WO2013023767A1 - Cellule électrochimique accumulatrice d'énergie à boîtier métallique, procédé de fabrication d'une cellule électrochimique accumulatrice d'énergie à boîtier métallique - Google Patents

Cellule électrochimique accumulatrice d'énergie à boîtier métallique, procédé de fabrication d'une cellule électrochimique accumulatrice d'énergie à boîtier métallique Download PDF

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Publication number
WO2013023767A1
WO2013023767A1 PCT/EP2012/003411 EP2012003411W WO2013023767A1 WO 2013023767 A1 WO2013023767 A1 WO 2013023767A1 EP 2012003411 W EP2012003411 W EP 2012003411W WO 2013023767 A1 WO2013023767 A1 WO 2013023767A1
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WO
WIPO (PCT)
Prior art keywords
electrode assembly
housing
secondary cell
molding
housing molding
Prior art date
Application number
PCT/EP2012/003411
Other languages
German (de)
English (en)
Inventor
Tim Schaefer
Original Assignee
Li-Tec Battery Gmbh
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 Li-Tec Battery Gmbh filed Critical Li-Tec Battery Gmbh
Publication of WO2013023767A1 publication Critical patent/WO2013023767A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • 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
    • H01M10/06—Lead-acid accumulators
    • H01M10/12—Construction or manufacture
    • H01M10/125—Cells or batteries with wound or folded electrodes
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • Electrochemical energy storage cell with metallic housing process for producing an electrochemical
  • the present invention relates to a rechargeable electrochemical energy storage cell, hereinafter referred to as a secondary cell, for a battery.
  • a secondary cell for a battery.
  • the invention will be described in the context of lithium-ion batteries for the supply of motor vehicle drives. It should be noted that the
  • Invention can also be used regardless of the chemistry of the secondary cell or regardless of the type of powered drive.
  • Batteries with a plurality of secondary cells for supplying electrical consumers, in particular motor vehicle drives, are known from the prior art.
  • the secondary cells each have a housing, a
  • Electrode assembly for providing electrical energy and usually two current conductors on.
  • the current conductors extend at least partially out of the housing into the environment of the secondary cell.
  • the electrode assembly and the current conductors are electrically conductive
  • Claim 10 describes a battery with at least two electrochemical energy storage devices according to the invention.
  • the object is also achieved by a manufacturing method according to claim 1 1 for an electrochemical energy storage device.
  • An inventive electrochemical energy storage device hereinafter referred to as a secondary cell, has an electrode assembly.
  • the electrode assembly has at least one separator and two electrodes of different polarity.
  • the separator is arranged between two electrodes.
  • the electrode assembly is provided to provide at least temporary electrical energy.
  • the secondary cell has one, two or more current conductors.
  • a current collector is provided, at least indirectly, to be electrically conductively connected to the electrode assembly, preferably to one of the electrodes, preferably by means of a material connection, particularly preferably by means of a welded connection.
  • the secondary cell has at least two, in particular, metallic housing moldings. The housing moldings are for limiting the electrode assembly from the environment of
  • the housing moldings are also provided with one another for the in particular positive and / or material-locking connection, wherein preferably the connected housing moldings form a housing around the electrode assembly. At least one, preferably two
  • At least one of the housing moldings is provided to receive the electrode assembly in particular positive and / or non-positive.
  • the inventive design of the secondary cell whose current conductor are held by a housing molding such that an undesirable
  • An electrode assembly in the sense of the invention means a device which is used in particular for providing electrical energy.
  • the electrode assembly has at least two electrodes
  • the electrode assembly is dischargeable and rechargeable, with ions of the electrolyte's conducting electrolyte migrating through the separator.
  • ions of the electrolyte's conducting electrolyte migrating through the separator.
  • the electrode assembly has at least one so-called lateral surface, wherein the lateral surface delimits the electrode assembly to the environment or to a housing molding.
  • An electrode has a particular metallic collector foil.
  • An active electrode mass is applied to the collector foil.
  • a portion of the collector foil remains free of the active electrode mass.
