WO2012123596A1 - Battery store for an electric vehicle - Google Patents

Battery store for an electric vehicle Download PDF

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Publication number
WO2012123596A1
WO2012123596A1 PCT/ES2011/070180 ES2011070180W WO2012123596A1 WO 2012123596 A1 WO2012123596 A1 WO 2012123596A1 ES 2011070180 W ES2011070180 W ES 2011070180W WO 2012123596 A1 WO2012123596 A1 WO 2012123596A1
Authority
WO
WIPO (PCT)
Prior art keywords
upper cover
battery
mesh
support
electric vehicle
Prior art date
Application number
PCT/ES2011/070180
Other languages
Spanish (es)
French (fr)
Inventor
Ekaitz ISPIZUA CELADA
Andoni FERNANDEZ URIEN
Original Assignee
Autotech Engineering, A.I.E.
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 Autotech Engineering, A.I.E. filed Critical Autotech Engineering, A.I.E.
Priority to PCT/ES2011/070180 priority Critical patent/WO2012123596A1/en
Publication of WO2012123596A1 publication Critical patent/WO2012123596A1/en

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/278—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/276—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/28—Composite material consisting of a mixture of organic and inorganic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a tank for containing and supporting modules of electric energy storage batteries on board an electric vehicle, driven by the electric power supplied by the batteries.
  • Battery tanks for electric vehicles must meet requirements that distinguish: tightness, impact resistance, mechanical resistance and electrical conductivity.
  • the electrical conductivity of the material of the tank has the function of providing a Faraday cage effect, so that it can cancel the electromagnetic field of the batteries and protect the users of the vehicle from interference.
  • the mechanical resistance includes the resistance of the tank to static loads due to the weight and the inertia forces acting during the movement of the vehicle.
  • the structural resistance requirement is a relatively demanding requirement, taking into account that the weight of the battery modules to be supported is approximately 400 Kg.
  • Conventional battery tanks for electric vehicles consist of a lower support structure or box, usually made of steel, dimensionally and structurally consistent with the weight to be supported and with appropriate means to fix it to the vehicle chassis.
  • the tanks include an upper cover or cover, also made of steel, formally and dimensionally complementary to the lower support box.
  • the fastening to the chassis of the vehicle is normally made to two longitudinal stringers of the chassis.
  • the support structure once the battery modules resting on it are located, is closed with the top cover by screwing and then the whole assembly is also screwed to the two longitudinal stringers of the vehicle chassis.
  • the steel material used both in the upper cover and in the different elements that comprise the support structure (such as crossbars) although it provides the necessary strength to ensure the mechanical strength as well as the electrical conductivity required, has the disadvantage of Its high weight and cost.
  • the present invention seeks to provide a battery tank of reduced weight and cost that allows to overcome the aforementioned disadvantages of battery deposits known in the state of the art.
  • the proposed invention provides the technical characteristics and effects described below.
  • the battery reservoir of the invention comprises a support structure for battery modules, said support structure is coupled to the vehicle chassis by conventional fixing means such as by screwing.
  • the tank is complemented by an upper cover coupled to the support structure and which contributes to provide the required insulation for the battery modules, enclosing them.
  • the required insulation includes tank tightness and impact protection.
  • the tank of the invention is characterized in that the upper cover comprises: a main cover body superior, which is made of plastic material; and a conductive mesh of upper cover.
  • conductive mesh is meant herein a mesh of electrical conductive material. In this way, the upper cover conductive mesh provides a Faraday cage effect, counteracting the electromagnetic field generated by the battery modules in the tank, in cooperation with the support structure.
  • the support structure is conventionally metallic, usually made of steel, providing the electrical conductivity necessary to produce the Faraday effect as well as the mechanical resistance required to support the weight of the battery modules.
  • the replacement of the conventional upper cover, which is also usually made of steel, by an upper cover as described in the present invention, allows on the one hand to lighten the weight of the upper cover and hence of the tank and the vehicle, as well as provide a cover of reduced cost in relation to conventional steel covers.
  • the conductive mesh is preferably metallic, such as steel (e.g. galvanized or stainless), titanium, copper, brass and aluminum.
  • steel e.g. galvanized or stainless
  • the mesh of the invention can be obtained from any other conductive material, such as conductive plastic (e.g. polyacetylene, polypyrrole, polythiophene or polyaniline).
  • conductive plastic e.g. polyacetylene, polypyrrole, polythiophene or polyaniline.
  • the mesh can be constituted by a single mesh portion or by a plurality of mesh portions that are joined together to form the mesh of the roof.
  • the conductive mesh can be formed by wires or wires of conductive material, for example woven or welded together.
  • the main upper cover body it is contemplated that it may be of any plastic material, including thermoplastics, thermosets, conductive plastics and fiber reinforced plastics.
  • the fibers of the reinforced plastics used in the main body can be of conductive material, such as metal. Both the use of conductive plastics and fiber reinforced plastics Conductive material allows to provide an improvement of the Faraday effect of the invention.
  • the invention contemplates that the conductive mesh and the main upper cover body can be mounted in the tank connected to each other or separated; preferably they connect and join together.
  • the mesh and the main body can be joined by any known joining process, depending on the materials of the mesh and the main body.
  • the upper cover may have any shape deemed appropriate, for example prismatic, with no limitation for the invention.
  • the following processes can be used to join the conductive mesh and the main body: mesh mesh embedded in the main body, mesh mesh overlapping the main body, mesh mesh mechanically fixed to the main body.
  • process is understood as “mesh embedded in the main body” to any manufacturing process whereby the conductive mesh is inserted inside the main body.
  • a “mesh overlapping the main body” process is understood as any manufacturing process whereby the conductive mesh is superficially adhered to one of the faces (inside or outside) of the main body.
  • mechanically fixed mesh to the main body means any mechanical fixing process such as: by tightening (eg screwed, robbed or riveted, with flange, stapled), by retention (eg with retaining tabs), under pressure (eg embedded), etc.
  • the union between the mesh and the main body is carried out once the mesh and the main body have been formed separately, the union being carried out later, while in the second variant the union is made simultaneously to the forming process of both of them.
  • thermoplastic thermoplastic
  • the mesh can overlap both the inner face of the main body and the external face
  • bonding, co-bonding, co-curing and welding are considered: bonding, co-bonding, co-curing and welding.
  • bonding is meant the bonding by means of adhesive applied between the mesh and the main body once both have been shaped.
  • shaped part main body, conductive mesh or cover
  • the main body is made of thermosetting material
  • shaped main body means that the main body not only has the final shape but also the material has been completely cured and processed.
  • co-curing is meant the union between the mesh (shaped or non-shaped) and main body (non-shaped) without adhesive.
  • the union occurs when the main body is cured in contact with the conductive mesh.
  • welding means the process of joining by heating and applying pressure between the mesh and the main body (made of thermoplastic material).
