WO2009103462A1 - Battery comprising a battery housing and a heat conducting plate for controlling the temperature of the battery - Google Patents

Battery comprising a battery housing and a heat conducting plate for controlling the temperature of the battery Download PDF

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Publication number
WO2009103462A1
WO2009103462A1 PCT/EP2009/001048 EP2009001048W WO2009103462A1 WO 2009103462 A1 WO2009103462 A1 WO 2009103462A1 EP 2009001048 W EP2009001048 W EP 2009001048W WO 2009103462 A1 WO2009103462 A1 WO 2009103462A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
conducting plate
battery according
heat
individual cells
Prior art date
Application number
PCT/EP2009/001048
Other languages
German (de)
French (fr)
Inventor
Jens Meintschel
Dirk Schröter
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2009103462A1 publication Critical patent/WO2009103462A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into batteries
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/567—Terminals characterised by their manufacturing process by fixing means, e.g. screws, rivets or bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/667—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an electronic component, e.g. a CPU, an inverter or a capacitor
    • 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
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a battery having a battery housing and a heat conducting plate for tempering the battery, wherein the battery has a plurality of parallel and / or serially interconnected individual cells, the heat conductively connected to the heat conducting, wherein the heat conducting plate in the region of the poles of the individual cells has recesses through which the poles protrude, wherein the individual cells and the heat conducting plate are thermally coupled together and electrically isolated from each other.
  • a battery with a housing and a heat conducting plate for tempering the battery is known.
  • the battery can be used as a vehicle battery, for example in a vehicle with hybrid drive and / or in a fuel cell operated vehicle.
  • the battery has a plurality of parallel and / or serially interconnected individual cells, which are arranged with the longitudinal axes parallel to each other. The individual cells are combined into a cell network.
  • the heat conducting plate has recesses in the region of the respective poles, through which protrude the poles of the individual cells.
  • an insulation piece or an insulation cap is placed on the poles of each individual cell.
  • an electrically insulating and highly thermally conductive potting compound or a heat-conducting foil is arranged between the heat-conducting plate and the cell or housing cover.
  • the invention has for its object to provide a battery, which is simple and inexpensive.
  • the object is achieved by the features specified in claim 1.
  • the battery according to the invention with a battery housing and a heat conduction plate for temperature control of the battery has a plurality of parallel and / or serially interconnected individual cells, which are combined to form a cell network.
  • the cell assembly is in particular heat-conductively connected on the top side to the heat-conducting plate.
  • the heat conducting plate has recesses in the region of the poles of the individual cells, through which the poles protrude.
  • an electrically insulating and thermally conductive molded part is arranged on the individual cells, in particular the cell assembly.
  • the molded part in the region of the poles recesses, in particular through holes, and / or formations, wherein in each case a through hole and a molding associated with the poles of a single cell.
  • one of the poles of a single cell protrudes through the through hole.
  • the other pole of the single cell protrudes into the shape of the molded part.
  • the shaped part is plate-shaped, wherein in the region of the poles of a single cell, hollow structures and / or recesses are formed from the molded part or introduced into a surface facing the heat-conducting plate into which or through which the poles enter. or protrude through.
  • the plate-shaped molding also called moldings
  • the formations and / or recesses of the molded part correspond with recesses or formations of the heat conducting plate.
  • the molded part and the heat-conducting in a simple manner, in particular in the manner of a plug-in connection, form, material and / or non-positively plugged into one another and / or connectable.
  • the molded part By forming the molded part as an electrically insulating and at the same time thermally conductive molded part, a number of parts of the battery is significantly reduced, resulting in a cost reduction and a reduction in assembly time. In particular, a variety of insulation caps between poles and cooling or shallleitplatte and consuming shallleitfolien between housing cover and heat conduction safely avoided.
  • assembly of the battery is enormously simplified due to the reduction in the number of parts.
  • the simple construction of the battery also increases process reliability.
  • the molded part has a high thermal conductivity, whereby a heat generated by the individual cells during charging and discharging can also be dissipated via the poles and particularly preferably the heat conducting plate can be fed.
  • the molding is formed as a forming part, in particular a casting, an injection molding or extrusion part.
  • the molded part is made of a plastic, for example polyurethane, epoxy resin or silicone.
  • this may in one possible embodiment be formed with substances, in particular a thermally conductive material, which is provided, for example, with an electrically insulating material, in particular a plastic layer of, for example, polyimide.
  • this has a high flexibility and / or elasticity, whereby component tolerances and thermal expansion can be compensated.
  • the molded part is attached to the heat conduction plate in a positive, force and / or material fit, in particular glued. Furthermore, the molded part can be applied directly to the heat conduction plate in a Anspritzmaschinen.
  • an electrical contacting element is arranged on each pole.
  • the contacting element is formed, for example, as a cell connector connecting poles of various single cells, or as a so-called cell connector board provided with connection elements for connecting poles of different single cells.
  • the individual cells of the battery are preferably fastened by means of the Zeiienverbinder on the heat conducting plate.
  • the poles of the individual cells with the cell connectors for example, welded or screwed, whereby the single cells are easily and safely positioned and fixed to the heat conduction.
  • protruding poles of the individual cells positioning and alignment of the individual cells in the recesses of the molded part and the heat conducting plate during assembly allows, so that an additional use or other components for positioning and alignment of the individual cells for producing the cell composite are not required.
  • a cost-effective, space-optimized, thermally resilient and / or mechanically loadable cell composite is made possible by the use of the heat conducting plate as a cooling device and mounting or positioning and holding element.
  • the interspaces may also be filled with a thermally conductive and electrically insulating potting compound and / or foam.
  • the battery according to the invention in particular a vehicle battery, can be used in a vehicle with hybrid drive and / or in a vehicle powered by fuel cells, in particular in a motor vehicle for transporting persons.
  • FIG. 1 shows a perspective exploded view of a single-cell cell designed as a round cell with a plug-in electrically insulating molded part according to the prior art in an exploded view
  • FIG. 3 schematically shows an exploded view of a cell assembly with a top side arranged molding and a heat conducting
  • Fig. 4 is a sectional view of the battery according to the invention in the mounted state. Corresponding parts are provided in all figures with the same reference numerals.
  • FIG. 1 shows an exploded view of an executed as a round cell single cell 1 according to the prior art. It is on pole 2 of the single cell 1, a molded part 3 can be arranged. The molded part 3 is directly against the poles 2 and encloses them, whereby the poles 2 are electrically insulated in the circumference thereof. In this case, the molded part 3 surrounds a pair of poles 2 of a respective single cell 1.
  • the molded part 3 is formed from an electrically insulating material, in particular plastic.
  • the single cell 1 is designed for example as a round cell, which has a jacket 1.1, for example made of aluminum.
  • the casing 1.1 has honeycomb segments 1.1.1 on opposite sides.
  • FIG. 2 shows in perspective an exploded view of the battery 4 according to the invention.
  • the battery 4 comprises a battery housing 5, in which a cell assembly 6 formed from a plurality of individual cells 1 is arranged.
  • the individual cells 1 are designed, for example, as round cells, which have a jacket 1.1, for example made of aluminum.
  • the casing 1.1 has honeycomb segments 1.1.1 on opposite sides. Due to the approximately round design of Einzellen 1 a base of the battery case 5 is used space-optimized.
  • a heat-conducting plate 7 is arranged on the head side of the individual cells 1.
