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EP3959099A1 - Battery with control unit integrated in a structural beam - Google Patents

Battery with control unit integrated in a structural beam

Info

Publication number
EP3959099A1
EP3959099A1 EP20725862.5A EP20725862A EP3959099A1 EP 3959099 A1 EP3959099 A1 EP 3959099A1 EP 20725862 A EP20725862 A EP 20725862A EP 3959099 A1 EP3959099 A1 EP 3959099A1
Authority
EP
European Patent Office
Prior art keywords
control unit
battery
motor vehicle
battery according
structuring
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
EP20725862.5A
Other languages
German (de)
French (fr)
Inventor
Eric Musement
Bertrand Feriot
Olivier Ciesielski
Frederic Perron
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.)
Stellantis Auto SAS
Original Assignee
PSA Automobiles SA
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 PSA Automobiles SA filed Critical PSA Automobiles SA
Publication of EP3959099A1 publication Critical patent/EP3959099A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • 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

  • the present invention relates to a battery with a control unit integrated into a structuring beam.
  • a battery In a manner known per se, a battery is intended to be disposed outside a passenger compartment of a motor vehicle.
  • the battery is generally placed under a floor of the motor vehicle.
  • the battery 1 comprises a plurality of electrical energy storage modules 2 for supplying electrical energy to an electric motor of the vehicle which may be of the electric type or of the hybrid type , that is to say a vehicle comprising a heat engine in addition to the electric motor.
  • Control units 3 called “CMC” for "Cell Monitoring Control” in English are able to transmit information (temperature, charge level, etc.) relating to an operating state of one or more modules electrical energy storage 2. This information is intended to be sent to a general control unit 4 of the battery 1 via a main wiring harness.
  • CMC Cell Monitoring Control
  • control units 3 can be integrated into modules 2 or externalized with respect to modules 2 for economic reasons.
  • control units 3 In the event that they are exteriorized, these control units 3 lose useful space for the installation of the storage modules 2 of electrical energy in a longitudinal direction and / or a transverse direction and / or a vehicle height.
  • control units 3 when the control units 3 are arranged on the sides of the motor vehicle as is the case in the configuration shown, they are located in a risk zone in the event of a side impact, known as a “post impact” in the context of the vehicle certifications.
  • the invention aims to effectively meet this need by providing a battery comprising:
  • At least one control unit capable of transmitting information relating to an operating state of at least one electrical energy storage module
  • control unit being placed inside a housing provided in the structural beam.
  • the invention thus makes it possible to limit the size of the control unit in order to improve the volume efficiency of the battery.
  • walls of the structural beam protect the control unit from external shocks.
  • the invention also makes it possible to facilitate the mounting of the control units which are easily accessible for their connection to an electrical harness of the motor vehicle.
  • the structuring beam comprises a multi-chamber hollow body.
  • the housing of the control unit comprises at least one chamber of the hollow body of the structuring beam, the chamber comprising an opening arranged so as to allow insertion of the control unit inside of said chamber, as well as its withdrawal.
  • two closed-volume chambers are arranged on either side of the control unit.
  • at least one connector of the control unit intended to be connected to an electrical harness is arranged vis-à-vis the opening.
  • control unit is held inside the housing by means of a fixing device.
  • the fixing device is a snap-fastening device.
  • the structuring beam comprises a through-fastening spacer for the passage of a fastening member making it possible to fix the structuring beam on a structural element of the motor vehicle.
  • the subject of the invention is also a motor vehicle characterized in that it comprises a battery as defined above.
  • the structuring beam is fixed to a cross member for fixing the seats of the motor vehicle.
  • FIG. 1 Figure 1, already described, is a perspective view of a battery according to the state of the art
  • Figure 2 is a perspective view of a battery according to the present invention.
  • FIG. 3 is a top view showing the housing intended to receive a control unit for one or more electrical energy storage modules;
  • Figure 4a is a cross sectional view of a structural beam in an unmachined area
  • Figure 4b is a cross-sectional view of a structural beam in a machined area for the integration of a control unit;
  • Figure 5 is a longitudinal sectional view of a structural beam illustrating the maintenance of a control unit in its housing by means of a snap-fastening device.
  • a longitudinal direction is a direction going from the rear towards the front of the vehicle and corresponding to a direction of longitudinal elongation of the vehicle.
  • a transverse direction, parallel to a train of the motor vehicle, is a direction perpendicular to the longitudinal direction and is located in a horizontal plane.