  • This Area also referred to below as the arrester lug, is used in particular for electrical connection to a current conductor.
  • the trap tab extends beyond an adjacent separator.
  • a collector foil has a substantially rectangular shape.
  • the secondary cell according to the invention preferably has lithium ions. This version offers the advantage of an increased energy density of
  • Secondary cell in particular an energy density of at least 40 Wh / kg.
  • Electrode assembly more preferably at least one cathode, a compound having the formula LiMP0 4 , wherein M at least one
  • Transition metal cation of the first row of the Periodic Table of the Elements is.
  • the transition metal cation is preferably selected from the group consisting of Mn, Fe, Ni and Ti or a combination of these elements.
  • Compound preferably has an olivine structure, preferably
  • Electrode of the electrode assembly more preferably at least one cathode, a lithium manganate, preferably LiMn 2 0 4 spinel type, a lithium cobaltate, preferably LiCo0 2 , or a lithium nickelate, preferably LiNi0 2 , or a mixture of two or three of these oxides, or
  • a separator is used in particular for the complaint of two adjacent electrodes of different polarity.
  • the separator blocks electrons, but is permeable to ions.
  • the electrolyte or the conductive salt are at least partially taken up by the separator.
  • the separator is as formed thin film, more preferably having a substantially rectangular shape.
  • a separator is used which is not or only poorly electron-conducting, and which at least partially
  • the support is preferably coated on at least one side with an inorganic material.
  • an organic material is preferably used, which is preferably designed as a non-woven fabric.
  • the organic material which preferably comprises a polymer and more preferably a polyethylene terephthalate (PET), is with a
  • the coated inorganic, preferably ion-conducting material which is more preferably ion conducting in a temperature range of - 40 ° C to 200 ° C.
  • the inorganic material preferably comprises at least one compound from the group of oxides, phosphates, sulfates, titanates, silicates, aluminosilicates with at least one of the elements Zr, Al, Li, particularly preferably zirconium oxide.
  • the inorganic, ion-conducting material preferably has particles with a largest diameter below 100 nm. Such a
  • a preferred embodiment of the electrode assembly comprises a plurality of positive electrodes and a plurality of negative electrodes, wherein adjacent electrodes of different polarity are separated by a respective separator.
  • the electrodes and the separators are substantially formed as rectangular sheets and corresponding to a stack of playing cards
  • Electrode stack stacked one above the other, this arrangement being called electrode stack below.
  • a separator sheet separates two each
  • Electrode sheets of different polarity Beyond the separator sheet, the collector tabs of the adjacent electrodes extend.
  • a further preferred embodiment of the electrode assembly comprises a positive electrode and a negative electrode, wherein adjacent electrodes of different polarity are separated by a respective separator.
  • the electrodes and the separator are essentially formed as rectangular strips and placed one above the other. This arrangement is wound up into a substantially cylindrical so-called electrode winding. Beyond the separator, the arrester lugs of the two electrodes extend.
  • Ableiterfahnen a polarity are electrically connected to one of the current collector, preferably welded.
  • the first is in
  • Electrode flat winding deformed into a so-called.
  • Electrode flat winding the electrode flat winding assumes a substantially cuboidal or prismatic shape.
  • This embodiment offers the advantage that a cuboid housing can be used for the electrode flat winding, the cuboid housing being particularly suitable for the adjacent housing
  • Electrode assembly and in particular for connection to a zu
  • the current conductor is formed metallic, particularly preferably with copper and / or aluminum.
  • Electrode assembly connected, preferably with an electrode of
  • the current collector extends at least partially from a housing molding in the environment of the secondary cell.
  • the current conductor preferably has a supply contact region which extends at least partially outside a housing molding.
  • the supply contact area is for connection to a supply line
  • a lead contact region is formed substantially cylindrical and has an external thread.
  • An eye or a hook at the end of a power cable can surround the lead contact area and with a be screwed mother screwed.
  • Stromableiter a substantially plate-shaped electrode contact area, which serves in particular for contacting the electrode assembly or an electrode, preferably via the Ableiterfahnen.
