EP4077011A1 - Compartment for equipment likely to emit heat - Google Patents

Compartment for equipment likely to emit heat

Info

Publication number
EP4077011A1
EP4077011A1 EP20828032.1A EP20828032A EP4077011A1 EP 4077011 A1 EP4077011 A1 EP 4077011A1 EP 20828032 A EP20828032 A EP 20828032A EP 4077011 A1 EP4077011 A1 EP 4077011A1
Authority
EP
European Patent Office
Prior art keywords
compartment
layer
fluid
cooling
bottom cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20828032.1A
Other languages
German (de)
French (fr)
Inventor
Thibaut PERRIN
Mohamed Ibrahimi
Sergio Da Costa Pito
Richard COTTET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP4077011A1 publication Critical patent/EP4077011A1/en
Pending legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric 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
    • H01M10/62—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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • 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 a compartment for equipment capable of giving off heat during its operation, in particular for an electrical energy storage device for a motor vehicle.
  • Patent applications US2017176108 and WO 2013056938 describe heat exchangers for cooling battery cells. Furthermore, patent application US 2011/0206967 A describes an example of such a battery.
  • the cells are stored in containers having housings for receiving the cells.
  • One wall of the containers, intended to be in contact with a wall of a neighboring container, has recesses forming part of a duct for the circulation of a heat transfer fluid.
  • the present invention aims in particular to improve the sealing of the compartments for receiving battery cells.
  • the present invention relates to a compartment for equipment capable of releasing heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one plate. cooling arranged to be traversed by a cooling fluid and arranged to cool said equipment, the compartment comprising a bottom cover comprising at least one layer of composite material and an additional layer of unreinforced polymer material, said additional layer being in particular impermeable to coolant.
  • One aspect according to the invention proposes that the case comprises two additional layers of unreinforced polymer material, said additional layers being in particular impermeable to the cooling fluid.
  • the composite material layer can be arranged between the two additional layers.
  • the housing further comprises a flame retardant layer made of a flame retardant material. We can also talk about a fire barrier.
  • the compartment comprises at least one channel for circulating a cooling fluid, this channel being obtained by molding of a polymer-based material, with assisted injection of a fluid, in particular assisted injection. of a gas or a liquid, to form this channel in the polymer-based material.
  • compartment for example to receive battery cells, which also has a function of cooling these cells, the manufacture of which is simplified.
  • Another aspect proposes that the formation of the coolant channel (s) in the polymer-based material by assisted injection of a liquid or a gas makes it possible to have a one-step manufacturing process, at the same time. instead of a multi-step process to form the channel (s) that would require soldering.
  • the invention makes it possible to avoid certain sealing problems linked to leaks of cooling fluid.
  • the channel or channels are formed by hollow shapes directly in the material, these leakage problems are avoided. Manufacturing operations are further simplified.
  • the channel has a seamless inner wall, as a result of the hollowing out of the polymer material by the fluid injected during molding.
  • the channel has a cylindrical shape, at least over part of its length, in particular with a rectangle or oval or round cross section.
  • the polymer-based material in which the channel is formed is bonded to a layer of polymer-based composite material.
  • connection is in particular the result of a molding, in particular overmolding or co-molding, between the material which comprises the channel or channels for the circulation of cooling fluid and this layer of composite material.
  • the composite material layer has an opening and the material that forms the channel passes through this opening so that channel also passes through this opening of the layer.
  • the material from which the channel is formed is in the form of a layer which extends over one side of the layer of composite material.
  • this layer of composite material and the layer are flat over at least part of their area.
  • these two layers have an edge inclined relative to this flat part, and the channel passes through the layer of material on this edge.
  • the channel in the material connects to a fluidic connection member, in particular on this inclined edge.
  • this fluidic connection member is molded from the material of the layer which comprises the channel.
  • the composite material layer comprises at least two channels resulting from assisted injection, these channels being called parallel over a major part of their length.
  • the compartment has a cooling plate disposed on one side of the composite material layer which is opposite to the side of the molded material layer.
  • the plate is arranged to be traversed by a cooling fluid also circulating in the channels. of the molded layer.
  • These channels are in particular feeder channels which respectively supply and evacuate the cooling fluid circulating in the plate.
  • a single feeder feed channel and a single feeder discharge channel are provided.
  • the layer which comprises the feeder channels comprises a connection portion made in one piece with the rest of the layer and which is arranged to be connected to the cooling plate. .
  • This connection portion protrudes through the layer of composite material.
  • the channels are formed only in the layer of molded material, in other words the channels are not formed by the assembly of two separate layers for example.
  • the layer comprises grooves to form the channels and reinforcing ribs, in particular in the shape of a honeycomb, for the mechanical reinforcement of the compartment.
  • the molded layer only partially occupies the outer face of the composite layer, and not all of this face.
  • This molded layer occupies, for example, less than 50% of the outer face of the layer, or even less than 25% thereof.
  • the invention also relates to an electrical energy storage module comprising a plurality of battery cells in particular arranged in a row, and a compartment as described above, the cells being placed in this compartment in thermal interaction with the cooling plate.
  • the invention also relates to a method of manufacturing a compartment for equipment capable of releasing heat during its operation as described above, the method comprising the step of forming a layer of base material. of polymer, with assisted injection of a fluid to form a channel in this layer.
  • a further subject of the invention is a compartment for equipment capable of releasing water. heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one cooling plate arranged to be traversed by a cooling fluid and arranged to cool said equipment, this compartment further comprising an upper housing arranged to receive said electrical equipment, and a lower housing in which is placed at least one fluid connection element for supplying the cooling plate with fluid, the lower and upper housings being isolated from each other by fluid-tight manner.
  • the cooling plate (s) separate the lower housing from the upper housing.
  • a plurality of cooling plates separate the lower housing from the upper housing, and these plates are arranged in parallel rows.
  • each cooling plate comprises a fluid inlet and a cooling fluid outlet each connected to one of the fluid connection elements, these fluid inlet and outlet are all tours in the lower accommodation.
  • conduits are provided within the cooling plates for the circulation of cooling fluid.
  • the bottom cover includes a coolant channel, and the fluid connection member is connected to this channel.
  • the bottom cover has a substantially planar main face.
  • this bottom cover defines with the cooling plates the lower housing.
  • the lower and upper housings cover substantially the same area. These housings thus have a stacked arrangement.
  • the bottom cover comprises at least one layer of composite material based on polymer, in particular plastic and thermoplastic.
  • the lower housing has, in free space, a height of less than 25%, in particular less than 15%, of the height of the upper housing.
  • a seal is disposed on a junction periphery between the lower housing and the upper housing.
  • the upper housing has at least one frame, including aluminum, which defines a perimeter of the upper housing, and the seal is in contact with this frame.
  • this frame comprises external bars forming a perimeter and partitions, in particular parallel to each other, to form receptacles each to receive a battery cell.
  • These partitions form for example two identical rows of several receptacles.
  • the cooling plates are assembled on the frame, for example by screwing or gluing.
  • one or more seals are provided between these bars and partitions of this frame, on the one hand, and the lower housing, on the other hand.
  • the seal (s) are disposed in a sealed manner between a zone of the frame and a zone of a cooling plate, and / or between a zone of the frame and a zone of the bottom cover.
  • the seal is made of an electrically conductive material so as to participate in an electromagnetic protection function (also called EMC or Electromagnetic Compatibility) of the upper housing receiving the electrical component.
  • EMC electromagnetic protection function
  • the upper cover is arranged to be applied against the frame to close the compartment, in particular with the interposition of a seal, in particular of electrically conductive material.
  • the invention makes it possible to have a total height of the compartment which is relatively low, which is advantageous given the size constraints.
  • the compartment can also be made in a simplified manner.
  • the top cover comprises a composite material based on plastic.
  • the invention also relates to an electrical energy storage device comprising a plurality of battery cells, in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this interacting compartment. thermal with the cooling plate.
  • FIG.1 is a schematic view of a compartment according to an example of the invention, from the side,
  • FIG.2 shows the compartment of [Fig.1], in section
  • FIG.3 is a schematic view of a compartment according to another example of the invention.
  • FIG.4 is a sectional view of the figure [Fig.3],
  • FIG.5 is another schematic view of figure [Fig.4]
  • FIG.6 is a sectional view of the compartment.
  • FIG. 1 There is shown in Figures 1 and 2 an electrical energy storage module 1 comprising a plurality of battery cells 9, visible in Figure 2, and a compartment 2.
  • This compartment 2 has two channels 3 for circulating a cooling fluid, visible in Figure 1, which are parallel.
  • This figure 1 shows the lower and outer face of the compartment 2.
  • This compartment 2 defines, with an upper cover not shown, a box 5 which contains the battery cells 9. The bottom of this box 5 is on this compartment 2.
  • Each channel 3 is obtained by molding a polymer-based material which may optionally include reinforcing fibers, with assisted injection of a fluid, in particular assisted injection of a gas or a liquid, to form this channel 3 in the polymer material.
  • the polymer-based material forms a first layer 8 of polymer material.
  • Each channel 3 has an internal wall 10 without joint, as the result of the hollowing out of the polymer-based material by the fluid injected during the molding.
  • Each channel 3 has a cylindrical shape, at least over part of its length, in particular with a rectangle or oval or round cross section.