  • the heat conducting plate 7 to the poles 2 of the individual cells 1, shown in Figure 3, corresponding recesses 7.1.
  • an all pole 2 of the individual cells 1 is electrically insulated from the heat-conducting plate 7 and all the poles 2 of the individual line 1 are thermally coupled to the heat-conducting plate 7.
  • the molded part 3 has with the poles 2 of the individual cells 1 corresponding formations 3.1, z. B. elevations or bulges, in which one of the poles 2 of the respective single cell 1 engages, and / or recesses 3.2, z. B. in the form of Through holes, on, through which the other pole 2 of the respective single cell 1 protrudes.
  • the molding 3 has a number of poles 2 corresponding number of formations 3.1 and / or recesses 3.2.
  • the individual cells 1, in particular poles 2 of different individual cells 1, are electrically interconnected or interconnected by means of cell connectors 8, in particular in parallel and / or in series.
  • the individual cells 1 are advantageously fastened or prestressed by means of the cell connectors 8 on the heat-conducting plate 7.
  • the poles 2 of the individual cells 1 are welded or screwed to the cell connectors 8, for example, so that the individual cells 1 are simply and securely positioned and fixed on the heat-conducting plate 7.
  • the cell assembly 6 with the heat-conducting plate 7 arranged on the side can also be connected to battery electronics 9, to which a plug 10, in particular a high-voltage plug, for connecting the battery 4, for example to a voltage network of a vehicle, is arranged.
  • the battery case 5 can be covered with a housing cover 5.1.
  • the housing cover 5.1 is fixed and held on the battery housing 5 by means of fastening elements 11, in particular screws.
  • fastening elements 11 in particular screws.
  • the fasteners 11 engage in open ends 12 of the inner wall of the housing 5 arranged guide grooves 13 in the assembled state of the battery 4 a.
  • the heat-conducting plate 7 and the molded part 3 are provided on the edge side with a number of fastening elements 11 corresponding number of recesses 15.
  • the recesses 15 correspond to the inner walls in the housing 5 arranged guide 13th
  • the battery 4 according to the invention in particular a vehicle battery, can be used in a vehicle with hybrid drive and / or in a vehicle powered by fuel cells, in particular for a motor vehicle for transporting persons.
  • FIG. 3 shows an exploded view of the cell network 6 formed from the round or single cells 1. Depending on the application, the individual cells 1 are electrically interconnected in parallel and / or in series.
  • the molded part 3 can be placed and arranged on the poles 2 prior to insertion of the individual cells 1 into the recesses 7.1 of the heat-conducting plate 7.
  • the molded part 3 serves to ensure electrical insulation between the heat-conducting plate 7 and the individual cells 1.
  • the molded part 3 the recesses 3.1 in the form of through holes and the formations 3.2.
  • the molded part 3 is designed such that it has a substantially plate-shaped surface A, which rests directly on a cell top 1.2 of the single cell 1.
  • the molded part 3 has formed structures or protrusions 3.2, in each of which at least one recess 3.1 is arranged.
  • pairs of poles 2 are completely enclosed in their circumference by the formations 3.2. That each pole pair, the molding comprises a molding 3.2 with a recess 3.1.
  • the individual cells 1 of the cell assembly 6, in particular the poles 2 of a respective individual cell 1 are advantageously electrically insulated from the heat-conducting plate 7.
  • the recesses 7.1 of the heat conducting plate 7 correspond in an advantageous manner to the formations 3.2 of the molded part 3.
  • the molded part 3 is advantageously designed as a formed part, in particular as a casting, injection molded part, extruded part. Further, the molded part 3 has a particularly good thermal conductivity, whereby the heat generated by the individual cells 1 during charging and discharging can also be dissipated via the poles 2 and the heat-conducting plate 7 can be supplied.
  • the molded part 3 may be formed in the interior of a thermally conductive material which is externally surrounded by an electrically insulating material.
  • the molded part 3 is made of plastic with thermally conductive material arranged in the interior.
  • plastics for the formation of the molding for example, polyurethane, epoxy resins or silicones may be used.
  • the molded part 3 is executed in a development of the invention particularly flexible and / or elastic. As a result, component tolerances and thermal expansion can be compensated.
  • the molded part 3 can be fastened to the heat-conducting plate 7 in a positive, force and / or materially bonded manner, in particular adhesively. Furthermore, the molded part 3 can be applied directly to the heat-conducting plate 7 in a Anspritzmaschinen.
  • an electrical contacting element in the form of the cell connectors 8 is arranged on a pole 2 of adjacent individual cells 1.
  • the individual cells 1 are preferably fastened to the heat-conducting plate 7 by means of the cell connectors 8.
  • the cell connector 8 with the respective pole 2, for example, welded or braced or screwed.
  • the single cells 1 are easily and securely positioned and fixed to the heat conducting plate 7.
  • FIG. 4 shows a sectional view of the battery 4 according to the invention with the battery housing 5 and the housing cover 5.1.
  • the individual cells 1 arranged parallel to one another in the battery housing 5 with their longitudinal axes are designed as round cells.
  • Housing cover 5.1 the battery electronics 9 is arranged.
  • the plug 10 is in this case arranged such that it is outside the housing 5.
  • the molded part 3 serves both the electrical insulation between the cell assembly 6 formed from individual cells 1 and the heat conducting plate 7 and the heat dissipation.
  • the heat-conducting plate 7 has connecting elements 14 to which, for example, an air conditioning circuit of an air conditioning system of the vehicle is connected.
  • the heat-conducting plate 7 is flowed through by the refrigerant of the air conditioning circuit, whereby heat generated during charging and discharging of the individual cells 1 can be dissipated in an advantageous manner.
  • contacting elements in the form of cell connectors 8 are arranged on poles 2, for example adjacent single cells 1.
  • the cell connectors 8 serve to secure the individual cells 1 to the heat-conducting plate 7.
  • the poles 2 of each individual cell 1 project through the Recesses 3.1 of the molded part 3 and over the recesses 7.1 of the heat conducting 7 therethrough.
  • the cell connector 8 is welded or screwed to the poles 2, for example, of adjacent individual cells 1. By welding or screwing the single cells 1 are easily and securely positioned and fixed to the heat conducting plate 7.
  • gaps between the individual cells 1 and spaces between further components arranged in the battery housing 5 can be filled with an electrically insulating and thermally conductive potting compound and / or foam.

Abstract

The invention relates to a battery (4) comprising a battery housing (5) and a heat conducting plate (7) for controlling the temperature of the battery (4). Said battery (4) further comprises several individual cells (1) which are interconnected in parallel and/or in series and are connected in a heat conducting manner to the heat conducting plate (7). The heat conducting plate (7) has recesses (7.1) in the region of the poles (2) of the individual cells (1), the poles (2) projecting through said recesses (7.1). The individual cells (1) and the heat conducting plate (7) are thermally coupled to and electrically insulated from each other. According to the invention, a heat conductive and electrically insulating molded part (3) is arranged between the individual cells (1) and the heat conducting plate (7).

