Classifications

• • 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
  • H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
• • 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
  • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
  • H01M10/647—Prismatic or flat cells, e.g. pouch 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
  • H01M10/655—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
• • 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
  • H05K7/20254—Cold plates transferring heat from heat source to coolant

Definitions

• the field of the present invention is that of the heat treatment of electrical and/or electronic components liable to heat up during their operation. More particularly, the present invention relates to the thermal regulation of electrical and/or electronic components in various fields of application such as computer servers or motor vehicle batteries.
• thermal regulation is meant here both cooling of the electrical and/or electronic component concerned and preheating of this component, such preheating making it possible to facilitate starting of the electrical and/or electronic component in question.
• these batteries tend to heat up during use, and electric and hybrid vehicles are thus equipped with thermal regulation devices configured to operate heat exchanges with these batteries in order to discharge their calories.
• These heat exchangers are generally made up of rigid metal plates which delimit conduits for the circulation of a heat transfer fluid suitable for capturing calories from the batteries.
• thermal regulation devices are also not very effective, or not at all, when it comes to thermally treating miniaturized electrical components such as those that can be found in computer servers for example.
• materials used to manufacture these heat exchangers are very heavy and the heat exchangers obtained are also bulky.
• the present invention falls within this context by proposing a heat treatment system for an electrical and/or electronic element which incorporates heat exchangers that are lighter than the heat exchangers of the prior art, but which have thermal performance at least equivalent.
• An object of the present invention thus relates to a heat treatment system for at least one electrical and/or electronic element, comprising at least one casing in which is received at least one heat exchanger, the electrical and/or electronic element being adapted to be received in the housing and to rest on F at least one heat exchanger, the heat exchanger comprising at least one network of microfibers, the microfibers being adapted to be traversed by a refrigerant fluid and the heat exchanger being adapted to be in contact with at least two adjacent faces of the electric and/or electronic element.
• microfiber means a hollow tubular structure adapted to be traversed by the refrigerant fluid.
• the heat exchanger is thus configured to effect a heat exchange between the refrigerant fluid which circulates in the micro fibers and the electrical and/or electronic element which rests on this heat exchanger.
• these microfibers can be made of a polymer which gives them deformability, that is to say the ability to undergo and resist mechanical stresses without undergoing deterioration.
• this deformability of the micro fibers makes it possible to ensure optimized plating of the micro fibers against the electrical and/or electronic element, thus optimizing the available heat exchange surface and therefore the heat exchange actually carried out.
• this deformability of the micro fibers makes it possible to ensure contact of the heat exchanger with the two adjacent faces of the electrical element and/or electronics, also optimizing the heat exchange between these elements, that is to say improving the cooling of the electrical and/or electronic element.
• the term “resting” means the fact that the heat exchanger is adapted to mechanically support the electrical and/or electronic element. In other words, the heat exchanger is at least partially rigid.
• the heat exchanger comprises the network of microfibers at least partially surrounded by a deformable material. It is understood from the foregoing that, according to this example of implementation of the invention, this material is deformable but strong enough to support the weight of the electrical and/or electronic element which is intended to rest on this heat exchanger , without suffering any deterioration.
• the heat exchanger comprises at least one rigid element.
• the term "rigid element” means an element of sufficient rigidity to support an electrical and/or electronic element.
• the deformable material may comprise the rigid element.
• the rigid element can be adapted to be interposed between the heat exchanger and the electrical and/or electronic element.
• the rigid element can take the form of a metal plate.
• the rigid element can be an aluminum plate.
• the heat treatment system comprises two heat exchangers, at least one electric and/or electronic element being intended to rest, respectively, on each of these heat exchangers, each heat exchanger comprising at least a network of microfibers and each heat exchanger being adapted to be in contact with at least two adjacent faces of the electrical and/or electronic element which is intended to rest on it.
• At least one of the faces of one of the electrical and/or electronic elements adapted to be covered by one of the heat exchangers is intended to be arranged facing one of the faces of the other electrical and/or electronic element adapted to be covered by the other heat exchanger.
• such an arrangement makes it possible to create a thermal barrier between two juxtaposed electrical and/or electronic elements, thus avoiding a transfer of calories between these two electrical and/or electronic elements which would reduce the effectiveness of the cooling operated by the heat exchangers which are adapted to form a support for these electrical and/or electronic elements.