  • composite material is meant a material comprising at least two different materials such as plastic and metal.
  • the preferred composite materials correspond to materials that are both robust and light at the same time.
  • Composite materials such as a blend of a thermoplastic with reinforcing fibers are particularly suitable for such use.
  • the composite material may correspond to polypropylene with glass and / or carbon fibers.
  • polypropylene corresponds to a light material and the glass and / or carbon fibers reinforce the structure of the case.
  • Polyamide-6 with glass fibers is also possible.
  • the composite material corresponds to reinforcing fibers pre-impregnated with a thermoplastic resin.
  • the first layer 8 in which and formed the channel is in the form of a layer which extends over one side of the second layer 11 of composite material.
  • the second layer 11 is flat over at least part of its surface in a flat region 17.
  • the first layer 8 and the second layer 11 have an inclined edge 15 with respect to this flat region 17, and the channel 3 passes into the first layer 8 on this edge 15.
  • Each channel 3 in the material is connected to a fluidic connection member 27, on this inclined edge 15.
  • Each fluidic connection member 27 is overmolded by the material of the first layer 8.
  • Compartment 2 has a cooling plate 20 disposed on one side 21 of the layer of composite material which is opposite to side 22 of the first layer 8.
  • the plate 20 is arranged to be traversed by a cooling fluid also circulating in the channels 3 of the layer.
  • These channels 3 are feeder channels which respectively feed and evacuate the cooling fluid circulating in the plate 20.
  • a single feeder feed channel and a single feeder outlet channel are provided.
  • the plate 20 is formed of two sub-plates 24 which, once assembled, form a circulation circuit 39 of cooling fluid.
  • the first layer 8 comprises connection portions 29 made in one piece with the rest of the layer and which are arranged to be connected to the cooling plate 20.
  • This connection portion 29 protrudes through the layer. made of composite material and is traversed by the associated channel 3 to bring this channel 3 to the plate 20.
  • This plate 20 is opposite the second layer 11.
  • the first layer 8 comprises grooves 33 to form the channels and reinforcing ribs 34, in particular in the shape of a honeycomb, for the mechanical reinforcement of the compartment 2.
  • the fluid for assisted injection may be water.
  • the first layer 8 only partially occupies the outer face of the second layer 11 of composite material, and not all of this face. This layer occupies for example less than 50% of the outer face of the second layer 11, or even less than 25% thereof.
  • Each channel 3 has a length of at least 5 cm, in particular at least 10 cm.
  • the composite material of the second layer 11 comprises glass fibers, optionally as a variant of carbon fibers or of another nature, pre-impregnated with a thermoplastic resin.
  • Compartment 2 has a raised edge 36 around its periphery.
  • the honeycomb structure 34 is outwardly of the housing 5.
  • the coolant used in this case can in particular be a liquid coolant based on carbon dioxide, such as R744 for example, 2, 3, 3, 3-tetrafluoropropene (or HFO-1234yf) or 1, 1, 1, 2-tetrafluoroethane (or R-134a).
  • the coolant can also be a nanofluid.
  • the coolant can still be water, possibly including additives.
  • the battery cells include, for example, a plurality of lithium-ion (Li-ion) batteries for use in a hybrid vehicle.
  • the plurality of battery cells are Li-ion batteries for use in a battery electric vehicle.
  • the cooling plate 20 forms a heat exchanger included in a cooling circuit, not shown, of the type comprising a compressor and other heat exchangers.
  • the plates are for example an assembly of two aluminum walls delimiting cooling fluid circulation ducts, taking the form of a meandering path, for example.
  • Compartment 2 and battery cells 9 together with other components form an electrical energy storage device 40 for a motor vehicle.
  • the first layer 8 and the second layer 11 form a bottom cover 88.
  • FIG. 3 to 5 There is shown in Figures 3 to 5 a compartment 80 for battery cells 9 of a motor vehicle according to another embodiment.
  • This compartment 80 comprising cooling plates 20 arranged to be traversed by a cooling fluid and arranged to cool the cells 9.
  • This compartment 80 further comprises an upper housing 81 arranged to receive the cells 9, and a lower housing 82 in which are placed fluid connection elements 83 for supplying the cooling plates 20 with fluid.
  • the lower 82 and upper 81 housings are insulated from each other in a fluid-tight manner.
  • the cooling plates 20 separate the lower housing 82 from the upper housing 81, as can best be seen in Figures 4 and 5.
  • a plurality of cooling plates 20 separate the lower housing 82 from the upper housing 81, and these plates 20 are arranged in parallel rows.
  • Each cooling plate 20 has a fluid inlet 84 and a coolant outlet 85 each connected to one of the fluid connection elements 83, these fluid inlet and outlet 84 and 85 are all turned in the lower housing 82. [100] Thus in the event of a leak at these inlet and outlet 84 and 85, the cooling fluid flows into this lower housing 82 and not into the upper housing 81 so as to preserve the battery cells.
  • Ducts are provided within the cooling plates for the circulation of cooling fluid 20.
  • the compartment 80 has a bottom cover 88 comprising coolant channels 3 like those described in the previous example.
  • the fluid connection elements 83 are connected to these channels 3 being for example formed by an extension of material which also forms the channels 3. These channels 3 are produced by assisted injection of fluid into the first layer 8 of material in polymer, as described in the previous example.
  • the bottom cover 88 has a substantially planar main face 89.
  • This bottom cover 88 defines with the cooling plates 20 the lower housing 82.
  • the lower 82 and upper 81 dwellings cover substantially the same area. These housings 81 and 82 thus have an arrangement stacked vertically when the assembly is mounted on the vehicle.
  • the bottom cover 88 comprises a layer of composite material based on polymer and more particularly plastic and thermoplastic.
  • the lower housing 82 has, in free space, a height h less than 25%, in particular less than 15%, of the height H of the upper housing.
  • Seals 90 are arranged on a junction periphery 91 between the lower housing 82 and the upper housing 81.
  • the upper housing 81 comprises an aluminum frame 93, which defines a periphery 95 of the upper housing, and the seal 90 is in contact with this frame 93.
  • This frame 93 comprises external bars 94 forming a perimeter and partitions 96, which forms a grid, to form receptacles 97 each to receive a battery cell. These partitions 96 form for example two identical rows of several receptacles 97. [112]
  • the bars 94 are in particular in a honeycomb structure. These bars are made of steel or aluminum, for example.
  • the cooling plates 20 are assembled on the frame 93, for example by screwing or gluing.
  • the seals 90 are provided between these bars 94 and partitions 96 of this frame, on the one hand, and the lower housing 82, on the other hand.
  • the gaskets 90 are disposed in a sealed manner between a zone of the frame 93 and a zone of a cooling plate 20, and / or between a zone of the frame 93 and a zone of the cover background 88.
  • Each seal 90 is made of an electrically conductive material so as to participate in an electromagnetic protection function of the upper housing 81 receiving the cells.
  • An upper cover 98 is arranged to rest against the frame 93 to close the compartment, with the interposition of seals 90.
  • the top cover 98 comprises a composite material based on a polymer material, and in particular has a substantially flat shape.
  • the feeder channels 3 are in particular turned towards the lower housing 82.
  • the invention relates to the sealing of the compartment 2.80 and in particular the sealing of the bottom cover 88.
  • the bottom cover 88 corresponds to a multilayer structure comprising at least one layer 100 of composite material and an additional layer 102 of unreinforced polymer material.
  • the additional layer 102 of unreinforced polymer material corresponds for example to plastic or other thermoplastic without any reinforcing fiber.
  • the additional layer 102 is preferably impermeable to the cooling fluid in order to guarantee the tightness of the bottom cover 88.
  • the additional layer 102 is made, or made from, a material impermeable to a liquid refrigerant such as R744, HFO-1234yf, R-134a or even water.
  • unreinforced polymer material is meant a preferably thermoplastic material having no reinforcing fiber.
  • the polymer, in other words the thermoplastic, of the additional layer 102 is the same as that of the layer 100.
  • affinity is possible between different polymers, for example chemically compatible polymers, or else polymers linked by forming a complex or by a preliminary treatment of the first and second layer, or both at the same time.
  • the bottom cover 88 may further include other layers.
  • the bottom cover 88 may include a layer corresponding to a fire barrier 104.
  • the fire barrier 104 is formed by one of the following:
  • an anti-fire film in particular plastic, in particular thermoplastic, with appropriate additives,
  • a layer comprising aramid for example a woven layer
  • the fire barrier 104 is a layer integrated into the multilayer structure of the bottom cover 88.
  • the fire barrier 104 is formed at the same time as the other layers 100,102 of the multilayer structure, for example.
  • the bottom cover 88 may include a plurality of layers.
  • the bottom cover 88 may comprise two layers 100 of composite material and two additional layers 102 of unreinforced polymer material, optionally with a fire barrier 104 arranged centrally between these four layers.
  • the bottom cover 88 may comprise a layer 100 of composite material and two additional layers 102 on either side of this layer 100, optionally with a fire barrier layer. 104.
  • the outer layer of the bottom cover 88 that is to say the layer facing the bottom of the vehicle, or the layer facing away from the battery cells 9, ie an additional layer 102. It is also possible in the context where there are two additional layers 102 that the outer layer and the inner layer, c 'that is to say the layer facing the battery cells 9, are both additional layers 102 of impermeable non-reinforced polymer material.
  • a second fire barrier 104 is provided in the form of an inner layer of the compartment 2.80, in particular a layer facing the battery cells 9 to be housed. in said compartment.
  • two fire barriers 104 can be provided on both sides, interior and exterior, of the compartment 2.80 so as to reinforce the fire protection of the compartment 2.80.
  • the fire barrier 104 extending over the entire back wall, especially on the outside thereof.
  • the second layer 11 corresponds to the first layer 100 and the first layer 8 corresponds to the additional layer 102.
  • top cover 98 has the same multilayer structure as the bottom cover 88J

Abstract

The invention relates to a compartment (80) for equipment likely to emit heat during its operation, in particular for a device (9) for storing electrical energy for a motor vehicle, said compartment comprising at least one cooling plate (20) arranged to have a cooling fluid flowing through it and arranged to cool said equipment, said compartment further comprising an upper housing (81) arranged to accommodate said electrical equipment, and a lower housing (82), in which at least one fluid connection element (83) is placed in order to supply the cooling plate with fluid, the lower and upper housings being isolated from each other in a fluidly sealed manner.