  • FIG. 2 shows a battery 10 intended to be arranged outside the passenger compartment of a motor vehicle.
  • the battery 10 may be placed in particular under a floor of the motor vehicle.
  • the battery 10 can be attached to side members or stretchers of the body of the motor vehicle.
  • the battery 10 comprises a plurality of storage modules 1 1 of electrical energy, for example lithium-ion type.
  • Control units 12 are able to transmit information (temperature, charge level, etc.) relating to an operating state of one or more storage modules 1 1. This information is intended to be sent to a general control unit of the battery 10 (cf. element referenced 4 in FIG. 1) via a main electrical harness. To this end, each control unit 12 is connected on the one hand to a storage module 1 1 via a first connector 14.1 and on the other hand to the general control unit via a second connector 14.2 connected to an electrical harness from of the main beam.
  • the storage modules 1 1 are also connected to a power bus in order to be able to circulate an electric power from the energy storage modules 1 1 to an electric traction machine and vice versa from the electric machine to the modules of storage 1 1 when the electric machine is operating in generator mode.
  • the structuring beams 15 In order to stiffen the assembly, the structuring beams 15 have a length extending in the transverse direction of the vehicle. A beam 15 is arranged between storage modules 1 1 adjacent. As a variant, in the case where the orientation of the storage modules 1 1 is changed, the structural beams 15 may have a length extending in the longitudinal direction of the vehicle.
  • the structuring beams 15 are preferably made of extruded aluminum in order to limit the weight of the assembly. As a variant, the structuring beams 15 could be made from another metallic material or from a composite material. The structuring beams 15 may belong to a battery box.
  • a control unit 12 is arranged inside a housing 16 formed in a structural beam 15.
  • a structuring beam 15 comprises a multi-chamber hollow body 17, as shown in FIGS. 4a and 4b.
  • the housing 16 of the control unit 12 consists of at least one chamber 19 of the hollow body 17.
  • the chamber 19 comprises an opening arranged so as to allow the insertion of the control unit 12 inside said. chamber 19, as well as the removal of the control unit 12 for maintenance in particular.
  • the hollow body 17 has seven chambers 19.
  • the hollow body 17 may of course include a different number of chambers 19.
  • the hollow body 17 has four horizontal walls 21 .1, 21 .2, 21 .3, 21 .4.
  • the two upper walls 21 .1 and 21 .2 are machined locally, so that the control unit 12 is placed inside a housing 16 formed by two chambers 19 of the structural beam 15, as can be seen. see in Figures 4b and 5.
  • the openings of the two walls 21 .1, 21 .2 are made in vertical coincidence, that is to say that the edges of the opening made in the wall 21 .1 coincide with the edges of the opening made in the wall 21 .2.
  • the number of rooms 19 necessary for receiving the control unit 12 can of course be adapted according to the size of the control unit 12 and the size of the rooms 19.
  • two closed-volume chambers 19 are arranged on either side of the control unit 12.
  • the chambers 19 arranged on either side of the control unit 12 each have, in view in section, their four corners so that the structural beam 15 retains sufficient rigidity enabling it to withstand the shock and torsional forces required in the event of an accident.
  • a control unit 12 is held inside the housing 16 by means of a fixing device 22 which advantageously takes the form of a ratchet device.
  • the latching device 22 comprises elastically deformable fins 24 each provided with a portion intended to bear against an edge of a horizontal wall of the structuring beam 15 when the control unit 12 is arranged at inside its housing 16.
  • the connectors 14.1, 14.2 of the control unit 12 each intended to be connected to an electrical harness 26 are arranged vis-à-vis the opening.
  • a structuring beam 15 comprises at least one through fixing spacer 25 for the passage of a fastening member, such as a screw, making it possible to fix the structuring beam 15 on a structural element of the motor vehicle.
  • the structuring beam 15 is advantageously fixed to a cross member for fixing the seats of the motor vehicle. Such a configuration makes it possible to stiffen the cross member for fixing the seats.
  • the invention thus makes it possible to limit the size of the control unit 12 in order to improve the volume efficiency of the battery.
  • the walls of the structural beam 15 make it possible to protect the control unit 12 from external shocks.
  • the invention also makes it possible to facilitate the mounting of the control units 12 which are easily accessible for their connection to an electrical harness of the motor vehicle.
  • the subject of the invention is also a motor vehicle comprising a battery 10 as defined above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention mainly relates to a battery (10) comprising: a plurality of modules (11) for storing electrical energy, at least one control unit (12) able to transmit information relating to an operating state of at least one electrical energy storage module (11), and at least one structural beam (15), the control unit (12) being disposed inside a housing (16) provided in the structural beam (15).

