WO2019069021A1 - Battery pack protective casing incorporating a header - Google Patents

Battery pack protective casing incorporating a header Download PDF

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Publication number
WO2019069021A1
WO2019069021A1 PCT/FR2018/052437 FR2018052437W WO2019069021A1 WO 2019069021 A1 WO2019069021 A1 WO 2019069021A1 FR 2018052437 W FR2018052437 W FR 2018052437W WO 2019069021 A1 WO2019069021 A1 WO 2019069021A1
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WO
WIPO (PCT)
Prior art keywords
housing
manifold
transfer fluid
heat transfer
battery pack
Prior art date
Application number
PCT/FR2018/052437
Other languages
French (fr)
Inventor
Thibaut PERRIN
Mohamed Ibrahimi
Bastien Jovet
Sergio Da Costa Pito
Original Assignee
Valeo Systemes Thermiques
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 filed Critical Valeo Systemes Thermiques
Publication of WO2019069021A1 publication Critical patent/WO2019069021A1/en

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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
    • H01M10/62—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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to the field of thermal regulation of battery modules, in particular for a motor vehicle whose propulsion is provided in whole or in part by an electric motor, located in a protective casing forming, with the battery modules, a battery pack.
  • 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).
  • modules are enclosed in a rigid and waterproof protective housing (called “casing” in English), which protects the modules of the external environment.
  • the protective case which is conventionally made of metal has on its outer surface stiffening crosspieces.
  • 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.
  • Heat exchangers for regulating the temperature of the modules are therefore implemented in the enclosure of the housing to optimize the operation of the modules.
  • These heat exchangers are traversed by a heat transfer fluid and provides the heating and / or cooling functions 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.
  • each of the heat exchangers has a water box or collector box which is assembled to a collector plate in which uncorking tubes of a heat transfer fluid able to heat exchange with the battery modules.
  • the water box or header box has a fluid inlet and a coolant outlet.
  • the invention aims to overcome the disadvantages described above.
  • the subject of the invention is a protective case for at least one electric battery module comprising at least one heat exchanger for thermally regulating the at least one battery module.
  • the protective housing is integral with at least one header for supplying said heat transfer fluid with at least one heat exchanger and configured to stiffen the protective housing.
  • the invention consists in changing the architecture of the housing of the battery pack by integrating the function of collector box for the heat transfer fluid for cooling the battery pack modules.
  • the heat transfer fluid is conveyed via one or more manifolds integrated into the battery pack housing.
  • the one or more collector boxes make it possible to link the different heat exchangers and the distribution circuits of the inner enclosure of the housing, thus achieving a closed circuit, and to ensure a structural function (stiffness). .
  • the water box or boxes are thus adapted to consolidate the housing, especially when the latter is made of plastic composite.
  • the collector boxes can also be nannies (which can be for example equipped with several connections) to optimize the circulation of heat transfer fluid to areas requiring greater heat exchange.
  • the solution of the invention 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 indirectly by a coolant.
  • said at least one manifold has four branches forming a cross.
  • said at least one manifold has three branches forming a "Y".
  • the ends of said branches are integral with the inner surface of the peripheral wall of said housing.
  • said at least one manifold is in the form of a cross member connecting two opposite edges of the peripheral wall of said housing.
  • said at least one heat exchanger is in the form of a plate carrying said at least one battery module and delimiting at least one heat transfer fluid transport circuit communicating with an inlet orifice. heat transfer fluid and a coolant outlet orifice provided on said at least one manifold.
  • the collector box (es) can also integrate the input and output function of the coolant.
  • said housing comprises two heat exchangers each in the form of a plate, the plates extending parallel around said at least one header.
  • the heat exchangers can be located at different heights, stepped, within the housing.
  • said at least one manifold forms the closure lid of said housing.
  • the manifold provides a sealing function of the housing.
  • said housing comprises two manifolds connecting two opposite edges of the peripheral wall of said housing and into which a bundle of heat transfer fluid circulation tubes.
  • said housing is manufactured at least in part from a plastic composite.
  • the invention also relates to a battery pack for hybrid or electric vehicle comprising a protective housing as described above, in which is housed at least one battery module.
  • FIGS. 1A to 1C are partial views of a battery pack case according to a first embodiment of the invention comprising a collector box which has a cross shape;
  • FIGS. 2A and 2B are partial views, from above and in section, of a battery pack case according to a second embodiment of the invention comprising a header box which has a cross-member shape;
  • FIG. 3 is a schematic sectional view of a battery pack housing according to a third embodiment of the invention.
  • FIG. 4 is a sectional view of a battery pack case according to a fourth embodiment of the invention comprising a manifold taking the form of a sealed closure of the case, and
  • FIG. 5 is a schematic view of a battery pack housing according to a fifth embodiment of the invention.