Description

DESCRIPTION DESCRIPTION
TITRE DE L'INVENTION : COMPARTIMENT POUR UN EQUIPEMENT SUSCEPTIBLE DE DEGAGER DE LATITLE OF THE INVENTION: COMPARTMENT FOR EQUIPMENT LIKELY TO RELEASE
CHALEUR HEAT
[1] La présente invention concerne un compartiment pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif de stockage d'énergie électrique pour véhicule automobile. [1] The present invention relates to a compartment for equipment capable of giving off heat during its operation, in particular for an electrical energy storage device for a motor vehicle.
[2] Les demandes de brevet US2017176108 et WO 2013056938 décrivent des échangeurs de chaleur pour refroidir des cellules de batterie. Par ailleurs la demande de brevet US 2011/0206967 A décrit un exemple de telle batterie. Dans cette demande, les cellules sont stockées dans des containers ayant des logements de réception des cellules. Une paroi des containers, destinées à être en contact avec une paroi d’un container voisin présente des renfoncements formant une partie de conduit de circulation d’un fluide caloporteur. [2] Patent applications US2017176108 and WO 2013056938 describe heat exchangers for cooling battery cells. Furthermore, patent application US 2011/0206967 A describes an example of such a battery. In this application, the cells are stored in containers having housings for receiving the cells. One wall of the containers, intended to be in contact with a wall of a neighboring container, has recesses forming part of a duct for the circulation of a heat transfer fluid.
[3] La présente invention vise notamment à améliorer l’étanchéité des compartiments pour recevoir des cellules de batterie. [3] The present invention aims in particular to improve the sealing of the compartments for receiving battery cells.
[4] Pour cela, la présente invention a pour objet un compartiment pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif de stockage d'énergie électrique pour véhicule automobile, ce compartiment comportant au moins une plaque de refroidissement agencée pour être parcourue par un fluide de refroidissement et agencée pour refroidir ledit équipement, le compartiment comprenant un couvercle de fond comprenant au moins une couche en matériau composite et une couche additionnelle en matériau polymère non-renforcé, ladite couche additionnelle étant notamment imperméable au fluide de refroidissement. [4] For this, the present invention relates to a compartment for equipment capable of releasing heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one plate. cooling arranged to be traversed by a cooling fluid and arranged to cool said equipment, the compartment comprising a bottom cover comprising at least one layer of composite material and an additional layer of unreinforced polymer material, said additional layer being in particular impermeable to coolant.
[5] Ainsi avec une couche additionnelle en matériau polymère non-renforcé en particulier imperméable à l’eau, l’étanchéité du compartiment est améliorée tout en conservant ses propriétés mécaniques notamment par rapport au poids et à la résistance mécanique. [5] Thus with an additional layer of unreinforced polymer material, in particular impermeable to water, the sealing of the compartment is improved while retaining its mechanical properties, particularly in relation to weight and mechanical strength.
[6] D’autres aspects selon l’invention sont décrits ci-dessous et peuvent être pris seul ou en combinaison. [7] Un aspect selon l’invention propose que le boitier comprend deux couches additionnelles en matériau polymère non-renforcé, lesdites couches additionnelles étant notamment imperméables au fluide de refroidissement. La couche en matériau composite peut être agencée entre les deux couches additionnelles. [6] Other aspects of the invention are described below and can be taken alone or in combination. [7] One aspect according to the invention proposes that the case comprises two additional layers of unreinforced polymer material, said additional layers being in particular impermeable to the cooling fluid. The composite material layer can be arranged between the two additional layers.
[8] Un autre aspect selon l’invention propose que le boitier comprend en outre une couche ignifuge faite d’un matériau ignifuge. On peut aussi parler d’une barrière anti-feu. [8] Another aspect according to the invention provides that the housing further comprises a flame retardant layer made of a flame retardant material. We can also talk about a fire barrier.
[9] Un autre aspect propose que le compartiment comporte au moins un canal de circulation d’un fluide de refroidissement, ce canal étant obtenu par moulage d’une matière à base de polymère, avec injection assistée d’un fluide, notamment injection assistée d’un gaz ou d’un liquide, pour former ce canal dans la matière à base de polymère. [9] Another aspect proposes that the compartment comprises at least one channel for circulating a cooling fluid, this channel being obtained by molding of a polymer-based material, with assisted injection of a fluid, in particular assisted injection. of a gas or a liquid, to form this channel in the polymer-based material.
[10] Un autre aspect propose que le compartiment, par exemple pour recevoir des cellules de batterie, qui présente également une fonction de refroidissement de ces cellules, dont la fabrication est simplifiée. [10] Another aspect proposes that the compartment, for example to receive battery cells, which also has a function of cooling these cells, the manufacture of which is simplified.
[11] Un autre aspect propose que la formation du ou des canaux de fluide de refroidissement dans la matière à base de polymère par injection assistée d’un liquide ou d’un gaz permet d’avoir un procédé de fabrication en une étape, au lieu d’un procédé à plusieurs étapes pour former le ou les canaux qui nécessiteraient une soudure. Ainsi l’invention permet d’éviter certains problèmes d’étanchéité liés à des fuites de fluide de refroidissement. Dans l’invention, comme le ou les canaux sont formés par des formes creuses directement dans la matière, on évite ces problèmes de fuite. Les opérations de fabrication sont en outre simplifiées. [11] Another aspect proposes that the formation of the coolant channel (s) in the polymer-based material by assisted injection of a liquid or a gas makes it possible to have a one-step manufacturing process, at the same time. instead of a multi-step process to form the channel (s) that would require soldering. Thus, the invention makes it possible to avoid certain sealing problems linked to leaks of cooling fluid. In the invention, since the channel or channels are formed by hollow shapes directly in the material, these leakage problems are avoided. Manufacturing operations are further simplified.
[12] Un autre aspect propose que le canal présente une paroi interne sans jointure, comme le résultat du creusement de la matière à base de polymère par le fluide injecté lors du moulage. [12] Another aspect proposes that the channel has a seamless inner wall, as a result of the hollowing out of the polymer material by the fluid injected during molding.
[13] Un autre aspect propose que le canal présente une forme cylindrique, au moins sur une partie de sa longueur, notamment avec une section transversale en rectangle ou ovale ou ronde. [14] Un autre aspect propose que la matière à base de polymère dans laquelle est formée le canal est liée à une couche en matériau composite à base de polymère. [13] Another aspect proposes that the channel has a cylindrical shape, at least over part of its length, in particular with a rectangle or oval or round cross section. [14] Another aspect proposes that the polymer-based material in which the channel is formed is bonded to a layer of polymer-based composite material.
[15] Cette liaison est notamment le résultat d’un moulage, notamment surmoulage ou co-moulage, entre la matière qui comporte le ou les canaux pour la circulation de fluide de refroidissement et cette couche en matériau composite. [15] This connection is in particular the result of a molding, in particular overmolding or co-molding, between the material which comprises the channel or channels for the circulation of cooling fluid and this layer of composite material.
[16] Selon l’un des aspects de l’invention, la couche en matériau composite comporte une ouverture et la matière qui forme le canal passe à travers cette ouverture de sorte ce canal passe aussi à travers cette ouverture de la couche. [16] According to one aspect of the invention, the composite material layer has an opening and the material that forms the channel passes through this opening so that channel also passes through this opening of the layer.
[17] Selon l’un des aspects de l’invention, la matière dans laquelle est formé le canal se présente sous la forme d’une couche qui s’étend sur une face de la couche de matériau composite. [17] According to one aspect of the invention, the material from which the channel is formed is in the form of a layer which extends over one side of the layer of composite material.
[18] Ces deux couches forment notamment un couvercle de fond. [18] These two layers in particular form a bottom cover.
[19] Selon l’un des aspects de l’invention, cette couche de matière composite et la couche sont planes sur une partie au moins de leur superficie. [19] According to one aspect of the invention, this layer of composite material and the layer are flat over at least part of their area.
[20] Selon l’un des aspects de l’invention, ces deux couches comportent un bord incliné par rapport à cette partie plane, et le canal passe dans la couche de matière sur ce bord. [20] According to one aspect of the invention, these two layers have an edge inclined relative to this flat part, and the channel passes through the layer of material on this edge.
[21] Selon l’un des aspects de l’invention, le canal dans la matière se raccorde à un organe de connexion fluidique, notamment sur ce bord incliné. [21] According to one aspect of the invention, the channel in the material connects to a fluidic connection member, in particular on this inclined edge.
[22] Selon l’un des aspects de l’invention, cet organe de connexion fluidique est moulé par la matière de la couche qui comprend le canal. [22] According to one aspect of the invention, this fluidic connection member is molded from the material of the layer which comprises the channel.
[23] Selon l’un des aspects de l’invention, la couche en matière composite comporte au moins deux canaux issus d’injection assistée, ces canaux étant nomment parallèles sur une majeure partie de leur longueur. [23] According to one aspect of the invention, the composite material layer comprises at least two channels resulting from assisted injection, these channels being called parallel over a major part of their length.
[24] Selon l’un des aspects de l’invention, le compartiment comporte une plaque de refroidissement disposée d’un côté de la couche en matériau composite qui est opposé au côté de la couche de matière moulée. [24] According to one aspect of the invention, the compartment has a cooling plate disposed on one side of the composite material layer which is opposite to the side of the molded material layer.
