EP3676904A1 - Protective housing of a battery pack incorporating channels for transporting a heat-transfer fluid - Google Patents

Protective housing of a battery pack incorporating channels for transporting a heat-transfer fluid

Info

Publication number
EP3676904A1
EP3676904A1 EP18808413.1A EP18808413A EP3676904A1 EP 3676904 A1 EP3676904 A1 EP 3676904A1 EP 18808413 A EP18808413 A EP 18808413A EP 3676904 A1 EP3676904 A1 EP 3676904A1
Authority
EP
European Patent Office
Prior art keywords
housing
transfer fluid
shells
protection according
heat transfer
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
EP18808413.1A
Other languages
German (de)
French (fr)
Inventor
Thibaut PERRIN
Mohamed Ibrahimi
Bastien Jovet
Sergio Da Costa Pito
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 EP3676904A1 publication Critical patent/EP3676904A1/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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • 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
    • B60L50/66—Arrangements of batteries
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
    • 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
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • Housing for protecting a battery pack incorporating channels for transporting a heat transfer fluid
  • the invention relates to the field of thermal regulation of battery modules, in particular for a motor vehicle whose propulsion is supplied in whole or in part by an electric motor, located in a protective case forming, with the battery modules, a battery pack.
  • the invention relates to the structure of such a protective housing.
  • the electric energy storage cells are interconnected in order to create an electrical generator of desired voltage and capacity, and positioned in a battery module (called “module” in which follows).
  • casing in English, made of metal, which protects the modules of the external environment.
  • the protective case and the modules form a set generally called battery pack.
  • the battery pack generally disposed at the floor of the vehicle, covers a more and more consistent surface of the vehicle floor and sometimes even the bottom of the body it.
  • the battery modules may be subject to temperature variations that may in some cases cause their damage or even their destruction. Therefore, the thermal regulation of the modules is essential in order, on the one hand, to maintain them in good condition and, on the other hand, to ensure the reliability, autonomy, and performance of the vehicle.
  • Devices for regulating the temperature of the modules are therefore implemented to optimize the operation of the modules.
  • Such a thermal regulation device is traversed by a heat transfer fluid and performs the functions of heating and / or cooling of the modules.
  • the heat transfer fluid can thus absorb the heat emitted by each module to cool or as needed, it can bring him heat if the temperature of the module is insufficient for its proper operation.
  • One or more thermal control devices are generally positioned directly in contact with the modules (that is to say inside the battery pack).
  • the transport that is to say the supply of heat transfer fluid to these thermal control devices and its evacuation, is carried out through a network of tubings arranged either inside the protective housing, or to outside of it.
  • a first drawback of the implementation of a tubing network, whether internal or external to the protective housing, lies in the large number of components it implements.
  • a tubing network consists of a plurality of transport tubes interconnected mechanically.
  • the weight of the installation embedded in the vehicle is important, which is not satisfactory.
  • tubing network is relatively bulky.
  • the congestion of the tubing network limits the space allocated to the reception of the battery modules within the battery pack.
  • the present invention aims to solve these problems of the state of the art and proposes a protection housing of at least one electric battery module comprising at least one thermal control element of said at least one module in which a coolant.
  • said protective housing comprises at least one heat transfer fluid transport channel extending in at least one wall of the protective housing and fluidly connected to said at least one thermal regulation element.
  • the invention thus proposes to integrate the heat transfer fluid transport channels within the walls of the protective housing in which are housed the electric battery modules.
  • the casing makes it possible on the one hand to protect the battery modules from shocks and, on the other hand, to distribute the heat-transfer fluid towards thermal regulation elements implemented in the internal enclosure of the casing and arranged in thermal contact with the casing. the modules so as to regulate the temperature of the latter.
  • the invention therefore integrates the management of the coolant within the structure of the protective housing.
  • the structure of the housing and the heat transfer fluid transport channels are indissociable.
  • the walls of the protective housing consist of two half-shells which, after assembly delimit said at least one transport channel.
  • the protective housing is obtained by assembling two half-shells having complementary shapes that, once assembled, delimit cavities forming the heat transfer fluid transport channels within the wall of the housing.
  • said two half-shells are secured by welding, bonding or friction of said two half-shells of the housing between them until adhesion.
  • the battery modules are thus protected against shocks ("crash") and coolant leakage insofar as the inner chamber of the housing is kept sealed with respect to the heat transfer fluid transport circuit located in the walls of the housing.
  • a first half-shell comprises at least one groove and a second half-shell comprises at least one groove, said at least one groove being disposed facing each other and delimiting said at least one groove a transport channel after assembly of the two half-shells.
  • the protective housing is obtained by assembling two half-shells each having grooves located vis-à-vis and which, after assembly, delimit the transport channels of the coolant within the wall of the housing itself.
  • the two half-shells delimit after assembly at least one receiving slot of an edge of said at least one thermal regulation element fluidly connecting the latter to at least one transport channel.
  • the protective housing is in one piece.
  • the protective housing has only one part so that it is simple to manufacture.
  • said at least one heat transfer fluid transport channel is formed in said monoblock protective case during its manufacture by one of the following methods: three-dimensional printing (3D), pultrusion, lost wax casting, gas injection.
  • said at least one transport channel is delimited by at least one duct extending in said at least one wall of the protective housing.
  • the protective housing incorporates one or more conduits within these walls delimiting the transport channels.
  • the thickness of the walls of the protective case is not, or very little, increased compared to known cases of the prior art.
  • said at least one conduit is thermoformed or overmolded within said at least one wall of said protective housing.
  • thermoforming or overmolding allow to integrate in a simple and inexpensive way, the ducts within the walls of the protective housing of the electric battery modules.
  • the invention further proposes a battery pack for a hybrid or electric vehicle comprising a protective case as described above, in which at least one electric battery module thermally regulated by at least one thermal regulation element is housed.
  • Figure 1 which schematically illustrates the general principle of the invention is a top view, in section, of a battery pack implementing a protective housing according to the invention
  • Figure 2A is a side view, in partial section, of a protective case of a battery pack according to a first embodiment of the invention
  • Fig. 2B is an exploded view of the shield case of Fig. 2A;
  • Figure 3 is a schematic detail view, in section, of a protective housing of a battery pack according to a second embodiment of the invention;
  • Figure 4 is a sectional view illustrating a variant of the protective housing of Figure 3;
  • Figure 5 is a schematic detail view of a protective case of a battery pack according to a third embodiment of the invention.
  • FIG. 6 is a perspective view illustrating a variant of the protective case of FIG. 5;
  • Figure 7 is a perspective view illustrating another variant of the protective housing of Figure 5;
  • Figure 8 is a sectional view partially illustrating a protective case of a battery pack according to a fourth embodiment of the invention.
  • Figure 9 is another sectional view partially illustrating the protective housing of Figure 8.
  • FIG. 10 is a perspective view illustrating a variant of the protective case of FIG. 8. 5. Detailed Description of Embodiments
  • the electrical battery module protection casing of the invention comprises, within one or more of these walls, integrated channels for transporting a heat transfer fluid to one or more thermal regulation devices of the electric battery modules. and evacuation of the coolant out of the housing.
  • heat transfer fluid transport channels integrated in the walls of the protective housing thus allow the supply and discharge of heat transfer fluid temperature control devices which are arranged in the protective housing and placed in thermal contact with the battery modules.
  • the heat transfer fluid circulating in the thermal control devices makes it possible to regulate the temperature of the battery modules arranged in the enclosure of the housing.
  • FIG. 1 which schematically illustrates the general principle of the invention, is a top view, in section, of a battery pack P comprising a protection box B according to the invention in which electrical battery modules M are housed; .
  • the battery modules M are arranged in thermal contact with thermal regulation elements 9, thus making it possible to regulate their temperature.
  • the thermal regulation elements 9, which together form a thermal regulation device, comprise circuits for circulating a heat transfer fluid allowing the exchange of calories between each of the modules M and the corresponding thermal regulation element 9 .
  • the invention provides for providing channels 10 for conveying this fluid within the walls of the protective casing B.
  • the transport channels 10 thus extend in one or more walls of the protective housing B in order to supply and evacuate the coolant circulating in the circulation circuits of the various thermal regulation elements 9.
  • the protective housing B further comprises a connector 11 having an inlet port 111 and a discharge port 112 which makes it possible to connect the transport channels 10 with another part of the thermal regulation loop to the housing B of protection (including a circulation pump of the fluid in particular).
  • FIGS. 2A and 2B are diagrammatic detail views, in section, of a casing 1 for protecting a battery pack according to a first embodiment of the invention.
  • FIG. 2A shows a module M of electric battery resting on a thermal regulation element 9 connected to a channel 10 for transporting the heat transfer fluid formed in the protective casing 1.
  • the housing 1 of protection consists of two half-shells
  • the shapes of the half-shells 12a, 12b also delimit at least one slot 13 which makes it possible to connect the transport channel 10 fluidically to a thermal regulation element 9 fixed on the protective housing 1.
  • the slot 13 is dimensioned to receive, sealingly, an edge of the thermal control element 9 and to connect fluidly the transport channel 10 to the fluid circulation circuit extending in the thermal control element 9.