Description

DESCRIPTION DESCRIPTION

Titre de l'invention : BATTERIE A UNITE DE CONTRÔLE INTEGREE Title of the invention: BATTERY WITH INTEGRATED CONTROL UNIT

DANS UNE POUTRE STRUCTURANTE IN A STRUCTURING BEAM

[0001 ] La présente invention revendique la priorité de la demande française 1904259 déposée le 23.04.2019 dont le contenu (texte, dessins et revendications) est ici incorporé par référence. The present invention claims the priority of French application 1904259 filed on 04.23.2019, the content of which (text, drawings and claims) is incorporated here by reference.

[0002] La présente invention porte sur une batterie à unité de contrôle intégrée dans une poutre structurante. [0002] The present invention relates to a battery with a control unit integrated into a structuring beam.

[0003] De façon connue en soi, une batterie est destinée à être disposée à l'extérieur d'un habitacle d'un véhicule automobile. La batterie est généralement disposée sous un plancher du véhicule automobile. [0003] In a manner known per se, a battery is intended to be disposed outside a passenger compartment of a motor vehicle. The battery is generally placed under a floor of the motor vehicle.

[0004] Comme on peut le voir sur la figure 1 , la batterie 1 comporte une pluralité de modules de stockage 2 d’énergie électrique permettant d'alimenter en énergie électrique un moteur électrique du véhicule qui pourra être de type électrique ou de type hybride, c’est-à-dire un véhicule comportant un moteur thermique en plus du moteur électrique. As can be seen in Figure 1, the battery 1 comprises a plurality of electrical energy storage modules 2 for supplying electrical energy to an electric motor of the vehicle which may be of the electric type or of the hybrid type , that is to say a vehicle comprising a heat engine in addition to the electric motor.

[0005] Des unités de contrôle 3 dites "CMC" pour "Cell Monitoring Control" en anglais sont aptes à transmettre des informations (température, niveau de charge, etc...) relatives à un état de fonctionnement d'un ou plusieurs modules de stockage 2 d’énergie électrique. Ces informations sont destinées à être envoyées à une unité de commande générale 4 de la batterie 1 via un faisceau électrique principal. Control units 3 called "CMC" for "Cell Monitoring Control" in English are able to transmit information (temperature, charge level, etc.) relating to an operating state of one or more modules electrical energy storage 2. This information is intended to be sent to a general control unit 4 of the battery 1 via a main wiring harness.

[0006] Ces unités de contrôle 3 peuvent être intégrées à des modules 2 ou extériorisées par rapport aux modules 2 pour des raisons économiques. [0006] These control units 3 can be integrated into modules 2 or externalized with respect to modules 2 for economic reasons.

[0007] Dans le cas où elles sont extériorisées, ces unités de contrôle 3 font perdre de l’espace utile pour l’implantation des modules de stockage 2 d’énergie électrique suivant une direction longitudinale et/ou une direction transversale et/ou une hauteur du véhicule. En outre, lorsque les unités de contrôle 3 sont disposées sur les côtés du véhicule automobile comme cela est le cas dans la configuration représentée, elles se trouvent dans une zone à risque en cas de choc latéral, dit "choc poteau" dans le cadre des certifications du véhicule. In the event that they are exteriorized, these control units 3 lose useful space for the installation of the storage modules 2 of electrical energy in a longitudinal direction and / or a transverse direction and / or a vehicle height. In addition, when the control units 3 are arranged on the sides of the motor vehicle as is the case in the configuration shown, they are located in a risk zone in the event of a side impact, known as a “post impact” in the context of the vehicle certifications.

[0008] Il existe donc le besoin de pouvoir disposer les unités de contrôle dans une zone du véhicule automobile limitant la perte d’espace et garantissant leur protection contre les chocs. [0008] There is therefore a need to be able to place the control units in an area of the motor vehicle limiting the loss of space and guaranteeing their protection against impact.

