Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/656—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
• • 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
  • F28D1/0206—Heat exchangers immersed in a large body of liquid
  • F28D1/0213—Heat exchangers immersed in a large body of liquid for heating or cooling a liquid in a tank
• • 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
  • F28D1/06—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 the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
• • 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
  • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
  • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M2220/00—Batteries for particular applications
  • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• the present invention relates to the field of thermal regulation devices for at least one electrical and/or electronic component, liable to heat up, and it relates in particular to a thermal regulation device for electronic systems comprising such components.
• the electronic systems likely to be concerned by the present invention may just as well consist of computer servers, as of electrical energy storage systems, in particular battery elements, or even semiconductors, for example for motor vehicles.
• thermal regulation devices make it possible to modify a temperature of an electrical energy storage system, whether this is when the vehicle is started in cold weather, by increasing its temperature for example, or either while driving or during a recharging operation of said system, by reducing the temperature of the battery elements, which tend to heat up during their use.
• thermal regulation devices make use of heat exchangers.
• the various battery elements of an electrical energy storage system can in particular be cooled by means of a cold plate inside which a cooling fluid circulates, the plate being in contact with the battery elements to be cooled . It has been observed that such heat exchangers can lead to inhomogeneous cooling of the battery elements of the same electrical energy storage system, then leading to a reduction in the overall performance of said 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.
• Devices are known in particular for cooling the electric battery cells of electric or hybrid cars comprising a hermetically sealed casing in which the battery cells of the electrical energy storage system are partially immersed in a dielectric fluid. In this way, heat exchange is ensured between the battery elements and the dielectric fluid, a tank of dielectric fluid being located outside the casing and connected to said casing in order to allow the circulation of the dielectric fluid.
• the document FR3077683 discloses a battery cell cooling device which also comprises a hermetic casing in which a dielectric fluid is placed, but in which the dielectric fluid is sprayed onto the battery cells by a circuit and appropriate spraying means. In contact with the battery cells which have heated up during their operation, the dielectric fluid sprayed tends to vaporize and the vapor spreads in the casing and in particular along the walls delimiting the casing.
• the document FR3077683 discloses the presence of a condensation wall, comprising within it a refrigerant circuit, the wall being said to be condensation in that the temperature of this wall makes it possible to condense the vapor so that the dielectric fluid takes on a liquid form.
• the means necessary to allow the circulation and then the projection of the dielectric fluid consist of a plurality of conduits which allow the circulation of the dielectric fluid inside the case, passing in particular through the walls of the case to allow entry and exit fluid in the temperature control device.
• the assembly can also be made complicated because of this multiplicity of pipes that must be fixed relative to the walls of the housing so that they do not come into contact with the electrical or electronic components before the fluid is projected.
• the invention falls within this context and aims to offer an alternative to known thermal regulation devices, in particular in their application to electrical storage devices such as motor vehicle batteries, which will allow, among other things, to overcome the problems aforementioned.
• the present invention relates to a thermal regulation device for at least one electrical and/or electronic component whose temperature must be regulated, the thermal regulation device comprising at least one casing comprising a plurality of walls delimiting a housing intended to to receive said electrical and/or electronic component, the device further comprising a dielectric fluid circuit configured to allow the circulation of a dielectric fluid, characterized in that at least one of the walls of the case comprises at least one orifice spraying the dielectric fluid into the housing fluidically connected to the dielectric fluid circuit, the dielectric fluid circuit comprising a section formed within one of the walls of the housing, the section of the dielectric fluid circuit further receives a thermal element intended to exchange heat with the dielectric fluid circulating in the dielectric fluid circuit.
• the qualifier “longitudinal” applies to the direction of a main dimension of the housing of the thermal regulation device connecting two opposite side walls
• the qualifier “transverse” applies to a direction substantially perpendicular to the longitudinal direction and joining together two other side walls of the housing
• the qualifier “vertical” designates the direction perpendicular both to the longitudinal direction and to the transverse direction, substantially perpendicular to the bottom wall of said housing.