  • the conductor tabs or the electrodes of one polarity are preferably bonded to the electrode contact area, particularly preferably welded.
  • the electrode contact region is arranged in the interior of the housing.
  • a substantially rectangular housing Preferably, a substantially rectangular housing.
  • Boundary surface of the electrode contact region substantially parallel to a wall of a housing molding, hereinafter called Formteilwandung arranged.
  • This embodiment has the advantage that a connection, in particular a welding of the collector lugs with this
  • this embodiment has a substantially plate-shaped
  • Electrode contact area with a substantially rectangular boundary surface within the housing offers the advantage that the number of material transitions in the current path from the electrode to the
  • Another advantage of this embodiment is the improved sealing of the housing by an optionally
  • multi-part sealing device can be pushed over the bolt and secured.
  • the supply contact area is designed as a bolt with an external thread, referred to below as a threaded bolt, a deferred supply line can be secured with a nut. This version offers the
  • a sealing device or insulation can be secured.
  • Under a housing molding in the context of the invention is a device to understand, which serves in particular:
  • the electrode assembly in particular form-fitting and / or
  • Form-fitting receiving the electrode assembly in the context of the invention is to be understood that the housing molding in particular at the same time at least one, preferably a plurality of lateral surfaces of the
  • Electrode assembly is applied.
  • Form-fitting the electrode assembly in the sense of the invention is to be understood that the housing molding in particular exerts a normal force on the electrode assembly, in particular at least a lateral surface of the electrode assembly. From the normal force on the lateral surface and the static friction between the electrode assembly touching wall or molding wall follows a force, in particular a frictional force in the plane of the lateral surface, which is encountered in particular during operation of a relative movement between the electrode assembly and housing molding. Thus, a mechanical stress and thus an aging of the electrical connection of electrode assembly and
  • clamping of the electrode assembly in the sense of the invention is to be understood in particular as meaning that the housing molding exerts a normal force on the electrode assembly, in particular on at least one lateral surface of the electrode assembly On the one hand and the electrode assembly on the other hand, a force in the plane of the lateral surface, with a relative movement between the electrode assembly and the housing molding is met
  • Electrode assembly and current arrester counteracted. By clamping the electrode assembly and its disintegration or disassembly counteracts during operation counteracts.
  • a housing molding comprises at least one metal, more preferably a metal of the following group, which includes aluminum, copper, iron, steel.
  • a metal of the following group which includes aluminum, copper, iron, steel.
  • Housing molding provides a minimum protection of the electrode assembly from damaging mechanical influences, especially against the
  • Another advantage is that the housing molding the cohesion of
  • Electrode assembly supported by the housing molding exerts a normal force on the electrode assembly.
  • Another advantage is that the housing molding in particular due to its thermal conductivity of at least 40 W m "1 K " 1 is capable of dissipating heat from the electrode assembly.
  • a housing molding with a cavity Preferably, a housing molding with a cavity, below
  • Part molding called interior, and formed a molding opening, particularly preferably cup-shaped or cup-shaped.
  • the molding interior is surrounded by a molding wall.
  • the molding wall has at least two wall elements, the normal vectors of which are preferably arranged at an angle of substantially 90 ° to one another. Preferably that is
  • Housing molding formed with a substantially prismatic, cuboid or cylindrical shape.
  • the shape of the housing molding is adapted to the shape of the electrode assembly, in particular is a
  • the molding wall is dimensioned such that at least two wall elements touch the electrode assembly, more preferably a normal force on a lateral surface of the
  • Exercise electrode assembly This design offers the advantage that the electrode assembly is received substantially immovable in the housing molding.
  • a housing molding is essentially one
  • the housing molding by means of a forming process, a separation process and / or a
  • the housing molding by means of deep drawing, pressing, embossing, cold forming, cold extrusion, folding, hemming, flanging, stamping, fine blanking, welding,
  • Capacitor discharge welding Ultrasonic welding, brazing, brazing, soldering, gluing and / or combinations of these methods.