  • the first half-shell 12a has a first rectilinear portion 121 extended by a second rectilinear portion 122, inclined relative to the first portion 121 and having, at its free end, a rounded portion 123, the rounded portion 123 having a lip 124 (exploded view of Figure 2B).
  • the second half-shell 12b has a shape substantially corresponding to the first half-shell 12a.
  • first rectilinear portion 125 extended by a second rectilinear portion 126, inclined with respect to the first portion 125 and having, at its free end, a rounded portion 127, the rounded portion 127 having a third straight portion 128 extending parallel to the first straight portion 125 ( Figure 2B).
  • each half-shells 12a, 12b are located vis-à-vis so as to define a cavity forming the channel 10 for transporting the coolant.
  • the transport channel 10 has a substantially circular section.
  • the lip 124 of the first half-shell 12a is located vis-à-vis the third straight portion 128 of the second half-shell 12b so as to form the slot 13 for fixing the thermal control element 9 on the housing 1 and the fluid connection of the thermal control element 9 with the transport channel 10.
  • the half-shells 12a, 12b are made of plastic, metal or composite material.
  • the material used for the housing walls is chosen so that the latter has sufficient rigidity to protect the battery modules M it contains.
  • the half-shells 12a, 12b are joined together at the first 121, 125 and second 122, 126 rectilinear portions of the half-shells 12a, 12b, by gluing, by welding, or by friction of the two half-shells. hulls between them until adhesion.
  • Figure 3 is a schematic detail view, in section, of a housing 2 for protecting a battery pack according to a second embodiment of the invention.
  • the protective housing 2 consists of a double shell, or wall, comprising a first half-shell 21 disposed towards the outside of the housing 2 and a second half-shell 22 disposed towards the inside of the housing. 2 of protection.
  • the first 21 and second 22 half-shells respectively comprise rectilinear grooves 211, 221 of semi-hexagonal section which extend parallel to each other.
  • the grooves 221 of the first half-shell 21 are located opposite the grooves 221 of the second half-shell 22.
  • the grooves 211, 221 delimit channels 10 for transporting the coolant, of hexagonal section, within the double shell 20 of the protective housing.
  • the transport channels 10 thus has a hexagonal shape after joining the first 21 and second 22 half-shells.
  • FIG. 4 illustrates a variant of the second embodiment in which the grooves 211, 221 have a semi-elliptical section.
  • the transport channels 10 After joining the two half-shells 21, 22, the transport channels 10 and have an elliptical or oval shape.
  • FIGS. 3 and 4 are simple illustrative and non-limiting examples.
  • the channels may have a circular, rectangular, triangular, or trapezoidal shape, for example.
  • the first 21 and second 22 half-shells are made of plastic, metal or composite material.
  • the material used for the half-shells of the housing is chosen so that the latter has sufficient rigidity to protect the battery modules M it contains.
  • FIG. 5 is a schematic detail view of a protective case of a battery pack according to a third embodiment of the invention.
  • the protective housing 3 is monobloc and the transport channels 10 are defined directly in the walls of the housing 3 during its manufacture.
  • the protective housing 3 comprises, on at least one of these walls, a profile 31 protruding with respect to the inner surface of the wall 30 (that is to say the surface of the wall facing the wall). inside the case).
  • An inlet or supply port 311 and an outlet or discharge port 312 are provided at one end of the transport channels 10 for the supply and discharge of the coolant.
  • the profile 31 also has a plurality of pairs of openings 313 (intended for the inlet and outlet of the fluid, respectively) arranged along the profile 31 so as to allow the connection of the thermal regulation elements 9 to the transport channels 10 integrated into the housing 3.
  • the profile 31 comprises a supply channel 10 and a heat transfer medium outlet channel 10 communicating respectively with the inlet orifice 311 and the discharge orifice 312 respectively.
  • the channels 10 allow the heat transfer fluid to be transported to ten thermal regulation elements 9 (not shown) which are each connected with an opening pair 313.
  • thermal regulation elements 9 are connected on each side of the section 31 integrating the transport channels 10, ie ten thermal regulation elements in total.
  • FIG. 6 illustrates a variant of the protection box 3 of FIG. 5 in that the supply channel 10 and the heat transfer medium outlet channel 10 are superimposed.
  • Several pairs of apertures 313 high and low are arranged along the profile 31 so as to allow the connection of the thermal control elements 9 to the transport channels 10 integrated in the housing 3.
  • Figure 7 illustrates another variant of the protective housing 3 of Figure 5 in that it comprises three sections 31 spaced in the same plane and each having a single channel 10 of transport.
  • the central section 31a comprises an inlet orifice, or supply port, 311 which supplies heat transfer fluid temperature control elements 9 located on either side of the section 31a.
  • the thermal regulation elements 9 are fluidly connected to the central section 31a through the openings 313 formed on the side walls of the profile 31.
  • the two lateral sections 31b, 31c are located on each side of the central section
  • each of the lateral sections 31b, 31c comprises on a lateral edge openings 313 in which the thermal control elements 9 open, and a discharge orifice 312 of the heat transfer fluid located at the end of the transport channel 10.
  • the various monobloc protective housings 3 described in connection with FIGS. 5 to 7 are manufactured, for example, according to a three-dimensional printing method, the transport channels being formed during this printing step.
  • the monoblock housings 3 are produced by pultrusion, by lost wax molding, by gas injection, or by any other suitable method.
  • the monobloc protective housing 3 is made of plastic, metal or composite material.
  • the material used for the housing is chosen to have sufficient rigidity to protect the battery modules M it contains.
  • FIGS 8 and 9 schematically illustrate a protective case of a battery pack according to a fourth embodiment of the invention.
  • the protective casing 4 integrates, within its walls, a network of cylindrical ducts intended to distribute the heat transfer fluid to the thermal control elements 9, and to evacuate the coolant.
  • Figure 8 is a cross-sectional view of the housing 4 illustrating the walls 41 of the protective housing 4 in which the cylindrical ducts 42 are integrated.
  • the ducts 42 extend rectilinearly into the walls 41 and define channels 10 for transporting the coolant.
  • openings 411 are formed in the walls 41 so as to connect the thermal regulation elements 9 to the channels 10 (FIG. 9).
  • the protective housing 4 is made of plastic, metal or composite material.
  • the material used for the housing is chosen so that the latter has sufficient rigidity to protect the battery modules M it contains.
  • the ducts 42 are attached within the walls 41 of the casing 4 by thermoforming or overmolding.
  • FIG. 10 illustrates a variant of the protective casing 4 of FIG. 8 in that the ducts 42 snake within the wall 41 of the casing 4 so as to reach and distribute the heat-transfer fluid towards the various thermal regulation elements 9 (and to evacuate the coolant also).
  • conduits 42 in the thickness of the walls 41 of the protective casing 4 makes it possible to prevent coolant leaks in the inner enclosure of the protective casing 4 and the destruction of the battery modules M.
  • the invention thus proposes to integrate the heat transfer fluid transport channels within the walls of the protective housing in which the electric battery modules M are housed.
  • the housing makes it possible on the one hand to protect the battery modules M from shocks and, on the other hand, to transport the heat-transfer fluid towards thermal regulation elements implemented in the interior space of the casing and arranged in thermal contact. with the modules to regulate their temperature.
  • the invention makes it possible to integrate the management of the coolant within the structure of the protective casing.
  • the structure of the housing and the heat transfer fluid transport channels are indissociable.
  • the invention proposes to create the transport channels either:
  • the invention makes it possible to implement a network of heat transfer fluid transport channels within the walls of the protective casing for supplying thermal transfer elements with heat transfer fluid, and then for evacuating the heat transfer fluid having traveled through the elements. thermal regulation.
  • the invention makes it possible to reduce the number of components necessary for the management of the coolant.
  • the heat transfer fluid transport circuit being integrated in the walls of the protective housing, it is no longer necessary to implement a tubing network inside or outside the housing to transport the heat transfer fluid to the thermal control elements arranged in the protective housing.
  • the weight embedded in the vehicle is reduced, which optimizes the performance (autonomy and power, in particular) of the hybrid or electric vehicle.
  • the invention makes it possible to reduce the risks of leakage of the coolant within the protective housing in which the battery modules are housed.
  • the heat transfer fluid transport channels can be implemented on one or more of the walls of the housing.
  • the channels can therefore be integrated in the bottom wall, the side walls and / or the cover of the protective housing.
  • thermal regulation elements may be in the form of plate or tube exchangers arranged in the enclosure of the housing, or in the form of an arrangement of tubes or circulation channels. heat transfer fluid directly integrated into the wall or walls of the housing.
  • the walls of the protective housing are made of a material having good strength / mechanical resistance for an optimal weight.
  • the protective housing walls provide good protection of the battery modules housed in the latter against shocks ("crash").
  • this type of protective case can be used in any type of vehicle in the field of transport but also in the building industry and the tertiary sector, where electric batteries are contained in a housing and cooled directly or indirect by a fluid.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to a protective housing of at least one module (M) of an electric battery comprising at least one element (9) for thermal regulation of said at least one module (M), in which a heat-transfer fluid circulates. According to the invention, the protective housing comprises at least one channel (10) for transporting the heat-transfer fluid, extending in at least one wall of the protective housing (B, 1, 2, 3, 4) and in fluid connection with at least one thermal regulation element (9).