• the heat exchanger comprises at least one first network of microfibers and at least one second network of microfibers distinct from the first network of microfibers, the first network of microfibers being suitable for s extend, mainly, opposite a first face of the electrical and/or electronic element and the second network of micro fibers being adapted to extend, mainly, opposite a second face of the electrical element and / or electronic, the first face of the electric and / or electronic element being adjacent to the second face of this electric and / or electronic element.
• the first network of micro fibers extends mainly in a first plane and the second network of micro fibers extends mainly in a second plane, the first plane being able to be perpendicular to the second plane.
• the first plane and the second plane intersect each other.
• the heat exchanger may comprise a single network of micro fibers, the micro fibers of this single network of micro fibers each extending in a first plane and in a second plane secant from each other.
• the same microfiber is intended to be arranged opposite, at the same time, the two adjacent faces of the electrical and/or electronic element adapted to be covered by the heat exchanger.
• the same micro fiber thus comprises at least a first portion adapted to be arranged opposite a first face of the electrical and/or electronic element and at least a second portion adapted to be arranged opposite a second face of the electrical and/or electronic element, the second face being adjacent to the first face.
• the heat exchanger can extend over an entire longitudinal dimension of the electrical and/or electronic element intended to rest on it.
• the term “longitudinal dimension” means a dimension of the electrical and/or electronic element concerned measured parallel to a main axis of extension of this electrical and/or electronic element.
• the first face of the electric and/or electronic element and the second face of the electric and/or electronic element may have a substantially longitudinal junction edge, the heat exchanger on which the electric element and/or or electronic is intended to rest being configured to extend over an entire longitudinal dimension of this electrical and/or electronic element.
• the microfibers of the network of microfibers are arranged regularly within the heat exchanger.
• the microfibers of the network of microfibers are arranged randomly within the heat exchanger.
• the housing receives at least one fluid supply base of the heat exchanger, the heat exchanger being configured to effect a heat exchange between the refrigerant fluid and the electrical element and/ or electronic, the power supply base being configured to allow the routing, and/or the evacuation respectively, of the refrigerant fluid into, and/or respectively out of, the micro fibers of the heat exchanger.
• the power supply base is made in one piece with the case. In other words, the power supply base and the box then form a single assembly which cannot be separated without causing damage to the power supply base and/or the box.
• each micro fiber of the heat exchanger comprises at least one inlet pass and at least one outlet pass, the inlet passes of the micro fibers being fluidically connected to a manifold of inlet configured to distribute the refrigerant fluid within the micro fibers and the outlet passes of the micro fibers being fluidically connected to an outlet header box configured to collect the refrigerant fluid which leaves the micro fibers.
• all the inlet passes of all the microfibers of the heat exchanger can be fluidically connected to the same inlet manifold and all the outlet passes of all the microfibers of the heat exchanger can be fluidically connected to the same outlet manifold.
• the inlet header box is fluidly connected to the supply base and the outlet header box is fluidically connected to the supply base.
• the supply base comprises at least one supply zone configured to supply the inlet manifold with refrigerant fluid and at least one collection zone configured to collect the refrigerant fluid which leaves the outlet manifold.
• the supply base can be configured to be fluidically connected to a plurality of inlet manifolds and to a plurality of outlet manifolds.
• the present invention advantageously makes it possible to "connect”, that is to say to put in fluidic communication, a plurality of manifolds, that is to say a plurality of heat exchangers, on the same power base, this power base itself being integral with the housing of the heat treatment system.
• the present invention allows implementation of the heat treatment system to be rapid and easily adaptable to different configurations.
• the heat treatment system can thus comprise a plurality of heat exchangers distributed over at least two rows, the supply base extending between the two rows of heat exchangers. It is understood that, according to this example, each heat exchanger of each of the two rows of heat exchangers is fluidly connected to the supply base via at least one inlet header box and at least one outlet manifold.
• the present invention also relates to an electrical energy storage device comprising at least one electrical energy storage device and at least one heat treatment system as mentioned above and in which the at least one electrical element and / or electronics which rests on the at least one heat exchanger of the heat treatment system is an electrical energy storage device.
• the present invention also relates to a vehicle comprising at least one electrical energy storage device as mentioned above.
• a vehicle comprising at least one electrical energy storage device as mentioned above.