[25] Selon l’un des aspects de l’invention, la plaque est agencée pour être parcourue par un fluide de refroidissement circulant également dans les canaux de la couche moulée. Ces canaux sont notamment des canaux nourriciers qui respectivement alimentent et évacuent le fluide de refroidissement circulant dans la plaque. Il est par exemple prévu un seul canal nourricier d’alimentation et un seul canal nourricier d’évacuation. [25] According to one of the aspects of the invention, the plate is arranged to be traversed by a cooling fluid also circulating in the channels. of the molded layer. These channels are in particular feeder channels which respectively supply and evacuate the cooling fluid circulating in the plate. For example, a single feeder feed channel and a single feeder discharge channel are provided.
[26] Selon l’un des aspects de l’invention, la couche qui comporte les canaux nourriciers comporte une portion de connexion réalisée d’un seul tenant avec le reste de la couche et qui est agencée pour être connectée à la plaque de refroidissement. Cette portion de connexion fait saillie à travers la couche en matériau composite. [26] According to one of the aspects of the invention, the layer which comprises the feeder channels comprises a connection portion made in one piece with the rest of the layer and which is arranged to be connected to the cooling plate. . This connection portion protrudes through the layer of composite material.
[27] Selon l’un des aspects de l’invention, les canaux sont formés uniquement dans la couche de matière moulée, autrement dit les canaux ne sont pas formés par l’assemblage de deux couches distinctes par exemple. [27] According to one aspect of the invention, the channels are formed only in the layer of molded material, in other words the channels are not formed by the assembly of two separate layers for example.
[28] Selon l’un des aspects de l’invention, la couche comporte des sillons pour former les canaux et des nervures de renfort, notamment en forme de nid d’abeille, pour le renfort mécanique du compartiment. [28] According to one aspect of the invention, the layer comprises grooves to form the channels and reinforcing ribs, in particular in the shape of a honeycomb, for the mechanical reinforcement of the compartment.
[29] Ainsi la couche moulée occupe que partiellement la face extérieure de la couche composite, et non toute cette face. Cette couche moulée occupe par exemple moins de 50% de la face extérieure de la couche, voire moins de 25% de celle-ci. [29] Thus the molded layer only partially occupies the outer face of the composite layer, and not all of this face. This molded layer occupies, for example, less than 50% of the outer face of the layer, or even less than 25% thereof.
[30] L’invention concerne encore un module de stockage d’énergie électrique comportant une pluralité de cellules de batterie notamment disposées suivant une rangée, et un compartiment tel que décrit ci-dessus, les cellules étant placées dans ce compartiment en interaction thermique avec la plaque de refroidissement. [30] The invention also relates to an electrical energy storage module comprising a plurality of battery cells in particular arranged in a row, and a compartment as described above, the cells being placed in this compartment in thermal interaction with the cooling plate.
[31] L’invention concerne encore un procédé de fabrication d’un compartiment pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement tel que décrit ci-dessus, le procédé comportant l’étape de former une couche de matière à base de polymère, avec injection assistée d’un fluide pour former un canal dans cette couche. [31] The invention also relates to a method of manufacturing a compartment for equipment capable of releasing heat during its operation as described above, the method comprising the step of forming a layer of base material. of polymer, with assisted injection of a fluid to form a channel in this layer.
[32] L’invention a encore pour objet, indépendamment ou en combinaison avec ce qui précède, un compartiment pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif de stockage d'énergie électrique pour véhicule automobile, ce compartiment comportant au moins une plaque de refroidissement agencée pour être parcourue par un fluide de refroidissement et agencée pour refroidir ledit équipement, ce compartiment comportant en outre un logement supérieur agencé pour recevoir ledit équipement électrique, et un logement inférieur dans lequel est placé un moins un élément de connexion de fluide pour alimenter en fluide la plaque de refroidissement, les logements inférieur et supérieur étant isolés l’un de l’autre de manière étanche au fluide. [32] A further subject of the invention, independently or in combination with the foregoing, is a compartment for equipment capable of releasing water. heat during its operation, in particular for an electrical energy storage device for a motor vehicle, this compartment comprising at least one cooling plate arranged to be traversed by a cooling fluid and arranged to cool said equipment, this compartment further comprising an upper housing arranged to receive said electrical equipment, and a lower housing in which is placed at least one fluid connection element for supplying the cooling plate with fluid, the lower and upper housings being isolated from each other by fluid-tight manner.
[33] Selon l’un des aspects de l’invention, la ou les plaques de refroidissement séparent le logement inferieur du logement supérieur. [33] According to one aspect of the invention, the cooling plate (s) separate the lower housing from the upper housing.
[34] Selon l’un des aspects de l’invention, une pluralité de plaques de refroidissement séparent le logement inferieur du logement supérieur, et ces plaques sont disposées en rangées parallèles. [34] According to one aspect of the invention, a plurality of cooling plates separate the lower housing from the upper housing, and these plates are arranged in parallel rows.
[35] Selon l’un des aspects de l’invention, chaque plaque de refroidissement comporte une entrée de fluide et une sortie de fluide de refroidissement chacune connectée à l’un des éléments de connexion de fluide, ces entrée et sortie de fluide sont toutes tournées dans le logement inferieur. [35] According to one of the aspects of the invention, each cooling plate comprises a fluid inlet and a cooling fluid outlet each connected to one of the fluid connection elements, these fluid inlet and outlet are all tours in the lower accommodation.
[36] Ainsi en cas de fuite au niveau de ces entrée et sortie, le fluide de refroidissement s’écoule dans ce logement inferieur et non dans le logement supérieur de sorte à préserver les composants électriques, notamment lorsque ces éléments sont des cellules de batterie. [36] Thus in the event of a leak at these inlet and outlet, the cooling fluid flows into this lower housing and not into the upper housing so as to preserve the electrical components, in particular when these elements are battery cells. .
[37] Notamment des conduits sont prévus au sein des plaques de refroidissement pour la circulation de fluide de refroidissement. [37] In particular conduits are provided within the cooling plates for the circulation of cooling fluid.
[38] Selon l’un des aspects de l’invention, le couvercle de fond comprend un canal de fluide de refroidissement, et l’élément de connexion de fluide est relié à ce canal. [38] According to one aspect of the invention, the bottom cover includes a coolant channel, and the fluid connection member is connected to this channel.
[39] Selon l’un des aspects de l’invention, le couvercle de fond présente une face principale sensiblement plane. [39] According to one aspect of the invention, the bottom cover has a substantially planar main face.
[40] Selon l’un des aspects de l’invention, ce couvercle de fond définit avec les plaques de refroidissement le logement inferieur. [41] Selon l’un des aspects de l’invention, les logements inferieur et supérieur couvrent sensiblement la même superficie. Ces logements présentent ainsi un agencement empilé. [40] According to one of the aspects of the invention, this bottom cover defines with the cooling plates the lower housing. [41] According to one aspect of the invention, the lower and upper housings cover substantially the same area. These housings thus have a stacked arrangement.
[42] Selon l’un des aspects de l’invention, le couvercle de fond comporte au moins une couche en matériau composite à base de polymère, notamment de matière plastique et thermoplastique. [42] According to one aspect of the invention, the bottom cover comprises at least one layer of composite material based on polymer, in particular plastic and thermoplastic.
[43] Selon l’un des aspects de l’invention, le logement inférieur présente, en espace libre, une hauteur inférieure à 25%, notamment inférieure à 15%, de la hauteur du logement supérieur. [43] According to one aspect of the invention, the lower housing has, in free space, a height of less than 25%, in particular less than 15%, of the height of the upper housing.
[44] Selon l’un des aspects de l’invention, un joint d’étanchéité est disposé sur un pourtour de jonction entre le logement inférieur et le logement supérieur. [44] According to one aspect of the invention, a seal is disposed on a junction periphery between the lower housing and the upper housing.
[45] Selon l’un des aspects de l’invention, le logement supérieur comporte au moins un cadre, notamment en aluminium, qui définit un pourtour du logement supérieur, et le joint est en contact avec ce cadre. [45] According to one aspect of the invention, the upper housing has at least one frame, including aluminum, which defines a perimeter of the upper housing, and the seal is in contact with this frame.
[46] Selon l’un des aspects de l’invention, ce cadre comporte des barreaux externes formant un pourtour et des cloisons, notamment parallèles entre elles, pour former des réceptacles chacun pour recevoir une cellule de batterie. Ces cloisons forment par exemple deux rangées identiques de plusieurs réceptacles. [46] According to one aspect of the invention, this frame comprises external bars forming a perimeter and partitions, in particular parallel to each other, to form receptacles each to receive a battery cell. These partitions form for example two identical rows of several receptacles.
[47] Selon l’un des aspects de l’invention, les plaques de refroidissement sont assemblées sur la cadre par exemple par vissage ou collage. [47] According to one aspect of the invention, the cooling plates are assembled on the frame, for example by screwing or gluing.
[48] Selon l’un des aspects de l’invention, un ou plusieurs joints d’étanchéité sont prévus entre ces barreaux et cloisons de ce cadre, d’une part, et le logement inférieur, d’autre part. [48] According to one aspect of the invention, one or more seals are provided between these bars and partitions of this frame, on the one hand, and the lower housing, on the other hand.