Description

Batterie mit einem Batteriegehäuse und einer Wärmeleitplatte zum Temperieren der Battery with a battery case and a heat conducting plate for tempering the
Batteriebattery
Die Erfindung betrifft eine Batterie mit einem Batteriegehäuse und einer Wärmeleitplatte zum Temperieren der Batterie, wobei die Batterie mehrere parallel und/oder seriell miteinander verschaltete Einzelzellen aufweist, die Wärme leitend mit der Wärmeleitplatte verbunden sind, wobei die Wärmeleitplatte im Bereich der Pole der Einzelzellen Aussparungen aufweist, durch welche die Pole hindurchragen, wobei die Einzelzellen und die Wärmeleitplatte thermisch miteinander gekoppelt und elektrisch voneinander isoliert sind.The invention relates to a battery having a battery housing and a heat conducting plate for tempering the battery, wherein the battery has a plurality of parallel and / or serially interconnected individual cells, the heat conductively connected to the heat conducting, wherein the heat conducting plate in the region of the poles of the individual cells has recesses through which the poles protrude, wherein the individual cells and the heat conducting plate are thermally coupled together and electrically isolated from each other.
Aus der P810645/DE/1 (Amtl. Az. 10 2007 063 178.4) ist eine Batterie mit einem Gehäuse und einer Wärmeleitplatte zum Temperieren der Batterie bekannt. Die Batterie ist als Fahrzeugbatterie beispielsweise in einem Fahrzeug mit Hybridantrieb und/oder in einem mit Brennstoffzellen betriebenen Fahrzeug einsetzbar. Dabei weist die Batterie mehrere parallel und/oder seriell miteinander verschaltete Einzelzellen auf, die mit den Längsachsen parallel zueinander angeordnet sind. Dabei sind die Einzelzellen zu einem Zellenverbund zusammengefasst. Die Wärmeleitplatte weist Aussparungen im Bereich der jeweiligen Pole auf, durch welche die Pole der Einzelzellen hinausragen. Für eine elektrische Isolation zwischen Einzelzelle und Wärmeleitplatte ist auf die Pole einer jeden Einzelzelle ein Isolationsstück oder eine Isolationskappe aufgesetzt. Darüber hinaus ist zwischen Wärmeleitplatte und Zell- oder Gehäusedeckel eine elektrisch isolierende und gut wärmeleitfähige Vergussmasse oder eine Wärmeleitfolie angeordnet.From P810645 / DE / 1 (Amt. Az. 10 2007 063 178.4), a battery with a housing and a heat conducting plate for tempering the battery is known. The battery can be used as a vehicle battery, for example in a vehicle with hybrid drive and / or in a fuel cell operated vehicle. In this case, the battery has a plurality of parallel and / or serially interconnected individual cells, which are arranged with the longitudinal axes parallel to each other. The individual cells are combined into a cell network. The heat conducting plate has recesses in the region of the respective poles, through which protrude the poles of the individual cells. For electrical isolation between the single cell and the heat conducting plate, an insulation piece or an insulation cap is placed on the poles of each individual cell. In addition, an electrically insulating and highly thermally conductive potting compound or a heat-conducting foil is arranged between the heat-conducting plate and the cell or housing cover.
Nachteilig dabei ist, dass zur Herstellung einer solchen Batterie eine Vielzahl von Bauteilen benötigt wird, wodurch eine Montage sehr zeit- und kostenintensiv ist.The disadvantage here is that for the production of such a battery, a plurality of components is required, whereby an assembly is very time consuming and costly.
Der Erfindung liegt die Aufgabe zugrunde, eine Batterie anzugeben, welche einfach und kostengünstig aufgebaut ist. Die Aufgabe wird erfindungsgemäß durch die in Anspruch 1 angegebenen Merkmale gelöst.The invention has for its object to provide a battery, which is simple and inexpensive. The object is achieved by the features specified in claim 1.
Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous developments of the invention are the subject of the dependent claims.
Die erfindungsgemäße Batterie mit einem Batteriegehäuse und einer Wärmeleitplatte zum Temperieren der Batterie weist mehrere parallel und/oder seriell miteinander verschaltete Einzelzellen auf, die zu einem Zellenverbund zusammengefasst sind. Dabei ist der Zellenverbund insbesondere kopfseitig Wärme leitend mit der Wärmeleitplatte verbunden. Die Wärmeleitplatte weist im Bereich der Pole der Einzelzellen Aussparungen auf, durch welche die Pole hindurchragen.The battery according to the invention with a battery housing and a heat conduction plate for temperature control of the battery has a plurality of parallel and / or serially interconnected individual cells, which are combined to form a cell network. In this case, the cell assembly is in particular heat-conductively connected on the top side to the heat-conducting plate. The heat conducting plate has recesses in the region of the poles of the individual cells, through which the poles protrude.
Zur Sicherstellung einer elektrischen Isolation und einer hinreichend guten Wärmeableitung zwischen Wärmeleitplatte und Einzelzelle ist erfindungsgemäß ein elektrisch isolierendes und wärmeleitfähiges Formteil auf den Einzelzellen, insbesondere dem Zellenverbund angeordnet. Dazu weist das Formteil im Bereich der Pole Aussparungen, insbesondere Durchgangslöcher, und/oder Ausformungen auf, wobei jeweils ein Durchgangsloch und eine Ausformung den Polen einer Einzelzelle zugeordnet sind. Dabei ragt einer der Pole einer Einzelzelle durch das Durchgangsloch hindurch. Der andere Pol der Einzelzelle ragt in die Ausformung des Formteils hinein. In einer möglichen Ausführungsform ist das Formteil plattenförmig ausgeführt, wobei im Bereich der Pole einer Einzelzelle, an einer der Wärmeleitplatte zugewandten Fläche Hohlstrukturen und/oder Aussparungen aus dem Formteil ausgeformt bzw. in dieses eingebracht sind, in welche bzw. durch welche die Pole hinein- bzw. hindurchragen. Das plattenförmige Formteil (auch Formkörper genannt) liegt vorzugsweise auf einer Zellenoberseite der Einzelzelle auf.To ensure electrical insulation and a sufficiently good heat dissipation between the heat conducting plate and the single cell, an electrically insulating and thermally conductive molded part is arranged on the individual cells, in particular the cell assembly. For this purpose, the molded part in the region of the poles recesses, in particular through holes, and / or formations, wherein in each case a through hole and a molding associated with the poles of a single cell. In this case, one of the poles of a single cell protrudes through the through hole. The other pole of the single cell protrudes into the shape of the molded part. In one possible embodiment, the shaped part is plate-shaped, wherein in the region of the poles of a single cell, hollow structures and / or recesses are formed from the molded part or introduced into a surface facing the heat-conducting plate into which or through which the poles enter. or protrude through. The plate-shaped molding (also called moldings) is preferably located on a cell top of the single cell.
Darüber hinaus korrespondieren die Ausformungen und/oder Aussparungen des Formteils mit Ausnehmungen bzw. Ausformungen der Wärmeleitplatte. Hierdurch sind das Formteil und die Wärmeleitplatte in einfacher Art und Weise, insbesondere in Art einer Steckverbindung, form-, Stoff- und/oder kraftschlüssig ineinander steckbar und/oder verbindbar.In addition, the formations and / or recesses of the molded part correspond with recesses or formations of the heat conducting plate. As a result, the molded part and the heat-conducting in a simple manner, in particular in the manner of a plug-in connection, form, material and / or non-positively plugged into one another and / or connectable.