  • the thickness of the main body can be any, although it can be conditioned by the joining process (for example by the injectability of the plastic in the closed mold) or also by resistance of the same to support the weight of the roof itself.
  • the conductive mesh can provide the additional utility of stiffening the cover.
  • the support structure may comprise: a support frame for battery modules, which is coupled to the vehicle chassis, and a lower cover.
  • the bottom cover provides insulation to the battery modules in cooperation with the top cover.
  • the lower cover may comprise a main body of plastic material and a conductive mesh analogously to the upper cover, such that the lower cover conductive mesh provides a cage effect from Faraday, counteracting the electromagnetic field generated by the battery modules in the tank, in cooperation with the conductive mesh of the upper deck.
  • the upper cover conductive mesh and the lower cover conductive mesh are arranged by enclosing the battery modules inside.
  • the support frame of the invention can be of any material with the robustness necessary to support the entire weight of the tank, preferably metal, for example steel or duralumin.
  • the conventional support structures are usually made of steel material, so that, with the characteristics of the present invention, it is possible to significantly lighten the weight of the structure as well as reduce the cost thereof in addition.
  • the support frame is in the form of a frame, which makes it possible to lighten its weight further. It is contemplated that the frame-shaped support frame incorporates an inner perimeter reinforcement projection for fixing the lower cover and other elements of the tank as will be described later.
  • the shape of the support frame can be any, and may include, for example, reinforcement elements such as hardware, diagonals, etc.
  • the invention contemplates the incorporation of a honeycomb support panel.
  • the support panel can be obtained from any material, preferably light, such as plastic or aluminum.
  • the panel can be arranged supported on the support frame, particularly in an embodiment of the frame-shaped frame the panel can be arranged supported on the reinforcement projections. It is also contemplated that the tank incorporates more than one honeycomb panel, stacked one on top of the other, butt side by side, etc.
  • the support panel made of aluminum or an electrically conductive material provides the additional advantage of improving the Faraday effect.
  • care must be taken to avoid incompatibilities due to oxidation-reduction between them. Therefore, in particular it is preferable to use the same metallic material at least for the conductive mesh than for the metal support panel.
  • the support structure comprises support cross members that can be supported by their ends in the support frame, being fixed thereto.
  • the battery modules are preferably connected and fixed to the support crossbars, distributing the weight load of the modules to the rest of the structure.
  • the crossbars can be flex-resistant profiles, or be replaced by sheets, plates or strapping only with the function of serving as a fixation to the battery modules. The latter case is contemplated when the crossbars are used together with support panels.
  • the materials to be used for the crossbars there is no limitation; preferably they are metallic, for example of steel or duralumin, taking the precaution of oxidation-reduction compatibility with respect to the other elements of the tank.
  • the lower cover and the support panel are arranged supported on the support frame and fixed thereto through reinforcement projections of the frame.
  • the support panel can be located both inside the bottom cover and outside.
  • the support structure comprises a frame-shaped support frame and includes reinforcement projections for fixing the rest of the elements.
  • the lower cover of the invention is placed on the support frame and in contact with the lower cover, above or below it, a support panel is arranged. Finally, inside the cover are the support crossbars to which the battery modules are secured in a conventional manner.
  • the lower and upper covers may include respective flanges for fixing to each other.
  • the fixing between the lower and upper cover can be carried out by conventional fixing means such as tightening (e.g. bolted, bolted or riveted, with flange), by retention (e.g. with retaining tabs), under pressure (e.g. embedded), etc.
  • the fixing between the support cross members, the lower cover, the support panel and the support frame can be carried out jointly, preferably removably, for example by means of mechanical fixing by means of through bolting.
  • different elements can be fixed separately.
  • the support panel can be fixed to the lower cover independently by conventional fixing means such as adhesive fixing, by tightening (eg screwed, robbed or riveted, with flange), by retention (eg with retaining tabs ), under pressure (eg embedded), etc.
  • the crossbars can be fixed to the support frame independently by conventional fixing means such as bolted tightening or welding.
  • the crossbars are integrated into the structure of the support frame.
  • the invention can incorporate sealing gaskets in the joint between the upper cover and the lower cover as well as in the holes of the tank corresponding to the fixing means, etc.
  • the present invention provides a battery tank for electric vehicles of reduced weight and cost.
  • the invention offers improvements over the state of the art known as described above. All this therefore solving the technical problem raised.
  • Figure 1 is an exploded perspective view of the coupling between the battery reservoir of the embodiment and the chassis of an electric vehicle.
  • Figure 2 shows an exploded perspective view of the battery reservoir of the embodiment.
  • Figure 3 shows a perspective view of the upper and lower cover with the surface mesh overlapping.
  • the tank (2) comprises: an upper cover (5); and a support structure (4), fixed to the stringers of the chassis (1) by means (8) of screw fixing.
  • the support structure (4) is screwed by four anchor points on each stringer.
  • the tank (2) of the embodiment of the invention exploded in three parts arranged according to the position they occupy once mounted on the tank (2) is shown, from bottom to top: the support frame (9) ; the lower cover (10) with the support panel (1 1), the support crossbars (12) and the battery modules (3) housed therein; and the upper cover (5).
  • the support cross members (4), the support panel (1 1) and the lower cover (10) are connected to the support frame (9) by screwing, such as through screws.
  • the battery modules (3) are also fixed to the support crossbars by screwing.
  • the upper cover (5) closes the entire assembly by fixing to the lower cover (10); the fixing between the upper cover (5) and the lower cover (10) is likewise done by screwing along the flanges (13,14) of the upper and lower cover.
  • Figure 3 shows a perspective view of the upper cover (5) in which the arrangement of the conductive mesh (7) overlapped on the inner surface to the main body (6) of the cover (5) can be seen.
  • the type of conductive mesh (7) chosen in the embodiment is illustrated in detail.
  • the material selected for the mesh (7) of the cover (5) of the embodiment is preferably metallic, the metal mesh can overlap the inner side of covered paths simply fitted into the main body (6) of the cover (5), once the mesh (7) and the main body (6) have been formed separately.
  • the metal mesh can be formed by drawing starting from a flat mesh.
  • the main body can be shaped by injection of thermoplastic into a closed mold.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention relates to a store (2) for containing and supporting battery modules (3) for an electric vehicle. The store (2) includes a supporting structure (4) which is coupled to the chassis (1) of the vehicle and an upper cover (5) which is mounted on the supporting structure (4), providing the store (2) with insulation. The upper cover (5) of the invention comprises a main body (6) made of plastic material and a mesh (7) made of conductive material.

Description

DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO D E S C R I P C I Ó N OBJETO Y CAMPO TÉCNICO DE LA INVENCIÓN  BATTERY DEPOSIT FOR ELECTRICAL VEHICLE D E S C R I P C I O OBJECT AND TECHNICAL FIELD OF THE INVENTION
La presente invención se refiere a un depósito para contener y soportar módulos de baterías de almacenamiento de energía eléctrica a bordo de un vehículo eléctrico, impulsado por la energía eléctrica suministrada por las baterías. The present invention relates to a tank for containing and supporting modules of electric energy storage batteries on board an electric vehicle, driven by the electric power supplied by the batteries.