• the present invention may also comprise any one of the characteristics, taken alone or in combination with one another as long as it is technically compatible:
• the wall of the casing which houses the section of the dielectric fluid circuit comprises an internal envelope and an external envelope delimiting the section; the terms "internal” and “external” make it possible to define a relative position of each envelope, the internal envelope being towards the inside of the housing of the device and the external envelope being more outside the device with respect to the inner envelope;
• the thermal element is arranged at least partially between the inner casing and the outer casing;
• the section is delimited by at least one cavity formed between the inner casing and the outer casing, the heat exchanger extending at least partially into this cavity;
• the section possibly comprising a plurality of cavities, each of the cavities consisting of an intermediate volume between the internal envelope and the external envelope;
• the cavities defining the section being able to be formed on several walls of the casing the section of the dielectric fluid circuit formed in the wall comprises at least one distribution channel formed by a first cavity in the wall
• the recovery cavity is advantageously formed in the bottom wall, between the outer casing and the inner casing, the inner casing delimiting a bottom face of the housing the distribution ramp and/or the recovery cavity comprises a heat exchanger heat ;
• the distribution ramp receives a first thermal element, and the recovery cavity receives a second thermal element;
• the first thermal element has a cooling and/or heating function, and the second thermal element has a cooling and/or heating function, the first and second thermal element possibly having the same function or a contrary function;
• the first and the second thermal element are adapted so as to be able to be actuated independently of one another;
• the thermal element comprises at least one conduit within which a heat transfer fluid is intended to circulate, the exchanger being adapted so as to allow a heat exchange between the heat transfer fluid inside the conduit and the dielectric fluid circulating in the section dielectric fluid outside the conduit.
• the heat transfer fluid can be glycol water, or a refrigerant fluid of the R134a, R744 (C02) or 1234yf type.
• the heat transfer fluid is intended to have a liquid phase in the operating range of the device.
• the dielectric fluid circuit and the heat transfer fluid circuit are advantageously distinct, so that the dielectric fluid, circulating in the dielectric fluid circuit, and the heat transfer fluid, circulating in the circuit of heat transfer fluid, are not mixed.
• the thermal element comprising an element for supplying heat in particular by Joule effect; the thermal element is a resistive element intended to heat the dielectric fluid circulating in the section.
• At least one of the walls of the casing comprises a plurality of spray orifices, advantageously arranged in series so as to form a row of projection of the dielectric fluid.
• each spray orifice can be equipped with a nozzle for projecting the dielectric fluid
• the plurality of spray orifices can be arranged in a recess in the wall of the casing so as to form a projection from the wall towards the inside of the casing, and therefore, towards the inside of the housing, said recess being configured to form at least one ramp for distributing the dielectric fluid.
• the recess is formed by a local deformation of the internal envelope and/or of the external envelope.
• the section comprises a supply line, formed between the inner casing and the outer casing, forming the fluidic connection between a dielectric fluid inlet mouth and the distribution ramp,
• the supply line is formed by a local deformation of the internal envelope and/or of the external envelope.
• the section comprises an evacuation pipe forming the fluidic connection between the evacuation cavity and an outlet mouth
• the evacuation pipe is formed by a local deformation of the internal envelope and/or of the external envelope
• the thermal regulation device may comprise a plurality of distribution ramps, advantageously at least two distribution ramps being arranged in opposite side walls of the casing, said two distribution ramps being fluidly connected by the supply pipe; each distribution ramp comprises a projection row; one and the same side wall can comprise a plurality of distribution ramps, said ramps being, by way of example, superposed with respect to each other along a vertical direction substantially perpendicular to the bottom wall and to the main direction of the thermal regulation device; the supply pipe extends in said side wall so as to supply dielectric fluid to the plurality of distribution ramps included in this same side wall; the thermal regulation device can be configured to include at least one spray orifice arranged in the bottom wall and fluidly connected to the supply pipe;
• the thermal element can directly form one of the walls of the section, the internal envelope and/or the external envelope, for example the thermal element takes the form of a cold plate serving as a cover for the same title as the outer envelope to form the cavity with the inner envelope.”
• distributed ramp is meant a defined circulation volume of the dielectric fluid delimited on the one hand by the internal envelope and on the other hand by the external envelope, and configured to supply dielectric fluid to the at least one spray orifice.
• the distribution ramp is fluidly connected to the at least one supply pipe and to the at least one spray orifice.
• the recess forming the distribution ramp can be made by thermoforming or by stamping, or can also be made by overmolding an element having the shape of an open duct.
