WO2022268582A1 - Dispositif de régulation thermique. - Google Patents
Dispositif de régulation thermique. Download PDFInfo
- Publication number
- WO2022268582A1 WO2022268582A1 PCT/EP2022/066219 EP2022066219W WO2022268582A1 WO 2022268582 A1 WO2022268582 A1 WO 2022268582A1 EP 2022066219 W EP2022066219 W EP 2022066219W WO 2022268582 A1 WO2022268582 A1 WO 2022268582A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dielectric fluid
- electrical
- conduit
- heat exchanger
- electronic components
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 188
- 239000013529 heat transfer fluid Substances 0.000 claims abstract description 18
- 230000033228 biological regulation Effects 0.000 claims description 47
- 230000007423 decrease Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 abstract description 8
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 210000000352 storage cell Anatomy 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- H01M10/61—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
- H01M10/65—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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
- 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
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20236—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures by immersion
-
- 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
- H05K7/20763—Liquid cooling without 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 lies in the field of devices for thermal regulation of electrical or electronic components, and it relates more particularly to a device for thermal regulation of electrical or electronic components liable to heat up during their operation.
- the electrical or electronic components likely to be concerned by the present invention may just as well consist of computer servers as of electrical energy storage systems, in particular batteries, for motor vehicles.
- thermal regulation devices make it possible to modify the temperature of an electric battery, whether when starting the vehicle in cold weather, by increasing its temperature for example, or whether driving or during a battery recharging operation, by reducing the temperature of this electric battery, which tends to heat up during use.
- thermal regulation devices make use of heat exchangers.
- the various battery cells of an electrical 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. It has been observed that such heat exchangers can lead to inhomogeneous cooling of the electrical batteries of the same electrical storage system, then leading to a reduction in the overall performance of the electrical storage system.
- These thermal regulation devices also have a high thermal resistance due to the thicknesses of material present between the cooling fluid and the battery cells.
- the storage cells arranged furthest from the inlet of dielectric fluid in the casing are less well cooled by heat exchange with the dielectric fluid. than the storage cells which are located closest to the dielectric fluid inlet, so that the cooling of the electrical or electronic components is not carried out uniformly.
- the present invention falls within this context and has as its main object a thermal regulation device for several electrical and/or electronic components capable of releasing heat during their operation, the thermal regulation device comprising a housing configured to house the electrical and/or electronic components and means for thermal regulation of the electrical and/or electronic components by means of a dielectric fluid capable of at least partially immersing the electrical and/or electronic components, characterized in that the means of thermal regulation comprise on the one hand a heat exchanger suitable for the dielectric fluid and a heat transfer fluid to pass through, the heat exchanger comprising at least one dielectric fluid inlet and one dielectric fluid outlet, the thermal regulation means comprising on the other hand, a dielectric fluid distribution system which is arranged at the outlet of dielectric fluid from the heat exchanger and which comprises at least two orifices for projecting the dielectric fluid, the distribution system participating in at least partially delimiting a conduit which extends in one direction main elongation in the extension of the dielectric fluid outlet of the heat exchanger, the conduit being configured so as to have a passage section of the variable di
- the thermal regulation device aims to reduce the temperature of several electrical and/or electronic components thanks to the circulation of the cooled dielectric fluid between the electrical and/or electronic components.
- the dielectric fluid is also cooled by heat exchange with the heat transfer fluid at the heat exchanger. It is understood from this that the dielectric fluid is cooled in the heat exchanger by heat exchange with the heat transfer fluid, then is directed towards the electrical and/or electronic components to cool them in turn.
- the device is particularly advantageous in the case where the electrical and/or electronic components housed in the casing are arranged successively along a direction of elongation of the casing, parallel to the main direction of elongation of the conduit, the dielectric fluid possibly then be directed directly opposite or in the vicinity of electrical and/or electronic components arranged at the end of this succession of components which is opposite the heat exchanger.
- the dielectric fluid is directed from the heat exchanger through the distribution system, and more precisely through the conduit delimited by the distribution system.
- the dielectric fluid after having been cooled by exchanging calories with the heat transfer fluid, circulates in the conduit from the dielectric fluid outlet of the heat exchanger to the projection orifices of the distribution system. Thanks to the distribution system, the cooled dielectric fluid is evenly distributed at the level of the various electrical and/or electronic components.