El concepto de "vehículo eléctrico" incluye en la presente memoria el concepto de "vehículo híbrido".  The concept of "electric vehicle" includes the concept of "hybrid vehicle" herein.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Los depósitos de baterías para vehículos eléctricos deben cumplir requerimientos entre los que se distinguen: estanqueidad, resistencia a impactos, resistencia mecánica y conductividad eléctrica. Battery tanks for electric vehicles must meet requirements that distinguish: tightness, impact resistance, mechanical resistance and electrical conductivity.
La conductividad eléctrica del material del depósito tiene la función de proporcionar un efecto de jaula de Faraday, de manera que permita anular el campo electromagnético de las baterías y proteger de interferencias a los usuarios del vehículo.  The electrical conductivity of the material of the tank has the function of providing a Faraday cage effect, so that it can cancel the electromagnetic field of the batteries and protect the users of the vehicle from interference.
La resistencia mecánica incluye la resistencia del depósito a cargas estáticas debidas al peso y las fuerzas de inercia que actúan durante el movimiento del vehículo. El requerimiento de resistencia estructural es un requerimiento relativamente exigente, teniendo en cuenta que el peso de los módulos de baterías a soportar es de aproximadamente 400 Kg.  The mechanical resistance includes the resistance of the tank to static loads due to the weight and the inertia forces acting during the movement of the vehicle. The structural resistance requirement is a relatively demanding requirement, taking into account that the weight of the battery modules to be supported is approximately 400 Kg.
Los depósitos de baterías convencionales para vehículos eléctricos están constituidos por una estructura o caja de soporte inferior, normalmente de acero, dimensional y estructuralmente acorde con el peso que ha de soportar y con medios apropiados para fijarla al chasis del vehículo. Los depósitos incluyen una cubierta o tapa superior, también de acero, formal y dimensionalmente complementaria de la caja de soporte inferior. La fijación al chasis del vehículo se realiza normalmente a dos largueros longitudinales del chasis. Algunos ejemplos de depósitos de baterías convencionales para vehículos eléctricos pueden encontrarse en las referencias EP-1939026, US-2007/0141451 , US-2008/0173488 y US- 2009/0236162. Conventional battery tanks for electric vehicles consist of a lower support structure or box, usually made of steel, dimensionally and structurally consistent with the weight to be supported and with appropriate means to fix it to the vehicle chassis. The tanks include an upper cover or cover, also made of steel, formally and dimensionally complementary to the lower support box. The fastening to the chassis of the vehicle is normally made to two longitudinal stringers of the chassis. Some examples of conventional battery tanks for electric vehicles can be found in references EP-1939026, US-2007/0141451, US-2008/0173488 and US- 2009/0236162.
La estructura de soporte, una vez situados los módulos de baterías apoyados en la misma, se cierra con la cubierta superior mediante atornillado y posteriormente todo el conjunto se atornilla también a los dos largueros longitudinales del chasis del vehículo.  The support structure, once the battery modules resting on it are located, is closed with the top cover by screwing and then the whole assembly is also screwed to the two longitudinal stringers of the vehicle chassis.
El material de acero, empleado tanto en la cubierta superior como en los distintos elementos que comprenden la estructura de soporte (como por ejemplo travesaños) aunque permite proporcionar la robustez necesaria para asegurar la resistencia mecánica así como la conductividad eléctrica requeridas, presenta el inconveniente de su elevado peso y coste.  The steel material, used both in the upper cover and in the different elements that comprise the support structure (such as crossbars) although it provides the necessary strength to ensure the mechanical strength as well as the electrical conductivity required, has the disadvantage of Its high weight and cost.
La utilización de otros materiales metálicos más ligeros en lugar de acero, como por ejemplo duraluminio o titanio, sólo resuelve parcialmente el problema, pues normalmente lleva aparejado un incremento significativo en el coste. También pueden considerarse otros criterios de selección de material como por ejemplo el mayor mantenimiento requerido para el acero que para el duraluminio, que influye en la fiabilidad y coste del depósito en último término.  The use of other lighter metal materials instead of steel, such as duralumin or titanium, only partially solves the problem, since it usually entails a significant increase in cost. Other material selection criteria can also be considered, such as the higher maintenance required for steel than for duralumin, which influences the reliability and cost of the deposit in the end.
La presente invención trata de proporcionar un depósito de baterías de reducido peso y coste que permite superar los inconvenientes mencionados de los depósitos de baterías conocidos en el estado de la técnica.  The present invention seeks to provide a battery tank of reduced weight and cost that allows to overcome the aforementioned disadvantages of battery deposits known in the state of the art.
DESCRIPCION DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
Con objeto de resolver el problema técnico señalado y lograr mejoras con respecto al estado de la técnica anterior, la invención propuesta proporciona las características y efectos técnicos que se describen a continuación. In order to solve the indicated technical problem and achieve improvements with respect to the prior art, the proposed invention provides the technical characteristics and effects described below.
El depósito de baterías de la invención comprende una estructura de soporte para módulos de baterías, dicha estructura de soporte se acopla al chasis del vehículo por medios de fijación convencionales como por ejemplo por atornillado. El depósito se complementa con una cubierta superior acoplada a la estructura de soporte y que contribuye a proporcionar el aislamiento requerido para los módulos de baterías, encerrando los mismos. El aislamiento requerido incluye estanqueidad del depósito y la protección frente a impactos. El depósito de la invención se caracteriza por que la cubierta superior comprende: un cuerpo principal de cubierta superior, que es de material plástico; y una malla conductora de cubierta superior. Por malla conductora se entiende en la presente memoria a una malla de material conductor eléctrico. De este modo, la malla conductora de cubierta superior proporciona un efecto de jaula de Faraday, contrarrestando el campo electromagnético generado por los módulos de baterías en el depósito, en cooperación con la estructura de soporte. La estructura de soporte convencionalmente es metálica, normalmente de acero, proporcionando la conductividad eléctrica necesaria para producir el efecto de Faraday así como la resistencia mecánica requerida para soportar el peso de los módulos de baterías. La sustitución de la cubierta superior convencional, que también es normalmente de acero, por una cubierta superior como se describe en la presente invención, permite por un lado aligerar el peso de la cubierta superior y por ende del depósito y del vehículo, así como proporcionar una cubierta de reducido coste en relación con las cubiertas convencionales de acero. The battery reservoir of the invention comprises a support structure for battery modules, said support structure is coupled to the vehicle chassis by conventional fixing means such as by screwing. The tank is complemented by an upper cover coupled to the support structure and which contributes to provide the required insulation for the battery modules, enclosing them. The required insulation includes tank tightness and impact protection. The tank of the invention is characterized in that the upper cover comprises: a main cover body superior, which is made of plastic material; and a conductive mesh of upper cover. By "conductive mesh" is meant herein a mesh of electrical conductive material. In this way, the upper cover conductive mesh provides a Faraday cage effect, counteracting the electromagnetic field generated by the battery modules in the tank, in cooperation with the support structure. The support structure is conventionally metallic, usually made of steel, providing the electrical conductivity necessary to produce the Faraday effect as well as the mechanical resistance required to support the weight of the battery modules. The replacement of the conventional upper cover, which is also usually made of steel, by an upper cover as described in the present invention, allows on the one hand to lighten the weight of the upper cover and hence of the tank and the vehicle, as well as provide a cover of reduced cost in relation to conventional steel covers.