• the evacuation pipe consists of a space for circulation of the dielectric fluid delimited on the one hand by the internal casing and on the other hand by the external casing; in particular, the supply line and the discharge line are separate;
• the thermal regulation device comprises at least one inlet mouth and/at least one outlet mouth for the dielectric fluid in the thermal regulation device, in particular, the at least one inlet mouth is fluidly connected to the conduit of supply while the at least one outlet mouth is fluidly connected to the discharge pipe;
• ie device is arranged so that the section comprises a supply branch and an evacuation branch, the supply branch being the part of the section between and comprising the supply mouth and the orifice(s) of spraying, the evacuation branch being the part of the section between and comprising the evacuation mouth and the evacuation orifice(s);
• the inlet mouth is arranged so as to be able to be connected to an external dielectric fluid supply conduit and the outlet mouth is arranged so as to be able to be connected to an external dielectric fluid evacuation conduit, the term "external", external to the
• the housing can be made, at least partially, or even entirely, of a composite and heat-resistant plastic material; the device comprises a plurality of recovery cavities, each in communication with an evacuation duct and an evacuation orifice opening onto the housing; the material may consist of a thermoplastic consolidated with carbon, glass or aluminum fibers the outer casing may be formed at least partially by a cover, the cover may be overmoulded then welded or fixed by means of at least one fixing device on the casing; the cover may include or be formed from the thermal element;
• the device may further comprise a third thermal element in the form of a condenser, advantageously positioned in the high position of the device, so as to condense the vapor of dielectric fluid within the housing, said condenser is intended to be traversed by a heat transfer fluid of the same type as that of the heat transfer fluid circuit; the outer casing being able to be formed by several caps fixed in leaktight manner to the inner casing; the dielectric fluid can be chosen so as to remain in the liquid phase over the entire normal operating range of the device, and thus called single-phase dielectric fluid, or chosen so as to effect a phase change between the liquid phase and the gaseous phase in the normal operating range of the device, thus called two-phase dielectric fluid, advantageously the two-phase dielectric fluid is chosen so as to have a phase change temperature at an optimum operating threshold temperature of the electrical and/or electronic element to be heat-treated,
• the present invention also relates to an electrical and/or electronic element housing, comprising a device as described previously and at least one, advantageously a plurality, of electrical and/or electronic element assembled in the device.
• electrical and/or electronic element means an element for storing electrical energy, for example a battery, a module or a battery cell, intended in particular for supplying an electric vehicle; a power electronics device; a semiconductor element; a constituent element of a computer server; or any other electronic and/or electrical element requiring thermal regulation during its operation.
• the present invention also relates to a thermal regulation system comprising at least the thermal regulation device as previously described, a dielectric fluid circulating in a dielectric fluid circuit, at least one member for circulating the dielectric fluid in the fluid circuit dielectric and can advantageously comprise a heat transfer fluid circulating in a heat transfer fluid circuit and at least one means for circulating the heat transfer fluid in the heat transfer fluid circuit.
• Said members and means for circulating dielectric fluid and heat-transfer fluid respectively can be pumps.
• the thermal regulation system comprises at least a plurality of connection pipes configured to connect the circulation member with the inlet mouth and/or the outlet mouth of the dielectric fluid or to connect the circulation means with the heat transfer fluid circulation conduit of the heat exchanger(s), the system can also comprise electrical connection means in the case where the thermal element is for example a resistive element.
• FIG 1 shows a thermal regulation system comprising at least one regulation device according to the invention
• FIG 2 represents a schematic view of the thermal regulation device according to a first embodiment of the invention
• FIG 3 represents a schematic view of the thermal regulation device according to a second embodiment of the invention
• FIG 4 represents a schematic view of the thermal regulation device according to a third embodiment of the invention.
• FIG 5 shows an exploded perspective view of a housing and a cover of the thermal regulation device as illustrated in one of Figures 2 to 4;
• FIG 6 is a sectional view, taken along a first longitudinal plane, of the thermal regulation device as illustrated in one of Figures 2 to 4;
• FIG 7 is a sectional view, taken along a second longitudinal plane, of the thermal regulation device as illustrated in one of Figures 2 to 4;
• the longitudinal direction will be represented by the axis Ox while the axes Oy and Oz will respectively represent the vertical and transverse directions. These axes together define an xyz trihedron shown in the figures requiring it.
• the qualifiers “high” or “upper” will be represented by the positive direction of the axis Oy, the qualifiers “low” or “lower” being represented by the negative direction of this same axis Oy.