Durch Ausbildung des Formteiles als ein elektrisch isolierendes und gleichzeitig wärmeleitfähiges Formteil ist eine Teileanzahl der Batterie deutlich verringert, woraus eine Kostenreduzierung sowie eine Verkürzung einer Montagezeit resultiert. Insbesondere sind eine Vielzahl von Isolationskappen zwischen Polen und Kühl- oder Wärmeleitplatte und aufwändige Wärmeleitfolien zwischen Gehäusedeckel und Wärmeleitplatte sicher vermieden.By forming the molded part as an electrically insulating and at the same time thermally conductive molded part, a number of parts of the battery is significantly reduced, resulting in a cost reduction and a reduction in assembly time. In particular, a variety of insulation caps between poles and cooling or Wärmeleitplatte and consuming Wärmeleitfolien between housing cover and heat conduction safely avoided.
Weiterhin ist aufgrund der Verringerung der Teileanzahl eine Montage der Batterie enorm vereinfacht. Durch den einfachen Aufbau der Batterie ist zudem die Prozesssicherheit erhöht.Furthermore, assembly of the battery is enormously simplified due to the reduction in the number of parts. The simple construction of the battery also increases process reliability.
In besonders vorteilhafter Weise weist das Formteil eine hohe Wärmeleitfähigkeit auf, wodurch eine von den Einzelzellen beim Laden und Entladen erzeugte Wärme auch über die Pole abführbar und besonders bevorzugt der Wärmeleitplatte zuführbar ist.In a particularly advantageous manner, the molded part has a high thermal conductivity, whereby a heat generated by the individual cells during charging and discharging can also be dissipated via the poles and particularly preferably the heat conducting plate can be fed.
Vorzugsweise ist das Formteil als ein Umformteil, insbesondere ein Gussteil, ein Spritzguss- oder Fließpressteil ausgebildet. Beispielsweise ist das Formteil aus einem Kunststoff, beispielsweise Polyurethan, Epoxydharz oder Silikon, gebildet. Zur Erzielung einer gleichzeitig hohen Wärmeleitfähigkeit des Formteiles kann dieses in einer möglichen Ausführungsform mit Stoffen, insbesondere einem wärmeleitfähigen Stoff gebildet sein, der beispielsweise mit einem elektrisch isolierendem Material, insbesondere einer Kunststoffschicht aus beispielsweise Polyimid versehen ist.Preferably, the molding is formed as a forming part, in particular a casting, an injection molding or extrusion part. For example, the molded part is made of a plastic, for example polyurethane, epoxy resin or silicone. To achieve a simultaneously high thermal conductivity of the molded part, this may in one possible embodiment be formed with substances, in particular a thermally conductive material, which is provided, for example, with an electrically insulating material, in particular a plastic layer of, for example, polyimide.
Durch die Bildung des Formteils aus einem der oben genannten Kunststoffe weist dieses eine hohe Flexibilität und/oder Elastizität auf, wodurch Bauteiltoleranzen sowie Wärmedehnungen ausgeglichen werden können.By the formation of the molding of one of the above-mentioned plastics, this has a high flexibility and / or elasticity, whereby component tolerances and thermal expansion can be compensated.
In einer möglichen Ausführungsform ist das Formteil an der Wärmeleitplatte form-, kraft- und/oder stoffschlüssig befestigt, insbesondere geklebt. Ferner kann das Formteil in einem Anspritzverfahren direkt auf die Wärmeleitplatte aufgebracht sein.In one possible embodiment, the molded part is attached to the heat conduction plate in a positive, force and / or material fit, in particular glued. Furthermore, the molded part can be applied directly to the heat conduction plate in a Anspritzverfahren.
Zur elektrischen Verbindung der Einzelzellen ist auf deren Pole jeweils ein elektrisches Kontaktierungselement angeordnet. Hierbei ist das Kontaktierungselement beispielsweise als ein Zellenverbinder, der Pole verschiedener Einzelzellen verbindet, oder als eine so genannte Zellenverbinderplatine, welche mit Verbindungselementen zur Verbindung von Polen verschiedener Einzelzellen versehen ist, ausgebildet.For the electrical connection of the individual cells, an electrical contacting element is arranged on each pole. Here, the contacting element is formed, for example, as a cell connector connecting poles of various single cells, or as a so-called cell connector board provided with connection elements for connecting poles of different single cells.
Die Einzelzellen der Batterie sind bevorzugt mittels der Zeiienverbinder an der Wärmeleitplatte befestigt. Dazu sind die Pole der Einzelzellen mit den Zellenverbindern beispielsweise verschweißt oder verschraubt, wodurch die Einzelzellen einfach und sicher an der Wärmeleitplatte positioniert und fixiert sind. Durch die über das Formteil und die Wärmeleitplatte hinausragenden Pole der Einzelzellen ist eine Positionierung und Ausrichtung der Einzelzellen in den Aussparungen des Formteiles und der Wärmeleitplatte bei der Montage ermöglicht, so dass ein zusätzlicher Einsatz oder andere Komponenten zur Positionierung und Ausrichtung der Einzelzellen zur Herstellung des Zellenverbundes nicht erforderlich sind. Darüber hinaus ist durch die Verwendung der Wärmeleitplatte als Kühlvorrichtung und Montage- bzw. Positionier- sowie Halteelement ein kostengünstiger, Bauraum optimierter, thermisch belastbarer und/oder mechanisch belastbarer Zellenverbund ermöglicht.The individual cells of the battery are preferably fastened by means of the Zeiienverbinder on the heat conducting plate. For this purpose, the poles of the individual cells with the cell connectors, for example, welded or screwed, whereby the single cells are easily and safely positioned and fixed to the heat conduction. By over the molding and the heat conducting plate protruding poles of the individual cells positioning and alignment of the individual cells in the recesses of the molded part and the heat conducting plate during assembly allows, so that an additional use or other components for positioning and alignment of the individual cells for producing the cell composite are not required. In addition, a cost-effective, space-optimized, thermally resilient and / or mechanically loadable cell composite is made possible by the use of the heat conducting plate as a cooling device and mounting or positioning and holding element.
Für eine Sicherstellung der elektrischen Isolation zwischen Einzelzellen und anderen im Batteriegehäuse angeordneten Bauteilen können die Zwischenräume darüber hinaus mit einer wärmeleitfähigen und elektrisch isolierenden Vergussmasse und/oder Schaum ausgefüllt sein.To ensure the electrical insulation between individual cells and other components arranged in the battery housing, the interspaces may also be filled with a thermally conductive and electrically insulating potting compound and / or foam.
Die erfindungsgemäße Batterie, insbesondere eine Fahrzeugbatterie, ist in einem Fahrzeug mit Hybridantrieb und/oder in einem mit Brennstoffzellen betriebenen Fahrzeug, insbesondere in einem Kraftfahrzeug zur Personenbeförderung, einsetzbar.The battery according to the invention, in particular a vehicle battery, can be used in a vehicle with hybrid drive and / or in a vehicle powered by fuel cells, in particular in a motor vehicle for transporting persons.
Ausführungsbeispiele der Erfindung werden anhand von Zeichnungen näher erläutert.Embodiments of the invention will be explained in more detail with reference to drawings.