- the distribution system thus makes it possible to cool a maximum of electrical and/or electronic components and in particular to prevent the electrical and/or electronic components furthest from the dielectric fluid outlet of the heat exchanger from being less well cooled than others.
- the variation of the passage section of the duct from the axial end of the duct facing a dielectric fluid outlet of the heat exchanger to the other axial end of the duct is configured such that the aim is to vary the flow velocity of the dielectric fluid circulating in the duct as the distance from the dielectric fluid outlet increases of the heat exchanger. It is also intended to control the pressure drops at each variation in section on passing from one portion of conduit to another, these pressure drops making it possible to force the dielectric fluid to be distributed evenly over the entire elongation dimension. of the duct.
- the dielectric fluid projection orifices are distributed along the duct, in the main direction of elongation of this duct.
- the distribution all along the duct of the projection orifices optimizes a regular projection of the cooled dielectric fluid all along the duct, so as to allow homogeneous cooling of the electrical and/or electronic components whatever their position in the thermal regulation device .
- the projection orifices are distributed in pairs, the dielectric fluid projection orifices of each pair being arranged opposite one another with respect to a direction perpendicular to the main direction of elongation of the conduit. It is understood that the projection orifices are thus configured to project fluid in opposite directions, which is particularly advantageous when the conduit extends between two rows of electrical or electronic components in order to direct the dielectric fluid towards each of these rows.
- the duct has a circular passage section, the projection orifices of the same pair being arranged diametrically opposite one another.
- the passage section of the conduit decreases as it moves away from the dielectric fluid outlet of the heat exchanger.
- a dimension of the passage section of the conduit measured at the level of the dielectric fluid outlet of the heat exchanger is greater than a dimension of the passage section of the conduit measured at the level of an end of the conduit axially opposite the exit of heat exchanger dielectric fluid.
- the passage section of the duct decreases continuously as the distance from the dielectric fluid outlet of the heat exchanger increases.
- the distribution system participates in defining a conduit of frustoconical shape, the tip of the cone of which is axially opposite to the dielectric fluid outlet of the heat exchanger.
- the passage section of the duct decreases in successive stages as the dielectric fluid outlet moves away from the heat exchanger, forming a plurality of successive portions having different passage sections.
- Each level of the duct can be defined by a part of the duct at the level of which the passage section of the duct is constant.
- each of the bearings of the conduit has a passage section of smaller size than the passage section of the previous bearing, according to the direction of circulation of the dielectric fluid, from the dielectric fluid outlet of the exchanger heat to the free end of the distribution system.
- a first portion of the duct is connected to the dielectric fluid outlet of the heat exchanger, the first portion of the conduit having a larger passage section than the corresponding passage section of the other or other portions of the conduit.
- the successive portions of the duct have passage sections of decreasing values along the main direction of elongation of the duct from the exit of the dielectric fluid from the heat exchanger to one end free from the distribution system.
- the distribution system comprises at least one first dielectric fluid projection orifice which is arranged on a portion of the conduit and at least one second dielectric fluid projection orifice which is arranged on another portion.
- the distribution system comprises several orifices for spraying dielectric fluid, the number of spray orifices being at least equal to the number of portions of different sections that the duct comprises.
- the distribution system comprises at least one dielectric fluid projection orifice disposed on each portion of the conduit.
- the distribution system comprises at least two dielectric fluid projection orifices arranged on each portion of the conduit on either side of the main direction of elongation of the conduit.
- the duct is formed by a plurality of coaxial tubular elements of different cross-sections and of different lengths.
- Each tubular element originates at the level of the dielectric fluid outlet of the heat exchanger. It is understood that the tubular elements are nested one inside the other, so that at least one tubular element extends around another tubular element, and the different lengths, measured along their common axis from the exchanger thermal, make it possible to create for each tubular element a free portion not covered by other tubular elements through which the dielectric fluid is capable of exiting in the direction of the electrical and/or electronic components.
- each portion of the duct is formed by a free portion of one of the tubular elements not covered by another tubular element.
- at least one spray orifice is arranged at the level of the free portion of each of the tubular elements.
- the distribution system comprises at least one shell participating in at least partially delimiting the conduit, the housing comprising a plurality of walls participating in delimiting the housing for housing the electrical and/or electronic components, at least one of the walls of the casing and said shell being capable of cooperating to delimit the duct.
- the duct is here formed both by the shell of the distribution system and at least one wall of the casing participating in housing the electrical and/or electronic components.