Description

Boîtier de protection d'un pack batterie intégrant des canaux de transport d'un fluide caloporteur  Housing for protecting a battery pack incorporating channels for transporting a heat transfer fluid
1. Domaine de l'invention 1. Field of the invention
L'invention se rapporte au domaine de la régulation thermique de modules de batterie, notamment pour un véhicule automobile dont la propulsion est fournie en tout ou partie par une motorisation électrique, situées dans un boîtier de protection formant, avec les modules de batterie, un pack batterie.  The invention relates to the field of thermal regulation of battery modules, in particular for a motor vehicle whose propulsion is supplied in whole or in part by an electric motor, located in a protective case forming, with the battery modules, a battery pack.
Plus précisément, l'invention concerne la structure d'un tel boîtier de protection.  More specifically, the invention relates to the structure of such a protective housing.
2. Art antérieur 2. Prior Art
Dans le domaine des véhicules électriques et hybrides, les cellules de stockage d'énergie électrique sont reliées entre elles de façon à créer un générateur électrique de tension et de capacité désirée, et positionnées dans un module de batterie (appelé "module" dans ce qui suit).  In the field of electric and hybrid vehicles, the electric energy storage cells are interconnected in order to create an electrical generator of desired voltage and capacity, and positioned in a battery module (called "module" in which follows).
Plusieurs modules reliés entre eux forment la batterie du véhicule.  Several modules connected together form the battery of the vehicle.
Généralement, ces modules sont enfermés dans un boîtier de protection rigide et étanche (appelée « casing » en anglais), fabriqué en métal, qui protège les modules de l'environnement extérieur.  Generally, these modules are enclosed in a rigid and waterproof protection case (called "casing" in English), made of metal, which protects the modules of the external environment.
Le boîtier de protection et les modules forment un ensemble généralement appelé pack batterie.  The protective case and the modules form a set generally called battery pack.
Les constructeurs automobiles cherchent aujourd'hui à fournir des véhicules électriques ou hybrides plus puissants et dont l'autonomie électrique est augmentée.  Automakers are now looking to provide more powerful electric or hybrid vehicles with increased electric range.
Pour cela, un nombre de plus en plus important de modules est embarqué dans les véhicules.  For this, a growing number of modules is embedded in vehicles.
Ainsi, le pack batterie, généralement disposé au niveau du plancher du véhicule, couvre une surface de plus en plus conséquente du plancher du véhicule et forme même parfois le fond de caisse ce dernier.  Thus, the battery pack, generally disposed at the floor of the vehicle, covers a more and more consistent surface of the vehicle floor and sometimes even the bottom of the body it.
Par ailleurs, lors du fonctionnement du véhicule, les modules de batterie peuvent être soumis à des variations de température pouvant provoquer dans certains cas leur endommagement, voire leur destruction. Par conséquent, la régulation thermique des modules est essentielle afin, d'une part, de les maintenir en bon état et, d'autre part, d'assurer la fiabilité, l'autonomie, et la performance du véhicule. Moreover, during the operation of the vehicle, the battery modules may be subject to temperature variations that may in some cases cause their damage or even their destruction. Therefore, the thermal regulation of the modules is essential in order, on the one hand, to maintain them in good condition and, on the other hand, to ensure the reliability, autonomy, and performance of the vehicle.
Des dispositifs destinés à réguler la température des modules sont donc mis en œuvre pour optimiser le fonctionnement des modules.  Devices for regulating the temperature of the modules are therefore implemented to optimize the operation of the modules.
Un tel dispositif de régulation thermique est parcouru par un fluide caloporteur et assure les fonctions de chauffage et/ou de refroidissement des modules.  Such a thermal regulation device is traversed by a heat transfer fluid and performs the functions of heating and / or cooling of the modules.
Le fluide caloporteur peut ainsi absorber la chaleur émise par chaque module afin de le refroidir ou selon les besoins, il peut lui apporter de la chaleur si la température du module est insuffisante pour son bon fonctionnement.  The heat transfer fluid can thus absorb the heat emitted by each module to cool or as needed, it can bring him heat if the temperature of the module is insufficient for its proper operation.
Un ou plusieurs dispositifs de régulation thermique (selon le nombre de modules à refroidir) sont généralement positionnés directement au contact des modules (c'est-à-dire à l'intérieur du pack batterie).  One or more thermal control devices (depending on the number of modules to be cooled) are generally positioned directly in contact with the modules (that is to say inside the battery pack).
Le transport, c'est-à-dire l'alimentation du fluide caloporteur vers ces dispositifs de régulation thermique et son évacuation, est réalisée par le biais d'un réseau de tubulures disposées soit à l'intérieur du boîtier de protection, soit à l'extérieur de ce dernier.  The transport, that is to say the supply of heat transfer fluid to these thermal control devices and its evacuation, is carried out through a network of tubings arranged either inside the protective housing, or to outside of it.
Un premier inconvénient de la mise en œuvre d'un réseau de tubulures, qu'il soit interne ou externe au boîtier de protection, réside dans le nombre important de composants qu'il met en œuvre.  A first drawback of the implementation of a tubing network, whether internal or external to the protective housing, lies in the large number of components it implements.
En effet, un réseau de tubulures est constitué d'une pluralité de tubes de transport reliés entre eux mécaniquement.  Indeed, a tubing network consists of a plurality of transport tubes interconnected mechanically.
Ainsi, le poids de l'installation embarquée dans le véhicule est important, ce qui n'est pas satisfaisant.  Thus, the weight of the installation embedded in the vehicle is important, which is not satisfactory.
Par ailleurs, un tel réseau de tubulures est relativement encombrant.  Moreover, such a tubing network is relatively bulky.
Lorsqu'il est situé à l'intérieur du boîtier de protection, l'encombrement du réseau de tubulures limite l'espace alloué à la réception des modules de batterie au sein du pack batterie.  When located inside the protective case, the congestion of the tubing network limits the space allocated to the reception of the battery modules within the battery pack.
Ainsi, la puissance et l'autonomie électrique du véhicule ne sont pas maximisées.  Thus, the power and the electric autonomy of the vehicle are not maximized.
Lorsqu'il est situé à l'extérieur du boîtier de protection, l'encombrement du réseau de tubulures limite l'espace disponible pour l'installation et l'embarcation des autres composants du véhicule, ce qui n'est pas non plus satisfaisant. When located outside the protective case, the congestion of the tubing network limits the space available for installation and the craft of other components of the vehicle, which is not satisfactory either.
En outre, les connexions mécaniques entre les tubes de transport d'un tel réseau augmentent les risques de fuite du fluide caloporteur dans l'enceinte intérieure du pack batterie et, par conséquent, le risque de destruction des modules.  In addition, the mechanical connections between the transport tubes of such a network increase the risk of leakage of the coolant in the inner chamber of the battery pack and, therefore, the risk of destruction of the modules.
3. Résumé de l'invention 3. Summary of the invention
La présente invention a pour objet de résoudre ces problèmes de l'état de l'art et propose un boîtier de protection d'au moins un module de batterie électrique comprenant au moins un élément de régulation thermique dudit au moins un module dans lequel circule un fluide caloporteur.  The present invention aims to solve these problems of the state of the art and proposes a protection housing of at least one electric battery module comprising at least one thermal control element of said at least one module in which a coolant.
Selon l'invention, ledit boîtier de protection comprend au moins un canal de transport du fluide caloporteur s'étendant dans au moins une paroi du boîtier de protection et relié fluidiquement audit au moins un élément de régulation thermique.  According to the invention, said protective housing comprises at least one heat transfer fluid transport channel extending in at least one wall of the protective housing and fluidly connected to said at least one thermal regulation element.
L'invention propose ainsi d'intégrer les canaux de transport du fluide caloporteur au sein même des parois du boîtier de protection dans lequel sont logés les modules de batterie électrique.  The invention thus proposes to integrate the heat transfer fluid transport channels within the walls of the protective housing in which are housed the electric battery modules.
Ainsi, le boîtier permet d'une part de protéger les modules de batterie des chocs et d'autre part, de distribuer le fluide caloporteur vers des éléments de régulation thermique mis en œuvre dans l'enceinte intérieure du boîtier et disposés en contact thermique avec les modules de sorte à réguler la température de ces derniers.  Thus, the casing makes it possible on the one hand to protect the battery modules from shocks and, on the other hand, to distribute the heat-transfer fluid towards thermal regulation elements implemented in the internal enclosure of the casing and arranged in thermal contact with the casing. the modules so as to regulate the temperature of the latter.
L'invention intègre donc la gestion du fluide caloporteur au sein même de la structure du boîtier de protection.  The invention therefore integrates the management of the coolant within the structure of the protective housing.
La structure du boîtier et les canaux de transport du fluide caloporteur sont donc indissociables.  The structure of the housing and the heat transfer fluid transport channels are indissociable.
Selon un aspect de l'invention, les parois du boîtier de protection sont constituées de deux demi-coques qui, après assemblage délimitent ledit au moins un canal de transport.  According to one aspect of the invention, the walls of the protective housing consist of two half-shells which, after assembly delimit said at least one transport channel.
Ainsi, le boîtier de protection est obtenu par assemblage de deux demi-coques présentant des formes complémentaires qui permettent, une fois assemblées, de délimiter des cavités formant les canaux de transport du fluide caloporteur au sein même de la paroi du boîtier.  Thus, the protective housing is obtained by assembling two half-shells having complementary shapes that, once assembled, delimit cavities forming the heat transfer fluid transport channels within the wall of the housing.