[0009] L'invention vise à combler efficacement ce besoin en proposant une batterie comportant: [0009] The invention aims to effectively meet this need by providing a battery comprising:

- une pluralité de modules de stockage d’énergie électrique, - a plurality of electrical energy storage modules,

- au moins une unité de contrôle apte à transmettre des informations relatives à un état de fonctionnement d'au moins un module de stockage d’énergie électrique, et - at least one control unit capable of transmitting information relating to an operating state of at least one electrical energy storage module, and

- au moins une poutre structurante, - at least one structural beam,

- l’unité de contrôle étant disposée à l’intérieur d’un logement ménagé dans la poutre structurante. - the control unit being placed inside a housing provided in the structural beam.

[0010] L’invention permet ainsi de limiter l’encombrement de l'unité de contrôle afin d’améliorer un rendement volumique de la batterie. En outre, des parois de la poutre structurante permettent de protéger l'unité de contrôle des chocs externes. L’invention permet également de faciliter le montage des unités de contrôle qui sont aisément accessibles pour leur raccordement à un faisceau électrique du véhicule automobile. [0010] The invention thus makes it possible to limit the size of the control unit in order to improve the volume efficiency of the battery. In addition, walls of the structural beam protect the control unit from external shocks. The invention also makes it possible to facilitate the mounting of the control units which are easily accessible for their connection to an electrical harness of the motor vehicle.

[0011 ] Selon une réalisation, la poutre structurante comporte un corps creux multi- chambres. [0011] According to one embodiment, the structuring beam comprises a multi-chamber hollow body.

[0012] Selon une réalisation, le logement de l’unité de contrôle comporte au moins une chambre du corps creux de la poutre structurante, la chambre comportant une ouverture agencée de sorte à permettre une insertion de l'unité de contrôle à l'intérieur de ladite chambre, ainsi que son retrait. According to one embodiment, the housing of the control unit comprises at least one chamber of the hollow body of the structuring beam, the chamber comprising an opening arranged so as to allow insertion of the control unit inside of said chamber, as well as its withdrawal.

[0013] Selon une réalisation, deux chambres à volume fermé sont disposées de part et d'autre de l'unité de contrôle. [0014] Selon une réalisation, au moins un connecteur de l’unité de contrôle destiné à être relié à un faisceau électrique est disposé en vis-à-vis de l'ouverture. [0013] According to one embodiment, two closed-volume chambers are arranged on either side of the control unit. [0014] According to one embodiment, at least one connector of the control unit intended to be connected to an electrical harness is arranged vis-à-vis the opening.

[0015] Selon une réalisation, l’unité de contrôle est maintenue à l’intérieur du logement au moyen d’un dispositif de fixation. [0015] According to one embodiment, the control unit is held inside the housing by means of a fixing device.

[0016] Selon une réalisation, le dispositif de fixation est un dispositif de fixation par encliquetage. [0016] According to one embodiment, the fixing device is a snap-fastening device.

[0017] Selon une réalisation, la poutre structurante comporte une entretoise de fixation traversante pour le passage d'un organe de fixation permettant de fixer la poutre structurante sur un élément structurel du véhicule automobile. [0017] According to one embodiment, the structuring beam comprises a through-fastening spacer for the passage of a fastening member making it possible to fix the structuring beam on a structural element of the motor vehicle.

[0018] L'invention a également pour objet un véhicule automobile caractérisé en ce qu'il comporte une batterie telle que précédemment définie. [0018] The subject of the invention is also a motor vehicle characterized in that it comprises a battery as defined above.

[0019] Selon une réalisation, la poutre structurante est fixée sur une traverse de fixation de sièges du véhicule automobile. [0019] According to one embodiment, the structuring beam is fixed to a cross member for fixing the seats of the motor vehicle.

[0020] L’invention sera mieux comprise à la lecture de la description qui suit et à l’examen des figures qui l’accompagnent. Ces figures ne sont données qu’à titre illustratif mais nullement limitatif de l’invention. [0020] The invention will be better understood from reading the following description and examining the accompanying figures. These figures are given only by way of illustration but in no way limit the invention.