- the invention also relates to an electronic system comprising electrical and/or electronic components and a thermal regulation device as previously described, the electrical and/or electronic components being distributed in at least two rows, the rows extending parallel to a main direction of elongation of the conduit, the distribution system extending at least in part between two rows of electrical and/or electronic components.
- the dielectric fluid projection orifices are arranged on the conduit so as to face one of the electrical and/or electronic components. It is understood that the dielectric fluid is sprayed directly onto the electrical and/or electronic components and thus optimizes the electrical and/or electronic components.
- the distribution system comprises at least one first orifice for projecting dielectric fluid which is arranged on a portion of the conduit and at least one second orifice for projecting fluid dielectric which is arranged on another portion
- the first projection orifice is arranged in line with one of the electrical and/or electronic components
- the second projection orifice being arranged in line with another of the electrical and/or electronic components.
- each projection orifice is arranged in line with one of the electrical and/or electronic components.
- each electrical and/or electronic component is arranged in line with one of the projection orifices.
- FIG. î is a general view of an electrical storage system housed within a motor vehicle, comprising a thermal regulation device and electrical and/or electronic components
- FIG. 2 is a general perspective view of a housing of the thermal regulation device of FIG. i comprising the electrical and/or electronic components
- FIG. 3 is a view according to a longitudinal section of the thermal regulation device of FIG. 2 in which is housed a system for distributing a dielectric fluid according to a first exemplary embodiment and a heat exchanger through which the dielectric fluid and a heat transfer fluid pass ;
- FIG. 4 is a view according to a longitudinal section of the thermal regulation device of FIG. 2 in which is housed a system for distributing a dielectric fluid according to a second embodiment and a heat exchanger through which the dielectric fluid and a heat transfer fluid pass .
- variants of the invention may be associated with each other, in various combinations, insofar as they are not incompatible or exclusive with respect to each other.
- variants of the invention may be imagined comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage and/or to differentiate the invention. compared to the prior art.
- transverse and “vertical” refer to the orientation of a distribution system according to the invention.
- a longitudinal direction corresponds to a main direction of elongation of a duct of the distribution system, this longitudinal direction being parallel to a longitudinal axis L of an L, V, T illustrated in the figures.
- a transverse direction corresponds to a direction along which the projection orifice mainly extends, this transverse direction being parallel to a transverse axis T of the reference L, V, T and this transverse axis T being perpendicular to the longitudinal axis L.
- a vertical direction corresponds to a direction parallel to a vertical axis V of the reference L, V, T, this vertical axis V being perpendicular to the longitudinal axis L and the transverse axis T.
- upstream and downstream used in the rest of the description refer to the direction of circulation of a dielectric fluid through the thermal regulation device.
- thermal regulation device in relation to an electronic system in the form of a motor vehicle electrical energy storage system, but it must be understood that such an application is not limiting and that it could in particular be applied in the context of the invention to electrical or electronic components equipping other electronic systems and for example computer servers.
- FIGS. i and 2 an electrical storage system i, suitable in particular for equipping a motor vehicle 2 with electric or hybrid motorization, is illustrated.
- Such an electrical storage system i is intended in particular to supply electrical energy to the motor vehicle 2 with a view to its movement.
- the electrical storage system i comprises a thermal regulation device 4 configured to cool or raise the temperature of each electrical or electronic component 6 forming part of the electrical storage system 1, these components being in particular liable to heat up during their operation or to their load. More particularly, this thermal regulation device 4 comprises at least one casing 8 which is configured to receive a plurality of said electrical and/or electronic components 6, here taking the form of battery elements 10, and it further comprises means of thermal regulation 12 capable of regulating the temperature of the electrical or electronic components 6 inside the casing 8. It should be noted that other configurations of the electrical storage system 1 could be implemented according to the invention as soon as this system comprises a thermal regulation device 4 in accordance with the invention.
- the casing 8 comprises a plurality of walls which define inside this casing 8 a housing 14, more particularly visible in FIG. 2, which is configured to receive at least the electrical and/or electronic components 6 and the regulation means thermal 12.
- the walls defining the housing 8 form in particular a base 16 and a cover 18.
- Base 16 includes a bottom wall 20 and a plurality of side walls 22. More specifically, bottom wall 20 extends in a plane parallel to the longitudinal L and transverse T directions generally in the form of a quadrilateral, advantageously rectangular, the side walls 22 for their part each extending from one side of the bottom wall 20 while being inscribed in a plane parallel to the longitudinal L and vertical V directions. In other words, the side walls 22 s extend from the bottom wall 20 perpendicular to the latter.