• FIG. 1 schematically illustrates a vertical sectional view of a heat treatment system for an electrical and/or electronic element according to a first embodiment of the invention
• FIG. 2 illustrates, schematically in perspective, the heat treatment system according to a second embodiment of the invention, the heat treatment system being represented in cooperation with a plurality of electrical and/or electronic elements;
• FIG. 3 illustrates, schematically in perspective, a heat exchanger of the heat treatment system according to the invention
• FIG. 4 illustrates, schematically, a view in vertical section of a heat exchanger of the heat treatment system according to the first example embodiment illustrated with a fluid supply base of this heat treatment system.
• a longitudinal direction corresponds to a direction parallel to the longitudinal axis L
• a vertical direction corresponds to a direction parallel to the vertical axis V
• a transverse direction corresponds to a direction parallel to the transverse axis T
• the longitudinal axis L, the vertical axis V and the transverse axis T being perpendicular two by two.
• a vertical section corresponds to a section made according to a vertical and transverse plane, that is to say a plane in which the vertical axis V and the transverse axis T of the trihedron shown are inscribed.
• this heat treatment system 100 being suitable for heat treating at least one electrical and/or electronic element 120.
• the figures on which the description is based which follows give a example of application of the invention in which the electric and/or electronic element 120 is an electric energy storage device, but it is understood that the description applies mutatis mutandis to any other electric element and/or or electronics 120 adapted to be heat treated by a heat treatment system according to the invention.
• this electrical and/or electronic element can be an electrical component of a computer server.
• FIG. 1 is a vertical sectional view of the heat treatment system 100 according to the invention.
• This heat treatment system 100 comprises a housing 110, a peripheral wall 111 of which defines an internal volume 112 closed by a cover 113, this internal volume 112 receiving, at least one electrical and/or electronic element 120, at least one heat exchanger 130 on which the at least one electric and/or electronic element 120 rests, that is to say that this electric and/or electronic element 120 is at least partially supported by the at least one heat exchanger 130, and at least least one fluidic supply base 140 of the heat exchanger 130.
• the heat treatment system 100 comprises at least two heat exchangers 130 which receive, respectively, an electric and/or electronic element 120.
• an electric and/or electronic element 120 rests on each of the exchangers heat exchanger 130.
• the following description is aimed at a heat exchanger 130 and the electrical and/or electronic element 120 which rests on this heat exchanger 130 but it is understood that, unless otherwise indicated, it applies to the whole heat exchangers 130 and electrical and/or electronic elements 120 of the heat treatment system 100 according to the invention.
• the references given to one of the electrical and/or electronic elements 120 and to one of the heat exchangers 130 can be directly transposed to the other.
• the heat exchanger 130 is thus configured to perform a heat exchange between a refrigerant fluid and the electrical and/or electronic element 120 which rests on it.
• a refrigerant fluid circulates in the heat exchanger 130, this refrigerant fluid being capable of transporting calories and exchanging them with its environment, in this case with the electrical and/or electronic element 120 which rests on this heat exchanger 130.
• this heat exchange can be achieved by means of a refrigerant fluid which may or may not change state during the exchange of calories.
• the heat exchanger 130 is equipped with at least one inlet manifold configured to distribute the refrigerant fluid in the heat exchanger 130 and at least one outlet manifold configured to collect the refrigerant that leaves this heat exchanger.
• these inlet and outlet manifolds are moreover fluidly connected to the supply base 140.
• this supply base 140 is made in one piece with the housing 110.
• the housing 110 power supply 140 form a single assembly which cannot be separated without causing damage to the housing 110 and/or the power supply base 140.
• this supply base 140 is divided into a supply zone 141 configured to allow the routing of the refrigerant fluid to at least one inlet manifold of the heat exchanger 130 and at least one collection zone 142 configured to collect the refrigerant which leaves the outlet header box of this heat exchanger 130.
• this supply zone 141 and of this collection zone 142 is very schematic in Figure 1 and should not be construed as limiting the invention.
• this supply zone 141 and this collection zone 142 can be arranged according to any arrangement without departing from the context of the present invention, provided that the inlet header box and the outlet header box of the heat exchanger 130 can be fluidly connected thereto.
• the heat exchanger 130 comprises at least one network of microfibers 150 fluidically connected to the supply base 140 via the inlet and outlet manifolds mentioned above.
• the heat exchanger 130 comprises a plurality of microfibers 151, each fluidly connected to the supply base 140, via the inlet and outlet header boxes mentioned above.