  • reference numeral 1 denotes a battery pack consisting of a hollow protective case 12 according to a first embodiment, and a battery consisting of an assembly of modules M housed in the enclosure of the case 12, the modules M comprising a cell assembly (cylindrical, prismatic or flexible type).
  • the battery module 12 of protection module M is sealed by a cover (not shown).
  • the protective housing 12 is made of composite material and comprises, in its interior space, one or more thermal control elements, or heat exchange elements, made of thermally conductive material.
  • the composite used to fabricate the walls of the protective case may be a plastic composite, such as a polymer reinforced with carbon fibers or glass fibers.
  • a rectangular plate-shaped thermal control element 10 is disposed on the rectangular bottom wall of the protective housing 12.
  • thermo control plate 10 In this element or thermal control plate 10 are defined heat transport fluid transport circuits (not shown) defined next to the battery modules M and allowing heat exchange with the modules M to regulate the temperature of the latter, and especially to cool them.
  • a water box or manifold 11 is disposed on the plate forming the thermal regulating element 10.
  • the water box 11 has four branches forming a cross.
  • a heat transfer fluid inlet port 11A and a heat transfer fluid outlet port 11B are provided at the center of the cross.
  • the inlet and outlet orifices 11A and 11B of the header box 11 respectively communicate with an input port 10A and an output port 10B formed on the upper surface. of the thermal regulation plate 10.
  • the input ports 10A and 10B output communicate with each of the heat transfer fluid transport circuits (not shown) defined next to the battery modules M.
  • the manifold 11 ensures the distribution of the coolant between the various parts of the housing 12 located on either side of its branches, and the connection of the battery pack 1 with the thermal control loop of the vehicle.
  • the manifold 11 further provides the stiffening of the protective housing 12 made of composite.
  • the manifold 11 is plastic, aluminum or stainless steel for example.
  • the four ends of the branches of the manifold 11 are integral with the inner surface 121 of the peripheral wall of the housing 12 extending from the bottom wall.
  • the battery modules M are arranged on the heat exchange plate between the branches of the manifold 11.
  • FIGS. 2A and 2B are partial views, from above and in section, of a housing 12 of a battery pack 1, according to a second embodiment, comprising a header box 11 which has a cross-member shape connecting two opposite sides of the housing 12 and stiffening the latter.
  • FIG. 2B shows the inlet orifice 11A of the manifold box 11 and a portion of a heat transfer fluid transport circuit 101 (not shown) defined in the thermal control plate 10 opposite the battery modules M , the thermal regulation plate 10 being disposed on the bottom wall 123 of the housing 12.
  • FIG. 3 is a partial and schematic sectional view of a housing 12 of a battery pack 1, according to a third embodiment, comprising a header box 11 connecting and distributing the coolant between the various parts of the housing 12, and two vertically spaced temperature control plates 10 on which battery modules M are arranged.
  • each of the thermal control plates 10 is defined a transport circuit 101 of a heat transfer fluid.
  • the manifold 11 may have a cross-shaped, "Y" -shaped or cross-type rectilinear shape, connecting at least two opposite edges of the peripheral wall of the housing 12 and stiffening the latter.
  • the branch or branches of the water box 11 are integral with the inner surface 121 of the peripheral wall of the housing 12. Furthermore, the manifold 11 bears on the bottom wall 123 of the housing 12 and passes through the two regulating plates thermal 10.
  • FIG. 4 is a sectional view of a package 12 of a battery pack 1, according to a fourth embodiment, comprising a collection box 11 in the form of a cover or cover allowing the housing 12 to be sealed.
  • the collector box 11 participates in the distribution of the coolant in a transport circuit 101 of a heat transfer fluid extending above (within the cover), below (at the bottom wall 123 of the housing 12) and on the sides (within the peripheral wall of the housing 12) of the battery modules M.
  • the manifold 11 integrates a structural function in that it brings stiffness and improves the mechanical strength of the housing 12.
  • the housing 12 comprises in its interior space two parallel and spaced-apart collecting boxes 11, called lateral collecting boxes, between which a bundle of parallel heat transfer fluid tubes T extends. intended to heat exchange with battery modules (not shown) arranged vis-à-vis (above and / or below) of the tubes T.
  • the two manifolds 11 connect two opposite edges of the peripheral wall of the housing 12, thereby stiffening the latter.
  • the heat transfer fluid inlet and outlet can be located on the same collector box or distributed over the two collector boxes.
  • the tubes T are here formed in a heat exchange plate 10 arranged at the bottom of the housing 12. It should be noted that in the embodiments described above, said at least one manifold can be mounted on the housing removably or no.