[0021 ] [Fig. 1 ] La figure 1 , déjà décrite, est une vue en perspective d'une batterie selon l'état de la technique; [0021] [Fig. 1] Figure 1, already described, is a perspective view of a battery according to the state of the art;

[0022] [Fig. 2] La figure 2 est une vue en perspective d'une batterie selon la présente invention; [0022] [Fig. 2] Figure 2 is a perspective view of a battery according to the present invention;

[0023] [Fig. 3] La figure 3 est une vue de dessus montrant le logement destiné à recevoir une unité de contrôle d'un ou plusieurs modules de stockage d'énergie électrique; [0023] [Fig. 3] FIG. 3 is a top view showing the housing intended to receive a control unit for one or more electrical energy storage modules;

[0024] [Fig. 4a] La figure 4a est une vue en coupe transversale d'une poutre structurante dans une zone non usinée; [0024] [Fig. 4a] Figure 4a is a cross sectional view of a structural beam in an unmachined area;

[0025] [Fig. 4b] La figure 4b est une vue en coupe transversale d'une poutre structurante dans une zone usinée pour l'intégration d'une unité de contrôle; [0026] [Fig. 5] La figure 5 est une vue en coupe longitudinale d'une poutre structurante illustrant le maintien d'une unité de contrôle dans son logement au moyen d'un dispositif de fixation par encliquetage. [0025] [Fig. 4b] Figure 4b is a cross-sectional view of a structural beam in a machined area for the integration of a control unit; [0026] [Fig. 5] Figure 5 is a longitudinal sectional view of a structural beam illustrating the maintenance of a control unit in its housing by means of a snap-fastening device.

[0027] Sur les figures 2 et suivantes, les éléments identiques, similaires, ou analogues conservent la même référence d'une figure à l'autre. In Figures 2 and following, identical, similar or similar elements retain the same reference from one figure to another.

[0028] Dans la description qui suit, une direction longitudinale est une direction allant de l'arrière vers l'avant du véhicule et correspondant à une direction d'allongement longitudinale du véhicule. Une direction transversale, parallèle à un train du véhicule automobile, est une direction perpendiculaire à la direction longitudinale et se situe dans un plan horizontal. In the following description, a longitudinal direction is a direction going from the rear towards the front of the vehicle and corresponding to a direction of longitudinal elongation of the vehicle. A transverse direction, parallel to a train of the motor vehicle, is a direction perpendicular to the longitudinal direction and is located in a horizontal plane.

[0029] La figure 2 montre une batterie 10 destinée à être disposée à l'extérieur de l'habitacle d'un véhicule automobile. La batterie 10 pourra être disposée notamment sous un plancher du véhicule automobile. La batterie 10 pourra être fixée sur des longerons ou des brancards de la caisse du véhicule automobile. Figure 2 shows a battery 10 intended to be arranged outside the passenger compartment of a motor vehicle. The battery 10 may be placed in particular under a floor of the motor vehicle. The battery 10 can be attached to side members or stretchers of the body of the motor vehicle.

[0030] La batterie 10 comporte une pluralité de modules de stockage 1 1 d’énergie électrique, par exemple de type lithium-ion. The battery 10 comprises a plurality of storage modules 1 1 of electrical energy, for example lithium-ion type.

[0031 ] Des unités de contrôle 12 sont aptes à transmettre des informations (température, niveau de charge, etc...) relatives à un état de fonctionnement d'un ou plusieurs modules de stockage 1 1 . Ces informations sont destinées à être envoyées à une unité de commande générale de la batterie 10 (cf. élément référencé 4 sur la figure 1 ) via un faisceau électrique principal. A cet effet, chaque unité de contrôle 12 est connectée d'une part à un module de stockage 1 1 via un premier connecteur 14.1 et d'autre part à l'unité de commande générale via un deuxième connecteur 14.2 relié à un faisceau électrique issu du faisceau principal. Control units 12 are able to transmit information (temperature, charge level, etc.) relating to an operating state of one or more storage modules 1 1. This information is intended to be sent to a general control unit of the battery 10 (cf. element referenced 4 in FIG. 1) via a main electrical harness. To this end, each control unit 12 is connected on the one hand to a storage module 1 1 via a first connector 14.1 and on the other hand to the general control unit via a second connector 14.2 connected to an electrical harness from of the main beam.