[49] Selon l’un des aspects de l’invention, le ou les joints sont disposés de manière étanche entre une zone du cadre et une zone d’une plaque de refroidissement, et/ou entre une zone du cadre et une zone du couvercle de fond. [49] According to one of the aspects of the invention, the seal (s) are disposed in a sealed manner between a zone of the frame and a zone of a cooling plate, and / or between a zone of the frame and a zone of the bottom cover.
[50] Selon l’un des aspects de l’invention, le joint d’étanchéité est réalisé en matériau électriquement conducteur de manière à participer à une fonction de protection électromagnétique (encore appelée CEM ou Compatibilité Electromagnétique) du logement supérieur recevant le composant électrique. [51] Selon l’un des aspects de l’invention, le couvercle supérieur est agencé pour s’appliquer contre le cadre pour fermer le compartiment, notamment avec interposition d’un joint d’étanchéité, notamment en matériau électriquement conducteur. [50] According to one of the aspects of the invention, the seal is made of an electrically conductive material so as to participate in an electromagnetic protection function (also called EMC or Electromagnetic Compatibility) of the upper housing receiving the electrical component. . [51] According to one of the aspects of the invention, the upper cover is arranged to be applied against the frame to close the compartment, in particular with the interposition of a seal, in particular of electrically conductive material.
[52] L’invention permet d’avoir une hauteur totale du compartiment qui est relativement faible, ce qui est avantageux compte tenu des contraintes d’encombrement. Le compartiment peut également être fabriqué de manière simplifiée. [52] The invention makes it possible to have a total height of the compartment which is relatively low, which is advantageous given the size constraints. The compartment can also be made in a simplified manner.
[53] Selon l’un des aspects de l’invention, le couvercle supérieur comporte un matériau composite à base de matière plastique. [53] According to one aspect of the invention, the top cover comprises a composite material based on plastic.
[54] L’invention concerne encore un dispositif de stockage d’énergie électrique comportant une pluralité de cellules de batterie, notamment disposées suivant une rangée, et un compartiment selon l’une des revendications précédentes, les cellules étant placées dans ce compartiment en interaction thermique avec la plaque de refroidissement. [54] The invention also relates to an electrical energy storage device comprising a plurality of battery cells, in particular arranged in a row, and a compartment according to one of the preceding claims, the cells being placed in this interacting compartment. thermal with the cooling plate.
[55] D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement à la lecture de la description détaillée donnée ci-après, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels : [55] Other characteristics, details and advantages of the invention will emerge more clearly on reading the detailed description given below, and several embodiments given by way of indication and not by way of limitation with reference to the appended schematic drawings d. on the other hand, on which:
[56] [Fig.1 ] est une vue schématique d’un compartiment selon un exemple de l’invention, de côté, [56] [Fig.1] is a schematic view of a compartment according to an example of the invention, from the side,
[57] [Fig.2] représente le compartiment de la [Fig.1 ], en coupe, [57] [Fig.2] shows the compartment of [Fig.1], in section,
[58] [Fig.3] est une vue schématique d’un compartiment selon un autre exemple de l’invention, [58] [Fig.3] is a schematic view of a compartment according to another example of the invention,
[59] [Fig.4] est une vue de coupe de la figure [Fig.3], [59] [Fig.4] is a sectional view of the figure [Fig.3],
[60] [Fig.5] est une autre vue schématique de la figure [Fig.4] [60] [Fig.5] is another schematic view of figure [Fig.4]
[61 ] [Fig.6] est une vue de coupe du compartiment. [61] [Fig.6] is a sectional view of the compartment.
[62] On a représenté sur les figures 1 et 2 un module 1 de stockage d’énergie électrique comportant une pluralité de cellules de batterie 9, visibles sur la figure 2, et un compartiment 2. [63] Ce compartiment 2 comporte deux canaux 3 de circulation d’un fluide de refroidissement, visibles sur la figure 1 , qui sont parallèles. Cette figure 1 montre la face inférieure et extérieure du compartiment 2. Ce compartiment 2 définit, avec un couvercle supérieur non représenté, un boitier 5 qui contient les cellules de batterie 9. Le fond de ce boitier 5 est sur ce compartiment 2. [62] There is shown in Figures 1 and 2 an electrical energy storage module 1 comprising a plurality of battery cells 9, visible in Figure 2, and a compartment 2. [63] This compartment 2 has two channels 3 for circulating a cooling fluid, visible in Figure 1, which are parallel. This figure 1 shows the lower and outer face of the compartment 2. This compartment 2 defines, with an upper cover not shown, a box 5 which contains the battery cells 9. The bottom of this box 5 is on this compartment 2.
[64] Chaque canal 3 est obtenu par moulage d’une matière à base de polymère pouvant éventuellement comprendre des fibres de renfort, avec injection assistée d’un fluide, notamment injection assistée d’un gaz ou d’un liquide, pour former ce canal 3 dans la matière à base de polymère. Ainsi la matière à base de polymère forme une première couche 8 en matériau polymère. [64] Each channel 3 is obtained by molding a polymer-based material which may optionally include reinforcing fibers, with assisted injection of a fluid, in particular assisted injection of a gas or a liquid, to form this channel 3 in the polymer material. Thus the polymer-based material forms a first layer 8 of polymer material.
[65] Chaque canal 3 présente une paroi interne 10 sans jointure, comme le résultat du creusement de la matière à base de polymère par le fluide injecté lors du moulage. [65] Each channel 3 has an internal wall 10 without joint, as the result of the hollowing out of the polymer-based material by the fluid injected during the molding.
[66] Chaque canal 3 présente une forme cylindrique, au moins sur une partie de sa longueur, notamment avec une section transversale en rectangle ou ovale ou ronde. [66] Each channel 3 has a cylindrical shape, at least over part of its length, in particular with a rectangle or oval or round cross section.
[67] La matière à base de polymère dans laquelle est formée les canaux 3 est liée à une deuxième couche 11 en matériau composite. [67] The polymer-based material in which the channels 3 are formed is bonded to a second layer 11 of composite material.
[68] Par matériau composite il est entendu un matériau comprenant au moins deux matières différentes telles que du plastique et du métal. Selon l’invention, les matériaux composites privilégiés correspondent à des matériaux robustes et légers à la fois. Des matériaux composites tels qu’un mélange d’un thermoplastique avec des fibres de renforts se prêtent tout particulièrement à une telle utilisation. A titre illustratif, le matériau composite peut correspondre à du polypropylène avec des fibres de verre et/ou de carbone. En effet, le polypropylène correspond à une matière légère et les fibres de verre et/ou de carbone renforcent la structure du boitier. Le polyamide-6 avec des fibres de verre est également possible. On peut aussi dire que le matériau composite correspond à des fibres de renfort pré-imprégnées d’une résine thermoplastique. [68] By composite material is meant a material comprising at least two different materials such as plastic and metal. According to the invention, the preferred composite materials correspond to materials that are both robust and light at the same time. Composite materials such as a blend of a thermoplastic with reinforcing fibers are particularly suitable for such use. By way of illustration, the composite material may correspond to polypropylene with glass and / or carbon fibers. In fact, polypropylene corresponds to a light material and the glass and / or carbon fibers reinforce the structure of the case. Polyamide-6 with glass fibers is also possible. We can also say that the composite material corresponds to reinforcing fibers pre-impregnated with a thermoplastic resin.
[69] Cette liaison est le résultat d’un surmoulage ou co-moulage entre la première 8 et deuxième 11 couche qui comporte les canaux 3 pour la circulation de fluide de refroidissement. [70] La deuxième couche 11 en matériau composite comporte des ouvertures 13 et la première couche 8 qui forme les canaux 3 passe à travers ces ouvertures[69] This connection is the result of an overmolding or co-molding between the first 8 and second 11 layer which comprises the channels 3 for the circulation of cooling fluid. [70] The second layer 11 of composite material has openings 13 and the first layer 8 which forms the channels 3 passes through these openings.
13 de sorte chaque canal 3 passe aussi à travers cette ouverture 13 associée de la deuxième couche 11. 13 so that each channel 3 also passes through this associated opening 13 of the second layer 11.
[71] La première couche 8 dans laquelle et formé le canal se présente sous la forme d’une couche qui s’étend sur une face de la deuxième couche 11 en matériau composite. [71] The first layer 8 in which and formed the channel is in the form of a layer which extends over one side of the second layer 11 of composite material.
[72] La deuxième couche 11 est plane sur une partie au moins de sa superficie dans une région plane 17. [72] The second layer 11 is flat over at least part of its surface in a flat region 17.
[73] La première couche 8 et la deuxième couche 11 comporte un bord incliné 15 par rapport à cette région plane 17, et le canal 3 passe dans la première couche 8 sur ce bord 15. [73] The first layer 8 and the second layer 11 have an inclined edge 15 with respect to this flat region 17, and the channel 3 passes into the first layer 8 on this edge 15.
[74] Chaque canal 3 dans la matière se raccorde à un organe de connexion fluidique 27, sur ce bord incliné 15. [74] Each channel 3 in the material is connected to a fluidic connection member 27, on this inclined edge 15.
[75] Chaque organe de connexion fluidique 27 est surmoulé par la matière de la première couche 8. [75] Each fluidic connection member 27 is overmolded by the material of the first layer 8.
[76] Le compartiment 2 comporte une plaque de refroidissement 20 disposée d’un côté 21 de la couche en matériau composite qui est opposé au côté 22 de la première couche 8. [76] Compartment 2 has a cooling plate 20 disposed on one side 21 of the layer of composite material which is opposite to side 22 of the first layer 8.
[77] La plaque 20 est agencée pour être parcourue par un fluide de refroidissement circulant également dans les canaux 3 de la couche. Ces canaux 3 sont des canaux nourriciers qui respectivement alimentent et évacuent le fluide de refroidissement circulant dans la plaque 20. Il est par exemple prévu un seul canal nourricier d’alimentation et un seul canal nourricier d’évacuation. [77] The plate 20 is arranged to be traversed by a cooling fluid also circulating in the channels 3 of the layer. These channels 3 are feeder channels which respectively feed and evacuate the cooling fluid circulating in the plate 20. For example, a single feeder feed channel and a single feeder outlet channel are provided.