La mise en œuvre de canaux de transport du fluide caloporteur au sein des parois du boîtier est relativement aisée à obtenir. The implementation of heat transfer fluid transport channels within the enclosure walls is relatively easy to obtain.
Selon un autre aspect de l'invention, lesdites deux demi-coques sont solidarisées par soudage, collage ou friction desdites deux demi-coques du boîtier entre elles jusqu'à adhésion.  According to another aspect of the invention, said two half-shells are secured by welding, bonding or friction of said two half-shells of the housing between them until adhesion.
Ces techniques de solidarisation permettent d'assurer une bonne tenue mécanique des demi-coques du boîtier entre elles tout en garantissant l'étanchéité entre les canaux de transport et l'enceinte intérieure du boîtier.  These joining techniques make it possible to ensure good mechanical strength of the half-shells of the housing between them while ensuring the seal between the transport channels and the inner enclosure of the housing.
Les modules de batteries sont ainsi protégés des chocs (« crash ») et des fuites de fluide caloporteur dans la mesure où l'enceinte intérieure du boîtier est maintenue étanche par rapport au circuit de transport du fluide caloporteur situé dans les parois du boîtier.  The battery modules are thus protected against shocks ("crash") and coolant leakage insofar as the inner chamber of the housing is kept sealed with respect to the heat transfer fluid transport circuit located in the walls of the housing.
Selon encore un autre aspect de l'invention, une première demi-coque comprend au moins une rainure et une deuxième demi-coque comprend au moins une rainure, lesdites au moins une rainure étant disposées en vis-à-vis et délimitant ledit au moins un canal de transport après assemblage des deux demi-coques.  According to yet another aspect of the invention, a first half-shell comprises at least one groove and a second half-shell comprises at least one groove, said at least one groove being disposed facing each other and delimiting said at least one groove a transport channel after assembly of the two half-shells.
Ainsi, le boîtier de protection est obtenu par assemblage de deux demi-coques présentant chacune des rainures situées en vis-à-vis et qui, après assemblage, délimitent les canaux de transport du fluide caloporteur au sein même de la paroi du boîtier.  Thus, the protective housing is obtained by assembling two half-shells each having grooves located vis-à-vis and which, after assembly, delimit the transport channels of the coolant within the wall of the housing itself.
Selon un aspect de l'invention, les deux demi-coques délimitent après assemblage au moins une fente de réception d'un bord dudit au moins un élément de régulation thermique reliant fluidiquement ce dernier audit au moins un canal de transport.  According to one aspect of the invention, the two half-shells delimit after assembly at least one receiving slot of an edge of said at least one thermal regulation element fluidly connecting the latter to at least one transport channel.
Selon un aspect de l'invention, le boîtier de protection est monobloc.  According to one aspect of the invention, the protective housing is in one piece.
Ainsi, le boîtier de protection ne présente qu'une seule partie de sorte à ce qu'il soit simple à fabriquer.  Thus, the protective housing has only one part so that it is simple to manufacture.
Selon un autre aspect de l'invention, ledit au moins un canal de transport du fluide caloporteur est formé dans ledit boîtier de protection monobloc lors de sa fabrication par un des procédés suivants : impression tridimensionnelle (3D), pultrusion, moulage à cire perdue, injection gaz.  According to another aspect of the invention, said at least one heat transfer fluid transport channel is formed in said monoblock protective case during its manufacture by one of the following methods: three-dimensional printing (3D), pultrusion, lost wax casting, gas injection.
Ces procédés de fabrication permettent de ménager directement les canaux de transport dans les parois du boîtier, lors de sa fabrication.  These manufacturing processes make it possible to directly protect the transport channels in the walls of the housing, during its manufacture.
Ainsi, aucune autre étape de fabrication n'est nécessaire pour délimiter les canaux dans les parois du boîtier. Thus, no other manufacturing step is necessary to delimit channels in the walls of the housing.
Selon un aspect de l'invention, ledit au moins un canal de transport est délimité par au moins un conduit s'étendant dans ladite au moins une paroi du boîtier de protection.  According to one aspect of the invention, said at least one transport channel is delimited by at least one duct extending in said at least one wall of the protective housing.
Ainsi, le boîtier de protection intègre un ou plusieurs conduits au sein même de ces parois délimitant les canaux de transport.  Thus, the protective housing incorporates one or more conduits within these walls delimiting the transport channels.
Cette solution permet de limiter les risques de fuite du fluide caloporteur dans l'enceinte intérieure du boîtier de protection.  This solution makes it possible to limit the risk of leakage of the heat transfer fluid into the inner enclosure of the protective housing.
L'intégration de conduits dédiés au transport du fluide caloporteur au sein des parois du boîtier permet de ne pas diminuer l'espace alloué à la réception des modules de batterie dans l'enceinte intérieure du boîtier.  The integration of ducts dedicated to the transport of the heat transfer fluid within the walls of the housing makes it possible not to reduce the space allocated to the reception of the battery modules in the interior enclosure of the housing.
L'épaisseur des parois du boîtier de protection n'est pas, ou très peu, augmentée par rapport aux boîtiers connus de l'art antérieure.  The thickness of the walls of the protective case is not, or very little, increased compared to known cases of the prior art.
Selon un autre aspect de l'invention, ledit au moins un conduit est thermoformé ou surmoulé au sein de ladite au moins une paroi dudit boîtier de protection.  According to another aspect of the invention, said at least one conduit is thermoformed or overmolded within said at least one wall of said protective housing.
Ces techniques, de thermoformage ou de surmoulage, permettent d'intégrer de manière simple et peu coûteuse, les conduits au sein des parois du boîtier de protection des modules de batterie électrique.  These techniques, thermoforming or overmolding, allow to integrate in a simple and inexpensive way, the ducts within the walls of the protective housing of the electric battery modules.
L'invention propose, en outre, un pack batterie pour véhicule hybride ou électrique comprenant un boîtier de protection tel que décrit précédemment, dans lequel est logé au moins un module de batterie électrique régulé thermiquement par au moins un élément de régulation thermique. The invention further proposes a battery pack for a hybrid or electric vehicle comprising a protective case as described above, in which at least one electric battery module thermally regulated by at least one thermal regulation element is housed.
4. Figures 4. Figures
D'autres caractéristiques et avantages apparaîtront plus clairement à la lecture de la description détaillée suivante de modes de réalisation particuliers de l'invention, donnés à titres de simples exemples illustratifs et non limitatifs, et des dessins annexés, parmi lesquels :  Other features and advantages will appear more clearly on reading the following detailed description of particular embodiments of the invention, given as simple illustrative and non-limiting examples, and the appended drawings, among which:
la figure 1 qui illustre schématiquement le principe général de l'invention, est une vue de dessus, en coupe, d'un pack batterie mettant en œuvre un boîtier de protection conforme à l'invention ;  Figure 1 which schematically illustrates the general principle of the invention is a top view, in section, of a battery pack implementing a protective housing according to the invention;
la figure 2A est une vue de côté, en coupe partielle, d'un boîtier de protection d'un pack batterie selon un premier mode de réalisation de l'invention ;  Figure 2A is a side view, in partial section, of a protective case of a battery pack according to a first embodiment of the invention;
la figure 2B est une vue éclatée du boîtier de protection de la figure 2A ; la figure 3 est une vue de détail schématique, en coupe, d'un boîtier de protection d'un pack batterie selon un deuxième mode de réalisation de l'invention ;  Fig. 2B is an exploded view of the shield case of Fig. 2A; Figure 3 is a schematic detail view, in section, of a protective housing of a battery pack according to a second embodiment of the invention;
la figure 4 est une vue en coupe illustrant une variante du boîtier de protection de la figure 3 ;  Figure 4 is a sectional view illustrating a variant of the protective housing of Figure 3;
la figure 5 est une vue de détail schématique d'un boîtier de protection d'un pack batterie selon un troisième mode de réalisation de l'invention ;  Figure 5 is a schematic detail view of a protective case of a battery pack according to a third embodiment of the invention;
- la figure 6 est une vue en perspective illustrant une variante du boîtier de protection de la figure 5 ;  FIG. 6 is a perspective view illustrating a variant of the protective case of FIG. 5;
la figure 7 est une vue perspective illustrant une autre variante du boîtier de protection de la figure 5 ;  Figure 7 is a perspective view illustrating another variant of the protective housing of Figure 5;
la figure 8 est une vue en coupe illustrant partiellement un boîtier de protection d'un pack batterie selon un quatrième mode de réalisation de l'invention ;  Figure 8 is a sectional view partially illustrating a protective case of a battery pack according to a fourth embodiment of the invention;
la figure 9 est une autre vue en coupe illustrant partiellement le boîtier de protection de la figure 8 ; et  Figure 9 is another sectional view partially illustrating the protective housing of Figure 8; and
la figure 10 est une vue perspective illustrant une variante du boîtier de protection de la figure 8. 5. Description détaillée de modes de réalisation FIG. 10 is a perspective view illustrating a variant of the protective case of FIG. 8. 5. Detailed Description of Embodiments
Le boîtier de protection de modules de batterie électrique de l'invention comprend, au sein d'une ou plusieurs de ces parois, des canaux intégrés permettant le transport d'un fluide caloporteur vers un ou plusieurs dispositifs de régulation thermique des modules de batterie électrique et l'évacuation du fluide caloporteur hors du boîtier.  The electrical battery module protection casing of the invention comprises, within one or more of these walls, integrated channels for transporting a heat transfer fluid to one or more thermal regulation devices of the electric battery modules. and evacuation of the coolant out of the housing.
