply.
- each fluid supply channel 23 is connected to three channels 21 of the under-densified section 27, making an angle strictly greater than 90° as illustrated in the figure 3.
- These power channels 23 are arranged offset from the slots that receive the battery cells.
- the channels 21 of the forward 22 and return 25 zones are arranged opposite the cells 2 to be cooled.
- the battery cells are arranged in 30 rows of two cells, ie a total of 60 cells to be cooled.
- the number Nr of channels in the return zone 25 is lower than the number Nsd of channels in the under-densified section 27.
- the number Nr of channels in the return zone 25 is 4, the number Nsd in the under-densified section 27 is 6 and the number Nd of channels in the densified section 28 is 12.
- the number Nr of channels in the return zone 25 is 2
- the number Nsd in the under-densified section 27 is 3
- the number Nd of channels in the densified section 28 is 6.
- the channels 21 in the return zone 25 are rectilinear in shape and are parallel to each other, with a regular pitch between them here equal to DY, namely the pitch of the channels in the densified section 29 of the outward zone 22.
- the under-densified section 27 is placed next to a terminal section 35 of the return zone 25 so that the under-densified section 27 can extract calories released in the terminal section 35 of the return area.
- the channels of the return zone 25 connect to several fluid outlet channels 36.
- the terminal section 35 of the return zone 25 is adjacent to the exit channels 36.
- FIG. 2 and 3 illustrate different configurations of inlet 23 and outlet 36 channels. It is preferable to have the channels oriented obliquely as shown in Figure 3, for better flow.
- the width W1 of the forward zone 22 is greater than the width W2 of the return zone 25, the width being measured in a direction LT transverse to the channels in these zones.
- the reversal zone 24 comprises transverse channels 39 which connect the channels of the go zone 22 to the channels of the return zone 25.
- transverse channels 39 have a direction LT perpendicular to the rectilinear channels of the go 22 and return 25 zones.
- Each transverse channel 39 has a shorter length than the cumulative width of the outward and return zones W1 and W2.
- the ratio between the width W1 of the go zone 22 and the distance Dr1 which is measured between an edge 40 of the plates 11, 12 and the proximal end of the transverse channel 39 in the direction LT, is between 2 and 4 .
- This transverse channel 39 for which the ratio is calculated is the outermost channel. In other words, this channel connects the outermost channel of the outward zone 22 to the outermost channel of the return zone 25.
- the ratio between the width W2 of the return zone 25 and the distance Dr2 which is measured between an edge 41 of the plates and the proximal end of the transverse channel 39 in the direction LT, is between 0.5 and 2.
- the distance Dr2 is equal to the distance Dr1.
- the distance Dr2 is strictly greater than Dr1.
- Forward zone channels 22 connect to transverse channels 39 via forward slant arms 44.
- three channels from the go zone 22 are connected to one of the transverse channels 39 via three respective oblique arms 44.
- a group of three channels 21 is connected to one of the transverse channels 39.
- Several transverse channels 39 each see the connection of a group of three channels from the go zone 22.
- the outermost oblique arm 44 has a longitudinal extension X1 measured along the longitudinal direction of the channels of the go zone 22.
- Channels of the return zone 25 connect to transverse channels 39 via oblique return arms 45.
- transverse channels 39 are each connected to a single oblique arm 45.
- the transverse channels 39 are equal in number to the number of channels in the return zone 25.
- the outermost return oblique arm 45 has a longitudinal extension X2 measured along the longitudinal direction of the channels of the outward zone 22.
- the device has slots 50 to receive the cells to be cooled.
- Each battery cell location 50, in the turnaround area 24, is located in the interval between two neighboring transverse channels 39.
- each battery cell 2 mainly sees the DX interval between two transverse channels 39, and not the entire width of a transverse channel 39.
- the transverse channel 39 straddles two locations 50 of neighboring battery cells.