- the cover 18 has a shape substantially identical to that of the bottom wall 20, therefore here in the form of an advantageously rectangular quadrilateral, and is arranged to cover the base 16 of the housing 8 and close the opening between the side walls 22 by which the electrical and/or electronic components 6 are placed in the housing 14. It is understood in particular that the cover 18 is arranged overhanging the base 16, in contact with the free edges of the side walls 22, in particular when the electrical storage system 1 is mounted on the motor vehicle 2.
- the base 16 and the cover 18 are also fixed to each other so as to seal the housing 14 of the housing 8 of the environment exterior of the casing 8. It is understood by “hermetic" that the base 16 and the lid 18 are secured to one another so that no exchange of fluid can be carried out between the interior of the housing 14 of the casing 8 and the external environment of the box 8 at the level of the interaction between base and cover.
- the electrical and/or electronic components 6 are arranged in the housing 14 of the casing 8 in the form of at least two rows, that is to say that the electrical and/or electronic components 6 form two sets aligned along a direction parallel to the longitudinal direction L.
- a first part of the electrical and/or electronic components 6 form a first set arranged in the form of a first row of electrical and/or electronic components 6 aligning along a first direction parallel to the longitudinal direction L
- a second part of the electrical and/or electronic components 6 form a second set arranged in the form of a second row of electrical and/or electronic components 6 aligning along a second direction parallel to the longitudinal direction L and the first direction.
- the two rows of electrical and/or electronic components 6 contribute to delimiting in the housing 14 a fluid circulation aisle 46 between the rows, this aisle also being visible in FIG. 2.
- the thermal regulation means 12 comprise in particular a heat exchanger 24, capable of cooling a dielectric fluid intended to be projected onto the electrical and/or electronic components, and a distribution system 26 of the dielectric fluid in the housing 14 of the casing 8.
- the dielectric fluid participates in the thermal regulation of the electrical and/or electronic components 6 by exchanging calories with said electrical and/or electronic components 6.
- the dielectric fluid is contained in the housing 14 of the casing 8 and immerses at least in parts the electrical and/or electronic components 6, thus allowing the exchange of calories on the entire outer surface of the electrical and / or electronic components 6 immersed.
- all the electrical and/or electronic components 6 are totally immersed in the dielectric fluid, thus optimizing their thermal regulation by the dielectric fluid.
- the heat exchanger 24 allows the exchange of calories between the dielectric fluid and a heat transfer fluid circulating through a heat transfer fluid circuit 28.
- the heat exchanger 24 comprises a first pass 30 through which the dielectric fluid can circulate and a second pass 32 through which the heat transfer fluid can circulate.
- the first pass 30 has a dielectric fluid inlet 34 fluidly connected to the housing 14 in which the dielectric fluid is contained and a dielectric fluid outlet 36 fluidically connected to the distribution system 26 of dielectric fluid.
- the second pass 32 is for its part constituting a heat transfer fluid circuit, moreover external to the electrical storage system 1. The exchange of calories between the dielectric fluid and the heat transfer fluid takes place when said dielectric and heat transfer fluids circulate respectively through their pass 30, 32.
- the dielectric fluid circulating in the first pass 30 can yield calories to the benefit of the heat transfer fluid circulating in the second pass 32, the temperature of the dielectric fluid thus being reduced by this loss of calories, or the dielectric fluid circulating in the first pass 30 can capture the calories released by the heat transfer fluid circulating in the second pass 32, the temperature of the dielectric fluid thus being increased by this calorie supply.
- the temperature of the dielectric fluid is thermally regulated at the level of the heat exchanger 24 by the heat transfer fluid, thanks to an exchange of calories between the dielectric fluid circulating in the first pass 30 and the heat transfer fluid circulating in the second pass 32.
- the thermal regulation means 12 comprises a pumping member 38 forcing the circulation of the dielectric fluid through the heat exchanger 24. More specifically, the pumping member 38 forces the circulation of the dielectric fluid through the first pass 30 of the heat exchanger 24.