Ces canaux de transport du fluide caloporteur intégrés aux parois du boîtier de protection permettent donc l'alimentation et l'évacuation du fluide caloporteur des dispositifs de régulation thermique qui sont disposés dans le boîtier de protection et placés en contact thermique avec les modules de batterie.  These heat transfer fluid transport channels integrated in the walls of the protective housing thus allow the supply and discharge of heat transfer fluid temperature control devices which are arranged in the protective housing and placed in thermal contact with the battery modules.
Le fluide caloporteur circulant dans les dispositifs de régulation thermique permet de réguler la température des modules de batterie disposés dans l'enceinte du boîtier.  The heat transfer fluid circulating in the thermal control devices makes it possible to regulate the temperature of the battery modules arranged in the enclosure of the housing.
Le boîtier de protection de l'invention assure une fonction structurelle classique permettant de protéger les modules de batterie de l'environnement extérieur au boîtier, et une fonction additionnelle d'alimentation du fluide caloporteur vers les différents dispositifs de régulation thermique disposés dans le boîtier de protection (et d'évacuation du fluide caloporteur hors de ces dispositifs). La figure 1, qui illustre schématiquement le principe général de l'invention, est une vue de dessus, en coupe, d'un pack batterie P comprenant un boîtier B de protection selon l'invention dans lequel sont logés des modules M de batterie électrique.  The protection casing of the invention provides a conventional structural function for protecting the battery modules from the external environment to the casing, and an additional function for supplying the heat transfer fluid to the various thermal regulation devices arranged in the casing of the casing. protection (and discharge of heat transfer fluid out of these devices). FIG. 1, which schematically illustrates the general principle of the invention, is a top view, in section, of a battery pack P comprising a protection box B according to the invention in which electrical battery modules M are housed; .
Les modules M de batterie sont disposés en contact thermique avec des éléments de régulation thermique 9, permettant ainsi de réguler leur température.  The battery modules M are arranged in thermal contact with thermal regulation elements 9, thus making it possible to regulate their temperature.
Pour ce faire, les éléments de régulation thermique 9, qui forment ensemble un dispositif de régulation thermique, comprennent des circuits de circulation d'un fluide caloporteur permettant l'échange de calories entre chacun des modules M et l'élément de régulation thermique 9 correspondant.  To this end, the thermal regulation elements 9, which together form a thermal regulation device, comprise circuits for circulating a heat transfer fluid allowing the exchange of calories between each of the modules M and the corresponding thermal regulation element 9 .
Afin d'alimenter en fluide caloporteur les éléments de régulation thermique 9 positionnés dans le boîtier B de protection, l'invention prévoit de ménager des canaux 10 de transport de ce fluide au sein des parois du boîtier B de protection. Les canaux 10 de transport s'étendent ainsi dans une ou plusieurs parois du boîtier B de protection afin d'alimenter et évacuer le fluide caloporteur circulant dans les circuits de circulation des différents éléments de régulation thermique 9. In order to supply heat transfer fluid with the thermal control elements 9 positioned in the protective casing B, the invention provides for providing channels 10 for conveying this fluid within the walls of the protective casing B. The transport channels 10 thus extend in one or more walls of the protective housing B in order to supply and evacuate the coolant circulating in the circulation circuits of the various thermal regulation elements 9.
Le boîtier B de protection comprend, en outre, un connecteur 11 présentant un orifice d'entrée 111 et un orifice d'évacuation 112 qui permet de relier les canaux 10 de transport avec une autre partie de la boucle de régulation thermique au boîtier B de protection (comprenant une pompe de mise en circulation du fluide notamment).  The protective housing B further comprises a connector 11 having an inlet port 111 and a discharge port 112 which makes it possible to connect the transport channels 10 with another part of the thermal regulation loop to the housing B of protection (including a circulation pump of the fluid in particular).
Les figures 2A et 2B sont des vues de détail schématiques, en coupe, d'un boîtier 1 de protection d'un pack batterie selon un premier mode de réalisation de l'invention. FIGS. 2A and 2B are diagrammatic detail views, in section, of a casing 1 for protecting a battery pack according to a first embodiment of the invention.
La figure 2A montre un module M de batterie électrique reposant sur un élément de régulation thermique 9 connecté à un canal 10 de transport du fluide caloporteur ménagé dans le boîtier 1 de protection.  FIG. 2A shows a module M of electric battery resting on a thermal regulation element 9 connected to a channel 10 for transporting the heat transfer fluid formed in the protective casing 1.
Plus précisément, le boîtier 1 de protection est constitué de deux demi-coques More specifically, the housing 1 of protection consists of two half-shells
12a, 12b dont les formes particulières permettent de délimiter au moins un canal 10 de transport du fluide caloporteur au sein d'une ou plusieurs parois du boîtier 1. 12a, 12b, the particular shapes of which delimit at least one channel 10 for transporting the coolant within one or more walls of the housing 1.
Les formes des demi-coques 12a, 12b délimitent également au moins une fente 13 qui permet de relier fluidiquement le canal 10 de transport à un élément de régulation thermique 9 fixé sur le boîtier 1 de protection.  The shapes of the half-shells 12a, 12b also delimit at least one slot 13 which makes it possible to connect the transport channel 10 fluidically to a thermal regulation element 9 fixed on the protective housing 1.
Plus précisément, la fente 13 est dimensionnée pour recevoir, de façon étanche, un bord de l'élément de régulation thermique 9 et pour relier fluidiquement le canal 10 de transport au circuit de circulation du fluide s'étendant dans l'élément de régulation thermique 9.  More specifically, the slot 13 is dimensioned to receive, sealingly, an edge of the thermal control element 9 and to connect fluidly the transport channel 10 to the fluid circulation circuit extending in the thermal control element 9.
Dans cet exemple, la première demi-coque 12a présente une première portion rectiligne 121 prolongée par une deuxième portion rectiligne 122, inclinée par rapport à la première portion 121 et présentant, à son extrémité libre, une portion arrondie 123, la portion arrondie 123 présentant une lèvre 124 (vue éclatée de la figure 2B).  In this example, the first half-shell 12a has a first rectilinear portion 121 extended by a second rectilinear portion 122, inclined relative to the first portion 121 and having, at its free end, a rounded portion 123, the rounded portion 123 having a lip 124 (exploded view of Figure 2B).
La deuxième demi-coque 12b présente une forme sensiblement correspondante à la première demi-coque 12a.  The second half-shell 12b has a shape substantially corresponding to the first half-shell 12a.
Elle présente ainsi une première portion rectiligne 125 prolongée par une deuxième portion rectiligne 126, inclinée par rapport à la première portion 125 et présentant, à son extrémité libre, une portion arrondie 127, la portion arrondie 127 présentant une troisième portion rectiligne 128 s'étendant parallèlement à la première portion rectiligne 125 (figure 2B). It thus has a first rectilinear portion 125 extended by a second rectilinear portion 126, inclined with respect to the first portion 125 and having, at its free end, a rounded portion 127, the rounded portion 127 having a third straight portion 128 extending parallel to the first straight portion 125 (Figure 2B).
Une fois les demi-coques assemblées (figure 2A), les portions rectilignes 121, 122 de la première demi-coque 12a viennent en contact avec les portions rectilignes 125, 126 de la deuxième demi-coque 12b.  Once assembled half-shells (Figure 2A), the rectilinear portions 121, 122 of the first half-shell 12a come into contact with the straight portions 125, 126 of the second half-shell 12b.
Les portions arrondies 123, 127 de chacune de demi-coques 12a, 12b sont situées en vis-à-vis de sorte à délimiter une cavité formant le canal 10 de transport du fluide caloporteur.  The rounded portions 123, 127 of each half-shells 12a, 12b are located vis-à-vis so as to define a cavity forming the channel 10 for transporting the coolant.
Dans cet exemple, le canal 10 de transport présente une section sensiblement circulaire.  In this example, the transport channel 10 has a substantially circular section.
La lèvre 124 de la première demi-coque 12a est située en vis-à-vis de la troisième portion rectiligne 128 de la deuxième demi-coque 12b de sorte à former la fente 13 permettant la fixation de l'élément de régulation thermique 9 sur le boîtier 1 et la connexion fluidique de l'élément de régulation thermique 9 avec le canal 10 de transport.  The lip 124 of the first half-shell 12a is located vis-à-vis the third straight portion 128 of the second half-shell 12b so as to form the slot 13 for fixing the thermal control element 9 on the housing 1 and the fluid connection of the thermal control element 9 with the transport channel 10.
Les demi-coques 12a, 12b sont fabriquées en matériau plastique, métallique ou composite.  The half-shells 12a, 12b are made of plastic, metal or composite material.
Plus précisément, le matériau utilisé pour les parois du boîtier est choisi afin que ce dernier présente une rigidité suffisante pour protéger les modules M de batterie qu'il contient.  More specifically, the material used for the housing walls is chosen so that the latter has sufficient rigidity to protect the battery modules M it contains.