[0032] Les modules de stockage 1 1 sont également connectés à un bus de puissance afin de pouvoir faire circuler une puissance électrique des modules de stockage 1 1 d'énergie vers une machine électrique de traction et inversement de la machine électrique vers les modules de stockage 1 1 lorsque la machine électrique fonctionne dans un mode générateur. [0033] Afin de rigidifier l’ensemble, des poutres structurantes 15 présentent une longueur s’étendant suivant la direction transversale du véhicule. Une poutre 15 est disposée entre des modules de stockage 1 1 adjacents. En variante, dans le cas où l'on modifie l'orientation des modules de stockage 1 1 , les poutres structurantes 15 pourront présenter une longueur s'étendant suivant la direction longitudinale du véhicule. Les poutres structurantes 15 sont réalisées de préférence en aluminium extrudé afin de limiter le poids de l’ensemble. En variante, les poutres structurantes 15 pourront être réalisées dans un autre matériau métallique ou dans un matériau composite. Les poutres structurantes 15 pourront appartenir à un bac de batterie. The storage modules 1 1 are also connected to a power bus in order to be able to circulate an electric power from the energy storage modules 1 1 to an electric traction machine and vice versa from the electric machine to the modules of storage 1 1 when the electric machine is operating in generator mode. In order to stiffen the assembly, the structuring beams 15 have a length extending in the transverse direction of the vehicle. A beam 15 is arranged between storage modules 1 1 adjacent. As a variant, in the case where the orientation of the storage modules 1 1 is changed, the structural beams 15 may have a length extending in the longitudinal direction of the vehicle. The structuring beams 15 are preferably made of extruded aluminum in order to limit the weight of the assembly. As a variant, the structuring beams 15 could be made from another metallic material or from a composite material. The structuring beams 15 may belong to a battery box.

[0034] Comme on peut le voir sur les figures 2 et 3, une unité de contrôle 12 est disposée à l’intérieur d’un logement 16 ménagé dans une poutre structurante 15. As can be seen in Figures 2 and 3, a control unit 12 is arranged inside a housing 16 formed in a structural beam 15.

[0035] Plus précisément, une poutre structurante 15 comporte un corps creux 17 multi- chambres, tel que montré sur les figures 4a et 4b. Le logement 16 de l’unité de contrôle 12 est constitué par au moins une chambre 19 du corps creux 17. La chambre 19 comporte une ouverture agencée de sorte à permettre l'insertion de l'unité de contrôle 12 à l'intérieur de ladite chambre 19, ainsi que le retrait de l'unité de contrôle 12 pour la maintenance notamment. More specifically, a structuring beam 15 comprises a multi-chamber hollow body 17, as shown in FIGS. 4a and 4b. The housing 16 of the control unit 12 consists of at least one chamber 19 of the hollow body 17. The chamber 19 comprises an opening arranged so as to allow the insertion of the control unit 12 inside said. chamber 19, as well as the removal of the control unit 12 for maintenance in particular.

[0036] Dans l'exemple représenté sur les figures 4a et 4b, le corps creux 17 comporte sept chambres 19. En variante, le corps creux 17 pourra bien entendu comporter un nombre différent de chambres 19. Le corps creux 17 comporte quatre parois horizontales 21 .1 , 21 .2, 21 .3, 21 .4. Les deux parois supérieures 21 .1 et 21 .2 sont usinées localement, de sorte que l’unité de contrôle 12 est disposée à l’intérieur d'un logement 16 constitué par deux chambres 19 de la poutre structurante 15, comme on peut le voir sur les figures 4b et 5. Les ouvertures des deux parois 21 .1 , 21 .2 sont réalisées en coïncidence verticale, c’est-à-dire que les bords de l'ouverture réalisée dans la paroi 21 .1 coïncident avec les bords de l'ouverture réalisée dans la paroi 21 .2. Le nombre de chambres 19 nécessaires à la réception de l'unité de contrôle 12 pourra bien entendu être adapté en fonction de la taille de l'unité de contrôle 12 et de la taille des chambres 19. [0037] De préférence, deux chambres 19 à volume fermé sont disposées de part et d'autre de l'unité de contrôle 12. Les chambres 19 disposées de part et d'autre de l'unité de contrôle 12 présentent chacune, en vue en coupe, leurs quatre coins afin que la poutre structurante 15 conserve une rigidité suffisante lui permettant de supporter les efforts de choc et de torsion requis en cas d'accident. In the example shown in Figures 4a and 4b, the hollow body 17 has seven chambers 19. As a variant, the hollow body 17 may of course include a different number of chambers 19. The hollow body 17 has four horizontal walls 21 .1, 21 .2, 21 .3, 21 .4. The two upper walls 21 .1 and 21 .2 are machined locally, so that the control unit 12 is placed inside a housing 16 formed by two chambers 19 of the structural beam 15, as can be seen. see in Figures 4b and 5. The openings of the two walls 21 .1, 21 .2 are made in vertical coincidence, that is to say that the edges of the opening made in the wall 21 .1 coincide with the edges of the opening made in the wall 21 .2. The number of rooms 19 necessary for receiving the control unit 12 can of course be adapted according to the size of the control unit 12 and the size of the rooms 19. Preferably, two closed-volume chambers 19 are arranged on either side of the control unit 12. The chambers 19 arranged on either side of the control unit 12 each have, in view in section, their four corners so that the structural beam 15 retains sufficient rigidity enabling it to withstand the shock and torsional forces required in the event of an accident.