Abstract

The invention relates to a casing (12) protecting at least one electric battery module (M) comprising at least one heat exchanger (10) intended to thermally regulate said at least one battery module (M). According to the invention, the protective casing (12) is secured to at least one header (11) intended to supply heat-transfer fluid to said at least one heat exchanger (10) and configured to stiffen the protective casing (12).

Description

Boîtier de protection d'un pack batterie intégrant une boîte collectrice  Housing of protection of a battery pack integrating a collector box
1. Domaine de l'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, situés dans un boîtier de protection formant, avec les modules de batterie, un pack batterie. 2. Etat de la technique FIELD OF THE INVENTION The invention relates to the field of thermal regulation of battery modules, in particular for a motor vehicle whose propulsion is provided in whole or in part by an electric motor, located in a protective casing forming, with the battery modules, a battery pack. 2. State of the 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), qui protège les modules de l'environnement extérieur.  Generally, these modules are enclosed in a rigid and waterproof protective housing (called "casing" in English), which protects the modules of the external environment.
Le boîtier de protection qui est classiquement en métal présente sur sa surface extérieure des traverses de raidissement.  The protective case which is conventionally made of metal has on its outer surface stiffening crosspieces.
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 échangeurs thermiques destinés à réguler la température des modules sont donc mis en œuvre dans l'enceinte du boîtier pour optimiser le fonctionnement des modules.  Heat exchangers for regulating the temperature of the modules are therefore implemented in the enclosure of the housing to optimize the operation of the modules.
Ces échangeurs thermiques sont parcourus par un fluide caloporteur et assure les fonctions de chauffage et/ou de refroidissement des modules.  These heat exchangers are traversed by a heat transfer fluid and provides the heating and / or cooling functions 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.
De façon classique, chacun des échangeurs thermiques présente une boîte à eau ou boîte collectrice qui est assemblée à une plaque collectrice dans laquelle débouchent des tubes de circulation d'un fluide caloporteur aptes à échanger thermiquement avec les modules de batterie.  Conventionally, each of the heat exchangers has a water box or collector box which is assembled to a collector plate in which uncorking tubes of a heat transfer fluid able to heat exchange with the battery modules.
La boîte à eau ou boîte collectrice présente une entrée de fluide et une sortie de fluide caloporteur.  The water box or header box has a fluid inlet and a coolant outlet.
Or, la distribution du fluide caloporteur et le raccordement entre les boîtes collectrices des différents échangeurs thermiques nécessitent de multiples connexions fluidiques, qui sont encombrantes et réduisent de ce fait l'espace alloué à la réception de modules de batterie au sein du pack batterie.  However, the distribution of the coolant and the connection between the manifolds of the different heat exchangers require multiple fluid connections, which are cumbersome and therefore reduce the space allocated to the receipt of battery modules within the battery pack.
La mise en œuvre de ces tubulures d'acheminement du fluide caloporteur grève le poids du boîtier, nécessite de nombreuses opérations d'assemblage et augmente les risques de fuite de fluide caloporteur.  The implementation of these pipes for carrying heat transfer fluid strike the weight of the housing, requires many assembly operations and increases the risk of heat transfer fluid leakage.
3. Exposé de l'invention 3. Presentation of the invention
L'invention a pour but de pallier les inconvénients exposés ci-dessus.  The invention aims to overcome the disadvantages described above.
À cet effet, l'invention a pour objet un boîtier de protection d'au moins un module de batterie électrique comprenant au moins un échangeur thermique destiné à réguler thermiquement ledit au moins un module de batterie. Selon l'invention, le boîtier de protection est solidaire d'au moins une boîte collectrice destinée à alimenter en fluide caloporteur ledit au moins un échangeur thermique et configurée pour rigidifier le boîtier de protection. To this end, the subject of the invention is a protective case for at least one electric battery module comprising at least one heat exchanger for thermally regulating the at least one battery module. According to the invention, the protective housing is integral with at least one header for supplying said heat transfer fluid with at least one heat exchanger and configured to stiffen the protective housing.
L'invention consiste à faire évoluer l'architecture du boîtier du pack batteries en y intégrant la fonction de boite collectrice pour le fluide caloporteur destiné à refroidir les modules du pack batterie.  The invention consists in changing the architecture of the housing of the battery pack by integrating the function of collector box for the heat transfer fluid for cooling the battery pack modules.
Dans cette invention, l'acheminement du fluide caloporteur est réalisé via une ou plusieurs boîtes collectrices intégrées au boîtier du pack batterie.  In this invention, the heat transfer fluid is conveyed via one or more manifolds integrated into the battery pack housing.