La solidarisation des demi-coques 12a, 12b entre elles s'effectue au niveau des premières 121, 125 et deuxièmes 122, 126 portions rectilignes des demi-coques 12a, 12b, par collage, par soudure, ou bien par friction des deux demi-coques entre elles jusqu'à adhésion.  The half-shells 12a, 12b are joined together at the first 121, 125 and second 122, 126 rectilinear portions of the half-shells 12a, 12b, by gluing, by welding, or by friction of the two half-shells. hulls between them until adhesion.
La figure 3 est une vue de détail schématique, en coupe, d'un boîtier 2 de protection d'un pack batterie selon un deuxième mode de réalisation de l'invention. Figure 3 is a schematic detail view, in section, of a housing 2 for protecting a battery pack according to a second embodiment of the invention.
Dans cet exemple, le boîtier 2 de protection est constitué d'une double coque, ou paroi, 20 comprenant une première demi-coque 21 disposée vers l'extérieur du boîtier 2 et une deuxième demi-coque 22 disposée vers l'intérieur du boîtier 2 de protection. Les première 21 et deuxième 22 demi-coques comprennent respectivement des rainures 211, 221 rectiligne de section semi-hexagonale qui s'étendent parallèlement les unes par rapport aux autres. In this example, the protective housing 2 consists of a double shell, or wall, comprising a first half-shell 21 disposed towards the outside of the housing 2 and a second half-shell 22 disposed towards the inside of the housing. 2 of protection. The first 21 and second 22 half-shells respectively comprise rectilinear grooves 211, 221 of semi-hexagonal section which extend parallel to each other.
Les rainures 221 de la première demi-coque 21 sont situées en vis-à-vis des rainures 221 de la deuxième demi-coque 22.  The grooves 221 of the first half-shell 21 are located opposite the grooves 221 of the second half-shell 22.
Ainsi, après solidarisation des demi-coques 21, 22 entre elles, les rainures 211, 221 délimitent des canaux 10 de transport du fluide caloporteur, de section hexagonale, au sein de la double coque 20 du boîtier de protection.  Thus, after joining the half-shells 21, 22 between them, the grooves 211, 221 delimit channels 10 for transporting the coolant, of hexagonal section, within the double shell 20 of the protective housing.
Il est à noter que les canaux 10 de transport présente donc une forme hexagonale après solidarisation des première 21 et deuxième 22 demi-coques.  It should be noted that the transport channels 10 thus has a hexagonal shape after joining the first 21 and second 22 half-shells.
La figure 4 illustre une variante du deuxième mode de réalisation dans laquelle les rainures 211, 221 présentent une section semi elliptique. FIG. 4 illustrates a variant of the second embodiment in which the grooves 211, 221 have a semi-elliptical section.
Après solidarisation des deux demi-coques 21, 22, les canaux 10 de transport présentent ainsi une forme elliptique ou ovale.  After joining the two half-shells 21, 22, the transport channels 10 and have an elliptical or oval shape.
Les formes de rainures et de canaux représentées sur les figures 3 et 4 sont de simples exemples illustratifs et non limitatifs.  The shapes of grooves and channels shown in FIGS. 3 and 4 are simple illustrative and non-limiting examples.
D'autres formes de rainures, et donc de canaux, peuvent être mis en œuvre sans s'écarter du principe général de l'invention.  Other forms of grooves, and therefore channels, can be implemented without departing from the general principle of the invention.
Par exemple, les canaux peuvent présenter une forme circulaire, rectangulaire, triangulaire, ou trapézoïdale, par exemple.  For example, the channels may have a circular, rectangular, triangular, or trapezoidal shape, for example.
Les première 21 et deuxième 22 demi-coques sont fabriquées en matériau plastique, métallique ou composite.  The first 21 and second 22 half-shells are made of plastic, metal or composite material.
Plus précisément, le matériau utilisé pour les demi-coques du boîtier est choisi afin que ce dernier présente une rigidité suffisante pour protéger les modules M de batterie qu'il contient.  More specifically, the material used for the half-shells of the housing is chosen so that the latter has sufficient rigidity to protect the battery modules M it contains.
La solidarisation des demi-coques 21, 22 entre elles s'effectue par collage, par soudure, ou bien par friction des deux demi-coques 21, 22 entre elles jusqu'à adhésion. La figure 5 est une vue de détail schématique d'un boîtier de protection d'un pack batterie selon un troisième mode de réalisation de l'invention. Selon ce mode de réalisation particulier, le boîtier 3 de protection est monobloc et les canaux de transport 10 sont définis directement dans les parois du boîtier 3 lors de sa fabrication. The half-shells 21, 22 are joined together by bonding, by welding, or by friction of the two half-shells 21, 22 between them until adhesion. Figure 5 is a schematic detail view of a protective case of a battery pack according to a third embodiment of the invention. According to this particular embodiment, the protective housing 3 is monobloc and the transport channels 10 are defined directly in the walls of the housing 3 during its manufacture.
Dans cet exemple, le boîtier 3 de protection comprend, sur au moins une de ces parois, un profilé 31 faisant saillie par rapport à la surface intérieure de la paroi 30 (c'est-à-dire la surface de la paroi orientée vers l'intérieur du boîtier).  In this example, the protective housing 3 comprises, on at least one of these walls, a profile 31 protruding with respect to the inner surface of the wall 30 (that is to say the surface of the wall facing the wall). inside the case).
Au sein de ce profilé 31 sont ménagés les canaux 10 (non visibles) de transport du fluide caloporteur.  Within this section 31 are provided the channels 10 (not visible) for transporting the heat transfer fluid.
Un orifice d'entrée, ou d'alimentation, 311 et un orifice de sortie, ou d'évacuation, 312 sont ménagés à une extrémités des canaux 10 de transport afin de permettre l'alimentation et l'évacuation du fluide caloporteur.  An inlet or supply port 311 and an outlet or discharge port 312 are provided at one end of the transport channels 10 for the supply and discharge of the coolant.
Le profilé 31 présente également une pluralité de paire d'ouvertures 313 (destinées à l'entrée et la sortie du fluide respectivement) disposées tout au long du profilé 31 de sorte à permettre le raccordement des éléments de régulation thermique 9 aux canaux 10 de transport intégrés au boîtier 3.  The profile 31 also has a plurality of pairs of openings 313 (intended for the inlet and outlet of the fluid, respectively) arranged along the profile 31 so as to allow the connection of the thermal regulation elements 9 to the transport channels 10 integrated into the housing 3.
Il est à noter que, sur la figure 5, le profilé 31 comprend un canal 10 d'alimentation et un canal 10 d'évacuation du fluide caloporteur communiquant respectivement avec l'orifice d'entrée 311 et l'orifice d'évacuation 312 respectivement.  It should be noted that, in FIG. 5, the profile 31 comprises a supply channel 10 and a heat transfer medium outlet channel 10 communicating respectively with the inlet orifice 311 and the discharge orifice 312 respectively. .
Dans l'exemple illustré, les canaux 10 permettent le transport du fluide caloporteur vers dix éléments de régulation thermique 9 (non représentés) qui sont connectés chacun avec une paire d'ouverture 313.  In the illustrated example, the channels 10 allow the heat transfer fluid to be transported to ten thermal regulation elements 9 (not shown) which are each connected with an opening pair 313.
En l'occurrence, cinq éléments de régulation thermique 9 sont raccordés de chaque côté du profilé 31 intégrant les canaux 10 de transport, soit dix éléments de régulation thermique au total.  In this case, five thermal regulation elements 9 are connected on each side of the section 31 integrating the transport channels 10, ie ten thermal regulation elements in total.
La figure 6 illustre une variante du boîtier 3 de protection de la figure 5 en ce que le canal 10 d'alimentation et le canal 10 d'évacuation du fluide caloporteur sont superposés. Plusieurs paires d'ouvertures 313 hautes et basses (destinées à l'entrée et la sortie du fluide respectivement) sont disposées tout au long du profilé 31 de sorte à permettre le raccordement des éléments de régulation thermique 9 aux canaux 10 de transport intégrés au boîtier 3. La figure 7 illustre une autre variante du boîtier 3 de protection de la figure 5 en ce qu'il comprend trois profilés 31 espacés dans un même plan et présentant chacun un unique canal 10 de transport. FIG. 6 illustrates a variant of the protection box 3 of FIG. 5 in that the supply channel 10 and the heat transfer medium outlet channel 10 are superimposed. Several pairs of apertures 313 high and low (intended for the entry and exit of the fluid respectively) are arranged along the profile 31 so as to allow the connection of the thermal control elements 9 to the transport channels 10 integrated in the housing 3. Figure 7 illustrates another variant of the protective housing 3 of Figure 5 in that it comprises three sections 31 spaced in the same plane and each having a single channel 10 of transport.
Dans cet exemple, le profilé central 31a comprend un orifice d'entrée, ou orifice d'alimentation, 311 qui permet d'alimenter en fluide caloporteur les éléments de régulation thermique 9 situés de part et d'autre du profilé 31a.  In this example, the central section 31a comprises an inlet orifice, or supply port, 311 which supplies heat transfer fluid temperature control elements 9 located on either side of the section 31a.