El concepto de "malla" incluye en la presente invención los conceptos de "bobinado", "rejilla", "tela" y "lámina perforada". Asimismo dentro el concepto de "lámina" cabe entender que incluye los conceptos de "placa" y "chapa". Si la malla es metálica, el concepto de "malla metálica" también incluye el concepto de "metal desplegado", también denominado "metal expandido" o "deployé".  The concept of "mesh" includes in the present invention the concepts of "winding", "grid", "fabric" and "perforated sheet". Also within the concept of "sheet" it is understood that includes the concepts of "plate" and "sheet". If the mesh is metallic, the concept of "metal mesh" also includes the concept of "unfolded metal", also called "expanded metal" or "deployed."
La malla conductora es preferentemente metálica, como por ejemplo de acero (e.g. galvanizado o inoxidable), titanio, cobre, latón y aluminio. Sin embargo, no existe limitación para que la malla de la invención pueda obtenerse a partir de cualquier otro material conductor, como por ejemplo plástico conductor (e.g. poliacetileno, polipirrol, politiofeno o polianilina). También se contempla el caso de que la malla puede constituirse por una sola porción de malla o por una pluralidad de porciones de malla que se unen entre sí para conformar la malla de la cubierta.  The conductive mesh is preferably metallic, such as steel (e.g. galvanized or stainless), titanium, copper, brass and aluminum. However, there is no limitation so that the mesh of the invention can be obtained from any other conductive material, such as conductive plastic (e.g. polyacetylene, polypyrrole, polythiophene or polyaniline). The case is also contemplated that the mesh can be constituted by a single mesh portion or by a plurality of mesh portions that are joined together to form the mesh of the roof.
La malla conductora puede estar formada por hilos o alambres de material conductor, por ejemplo tejidos o soldados entre sí.  The conductive mesh can be formed by wires or wires of conductive material, for example woven or welded together.
Por otra parte, en relación con el cuerpo principal de cubierta superior, se contempla que éste pueda ser de cualquier material plástico, incluyendo termoplásticos, termoestables, plásticos conductores y plásticos reforzados con fibras. En particular, las fibras de los plásticos reforzados empleados en el cuerpo principal pueden ser de material conductor, como por ejemplo de metal. Tanto la utilización de plásticos conductores como de plásticos reforzados con fibras de material conductor permite proporcionar una mejora del efecto Faraday de la invención. On the other hand, in relation to the main upper cover body, it is contemplated that it may be of any plastic material, including thermoplastics, thermosets, conductive plastics and fiber reinforced plastics. In particular, the fibers of the reinforced plastics used in the main body can be of conductive material, such as metal. Both the use of conductive plastics and fiber reinforced plastics Conductive material allows to provide an improvement of the Faraday effect of the invention.
La invención contempla que la malla conductora y el cuerpo principal de cubierta superior puedan montarse en el depósito conectados entre sí o separados; preferentemente se conectan y unen entre sí. La malla y el cuerpo principal pueden unirse por cualquier proceso conocido de unión, en función de los materiales de la malla y del cuerpo principal.  The invention contemplates that the conductive mesh and the main upper cover body can be mounted in the tank connected to each other or separated; preferably they connect and join together. The mesh and the main body can be joined by any known joining process, depending on the materials of the mesh and the main body.
Por otra parte, la cubierta superior puede tener cualquier forma que se considere apropiada, por ejemplo prismática, no existiendo limitación para la invención.  On the other hand, the upper cover may have any shape deemed appropriate, for example prismatic, with no limitation for the invention.
Para unir la malla conductora y el cuerpo principal pueden emplearse los siguientes procesos: unión por malla embebida en el cuerpo principal, unión por malla solapada al cuerpo principal, unión por malla fijada mecánicamente al cuerpo principal.  The following processes can be used to join the conductive mesh and the main body: mesh mesh embedded in the main body, mesh mesh overlapping the main body, mesh mesh mechanically fixed to the main body.
En la presente memoria se entiende por proceso "por malla embebida en el cuerpo principal" a cualquier proceso de fabricación por el que la malla conductora queda insertada en el interior del cuerpo principal. Se entiende por proceso "por malla solapada al cuerpo principal" a cualquier proceso de fabricación por el que la malla conductora queda adherida superficialmente a una de las caras (interior o exterior) del cuerpo principal. Finalmente por proceso "por malla fijada mecánicamente al cuerpo principal" se entiende cualquier proceso de fijación mecánica como por ejemplo: por apriete (e.g. atornillada, roblonada o remachada, con brida, grapada), por retención (e.g. con lengüetas retenedoras), a presión (e.g. encajada), etc.  In this report, the process is understood as "mesh embedded in the main body" to any manufacturing process whereby the conductive mesh is inserted inside the main body. A "mesh overlapping the main body" process is understood as any manufacturing process whereby the conductive mesh is superficially adhered to one of the faces (inside or outside) of the main body. Finally, by process "by mechanically fixed mesh to the main body" means any mechanical fixing process such as: by tightening (eg screwed, robbed or riveted, with flange, stapled), by retention (eg with retaining tabs), under pressure (eg embedded), etc.
Dentro de los procesos mencionados y dependiendo del caso, pueden darse las siguientes variantes. En una primera variante la unión entre la malla y el cuerpo principal se realiza una vez que la malla y el cuerpo principal se han conformado por separado efectuándose la unión posteriormente, mientras que en la segunda variante la unión se realiza simultáneamente al proceso de conformado de ambos.  Within the mentioned processes and depending on the case, the following variants may occur. In a first variant the union between the mesh and the main body is carried out once the mesh and the main body have been formed separately, the union being carried out later, while in the second variant the union is made simultaneously to the forming process of both of them.
Obviamente, los procesos de fabricación dependen del tipo de material, principalmente si el material plástico es termoplástico o termoestable.  Obviously, manufacturing processes depend on the type of material, mainly if the plastic material is thermoplastic or thermoset.