Dabei zeigen:Showing:
Fig. 1 schematisch perspektivisch eine Explosionsdarstellung einer als Rundzelle ausgeführten Einzelzelle mit aufsetzbarem elektrisch isolierenden Formteil nach dem Stand der Technik in Explosionsdarstellung,1 shows a perspective exploded view of a single-cell cell designed as a round cell with a plug-in electrically insulating molded part according to the prior art in an exploded view,
Fig. 2 schematisch und perspektivisch eine Explosionsdarstellung einer erfindungsgemäßen Batterie mit einem elektrisch isolierenden Formteil für mehrere Einzelzellen,2 schematically and in perspective an exploded view of a battery according to the invention with an electrically insulating molding for a plurality of single cells,
Fig. 3 schematisch eine Explosionsdarstellung eines Zellverbundes mit kopfseitig angeordnetem Formteil und einer Wärmeleitplatte, und3 schematically shows an exploded view of a cell assembly with a top side arranged molding and a heat conducting, and
Fig. 4 eine Schnittdarstellung der erfindungsgemäßen Batterie im montierten Zustand. Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Fig. 4 is a sectional view of the battery according to the invention in the mounted state. Corresponding parts are provided in all figures with the same reference numerals.
In Figur 1 ist eine Explosionsdarstellung einer als Rundzelle ausgeführten Einzelzelle 1 nach dem Stand der Technik dargestellt. Dabei ist auf Pole 2 der Einzelzelle 1 ein Formteil 3 anordbar. Das Formteil 3 liegt direkt an den Polen 2 an und umschließt diese, wodurch die Pole 2 in deren Umfang elektrisch isoliert sind. Dabei umgibt das Formteil 3 ein Paar von Polen 2 einer jeweiligen Einzelzelle 1.1 shows an exploded view of an executed as a round cell single cell 1 according to the prior art. It is on pole 2 of the single cell 1, a molded part 3 can be arranged. The molded part 3 is directly against the poles 2 and encloses them, whereby the poles 2 are electrically insulated in the circumference thereof. In this case, the molded part 3 surrounds a pair of poles 2 of a respective single cell 1.
Das Formteil 3 ist aus einem elektrisch isolierenden Werkstoff, insbesondere Kunststoff, geformt.The molded part 3 is formed from an electrically insulating material, in particular plastic.
Die Einzelzelle 1 ist beispielsweise als Rundzelle ausgeführt, die eine Ummantelung 1.1 , beispielsweise aus Aluminium, aufweist. Die Ummantelung 1.1 weist an sich gegenüberliegenden Seiten wabenförmige Segmente 1.1.1 auf.The single cell 1 is designed for example as a round cell, which has a jacket 1.1, for example made of aluminum. The casing 1.1 has honeycomb segments 1.1.1 on opposite sides.
In Figur 2 ist perspektivisch eine Explosionsdarstellung der erfindungsgemäßen Batterie 4 dargestellt.FIG. 2 shows in perspective an exploded view of the battery 4 according to the invention.
Dabei umfasst die Batterie 4 ein Batteriegehäuse 5, in welches ein aus einer Vielzahl von Einzelzellen 1 gebildeter Zellenverbund 6 angeordnet ist. Die Einzelzellen 1 sind beispielsweise als Rundzellen ausgeführt, die eine Ummantelung 1.1 , beispielsweise aus Aluminium, aufweisen. Die Ummantelung 1.1 weist an sich gegenüberliegenden Seiten wabenförmige Segmente 1.1.1 auf. Durch die annähernd runde Ausbildung der Einzellen 1 ist eine Grundfläche des Batteriegehäuses 5 bauraumoptimiert genutzt.In this case, the battery 4 comprises a battery housing 5, in which a cell assembly 6 formed from a plurality of individual cells 1 is arranged. The individual cells 1 are designed, for example, as round cells, which have a jacket 1.1, for example made of aluminum. The casing 1.1 has honeycomb segments 1.1.1 on opposite sides. Due to the approximately round design of Einzellen 1 a base of the battery case 5 is used space-optimized.
Zur Abführung einer von den Einzelzellen 1 bei Laden und Entladen erzeugten Wärme ist beispielsweise kopfseitig an den Einzelzellen 1 eine Wärmeleitplatte 7 angeordnet. Dazu weist die Wärmeleitplatte 7 zu den Polen 2 der Einzelzellen 1 , in Figur 3 dargestellte, korrespondierende Aussparungen 7.1 auf.To dissipate a heat generated by the individual cells 1 during charging and discharging, for example, a heat-conducting plate 7 is arranged on the head side of the individual cells 1. For this purpose, the heat conducting plate 7 to the poles 2 of the individual cells 1, shown in Figure 3, corresponding recesses 7.1.
Zwischen den Einzelzellen 1 und der Wärmeleitplatte 7 ist erfindungsgemäß ein alle Pole 2 der Einzelzellen 1 von der Wärmeleitplatte 7 elektrisch isolierendes und alle Pole 2 der Einzelzeileπ i mit der Wärmeleitplatte 7 thermisch koppelndes Formteil 3 angeordnet. Das Formteil 3 weist mit den Polen 2 der Einzelzellen 1 korrespondierende Ausformungen 3.1 , z. B. Erhebungen oder Ausbuchtungen, in die einer der Pole 2 der jeweiligen Einzelzelle 1 eingreift, und/oder Aussparungen 3.2, z. B. in Form von Durchgangslöchern, auf, durch die der andere Pole 2 der jeweiligen Einzelzelle 1 hindurchragt. Dabei weist das Formteil 3 eine der Anzahl der Pole 2 entsprechende Anzahl von Ausformungen 3.1 und/oder Aussparungen 3.2 auf.Between the individual cells 1 and the heat-conducting plate 7, according to the invention, an all pole 2 of the individual cells 1 is electrically insulated from the heat-conducting plate 7 and all the poles 2 of the individual line 1 are thermally coupled to the heat-conducting plate 7. The molded part 3 has with the poles 2 of the individual cells 1 corresponding formations 3.1, z. B. elevations or bulges, in which one of the poles 2 of the respective single cell 1 engages, and / or recesses 3.2, z. B. in the form of Through holes, on, through which the other pole 2 of the respective single cell 1 protrudes. In this case, the molding 3 has a number of poles 2 corresponding number of formations 3.1 and / or recesses 3.2.
Die Einzelzellen 1 , insbesondere Pole 2 verschiedener Einzelzellen 1 , sind mittels Zellenverbindern 8 elektrisch, insbesondere parallel und/oder seriell, miteinander verbunden oder verschaltet.The individual cells 1, in particular poles 2 of different individual cells 1, are electrically interconnected or interconnected by means of cell connectors 8, in particular in parallel and / or in series.
Darüber hinaus sind die Einzelzellen 1 mittels der Zellenverbinder 8 vorteilhaft an der Wärmeleitplatte 7 befestigt bzw. vorgespannt. Dazu sind die Pole 2 der Einzelzellen 1 mit den Zellenverbindern 8 beispielsweise verschweißt oder verschraubt, wodurch die Einzelzellen 1 einfach und sicher an der Wärmeleitplatte 7 positioniert und fixiert sind. Gehäuseinnenseitig kann der Zellenverbund 6 mit kopfseitig angeordneter Wärmeleitplatte 7 darüber hinaus mit einer Batterieelektronik 9 verbunden sein, an welcher ein Stecker 10, insbesondere ein Hochvolt-Stecker, zum Anschluss der Batterie 4, beispielsweise an ein Spannungsnetz eines Fahrzeuges, angeordnet ist.In addition, the individual cells 1 are advantageously fastened or prestressed by means of the cell connectors 8 on the heat-conducting plate 7. For this purpose, the poles 2 of the individual cells 1 are welded or screwed to the cell connectors 8, for example, so that the individual cells 1 are simply and securely positioned and fixed on the heat-conducting plate 7. On the inside of the housing, the cell assembly 6 with the heat-conducting plate 7 arranged on the side can also be connected to battery electronics 9, to which a plug 10, in particular a high-voltage plug, for connecting the battery 4, for example to a voltage network of a vehicle, is arranged.