- the pumping member 38 is configured to force the circulation of the dielectric fluid on the one hand through the heat exchanger 24, and on the other hand through the distribution system 26, and also through the housing 14. Thanks to the pumping member 38, which sucks up part of the dielectric fluid present in the housing and which generates a movement of the dielectric fluid in which the electrical and/or electronic components 6 are immersed, the dielectric fluid is thermally regulated by circulating at through the heat exchanger 24, before circulating within the distribution system 26 present in the housing 14 and being directed at the outlet of this distribution system 26 directly towards the electrical and/or electronic components 6, which are therefore supplied in cooled dielectric fluid and better able to ensure their thermal regulation.
- the pumping member 38 is preferably arranged at the level of the dielectric fluid inlet 34 of the heat exchanger 24.
- the pumping member 38 draws in a part of the dielectric fluid contained in the housing 14 and then propels it through the first pass 30 of the heat exchanger 24.
- the propulsion of the dielectric fluid in the first pass 30 by the pumping member 38 is powerful enough to set the dielectric fluid in motion through all the components of the thermal regulation device 4.
- the pumping member 38 can for example be arranged at the level of the dielectric fluid outlet 36 or at the level of the distribution system 26. It is understood from this that the pumping member 38 can , more generally, be either disposed at the heat exchanger 24, the distribution system 26 or in the housing 14 without departing from the scope of the invention, as long as it fulfills the purpose set by the invention, which as a reminder is to force the circulation of the dielectric fluid through the heat exchanger 24, the distribution system 26 and/or the housing 14.
- the heat exchanger is in the example illustrated housed in the casing, but it should be noted that without departing from the context of the invention, provision could be made for the heat exchanger to be arranged outside the casing, since the first pass 30 associated with the dielectric fluid and the dielectric fluid outlet 36 are fluidly connected to the distribution system 26 which extends itself according to the invention within the housing.
- the heat exchanger 24 can in particular, as can be seen in FIGS. 2 to 4, be arranged inside the housing facing a side wall and in particular inside a recess 25 formed in one of the side walls so as not to reduce the space available for the electrical and/or electronic components 6.
- a compartmentalization wall can be provided to close this recess and allow the heat exchanger to be dry, that is to say say no in contact with the dielectric fluid present in the housing, or else the recess can be filled with dielectric fluid with the heat exchanger which is submerged, it being understood that this heat exchanger is sealed against any ingress of dielectric fluid other than at the dielectric fluid inlet 34.
- the distribution system 26 is installed at the dielectric fluid outlet 36 of the heat exchanger 24.
- the distribution system 26 is arranged downstream of the heat exchanger 24, that is that is to say that the dielectric fluid circulates through the heat exchanger 24, and more precisely through the first pass 30, before circulating in the distribution system 26.
- the distribution system 26 extends mainly between two rows of electrical and/or electronic components 6. More particularly, the distribution system 26 extends in the fluid circulation aisle 46 delimited at least in part by the two rows of electrical and/or electronic components 6.
- the distribution system 26 participates in defining at least partially a conduit 40 and at least two projection orifices 42 of dielectric fluid which make it possible to direct the dielectric fluid circulating in the conduit 40 inside the housing 14 and in the direction of the electrical components. and or electronics 6.
- the dielectric fluid outlet 36 of the heat exchanger 24 opens into the conduit 40 of the distribution system 26, the dielectric fluid thus circulating through the conduit 40 from the dielectric fluid outlet 36 to one of the projection orifices 42.
- the heat exchanger may consist of a tube exchanger within which the heat transfer fluid circulates, the dielectric fluid passing through the exchanger from a first face to a second face passing between the tubes, and in this case , the distribution system originates at the level of the second face.
- the dielectric fluid is thermally regulated at the level of the heat exchanger 24 before circulating downstream of the latter through the distribution system 26.
- the conduit 40 of the distribution system 26 extends along a main direction of elongation A in the extension of the dielectric fluid outlet 36 of the heat exchanger 24, the main direction of elongation A of the conduit 40 being substantially parallel to the longitudinal direction L.
- the conduit 40 is mainly delimited by at least one internal face of a tubular wall 44 of the distribution system 26.
- the tubular wall 44 is crossed by the projection orifices 42, the dielectric fluid circulating in the conduit 40 being projected into the housing 14 by crossing the tubular wall 44 at the level of the projection orifices 42.
- the projection orifices 42 generally take the form of channels extending radially in the tubular wall 44 delimiting the duct 40, each channel being open on the one hand to the duct 40 and on the other hand to the housing 14 and being able to present a passage section of circular, rectangular or other shape.
- the projection orifices 42 of the dielectric fluid are distributed along the duct 40 in the main direction of elongation A of this duct 40, so that the dielectric fluid circulating in the duct 40 can be projected into the housing 14 all along conduit 40.