Con respecto a los procesos "por malla solapada al cuerpo principal", la malla puede solaparse tanto por la cara interna del cuerpo principal como por la cara externa. Dentro de esta familia de procesos se consideran por ejemplo los siguientes: pegado, copegado, cocurado y soldadura. With respect to the processes "by mesh overlapping the main body", the mesh can overlap both the inner face of the main body and the external face Within this family of processes, for example, the following are considered: bonding, co-bonding, co-curing and welding.
Por "pegado" se entiende la unión por medio de adhesivo aplicado entre la malla y el cuerpo principal una vez que ambos se han conformado. En este sentido, cabe precisar que en la presente memoria se entiende por "pieza conformada" (cuerpo principal, malla conductora o cubierta) a la pieza con la forma y características físicas preparada para su montaje en el depósito. Por ejemplo si el cuerpo principal es de material termoestable, por cuerpo principal conformado se entiende que el cuerpo principal no sólo tiene la forma final sino además el material se ha curado y procesado completamente.  By "bonding" is meant the bonding by means of adhesive applied between the mesh and the main body once both have been shaped. In this sense, it is necessary to specify that in this report it is understood as a "shaped part" (main body, conductive mesh or cover) to the piece with the form and physical characteristics prepared for its assembly in the tank. For example, if the main body is made of thermosetting material, shaped main body means that the main body not only has the final shape but also the material has been completely cured and processed.
Por "copegado" se entiende la unión entre la malla (conformada o no conformada) y el cuerpo principal (no conformado) con adhesivo, conformándose la cubierta mientras se aplica el adhesivo, es decir por ejemplo produciéndose el curado del adhesivo y del cuerpo principal de material termoestable al mismo tiempo hasta conformar la cubierta, quedando la malla adherida al cuerpo principal.  By "copegado" is meant the union between the mesh (shaped or not formed) and the main body (not formed) with adhesive, the cover being formed while the adhesive is applied, that is, for example, the curing of the adhesive and the main body of thermosetting material at the same time until the cover is formed, the mesh being attached to the main body.
Por "cocurado" se entiende la unión entre la malla (conformada o no conformada) y cuerpo principal (no conformado) sin adhesivo. Por ejemplo, cuando se aplica al cuerpo principal de material termoestable la unión se produce cuando se efectúa el curado del cuerpo principal en contacto con la malla conductora.  By "co-curing" is meant the union between the mesh (shaped or non-shaped) and main body (non-shaped) without adhesive. For example, when it is applied to the main body of thermosetting material, the union occurs when the main body is cured in contact with the conductive mesh.
Finalmente, por "soldadura" se entiende el proceso de unión por calentamiento y aplicación de presión entre la malla y el cuerpo principal (de material termoplástico).  Finally, "welding" means the process of joining by heating and applying pressure between the mesh and the main body (made of thermoplastic material).
El espesor del cuerpo principal puede ser cualquiera, si bien puede estar condicionado por el proceso de unión (por ejemplo por la inyectabilidad del plástico en el molde cerrado) o también por resistencia de la misma para soportar el propio peso de la cubierta. En este sentido, la malla conductora puede proporcionar la utilidad adicional de rigidizar la cubierta.  The thickness of the main body can be any, although it can be conditioned by the joining process (for example by the injectability of the plastic in the closed mold) or also by resistance of the same to support the weight of the roof itself. In this sense, the conductive mesh can provide the additional utility of stiffening the cover.
Otro aspecto de la invención es que la estructura de soporte puede comprender: un bastidor de soporte para módulos de baterías, que se acopla al chasis del vehículo, y una cubierta inferior. La cubierta inferior proporciona aislamiento a los módulos de baterías en cooperación con la cubierta superior. Opcionalmente, la cubierta inferior puede comprender un cuerpo principal de material plástico y una malla conductora análogamente a la cubierta superior, de manera que la malla conductora de cubierta inferior proporcione un efecto de jaula de Faraday, contrarrestando el campo electromagnético generado por los módulos de baterías en el depósito, en cooperación con la malla conductora de cubierta superior. Para ello, la malla conductora de cubierta superior y la malla conductora de cubierta inferior se disponen encerrando los módulos de baterías en su interior. El bastidor de soporte de la invención puede ser de cualquier material con la robustez necesaria para soportar todo el peso del depósito, preferentemente es metálico, por ejemplo de acero o duraluminio. Como se ha indicado anteriormente, las estructuras de soporte convencionales son normalmente de material de acero, por lo que, con las características de la presente invención, se consigue aligerar significativamente el peso de la estructura así como reducir el coste de la misma adicionalmente. Another aspect of the invention is that the support structure may comprise: a support frame for battery modules, which is coupled to the vehicle chassis, and a lower cover. The bottom cover provides insulation to the battery modules in cooperation with the top cover. Optionally, the lower cover may comprise a main body of plastic material and a conductive mesh analogously to the upper cover, such that the lower cover conductive mesh provides a cage effect from Faraday, counteracting the electromagnetic field generated by the battery modules in the tank, in cooperation with the conductive mesh of the upper deck. For this, the upper cover conductive mesh and the lower cover conductive mesh are arranged by enclosing the battery modules inside. The support frame of the invention can be of any material with the robustness necessary to support the entire weight of the tank, preferably metal, for example steel or duralumin. As indicated above, the conventional support structures are usually made of steel material, so that, with the characteristics of the present invention, it is possible to significantly lighten the weight of the structure as well as reduce the cost thereof in addition.
Preferentemente, el bastidor de soporte tenga forma de marco, lo que permite aligerar el peso del mismo adicionalmente. Se contempla que el bastidor de soporte con forma de marco incorpora un saliente de refuerzo perimetral interior para fijación de la cubierta inferior y de otros elementos del depósito como se describirá más adelante. Sin embargo, la forma del bastidor de soporte puede ser cualquiera, pudiendo incluir por ejemplo elementos de refuerzo como herrajes, diagonales etc.  Preferably, the support frame is in the form of a frame, which makes it possible to lighten its weight further. It is contemplated that the frame-shaped support frame incorporates an inner perimeter reinforcement projection for fixing the lower cover and other elements of the tank as will be described later. However, the shape of the support frame can be any, and may include, for example, reinforcement elements such as hardware, diagonals, etc.
En relación con las características de la malla conductora y el cuerpo principal de cubierta inferior puede aplicarse lo mismo que a la malla conductora y el cuerpo principal de cubierta superior. Asimismo, también los procesos para la unión entre cuerpo principal y malla conductora de cubierta inferior son análogos a los descritos anteriormente para la cubierta superior.  In relation to the characteristics of the conductive mesh and the main body of the lower cover, the same can be applied as to the conductive mesh and the main body of the upper cover. Likewise, also the processes for the union between main body and conductive mesh of lower cover are analogous to those described above for the upper cover.