Les éléments de régulation thermique 9 sont reliés fluidiquement au profilé central 31a par le biais des ouvertures 313 ménagées sur les parois latérales du profilé 31.  The thermal regulation elements 9 are fluidly connected to the central section 31a through the openings 313 formed on the side walls of the profile 31.
Les deux profilés latéraux 31b, 31c sont situés de chaque côté du profilé central The two lateral sections 31b, 31c are located on each side of the central section
31a et sont destinés à évacuer le fluide caloporteur ayant parcouru les éléments de régulation thermique 9. 31a and are intended to evacuate the coolant having traveled through the thermal regulation elements 9.
Pour ce faire, chacun des profilés latéraux 31b, 31c comprend sur un bord latéral des ouvertures 313 dans lesquelles débouchent les éléments de régulation thermique 9, et un orifice d'évacuation 312 du fluide caloporteur situé en extrémité du canal 10 de transport.  To do this, each of the lateral sections 31b, 31c comprises on a lateral edge openings 313 in which the thermal control elements 9 open, and a discharge orifice 312 of the heat transfer fluid located at the end of the transport channel 10.
Les différents boîtiers 3 de protection monoblocs décrits en relation avec les figures 5 à 7 sont fabriqués, par exemple, selon un procédé d'impression tridimensionnel, les canaux de transport étant formés lors de cette étape d'impression.  The various monobloc protective housings 3 described in connection with FIGS. 5 to 7 are manufactured, for example, according to a three-dimensional printing method, the transport channels being formed during this printing step.
Dans une variante, les boîtiers 3 monoblocs sont fabriqués par pultrusion, par moulage à cire perdue, par injection gaz, ou par tout autre procédé adapté.  In a variant, the monoblock housings 3 are produced by pultrusion, by lost wax molding, by gas injection, or by any other suitable method.
De préférence, le boîtier 3 de protection monobloc est fabriqué en matériau plastique, métallique ou composite.  Preferably, the monobloc protective housing 3 is made of plastic, metal or composite material.
Plus précisément, le matériau utilisé pour le boîtier est choisi afin de présenter une rigidité suffisante pour protéger les modules M de batterie qu'il contient.  More specifically, the material used for the housing is chosen to have sufficient rigidity to protect the battery modules M it contains.
Les figures 8 et 9 illustrent de façon schématique un boîtier de protection d'un pack batterie selon un quatrième mode de réalisation de l'invention. Figures 8 and 9 schematically illustrate a protective case of a battery pack according to a fourth embodiment of the invention.
Selon ce mode de réalisation particulier, le boîtier 4 de protection intègre, au sein de ses parois, un réseau de conduits cylindriques destinés à distribuer le fluide caloporteur vers les éléments de régulation thermique 9, et à évacuer le fluide caloporteur. La figure 8 est une vue en coupe transversale du boîtier 4 illustrant les parois 41 du boîtier 4 de protection dans lesquelles sont intégrées les conduits 42 cylindriques. According to this particular embodiment, the protective casing 4 integrates, within its walls, a network of cylindrical ducts intended to distribute the heat transfer fluid to the thermal control elements 9, and to evacuate the coolant. Figure 8 is a cross-sectional view of the housing 4 illustrating the walls 41 of the protective housing 4 in which the cylindrical ducts 42 are integrated.
Les conduits 42 s'étendent de façon rectiligne dans les parois 41 et délimitent des canaux 10 de transport du fluide caloporteur.  The ducts 42 extend rectilinearly into the walls 41 and define channels 10 for transporting the coolant.
Afin de distribuer le fluide caloporteur des canaux 10 de transport vers les éléments de régulation thermique 9, des ouvertures 411 sont ménagées dans les parois 41 de sorte à relier fluidiquement les éléments de régulation thermique 9 avec les canaux 10 (figure 9).  In order to distribute the heat transfer fluid from the transport channels 10 to the thermal control elements 9, openings 411 are formed in the walls 41 so as to connect the thermal regulation elements 9 to the channels 10 (FIG. 9).
Le boîtier 4 de protection est fabriqué en matériau plastique, métallique ou composite.  The protective housing 4 is made of plastic, metal or composite material.
Plus précisément, le matériau utilisé pour le boîtier est choisi afin que ce dernier présente une rigidité suffisante pour protéger les modules M de batterie qu'il contient.  More specifically, the material used for the housing is chosen so that the latter has sufficient rigidity to protect the battery modules M it contains.
Les conduits 42 sont rapportés au sein des parois 41 du boîtier 4 par thermoformage ou par surmoulage.  The ducts 42 are attached within the walls 41 of the casing 4 by thermoforming or overmolding.
La figure 10 illustre une variante du boîtier 4 de protection de la figure 8 en ce que les conduits 42 serpentent au sein de la paroi 41 du boîtier 4 de sorte à atteindre et distribuer le fluide caloporteur vers les différents éléments de régulation thermique 9 (et à évacuer le fluide caloporteur également). FIG. 10 illustrates a variant of the protective casing 4 of FIG. 8 in that the ducts 42 snake within the wall 41 of the casing 4 so as to reach and distribute the heat-transfer fluid towards the various thermal regulation elements 9 (and to evacuate the coolant also).
L'intégration de conduits 42 dans l'épaisseur des parois 41 du boîtier 4 de protection permet d'éviter les fuites de fluide caloporteur dans l'enceinte intérieure du boîtier 4 de protection et la destruction des modules M de batterie.  The integration of conduits 42 in the thickness of the walls 41 of the protective casing 4 makes it possible to prevent coolant leaks in the inner enclosure of the protective casing 4 and the destruction of the battery modules M.
Autres aspects et variantes Other aspects and variants
L'invention propose ainsi d'intégrer les canaux de transport du fluide caloporteur au sein des parois du boîtier de protection dans lequel sont logés les modules M de batterie électrique.  The invention thus proposes to integrate the heat transfer fluid transport channels within the walls of the protective housing in which the electric battery modules M are housed.
Ainsi, le boîtier permet d'une part de protéger les modules M de batterie des chocs et d'autre part, de transporter le fluide caloporteur vers des éléments de régulation thermique mis en œuvre dans l'espace intérieur du boîtier et disposés en contact thermique avec les modules de sorte à réguler leur température. En d'autres termes, l'invention permet d'intégrer la gestion du fluide caloporteur au sein même de la structure du boîtier de protection. Thus, the housing makes it possible on the one hand to protect the battery modules M from shocks and, on the other hand, to transport the heat-transfer fluid towards thermal regulation elements implemented in the interior space of the casing and arranged in thermal contact. with the modules to regulate their temperature. In other words, the invention makes it possible to integrate the management of the coolant within the structure of the protective casing.
La structure du boîtier et les canaux de transport du fluide caloporteur sont donc indissociables.  The structure of the housing and the heat transfer fluid transport channels are indissociable.
Pour ce faire, l'invention propose de créer les canaux de transport soit :  To do this, the invention proposes to create the transport channels either:
par assemblage de différentes parties/portions complémentaires du boîtier de protection (des demi-coques, en l'occurrence) ;  by assembling different parts / complementary portions of the protective case (half-shells, in this case);
directement lors de la fabrication du boîtier de protection, par des procédés tels que l'impression tridimensionnelle (3D), le moulage à cire perdue, l'injection gaz ou la pultrusion ;  directly during the manufacture of the protective case, by processes such as three-dimensional printing (3D), lost wax casting, gas injection or pultrusion;
par intégration de conduits dans les parois du boîtier de protection, par thermoformage ou surmoulage des conduits.  by integrating ducts in the walls of the protective casing, by thermoforming or overmolding the ducts.
L'invention permet de mettre en œuvre un réseau de canaux de transport du fluide caloporteur au sein des parois du boîtier de protection permettant d'alimenter en fluide caloporteur les éléments de régulation thermique, et ensuite d'évacuer le fluide caloporteur ayant parcouru les éléments de régulation thermique.  The invention makes it possible to implement a network of heat transfer fluid transport channels within the walls of the protective casing for supplying thermal transfer elements with heat transfer fluid, and then for evacuating the heat transfer fluid having traveled through the elements. thermal regulation.
Les modes de réalisation décrits précédemment sont donnés à titre de simples exemples illustratifs et non limitatifs.  The embodiments described above are given as simple illustrative and non-limiting examples.
Bien que non décrits, d'autres variantes ou une combinaison de certains de ces modes de réalisation entre eux ne peuvent être exclus.  Although not described, other variants or a combination of some of these embodiments between them can not be excluded.
Il est à noter que l'invention permet de réduire le nombre de composants nécessaire à la gestion du fluide caloporteur.  It should be noted that the invention makes it possible to reduce the number of components necessary for the management of the coolant.
En effet, le circuit de transport du fluide caloporteur étant intégré dans les parois du boîtier de protection, il n'est plus nécessaire de mettre en œuvre un réseau de tubulures à l'intérieur ou à l'extérieur du boîtier pour transporter le fluide caloporteur jusqu'aux éléments de régulation thermique disposés dans le boîtier de protection.  Indeed, the heat transfer fluid transport circuit being integrated in the walls of the protective housing, it is no longer necessary to implement a tubing network inside or outside the housing to transport the heat transfer fluid to the thermal control elements arranged in the protective housing.