  • Specified dimensions can be produced.
  • a housing molding with a cavity, hereinafter referred to molding part interior, and a first mold part opening is formed, particularly preferably cup-shaped or
  • the housing molding is formed with a raised edge. This housing molding, in particular its
  • Molded part interior serves in particular for receiving the electrode assembly.
  • the molded part opening is used in particular as access to the molded part interior, whereby the molded part interior is surrounded by a molded part wall, wherein the first molded part wall has a plurality of wall elements each having a normal vector. At least two normal vectors are arranged at an angle of substantially 90 ° to each other
  • the housing molding is prismatic, particularly preferably substantially
  • Such a design of a housing molding offers the advantage that an electrode assembly can be accommodated in particular in a form-fitting manner.
  • the housing molding in particular its molding wall, is preferably dimensioned such that opposite lateral surfaces of the electrode assembly are each subjected to a normal force in the molding interior.
  • This design has the advantage that the electrode assembly frictionally (s.o.) With a frictional force of
  • a housing molding having a cavity, hereinafter referred to as the mold cavity interior, a second mold cavity opening and a mold guide region is preferably cup-shaped or cup-shaped.
  • the housing molding is with formed a raised edge. In particular, this serves
  • the molded part guide region is preferably adjacent to the second
  • Shaped part opening arranged.
  • the molding interior is surrounded by a first molding part wall, wherein the first molding part wall more
  • Wall elements each having a normal vector. At least two normal vectors are arranged at an angle of substantially 90 ° to each other.
  • the housing molding is prismatic, more preferably formed substantially parallelepipedic.
  • the shape of this housing molding corresponds to the shape of another
  • the second mold part wall in particular its mold guide area is dimensioned so that a first mold part wall can be received with a predetermined gap, particularly preferably form-fitting manner.
  • the second mold part wall is dimensioned such that a transition fit or a small clearance fit between the female housing mold part and the closing housing mold part occurs when the female mold part
  • Housing molding is inserted into the molding guide area.
  • the second part wall or its part guide area offers the advantage that a cohesive connection can be carried out essentially without traverskorrigierende preparations.
  • the second mold part wall is dimensioned such that a gap is established which sucks in a liquefied filler material, in particular during soldering.
  • a first housing molding and a second housing molding are at least partially connected in particular cohesively.
  • the housing moldings form a housing of the secondary cell, in particular for the electrode assembly.
  • this housing molding additionally serves:
  • this development of a housing molding has a
  • a current conductor is connected to this housing molding material cohesively, more preferably by means of a welded or soldered connection.
  • This version has the advantage that the current collector of the
  • Housing molding is held substantially immovable. Another advantage is that there is good electrical contact between the current conductor and the housing molding. Preferably, a current conductor is non-positively connected to this housing molding, wherein a friction force particularly preferably holds the current conductor in position with respect to the housing molding.
  • This embodiment has the advantage that the current conductor is held by the housing molding substantially immovable. Furthermore, this embodiment has the advantage that the current collector is insulated from the housing molding.
  • the secondary cell has a
  • Electrode assembly clamping device which:
  • the electrode assembly clamping device is at least temporarily inserted into a molding interior, preferably in the closing
  • Electrode assembly clamping device on a contact device, which is provided, at least temporarily, in particular flat on the
  • the abutment device is substantially plate-shaped or cup-shaped and rests at least temporarily on a lateral surface of the electrode assembly.
  • the electrode assembly clamping device has a
  • the application of force to the installation device serves to ensure that
  • the normal force actuator is preferably configured to be transferred from a relaxed state to a tensioned state.
  • These Embodiment offers the advantage that the normal force in the relaxed state allows easy insertion of the electrode assembly clamping device in a housing molding together with the electrode assembly. With transfer of the normal force actuator in the tensioned state, this urges the investment device in the direction of the electrode assembly or exercises a normal force on the investment device, which in particular the
  • the normal force actuator is formed with a spring, more preferably with an elastomer spring, plate spring, coil spring, leaf spring, gas spring.
