WO2010012337A1 - Battery having a thermally conductive plate, which is arranged in a battery housing, for temperature control of the battery - Google Patents

Battery having a thermally conductive plate, which is arranged in a battery housing, for temperature control of the battery Download PDF

Info

Publication number
WO2010012337A1
WO2010012337A1 PCT/EP2009/004552 EP2009004552W WO2010012337A1 WO 2010012337 A1 WO2010012337 A1 WO 2010012337A1 EP 2009004552 W EP2009004552 W EP 2009004552W WO 2010012337 A1 WO2010012337 A1 WO 2010012337A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
heat conducting
conducting plate
transmission elements
force transmission
Prior art date
Application number
PCT/EP2009/004552
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 WO2010012337A1 publication Critical patent/WO2010012337A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • H01M10/64—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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • 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
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • 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
    • H01M50/20—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to a battery with a arranged in a battery housing heat conducting plate for temperature control of the battery according to the preamble of claim 1.
  • Various methods and devices for cooling are known from the prior art. This may be, for example, an indirect cooling by means of integration of the battery in an air conditioning circuit or direct cooling of the individual cells by means of pre-cooled air, which is passed between the cells act.
  • the cooling by means of the air conditioning circuit is preferably used for space reasons.
  • a heat-conducting plate through which an air-conditioning coolant flows is arranged on the cell assembly of the individual cells.
  • a heat conducting plate for temperature control of the battery is known from the unpublished DE 102007010739.2-45.
  • the battery has a plurality of parallel and / or serially interconnected individual cells, which are heat-conductively connected to the heat conducting plate.
  • a throughflow for a heat conducting medium channel structure is arranged, wherein the heat conducting plate has over leading out connecting cross sections for the channel structure.
  • the heat conducting plate has bores in the region of the poles of the individual cells, the poles of the individual cells projecting through the bores.
  • a battery whose individual cells have a thermally conductive, extending in the longitudinal direction and the single cell comprising sheath.
  • the sheath is a sleeve whose wall thickness varies in the circumferential direction.
  • the cell cells forming a single cell are placed on a heat conducting plate, wherein the shells of the individual cells have a heat-conducting contact with the heat conducting.
  • the invention is therefore based on the object of specifying a battery with single cells, which is constructed such that electrical short circuits are avoidable or at least the probability of their occurrence is minimized or reduced.
  • the battery with a arranged in a battery housing heat conduction plate for temperature control of the battery a plurality of electrically parallel and / or serially interconnected single cells heat conductively connected to the heat conducting plate and secured by their pole contacts protruding through this.
  • the heat-conducting plate has one or more force-transmitting elements, wherein their height extent is greater than that of the pole contacts projecting through the heat-conducting plate.
  • the battery is in particular a vehicle battery, z. As a battery for a hybrid vehicle or a fuel cell vehicle.
  • a force acting from above on the battery can be distributed to the entire cell network in an advantageous manner, wherein a direct Force on one or more pole contacts avoided or the risk of an occurrence of this force is minimized, so that in turn the risk of electrical short circuits is minimized.
  • the heat-conducting plate and the force transmission elements are designed as a molded part or the force transmission elements are non-positively, material and / or positively secured to the heat conducting plate.
  • the force transmission elements are arranged longitudinally between pole rows formed from the pole contacts and / or at the edge on the heat conducting plate, so that an optimum distribution of the force is achieved.
  • the force transmission elements webs and / or pins.
  • the force transmission elements arranged peripherally on the heat conduction plate are flush with an outer contour of the heat conduction plate and / or form the edges thereof, which leads to a further improvement of the distribution of the acting force.
  • a heat-conducting foil is arranged between the individual cells and the heat-conducting plate, which has recesses for the passage of the pole contacts. This makes it possible to provide the lowest possible heat transfer resistance between the individual cells and the heat conduction.
  • a cell connector board On the cherriesleitplatte a cell connector board is arranged, which is formed of an electrically insulating material.
  • the cell connector board has separate recesses for receiving cell connectors and a passage of the power transmission elements, wherein a shape of the recesses with the cell connectors and the force transmission elements corresponds.
  • the cell connectors are sunk into the recesses from above and / or project down through them. As a result, a desired electrical shading of the individual cells can be realized in one step in an advantageous manner.
  • the heat conducting plate and the power transmission elements are formed of a thermally conductive material in order to achieve a high heat conduction.
  • the individual cells in the longitudinal direction on a thermally conductive sheath, wherein the sheath is thermally conductive connected to the heat conducting plate, so that a further improvement of the heat dissipation of the individual cells is achieved.
  • the individual cells and / or their sheath preferably have a round, triangular, quadrangular or polygonal cross-section. Furthermore, such individual cells have a high mechanical stability, so that, for example, in the event of an accident of the vehicle, a high force can be introduced into the individual cells before they are destroyed.
  • FIG. 1 is a schematic perspective view of a single cell
  • FIG. 2 is a schematic sectional view of the single cell according to FIG. 1, FIG.
  • FIG. 4 is a schematic perspective view of a cell assembly
  • FIG. 5 shows schematically an exploded view of the cell assembly according to FIG. 2,
  • FIG. 6 is a schematic sectional view of the cell assembly according to FIG. 2, and FIG
  • FIG. 7 is a schematic sectional view of the battery according to FIG. 3.