• These micro fibers 151 are shown very schematically and enlarged in Figure 1.
• These micro fibers 151 are configured to be traversed by the refrigerant fluid and form a heat exchange surface of the heat exchanger, that is to say a zone of this heat exchanger 130 within which performs the heat exchange discussed above.
• the term "micro fiber” means a hollow tubular structure of constant or substantially constant section.
• Each micro fiber has a section whose main dimension is between 0.5 mm and 1.5 mm.
• main dimension is meant a longest dimension of the section of the microfiber concerned.
• the diameter of the section is referred to as the “main dimension”.
• the term “main dimension” is understood to mean a diagonal of this section.
• each microfiber has a main dimension of less than 1 mm.
• the use of such a material gives each microfiber sufficient mechanical strength and chemical resistance to withstand the stresses to which they are subjected, in particular the stresses associated with temperature variations, the circulation of refrigerant fluid and the support of the electrical and/or electronic element 120.
• such a material makes it possible to give the microfibers characteristics of flexibility and deformability, so that they can be deformed without their integrity being impacted.
• this deformation capacity makes it possible to increase the contact surface between the micro fibers 151 and the electrical and/or electronic element 120, and thus to increase the available heat exchange surface, optimizing thus the heat exchange operated.
• the micro fibers 151 are also at least partially surrounded by a deformable material. According to the example illustrated, these microfibers 151 are totally surrounded by this deformable material.
• the deformable material can be silicone. This material makes it possible to protect the microfibers 151 of the heat exchanger 130, while allowing these microfibers 151 to retain their deformability.
• the heat exchanger 130 is arranged in contact with at least two adjacent faces of the element electric and/or electronic 120 which rests on it.
• the term “adjacent faces” means two faces which have at least one junction edge 125.
• at least one of the faces of one of the electrical and/or electronic elements 120 covered by the heat exchanger 130 is arranged facing one of the faces of the other electrical and/or electronic element 120 covered by the other heat exchanger 130.
• Such an arrangement makes it possible to avoid heat transfer between two electrical and/or electronic elements or electronics 120 facing each other.
• the calories given off by the faces of the electrical and/or electronic elements 120 not covered by the heat exchangers can for their part be evacuated via the peripheral wall 111 of the casing 110.
• the casing 110, and particularly the peripheral wall 111 of this casing 110 can be made of a thermally conductive material.
• the heat exchanger 130 can comprise a rigid element which makes it possible to reinforce its mechanical properties, in order to ensure sufficient support for the electrical and/or electronic element 120 concerned.
• this rigid element is formed by the deformable material which surrounds the micro fibers 151.
• the deformable material has, in itself, sufficient rigidity to support said electrical and/or electronic element 120.
• a rigid plate between the electrical and/or electronic element 120 and the heat exchanger 130 on which it rests.
• a plate made of a thermally conductive material such as a metal, for example aluminum.
• the heat exchanger 131 comprises a single network of micro fibers 150 while in a second variant, the heat exchanger 132 comprises a first network of micro fibers 150a and a second network of micro fibers 150b.
• the single network of microfibers 150 has a substantially L-shaped general shape.
• each microfiber 151 is folded so as to be arranged facing, simultaneously, a first face 121 of the electrical and/or electronic element 120 and a second face 122 of this electric and/or electronic element 120, the first face 121 and the second face 122 being adjacent.
• each micro fiber 151 comprises at least a first portion 152 which extends mainly in a first plane PI and at least a second portion 153 which extends in a secant second plane P2 of the first plane PI.
• the first plane PI is more particularly perpendicular to the second plane P2.
• each microfiber 151 is thus arranged facing the first face 121 of the electrical and/or electronic element 120 and that the second portions 153 of each microfiber 151 are arranged facing the second face 122 of the electric and/or electronic element 120 .
• the coolant which circulates in the first portions 152 of each microfiber 151 makes it possible to evacuate the calories emitted by the first face 121 of the electrical and/or electronic element 120 and the coolant which circulates in the second portions 153 of these microfibers 151 allow the calories emitted by the second face 122 of the electrical and/or electronic element 120 to be evacuated. micro fibers 151.
• the first network of microfibers 150a extends mainly in the first plane PI and the second network of microfibers 150b extends mainly in a secant second plane P'2 of the first plane PI.