- the ratio between the number of channels in the densified section 28 of the outward zone and the number of channels leaving the reversal zone 24 is between 2 and 4, for example this ratio being equal to 2, 3 or 4.
- the ratio between the number of channels in the return zone 25 and the number of channels leaving the reversal zone 24 is chosen to be between 0.5 and 2, this ratio possibly being equal to 1.
- the pitch DX between the transverse channels of the reversal zone is greater, in particular at least 1.5 greater, than the pitch DY between the channels in the densified section of the forward zone and in the return zone.
- the pitch between the transverse channels of the reversal zone is between 10 mm and 100 mm.
- the thermal regulation device has a single fluid flow path 60, this path 60 having a U-shape between the fluid inlet 7 and the fluid outlet 8, this path U being formed by the channels 21 of the forward zone, the reversal zone and the return zone.
- FIG. 1 schematically illustrates this global path 60 simple U.
- the thermal control device has several fluid flow paths, each path having a U-shape between a fluid inlet and a fluid outlet, each path being formed by the channels of one of the forward zones, one of the turnaround zones and one of the return zones.
- the thermal regulation device has two U-shaped flow paths 61 sharing common fluid inlets and outlets 7 and 8.
- the U-shaped paths 61 have mirror symmetry with respect to each other.
- the axis of symmetry SY1 mirror is parallel to the branches 61 of the U.
- the thermal regulation device has four U-shaped flow paths 61, sharing two common fluid inlets and one outlet.
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202280074236.2A CN118302901A (zh) | 2021-11-08 | 2022-10-28 | 特别是冷却装置的热控制装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FRFR2111801 | 2021-11-08 | ||
FR2111801A FR3128986B1 (fr) | 2021-11-08 | 2021-11-08 | Dispositif de regulation thermique, notamment de refroidissement |
Publications (1)
Publication Number | Publication Date |
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WO2023078810A1 true WO2023078810A1 (fr) | 2023-05-11 |
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PCT/EP2022/080306 WO2023078810A1 (fr) | 2021-11-08 | 2022-10-28 | Dispositif de régulation thermique, notamment de refroidissement |
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CN (1) | CN118302901A (fr) |
FR (1) | FR3128986B1 (fr) |
WO (1) | WO2023078810A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020080563A1 (en) * | 2000-06-05 | 2002-06-27 | Pence Deborah V. | Multiscale transport apparatus and methods |
WO2016191881A1 (fr) * | 2015-06-04 | 2016-12-08 | Dana Canada Corporation | Échangeur de chaleur avec distribution d'écoulement régionale pour le refroidissement uniforme de cellules de batterie |
DE202019101687U1 (de) * | 2019-03-25 | 2020-06-26 | Reinz-Dichtungs-Gmbh | Temperierplatte mit einem mikrostrukturierten Flüssigkeitskanal, insbesondere für Kraftfahrzeuge |
-
2021
- 2021-11-08 FR FR2111801A patent/FR3128986B1/fr active Active
-
2022
- 2022-10-28 CN CN202280074236.2A patent/CN118302901A/zh active Pending
- 2022-10-28 WO PCT/EP2022/080306 patent/WO2023078810A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020080563A1 (en) * | 2000-06-05 | 2002-06-27 | Pence Deborah V. | Multiscale transport apparatus and methods |
WO2016191881A1 (fr) * | 2015-06-04 | 2016-12-08 | Dana Canada Corporation | Échangeur de chaleur avec distribution d'écoulement régionale pour le refroidissement uniforme de cellules de batterie |
DE202019101687U1 (de) * | 2019-03-25 | 2020-06-26 | Reinz-Dichtungs-Gmbh | Temperierplatte mit einem mikrostrukturierten Flüssigkeitskanal, insbesondere für Kraftfahrzeuge |
Also Published As
Publication number | Publication date |
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FR3128986B1 (fr) | 2023-10-27 |
FR3128986A1 (fr) | 2023-05-12 |
CN118302901A (zh) | 2024-07-05 |
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