• FIG. 1 schematically represents a thermal regulation system 1 comprising at least one thermal regulation device 3 associated with an electrical storage device, comprising one or more electrical or electronic components whose temperature must be regulated, for example reduced.
• the thermal regulation system 1 comprises a first loop 7 of dielectric fluid (FD) and a second loop 333 of heat transfer fluid (FR).
• the first loop 7 comprises at least one member 11 for circulating the dielectric fluid, such as a pump, and may for example here comprise a storage tank, or expansion vessel 13 of said fluid. Also, the first loop 7 comprises at least one dielectric fluid circuit 15 allowing the circulation of the dielectric fluid, here schematically represented by a first dotted line, said dielectric fluid circuit 15 being formed at least partially in the thermal regulation device 3.
• the second loop comprises at least one means 17 for circulating the refrigerant fluid, such as a pump, and at least one storage tank 19 of said fluid.
• the second loop comprises at least one heat transfer fluid circuit 21, allowing the circulation of the heat transfer fluid and being formed at least in part in the thermal regulation device 3 and represented by a second dotted line.
• the heat transfer fluid circuit 21 can extend at least partly into at least one heat exchanger 9, 91,92,23.
• the thermal regulation device 3 is thus configured to implement at least one thermal exchange between the dielectric fluid circulating in the dielectric fluid circuit 15 and the heat transfer fluid circulating in the heat transfer fluid circuit 21, as will be described in more detail below.
• the thermal regulation device 3 comprises at least one housing 25.
• the thermal regulation device 3 comprises, at least the dielectric fluid circuit 15 configured to allow the circulation of a dielectric fluid and the heat transfer fluid circuit 21 configured to allow the circulation of a heat transfer fluid.
• the box 25 comprises a plurality of side walls 29 which emerge from a common bottom wall 31 and extend along the vertical direction Oy defined by a vertical axis 100. It can be made of a composite plastic material and heat resistant which can, for example, be consolidated with carbon fibers or aluminum fibers.
• the side walls 29 and the bottom wall 31 of the casing 25 thus delimit a housing 500 of the thermal regulation device 3, in which extends at least the electrical component 5 whose temperature must be regulated.
• the housing 25 is essentially parallelepipedic in shape and comprises four side walls 29, a main dimension of the housing 25 extending parallel to a longitudinal axis 200 of the longitudinal direction Ox. It is nevertheless understood that the shape of the housing 25 is in no way limiting and that it may for example include more side walls 29.
• the housing 25 comprises a plurality of orifices 37 for spraying the dielectric fluid.
• Said spray orifices 37 consist of through orifices, here circular, arranged in the side walls 29 and/or in the bottom wall 31.
• the orifices may comprise spray nozzles (not shown here).
• FIGS. 2 to 7 schematically represent a thermal regulation device 3 for at least one electrical and/or electronic component 5 whose temperature must be regulated, the thermal regulation device 3 comprising at least one housing 25 comprising a plurality of walls delimiting a housing 500 intended to receive said electrical and/or electronic component 5, the device 3 further comprising a dielectric fluid circuit 15 configured to allow the circulation of a dielectric fluid, and at least one of the walls 29 of the casing 25 comprises at least one spray orifice 37 for the dielectric fluid in the housing 500, the spray orifice 37 fluidly connected to the dielectric fluid circuit, the dielectric fluid circuit 15 comprising a section 30 formed within one of the walls 29,31 of the casing 25, the section of the dielectric fluid circuit further receives a thermal element 9, 91, 92 intended to exchange heat with the fl dielectric fluid circulating in the dielectric fluid circuit 15.
• the walls 29, 31 of the casing 25 which house the section 30 of the dielectric fluid circuit comprise an internal casing 314 and an external casing 315, delimiting the section.
• the thermal element 9,91,92 is arranged at least partially between the inner envelope 314 and the outer envelope 315.
• the section 30 is included in a cavity 316 delimited by the internal envelope 314 and the external envelope 315, the thermal element 9, 91, 92 extending at least partially into this cavity 316.
• the recovery cavity 73 is formed between the outer casing 315 forming a bottom face 318 of the device and the inner casing 314 forming a bottom face 501 of the housing 500.
• the inner envelope 314 is perforated with at least one advantageously a plurality of orifices 67 allowing the dielectric fluid to flow into said recovery cavity 73.