  • Figures 1 and 2 show a single cell 1 and a vertical section through it.
  • the single cell 1 has a thermally conductive sheath 1.1, which is preferably partially thickened.
  • the casing 1.1 is formed by a sleeve which is designed to dissipate heat from the single cell 1 in the longitudinal direction of the single cell 1.
  • the jacket 1.1 is preferably formed of a metal, preferably of aluminum. It can be produced in particular by a forming process, for example by extrusion, extrusion or swaging.
  • the individual cell 1 also has two pole contacts P1, P2 for electrical connection.
  • an electrical potential for. B. the negative pole
  • the single cell 1 placed on the housing 1.2 of the single cell the second pole contact P2 is electrically connected directly to the housing 1.2 and the negative pole and a housing cover 1.3 forms.
  • the other electrical potential, d. H. in this case, the positive pole, is passed through the housing cover 1.3 by means of the first pole contact P1, between the first pole contact P1 and the cover 1.3 sealing rings 1.4 are arranged, which isolate the pole contacts P1, P2 from each other and penetration of moisture and foreign substances in the Prevent single cell 1 and leakage of electrolyte from the single cell 1.
  • the first pole contact P1 is formed rivet-like in a region, so that a bulge A extending annularly around the pole contact P1 is produced. Between this bulge A and between the upper sealing ring 1.4 is a washer 1.5, in particular of metal, arranged so that the pole contact P1 is securely held in the cover 1.4.
  • the battery 2 comprises a battery housing 3, which is formed from an upper housing part and a lower housing part, a cell assembly 4 arranged in the battery housing 3, which is formed from a plurality of individual cells 1 electrically connected in series and / or in parallel according to FIG arranged in the cell assembly heat conducting 5 and arranged on the heat conducting 5 cell connector board 6 in this sunk from above cell connectors 7 for electrical connection of the pole contacts P1, P2 of the individual cells 1.
  • the heat conducting 5 is connected, for example, to a refrigerant circuit of an air conditioner flowed through by the refrigerant , Alternatively, however, a separate cooling circuit may also be provided.
  • the battery 2 may be, for example, a lithium-ion high-voltage battery.
  • electronic components of the cell voltage monitoring, the battery control and / or fuse elements are formed as an encapsulated electronic assembly 8, which is arranged on the upper side on the heat conducting 5.
  • a short circuit in addition to a failure of electrical consumers can also lead to increased risk of fire. Since acting from the top of the battery 2 force F is introduced, for example in an accident of the vehicle by a deformation of body parts in the battery 2, which can lead to the already described electrical contacting of the pole contacts P1 P2 and thus causes a short circuit, sees the Invention, that the heat conducting plate 5 has one or more power transmission elements 9, so that the top of the Battery 2 acting force F is evenly distributed and the electrical short circuit of the pole contacts P1 P2 does not take place.
  • Figures 4, 5 and 6 show the cell assembly 4 arranged on this heat conduction plate 5 and cell connector board 6 in a perspective view, an exploded view and a sectional view.
  • a heat conducting foil 10 is additionally arranged in order to produce an improved heat transfer between the individual cells 1 or their sheathing 1.1 and the heat conducting plate 5.
  • the heat-conducting foil 10 is formed from an electrically nonconductive material and preferably has an arrangement of the pole contacts P1, P2 and recesses 10.1 corresponding to these.
  • the heat-conducting foil 10 is preferably shaped in three dimensions in such a way that it corresponds to the upper side of the cell composite 4.
  • the electrical pole contacts P1, P2 of each individual cell 1 and the heat-conducting foil 10 arranged thereon are guided through openings 5.1, which are formed in the heat-conducting plate 5 as through-holes, in particular elongated holes.
  • the pole contacts P1, P2 thus protrude into the heat-conducting plate 5 or through it.
  • electrically identical and / or different pole contacts P1, P2 of the individual cells 1 are electrically connected to one another in parallel and / or in series, depending on a desired battery voltage and power.
  • the cell connector board 6 comprises on the one hand recesses 6.1 to a receptacle of the cell connector 7, which corresponds to the shape of this.
  • the cell connectors 7 are sunk in the illustrated embodiment of the invention in the recesses 6.1 of the cell connector board 6 so that they protrude down through this.
  • the cell connector board 6 has recesses 6.2 for carrying out the force transmission elements 9.
  • the power transmission elements 9 are formed as webs and / or pins and their height extent is greater than the protruding through the heat conducting plate 5 pole contacts P1, P2. That is, the power transmission elements 9 in one mounted state of the battery 2 protrude beyond the pole contacts P1, P2.
  • the heat-conducting plate 5 and the power transmission elements 9 may be formed as a molded part or the force transmission elements 9 are by means of force, material and / or positive connection techniques, such. B. by means of soldering, welding or gluing, attached to the heat conduction plate 9.
  • the power transmission elements 9 are further arranged longitudinally between the pole contacts P1, P2 of the individual cells 1 of the cell assembly 4 rows of poles and at the edge on the heat conducting plate 5.
  • the edge arranged on the power transmission elements 9 flush with an outer contour of the heat conducting 5 from or form the edge of this.
  • the longitudinally arranged between the rows of pole power transmission elements 9 are arranged such that they extend over the sheaths 1.1 of the individual cells 1, which have a very high stability by their honeycomb-shaped cross-section and thus can absorb a large force F.
  • the casing 1.1 of the individual cells 1 may also have a round, triangular, square or polygonal cross-section, so that always a high mechanical stability and a low packing size of the cell assembly 4 can be achieved.
  • the illustration of the battery 2 in the assembled state according to FIG. 7 shows that when the force F is introduced, it is first transmitted to the electronic assembly 8 and thus distributed. In a partial deformation of the assembly 8, however, there is the danger that the force F is selectively, for example, forwarded to a pole contact P1, P2. By means of the force transmission elements 9 according to the invention, however, this can be avoided, so that the force F is distributed over the entire cell composite 4 in a planar manner. LIST OF REFERENCE NUMBERS