Opcionalmente, para mejorar la resistencia de la estructura de soporte sin que ello acarree una penalizacion en el peso de la misma, la invención contempla la incorporación de un panel de soporte de nido de abeja. El panel de soporte puede obtenerse a partir de cualquier material, preferiblemente ligero, como plástico o aluminio. El panel puede disponerse apoyado en el bastidor de soporte, particularmente en una realización del bastidor con forma de marco el panel puede disponerse apoyado en los salientes de refuerzo. También se contempla que el depósito incorpore más de un panel de nido de abeja, apilados uno encima de otro, a tope uno al lado del otro, etc.  Optionally, to improve the strength of the support structure without causing a penalty in the weight thereof, the invention contemplates the incorporation of a honeycomb support panel. The support panel can be obtained from any material, preferably light, such as plastic or aluminum. The panel can be arranged supported on the support frame, particularly in an embodiment of the frame-shaped frame the panel can be arranged supported on the reinforcement projections. It is also contemplated that the tank incorporates more than one honeycomb panel, stacked one on top of the other, butt side by side, etc.
El panel de soporte de aluminio o de un material con conductividad eléctrica proporciona la ventaja adicional de mejorar el efecto de Faraday. En el caso de emplear materiales metálicos o materiales sujetos a oxidación se debe tener la precaución de evitar incompatibilidades por oxidación-reducción entre ellos. Por ello, en particular se encuentra preferible utilizar un mismo material metálico al menos para la malla conductora que para el panel de soporte metálico. The support panel made of aluminum or an electrically conductive material provides the additional advantage of improving the Faraday effect. In the case of using metal materials or materials subject to oxidation, care must be taken to avoid incompatibilities due to oxidation-reduction between them. Therefore, in particular it is preferable to use the same metallic material at least for the conductive mesh than for the metal support panel.
Adicionalmente, la estructura de soporte comprende travesaños de soporte que pueden apoyarse por sus extremos en el bastidor de soporte, fijándose al mismo. Los módulos de baterías se conectan y fijan preferentemente a los travesaños de soporte, distribuyendo la carga del peso de los módulos al resto de la estructura. Los travesaños pueden ser perfiles resistentes a flexión, o sustituirse por chapas, placas o flejes únicamente con la función de servir de fijación a los módulos de baterías. Este último caso se contempla cuando los travesaños se utilizan junto a paneles de soporte. Por último, en relación con los materiales a emplear para los travesaños no existe limitación; preferiblemente son metálicos, por ejemplo de acero o de duraluminio, tomando la precaución de la compatibilidad oxidación- reducción con respecto al resto de elementos del depósito.  Additionally, the support structure comprises support cross members that can be supported by their ends in the support frame, being fixed thereto. The battery modules are preferably connected and fixed to the support crossbars, distributing the weight load of the modules to the rest of the structure. The crossbars can be flex-resistant profiles, or be replaced by sheets, plates or strapping only with the function of serving as a fixation to the battery modules. The latter case is contemplated when the crossbars are used together with support panels. Finally, in relation to the materials to be used for the crossbars there is no limitation; preferably they are metallic, for example of steel or duralumin, taking the precaution of oxidation-reduction compatibility with respect to the other elements of the tank.
Opcionalmente, la cubierta inferior y el panel de soporte se disponen apoyados en el bastidor de soporte y fijados al mismo a través de salientes de refuerzo del bastidor. El panel de soporte puede situarse tanto dentro de la cubierta inferior como fuera.  Optionally, the lower cover and the support panel are arranged supported on the support frame and fixed thereto through reinforcement projections of the frame. The support panel can be located both inside the bottom cover and outside.
En una realización preferente, la estructura de soporte comprende un bastidor de soporte con forma de marco y que incluye salientes de refuerzo para fijación del resto de elementos. Sobre el bastidor de soporte se sitúa la cubierta inferior de la invención y en contacto con la cubierta inferior, por encima o por debajo de la misma, se dispone un panel de soporte. Finalmente, en el interior de la cubierta se sitúan los travesaños de soporte a los que se aseguran los módulos de baterías de forma convencional.  In a preferred embodiment, the support structure comprises a frame-shaped support frame and includes reinforcement projections for fixing the rest of the elements. The lower cover of the invention is placed on the support frame and in contact with the lower cover, above or below it, a support panel is arranged. Finally, inside the cover are the support crossbars to which the battery modules are secured in a conventional manner.
Las cubiertas inferior y superior pueden incluir respectivos rebordes para fijación entre sí. La fijación entre la cubierta inferior y superior puede realizarse por medios de fijación convencionales como fijación por apriete (e.g. atornillada, roblonada o remachada, con brida), por retención (e.g. con lengüetas retenedoras), a presión (e.g. encajada), etc.  The lower and upper covers may include respective flanges for fixing to each other. The fixing between the lower and upper cover can be carried out by conventional fixing means such as tightening (e.g. bolted, bolted or riveted, with flange), by retention (e.g. with retaining tabs), under pressure (e.g. embedded), etc.
Con respecto a la fijación entre los distintos elementos descritos que comprende de la estructura de soporte de la invención, ésta puede realizarse como se indica a continuación. La fijación entre los travesaños de soporte, la cubierta inferior, el panel de soporte y el bastidor de soporte puede realizarse conjuntamente, preferentemente de forma removible, por ejemplo mediante medios de fijación mecánica por atornillado pasante. Alternativamente pueden fijarse separadamente distintos elementos entre sí. En este sentido por ejemplo se contempla que el panel de soporte pueda fijarse a la cubierta inferior independientemente por medios de fijación convencionales como fijación por adhesivo, por apriete (e.g. atornillada, roblonada o remachada, con brida), por retención (e.g. con lengüetas retenedoras), a presión (e.g. encajada), etc. También se contempla que los travesaños puedan fijarse al bastidor de soporte independientemente por medios de fijación convencionales como fijación por apriete atornillada o por soldadura. Por último, se contempla también el caso de que los travesaños se integren en la estructura del bastidor de soporte. With respect to the fixation between the different elements described comprising the support structure of the invention, this can be carried out as indicated below. The fixing between the support cross members, the lower cover, the support panel and the support frame can be carried out jointly, preferably removably, for example by means of mechanical fixing by means of through bolting. Alternatively, different elements can be fixed separately. In this sense, for example, it is contemplated that the support panel can be fixed to the lower cover independently by conventional fixing means such as adhesive fixing, by tightening (eg screwed, robbed or riveted, with flange), by retention (eg with retaining tabs ), under pressure (eg embedded), etc. It is also contemplated that the crossbars can be fixed to the support frame independently by conventional fixing means such as bolted tightening or welding. Finally, it is also contemplated that the crossbars are integrated into the structure of the support frame.
Auxiliarmente, la invención puede incorporar juntas de estanqueidad en la junta entre la cubierta superior y la cubierta inferior así como en los orificios del depósito correspondientes a los medios de fijación, etc.  In addition, the invention can incorporate sealing gaskets in the joint between the upper cover and the lower cover as well as in the holes of the tank corresponding to the fixing means, etc.