• the thermal element 92 is arranged in the recovery cavity 73.
• the thermal element 92 is a heat exchanger intended to be crossed by a heat transfer fluid from the second circuit 21.
• a thermal element 91 is arranged in the distribution rail 59 and a thermal element 92 is arranged in the recovery cavity 73.
• the thermal element 92 is a heat exchanger intended to be traversed by a heat transfer fluid.
• the thermal element 91 can also be a heat exchanger intended to be traversed by a heat transfer fluid.
• the first thermal element 91 and/or the second thermal element 92 can be a resistive element.
• thermal element is arranged in the distribution ramp 59.
• FIGS. 2 to 4 describe 3 different embodiments of a device according to the invention. Indeed, these embodiments differ by the location of the thermal element 9.
• FIG. 2 presents a first embodiment in which the thermal element 9 is a heat exchanger 92 having at least one duct in which a heat transfer fluid coming from the heat transfer fluid circuit 21 is intended to circulate.
• the heat exchanger 92 extends into the recovery cavity 73 and thus makes it possible to directly cool the dielectric fluid coming from the housing 500 and recovered in the recovery cavity 73 through the evacuation orifices or perforations 67.
• the evacuation orifices 57 are formed in the inner casing 314 at the level of the bottom wall 31 of the casing 25.
• the section 30 of the dielectric fluid circuit formed in the wall comprises at least one distribution ramp 59 formed in the wall and opening onto the spray orifice 37 and/or comprises a recovery cavity 73 arranged in a bottom wall 31 of the device and arranged to recover dielectric fluid accumulating in this bottom.
• upper edges 33 of side walls 29 are configured to cooperate with a cover (not shown) intended to close the box on its upper face.
• a cover (not shown) intended to close the box on its upper face.
• these comprise, for example, at least one means 35 for fixing said cover to the housing 25.
• this cover may consist of a flat element configured to cooperate with the housing 25 or of a shaped element and of dimensions similar to those of the box 25.
• the spray orifices 37 are arranged in series along the transverse direction Oz so as to form two rows of spray 39 superimposed with respect to each other in the vertical direction, and extending parallel to each other. others.
• the spray rows 39 are arranged at recesses 41 of the primary side walls 291.
• the recesses 41 can be made by thermoforming or by stamping and form a substantially parallelepipedic structure which extends towards the housing 500, the various orifices 37 forming the rows of spray 39 being arranged at the level of a bottom of said recess 41, that is to say at the level of the internal envelope extending inside the housing 500.
• the thermal regulation device 3 comprises at least one row of additional projections 43 provided in the bottom wall 31. It is appropriate it should be noted that the thermal regulation device 3 may, without departing from the context of the invention, at the level of the bottom wall 31, be devoid of said additional projection row 43.
• the outer envelope is formed at least partially, in this embodiment, by a cover 27 consisting of an added part molded onto the housing 25. Therefore, the cover 27 has a structure at least partially complementary to that of the housing 25 .
• the cover 27 has a “U” structure. It comprises a base 45 and two side panels 47 emerging from said base 45 in a direction which is substantially perpendicular thereto. Similar to the case 25, the cover 27 can be made of a composite and heat-resistant plastic material which can, for example, be consolidated with carbon fibers or aluminum fibers.
• the cover 27 When it is assembled on the casing 25, the cover 27 can be held integral with said casing 25 by welding, gluing or by means of at least one fixing device such as a screw-nut system.
• the base 45 of the cover 27 then extends facing the internal envelope 314 at the level of the bottom wall 31 of the housing 25, while the side panels 47 of the cover 27 here extend opposite the internal envelope. 314 at the primary side walls 291 of said housing 25.
• the cover 27 and the casing 25 are particularly configured so as to form part of the dielectric fluid circuit 15, a cavity 316 or intermediate volume 250, included between the internal and external envelopes, forming at least one space of circulation of the dielectric fluid.
• This intermediate volume 250 will be further detailed below.
• the dielectric fluid circuit 15 comprises a supply pipe 49, configured to supply the dielectric fluid to at least one of the spray orifices 37 of the dielectric fluid , and two evacuation pipes 51.
• the number of supply pipes 49 or evacuation 51 is in no way limiting and may be modified, so, for example, that the device for thermal regulation 3 comprises a plurality of supply pipes 49 or, alternatively, so that it comprises a single evacuation pipe 51.