Dans la nouvelle architecture proposée, le ou les boites collectrices permettent de faire le lien entre les différents échangeurs thermiques et les circuits de distribution de l'enceinte intérieure du boîtier, réalisant ainsi un circuit fermé, et d'assurer une fonction structurelle (raideur).  In the proposed new architecture, the one or more collector boxes make it possible to link the different heat exchangers and the distribution circuits of the inner enclosure of the housing, thus achieving a closed circuit, and to ensure a structural function (stiffness). .
La ou les boîtes à eau ou boîtes collectrices sont ainsi adaptées pour consolider le boîtier, notamment lorsque ce dernier est fabriqué en composite plastique.  The water box or boxes are thus adapted to consolidate the housing, especially when the latter is made of plastic composite.
Les avantages sont donc :  The advantages are therefore:
- un gain de masse du boîtier du fait de la suppression des tubulures d'acheminement du fluide ;  a gain in mass of the housing due to the elimination of the fluid delivery pipes;
- un gain en encombrement ;  a gain in size;
- un gain en nombre de pièces (moins d'opération d'assemblage).  a gain in number of pieces (less assembly operation).
Par ailleurs, il n'est plus nécessaire de prévoir des traverses de renfort sur la surface extérieure du boîtier, la ou les boîtes collectrices assurant cette fonction.  Furthermore, it is no longer necessary to provide reinforcing cross members on the outer surface of the housing, or the manifolds providing this function.
Les boites collectrices peuvent aussi être des nourrices (pouvant être par exemple équipés de plusieurs connections) permettant d'optimiser la circulation du fluide caloporteur vers les zones nécessitant un échange thermique plus important.  The collector boxes can also be nannies (which can be for example equipped with several connections) to optimize the circulation of heat transfer fluid to areas requiring greater heat exchange.
La solution de l'invention peut être employée 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 boîtier et refroidies de façon directe ou indirecte par un fluide caloporteur.  The solution of the invention 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 indirectly by a coolant.
Selon un aspect particulier de l'invention, ladite au moins une boîte collectrice présente quatre branches formant une croix.  According to a particular aspect of the invention, said at least one manifold has four branches forming a cross.
Selon un aspect particulier de l'invention, ladite au moins une boîte collectrice présente trois branches formant un "Y". Selon un aspect particulier de l'invention, les extrémités desdites branches sont solidaires de la surface intérieure de la paroi périphérique dudit boîtier. According to a particular aspect of the invention, said at least one manifold has three branches forming a "Y". According to a particular aspect of the invention, the ends of said branches are integral with the inner surface of the peripheral wall of said housing.
Selon un aspect particulier de l'invention, ladite au moins une boîte collectrice se présente sous la forme d'une traverse reliant deux bords opposés de la paroi périphérique dudit boîtier.  According to a particular aspect of the invention, said at least one manifold is in the form of a cross member connecting two opposite edges of the peripheral wall of said housing.
Selon un aspect particulier de l'invention, ledit au moins un échangeur thermique se présente sous la forme d'une plaque portant ledit au moins un module de batterie et délimitant au moins un circuit de transport de fluide caloporteur communiquant avec un orifice d'entrée de fluide caloporteur et un orifice de sortie de fluide caloporteur ménagés sur ladite au moins une boîte collectrice.  According to one particular aspect of the invention, said at least one heat exchanger is in the form of a plate carrying said at least one battery module and delimiting at least one heat transfer fluid transport circuit communicating with an inlet orifice. heat transfer fluid and a coolant outlet orifice provided on said at least one manifold.
La ou les boites collectrices peuvent aussi intégrer la fonction d'entrée et de sortie du fluide caloporteur.  The collector box (es) can also integrate the input and output function of the coolant.
Selon un aspect particulier de l'invention, ledit boîtier comprend deux échangeurs thermiques se présentant chacun sous la forme d'une plaque, les plaques s'étendant parallèlement autour de ladite au moins une boîte collectrice.  According to a particular aspect of the invention, said housing comprises two heat exchangers each in the form of a plate, the plates extending parallel around said at least one header.
Les échangeurs thermiques peuvent être situés à différentes hauteurs, de façon étagée, au sein du boîtier.  The heat exchangers can be located at different heights, stepped, within the housing.
Selon un aspect particulier de l'invention, ladite au moins une boîte collectrice forme le couvercle de fermeture dudit boîtier.  According to a particular aspect of the invention, said at least one manifold forms the closure lid of said housing.
La boite collectrice assure une fonction de fermeture étanche du boîtier.  The manifold provides a sealing function of the housing.
Selon un aspect particulier de l'invention, ledit boîtier comprend deux boîtes collectrices reliant deux bords opposés de la paroi périphérique dudit boîtier et dans lesquelles débouchent un faisceau de tubes de circulation de fluide caloporteur.  According to a particular aspect of the invention, said housing comprises two manifolds connecting two opposite edges of the peripheral wall of said housing and into which a bundle of heat transfer fluid circulation tubes.