En definitiva, la presente invención proporciona un depósito de baterías para vehículo eléctrico de peso y coste reducidos. Además la invención ofrece mejoras respecto al estado de la técnica conocido según se ha descrito anteriormente. Todo ello por tanto resolviendo el problema técnico planteado.  Ultimately, the present invention provides a battery tank for electric vehicles of reduced weight and cost. In addition, the invention offers improvements over the state of the art known as described above. All this therefore solving the technical problem raised.
DESCRIPCIÓN DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS
Para complementar la explicación de la invención y con objeto de ayudar a una mejor comprensión de sus características técnicas, se hace referencia en el resto de esta memoria descriptiva a los dibujos que la acompañan, en los que se ha representado, a modo de ejemplo práctico no limitativo, una realización de la invención. To complement the explanation of the invention and in order to help a better understanding of its technical characteristics, reference is made in the rest of this specification to the accompanying drawings, in which it has been represented, as a practical example non-limiting, an embodiment of the invention.
En dichos dibujos:  In these drawings:
La Figura 1 es una vista en perspectiva explosionada del acoplamiento entre el depósito de baterías de la realización y el chasis de un vehículo eléctrico.  Figure 1 is an exploded perspective view of the coupling between the battery reservoir of the embodiment and the chassis of an electric vehicle.
La Figura 2 muestra una vista en perspectiva explosionada del depósito de baterías de la realización. La Figura 3 muestra una vista en perspectiva de la cubierta superior e inferior con la malla conductora solapada superficialmente. Figure 2 shows an exploded perspective view of the battery reservoir of the embodiment. Figure 3 shows a perspective view of the upper and lower cover with the surface mesh overlapping.
Las referencias empleadas en las figuras son las siguientes:  The references used in the figures are the following:
1 : chasis del vehículo  1: vehicle chassis
2: depósito de baterías  2: battery tank
3: módulo de baterías  3: battery module
4: estructura de soporte  4: support structure
5: cubierta superior  5: top cover
6: cuerpo principal de cubierta superior  6: upper deck main body
7: malla conductora de cubierta superior  7: conductive mesh upper cover
8: medios de fijación de estructura de soporte al chasis del vehículo  8: means for fixing the support structure to the vehicle chassis
9: bastidor de soporte  9: support frame
10: cubierta inferior  10: bottom cover
1 1 : panel de soporte  1 1: support panel
12: travesaño de soporte  12: support crossbar
13: reborde de cubierta superior  13: top cover flange
14: reborde de cubierta inferior  14: bottom cover flange
DESCRIPCIÓN DE UNA REALIZACIÓN DE LA INVENCIÓN DESCRIPTION OF AN EMBODIMENT OF THE INVENTION
Con referencia en primer lugar a la Figura 1 , en ella se muestra el acoplamiento entre el depósito (2) de baterías para vehículo eléctrico de la realización y el chasis (1 ) del vehículo eléctrico. Como puede observarse en la Figura, el depósito (2) comprende: una cubierta (5) superior; y una estructura (4) de soporte, fijada a los largueros del chasis (1 ) por medios (8) de fijación por atornillado. La estructura (4) de soporte se atornilla por cuatro puntos de anclaje en cada larguero. Opcionalmente puede incorporar los dos puntos de anclaje frontales que se muestran adicionalmente en la Figura, para rigidizar la estructura ante cargas (de inercia) sobre el plano horizontal. Referring first to Figure 1, the coupling between the battery tank (2) for the electric vehicle of the embodiment and the chassis (1) of the electric vehicle is shown. As can be seen in the Figure, the tank (2) comprises: an upper cover (5); and a support structure (4), fixed to the stringers of the chassis (1) by means (8) of screw fixing. The support structure (4) is screwed by four anchor points on each stringer. Optionally you can incorporate the two front anchor points that are additionally shown in the Figure, to stiffen the structure against loads (of inertia) on the horizontal plane.
En la Figura 2, se representa el depósito (2) de la realización de la invención explosionada en tres partes ordenadas según la posición que ocupan una vez montadas en el depósito (2), de abajo a arriba: el bastidor (9) de soporte; la cubierta (10) inferior con el panel (1 1 ) de soporte, los travesaños (12) de soporte y los módulos (3) de baterías alojados en su interior; y la cubierta (5) superior. Como se ilustra en la Figura, los travesaños (4) de soporte, el panel (1 1 ) de soporte y la cubierta (10) inferior se unen al bastidor (9) de soporte por atornillado, como por ejemplo tornillos pasantes. Por su parte, los módulos (3) de baterías también se fijan a los travesaños de soporte mediante atornillado. Finalmente, la cubierta (5) superior cierra todo el conjunto fijándose a la cubierta (10) inferior; la fijación entre la cubierta (5) superior y la cubierta (10) inferior se realiza así mismo por atornillado a lo largo de los rebordes (13,14) de cubierta superior y de cubierta inferior. In Figure 2, the tank (2) of the embodiment of the invention exploded in three parts arranged according to the position they occupy once mounted on the tank (2) is shown, from bottom to top: the support frame (9) ; the lower cover (10) with the support panel (1 1), the support crossbars (12) and the battery modules (3) housed therein; and the upper cover (5). How I know illustrated in the Figure, the support cross members (4), the support panel (1 1) and the lower cover (10) are connected to the support frame (9) by screwing, such as through screws. On the other hand, the battery modules (3) are also fixed to the support crossbars by screwing. Finally, the upper cover (5) closes the entire assembly by fixing to the lower cover (10); the fixing between the upper cover (5) and the lower cover (10) is likewise done by screwing along the flanges (13,14) of the upper and lower cover.
Finalmente, la Figura 3 muestra una vista en perspectiva de la cubierta (5) superior en la que puede apreciarse la disposición de la malla (7) conductora solapada sobre la superficie interior al cuerpo (6) principal de la cubierta (5). En el detalle se ilustra el tipo de malla (7) conductora elegida en la realización.  Finally, Figure 3 shows a perspective view of the upper cover (5) in which the arrangement of the conductive mesh (7) overlapped on the inner surface to the main body (6) of the cover (5) can be seen. The type of conductive mesh (7) chosen in the embodiment is illustrated in detail.
El material seleccionado para la malla (7) de la cubierta (5) de la realización es preferentemente metálico, la malla metálica puede solaparse a la cara interior de sendas cubiertas simplemente encajada en el cuerpo (6) principal de la cubierta (5), una vez que la malla (7) y el cuerpo (6) principal se hayan conformado separadamente. La malla metálica puede conformarse por embutición partiendo de una malla plana. Por otra parte, el cuerpo principal puede conformarse por inyección de termoplástico en molde cerrado.  The material selected for the mesh (7) of the cover (5) of the embodiment is preferably metallic, the metal mesh can overlap the inner side of covered paths simply fitted into the main body (6) of the cover (5), once the mesh (7) and the main body (6) have been formed separately. The metal mesh can be formed by drawing starting from a flat mesh. On the other hand, the main body can be shaped by injection of thermoplastic into a closed mold.