  • the normal force actuator expands with overpass and the tensioned state and moves the
  • Electrode assembly This refinement has the advantage that an electrode assembly which does not completely fill the first molding part interior is also pressed against the particularly first molding part wall and kept substantially immovable by frictional forces.
  • the normal force actuator is elastic at least in the tensioned state, particularly preferably with a spring.
  • Dimensional change of the electrode assembly is compensated in particular as a result of changing state of charge of the electrode assembly by the normal force actuator by the electrode assembly is pressed unchanged against one, preferably the first part of the molding.
  • a housing molding has at least one Ableiterausnaturalung.
  • the Ableiterausnaturalung serves to receive a
  • the current collector is guided through the housing molding.
  • the current conductor is held positively and / or non-positively in the Ableiteraus originallyung, more preferably with a sealing device or an insulating device.
  • the sealing device or the Insulating device formed with an electrically insulating material, particularly preferably of a polymer or elastomer.
  • This embodiment has the advantage that the current conductor is electrically insulated and held substantially immovable relative to the housing molding.
  • the sealing device or the insulating device are multi-part and each with a recess for a substantially elongated region of a
  • This embodiment has the advantage that an assembly of the sealing device or the insulating device is simplified.
  • the secondary cell according to the invention is designed to deliver, at least temporarily, a current of at least 50A, 100A, 200A, 500A or more.
  • This embodiment offers the advantage that the secondary cell is suitable for supplying an electric main drive motor of a motor vehicle, in particular during an acceleration drive or a drive uphill.
  • the secondary cell according to the invention has a
  • the secondary cell according to the invention has a nominal charging capacity of at least 20 Ah.
  • This embodiment offers the advantage that the secondary cell is suitable in particular in the combination of a battery for supplying an electric main drive motor of a motor vehicle over a distance of at least 50 km.
  • the secondary cell according to the invention for operation between -40 ° C and + 100 ° C is provided.
  • This embodiment has the advantage that the secondary cell, in particular in combination with a battery for supplying a Consumer of a motor vehicle, for outdoor operation or a non-tempering room is suitable.
  • the secondary cell according to the invention is mounted in a motor vehicle and designed to provide electrical energy for a consumer of the motor vehicle, preferably for an electric motor of the
  • Motor vehicle particularly preferably for an electric motor which at least indirectly drives a wheel of the motor vehicle.
  • This design offers the advantage that the lifetime of the secondary cell violates and / or
  • a first preferred embodiment of the secondary cell has a
  • Electrode assembly two current collector, a receiving housing molding and a closing housing molding on
  • the female housing part is essentially designed as a shell with a raised edge.
  • the electrode assembly is in
  • Electrode assembly held in the housing molding substantially immovable. Also, the female housing molding per Stromableiter a Stromableiterausappelung.
  • Two current conductors, in particular their electrode assembly contact regions, are electrically conductively connected to electrodes of different polarity of the electrode assembly, preferably connected in a materially bonded manner, particularly preferably welded by means of ultrasound. Lead contact areas of the current conductors partially extend from the receiving housing molding in the
  • the closing housing molding in particular its
  • Molding guide portion accommodates the female housing molding at least partially.
  • Housing molding and the receiving housing molding are arranged parallel to each other, preferably, the wall elements contact each other surface. There, an overlap region is formed, which serves in particular to compensate for a deviation of an actual dimension of the electrode assembly from a desired dimension for the electrode assembly.
  • the overlapping area or adjacent are the female housing molding and the
  • closing housing molding together materially connected, preferably soldered or welded, more preferably with a peripheral seam.
  • the connected housing moldings exert a normal force on at least one lateral surface of the electrode assembly. A resulting frictional force keeps the electrode assembly substantially immovable with respect to
  • the connecting seam is formed as a circumferential, elastic Dick Anlagenklebung.
  • the elastic thick film adhesive allows the housing to be stretched to compensate for a change in thickness of the electrode assembly due to a changed state of charge.