Selon un aspect particulier de l'invention, ledit boîtier est fabriqué au moins en partie en composite plastique.  According to a particular aspect of the invention, said housing is manufactured at least in part from a plastic composite.
L'invention concerne également 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. 4. Liste des figures D'autres caractéristiques et avantages de l'invention ressortiront de la description ci-après, fournie à titre d'exemple non limitatif, et faite en référence aux dessins annexés, dans lesquels : The invention also relates to a battery pack for hybrid or electric vehicle comprising a protective housing as described above, in which is housed at least one battery module. 4. List of figures Other characteristics and advantages of the invention will emerge from the following description, given by way of non-limiting example, and with reference to the appended drawings, in which:
les figures 1A à 1C sont des vues partielles d'un boîtier de pack batterie selon un premier mode de réalisation de l'invention comprenant une boite collectrice qui présente une forme de croix ;  FIGS. 1A to 1C are partial views of a battery pack case according to a first embodiment of the invention comprising a collector box which has a cross shape;
les figures 2A et 2B sont des vues partielles, de dessus et en coupe, d'un boîtier de pack batterie selon un deuxième mode de réalisation de l'invention comprenant une boite collectrice qui présente une forme de traverse ;  FIGS. 2A and 2B are partial views, from above and in section, of a battery pack case according to a second embodiment of the invention comprising a header box which has a cross-member shape;
- la figure 3 est une vue schématique en coupe d'un boîtier de pack batterie selon un troisième mode de réalisation de l'invention ;  - Figure 3 is a schematic sectional view of a battery pack housing according to a third embodiment of the invention;
la figure 4 est une vue en coupe d'un boîtier de pack batterie selon un quatrième mode de réalisation de l'invention comprenant une boite collectrice prenant la forme d'un capot de fermeture étanche du boîtier, et  FIG. 4 is a sectional view of a battery pack case according to a fourth embodiment of the invention comprising a manifold taking the form of a sealed closure of the case, and
- la figure 5 est une vue schématique d'un boîtier de pack batterie selon un cinquième mode de réalisation de l'invention.  - Figure 5 is a schematic view of a battery pack housing according to a fifth embodiment of the invention.
5. Description détaillée de l'invention Les éléments identiques sur les différentes figures, portent les mêmes références. 5. Detailed Description of the Invention The identical elements in the various figures bear the same references.
Sur la figure 1A, la référence 1 désigne un pack batterie constitué d'un boîtier 12 de protection creux selon un premier mode de réalisation, et d'une batterie constituée d'un assemblage de modules M logés dans l'enceinte du boîtier 12, les modules M comprenant un assemblage de cellules (de type cylindrique, prismatique ou souple).  In FIG. 1A, reference numeral 1 denotes a battery pack consisting of a hollow protective case 12 according to a first embodiment, and a battery consisting of an assembly of modules M housed in the enclosure of the case 12, the modules M comprising a cell assembly (cylindrical, prismatic or flexible type).
Le boîtier 12 de protection de modules M de batterie est fermé de façon étanche par un couvercle (non représenté).  The battery module 12 of protection module M is sealed by a cover (not shown).
Le boîtier 12 de protection est fabriqué en matériau composite et comprend, dans son espace intérieur, un ou plusieurs éléments de régulation thermique, ou éléments d'échange thermique, fabriqués en matériau thermiquement conducteur. Le composite utilisé pour fabriquer les parois du boîtier de protection peut être un composite plastique, tel qu'un polymère à renfort de fibres de carbone ou de fibres de verre. The protective housing 12 is made of composite material and comprises, in its interior space, one or more thermal control elements, or heat exchange elements, made of thermally conductive material. The composite used to fabricate the walls of the protective case may be a plastic composite, such as a polymer reinforced with carbon fibers or glass fibers.
Dans l'exemple illustré, un élément de régulation thermique 10 en forme de plaque rectangulaire est disposé sur la paroi de fond rectangulaire du boîtier 12 de protection.  In the illustrated example, a rectangular plate-shaped thermal control element 10 is disposed on the rectangular bottom wall of the protective housing 12.
Dans cet élément ou plaque de régulation thermique 10 sont définis des circuits de transport d'un fluide caloporteur (non représentés) définis en regard des modules M de batterie et permettant des échanges thermiques avec les modules M pour réguler la température de ces derniers, et notamment pour les refroidir.  In this element or thermal control plate 10 are defined heat transport fluid transport circuits (not shown) defined next to the battery modules M and allowing heat exchange with the modules M to regulate the temperature of the latter, and especially to cool them.