[78] La plaque 20 est formée de deux sous-plaques 24 qui, une fois assemblées, forment un circuit de circulation 39 de fluide de refroidissement. [78] The plate 20 is formed of two sub-plates 24 which, once assembled, form a circulation circuit 39 of cooling fluid.
[79] La première couche 8 comporte des portions de connexion 29 réalisées d’un seul tenant avec le reste de la couche et qui sont agencées pour être connectées à la plaque de refroidissement 20. Cette portion de connexion 29 fait saillie à travers la couche en matériau composite et est parcoure par le canal 3 associé pour amener ce canal 3 jusqu’à la plaque 20. Cette plaque 20 est en regard de la deuxième couche 11. [79] The first layer 8 comprises connection portions 29 made in one piece with the rest of the layer and which are arranged to be connected to the cooling plate 20. This connection portion 29 protrudes through the layer. made of composite material and is traversed by the associated channel 3 to bring this channel 3 to the plate 20. This plate 20 is opposite the second layer 11.
[80] La première couche 8 comporte des sillons 33 pour former les canaux et des nervures de renfort 34, notamment en forme de nid d’abeille, pour le renfort mécanique du compartiment 2. [80] The first layer 8 comprises grooves 33 to form the channels and reinforcing ribs 34, in particular in the shape of a honeycomb, for the mechanical reinforcement of the compartment 2.
[81 ] Le fluide pour l’injection assistée peut être de l’eau. [81] The fluid for assisted injection may be water.
[82] Ainsi la première couche 8 occupe que partiellement la face extérieure de la deuxième couche 11 en matériau composite, et non toute cette face. Cette couche occupe par exemple moins de 50% de la face extérieure de la deuxième couche 11 , voire moins de 25% de celle-ci. [82] Thus the first layer 8 only partially occupies the outer face of the second layer 11 of composite material, and not all of this face. This layer occupies for example less than 50% of the outer face of the second layer 11, or even less than 25% thereof.
[83] Les cellules 9 sont placées dans ce compartiment 2 en interaction thermique avec la plaque de refroidissement 20. [83] The cells 9 are placed in this compartment 2 in thermal interaction with the cooling plate 20.
[84] Chaque canal 3 présente une longueur d’au moins 5 cm, notamment d’au moins 10 cm. [84] Each channel 3 has a length of at least 5 cm, in particular at least 10 cm.
[85] Le matériau composite de la deuxième couche 11 comprend des fibres de verre, éventuellement en variante des fibres de carbone ou d’une autre nature, pré-imprégnées d’une résine thermoplastique. [85] The composite material of the second layer 11 comprises glass fibers, optionally as a variant of carbon fibers or of another nature, pre-impregnated with a thermoplastic resin.
[86] Le compartiment 2 présente un bord relevé 36 sur son pourtour. [86] Compartment 2 has a raised edge 36 around its periphery.
[87] La structure en nid d’abeille 34 est vers l’extérieur du boîtier 5. [87] The honeycomb structure 34 is outwardly of the housing 5.
[88] Le liquide de refroidissement mis en oeuvre dans ce cas peut notamment être un réfrigérant liquide à base de dioxyde de carbone, comme du R744 par exemple, du 2, 3, 3, 3-tétrafluoropropène (ou HFO-1234yf) ou du 1 , 1 , 1 , 2- tétrafluoroéthane (ou R-134a). Le liquide de refroidissement peut également être un nanofluide. Le liquide de refroidissement peut encore être de l’eau, incluant éventuellement des additifs. [88] The coolant used in this case can in particular be a liquid coolant based on carbon dioxide, such as R744 for example, 2, 3, 3, 3-tetrafluoropropene (or HFO-1234yf) or 1, 1, 1, 2-tetrafluoroethane (or R-134a). The coolant can also be a nanofluid. The coolant can still be water, possibly including additives.
[89] Les cellules de batterie comprennent par exemple une pluralité de batteries au lithium-ion (Li-ion) pour une utilisation dans un véhicule hybride. Dans un autre mode de réalisation, la pluralité de cellules de batterie sont des batteries Li- ion pour une utilisation dans un véhicule électrique à batterie. [90] La plaque de refroidissement 20 forme un échangeur de chaleur compris dans un circuit de refroidissement, non représenté, du type comprenant un compresseur et d’autres échangeurs thermiques. [89] The battery cells include, for example, a plurality of lithium-ion (Li-ion) batteries for use in a hybrid vehicle. In another embodiment, the plurality of battery cells are Li-ion batteries for use in a battery electric vehicle. [90] The cooling plate 20 forms a heat exchanger included in a cooling circuit, not shown, of the type comprising a compressor and other heat exchangers.
[91] Les plaques sont par exemple un assemblage de deux parois en aluminium délimitant des conduits de circulation de fluide de refroidissement, prenant la forme de chemin en méandres par exemple. [91] The plates are for example an assembly of two aluminum walls delimiting cooling fluid circulation ducts, taking the form of a meandering path, for example.
[92] Le compartiment 2 et les cellules de batterie 9 forment, avec d’autres composants, un dispositif 40 de stockage d'énergie électrique pour véhicule automobile. [92] Compartment 2 and battery cells 9 together with other components form an electrical energy storage device 40 for a motor vehicle.
[93] La première couche 8 et la deuxième couche 11 forment un couvercle de fond 88. [93] The first layer 8 and the second layer 11 form a bottom cover 88.
[94] On a représenté sur les figures 3 à 5 un compartiment 80 pour cellules de batterie 9 de véhicule automobile selon un autre mode de réalisation. Ce compartiment 80 comportant des plaques de refroidissement 20 agencée pour être parcourue par un fluide de refroidissement et agencée pour refroidir les cellules 9. [94] There is shown in Figures 3 to 5 a compartment 80 for battery cells 9 of a motor vehicle according to another embodiment. This compartment 80 comprising cooling plates 20 arranged to be traversed by a cooling fluid and arranged to cool the cells 9.
[95] Ce compartiment 80 comporte en outre un logement supérieur 81 agencé pour recevoir les cellules 9, et un logement inférieur 82 dans lequel sont placés des éléments de connexion de fluide 83 pour alimenter en fluide des plaques de refroidissement 20. [95] This compartment 80 further comprises an upper housing 81 arranged to receive the cells 9, and a lower housing 82 in which are placed fluid connection elements 83 for supplying the cooling plates 20 with fluid.
[96] Les logements inférieur 82 et supérieur 81 sont isolés l’un de l’autre de manière étanche au fluide. [96] The lower 82 and upper 81 housings are insulated from each other in a fluid-tight manner.
[97] Les plaques de refroidissement 20 séparent le logement inferieur 82 du logement supérieur 81 , comme on peut mieux le voir sur les figures 4et 5. [97] The cooling plates 20 separate the lower housing 82 from the upper housing 81, as can best be seen in Figures 4 and 5.
[98] Une pluralité de plaques de refroidissement 20 séparent le logement inférieur 82 du logement supérieur 81 , et ces plaques 20 sont disposées en rangées parallèles. [98] A plurality of cooling plates 20 separate the lower housing 82 from the upper housing 81, and these plates 20 are arranged in parallel rows.
[99] Chaque plaque de refroidissement 20 comporte une entrée de fluide 84 et une sortie 85 de fluide de refroidissement chacune connectée à l’un des éléments de connexion de fluide 83, ces entrée et sortie de fluide 84 et 85 sont toutes tournées dans le logement inferieur 82. [100] Ainsi en cas de fuite au niveau de ces entrée et sortie 84 et 85, le fluide de refroidissement s’écoule dans ce logement inferieur 82 et non dans le logement supérieur 81 de sorte à préserver les cellules de batterie. [99] Each cooling plate 20 has a fluid inlet 84 and a coolant outlet 85 each connected to one of the fluid connection elements 83, these fluid inlet and outlet 84 and 85 are all turned in the lower housing 82. [100] Thus in the event of a leak at these inlet and outlet 84 and 85, the cooling fluid flows into this lower housing 82 and not into the upper housing 81 so as to preserve the battery cells.
[101] Des conduits sont prévus au sein des plaques de refroidissement pour la circulation de fluide de refroidissement 20. [101] Ducts are provided within the cooling plates for the circulation of cooling fluid 20.
[102] Le compartiment 80 comporte un couvercle de fond 88 comprenant des canaux 3 de fluide de refroidissement comme ceux décrit à l’exemple précédent. [102] The compartment 80 has a bottom cover 88 comprising coolant channels 3 like those described in the previous example.
[103] Les éléments 83 de connexion de fluide sont relié à ces canaux 3 étant par exemple formés par un prolongement de matière qui forme également les canaux 3. Ces canaux 3 sont réalisés par injection assistée de fluide dans la première couche 8 de matière en polymère, comme décrit dans l’exemple précédent. [103] The fluid connection elements 83 are connected to these channels 3 being for example formed by an extension of material which also forms the channels 3. These channels 3 are produced by assisted injection of fluid into the first layer 8 of material in polymer, as described in the previous example.
[104] Le couvercle de fond 88 présente une face principale sensiblement plane 89. [104] The bottom cover 88 has a substantially planar main face 89.
[105] Ce couvercle de fond 88 définit avec les plaques de refroidissement 20 le logement inferieur 82. [105] This bottom cover 88 defines with the cooling plates 20 the lower housing 82.
[106] Les logements inferieur 82 et supérieur 81 couvrent sensiblement la même superficie. Ces logements 81 et 82 présentent ainsi un agencement empilé selon une verticale lorsque l’ensemble est monté sur le véhicule. [106] The lower 82 and upper 81 dwellings cover substantially the same area. These housings 81 and 82 thus have an arrangement stacked vertically when the assembly is mounted on the vehicle.
[107] Le couvercle de fond 88 comporte une couche en matériau composite à base de polymère et plus particulièrement plastique et thermoplastique. [107] The bottom cover 88 comprises a layer of composite material based on polymer and more particularly plastic and thermoplastic.
[108] Le logement inférieur 82 présente, en espace libre, une hauteur inférieure h à 25%, notamment inférieure à 15%, de la hauteur H du logement supérieur. [108] The lower housing 82 has, in free space, a height h less than 25%, in particular less than 15%, of the height H of the upper housing.
[109] Des joints d’étanchéité 90 sont disposés sur un pourtour de jonction 91 entre le logement inférieur 82 et le logement supérieur 81. [109] Seals 90 are arranged on a junction periphery 91 between the lower housing 82 and the upper housing 81.
[110] Le logement supérieur 81 comporte un cadre 93 en aluminium, qui définit un pourtour 95 du logement supérieur, et le joint 90 est en contact avec ce cadre 93. [110] The upper housing 81 comprises an aluminum frame 93, which defines a periphery 95 of the upper housing, and the seal 90 is in contact with this frame 93.