[0038] Comme cela est illustré par la figure 5, une unité de contrôle 12 est maintenue à l’intérieur du logement 16 au moyen d’un dispositif de fixation 22 qui prend avantageusement la forme d’un dispositif d’encliquetage. A cet effet, le dispositif d'encliquetage 22 comporte des ailettes 24 élastiquement déformables munies chacune d'une portion destinée à venir en appui contre un bord d'une paroi horizontale de la poutre structurante 15 lorsque l'unité de contrôle 12 est disposée à l'intérieur de son logement 16. As illustrated in Figure 5, a control unit 12 is held inside the housing 16 by means of a fixing device 22 which advantageously takes the form of a ratchet device. To this end, the latching device 22 comprises elastically deformable fins 24 each provided with a portion intended to bear against an edge of a horizontal wall of the structuring beam 15 when the control unit 12 is arranged at inside its housing 16.

[0039] Comme cela est visible sur les figures 4b et 5, les connecteurs 14.1 , 14.2 de l’unité de contrôle 12 destinés à être reliés chacun à un faisceau électrique 26 sont disposés en vis-à-vis de l'ouverture. As can be seen in Figures 4b and 5, the connectors 14.1, 14.2 of the control unit 12 each intended to be connected to an electrical harness 26 are arranged vis-à-vis the opening.

[0040] Avantageusement, une poutre structurante 15 comporte au moins une entretoise de fixation 25 traversante pour le passage d'un organe de fixation, tel qu'une vis, permettant de fixer la poutre structurante 15 sur un élément structurel du véhicule automobile. La poutre structurante 15 est avantageusement fixée sur une traverse de fixation de sièges du véhicule automobile. Une telle configuration permet de rigidifier la traverse de fixation des sièges. Advantageously, a structuring beam 15 comprises at least one through fixing spacer 25 for the passage of a fastening member, such as a screw, making it possible to fix the structuring beam 15 on a structural element of the motor vehicle. The structuring beam 15 is advantageously fixed to a cross member for fixing the seats of the motor vehicle. Such a configuration makes it possible to stiffen the cross member for fixing the seats.

[0041 ] L’invention permet ainsi de limiter l’encombrement de l'unité de contrôle 12 afin d’améliorer un rendement volumique de la batterie. En outre, des parois de la poutre structurante 15 permettent de protéger l'unité de contrôle 12 des chocs externes. L’invention permet également de faciliter le montage des unités de contrôle 12 qui sont aisément accessibles pour leur raccordement à un faisceau électrique du véhicule automobile. [0041] The invention thus makes it possible to limit the size of the control unit 12 in order to improve the volume efficiency of the battery. In addition, the walls of the structural beam 15 make it possible to protect the control unit 12 from external shocks. The invention also makes it possible to facilitate the mounting of the control units 12 which are easily accessible for their connection to an electrical harness of the motor vehicle.

[0042] L'invention a également pour objet un véhicule automobile comportant une batterie 10 telle que précédemment définie. [0042] The subject of the invention is also a motor vehicle comprising a battery 10 as defined above.