Une boîte à eau ou boîte collectrice 11 est disposée sur la plaque formant l'élément de régulation thermique 10.  A water box or manifold 11 is disposed on the plate forming the thermal regulating element 10.
Comme illustré sur la vue partielle du pack batterie 1 de la figure 1B, la boîte à eau 11 présente quatre branches formant une croix.  As illustrated in the partial view of the battery pack 1 of Figure 1B, the water box 11 has four branches forming a cross.
Un orifice d'entrée 11A de fluide caloporteur et un orifice de sortie 11B de fluide caloporteur sont ménagés au centre de la croix.  A heat transfer fluid inlet port 11A and a heat transfer fluid outlet port 11B are provided at the center of the cross.
Comme illustré sur la vue partielle du pack batterie 1 de la figure 1C, les orifices d'entrée 11A et de sortie 11B de la boite collectrice 11 communiquent respectivement avec un port d'entrée 10A et un port de sortie 10B ménagés sur la surface supérieure de la plaque de régulation thermique 10.  As illustrated in the partial view of the battery pack 1 of FIG. 1C, the inlet and outlet orifices 11A and 11B of the header box 11 respectively communicate with an input port 10A and an output port 10B formed on the upper surface. of the thermal regulation plate 10.
Les ports d'entrée 10A et de sortie 10B communiquent avec chacun des circuits de transport d'un fluide caloporteur (non représentés) définis en regard des modules M de batterie.  The input ports 10A and 10B output communicate with each of the heat transfer fluid transport circuits (not shown) defined next to the battery modules M.
La boite collectrice 11 assure la distribution du fluide caloporteur entre les différentes parties du boîtier 12 situées de part et d'autres de ses branches, et le raccordement du pack batterie 1 avec la boucle de régulation thermique du véhicule.  The manifold 11 ensures the distribution of the coolant between the various parts of the housing 12 located on either side of its branches, and the connection of the battery pack 1 with the thermal control loop of the vehicle.
La boite collectrice 11 assure en outre la rigidification du boîtier 12 de protection fabriqué en composite.  The manifold 11 further provides the stiffening of the protective housing 12 made of composite.
La boite collectrice 11 est en plastique, aluminium ou inox par exemple.  The manifold 11 is plastic, aluminum or stainless steel for example.
Les quatre extrémités des branches de la boîte collectrice 11 sont solidaires de la surface intérieure 121 de la paroi périphérique du boîtier 12 s'étendant à partir de la paroi de fond. Les modules M de batterie sont disposés sur la plaque d'échange thermique entre les branches de la boîte collectrice 11. The four ends of the branches of the manifold 11 are integral with the inner surface 121 of the peripheral wall of the housing 12 extending from the bottom wall. The battery modules M are arranged on the heat exchange plate between the branches of the manifold 11.
Les figures 2A et 2B sont des vues partielles, de dessus et en coupe, d'un boîtier 12 d'un pack batterie 1, selon un deuxième mode de réalisation, comprenant une boite collectrice 11 qui présente une forme de traverse reliant deux côtés opposés du boîtier 12 et rigidifiant ce dernier. FIGS. 2A and 2B are partial views, from above and in section, of a housing 12 of a battery pack 1, according to a second embodiment, comprising a header box 11 which has a cross-member shape connecting two opposite sides of the housing 12 and stiffening the latter.
La figure 2B montre l'orifice d'entrée 11A de la boite collectrice 11 et une portion d'un circuit de transport 101 d'un fluide caloporteur (non représentés) défini dans la plaque de régulation thermique 10 en regard des modules M de batterie, la plaque de régulation thermique 10 étant disposée sur la paroi de fond 123 du boîtier 12.  FIG. 2B shows the inlet orifice 11A of the manifold box 11 and a portion of a heat transfer fluid transport circuit 101 (not shown) defined in the thermal control plate 10 opposite the battery modules M , the thermal regulation plate 10 being disposed on the bottom wall 123 of the housing 12.
La figure 3 est une vue en coupe partielle et schématique d'un boîtier 12 d'un pack batterie 1, selon un troisième mode de réalisation, comprenant une boite collectrice 11 assurant la liaison et la distribution du fluide caloporteur entre les différentes parties du boîtier 12, et deux plaques de régulation thermique 10 espacées verticalement, sur lesquelles sont disposés des modules M de batterie. FIG. 3 is a partial and schematic sectional view of a housing 12 of a battery pack 1, according to a third embodiment, comprising a header box 11 connecting and distributing the coolant between the various parts of the housing 12, and two vertically spaced temperature control plates 10 on which battery modules M are arranged.
Dans chacune des plaques de régulation thermique 10 est défini un circuit de transport 101 d'un fluide caloporteur.  In each of the thermal control plates 10 is defined a transport circuit 101 of a heat transfer fluid.