[111] Ce cadre 93 comporte des barreaux externes 94 formant un pourtour et des cloisons 96, qui forme un quadrillage, pour former des réceptacles 97 chacun pour recevoir une cellule de batterie. Ces cloisons 96 forment par exemple deux rangées identiques de plusieurs réceptacles 97. [112] Les barreaux 94 sont notamment en structure alvéolée. Ces barreaux ont par exemple en acier ou aluminium. [111] This frame 93 comprises external bars 94 forming a perimeter and partitions 96, which forms a grid, to form receptacles 97 each to receive a battery cell. These partitions 96 form for example two identical rows of several receptacles 97. [112] The bars 94 are in particular in a honeycomb structure. These bars are made of steel or aluminum, for example.
[113] Les plaques de refroidissement 20 sont assemblées sur la cadre 93 par exemple par vissage ou collage. [113] The cooling plates 20 are assembled on the frame 93, for example by screwing or gluing.
[114] Les joints d’étanchéité 90 sont prévus entre ces barreaux 94 et cloisons 96 de ce cadre, d’une part, et le logement inférieur 82, d’autre part. [114] The seals 90 are provided between these bars 94 and partitions 96 of this frame, on the one hand, and the lower housing 82, on the other hand.
[115] Les joints 90, par exemple à base de silicone, sont disposés de manière étanche entre une zone du cadre 93 et une zone d’une plaque de refroidissement 20, et/ou entre une zone du cadre 93 et une zone du couvercle de fond 88. [115] The gaskets 90, for example based on silicone, are disposed in a sealed manner between a zone of the frame 93 and a zone of a cooling plate 20, and / or between a zone of the frame 93 and a zone of the cover background 88.
[116] Chaque joint d’étanchéité 90 est réalisé en matériau électriquement conducteur de manière à participer à une fonction de protection électromagnétique du logement supérieur 81 recevant les cellules. [116] Each seal 90 is made of an electrically conductive material so as to participate in an electromagnetic protection function of the upper housing 81 receiving the cells.
[117] Un couvercle supérieur 98 est agencé pour s’appliquer contre le cadre 93 pour fermer le compartiment, avec interposition de joints d’étanchéité 90. [117] An upper cover 98 is arranged to rest against the frame 93 to close the compartment, with the interposition of seals 90.
[118] Le couvercle supérieur 98 comporte un matériau composite à base de matière polymère, et présente notamment une forme sensiblement plate. [118] The top cover 98 comprises a composite material based on a polymer material, and in particular has a substantially flat shape.
[119] Les canaux 3 nourriciers sont notamment tournés vers le logement inferieur 82. [119] The feeder channels 3 are in particular turned towards the lower housing 82.
[120] Quel que soit le mode de réalisation décrit précédemment, l’invention porte sur l’étanchéité du compartiment 2,80 et notamment l’étanchéité du couvercle de fond 88. Comme illustré sur la figure 6, le couvercle de fond 88 correspond à une structure en multicouches comprenant a minima une couche 100 en matériau composite et une couche additionnelle 102 en matériau polymère non-renforcée. La couche additionnelle 102 en matériau polymère non-renforcé correspond par exemple à du plastique ou autre thermoplastique sans aucune fibre de renfort. La couche additionnelle 102 est de préférence imperméable au fluide de refroidissement afin de garantir l’étanchéité du couvercle de fond 88. Autrement dit, la couche additionnelle 102 est réalisée, ou fabriquée à partir, d’un matériau imperméable à un réfrigérant liquide tel que du R744, HFO-1234yf, R-134a ou encore de l’eau. [121] Par matériau polymère non-renforcé il est entendu un matériau de préférence thermoplastique ne présentant aucune fibre de renfort. Afin de faciliter l’affinité entre les couches, il est préférable que le polymère, autrement dit le thermoplastique, de la couche additionnelle 102 soit le même que celui de la couche 100. Bien évidemment, l'affinité est possible entre des polymères différents, par exemple des polymères compatibles chimiquement, ou bien des polymères liés en formant un complexe ou par un traitement préalable de la première et deuxième couche, ou les deux à la fois. [120] Whatever the embodiment described above, the invention relates to the sealing of the compartment 2.80 and in particular the sealing of the bottom cover 88. As illustrated in Figure 6, the bottom cover 88 corresponds to a multilayer structure comprising at least one layer 100 of composite material and an additional layer 102 of unreinforced polymer material. The additional layer 102 of unreinforced polymer material corresponds for example to plastic or other thermoplastic without any reinforcing fiber. The additional layer 102 is preferably impermeable to the cooling fluid in order to guarantee the tightness of the bottom cover 88. In other words, the additional layer 102 is made, or made from, a material impermeable to a liquid refrigerant such as R744, HFO-1234yf, R-134a or even water. [121] By unreinforced polymer material is meant a preferably thermoplastic material having no reinforcing fiber. In order to facilitate the affinity between the layers, it is preferable that the polymer, in other words the thermoplastic, of the additional layer 102 is the same as that of the layer 100. Obviously, affinity is possible between different polymers, for example chemically compatible polymers, or else polymers linked by forming a complex or by a preliminary treatment of the first and second layer, or both at the same time.
[122] Le couvercle de fond 88 peut comprendre en outre d’autres couches. [122] The bottom cover 88 may further include other layers.
Comme illustré sur la figure 6, le couvercle de fond 88 peut comprendre une couche correspondant à une barrière anti-feu 104. As illustrated in Figure 6, the bottom cover 88 may include a layer corresponding to a fire barrier 104.
[123] Selon l’un des aspects de l’invention, la barrière anti-feu 104 est formée par l’un des éléments suivants : [123] According to one aspect of the invention, the fire barrier 104 is formed by one of the following:
- un film anti-feu, notamment en plastique, notamment thermoplastique, avec des adjuvants appropriés, - an anti-fire film, in particular plastic, in particular thermoplastic, with appropriate additives,
- une couche comportant de l’aramide, par exemple couche en tissé, - a layer comprising aramid, for example a woven layer,
- une couche ou film en métal. - a metal layer or film.
[124] Selon l’un des aspects de l’invention, la barrière anti-feu 104 est une couche intégrée dans la structure multicouche du couvercle de fond 88. [124] According to one aspect of the invention, the fire barrier 104 is a layer integrated into the multilayer structure of the bottom cover 88.
[125] La barrière anti- feu 104 est formée en même temps que les autres couches 100,102 de la structure multicouche, par exemple. [125] The fire barrier 104 is formed at the same time as the other layers 100,102 of the multilayer structure, for example.
[126] Comme illustré sur la figure 6, le couvercle de fond 88 peut comprendre une pluralité de couches. Par exemple, le couvercle de fond 88 peut comprendre deux couches 100 en matériau composite et deux couches additionnelles 102 en matériau polymère non-renforcée, avec éventuellement une barrière anti-feu 104 agencée de manière centrale entre ces quatre couches. [126] As illustrated in Figure 6, the bottom cover 88 may include a plurality of layers. For example, the bottom cover 88 may comprise two layers 100 of composite material and two additional layers 102 of unreinforced polymer material, optionally with a fire barrier 104 arranged centrally between these four layers.
[127] Selon d’autres modes de réalisation non illustrés, le couvercle de fond 88 peut comprendre une couche 100 en matériau composite et deux couches additionnelles 102 de part et d’autre de cette couche 100, avec éventuellement une couche barrière anti-feu 104. [128] Toutefois selon l’invention, afin d’assurer une meilleure étanchéité et empêcher toute fuite de fluide de refroidissement, il est préférable que la couche extérieure du couvercle de fond 88, c'est-à-dire la couche tournée vers le fond du véhicule, ou encore la couche tournée à l’opposé des cellules de batteries 9, soit une couche additionnelle 102. Il est aussi possible dans le cadre où il y ait deux couches additionnelles 102 que la couche extérieure et la couche intérieure, c'est-à-dire la couche tournée vers les cellules de batterie 9, soient toutes deux des couches additionnelles 102 en matériau polymère non-renforcée imperméables. [127] According to other embodiments not shown, the bottom cover 88 may comprise a layer 100 of composite material and two additional layers 102 on either side of this layer 100, optionally with a fire barrier layer. 104. [128] However, according to the invention, in order to ensure better sealing and prevent any leakage of cooling fluid, it is preferable that the outer layer of the bottom cover 88, that is to say the layer facing the bottom of the vehicle, or the layer facing away from the battery cells 9, ie an additional layer 102. It is also possible in the context where there are two additional layers 102 that the outer layer and the inner layer, c 'that is to say the layer facing the battery cells 9, are both additional layers 102 of impermeable non-reinforced polymer material.
[129] Selon l’un des aspects de l’invention non illustré, une deuxième barrière anti feu 104 est prévue sous la forme d’une couche intérieure du compartiment 2,80, notamment une couche tournée vers les cellules de batterie 9 à loger dans ledit compartiment. Ainsi deux barrières anti-feu 104 peuvent être prévues sur les deux faces, intérieur et extérieur, du compartiment 2,80 de sorte à renforcer la protection au feu du compartiment 2,80. [129] According to one of the aspects of the invention not illustrated, a second fire barrier 104 is provided in the form of an inner layer of the compartment 2.80, in particular a layer facing the battery cells 9 to be housed. in said compartment. Thus two fire barriers 104 can be provided on both sides, interior and exterior, of the compartment 2.80 so as to reinforce the fire protection of the compartment 2.80.
[130] La barrière anti-feu 104 s’étendant sur toute la paroi de fond, notamment sur l’extérieur de celle-ci. [130] The fire barrier 104 extending over the entire back wall, especially on the outside thereof.
[131] Selon le premier mode de réalisation, la deuxième couche 11 correspond à la première couche 100 et la première couche 8 correspond à la couche additionnelle 102. [131] According to the first embodiment, the second layer 11 corresponds to the first layer 100 and the first layer 8 corresponds to the additional layer 102.
[132] Un aspect selon l’invention propose que le couvercle supérieur 98 présente la même structure multicouches que le couvercle de fond 88J [132] One aspect according to the invention proposes that the top cover 98 has the same multilayer structure as the bottom cover 88J