Claims

REVENDICATIONS 1 . Batterie (10) comportant: 1. Battery (10) comprising: - une pluralité de modules de stockage (1 1 ) d’énergie électrique, - a plurality of storage modules (1 1) of electrical energy, - au moins une unité de contrôle (12) apte à transmettre des informations relatives à un état de fonctionnement d'au moins un module de stockage (1 1 ) d’énergie électrique, et - at least one control unit (12) capable of transmitting information relating to an operating state of at least one storage module (1 1) of electrical energy, and - au moins une poutre structurante (15), - at least one structural beam (15), caractérisée en ce que l’unité de contrôle (12) est disposée à l’intérieur d’un logement (16) ménagé dans la poutre structurante (1 5). characterized in that the control unit (12) is arranged inside a housing (16) provided in the structural beam (1 5). 2. Batterie selon la revendication 1 , caractérisée en ce que la poutre structurante (15) comporte un corps creux (17) multi-chambres. 2. Battery according to claim 1, characterized in that the structuring beam (15) comprises a hollow body (17) multi-chambers. 3. Batterie selon la revendication 2, caractérisée en ce que le logement (16) de l’unité de contrôle (12) comporte au moins une chambre (19) du corps creux (17) de la poutre structurante (15), la chambre (19) comportant une ouverture agencée de sorte à permettre une insertion de l'unité de contrôle (12) à l'intérieur de ladite chambre, ainsi que son retrait. 3. Battery according to claim 2, characterized in that the housing (16) of the control unit (12) comprises at least one chamber (19) of the hollow body (17) of the structural beam (15), the chamber (19) comprising an opening arranged so as to allow insertion of the control unit (12) inside said chamber, as well as its removal. 4. Batterie selon la revendication 2 ou 3, caractérisée en ce que deux chambres (19) à volume fermé sont disposées de part et d'autre de l'unité de contrôle (12). 4. Battery according to claim 2 or 3, characterized in that two chambers (19) with closed volume are arranged on either side of the control unit (12). 5. Batterie selon la revendication 3, caractérisée en ce qu'au moins un connecteur (14.1 , 14.2) de l’unité de contrôle (12) destiné à être relié à un faisceau électrique est disposé en vis-à-vis de l’ouverture. 5. Battery according to claim 3, characterized in that at least one connector (14.1, 14.2) of the control unit (12) intended to be connected to an electrical harness is arranged vis-à-vis the opening. 6. Batterie selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l’unité de contrôle (12) est maintenue à l’intérieur du logement (16) au moyen d’un dispositif de fixation (22). 6. Battery according to any one of claims 1 to 5, characterized in that the control unit (12) is held inside the housing (16) by means of a fixing device (22). 7. Batterie selon la revendication 6, caractérisée en ce que le dispositif de fixation (22) est un dispositif de fixation par encliquetage. 7. Battery according to claim 6, characterized in that the fixing device (22) is a snap-fastening device. 8. Batterie selon l’une quelconque des revendications 1 à 7, caractérisée en ce que la poutre structurante (15) comporte une entretoise de fixation (25) traversante pour le passage d'un organe de fixation permettant de fixer la poutre structurante (15) sur un élément structurel d’un véhicule automobile. 8. Battery according to any one of claims 1 to 7, characterized in that the structuring beam (15) comprises a fastening spacer (25) passing through for the passage of a fastening member for fixing the structuring beam (15). ) on a structural element of a motor vehicle. 9. Véhicule automobile caractérisé en ce qu'il comporte une batterie (10) telle que définie selon l’une quelconque des revendications précédentes. 9. Motor vehicle characterized in that it comprises a battery (10) as defined in any one of the preceding claims. 10. Véhicule automobile selon la revendication 9, caractérisé en ce que la poutre structurante (15) est fixée sur une traverse de fixation de sièges du véhicule automobile. 10. Motor vehicle according to claim 9, characterized in that the structuring beam (15) is fixed to a cross member for fixing the seats of the motor vehicle.
EP20725862.5A 2019-04-23 2020-03-10 Battery with control unit integrated in a structural beam Pending EP3959099A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1904259A FR3095379B1 (en) 2019-04-23 2019-04-23 BATTERY WITH CONTROL UNIT INTEGRATED IN A STRUCTURAL BEAM
PCT/FR2020/050481 WO2020217014A1 (en) 2019-04-23 2020-03-10 Battery with control unit integrated in a structural beam

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DE102022104569B4 (en) 2022-02-25 2025-02-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft traction battery vehicle floor

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DE102013106141B4 (en) * 2013-06-13 2024-05-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Bearing frame for an electrically powered motor vehicle
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FR3095379B1 (en) 2022-01-14
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CN113767027A (en) 2021-12-07

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