La boite collectrice 11 peut présenter une forme en croix, en "Y" ou rectiligne du type traverse, reliant au moins deux bords opposés de la paroi périphérique du boîtier 12 et rigidifiant ce dernier.  The manifold 11 may have a cross-shaped, "Y" -shaped or cross-type rectilinear shape, connecting at least two opposite edges of the peripheral wall of the housing 12 and stiffening the latter.
La ou les branches de la boîte à eau 11 sont solidaires de la surface intérieure 121 de la paroi périphérique du boîtier 12. Par ailleurs, la boîte collectrice 11 prend appui sur la paroi de fond 123 du boîtier 12 et traverse les deux plaques de régulation thermique 10.  The branch or branches of the water box 11 are integral with the inner surface 121 of the peripheral wall of the housing 12. Furthermore, the manifold 11 bears on the bottom wall 123 of the housing 12 and passes through the two regulating plates thermal 10.
La figure 4 est une vue en coupe d'un boîtier 12 d'un pack batterie 1, selon un quatrième mode de réalisation, comprenant une boite collectrice 11 prenant la forme d'un capot ou couvercle permettant la fermeture étanche du boîtier 12. FIG. 4 is a sectional view of a package 12 of a battery pack 1, according to a fourth embodiment, comprising a collection box 11 in the form of a cover or cover allowing the housing 12 to be sealed.
La boite collectrice 11 participe à la distribution du fluide caloporteur dans un circuit de transport 101 d'un fluide caloporteur s'étendant au-dessus (au sein du couvercle), en-dessous (au niveau de la paroi de fond 123 du boîtier 12) et sur les côtés (au sein de la paroi périphérique du boîtier 12) des modules M de batterie. The collector box 11 participates in the distribution of the coolant in a transport circuit 101 of a heat transfer fluid extending above (within the cover), below (at the bottom wall 123 of the housing 12) and on the sides (within the peripheral wall of the housing 12) of the battery modules M.
La boite collectrice 11 intègre une fonction structurelle en ce sens qu'elle apporte de la raideur et améliore la tenue mécanique du boîtier 12.  The manifold 11 integrates a structural function in that it brings stiffness and improves the mechanical strength of the housing 12.
Dans un cinquième mode de réalisation illustré schématiquement sur la figure 5, le boîtier 12 comprend dans son espace intérieur deux boites collectrices 11 espacées et parallèles, dites boites collectrices latérales, entre lesquelles s'étend un faisceau de tubes T parallèles de circulation de fluide caloporteur destinés à échanger thermiquement avec des modules de batterie (non représentés) disposés en vis-à-vis (dessus et/ou dessous) des tubes T. In a fifth embodiment illustrated schematically in FIG. 5, the housing 12 comprises in its interior space two parallel and spaced-apart collecting boxes 11, called lateral collecting boxes, between which a bundle of parallel heat transfer fluid tubes T extends. intended to heat exchange with battery modules (not shown) arranged vis-à-vis (above and / or below) of the tubes T.
Les extrémités des tubes T débouchent dans les deux boites collectrices 11. The ends of the tubes T open into the two manifolds 11.
Les deux boites collectrices 11 relient deux bords opposés de la paroi périphérique du boîtier 12, rigidifiant ainsi ce dernier. The two manifolds 11 connect two opposite edges of the peripheral wall of the housing 12, thereby stiffening the latter.
L'entrée et la sortie de fluide caloporteur peuvent être situées sur une même boite collectrice ou réparties sur les deux boites collectrices.  The heat transfer fluid inlet and outlet can be located on the same collector box or distributed over the two collector boxes.
Les tubes T sont ici ménagés dans une plaque 10 d'échange thermique disposées au fond du boîtier 12. II est à noter que dans les modes de réalisation décrits précédemment, ladite au moins une boite collectrice peut être montée sur le boîtier de façon amovible ou non.  The tubes T are here formed in a heat exchange plate 10 arranged at the bottom of the housing 12. It should be noted that in the embodiments described above, said at least one manifold can be mounted on the housing removably or no.

Claims

REVENDICATIONS
1. Boîtier (12) de protection d'au moins un module (M) de batterie électrique comprenant au moins un échangeur thermique (10) destiné à réguler thermiquement ledit au moins un module (M) de batterie, 1. Housing (12) for protecting at least one electric battery module (M) comprising at least one heat exchanger (10) for thermally regulating said at least one battery module (M),
caractérisé en ce que le boîtier (12) de protection est solidaire d'au moins une boîte collectrice (11) destinée à alimenter en fluide caloporteur ledit au moins un échangeur thermique (10) et configurée pour rigidifier le boîtier (12) de protection. characterized in that the housing (12) of protection is integral with at least one manifold (11) for supplying heat transfer fluid said at least one heat exchanger (10) and configured to stiffen the housing (12) protection.