Um die Batterie 4 vor äußeren Einflüssen, insbesondere vor Nässe zu schützen, ist das Batteriegehäuse 5 mit einem Gehäusedeckel 5.1 abdeckbar. Dabei ist der Gehäusedeckel 5.1 an das Batteriegehäuse 5 mittels Befestigungselementen 11, insbesondere Schrauben, fixiert und gehalten. Alternativ zur Schraubverbindung kann auch eine Clips- oder Rastverbindung vorgesehen sein, durch die der Gehäusedeckel 5.1 an dem Batteriegehäuse 5 befestigbar ist.In order to protect the battery 4 from external influences, in particular from moisture, the battery case 5 can be covered with a housing cover 5.1. In this case, the housing cover 5.1 is fixed and held on the battery housing 5 by means of fastening elements 11, in particular screws. As an alternative to the screw connection, it is also possible to provide a clip or latching connection by means of which the housing cover 5.1 can be fastened to the battery housing 5.
Dabei greifen die Befestigungselemente 11 in offene Enden 12 von innenwandig am Gehäuse 5 angeordneten Führungsnuten 13 im montierten Zustand der Batterie 4 ein. Zur Führung der Befestigungselemente 11 sind die Wärmeleitplatte 7 und das Formteil 3 randseitig mit einer der Anzahl der Befestigungselemente 11 entsprechenden Anzahl von Ausnehmungen 15 versehen. Dabei korrespondieren die Ausnehmungen 15 mit den innenwandig im Gehäuse 5 angeordneten Führungsnuten 13.In this case, the fasteners 11 engage in open ends 12 of the inner wall of the housing 5 arranged guide grooves 13 in the assembled state of the battery 4 a. To guide the fastening elements 11, the heat-conducting plate 7 and the molded part 3 are provided on the edge side with a number of fastening elements 11 corresponding number of recesses 15. In this case, the recesses 15 correspond to the inner walls in the housing 5 arranged guide 13th
Die erfindungsgemäße Batterie 4, insbesondere eine Fahrzeugbatterie, ist in einem Fahrzeug mit Hybridantrieb und/oder in einem mit Brennstoffzellen betriebenen Fahrzeug, insbesondere für ein Kraftfahrzeug zur Personenbeförderung, einsetzbar. Figur 3 zeigt eine Explosionsdarstellung des aus den Rund- oder Einzelzellen 1 gebildeten Zellenverbundes 6. Je nach Anwendung sind die Einzelzellen 1 parallel und/oder seriell elektrisch miteinander verschaltet.The battery 4 according to the invention, in particular a vehicle battery, can be used in a vehicle with hybrid drive and / or in a vehicle powered by fuel cells, in particular for a motor vehicle for transporting persons. FIG. 3 shows an exploded view of the cell network 6 formed from the round or single cells 1. Depending on the application, the individual cells 1 are electrically interconnected in parallel and / or in series.
Vorzugsweise ist auf die Pole 2 vor Einführen der Einzelzellen 1 in die Aussparungen 7.1 der Wärmeleitplatte 7 das Formteil 3 aufsetzbar und anordbar. Dabei dient das Formteil 3 einer Sicherstellung einer elektrischen Isolation zwischen Wärmeleitplatte 7 und Einzelzellen 1.Preferably, the molded part 3 can be placed and arranged on the poles 2 prior to insertion of the individual cells 1 into the recesses 7.1 of the heat-conducting plate 7. The molded part 3 serves to ensure electrical insulation between the heat-conducting plate 7 and the individual cells 1.
Hierzu weist das Formteil 3 die Aussparungen 3.1 in Form von Durchgangslöchern und die Ausformungen 3.2 auf. Das Formteil 3 ist derart ausgebildet, dass es eine weitgehend plattenförmige Fläche A aufweist, die direkt auf einer Zellenoberseite 1.2 der Einzelzelle 1 aufliegt. Im Bereich der Pole 2 weist das Formteil 3 ausgeformte Strukturen oder Ausformungen 3.2 auf, in denen jeweils zumindest eine Aussparung 3.1 angeordnet ist. Dabei sind Paare von Polen 2 in deren Umfang vollständig von den Ausformungen 3.2 umschlossen. D.h. je Polpaar umfasst das Formteil eine Ausformung 3.2 mit einer Aussparung 3.1. Dadurch sind die Einzelzellen 1 des Zellverbundes 6, insbesondere die Pole 2 einer jeweiligen Einzelzelle 1 vorteilhaft gegenüber der Wärmeleitplatte 7 elektrisch isoliert. Die Aussparungen 7.1 der Wärmeleitplatte 7 korrespondieren auf vorteilhafte Weise mit den Ausformungen 3.2 des Formteiles 3.For this purpose, the molded part 3, the recesses 3.1 in the form of through holes and the formations 3.2. The molded part 3 is designed such that it has a substantially plate-shaped surface A, which rests directly on a cell top 1.2 of the single cell 1. In the region of the poles 2, the molded part 3 has formed structures or protrusions 3.2, in each of which at least one recess 3.1 is arranged. In this case, pairs of poles 2 are completely enclosed in their circumference by the formations 3.2. That each pole pair, the molding comprises a molding 3.2 with a recess 3.1. As a result, the individual cells 1 of the cell assembly 6, in particular the poles 2 of a respective individual cell 1, are advantageously electrically insulated from the heat-conducting plate 7. The recesses 7.1 of the heat conducting plate 7 correspond in an advantageous manner to the formations 3.2 of the molded part 3.
Das Formteil 3 ist vorteilhaft als ein Umformteil, insbesondere als ein Gussteil, Spritzgussteil, Fließpressteil ausgeführt. Ferner weist das Formteil 3 eine besonders gute Wärmeleitfähigkeit auf, wodurch die von den Einzelzellen 1 beim Laden und Entladen erzeugte Wärme auch über die Pole 2 abgeführt und der Wärmeleitplatte 7 zugeführt werden kann.The molded part 3 is advantageously designed as a formed part, in particular as a casting, injection molded part, extruded part. Further, the molded part 3 has a particularly good thermal conductivity, whereby the heat generated by the individual cells 1 during charging and discharging can also be dissipated via the poles 2 and the heat-conducting plate 7 can be supplied.