- the projection orifices 42 are distributed along the duct 40 in a regular manner. In other words, the same distance separates each of the projection orifices 42 from the neighboring projection orifices 42, this distance being measured along a direction parallel to the main direction of elongation A.
- the regular position along the duct 40 of the projection orifices 42 allows a homogeneous projection of the dielectric fluid over the length of the conduit 40, thus allowing the homogeneous cooling of the electrical and/or electronic components 6 distributed along the distribution system 26.
- the projection orifices 42 are distributed in pairs, the projection orifices 42 of the dielectric fluid of each pair being arranged opposite one another to project dielectric fluid in opposite directions.
- the projection orifices 42 of the same pair are aligned along a direction substantially parallel to the transverse direction T.
- the orifices of projection 42 of the same pair are diametrically opposed to each other.
- the projection orifices 42 of dielectric fluid are arranged on the conduit 40 so as to face one of the electrical and/or electronic components 6.
- This arrangement of the projection orifices 42 optimizes the thermal regulation of the electrical components and/or or electronics 6 by allowing the projection of thermally regulated dielectric fluid at the level of the heat exchanger 24 directly onto one of the electrical and/or electronic components 6.
- each projection orifice 42 of the distribution system 26 is arranged on the conduit 40 so as to be in line with one of the electrical and/or electronic components 6.
- a maximum number of electrical and/or electronic components 6 is thermally regulated by the dielectric fluid projected by the distribution system 26.
- each electrical and/or electronic component 6 is arranged opposite one of the orifices of projection 42 of the distribution system 26. It is understood that in this alternative, each electrical and/or electronic component 6 is intended to directly receive dielectric fluid projected by the distribution system 26, optimizing the regulation of all the electrical components and /or electronic 6.
- the conduit 40 is configured so as to have a variable dielectric fluid passage section.
- the passage section corresponds to a section of the conduit 40 delimited by the internal face of the tubular wall 44 seen in a section plane perpendicular to the main direction of elongation A.
- the passage section of the dielectric fluid of the conduit 40 is variable in that the passage section measured at the level of an axial end of the conduit 40 is different, that is to say larger or smaller, than a passage section of the dielectric fluid of the conduit 40 measured at the level of another axial end of said conduit 40. It is thus understood that conduit 40 has several dielectric fluid passage sections of different dimensions.
- the passage section of conduit 40 decreases as it moves away from the dielectric fluid outlet 36 of heat exchanger 24.
- the passage section of conduit 40 measured at one axial end of conduit 40 opposite dielectric fluid outlet 36 is greater than a passage section of conduit 40 measured at the other axial end of conduit 40, i.e. i.e. the free end of the duct opposite the heat exchanger 24.
- the progressive reduction in the passage section of the duct 40 from the axial end of the duct 40 facing the dielectric fluid outlet 36 until the other axial end of conduit 40 makes it possible to increase the speed of flow of the dielectric fluid circulating in conduit 40 as the distance between dielectric fluid outlet 36 and heat exchanger 24 increases.
- the tubular wall delimiting the duct may be made in one piece and attached opposite one of the walls of the casing 8 or for this tubular wall to be formed by the combination of a shell and a complementary shape integral with one of the walls of the casing 8 participating in delimiting the housing 14.
- the wall of the casing mentioned can in particular be the bottom wall 20 of the casing, being understood that the duct could be placed near one of the side walls 22 or the cover 18 of the box 8 without departing from the scope of the invention.
- FIG. 4 illustrates two different cases for the realization of the variable passage section of the duct.
- each portion of the duct 40 can be defined by a part of the duct at the level of which the passage section of the duct 40 is constant.
- a first portion 48 and a second portion 50 of the conduit 40 are defined, the first portion 48 having a passage section of the dielectric fluid larger than that of the second portion 50. It is understood that a first dimension Di corresponding to the internal diameter of the conduit 40 measured at the level of the first portion 48 is larger than a second dimension D2 corresponding to the internal diameter of the conduit 40 measured at the level of the second portion 50.
- the variable passage section of the conduit is such that the passage section decreases as the distance from the heat exchanger increases, and in this context, as illustrated in Figure 3, the first portion 48 of conduit 40 is disposed closer to the heat exchanger 24 than the second portion 50, the first portion 48 of conduit 40 being connected directly to the dielectric fluid outlet 36 of the heat exchanger 24.