2. Boîtier (12) selon la revendication 1, caractérisé en ce que ladite au moins une boîte collectrice (11) présente quatre branches formant une croix. 2. Housing (12) according to claim 1, characterized in that said at least one manifold (11) has four branches forming a cross.
3. Boîtier (12) selon la revendication 1, caractérisé en ce que ladite au moins une boîte collectrice (11) présente trois branches formant un "Y". 3. Housing (12) according to claim 1, characterized in that said at least one manifold (11) has three branches forming a "Y".
4. Boîtier (12) selon la revendication 2 ou 3, caractérisé en ce que les extrémités desdites branches sont solidaires de la surface intérieure (121) de la paroi périphérique dudit boîtier (12). 4. Housing (12) according to claim 2 or 3, characterized in that the ends of said branches are secured to the inner surface (121) of the peripheral wall of said housing (12).
5. Boîtier (12) selon la revendication 1, caractérisé en ce que ladite au moins une boîte collectrice (11) se présente sous la forme d'une traverse reliant deux bords opposés de la paroi périphérique dudit boîtier. 5. Housing (12) according to claim 1, characterized in that said at least one manifold (11) is in the form of a cross member connecting two opposite edges of the peripheral wall of said housing.
6. Boîtier (12) selon l'une des revendications 1 à 5, caractérisé en ce que ledit au moins un échangeur thermique (10) se présente sous la forme d'une plaque portant ledit au moins un module (M) de batterie et délimitant au moins un circuit de transport (101) de fluide caloporteur communiquant avec un orifice d'entrée (11A) de fluide caloporteur et un orifice de sortie (11B) de fluide caloporteur ménagés sur ladite au moins une boîte collectrice (11). 6. Housing (12) according to one of claims 1 to 5, characterized in that said at least one heat exchanger (10) is in the form of a plate carrying said at least one module (M) battery and delimiting at least one transport circuit (101) of heat transfer fluid communicating with a heat transfer fluid inlet (11A) and a heat transfer fluid outlet (11B) provided on said at least one manifold (11).
7. Boîtier (12) selon la revendication 6, caractérisé en ce qu'il comprend deux échangeurs thermiques (10) se présentant chacun sous la forme d'une plaque, les plaques s'étendant parallèlement autour de ladite au moins une boîte collectrice (11). 7. Housing (12) according to claim 6, characterized in that it comprises two heat exchangers (10) each in the form of a plate, the plates extending parallel around said at least one manifold ( 11).
8. Boîtier (12) selon la revendication 1, caractérisé en ce que ladite au moins une boîte collectrice (11) forme le couvercle de fermeture dudit boîtier (12). 8. Housing (12) according to claim 1, characterized in that said at least one header (11) forms the closure cover of said housing (12).
9. Boîtier (12) selon l'une des revendications 1 à 8, caractérisé en ce qu'il comprend deux boîtes collectrices (11) reliant deux bords opposés de la paroi périphérique dudit boîtier et dans lesquelles débouchent un faisceau de tubes (T) de circulation de fluide caloporteur. 9. Housing (12) according to one of claims 1 to 8, characterized in that it comprises two manifolds (11) connecting two opposite edges of the peripheral wall of said housing and into which open a bundle of tubes (T) circulation of heat transfer fluid.
10. Boîtier (12) selon l'une des revendications 1 à 9, caractérisé en ce qu'il est fabriqué au moins en partie en composite plastique. 10. Housing (12) according to one of claims 1 to 9, characterized in that it is manufactured at least partly of plastic composite.
PCT/FR2018/052437 2017-10-04 2018-10-03 Battery pack protective casing incorporating a header WO2019069021A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1759280A FR3071960A1 (en) 2017-10-04 2017-10-04 BOX FOR PROTECTING A BATTERY PACK INTEGRATING A COLLECTOR BOX
FR1759280 2017-10-04

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WO2019069021A1 true WO2019069021A1 (en) 2019-04-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974453A1 (en) * 2011-04-19 2012-10-26 Valeo Systemes Thermiques DEVICE FOR THERMALLY MANAGING A BATTERY PACK
US20140342195A1 (en) * 2012-01-05 2014-11-20 Electrovaya Inc. Fluid-cooled battery module containing battery cells

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974453A1 (en) * 2011-04-19 2012-10-26 Valeo Systemes Thermiques DEVICE FOR THERMALLY MANAGING A BATTERY PACK
US20140342195A1 (en) * 2012-01-05 2014-11-20 Electrovaya Inc. Fluid-cooled battery module containing battery cells

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