Landscapes

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

Abstract

The invention relates to a battery (2) having a thermally conductive plate (5) which is arranged in a battery housing (3) for temperature control of the battery (2), wherein a plurality of individual cells (1) which are connected electrically in parallel and/or in series with one another are thermally conductively connected to the thermally conductive plate (5) and are mounted with their pole contacts (P1, P2) projecting through the thermally conductive plate (5). According to the invention, the thermally conductive plate (5) has one or more force transmission elements (9), whose height extent is greater than the pole contacts (P1, P2) which project through the thermally conductive plate (5).

Description

Batterie mit einer in einem Batteriegehäuse angeordneten Wärmeleitplatte zum Battery with a arranged in a battery housing heat transfer to the
Temperieren der BatterieTempering the battery
Die Erfindung betrifft eine Batterie mit einer in einem Batteriegehäuse angeordneten Wärmeleitplatte zum Temperieren der Batterie gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a battery with a arranged in a battery housing heat conducting plate for temperature control of the battery according to the preamble of claim 1.
Batterien für Fahrzeuganwendungen, insbesondere für Hybridanwendungen, bestehen aus mehreren in Reihe und/oder parallel geschalteten Einzelzellen, welche sich meist mit einer zugehörigen Elektronik und Vorrichtungen zur Kühlung in einem gemeinsamen Batteriegehäuse befinden. Aus dem Stand der Technik sind verschiedene Verfahren und Vorrichtungen zur Kühlung bekannt. Dabei kann es sich beispielsweise um eine indirekte Kühlung mittels Einbindung der Batterie in einen Klimakreislauf oder eine direkte Kühlung der Einzelzellen mittels vorgekühlter Luft, die zwischen die Zellen geleitet wird, handeln.Batteries for vehicle applications, especially for hybrid applications, consist of several series and / or parallel-connected single cells, which are usually located with associated electronics and cooling devices in a common battery case. Various methods and devices for cooling are known from the prior art. This may be, for example, an indirect cooling by means of integration of the battery in an air conditioning circuit or direct cooling of the individual cells by means of pre-cooled air, which is passed between the cells act.
Die Kühlung mittels des Klimakreislaufes wird aus Bauraumgründen vorzugsweise angewendet. Dabei ist am Zellverbund der Einzelzellen eine von einem Klima-Kühlmittel durchströmte Wärmeleitplatte angeordnet. Eine derartig gekühlte Batterie mit einer Wärmeleitplatte zum Temperieren der Batterie ist aus der nicht vorveröffentlichten DE 102007010739.2-45 bekannt. Die Batterie weist mehrere parallel und/oder seriell miteinander verschaltete Einzelzellen auf, die Wärme leitend mit der Wärmeleitplatte verbunden sind. In der Wärmeleitplatte ist eine für ein Wärmeleitmedium durchströmbare Kanalstruktur angeordnet, wobei die Wärmeleitplatte über herausführende Anschlussquerschnitte für die Kanalstruktur verfügt. Die Wärmeleitplatte weist im Bereich der Pole der Einzelzellen Bohrungen auf, wobei die Pole der Einzelzellen durch die Bohrungen hindurch ragen.The cooling by means of the air conditioning circuit is preferably used for space reasons. In this case, a heat-conducting plate through which an air-conditioning coolant flows is arranged on the cell assembly of the individual cells. Such a cooled battery with a heat conducting plate for temperature control of the battery is known from the unpublished DE 102007010739.2-45. The battery has a plurality of parallel and / or serially interconnected individual cells, which are heat-conductively connected to the heat conducting plate. In the heat conducting plate a throughflow for a heat conducting medium channel structure is arranged, wherein the heat conducting plate has over leading out connecting cross sections for the channel structure. The heat conducting plate has bores in the region of the poles of the individual cells, the poles of the individual cells projecting through the bores.
Weiterhin ist aus der nicht vorveröffentlichten DE 102007010744.9-45 eine Batterie bekannt, deren Einzelzellen eine wärmeleitfähige, sich in der Längsrichtung erstreckende und die Einzelzelle umfassende Ummantelung aufweisen. Die Ummantelung ist eine Hülse, deren Wandstärke in Umfangsrichtung unterschiedlich stark ist. Die einen Zellverbund bildenden Einzelzellen sind auf eine Wärmeleitplatte aufgesetzt angeordnet, wobei die Ummantelungen der Einzelzellen einen Wärme leitenden Kontakt zu der Wärmeleitplatte haben.Furthermore, from the unpublished DE 102007010744.9-45 a battery is known whose individual cells have a thermally conductive, extending in the longitudinal direction and the single cell comprising sheath. The sheath is a sleeve whose wall thickness varies in the circumferential direction. The cell cells forming a single cell are placed on a heat conducting plate, wherein the shells of the individual cells have a heat-conducting contact with the heat conducting.
Aus Bauraumgründen sind derartige Batterien in der Regel im Frontbereich des Fahrzeuges oder im Fahrzeugheck und damit im Crashverformungsbereich außerhalb der Sicherheitszelle, d. h. dem Fahrgastraum, angeordnet. Durch hohe auftretende Kräfte bei Unfällen besteht die Gefahr, dass das Batteriegehäuse beschädigt oder zerstört wird und die Einzelzellen mit hohen Kräften beaufschlagt werden. Dabei besteht neben der Gefahr, dass schädliches Elektrolyt und Gase aus dem Batteriegehäuse austreten, weiterhin die Gefahr, das aufgrund einer Kraftwirkung auf Polkontakte der Einzelzellen eine elektrische Kontaktierung von Polkontakten mit unterschiedlicher Polarität entsteht, woraus elektrische Kurzschlüsse resultieren können.For reasons of space such batteries are usually in the front of the vehicle or in the rear of the vehicle and thus in the crash deformation area outside the safety cell, d. H. the passenger compartment, arranged. Due to high forces occurring in accidents, there is a risk that the battery case is damaged or destroyed and the individual cells are subjected to high forces. In addition to the risk that harmful electrolyte and gases escape from the battery case, there is also the risk that due to a force on pole contacts of the individual cells electrical contact of Polkontakten arises with different polarity, resulting in electrical short circuits can result.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Batterie mit Einzelzellen anzugeben, die derart aufgebaut ist, dass elektrische Kurzschlüsse vermeidbar sind oder zumindest die Wahrscheinlichkeit des Auftretens dieser minimierbar bzw. verringerbar ist.The invention is therefore based on the object of specifying a battery with single cells, which is constructed such that electrical short circuits are avoidable or at least the probability of their occurrence is minimized or reduced.
Die Aufgabe wird erfindungsgemäß mit einer Batterie gelöst, welche die im Anspruch 1 angegebenen Merkmale aufweist.The object is achieved with a battery having the features specified in claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Bei der erfindungsgemäßen Batterie mit einer in einem Batteriegehäuse angeordneten Wärmeleitplatte zum Temperieren der Batterie sind mehrere elektrisch parallel und/oder seriell miteinander verschaltete Einzelzellen Wärme leitend mit der Wärmeleitplatte verbunden sowie mit ihren Polkontakten durch diese hindurchragend befestigt. Erfindungsgemäß weist die Wärmeleitplatte ein oder mehrere Kraftübertragungselemente auf, wobei deren Höhenausdehnung größer als die der durch die Wärmleitplatte ragenden Polkontakte ist. Die Batterie ist insbesondere eine Fahrzeugbatterie, z. B. eine Batterie für ein Fahrzeug mit Hybridantrieb oder ein Brennstoffzellen-Fahrzeug. Bei einem Unfall des Fahrzeuges kann in vorteilhafter Weise eine von oben auf die Batterie wirkende Kraft auf den gesamten Zellverbund verteilt werden, wobei eine direkte Krafteinwirkung auf einen oder mehrere Polkontakte vermieden oder die Gefahr eines Eintritts dieser Krafteinwirkung minimiert wird, so dass wiederum die Gefahr elektrischer Kurzschlüsse minimiert wird.In the battery according to the invention with a arranged in a battery housing heat conduction plate for temperature control of the battery a plurality of electrically parallel and / or serially interconnected single cells heat conductively connected to the heat conducting plate and secured by their pole contacts protruding through this. According to the invention, the heat-conducting plate has one or more force-transmitting elements, wherein their height extent is greater than that of the pole contacts projecting through the heat-conducting plate. The battery is in particular a vehicle battery, z. As a battery for a hybrid vehicle or a fuel cell vehicle. In the case of an accident of the vehicle, a force acting from above on the battery can be distributed to the entire cell network in an advantageous manner, wherein a direct Force on one or more pole contacts avoided or the risk of an occurrence of this force is minimized, so that in turn the risk of electrical short circuits is minimized.