Claims

REVENDICATIONS
[Revendication 1] Compartiment (2, 80) pour un équipement susceptible de dégager de la chaleur lors de son fonctionnement, notamment pour un dispositif (1) de stockage d'énergie électrique pour véhicule automobile, ce compartiment comportant au moins une plaque de refroidissement (20) agencée pour être parcourue par un fluide de refroidissement et agencée pour refroidir ledit équipement, le compartiment (2, 80) comprenant un couvercle de fond (88) comprenant au moins une couche (100) en matériau composite et une couche additionnelle (102) en matériau polymère non- renforcé. [Claim 1] Compartment (2, 80) for equipment capable of giving off heat during its operation, in particular for a device (1) for storing electrical energy for a motor vehicle, this compartment comprising at least one cooling plate (20) arranged to be traversed by a cooling fluid and arranged to cool said equipment, the compartment (2, 80) comprising a bottom cover (88) comprising at least one layer (100) of composite material and one additional layer ( 102) in unreinforced polymer material.
[Revendication 2] Compartiment (2, 80) selon la revendication 1 , dans lequel le couvercle de fond (88) comprend deux couches additionnelles (102) en matériau polymère non renforcé, la couche (100) en matériau composite étant agencée entre les deux couches additionnelles (102). [Claim 2] A compartment (2, 80) according to claim 1, wherein the bottom cover (88) comprises two additional layers (102) of unreinforced polymer material, the layer (100) of composite material being arranged between the two. additional layers (102).
[Revendication 3] Compartiment (80) selon la revendication 1 ou 2, dans lequel le compartiment (80) comporte en outre un logement supérieur (81) agencé pour recevoir ledit équipement électrique, et un logement inférieur (82) dans lequel est placé un moins un élément de connexion de fluide (83) pour alimenter en fluide la plaque de refroidissement (20), les logements inférieur (82) et supérieur (81) étant isolés l’un de l’autre de manière étanche au fluide. [Claim 3] A compartment (80) according to claim 1 or 2, wherein the compartment (80) further comprises an upper housing (81) arranged to receive said electrical equipment, and a lower housing (82) in which is placed a at least one fluid connection member (83) for supplying fluid to the cooling plate (20), the lower (82) and upper (81) housings being isolated from each other in a fluidtight manner.
[Revendication 4] Compartiment (80) selon la revendication 3, dans lequel la ou les plaques de refroidissement (20) séparent le logement inferieur (82) du logement supérieur (81). [Claim 4] A compartment (80) according to claim 3, wherein the one or more cooling plates (20) separate the lower housing (82) from the upper housing (81).
[Revendication 5] Compartiment (80) selon l’une des revendications 3 ou 4, dans lequel le couvercle de fond (88) comprend un canal de fluide de refroidissement (3), et l’élément de connexion de fluide (83) est relié à ce canal. [Claim 5] A compartment (80) according to one of claims 3 or 4, wherein the bottom cover (88) comprises a coolant channel (3), and the fluid connection member (83) is connected to this channel.
[Revendication 6] Compartiment (80) selon l’une des revendications 3 à 5, dans lequel un joint d’étanchéité (90) est disposé sur un pourtour de jonction entre le logement inférieur (82) et le logement supérieur (81). [Claim 6] A compartment (80) according to one of claims 3 to 5, wherein a seal (90) is disposed on a junction periphery between the lower housing (82) and the upper housing (81).
[Revendication 7] Compartiment (80) selon la revendication 6, dans lequel le logement supérieur (81) comporte au moins un cadre (93), notamment en aluminium, qui définit un pourtour du logement supérieur, et le joint (90) est en contact avec ce cadre. [Claim 7] A compartment (80) according to claim 6, in which the upper housing (81) comprises at least one frame (93), in particular in aluminum, which defines a perimeter of the upper housing, and the gasket (90) is in contact with this frame.
[Revendication 8] Compartiment (80) selon la revendication 7, dans lequel le ou les joints (90) sont disposés de manière étanche entre une zone du cadre (93) et une zone d’une plaque de refroidissement (20), et/ou entre une zone du cadre et une zone du couvercle de fond. [Claim 8] A compartment (80) according to claim 7, wherein the seal (s) (90) are sealingly disposed between an area of the frame (93) and an area of a cooling plate (20), and / or between an area of the frame and an area of the bottom cover.
[Revendication 9] Compartiment (80) selon l’une des revendications précédentes, dans lequel un couvercle supérieur (98) est agencé pour s’appliquer contre le cadre pour fermer le compartiment, notamment avec interposition d’un joint d’étanchéité, notamment en matériau électriquement conducteur. [Claim 9] Compartment (80) according to one of the preceding claims, in which an upper cover (98) is arranged to bear against the frame to close the compartment, in particular with the interposition of a seal, in particular made of electrically conductive material.
[Revendication 10] Dispositif (1 ) de stockage d’énergie électrique comportant une pluralité de cellules de batterie (9) notamment disposées suivant une rangée, et un compartiment (2, 80) selon l’une des revendications précédentes, lesdites cellules (9) étant placées dans ce compartiment en interaction thermique avec la plaque de refroidissement (20).j [Claim 10] Device (1) for storing electrical energy comprising a plurality of battery cells (9) in particular arranged in a row, and a compartment (2, 80) according to one of the preceding claims, said cells (9) ) being placed in this compartment in thermal interaction with the cooling plate (20) .j
EP20828032.1A 2019-12-17 2020-12-02 Compartment for equipment likely to emit heat Pending EP4077011A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1914643A FR3104832B1 (en) 2019-12-17 2019-12-17 Compartment for equipment likely to generate heat
PCT/FR2020/052252 WO2021123538A1 (en) 2019-12-17 2020-12-02 Compartment for equipment likely to emit heat

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EP4077011A1 true EP4077011A1 (en) 2022-10-26

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US (1) US20230012599A1 (en)
EP (1) EP4077011A1 (en)
CN (1) CN114761268A (en)
FR (1) FR3104832B1 (en)
WO (1) WO2021123538A1 (en)

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Publication number Priority date Publication date Assignee Title
FR3127849A1 (en) * 2021-10-06 2023-04-07 Valeo Systemes Thermiques COMPARTMENT FOR EQUIPMENT LIKELY TO GENERATE HEAT
FR3130951B1 (en) * 2021-12-16 2023-11-10 Valeo Systemes Thermiques Cooling plate

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Publication number Priority date Publication date Assignee Title
JP2001047871A (en) * 1999-08-03 2001-02-20 Mitsubishi Engineering Plastics Corp Automobile under-hood component
US20110206967A1 (en) 2010-02-25 2011-08-25 Sanyo Electric Co., Ltd. Battery cooling/heating structure and battery module
DE102011084660B4 (en) 2011-10-18 2018-02-15 Bayerische Motoren Werke Aktiengesellschaft Device for power supply
CN106575804B (en) 2014-06-27 2019-09-24 达纳加拿大公司 More side heat exchangers with submissive heating surface
FR3054730B1 (en) * 2016-07-26 2021-05-14 Valeo Systemes Thermiques THERMAL REGULATION DEVICE FOR A VEHICLE BATTERY BY INDIRECT CONTACT
AT520018B1 (en) * 2017-06-13 2020-02-15 Miba Emobility Gmbh accumulator

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CN114761268A (en) 2022-07-15
FR3104832B1 (en) 2022-06-24
FR3104832A1 (en) 2021-06-18
US20230012599A1 (en) 2023-01-19
WO2021123538A1 (en) 2021-06-24

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