Um die Wärmeleitfähigkeit des Formteiles 3 zu erhöhen, kann dieses in einer möglichen Ausführungsform mit besonders wärmeleitfähigen Füllstoffen versehen sein. Beispielsweise kann das Formteil 3 im Inneren aus einem wärmeleitfähigen Material gebildet sein, das außen von einem elektrisch isolierenden Material umgeben ist. Beispielsweise ist das Formteil 3 aus Kunststoff mit im Inneren angeordnetem wärmeleitfähigem Material gebildet. Als mögliche Kunststoffe zur Bildung des Formteils können beispielsweise Polyurethan, Epoxydharze oder Silikone verwendet werden. Bevorzugt ist das Formteil 3 in einer Weiterbildung der Erfindung besonders flexibel und/oder elastisch ausgeführt. Hierdurch können Bauteiltoleranzen sowie Wärmedehnungen ausgeglichen werden. In einer möglichen Ausführungsform ist das Formteil 3 an der Wärmeleitplatte 7 form-, kraft- und/oder stoffschlüssig befestigbar, insbesondere klebbar. Ferner kann das Formteil 3 in einem Anspritzverfahren direkt auf die Wärmeleitplatte 7 aufgebracht sein.In order to increase the thermal conductivity of the molded part 3, this may be provided in a possible embodiment with particularly thermally conductive fillers. For example, the molded part 3 may be formed in the interior of a thermally conductive material which is externally surrounded by an electrically insulating material. For example, the molded part 3 is made of plastic with thermally conductive material arranged in the interior. As possible plastics for the formation of the molding, for example, polyurethane, epoxy resins or silicones may be used. Preferably, the molded part 3 is executed in a development of the invention particularly flexible and / or elastic. As a result, component tolerances and thermal expansion can be compensated. In one possible embodiment, the molded part 3 can be fastened to the heat-conducting plate 7 in a positive, force and / or materially bonded manner, in particular adhesively. Furthermore, the molded part 3 can be applied directly to the heat-conducting plate 7 in a Anspritzverfahren.
Um die Einzelzellen 1 seriell und/oder parallel elektrisch miteinander zu verbinden, ist auf einem Pol 2 angrenzender Einzelzellen 1 ein elektrisches Kontaktierungselement in Form der Zellenverbinder 8 angeordnet.In order to electrically connect the individual cells 1 to one another in series and / or in parallel, an electrical contacting element in the form of the cell connectors 8 is arranged on a pole 2 of adjacent individual cells 1.
Die Einzelzellen 1 sind bevorzugt mittels der Zellenverbinder 8 an der Wärmeleitplatte 7 befestigt. Dazu sind die Zellenverbinder 8 mit dem jeweiligen Pol 2 beispielsweise verschweißt oder verspannt oder verschraubt. Durch eine derartige Befestigung sind die Einzelzellen 1 einfach und sicher an der Wärmeleitplatte 7 positioniert und fixiert.The individual cells 1 are preferably fastened to the heat-conducting plate 7 by means of the cell connectors 8. For this purpose, the cell connector 8 with the respective pole 2, for example, welded or braced or screwed. By such attachment, the single cells 1 are easily and securely positioned and fixed to the heat conducting plate 7.
In Figur 4 ist eine Schnittdarstellung der erfindungsgemäßen Batterie 4 mit Batteriegehäuse 5 und Gehäusedeckel 5.1 dargestellt. Die in dem Batteriegehäuse 5 mit deren Längsachsen parallel zueinander angeordneten Einzelzellen 1 sind als Rundzellen ausgebildet.FIG. 4 shows a sectional view of the battery 4 according to the invention with the battery housing 5 and the housing cover 5.1. The individual cells 1 arranged parallel to one another in the battery housing 5 with their longitudinal axes are designed as round cells.
In dem Batteriegehäuse 5 ist zwischen dem Zellenverbund 6 und demIn the battery case 5 is between the cell assembly 6 and the
Gehäusedeckel 5.1 die Batterieelektronik 9 angeordnet. Der Stecker 10 ist hierbei derart angeordnet, dass sich dieser außerhalb des Gehäuses 5 befindet.Housing cover 5.1, the battery electronics 9 is arranged. The plug 10 is in this case arranged such that it is outside the housing 5.
Zwischen Einzelzellen 1 und Wärmeleitplatte 7 ist das Formteil 3 angeordnet. Das Formteil 3 dient sowohl der elektrischen Isolation zwischen den aus Einzelzellen 1 gebildeten Zellenverbund 6 und der Wärmeleitplatte 7 als auch der Wärmeableitung.Between single cells 1 and heat-conducting plate 7, the molded part 3 is arranged. The molded part 3 serves both the electrical insulation between the cell assembly 6 formed from individual cells 1 and the heat conducting plate 7 and the heat dissipation.
Die Wärmeleitplatte 7 weist Anschlusselemente 14 auf, an die beispielsweise ein Klimakreislauf einer Klimaanlage des Fahrzeuges angeschlossen ist. Die Wärmeleitplatte 7 wird von dem Kältemittel des Klimakreislaufes durchströmt, wodurch bei Laden und Entladen der Einzelzellen 1 entstehende Wärme in vorteilhafter Weise abführbar ist.The heat-conducting plate 7 has connecting elements 14 to which, for example, an air conditioning circuit of an air conditioning system of the vehicle is connected. The heat-conducting plate 7 is flowed through by the refrigerant of the air conditioning circuit, whereby heat generated during charging and discharging of the individual cells 1 can be dissipated in an advantageous manner.
Um die Einzelzellen 1 seriell und/oder parallel elektrisch miteinander zu verschalten, sind auf Pole 2, beispielsweise einander angrenzender Einzelzellen 1 , Kontaktierungselemente in Form von Zellenverbindern 8 angeordnet. Die Zellenverbinder 8 dienen darüber hinaus einer Befestigung der Einzelzellen 1 an der Wärmeleitplatte 7. Hierzu ragen die Pole 2 einer jeden Einzelzelle 1 durch die Aussparungen 3.1 des Formteiles 3 sowie über die Aussparungen 7.1 der Wärmeleitplatte 7 hindurch. Der Zellenverbinder 8 wird mit den Polen 2 beispielsweise einander angrenzender Einzelzellen 1 verschweißt oder verschraubt. Durch das Verschweißen oder Verschrauben sind die Einzelzellen 1 einfach und sicher an der Wärmeleitplatte 7 positioniert und fixiert.In order to interconnect the individual cells 1 in series and / or in parallel with one another electrically, contacting elements in the form of cell connectors 8 are arranged on poles 2, for example adjacent single cells 1. In addition, the cell connectors 8 serve to secure the individual cells 1 to the heat-conducting plate 7. For this purpose, the poles 2 of each individual cell 1 project through the Recesses 3.1 of the molded part 3 and over the recesses 7.1 of the heat conducting 7 therethrough. The cell connector 8 is welded or screwed to the poles 2, for example, of adjacent individual cells 1. By welding or screwing the single cells 1 are easily and securely positioned and fixed to the heat conducting plate 7.