Die Wärmeleitplatte und die Kraftübertragungselemente sind dabei als ein Formteil ausgebildet oder die Kraftübertragungselemente sind kraft-, Stoff- und/oder formschlüssig an der Wärmeleitplatte befestigt.The heat-conducting plate and the force transmission elements are designed as a molded part or the force transmission elements are non-positively, material and / or positively secured to the heat conducting plate.
Weiterhin sind die Kraftübertragungselemente längs zwischen aus den Polkontakten gebildeten Polreihen und/oder randseitig auf der Wärmeleitplatte angeordnet, so dass eine optimale Verteilung der Kraft erreicht wird. Dabei sind die Kraftübertragungselemente Stege und/oder Stifte.Furthermore, the force transmission elements are arranged longitudinally between pole rows formed from the pole contacts and / or at the edge on the heat conducting plate, so that an optimum distribution of the force is achieved. The force transmission elements webs and / or pins.
Die randseitig auf der Wärmeleitplatte angeordneten Kraftübertragungselemente schließen gemäß einer Weiterbildung der Erfindung bündig mit einer Außenkontur der Wärmeleitplatte ab und/oder bilden die Ränder dieser, was zu einer weiteren Verbesserung der Verteilung der einwirkenden Kraft führt.According to a development of the invention, the force transmission elements arranged peripherally on the heat conduction plate are flush with an outer contour of the heat conduction plate and / or form the edges thereof, which leads to a further improvement of the distribution of the acting force.
In einer vorteilhaften Ausgestaltung der Erfindung ist zwischen den Einzelzellen und der Wärmeleitplatte eine Wärmeleitfolie angeordnet, die Aussparungen zur Durchführung der Polkontakte aufweist. Dadurch ist es möglich, einen möglichst geringen Wärmeübergangswiderstand zwischen den Einzelzellen und der Wärmeleitplatte zu schaffen.In an advantageous embodiment of the invention, a heat-conducting foil is arranged between the individual cells and the heat-conducting plate, which has recesses for the passage of the pole contacts. This makes it possible to provide the lowest possible heat transfer resistance between the individual cells and the heat conduction.
Auf der Wärmeleitplatte ist eine Zellverbinderplatine angeordnet, welche aus einem elektrisch isolierenden Material gebildet ist. Die Zellverbinderplatine weist separate Aussparungen zu einer Aufnahme von Zellverbindern und einer Durchführung der Kraftübertragungselemente auf, wobei eine Form der Aussparungen mit den Zellverbindern bzw. den Kraftübertragungselementen korrespondiert. Die Zellverbinder sind von oben in die Aussparungen versenkt und/oder ragen nach unten durch diese hindurch. Dadurch kann in vorteilhafter weise eine gewünschte elektrische Verschattung der Einzelzellen in einem Arbeitsschritt realisiert werden.On the Wärmeleitplatte a cell connector board is arranged, which is formed of an electrically insulating material. The cell connector board has separate recesses for receiving cell connectors and a passage of the power transmission elements, wherein a shape of the recesses with the cell connectors and the force transmission elements corresponds. The cell connectors are sunk into the recesses from above and / or project down through them. As a result, a desired electrical shading of the individual cells can be realized in one step in an advantageous manner.
Weiterhin sind die Wärmeleitplatte und die Kraftübertragungselemente aus einem wärmeleitfähigen Material gebildet, um eine hohe Wärmeleitung zu erreichen. Zusätzlich weisen die Einzelzellen in Längsrichtung eine wärmeleitfähige Ummantelung auf, wobei die Ummantelung wärmeleitfähig mit der Wärmeleitplatte verbunden ist, so dass eine weitere Verbesserung der Wärmeabfuhr der Einzelzellen erreicht wird.Furthermore, the heat conducting plate and the power transmission elements are formed of a thermally conductive material in order to achieve a high heat conduction. In addition, the individual cells in the longitudinal direction on a thermally conductive sheath, wherein the sheath is thermally conductive connected to the heat conducting plate, so that a further improvement of the heat dissipation of the individual cells is achieved.
Um eine dichte Packung der Einzelzellen zu erzielen, d. h. einen Zellverbund mit einem geringen Raumbedarf zu schaffen, weisen die Einzelzellen und/oder deren Ummantelung vorzugsweise einen runden, dreieckigen, viereckigen oder vieleckigen Querschnitt auf. Weiterhin weisen derartige Einzelzellen eine hohe mechanische Stabilität auf, so dass beispielsweise bei einem Unfall des Fahrzeuges eine hohe Kraft in die Einzelzellen einleitbar ist, bevor diese zerstört werden.To achieve a dense packing of the single cells, d. H. To create a cell network with a small space requirement, the individual cells and / or their sheath preferably have a round, triangular, quadrangular or polygonal cross-section. Furthermore, such individual cells have a high mechanical stability, so that, for example, in the event of an accident of the vehicle, a high force can be introduced into the individual cells before they are destroyed.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand von Zeichnungen näher erläutert.Embodiments of the invention are explained in more detail below with reference to drawings.
Dabei zeigen:Showing:
Fig. 1 schematisch eine perspektivische Ansicht einer Einzelzelle,1 is a schematic perspective view of a single cell,
Fig. 2 schematisch eine Schnittdarstellung der Einzelzelle gemäß Figur 1 ,FIG. 2 is a schematic sectional view of the single cell according to FIG. 1, FIG.
Fig. 3 eine Explosionsdarstellung einer Batterie,3 is an exploded view of a battery,
Fig. 4 schematisch eine perspektivische Ansicht eines Zellverbundes,4 is a schematic perspective view of a cell assembly,
Fig. 5 schematisch eine Explosionsdarstellung des Zellverbundes gemäß Figur 2,5 shows schematically an exploded view of the cell assembly according to FIG. 2,
Fig. 6 schematisch eine Schnittdarstellung des Zellverbundes gemäß Figur 2, und6 is a schematic sectional view of the cell assembly according to FIG. 2, and FIG
Fig. 7 schematisch eine Schnittdarstellung der Batterie gemäß Figur 3.7 is a schematic sectional view of the battery according to FIG. 3.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen. Die Figuren 1 und 2 zeigen eine Einzelzelle 1 bzw. einen vertikalen Schnitt durch diese. Die Einzelzelle 1 weist eine wärmeleitfähige Ummantelung 1.1 auf, welche vorzugsweise partiell aufgedickt ist. Die Ummantelung 1.1 wird von einer Hülse gebildet, die zum Ableiten von Wärme aus der Einzelzelle 1 in Längsrichtung der Einzelzelle 1 ausgebildet ist. Die Ummantelung 1.1 ist vorzugsweise aus einem Metall, bevorzugt aus Aluminium, gebildet. Sie kann insbesondere durch einen Umformprozess, beispielsweise durch Fließpressen, Strangpressen oder Rundkneten hergestellt werden.Corresponding parts are provided in all figures with the same reference numerals. Figures 1 and 2 show a single cell 1 and a vertical section through it. The single cell 1 has a thermally conductive sheath 1.1, which is preferably partially thickened. The casing 1.1 is formed by a sleeve which is designed to dissipate heat from the single cell 1 in the longitudinal direction of the single cell 1. The jacket 1.1 is preferably formed of a metal, preferably of aluminum. It can be produced in particular by a forming process, for example by extrusion, extrusion or swaging.