- the conduit 40 comprises several portions of different sections, the first portion 48 having the largest passage section compared to the other portions of the conduit 40.
- the successive portions of the conduit 40 have sections passage of decreasing values along the main direction of elongation A of the conduit 40 from the outlet of the dielectric fluid 36 of the heat exchanger 24 to a free end 52 of the distribution system 26. It is understood from the foregoing that the passage section of each of the portions of the conduit 40 has a passage section of smaller size than the passage section of the previous portion e, depending on the direction of circulation of the dielectric fluid in the distribution system 26.
- the second portion 50 of the conduit 40 has a smaller passage section than that of the first portion 48 of the conduit 40, the passage of the second portion 50 of the conduit 40 being however greater than the passage sections of the portions of the conduit 40 arranged between the second portion 50 and the free end 52 of the distribution system 26.
- the distribution system 26 comprises at least one first projection orifice 42a of dielectric fluid which is placed on the first portion 48 of the conduit 40 and at least one second projection orifice 42b of dielectric fluid which is placed on the second portion 50 of the conduit 40.
- the dielectric fluid circulating in the first portion 48 of the conduit 40 can be projected into the housing 14 at the level of the first projection orifice 42a, the dielectric fluid circulating in the second portion 50 of the conduit 40 being able to meanwhile be projected into the housing 14 at the level of the second projection orifice 42b.
- the number of projection orifices 42 is at least equal to the number of portions of different sections that the conduit 40 comprises, with at least one projection orifice 42 of dielectric fluid disposed on each portion of the conduit 40.
- the distribution system 26 comprises a conduit with eight portions and sixteen projection orifices 42, each portion of the conduit 40 comprises at least two projection orifices 42.
- the two projection orifices 42 of each of the portions of the duct 40 are arranged opposite one another with respect to the main direction of elongation A of the duct 40.
- each projection orifice 42 of each of the portions of conduit 40 faces one of the electrical and/or electronic components 6.
- the conduit 40 may be formed by a plurality of co-axial tubular elements 54 of different cross-sections and of different lengths, or a plurality plane elements stacked on top of each other in a vertical direction V, of different lengths.
- the conduit 40 comprises several tubular elements 54 nested one inside the other, so that at least one tubular element 54 is arranged around another tubular element 54 with a space between the two tubular elements to leaving a passage for dielectric fluid from the dielectric fluid outlet of the heat exchanger.
- co-axial it should be understood that each tubular element 54 constituting the duct 40 has a shape of revolution around an axis of revolution, here parallel to the main direction of elongation A of the duct 40, and that all the axes of revolution coincide.
- the dielectric fluid can circulate in each of the tubular elements 54 of the conduit 40.
- the dielectric fluid circulates in the conduit 40 between the internal face of a first tubular element 54 and the external face of another tubular element 54 surrounded by the first tubular element 54 from the dielectric fluid outlet 36 of the heat exchanger 24 to a projection orifice 42 arranged on a free portion 56 of the first tubular element 54, that is to say a portion not covered by the neighboring tubular element which surrounds it.
- Each portion of conduit 40 is formed by a free portion 56 of one of the tubular elements 54 not covered by another tubular element 54.
- a first part of a tubular element 54 is covered by an adjacent tubular element and a second part of this tubular element 54 is disengaged opposite the housing 14, and the free portion 56 of the tubular elements 54 represents this second part of said tubular elements 54.
- the most centrally arranged tubular element, and therefore surrounded at least partially by each of the other tubular elements has a greater longitudinal dimension than the others, and the longitudinal dimension of the other elements tubulars decreases as one moves away from the center of the duct, that is to say from the common axis of revolution of the tubular elements.
- Each tubular element 54 thus has a first longitudinal end in the vicinity of the dielectric fluid outlet 36 of the heat exchanger 24 and an opposite second longitudinal end which extends at a distance specific to this tubular element, and each tubular element has a different length, each length being measured along a direction parallel to the main direction of elongation A of the duct.
- the free end of each tubular element is closed, only crossed by the neighboring tubular element closer to the center of the conduit, so that the dielectric fluid circulating between these two tubular elements cannot go beyond this free end and that it is forced out through the projection orifices arranged on the free portion of the corresponding tubular element.
- At least one projection orifice 42 is arranged at the level of the free portion 56 of each of the tubular elements 54, that is to say at the level of each portion of the duct 40, to allow a regular output of dielectric fluid in the direction of the housing.