Darüber hinaus können Zwischenräume der Einzelzellen 1 sowie Zwischenräume weiterer im Batteriegehäuse 5 angeordneter Bauteile mit einer elektrisch isolierenden und wärmeleitfähigen Vergussmasse und/oder Schaum ausgefüllt werden. In addition, gaps between the individual cells 1 and spaces between further components arranged in the battery housing 5 can be filled with an electrically insulating and thermally conductive potting compound and / or foam.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
Einzelzellesingle cell
1.1 Ummantelung1.1 sheathing
1.1.1 wabenförmige Segmente1.1.1 honeycomb segments
1.2 Zellenoberseite1.2 cell top
Polpole
Formteilmolding
3.1 Aussparungen3.1 recesses
3.2 Ausformungen3.2 formations
Batteriebattery
Gehäusecasing
5.1 Gehäusedeckel5.1 housing cover
Zellenverbundcell assembly
Wärmeleitplatteheat conduction
7.1 Aussparung7.1 recess
Zellenverbindercell connector
Batterieelektronikbattery electronics
Steckerplug
Befestigungselemente offene EndenFasteners open ends
Führungsnutguide
Anschlusselemente connection elements

Claims

Patentansprüche claims
1. Batterie (4) mit einem Batteriegehäuse (5) und einer Wärmeleitplatte (7) zum Temperieren der Batterie (4), wobei die Batterie (4) mehrere parallel und/oder seriell miteinander verschaltete Einzelzellen (1) aufweist, die zu einem Zellenverbund (6) zusammengefasst und Wärme leitend mit der Wärmeleitplatte (7) verbunden sind, wobei die Wärmeleitplatte (7) im Bereich der Pole (2) der Einzelzellen (1) Aussparungen (7.1) aufweist, durch welche die Pole (2) hindurchragen, wobei die Einzelzellen (1) und die Wärmeleitplatte (7) thermisch miteinander gekoppelt und elektrisch voneinander isoliert sind, dadurch gekennzeichnet, dass zwischen den Einzelzellen (1) und der Wärmeleitplatte (7) ein wärmeleitfähiges und elektrisch isolierendes Formteil angeordnet ist.1. Battery (4) with a battery housing (5) and a heat conducting plate (7) for tempering the battery (4), wherein the battery (4) has a plurality of parallel and / or serially interconnected individual cells (1), which form a cell composite (6) summarized and heat conductively connected to the heat conducting plate (7), wherein the heat conducting plate (7) in the region of the poles (2) of the individual cells (1) recesses (7.1) through which the poles (2) protrude, wherein the individual cells (1) and the heat-conducting plate (7) are thermally coupled to each other and electrically isolated from each other, characterized in that between the individual cells (1) and the heat conducting plate (7) a thermally conductive and electrically insulating molding is arranged.
2. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass das Formteil (3) als ein Umformteil, insbesondere ein Gussteil, ein Pressteil, ein Strang- oder Fließpressteil ausgebildet ist.2. Battery according to claim 1, characterized in that the molded part (3) is formed as a forming part, in particular a casting, a pressing part, a strand or extrusion part.
3. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass das Formteil (3) aus einem wärmeleitfähigen und elektrisch isolierenden Material, insbesondere aus einem wärmeleitfähigen Stoff, der mit einem elektrisch isolierenden Material versehen ist, z. B. einer Kunststoffschicht aus Polyimid, gebildet ist.3. Battery according to claim 1, characterized in that the molded part (3) made of a thermally conductive and electrically insulating material, in particular of a thermally conductive material which is provided with an electrically insulating material, for. B. a plastic layer of polyimide is formed.
4. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass das Formteil (3) an der Wärmeleitplatte (7) form-, kraft- und/oder stoffschlüssig befestigt ist.4. Battery according to claim 1, characterized in that the molded part (3) on the heat conducting plate (7) is positively, positively and / or materially secured.
5. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass das Formteil (3) und die Wärmeleitplatte (7) weitgehend miteinander korrespondierende Abmessungen und/oder Formen aufweisen.5. Battery according to claim 1, characterized in that the molded part (3) and the heat-conducting plate (7) have substantially mutually corresponding dimensions and / or shapes.
6. Batterie nach Anspruch 5, dadurch gekennzeichnet, dass die Abmessungen des Formteils (3), insbesondere deren Breite und Länge weitgehend den Abmessungen der Wärmeleitplatte (7) entsprechen oder kleiner sind.6. Battery according to claim 5, characterized in that the dimensions of the molded part (3), in particular their width and length largely correspond to the dimensions of the heat conducting plate (7) or are smaller.
7. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass das Formteil (3) mit zu den Polen (2) der Einzelzellen (1) korrespondierenden Aussparungen (3.1) und/oder Ausformungen (3.2) versehen ist.7. Battery according to claim 1, characterized in that the molded part (3) with the poles (2) of the individual cells (1) corresponding recesses (3.1) and / or protrusions (3.2) is provided.
8. Batterie nach Anspruch 7, dadurch gekennzeichnet, dass die Wärmeleitplatte (7) mit zu den Ausformungen (3.2) des Formteils (3) korrespondierenden Aussparungen (7.1) versehen ist.8. Battery according to claim 7, characterized in that the heat-conducting plate (7) with the formations (3.2) of the molded part (3) corresponding recesses (7.1) is provided.
9. Batterie nach Anspruch 8, dadurch gekennzeichnet, dass die Zellenverbinder (8) in die Aussparungen (7.1) der Wärmeleitplatte (7) auf der vom Zellenverbund (6) abgewandten Seiten der Wärmeleitplatte (7) angeordnet sind.9. Battery according to claim 8, characterized in that the cell connectors (8) in the recesses (7.1) of the heat conducting plate (7) on the side facing away from the cell assembly (6) sides of the heat conducting plate (7) are arranged.
10. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass die Wärmeleitplatte (7) und/oder das Formteil (3) randseitig eine Anzahl von Ausnehmungen (15) aufweist.10. Battery according to claim 1, characterized in that the heat-conducting plate (7) and / or the molded part (3) at the edge has a number of recesses (15).
11. Batterie nach Anspruch 10, dadurch gekennzeichnet, dass das Batteriegehäuse (5) mit zu den Ausnehmungen (15) korrespondierenden Führungsnuten (13) versehen ist.11. Battery according to claim 10, characterized in that the battery housing (5) is provided with guide grooves (13) corresponding to the recesses (15).
12. Batterie nach Anspruch 11 , dadurch gekennzeichnet, dass die Führungsnuten (13) zumindest zum offenen Ende des Batteriegehäuses (5) offen ausgebildet sind.12. Battery according to claim 11, characterized in that the guide grooves (13) are open at least to the open end of the battery case (5).
13. Batterie nach Anspruch 12, dadurch gekennzeichnet, dass am Gehäusedeckel (5.1) gehaltene Befestigungsmittel (11) in das offene Ende der Führungsnuten (13) des Batteriegehäuses (5) im geschlossenen Zustand eingreifen.13. Battery according to claim 12, characterized in that the housing cover (5.1) held fastening means (11) engage in the open end of the guide grooves (13) of the battery case (5) in the closed state.
14. Batterie nach Anspruch 1, dadurch gekennzeichnet, dass14. Battery according to claim 1, characterized in that
Pole (2) verschiedener Einzelzellen (1) über Zellenverbinder (8) elektrisch miteinander verbunden sind.Pole (2) of different individual cells (1) via cell connectors (8) are electrically connected together.
15. Batterie nach Anspruch 14, dadurch gekennzeichnet, dass die Einzelzellen (1) mittels der Zellenverbinder (8) an der Wärmeleitplatte (7) befestigt sind.15. Battery according to claim 14, characterized in that the individual cells (1) by means of the cell connector (8) on the heat conducting plate (7) are attached.
16. Batterie nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass mindestens einer der Pole (2) der Einzelzelle (1) mit dem Zellenverbinder (8) verschweißt oder verschraubt ist.16. Battery according to claim 14 or 15, characterized in that at least one of the poles (2) of the single cell (1) with the cell connector (8) is welded or screwed.
17. Batterie nach Anspruch 1 , dadurch gekennzeichnet, dass die Batterie (4) als eine Fahrzeugbatterie, insbesondere für ein Fahrzeug mit Hybridantrieb oder ein mit Brennstoffzellen betriebenes Fahrzeug, einsetzbar ist. 17. Battery according to claim 1, characterized in that the battery (4) can be used as a vehicle battery, in particular for a vehicle with hybrid drive or a fuel cell powered vehicle.
PCT/EP2009/001048 2008-02-23 2009-02-14 Battery comprising a battery housing and a heat conducting plate for controlling the temperature of the battery WO2009103462A1 (en)

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