Die Einzelzelle 1 weist weiterhin zwei Polkontakte P1 , P2 zum elektrischen Anschluss auf. Dabei ist ein elektrisches Potential, z. B. der Minuspol, der Einzelzelle 1 auf das Gehäuse 1.2 der Einzelzelle gelegt, wobei der zweite Polkontakt P2 direkt mit dem Gehäuse 1.2 elektrisch verbunden ist und den Minuspol sowie einen Gehäusedeckel 1.3 bildet.The individual cell 1 also has two pole contacts P1, P2 for electrical connection. In this case, an electrical potential, for. B. the negative pole, the single cell 1 placed on the housing 1.2 of the single cell, the second pole contact P2 is electrically connected directly to the housing 1.2 and the negative pole and a housing cover 1.3 forms.
Das andere elektrische Potential, d. h. in diesem Fall der Pluspol, ist mittels des ersten Polkontaktes P1 durch den Gehäusedeckel 1.3 hindurchgeführt, wobei zwischen dem ersten Polkontakt P1 und dem Deckel 1.3 Dichtringe 1.4 angeordnet sind, die die Polkontakte P1 , P2 voneinander isolieren und ein Eindringen von Feuchtigkeit und Fremdstoffen in die Einzelzelle 1 sowie ein Austreten von Elektrolyt aus der Einzelzelle 1 verhindern.The other electrical potential, d. H. in this case, the positive pole, is passed through the housing cover 1.3 by means of the first pole contact P1, between the first pole contact P1 and the cover 1.3 sealing rings 1.4 are arranged, which isolate the pole contacts P1, P2 from each other and penetration of moisture and foreign substances in the Prevent single cell 1 and leakage of electrolyte from the single cell 1.
Weiterhin ist der erste Polkontakt P1 in einem Bereich nietartig umgeformt, so dass eine ringförmig um den Polkontakt P1 verlaufende Ausbuchtung A entsteht. Zwischen dieser Ausbuchtung A und zwischen dem oberen Dichtring 1.4 ist eine Unterlegscheibe 1.5, insbesondere aus Metall, angeordnet, so dass der Polkontakt P1 sicher in dem Deckel 1.4 gehaltert ist.Furthermore, the first pole contact P1 is formed rivet-like in a region, so that a bulge A extending annularly around the pole contact P1 is produced. Between this bulge A and between the upper sealing ring 1.4 is a washer 1.5, in particular of metal, arranged so that the pole contact P1 is securely held in the cover 1.4.
Bei einer von oben auf den Polkontakt P1 wirkenden Kraft F ist es jedoch so, dass zwischen dem ersten Polkontakt P1 , zumindest mit der Ausbuchtung A dieses, und dem zweiten Polkontakt P2 ein elektrischer Kontakt entsteht, d. h. es kommt zu einem elektrischen Kurzschluss. Weiterhin kann durch eine Verschiebung der Dichtringe 1.4 Elektrolyt aus der Einzelzelle 1 austreten. Dies kann neben der Zerstörung der Einzelzelle 1 auch zu einem Ausfall einer aus mehreren dieser Einzelzellen 1 gebildeten, in Figur 3 dargestellten Batterie 2 führen, bei welcher es sich insbesondere um eine Fahrzeugbatterie, z. B. eine Batterie 2 für ein Fahrzeug mit Hybridantrieb oder ein Brennstoffzellen-Fahrzeug, handelt.In a force F acting from above on the pole contact P1, however, an electrical contact is produced between the first pole contact P1, at least with the bulge A thereof, and the second pole contact P2, ie an electrical short circuit occurs. Furthermore, can escape from the single cell 1 by a displacement of the sealing rings 1.4 electrolyte. This can result in addition to the destruction of the single cell 1 and a failure of a plurality of these individual cells 1 formed, shown in Figure 3 battery 2, which is in particular a vehicle battery, for. As a battery 2 for a vehicle with hybrid drive or a fuel cell vehicle is.
Die Batterie 2 umfasst dabei ein Batteriegehäuse 3, welches aus einem Gehäuseoberteil und einem Gehäuseunterteil gebildet ist, einen in dem Batteriegehäuse 3 angeordneten Zellverbund 4, der aus mehreren elektrisch in Reihe und/oder parallel verschalteten Einzelzellen 1 gemäß Figur 1 gebildet ist, eine kopfseitig auf dem Zellverbund angeordnete Wärmeleitplatte 5 und eine auf der Wärmeleitplatte 5 angeordnete Zellverbinderplatine 6 mit in diese von oben versenkten Zellverbindern 7 zur elektrischen Verschaltung der Polkontakte P1 , P2 der Einzelzellen 1. Die Wärmeleitplatte 5 ist dabei beispielsweise an einen Kältemittelkreislauf einer Klimaanlage angeschlossen von dem Kältemittel durchströmbar. Es kann alternativ aber auch ein separater Kühlkreislauf vorgesehen sein.In this case, the battery 2 comprises a battery housing 3, which is formed from an upper housing part and a lower housing part, a cell assembly 4 arranged in the battery housing 3, which is formed from a plurality of individual cells 1 electrically connected in series and / or in parallel according to FIG arranged in the cell assembly heat conducting 5 and arranged on the heat conducting 5 cell connector board 6 in this sunk from above cell connectors 7 for electrical connection of the pole contacts P1, P2 of the individual cells 1. The heat conducting 5 is connected, for example, to a refrigerant circuit of an air conditioner flowed through by the refrigerant , Alternatively, however, a separate cooling circuit may also be provided.
Bei der Batterie 2 kann es sich beispielsweise um eine Lithium-Ionen-Hochvolt-Batterie handeln. Diese Batterien B benötigen eine spezielle Elektronik, welche eine Zellspannung der Einzelzellen 1 überwacht und korrigiert, ein Batteriemanagementsystem, welches insbesondere eine Leistungsaufnahme und -abgäbe der Batterie 1 steuert (= Batteriesteuerung), und Sicherungselemente, welche bei Fehlfunktionen der Batterie 2 eine sichere Abtrennung dieser von einem elektrischen Netz durchführen. Im dargestellten Ausführungsbeispiel der Erfindung sind elektronische Bauelemente der Zellspannungsüberwachung, der Batteriesteuerung und/oder Sicherungselemente als eine gekapselte elektronische Baueinheit 8 ausgebildet, welche oberseitig auf der Wärmeleitplatte 5 angeordnet ist.The battery 2 may be, for example, a lithium-ion high-voltage battery. These batteries B require special electronics, which monitors and corrects a cell voltage of the individual cells 1, a battery management system, which in particular controls power consumption and output of the battery 1 (= battery control), and fuse elements which reliably isolate the battery 2 in the event of malfunction from an electrical network. In the illustrated embodiment of the invention, electronic components of the cell voltage monitoring, the battery control and / or fuse elements are formed as an encapsulated electronic assembly 8, which is arranged on the upper side on the heat conducting 5.
Besonders in einem Fahrzeug kann ein Kurzschluss neben einem Ausfall elektrischer Verbraucher auch zu erhöhter Brandgefahr führen. Da eine von oben auf die Batterie 2 wirkende Kraft F beispielsweise bei einem Unfall des Fahrzeuges durch eine Verformung von Karosserieteilen in die Batterie 2 eingeleitet wird, welche zu der bereits beschriebenen elektrischen Kontaktierung der Polkontakte P1 P2 führen kann und somit einen Kurzschluss verursacht, sieht die Erfindung vor, dass die Wärmeleitplatte 5 ein oder mehrere Kraftübertragungselemente 9 aufweist, so dass die von oben auf die Batterie 2 wirkende Kraft F gleichmäßig verteilbar ist und der elektrische Kurzschluss der Polkontakte P1 P2 nicht stattfindet.Especially in a vehicle, a short circuit in addition to a failure of electrical consumers can also lead to increased risk of fire. Since acting from the top of the battery 2 force F is introduced, for example in an accident of the vehicle by a deformation of body parts in the battery 2, which can lead to the already described electrical contacting of the pole contacts P1 P2 and thus causes a short circuit, sees the Invention, that the heat conducting plate 5 has one or more power transmission elements 9, so that the top of the Battery 2 acting force F is evenly distributed and the electrical short circuit of the pole contacts P1 P2 does not take place.
Die Figuren 4, 5 und 6 zeigen den Zellverbund 4 mit auf diesem angeordneter Wärmeleitplatte 5 und Zellverbinderplatine 6 in einer perspektivischen Ansicht, einer Explosionsdarstellung bzw. einer Schnittdarstellung.Figures 4, 5 and 6 show the cell assembly 4 arranged on this heat conduction plate 5 and cell connector board 6 in a perspective view, an exploded view and a sectional view.
Zwischen der Wärmeleitplatte 5 und dem Zellverbund 4 ist zusätzlich eine Wärmeleitfolie 10 angeordnet, um einen verbesserten Wärmeübergang zwischen den Einzelzellen 1 bzw. deren Ummantelung 1.1 und der Wärmeleitplatte 5 zu erzeugen. Die Wärmeleitfolie 10 ist aus einem elektrisch nicht leitfähigen Material gebildet und weist vorzugsweise zu einer Anordnung der Polkontakte P1 , P2 und zu diesen selbst korrespondierende Aussparungen 10.1 auf. Im dargestellten Ausführungsbeispiel ist die Wärmeleitfolie 10 vorzugsweise derart dreidimensional ausgeformt, dass sie mit der Oberseite des Zellverbundes 4 korrespondiert.Between the heat conducting plate 5 and the cell assembly 4, a heat conducting foil 10 is additionally arranged in order to produce an improved heat transfer between the individual cells 1 or their sheathing 1.1 and the heat conducting plate 5. The heat-conducting foil 10 is formed from an electrically nonconductive material and preferably has an arrangement of the pole contacts P1, P2 and recesses 10.1 corresponding to these. In the illustrated embodiment, the heat-conducting foil 10 is preferably shaped in three dimensions in such a way that it corresponds to the upper side of the cell composite 4.