• the second plane P'2 is perpendicular to the first plane PI.
• the microfibers 150 of the first network of microfibers 150a are thus arranged facing the first face 121 of the electric and/or electronic element 120 concerned and the microfibers 151 of the second network of microfibers 150b are arranged facing the second face 122 of this electrical and/or electronic element 120, this second face 122 being, as mentioned above, adjacent to the first face 121.
• the term “arranged opposite” means the fact that the microfiber or the portion of microfiber concerned faces the object mentioned, and that it is arranged at a minimum distance allowing it to capture calories. emitted by this object. It is therefore understood that the heat exchanger of the heat treatment system 100 according to the invention makes it possible, due to the deformability of the microfibers and of the deformable material which constitutes it, to generate a heat exchange surface maximum, thus ensuring cooling of the electrical and/or electronic element 120 optimized.
• FIG. 2 illustrates four electrical and/or electronic elements 120 adapted to be heat-treated by the heat treatment system 100 according to a second embodiment of the invention, these electrical and/or electronic elements 120 being represented in cooperation with the heat exchangers heat 130 on which they rest respectively.
• this second embodiment of the invention at least four faces of each electrical and/or electronic element 120 are covered by the heat exchanger 130 on which it rests.
• at least one heat exchanger is interposed between two electrical and/or electronic elements 120 juxtaposed.
• a thermal barrier is thus formed between two electrical and/or electronic elements 120 which face each other, so as to avoid a transfer of calories between these two electrical and/or electronic elements 120 which would result in an increase in their respective temperatures. .
• this thermal barrier improves the cooling of the electrical and/or electronic elements 120 thus arranged.
• the electrical and/or electronic elements 120 are more particularly distributed over at least a first row 123 and over at least a second row 124 and the power supply base 140 extends between the first row 123 and the second row 124.
• the heat exchangers 130 on which the aforementioned electric and/or electronic elements 120 rest are also distributed along this first row 123 and this second row 124.
• all of these heat exchangers heat 130 can be supplied by the same power base 140, regardless of the row on which they extend.
• the power supply base 140 is illustrated schematically but it is understood that this power supply base 140 is, as previously described, made in one piece with the box.
• each electrical and/or electronic element 120 extends mainly along a main longitudinal axis of extension X, the joining edge 125 between two adjacent faces of each electrical and/or electronic element 120 also extending parallel to this main axis of extension X.
• each heat exchanger 130 extends, at least on one side, over an entire longitudinal dimension of the electrical and/or electronic element 120 which rests on it .
• the heat exchanger 130 extends, at least, between two opposite faces along the main extension axis X of the electrical and/or electronic element 120 which rests on it.
• Figure 2 also makes the supply base 140 partially visible.
• at least one connector 143 is arranged at a longitudinal end of this supply base 140.
• this connector 143 makes it possible to convey refrigerant within the supply base 140, and more particularly within the supply zone formed in this supply base 140, so as to allow the supply of the inlet manifolds, then of the micro fibers of each exchanger heat to refrigerant.
• at least one other connector is formed on the power supply base 140, for example at a longitudinal end of the power supply base 140 opposite the longitudinal end on which the connector 143 is formed, this other connector being fluidly connected to the collection zone formed in the supply base 140.
• this other connector makes it possible to evacuate the refrigerant fluid which leaves the heat exchangers after having captured the calories emitted by the electrical elements and / or electronic 120.
• the two connectors could be arranged differently, for example on the same longitudinal end of the power base without departing from the context of the present invention.
• the connectors can be made in one piece with the housing and with the power supply base, that is to say that these connectors, the housing and the power supply base form a single assembly which cannot be separated without causing damage to at least one of the connectors and/or the housing and/or the power supply base.
• the heat exchanger 130 may comprise a single network of microfibers, or as many networks of microfibers 150 as the heat exchanger 130 covers of faces of the electric and/or electronic element 120 which rests on it.
• each heat exchanger 130 can include four networks of microfibers 150 independent of each other.
• each heat exchanger can comprise a single network of microfibers, each microfiber then being deformed so that at least a portion of each of them can be arranged facing one of the four faces concerned of the electrical element and /or electronic 120.
• the supply base 140 is arranged on a refrigerant fluid circuit - not illustrated here - which comprises at least one member for circulating the refrigerant fluid and at least one heat exchanger.