Le poids embarqué dans le véhicule est donc diminué, ce qui permet d'optimiser les performances (autonomie et puissance, notamment) du véhicule hybride ou électrique.  The weight embedded in the vehicle is reduced, which optimizes the performance (autonomy and power, in particular) of the hybrid or electric vehicle.
Par ailleurs, l'invention permet de diminuer les risques de fuite du fluide caloporteur au sein du boîtier de protection dans lesquels sont logés les modules de batterie. Il est à noter que les canaux de transport du fluide caloporteur peuvent être mis en œuvre sur une seule ou plusieurs des parois du boîtier. Moreover, the invention makes it possible to reduce the risks of leakage of the coolant within the protective housing in which the battery modules are housed. It should be noted that the heat transfer fluid transport channels can be implemented on one or more of the walls of the housing.
Les canaux peuvent donc être intégrés dans la paroi de fond, les parois latérales et/ou le couvercle du boîtier de protection.  The channels can therefore be integrated in the bottom wall, the side walls and / or the cover of the protective housing.
II est à noter également que les éléments de régulation thermique peuvent se présenter sous la forme d'échangeurs à plaques ou à tubes disposés dans l'enceinte du boîtier, ou bien sous la forme d'un agencement de tubes ou de canaux de circulation de fluide caloporteur directement intégrés dans la ou les parois du boîtier.  It should also be noted that the thermal regulation elements may be in the form of plate or tube exchangers arranged in the enclosure of the housing, or in the form of an arrangement of tubes or circulation channels. heat transfer fluid directly integrated into the wall or walls of the housing.
Il est à noter, en outre, que les parois du boîtier de protection sont fabriquées dans un matériau présentant une bonne tenue/résistance mécanique pour un poids optimal.  It should be noted, moreover, that the walls of the protective housing are made of a material having good strength / mechanical resistance for an optimal weight.
Ainsi, les parois boîtier de protection assurent une bonne protection des modules de batterie logés dans ce dernier contre les chocs ("crash").  Thus, the protective housing walls provide good protection of the battery modules housed in the latter against shocks ("crash").
Sans limitation, ce type de boîtier de protection peut être employé dans tout type de véhicule dans le domaine des transports mais aussi dans le bâtiment, l'industrie et le tertiaire, où des batteries électriques sont contenues dans un boitier et refroidies de façon directe ou indirecte par un fluide.  Without limitation, this type of protective case can be used in any type of vehicle in the field of transport but also in the building industry and the tertiary sector, where electric batteries are contained in a housing and cooled directly or indirect by a fluid.

Claims

REVENDICATIONS
1. Boîtier (B, 1, 2, 3, 4) de protection d'au moins un module (M) de batterie électrique comprenant au moins un élément (9) de régulation thermique dudit au moins un module (M) dans lequel circule un fluide caloporteur, 1. Housing (B, 1, 2, 3, 4) for protecting at least one module (M) of electric battery comprising at least one element (9) of thermal regulation of said at least one module (M) in which circulates a heat transfer fluid,
caractérisé en ce qu'il comprend au moins un canal (10) de transport du fluide caloporteur s'étendant dans au moins une paroi du boîtier (B, 1, 2, 3, 4) de protection et relié fluidiquement audit au moins un élément (9) de régulation thermique. 2. Boîtier (B, 1, characterized in that it comprises at least one coolant transport channel (10) extending in at least one wall of the protective housing (B, 1, 2, 3, 4) and fluidly connected to the at least one element (9) thermal regulation. 2. Housing (B, 1,
2) de protection selon la revendication 1, caractérisé en ce que ses parois sont constituées de deux demi-coques (12a, 12b, 21, 22) qui, après assemblage délimitent ledit au moins un canal (10) de transport. 2) of protection according to claim 1, characterized in that its walls consist of two half-shells (12a, 12b, 21, 22) which, after assembly delimit said at least one channel (10) of transport.
3. Boîtier (B, 1, 2) de protection selon la revendication 2, caractérisé en ce que lesdites deux demi-coques (12a, 12b, 21, 22) sont solidarisées par soudage, collage ou friction desdites deux demi-coques entre elles jusqu'à adhésion. 3. housing (B, 1, 2) protection according to claim 2, characterized in that said two half-shells (12a, 12b, 21, 22) are secured by welding, gluing or friction of said two half-shells together until accession.
4. Boîtier (1, 2) de protection selon la revendication 2 ou 3, caractérisé en ce qu'une première demi-coque (21) comprend au moins une rainure (211) et une deuxième demi-coque (22) comprend au moins une rainure (221), lesdites au moins une rainure (211, 221) étant disposées en vis-à-vis et délimitant ledit au moins un canal (10) de transport après assemblage des deux demi-coques (21, 22). 4. Box (1, 2) of protection according to claim 2 or 3, characterized in that a first half-shell (21) comprises at least one groove (211) and a second half-shell (22) comprises at least a groove (221), said at least one groove (211, 221) being arranged vis-a-vis and defining said at least one transport channel (10) after assembly of the two half-shells (21, 22).
5. Boîtier (B, 1, 2) de protection selon la revendication 2 ou 3, caractérisé en ce que les deux demi-coques (12a ,12b) délimitent après assemblage au moins une fente (13) de réception d'un bord dudit au moins un élément (9) de régulation thermique reliant fluidiquement ce dernier audit au moins un canal (10) de transport. 5. Box (B, 1, 2) protection according to claim 2 or 3, characterized in that the two half-shells (12a, 12b) delimit after assembly at least one slot (13) for receiving an edge of said at least one thermal regulation element (9) fluidly connecting the latter to at least one transport channel (10).
6. Boîtier (B, 3) de protection selon la revendication 1, caractérisé en ce qu'il est monobloc. 6. Housing (B, 3) protection according to claim 1, characterized in that it is monobloc.
7. Boîtier (B, 3) de protection selon la revendication 6, caractérisé en ce que ledit au moins un canal (10) de transport du fluide caloporteur est formé dans ledit boîtier (B, 1, 3) de protection monobloc lors de sa fabrication par un des procédés suivants : 7. housing (B, 3) protection according to claim 6, characterized in that said at least one channel (10) for transporting the heat transfer fluid is formed in said housing (B, 1, 3) monobloc protection at its manufacture by one of the following processes:
- impression tridimensionnelle (3D),  - three-dimensional printing (3D),
- pultrusion,  - pultrusion,
- moulage à cire perdue,  - lost wax casting,
- injection gaz.  - gas injection.
8. Boîtier (B, 4) de protection selon la revendication 1, caractérisé en ce que ledit au moins un canal (10) de transport du fluide caloporteur est délimité par au moins un conduit (42) s'étendant dans ladite au moins une paroi du boîtier (B, 1, 2, 3, 4) de protection. 8. Housing (B, 4) protection according to claim 1, characterized in that said at least one channel (10) for transporting the coolant is defined by at least one conduit (42) extending in said at least one enclosure wall (B, 1, 2, 3, 4) of protection.
9. Boîtier (B, 4) de protection selon la revendication 8, caractérisé en ce que ledit au moins un conduit (42) est thermoformé ou surmoulé au sein de ladite au moins une paroi (41) dudit boîtier (B, 4) de protection. 9. Housing (B, 4) protection according to claim 8, characterized in that said at least one conduit (42) is thermoformed or overmoulded within said at least one wall (41) of said housing (B, 4) of protection.
10. Pack batterie pour véhicule hybride ou électrique comprenant un boîtier (B, 1, 2, 3, 4) de protection selon l'une des revendications 1 à 9, dans lequel est logé au moins un module (M) de batterie électrique régulé thermiquement par au moins un élément de régulation thermique (9). 10. Pack battery for hybrid or electric vehicle comprising a housing (B, 1, 2, 3, 4) protection according to one of claims 1 to 9, wherein is housed at least one module (M) of regulated electric battery thermally by at least one thermal regulating element (9).
EP18808413.1A 2017-10-04 2018-10-03 Protective housing of a battery pack incorporating channels for transporting a heat-transfer fluid Pending EP3676904A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1759281A FR3071961A1 (en) 2017-10-04 2017-10-04 BOX FOR PROTECTING A BATTERY PACK INTEGRATING TRANSPORT CHANNELS FROM A HEAT TRANSFER FLUID
PCT/FR2018/052438 WO2019069022A1 (en) 2017-10-04 2018-10-03 Protective housing of a battery pack incorporating channels for transporting a heat-transfer fluid

Publications (1)

Publication Number Publication Date
EP3676904A1 true EP3676904A1 (en) 2020-07-08

Family

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EP18808413.1A Pending EP3676904A1 (en) 2017-10-04 2018-10-03 Protective housing of a battery pack incorporating channels for transporting a heat-transfer fluid

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Country Link
US (1) US11495850B2 (en)
EP (1) EP3676904A1 (en)
CN (1) CN111602285B (en)
FR (1) FR3071961A1 (en)
WO (1) WO2019069022A1 (en)

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Publication number Priority date Publication date Assignee Title
EP4040577A4 (en) * 2020-04-22 2023-12-27 LG Energy Solution, Ltd. Battery pack and device including same
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CN111602285B (en) 2023-10-13
FR3071961A1 (en) 2019-04-05
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US11495850B2 (en) 2022-11-08
WO2019069022A1 (en) 2019-04-11

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