Zu der Wärme leitenden Verbindung sind die elektrischen Polkontakte P1 , P2 einer jeden Einzelzelle 1 und die auf diesen angeordnete Wärmeleitfolie 10 durch Öffnungen 5.1 geführt, die in der Wärmeleitplatte 5 als Durchgangslöcher, insbesondere Langlöcher, ausgebildet sind. Die Polkontakte P1 , P2 ragen somit in die Wärmeleitplatte 5 hinein bzw. durch diese hindurch. Anhand der Zellverbinderplatine 6 und in dieser von oben versenkten Zellverbinder 7 sind elektrisch gleiche und/oder verschiedene Polkontakte P1 , P2 der Einzelzellen 1 je nach einer gewünschten Batteriespannung und - leistung parallel und/oder seriell elektrisch miteinander verschaltet.For the heat-conducting connection, the electrical pole contacts P1, P2 of each individual cell 1 and the heat-conducting foil 10 arranged thereon are guided through openings 5.1, which are formed in the heat-conducting plate 5 as through-holes, in particular elongated holes. The pole contacts P1, P2 thus protrude into the heat-conducting plate 5 or through it. On the basis of the cell connector board 6 and in this cell connector 7 sunk from above, electrically identical and / or different pole contacts P1, P2 of the individual cells 1 are electrically connected to one another in parallel and / or in series, depending on a desired battery voltage and power.
Die Zellverbinderplatine 6 umfasst zum einen Aussparungen 6.1 zu einer Aufnahme der Zellverbinder 7, die mit der Form dieser korrespondiert. Die Zellverbinder 7 sind dabei im dargestellten Ausführungsbeispiel der Erfindung derart in den Aussparungen 6.1 der Zellverbinderplatine 6 versenkt, dass sie nach unten durch diese hindurchragen. Zum anderen umfasst die Zellverbinderplatine 6 Aussparungen 6.2 zur Durchführung der Kraftübertragungselemente 9.The cell connector board 6 comprises on the one hand recesses 6.1 to a receptacle of the cell connector 7, which corresponds to the shape of this. The cell connectors 7 are sunk in the illustrated embodiment of the invention in the recesses 6.1 of the cell connector board 6 so that they protrude down through this. On the other hand, the cell connector board 6 has recesses 6.2 for carrying out the force transmission elements 9.
Die Kraftübertragungselemente 9 sind als Stege und/oder Stifte ausgebildet und ihre Höhenausdehnung ist größer als die durch die Wärmeleitplatte 5 ragenden Polkontakte P1 , P2. Das heißt, dass die Kraftübertragungselemente 9 in einem montierten Zustand der Batterie 2 über die Polkontakte P1 , P2 hinausragen. Dabei können die Wärmeleitplatte 5 und die Kraftübertragungselemente 9 als ein Formteil ausgebildet sein oder die Kraftübertragungselemente 9 sind mittels kraft-, Stoff- und/oder formschlüssiger Verbindungstechniken, z. B. mittels Löten, Schweißen oder Kleben, an der Wärmeleitplatte 9 befestigt.The power transmission elements 9 are formed as webs and / or pins and their height extent is greater than the protruding through the heat conducting plate 5 pole contacts P1, P2. That is, the power transmission elements 9 in one mounted state of the battery 2 protrude beyond the pole contacts P1, P2. In this case, the heat-conducting plate 5 and the power transmission elements 9 may be formed as a molded part or the force transmission elements 9 are by means of force, material and / or positive connection techniques, such. B. by means of soldering, welding or gluing, attached to the heat conduction plate 9.
Die Kraftübertragungselemente 9 sind weiterhin längs zwischen aus den Polkontakten P1 , P2 der Einzelzellen 1 des Zellverbundes 4 gebildeten Polreihen und randseitig auf der Wärmeleitplatte 5 angeordnet. Im dargestellten Ausführungsbeispiel der Erfindung schließen die randseitig angeordneten Kraftübertragungselemente 9 bündig mit einer Außenkontur der Wärmeleitplatte 5 ab bzw. bilden den Rand dieser. Durch eine derartige Anordnung der Kraftübertragungselemente 9 und deren Höhenausdehnung ist stets eine optimale Verteilung der von oben wirkenden Kraft F auf den Zellverbund 4 sichergestellt, ohne dass die Kraft F auf einzelne Polkontakte P1 , P2 wirkt und somit zum Kurzschluss der Einzelzellen 1 oder einem Austritt von Elektrolyt führt.The power transmission elements 9 are further arranged longitudinally between the pole contacts P1, P2 of the individual cells 1 of the cell assembly 4 rows of poles and at the edge on the heat conducting plate 5. In the illustrated embodiment of the invention, the edge arranged on the power transmission elements 9 flush with an outer contour of the heat conducting 5 from or form the edge of this. By such an arrangement of the power transmission elements 9 and their height extent an optimal distribution of the force acting from above force F is always ensured on the cell assembly 4, without the force F acts on individual pole contacts P1, P2 and thus to short circuit of the individual cells 1 or an outlet of Electrolyte leads.
Im dargestellten Ausführungsbeispiel der Erfindung sind die längs zwischen den Polreihen angeordneten Kraftübertragungselemente 9 derart angeordnet, dass diese über den Ummantelungen 1.1 der Einzelzellen 1 verlaufen, die durch ihren wabenförmigen Querschnitt eine sehr hohe Stabilität aufweisen und somit eine große Kraft F aufnehmen können. Gemäß nicht näher dargestellter Weiterbildungen der Erfindung kann die Ummantelung 1.1 der Einzelzellen 1 auch einen runden, dreieckigen, viereckigen oder vieleckigen Querschnitt aufweisen, so dass stets eine hohe mechanische Stabilität und ein geringes Packmaß des Zellverbundes 4 erzielbar sind.In the illustrated embodiment of the invention, the longitudinally arranged between the rows of pole power transmission elements 9 are arranged such that they extend over the sheaths 1.1 of the individual cells 1, which have a very high stability by their honeycomb-shaped cross-section and thus can absorb a large force F. According to non-illustrated developments of the invention, the casing 1.1 of the individual cells 1 may also have a round, triangular, square or polygonal cross-section, so that always a high mechanical stability and a low packing size of the cell assembly 4 can be achieved.
Der Darstellung der Batterie 2 im montierten Zustand gemäß Figur 7 ist zu entnehmen, dass bei einer Einleitung der Kraft F, diese zunächst auf die elektronische Baueinheit 8 übertragen und somit verteilt wird. Bei einer partiellen Verformung der Baueinheit 8 besteht jedoch die Gefahr, dass die Kraft F punktuell, beispielsweise auf einen Polkontakt P1 , P2 weitergeleitet wird. Mittels der erfindungsgemäßen Kraftübertragungselemente 9 ist dies jedoch vermeidbar, so dass die Kraft F flächig auf den gesamten Zellverbund 4 verteilt wird. BezugszeichenlisteThe illustration of the battery 2 in the assembled state according to FIG. 7 shows that when the force F is introduced, it is first transmitted to the electronic assembly 8 and thus distributed. In a partial deformation of the assembly 8, however, there is the danger that the force F is selectively, for example, forwarded to a pole contact P1, P2. By means of the force transmission elements 9 according to the invention, however, this can be avoided, so that the force F is distributed over the entire cell composite 4 in a planar manner. LIST OF REFERENCE NUMBERS
1 Einzelzelle1 single cell
1.1 Ummantelung1.1 sheathing
1.2 Gehäuse1.2 housing
1.3 Gehäusedeckel1.3 Housing cover
1.4 Dichtring1.4 sealing ring
1.5 Unterlegscheibe1.5 Washer
2 Batterie2 battery
3 Batteriegehäuse3 battery case
4 Zellverbund4 cell network
5 Wärmeleitplatte5 heat conducting plate
5.1 Öffnung5.1 opening
6 Zellverbinderplatine6 cell connector board
6.1 Aussparung6.1 recess
6.2 Aussparung6.2 recess
7 Zellverbinder7 cell connectors
8 Elektronische Baueinheit8 Electronic assembly
9 Kraftübertragungselement9 power transmission element
10 Wärmeleitfolie10 heat-conducting foil
10.1 Aussparung10.1 recess
A AusbuchtungA bulge
F KraftF force
P1 PolkontaktP1 pole contact
P2 Polkontakt P2 pole contact