• the refrigerant thus leaves the supply base 140 warmed by a capture of calories emitted by the electrical and / or electronic elements 120 and it is then configured to join the heat exchanger, this heat exchanger being configured to operate a heat exchange allowing the refrigerant fluid to discharge the calories thus accumulated.
• the member for circulating the refrigerant fluid may be a pump or a compression member and the refrigerant fluid circuit may further comprise at least one expansion member.
• FIG. 3 illustrates, schematically and in perspective, a heat exchanger 130 according to the first embodiment illustrated in FIG. 1.
• this heat exchanger 130 is represented according to the second variant.
• the heat exchanger 130 comprises the first network of microfibers 150a and the second network of microfibers 150b which extend, respectively, in the first plane PI and in the second plane P'2 perpendicular to one another. the other.
• FIG. 3 illustrates a particular arrangement in which the microfibers 151 are regularly distributed within the heat exchanger 130.
• each microfiber 151 takes, according to the example illustrated, a U-shape.
• Each microfiber 151 comprises thus at least one inlet pass 154 whose free end is connected to the inlet manifold 133 and at least one outlet pass 155 connected to the outlet manifold 134.
• Only an entry pass and an exit pass are shown in their entirety for each network of micro fibers 150a, 150b but it is understood that the description given here applies to all microfibers 151 from each of the networks of microfibers 150a, 150b.
• all of the microfibers 151 of the two networks of microfibers 150a, 150b are connected to the same manifolds 133, 134.
• the inlet manifold 133 is configured to supply refrigerant the micro fibers of the first network of micro fibers 150a and the micro fibers of the second network of micro fibers 150b
• the outlet manifold 134 is configured to collect the refrigerant fluid which leaves the micro fibers of the first network of micro fibers 150a as well as the refrigerant fluid which leaves the microfibers of the second network of microfibers 150b.
• the inlet header box 133 and the outlet header box 134 are adapted to be fluidically connected to the supply base 140, and particularly the inlet header box 133 is adapted to be connected to the zone of supply of this supply base while the outlet header box 134 is adapted to be connected to the collection zone of this supply base. It is understood that this is only an exemplary embodiment of the invention and that provision may be made for each network of microfibers to be connected to an inlet header box and an outlet header box which connects to it. are specific, without departing from the context of the present invention. Also, FIG.
• FIG 3 illustrates a situation in which the inlet passes 154 open on one side of the heat exchanger while the outlet passes 155 open on another side of the heat exchanger, but it is understood that this is only an example and that all of the inlet passes 154 and the outlet passes 155 of the microfibers could emerge on the same side of the heat exchanger 130 without departing from the context of the invention.
• FIG. 4 finally illustrates, schematically, a heat exchanger 130 seen in a vertical section.
• This figure again makes visible an entry pass 153 of a microfiber 151 of the first network of microfibers 150a and an entry pass 153 of a microfiber 151 of the second network of microfibers 150b, a free end of each of these passes input 153 extending into the input manifold 133.
• this inlet manifold 133 is for its part inserted into the supply base 140, and more particularly, it extends through an orifice 144 which opens into the supply zone 141 of the supply base. power supply 140.
• a plurality of these orifices 144 is provided on the power supply base 140, these orifices 144 being distributed over an entire longitudinal dimension of the power supply base 140. It is understood that such a configuration advantageously makes it possible to connect and disconnect a plurality of inlet manifolds 133, that is to say a plurality of heat exchangers.
• all of the heat exchangers 130 of the heat treatment system according to the invention are supplied by the same supply base 140. If the number of heat exchangers and manifolds are lower than the number of orifices formed in the supply base 140, it suffices to seal, for example using a plug, the supernumerary orifices.
• the power supply 140 proposed here is standard and can be used for different cooling needs, thus allowing economies of scale.

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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)
• Cooling Or The Like Of Electrical Apparatus (AREA)

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• 2020
  • 2020-12-14 FR FR2013206A patent/FR3117729B1/fr active Active
• 2021
  • 2021-12-06 WO PCT/EP2021/084439 patent/WO2022128579A1/fr active Application Filing
  • 2021-12-06 EP EP21830981.3A patent/EP4260669A1/de active Pending
  • 2021-12-06 US US18/257,402 patent/US20240040742A1/en active Pending
  • 2021-12-06 CN CN202180083907.7A patent/CN116584160A/zh active Pending

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