Claims

REIVINDICACIONES
1. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, que comprende: una estructura de soporte para módulos de baterías, acoplada al chasis del vehículo; y una cubierta superior acoplada a la estructura de soporte, dicha cubierta superior proporcionando aislamiento a los módulos de baterías en cooperación con la estructura de soporte; 1. - BATTERY DEPOSIT FOR ELECTRIC VEHICLE, comprising: a support structure for battery modules, coupled to the vehicle chassis; and an upper cover coupled to the support structure, said upper cover providing isolation to the battery modules in cooperation with the support structure;
el depósito caracterizado porque:  the deposit characterized by:
la cubierta superior comprende: un cuerpo principal de cubierta superior, de material plástico; y una malla conductora de cubierta superior;  the upper cover comprises: a main body of upper cover, of plastic material; and a conductive mesh of upper cover;
de manera que la malla conductora de cubierta superior proporciona un efecto de jaula de Faraday, contrarrestando el campo electromagnético generado por los módulos de baterías en el depósito, en cooperación con la estructura de soporte.  so that the conductive mesh of upper cover provides a Faraday cage effect, counteracting the electromagnetic field generated by the battery modules in the tank, in cooperation with the support structure.
2. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según la reivindicación 1 , caracterizado porque la malla conductora de cubierta superior es de material metálico seleccionado del grupo que consiste en: acero, titanio, cobre y aluminio. 2. - BATTERY DEPOSIT FOR ELECTRIC VEHICLE, according to claim 1, characterized in that the upper cover conductive mesh is of metallic material selected from the group consisting of: steel, titanium, copper and aluminum.
3. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según la reivindicación 2, caracterizado porque la malla conductora metálica de cubierta superior tiene forma seleccionada del grupo que consiste en: rejilla metálica, tela metálica, metal desplegado y chapa perforada. 3. - BATTERY TANK FOR ELECTRIC VEHICLE, according to claim 2, characterized in that the upper conductive metal mesh has a shape selected from the group consisting of: metal grid, wire netting, unfolded metal and perforated sheet.
4. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según una de las reivindicaciones 1 -3, caracterizado porque el material plástico del cuerpo principal de cubierta superior se selecciona del grupo que consiste en: termoplástico, termoestable, plástico conductor y plástico reforzado. 4. - BATTERY TANK FOR ELECTRIC VEHICLE, according to one of claims 1 -3, characterized in that the plastic material of the main body of upper cover is selected from the group consisting of: thermoplastic, thermoset, conductive plastic and reinforced plastic.
5. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según una de las reivindicaciones 1 -4, caracterizado porque la malla conductora de cubierta superior se une al cuerpo principal de cubierta superior por un proceso seleccionado del grupo que consiste en malla embebida en el cuerpo principal, malla solapada al cuerpo principal, malla fijada mecánicamente al cuerpo principal y una combinación de los anteriores. 5. - BATTERY TANK FOR ELECTRIC VEHICLE, according to one of claims 1 -4, characterized in that the upper cover conductive mesh is joined to the upper upper main body by a process selected from the group consisting of mesh embedded in the main body , mesh overlapped to the main body, mesh mechanically fixed to the main body and a combination of the above.
6. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según una de las reivindicaciones 1 -5, en el que la estructura de soporte comprende: 6. - BATTERY DEPOSIT FOR ELECTRIC VEHICLE, according to one of claims 1 -5, wherein the support structure comprises:
- un bastidor de soporte para módulos de baterías, acoplado al chasis del vehículo; y  - a support frame for battery modules, coupled to the vehicle chassis; Y
- una cubierta inferior, acoplada a la cubierta superior; la cubierta inferior proporcionando aislamiento a los módulos de baterías en cooperación con la cubierta superior;  - a lower cover, coupled to the upper cover; the lower cover providing insulation to the battery modules in cooperation with the upper cover;
el depósito caracterizado porque:  the deposit characterized by:
la estructura de soporte comprende adicionalmente un panel de soporte de nido de abeja.  The support structure additionally comprises a honeycomb support panel.
7. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según la reivindicación 6, caracterizado porque: la cubierta inferior y el panel de soporte se disponen apoyados en el bastidor de soporte y fijados al mismo; el panel de soporte situado en una posición seleccionada del grupo que consiste en: dentro de la cubierta inferior y fuera de la cubierta inferior. 7. - BATTERY DEPOSIT FOR ELECTRIC VEHICLE, according to claim 6, characterized in that: the lower cover and the support panel are arranged supported on the support frame and fixed thereto; the support panel located in a position selected from the group consisting of: inside the lower cover and outside the lower cover.
8. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según una de las reivindicaciones 6-7, caracterizado porque la estructura de soporte comprende adicionalmente al menos un travesaño de soporte apoyado por sus extremos en el bastidor de soporte y fijado al mismo. 8. - BATTERY DEPOSIT FOR ELECTRIC VEHICLE, according to one of claims 6-7, characterized in that the support structure additionally comprises at least one support cross member supported by its ends in the support frame and fixed thereto.
9. - DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según la reivindicación 8, caracterizado porque: el al menos un travesaño de soporte se sitúa dentro de la cubierta inferior; y los módulos de baterías se apoyan en el al menos un travesaño de soporte, conectándose fijamente a dicho al menos un travesaño de soporte. 9. - BATTERY TANK FOR ELECTRIC VEHICLE, according to claim 8, characterized in that: the at least one support cross member is located inside the lower cover; and the battery modules rest on the at least one support cross member, with at least one support cross member connected to said support.
10.- DEPÓSITO DE BATERÍAS PARA VEHÍCULO ELÉCTRICO, según una de las reivindicaciones 6-9, caracterizado porque la cubierta superior y la cubierta inferior incorporan respectivos reborde de cubierta superior y reborde de cubierta inferior, por el que se conectan fijamente entre sí. 10.- BATTERY DEPOSIT FOR ELECTRIC VEHICLE, according to one of claims 6-9, characterized in that the upper cover and the cover lower incorporate respective upper cover flange and lower cover flange, whereby they are fixedly connected to each other.
PCT/ES2011/070180 2011-03-16 2011-03-16 Battery store for an electric vehicle WO2012123596A1 (en)

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US9428059B2 (en) 2014-06-30 2016-08-30 Robert Bosch Gmbh Vehicle having improved battery shielding
WO2019100395A1 (en) * 2017-11-27 2019-05-31 深圳市大富科技股份有限公司 Chassis assembly for electric vehicle, chassis platform and electric vehicle
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WO2019100395A1 (en) * 2017-11-27 2019-05-31 深圳市大富科技股份有限公司 Chassis assembly for electric vehicle, chassis platform and electric vehicle
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