Claims

Patentansprüche claims
1. Batterie (2) mit einer in einem Batteriegehäuse (3) angeordneten Wärmeleitplatte (5) zum Temperieren der Batterie (2), wobei mehrere elektrisch parallel und/oder seriell miteinander verschaltete Einzelzellen (1 ) Wärme leitend mit der Wärmeleitplatte (5) verbunden sowie mit ihren Polkontakten (P1 , P2) durch diese hindurchragend befestigt sind, dadurch gekennzeichnet, dass die Wärmeleitplatte (5) ein oder mehrere Kraftübertragungselemente (9) aufweist, wobei deren Höhenausdehnung größer als die der durch die Wärmleitplatte (5) ragenden Polkontakte (P1 , P2) ist.1. Battery (2) with a in a battery case (3) arranged heat conduction plate (5) for temperature control of the battery (2), wherein a plurality of electrically parallel and / or serially interconnected single cells (1) heat conductively connected to the heat conducting plate (5) and with their pole contacts (P1, P2) are fastened by projecting through this, characterized in that the heat conducting plate (5) one or more force transmission elements (9), wherein the height extent greater than that of the Wärmleitplatte (5) projecting pole contacts (P1 , P2).
2. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Wärmeleitplatte (5) und die Kraftübertragungselemente (9) als ein Formteil ausgebildet sind.2. Battery (2) according to claim 1, characterized in that the heat conducting plate (5) and the force transmission elements (9) are formed as a molded part.
3. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Kraftübertragungselemente (9) kraft-, Stoff- und/oder formschlüssig an der Wärmeleitplatte (5) befestigt sind.3. Battery (2) according to claim 1, characterized in that the force transmission elements (9) non-positively, material and / or positively secured to the heat conducting plate (5) are attached.
4. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Kraftübertragungselemente (9) Stege und/oder Stifte sind. 4. Battery (2) according to claim 1, characterized in that the force transmission elements (9) webs and / or pins are.
5. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Kraftübertragungselemente (9) längs zwischen aus den Polkontakten (P1 , P2) gebildeten Polreihen und/oder randseitig auf der Wärmeleitplatte (5) angeordnet sind.5. Battery (2) according to claim 1, characterized in that the force transmission elements (9) are arranged longitudinally between the pole contacts (P1, P2) formed Polreihen and / or edge on the heat conducting plate (5).
6. Batterie (2) nach Anspruch 5, dadurch gekennzeichnet, dass randseitig auf der Wärmeleitplatte (5) angeordnete Kraftübertragungselemente (9) bündig mit einer Außenkontur der Wärmeleitptatte (5) abschließen und/oder Ränder der Wärmeleitplatte (5) bilden.6. Battery (2) according to claim 5, characterized in that at the edge on the heat conducting plate (5) arranged force transmission elements (9) flush with an outer contour of the Wärmeleitptatte (5) and / or edges of the heat conducting plate (5) form.
7. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass zwischen den Einzelzellen (1 ) und der Wärmeleitplatte (5) eine Wärmeleitfolie (10) angeordnet ist.7. Battery (2) according to claim 1, characterized in that between the individual cells (1) and the heat conducting plate (5) a heat conducting foil (10) is arranged.
8. Batterie (2) nach Anspruch 7, dadurch gekennzeichnet, dass die Wärmeleitfolie (10) Aussparungen (10.1 ) zur Durchführung der Polkontakte (P1 , P2) aufweist.8. Battery (2) according to claim 7, characterized in that the heat-conducting foil (10) has recesses (10.1) for the passage of the pole contacts (P1, P2).
9. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass auf der Wärmeleitplatte (5) eine Zellverbinderplatine (6) angeordnet ist.9. Battery (2) according to claim 1, characterized in that on the heat conducting plate (5) a cell connector board (6) is arranged.
10. Batterie (2) nach Anspruch 9, dadurch gekennzeichnet, dass die Zellverbinderplatine (6) aus einem elektrisch isolierenden Material gebildet ist.10. Battery (2) according to claim 9, characterized in that the cell connector board (6) is formed of an electrically insulating material.
11. Batterie (2) nach Anspruch 9, dadurch gekennzeichnet, dass die Zellverbinderplatine (6) separate Aussparungen (6.1 , 6.2) zu einer Aufnahme von Zellverbindern (7) und zu einer Durchführung der Kraftübertragungselemente (9) aufweist. 11. Battery (2) according to claim 9, characterized in that the cell connector board (6) has separate recesses (6.1, 6.2) to a receptacle of cell connectors (7) and to a passage of the force transmission elements (9).
12. Batterie (2) nach Anspruch 11 , dadurch gekennzeichnet, dass eine Form der Aussparungen (6.1 , 6.2) mit den Zellverbindern (7) bzw. den Kraftübertragungselementen (9) korrespondiert.12. Battery (2) according to claim 11, characterized in that a shape of the recesses (6.1, 6.2) with the cell connectors (7) or the force transmission elements (9) corresponds.
13. Batterie (2) nach Anspruch 12, dadurch gekennzeichnet, dass die Zellverbinder (7) von oben in die Aussparungen (6.1 ) versenkt sind und/oder durch diese nach unten hindurchragen.13. Battery (2) according to claim 12, characterized in that the cell connectors (7) are sunk from above into the recesses (6.1) and / or project through them downwards.
14. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Wärmeleitplatte (5) und die Kraftübertragungselemente (9) aus einem wärmeleitfähigen Material gebildet sind.14. Battery (2) according to claim 1, characterized in that the heat conducting plate (5) and the force transmission elements (9) are formed of a thermally conductive material.
15. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Einzelzellen (1 ) in Längsrichtung eine wärmeleitfähige Ummantelung (1.1 ) aufweisen, wobei die Ummantelung (1.1 ) wärmeleitfähig mit der Wärmeleitplatte (5) verbunden ist.15. Battery (2) according to claim 1, characterized in that the individual cells (1) in the longitudinal direction of a thermally conductive sheath (1.1), wherein the sheath (1.1) is thermally conductive connected to the heat conducting plate (5).
16. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Ummantelung (1.1 ) der Einzelzellen (1 ) einen runden, dreieckigen, viereckigen oder vieleckigen Querschnitt aufweisen.16. Battery (2) according to claim 1, characterized in that the sheath (1.1) of the individual cells (1) have a round, triangular, quadrangular or polygonal cross-section.
17. Batterie (2) nach Anspruch 1 , dadurch gekennzeichnet, dass die Batterie (2) eine Fahrzeugbatterie, insbesondere eine Batterie (2) für ein Fahrzeug mit Hybridantrieb oder ein Brennstoffzellen-Fahrzeug ist. 17. Battery (2) according to claim 1, characterized in that the battery (2) is a vehicle battery, in particular a battery (2) for a vehicle with hybrid drive or a fuel cell vehicle.
PCT/EP2009/004552 2008-07-26 2009-06-24 Battery having a thermally conductive plate, which is arranged in a battery housing, for temperature control of the battery WO2010012337A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008034868A DE102008034868B4 (en) 2008-07-26 2008-07-26 Battery with a arranged in a battery housing heat conducting plate for tempering the battery
DE102008034868.6 2008-07-26

Publications (1)

Publication Number Publication Date
WO2010012337A1 true WO2010012337A1 (en) 2010-02-04

Family

ID=40959141

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/004552 WO2010012337A1 (en) 2008-07-26 2009-06-24 Battery having a thermally conductive plate, which is arranged in a battery housing, for temperature control of the battery

Country Status (2)

Country Link
DE (1) DE102008034868B4 (en)
WO (1) WO2010012337A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102792484A (en) * 2010-03-01 2012-11-21 奥迪股份公司 Battery for a motor vehicle
DE102012218500A1 (en) 2012-10-11 2014-04-17 Continental Automotive Gmbh Manufacturing method of device for electrically connecting electrical energy store to battery, involves providing connecting web for connecting contact elements, and connecting carrier fixed with contact element to lead frame
DE102013214617A1 (en) 2013-07-26 2015-01-29 Continental Automotive Gmbh Device for connecting a plurality of electrical energy storage devices to a battery and method for producing such a device
WO2015103173A1 (en) * 2014-01-02 2015-07-09 Johnson Controls Technology Company Micro-hybrid battery module for a vehicle
CN107275559A (en) * 2017-06-02 2017-10-20 深圳市欣旺达电气技术有限公司 Battery apparatus
US10483510B2 (en) 2017-05-16 2019-11-19 Shape Corp. Polarized battery tray for a vehicle
US10632857B2 (en) 2016-08-17 2020-04-28 Shape Corp. Battery support and protection structure for a vehicle
US10661646B2 (en) 2017-10-04 2020-05-26 Shape Corp. Battery tray floor assembly for electric vehicles
US10886513B2 (en) 2017-05-16 2021-01-05 Shape Corp. Vehicle battery tray having tub-based integration
US11088412B2 (en) 2017-09-13 2021-08-10 Shape Corp. Vehicle battery tray with tubular peripheral wall
US11155150B2 (en) 2018-03-01 2021-10-26 Shape Corp. Cooling system integrated with vehicle battery tray
US11211656B2 (en) 2017-05-16 2021-12-28 Shape Corp. Vehicle battery tray with integrated battery retention and support feature
US11214137B2 (en) 2017-01-04 2022-01-04 Shape Corp. Vehicle battery tray structure with nodal modularity
US11688910B2 (en) 2018-03-15 2023-06-27 Shape Corp. Vehicle battery tray having tub-based component