• the section 30 comprises a supply pipe 49, formed between the inner casing 314 and the outer casing 315, forming the fluidic connection between an inlet mouth 57 of dielectric fluid and the distribution ramp 59.
• the section 30 includes an evacuation pipe 51 forming the fluidic connection between the evacuation cavity 73 and an outlet mouth 71.
• the supply line 49 is formed between the inner casing and the outer casing.
• the outer envelope, formed in this embodiment by the cover 27 comprises at least one gutter, called the primary gutter 53, which participates in forming said supply pipe 49.
• the primary gutter 53 consists of a depression made in the cover 27, by stamping or thermoforming for example, configured to direct and limit the circulation of the dielectric fluid in the housing 25 of the thermal regulation device 3.
• the primary gutter 53 illustrated extends over a longitudinal length 530 of the base 45 of the cover 27, along the longitudinal direction Ox, and partly in the side panels 47 of the cover 27, parallel to the vertical axis 100 so that, when the cover 27 and the casing are assembled, the supply line 49 extends along the primary side walls 291 and the bottom wall 31 of the housing.
• the cover 27 comprises, at one of its side panels 47 hereinafter called first side panel 55, at least one inlet mouth 57 for the dielectric fluid, fluidly connected to the supply line 49 formed between the cover 27 and the housing 25.
• the dielectric fluid is fed into the thermal regulation device 3 through the inlet 57 arranged projecting from the cover 27, then is able to circulate in the supply line 49.
• the supply line 49 extends in the thermal regulation device 3 so as to fluidically connect the inlet 57 to at least one of the spray orifices 37 of the dielectric fluid for the projection of the dielectric fluid. in the housing 500, in particular on the electrical component 5.
• the primary gutter 53 is arranged so as to extend at least in part facing at least one of the recesses 41 of the inner casing 314 comprising at least one of the spray rows 39.
• each of the recesses 41 forms a ramp 59 for distributing the dielectric fluid to a plurality of spray orifices 37, for example one or more rows of spray 39, that is to say that the recesses 41 form circulation and distribution volumes of the dielectric fluid so as to supply spray orifices 37 which can be arranged at a distance from the supply pipe 49.
• the thermal regulation device 3 can thus comprise one or more distribution ramps 59 in each of its primary side walls 291 opposite.
• each of the primary side walls 291 comprises two distribution ramps 59, each housing a projection row 39 of spray orifices 37.
• the perforation 67 is arranged in the inner envelope 314 at the level of the bottom wall 31 of the casing 25 and provides the fluidic connection between the housing 500, delimited by the walls 29, 31 of the casing 25, and the cavity 316 at the level of the bottom wall, which extends between the inner envelope 314 and the outer envelope 315.
• the thermal regulation device 3 comprises a plurality of perforations 67.
• the bottom wall 31 comprises two subsets of perforations 67 arranged on either side of the additional projection row 43, said perforations 67 being particularly arranged so as to be fluidically connected to at least one of the evacuation pipes 51.
• at least one of the evacuation pipes 51 can be fluidically connected to a plurality of cavities 73 for recovery.
• the present invention proposes a thermal regulation system comprising at least one device for thermal regulation of at least one electrical component such as an electrical storage device.
• the thermal regulation device according to the present invention thus advantageously allows the simplification of the complete thermal management system and in particular of the circulation and the projection of the dielectric fluid on the at least one electrical component housed within the thermal regulation device.
• the invention cannot however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configuration and to any technical combination operating such means.
• the location of the spray rows, their number as well as the number of spray orifices or their shape may be modified without harming the invention, insofar as the thermal regulation device, in fine, performs the same functionality as described in this document.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Cooling Or The Like Of Electrical Apparatus (AREA)

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• 2021
  • 2021-06-17 FR FR2106429A patent/FR3124316B1/fr active Active
• 2022
  • 2022-06-10 US US18/571,475 patent/US20240291070A1/en active Pending
  • 2022-06-10 EP EP22733393.7A patent/EP4356058A1/de active Pending
  • 2022-06-10 WO PCT/EP2022/065873 patent/WO2022263326A1/fr active Application Filing
  • 2022-06-10 CN CN202280052476.2A patent/CN117716193A/zh active Pending

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