- each free portion 56 comprises two projection orifices 42 opposite one another, if necessary diametrically opposite, with reference to a direction perpendicular to the direction of main elongation A of the conduit 40.
- the number of portions of the conduit is equal to the number of electrical and/or electronic components 6 of a row of these components, and each of the projection orifices 42 is arranged opposite one of the electrical and/or electronic components 6.
- a second exemplary embodiment of the invention, visible in FIG. 4, differs from the first exemplary embodiment in that the passage section of the duct 40 here decreases continuously as the distance from the fluid outlet increases dielectric 36 of the heat exchanger 40 and no longer in stages.
- the distribution system 26 is configured in this second example so as to define a duct 40 of frustoconical shape, with a tip of the cone which is axially opposite to the dielectric fluid outlet 36 of the heat exchanger 24 .
- the projection orifices 42 are distributed over the wall delimiting the frustoconical shape of the duct, so as to face an electrical and/or electronic component. In the example shown, these orifices are evenly distributed from the dielectric fluid outlet 36 of the heat exchanger 24.
- the present invention fulfills the goal it has set itself of a homogeneous distribution of dielectric fluid in a box housing electrical components and / or electronics for uniform cooling of each of these components.
- the duct has a frustoconical shape or a shape in successive stages
- the specific shape of the duct according to the invention makes it possible to reduce, as the distance from the heat exchanger progresses, the passage section of the dielectric fluid and to thus generate pressure drops, here continuously, making it possible to force the dielectric fluid to distribute itself homogeneously over the entire elongation dimension of the conduit.
- the present invention cannot however be limited to the means and configurations described and illustrated here and it also extends to any equivalent means and configuration as well as to any technically effective combination of such means, since a dielectric fluid is brought to circulate in a conduit of scalable section provided with projection orifices arranged opposite a row of electrical and/or electronic components.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280052475.8A CN117751482A (zh) | 2021-06-21 | 2022-06-14 | 温度调节装置 |
EP22733625.2A EP4360158A1 (fr) | 2021-06-21 | 2022-06-14 | Dispositif de régulation thermique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2106559 | 2021-06-21 | ||
FR2106559A FR3124320B1 (fr) | 2021-06-21 | 2021-06-21 | Dispositif de régulation thermique. |
Publications (1)
Publication Number | Publication Date |
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WO2022268582A1 true WO2022268582A1 (fr) | 2022-12-29 |
Family
ID=77180203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/066219 WO2022268582A1 (fr) | 2021-06-21 | 2022-06-14 | Dispositif de régulation thermique. |
Country Status (4)
Country | Link |
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EP (1) | EP4360158A1 (fr) |
CN (1) | CN117751482A (fr) |
FR (1) | FR3124320B1 (fr) |
WO (1) | WO2022268582A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10530022B2 (en) * | 2015-11-04 | 2020-01-07 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Electric battery comprising a system for homogenizing its internal temperature |
DE102018222574A1 (de) * | 2018-12-20 | 2020-06-25 | Mahle International Gmbh | Energiespeicheranordnung |
FR3099643A1 (fr) * | 2019-08-02 | 2021-02-05 | Valeo Systemes Thermiques | Dispositif de gestion thermique pour batterie comportant un dispositif magnétocalorique |
-
2021
- 2021-06-21 FR FR2106559A patent/FR3124320B1/fr active Active
-
2022
- 2022-06-14 WO PCT/EP2022/066219 patent/WO2022268582A1/fr active Application Filing
- 2022-06-14 EP EP22733625.2A patent/EP4360158A1/fr active Pending
- 2022-06-14 CN CN202280052475.8A patent/CN117751482A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10530022B2 (en) * | 2015-11-04 | 2020-01-07 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Electric battery comprising a system for homogenizing its internal temperature |
DE102018222574A1 (de) * | 2018-12-20 | 2020-06-25 | Mahle International Gmbh | Energiespeicheranordnung |
FR3099643A1 (fr) * | 2019-08-02 | 2021-02-05 | Valeo Systemes Thermiques | Dispositif de gestion thermique pour batterie comportant un dispositif magnétocalorique |
Also Published As
Publication number | Publication date |
---|---|
EP4360158A1 (fr) | 2024-05-01 |
CN117751482A (zh) | 2024-03-22 |
FR3124320B1 (fr) | 2023-10-20 |
FR3124320A1 (fr) | 2022-12-23 |
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