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010034082A1 (en) 2010-08-12 2012-02-16 Li-Tec Battery Gmbh Heat conducting plate with a network of flow channels, method of transporting heat and electrochemical energy storage
FR2964799B1 (en) * 2010-09-09 2013-04-05 Peugeot Citroen Automobiles Sa BATTERY COMPRISING A TEMPERATURE BALANCING PLATE
DE102016102860A1 (en) 2016-02-18 2017-08-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft battery module

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10003740C1 (en) * 2000-01-28 2001-06-13 Daimler Chrysler Ag Electric battery e.g. traction battery for electric or hybrid vehicle has cooling plate in thermal contact with cell connectors coupled between battery cell poles of series connected battery cells
GB2387019A (en) * 2002-03-30 2003-10-01 Bosch Gmbh Robert Energy storage module and electrical device
US6783886B1 (en) * 1999-11-11 2004-08-31 Makita Corporation Battery pack with an improved cooling structure
WO2008104357A1 (en) * 2007-02-27 2008-09-04 Daimler Ag Battery with a heat conducting plate
WO2008104375A2 (en) * 2007-02-27 2008-09-04 Daimler Ag Battery cell and cell group in a battery

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006010063B4 (en) * 2006-03-04 2021-09-02 Bbp Kunststoffwerk Marbach Baier Gmbh Cooling device for batteries
DE102006045564A1 (en) * 2006-09-25 2008-04-03 Behr Gmbh & Co. Kg Device for cooling electrical elements

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6783886B1 (en) * 1999-11-11 2004-08-31 Makita Corporation Battery pack with an improved cooling structure
DE10003740C1 (en) * 2000-01-28 2001-06-13 Daimler Chrysler Ag Electric battery e.g. traction battery for electric or hybrid vehicle has cooling plate in thermal contact with cell connectors coupled between battery cell poles of series connected battery cells
GB2387019A (en) * 2002-03-30 2003-10-01 Bosch Gmbh Robert Energy storage module and electrical device
WO2008104357A1 (en) * 2007-02-27 2008-09-04 Daimler Ag Battery with a heat conducting plate
WO2008104375A2 (en) * 2007-02-27 2008-09-04 Daimler Ag Battery cell and cell group in a battery

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102792484A (en) * 2010-03-01 2012-11-21 奥迪股份公司 Battery for a motor vehicle
DE102012218500A1 (en) 2012-10-11 2014-04-17 Continental Automotive Gmbh Manufacturing method of device for electrically connecting electrical energy store to battery, involves providing connecting web for connecting contact elements, and connecting carrier fixed with contact element to lead frame
DE102013214617A1 (en) 2013-07-26 2015-01-29 Continental Automotive Gmbh Device for connecting a plurality of electrical energy storage devices to a battery and method for producing such a device
WO2015103173A1 (en) * 2014-01-02 2015-07-09 Johnson Controls Technology Company Micro-hybrid battery module for a vehicle
US9997816B2 (en) 2014-01-02 2018-06-12 Johnson Controls Technology Company Micro-hybrid battery module for a vehicle
US11273697B2 (en) 2016-08-17 2022-03-15 Shape Corp. Battery support and protection structure for a vehicle
US10632857B2 (en) 2016-08-17 2020-04-28 Shape Corp. Battery support and protection structure for a vehicle
US11660950B2 (en) 2016-08-17 2023-05-30 Shape Corp. Battery support and protection structure for a vehicle
US11214137B2 (en) 2017-01-04 2022-01-04 Shape Corp. Vehicle battery tray structure with nodal modularity
US10483510B2 (en) 2017-05-16 2019-11-19 Shape Corp. Polarized battery tray for a vehicle
US10886513B2 (en) 2017-05-16 2021-01-05 Shape Corp. Vehicle battery tray having tub-based integration
US11691493B2 (en) 2017-05-16 2023-07-04 Shape Corp. Vehicle battery tray having tub-based component
US11211656B2 (en) 2017-05-16 2021-12-28 Shape Corp. Vehicle battery tray with integrated battery retention and support feature
CN107275559A (en) * 2017-06-02 2017-10-20 深圳市欣旺达电气技术有限公司 Battery apparatus
US11088412B2 (en) 2017-09-13 2021-08-10 Shape Corp. Vehicle battery tray with tubular peripheral wall
US10960748B2 (en) 2017-10-04 2021-03-30 Shape Corp. Battery tray floor assembly for electric vehicles
US11267327B2 (en) 2017-10-04 2022-03-08 Shape Corp. Battery tray floor assembly for electric vehicles
US10661646B2 (en) 2017-10-04 2020-05-26 Shape Corp. Battery tray floor assembly for electric vehicles
US11787278B2 (en) 2017-10-04 2023-10-17 Shape Corp. Battery tray floor assembly for electric vehicles
US11155150B2 (en) 2018-03-01 2021-10-26 Shape Corp. Cooling system integrated with vehicle battery tray
US11688910B2 (en) 2018-03-15 2023-06-27 Shape Corp. Vehicle battery tray having tub-based component

Also Published As

Publication number Publication date
DE102008034868B4 (en) 2011-07-07
DE102008034868A1 (en) 2010-01-28

Similar Documents

Publication Publication Date Title
DE102008034868B4 (en) Battery with a arranged in a battery housing heat conducting plate for tempering the battery
DE102008059969B4 (en) Device for cooling a battery and use of the device
EP2243178B1 (en) Battery comprising a plurality of individual cells
DE102008034699B4 (en) Battery with several battery cells
EP2831937B1 (en) Cell connector for a battery system or for a battery cell of an electrical energy store, battery and motor vehicle
EP3739660B1 (en) Battery module for a motor vehicle
WO2010012342A1 (en) Battery having a battery housing and a thermally conductive plate for temperature control of the battery
WO2009103522A1 (en) Battery comprising a heat-conducting plate arranged inside a battery case for adjusting the temperature of the battery
WO2010012341A1 (en) Battery cooling in particular for a vehicle battery
EP3235049B1 (en) A battery with cooling plate as mounting plate
DE102013220044B4 (en) Cell contacting system for an electrochemical device and method for producing a cell contacting system
DE102008059947A1 (en) Battery, particularly high power battery and vehicle battery for mild hybrid drives of motor vehicle, has heat conducting plate for maintaining temperature of battery, where heat conducting plate is arranged in battery housing
WO2011116801A1 (en) Battery consisting of a plurality of single battery cells
DE102008010824A1 (en) Battery with several single cells
DE102015210671A1 (en) Battery cell with a disposed within a second terminal first terminal
DE102010013031A1 (en) Battery e.g. lithium-ion high-voltage battery, used in e.g. hybrid car, has electrical isolating frame formed between metal sheets, and electrical isolating spacer element arranged at frame among deformed regions of sheets
DE102013019468A1 (en) Battery with a plurality of battery cells
EP3465797B1 (en) Battery with battery sections and section contact element
DE102015110308A1 (en) Battery pack for a hand-held power tool
DE102014225069A1 (en) Component for power absorption and / or force distribution in a battery cell module
DE102013015754A1 (en) Cell block for a battery
DE102021118397A1 (en) Battery with integrated busbar cooling and motor vehicle
DE102010012999A1 (en) Battery e.g. lithium ion battery for hybridized or partially hybridized drive trains in motor car, has terminal comprising electrically conducting sub components, and cells electrically contacting with each other
EP3117472B1 (en) Connector arrangement for electrically contacting arresters of an electrochemical cell
DE102013021203A1 (en) Single cell for a battery and battery

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09776823

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09776823

Country of ref document: EP

Kind code of ref document: A1