  • the thick-film adhesion is on
  • This embodiment offers the advantage that the frictional force between the electrode assembly and the housing moldings can be maintained during operation.
  • Electrode assembly two current collector, a receiving housing molding and a closing housing molding on.
  • the female housing part is essentially designed as a shell with a raised edge.
  • the electrode assembly is in
  • Electrode assembly held in the housing molding substantially immovable. Also, the female housing molding per Stromableiter a Stromableiteraus Principleung.
  • Two current conductors are electrically conductively connected to electrodes of different polarity of the electrode assembly, preferably connected in a materially bonded manner, particularly preferably welded by means of ultrasound. Lead contact areas of the current conductors partially extend from the receiving housing molding in the
  • This design offers the advantage that a current collector is substantially immovable with respect to the housing molding and the electrode assembly is held.
  • the closing housing molding in particular its
  • Molding guide portion accommodates the female housing molding at least partially.
  • Housing molding and the receiving housing molding are arranged parallel to each other, preferably, the wall elements contact each other surface. There, an overlap region is formed, which serves in particular to compensate for a deviation of an actual dimension of the electrode assembly from a desired dimension for the electrode assembly.
  • the overlap area are the female housing molding and the occlusive
  • Housing molding connected to one another cohesively, preferably soldered or welded, particularly preferably with a peripheral connecting seam.
  • the closing housing molding is a
  • Electrode assembly clamping device with contact device
  • the normal force actuator urges in the tensioned state, the investment device against a lateral surface of the
  • the normal force actuator is designed as a gas spring, wherein the gas pressure is increased with transition to the tensioned state, preferably by means of an accessible from outside the secondary cell inlet valve, which is particularly preferably arranged in an outer wall of the housing moldings.
  • the normal force actuator is supported on the molding wall of the closing housing molding.
  • the gas spring is formed with a pressure relief valve and / or a bursting device, wherein pressure relief valve and / or bursting device are particularly preferably arranged in an outer wall of the housing moldings.
  • pressure relief valve and / or bursting device are particularly preferably arranged in an outer wall of the housing moldings.
  • electrochemical interaction of the electrodes of the electrode assembly with lowering of the normal force can be reduced. This configuration offers the advantage that the electrical current delivered by the electrode assembly can be reduced.
  • step S1 a first, in particular metallic housing molding, hereinafter referred to as step S1, wherein the housing molding a first molding part wall, a
  • Mold part interior having at least a first mold part opening.
  • step S2 Form part opening inserted into the first mold part interior of the first housing molding
  • Electrode assembly is held by the first mold part wall positively and / or non-positively. Subsequently, a second in particular metallic housing molding is provided, hereinafter called step S3, wherein the second
  • Housing molding a second Formteilwandung, a second mold part opening and the second molding part wall has a molded part guide region, in particular adjacent to the second mold part opening.
  • the first housing mold part is at least partially inserted into the second housing mold part, in particular in its molded part guide area, referred to below as step S4, in particular through the second mold part opening, whereupon the mold part guide area at least partially surrounds the first mold part wall.
  • the insertion takes place in particular in such a way that an overlap region is created by means of which a deviation of an actual dimension of the electrode assembly from a desired dimension of the electrode assembly is compensated.
  • Housing moldings for electrode assemblies are used in particular with different thicknesses.
  • step S5 a force in the direction of the other housing molding, hereinafter called step S5, in particular such that a normal force on the
  • Electrode assembly acts. This normal force is used in particular
  • the frictional force serves in particular to keep the electrode assembly substantially immovable with respect to at least one current conductor.
  • step S5 ends after step S6.
  • step S6 preferably cohesively, more preferably by means of at least one method from the following group, which welding, seam welding, resistance welding, medium frequency welding, Capacitor discharge welding, brazing, soldering, gluing and / or combinations of these methods.
  • the connection is made with an elastic Dick Anlagenklebung, which can compensate for a dimensional change of the electrode assembly limited due to a change in state of charge.
  • Electrode assembly is encountered in the operation of the secondary cell, in particular by the normal force in operation on a lateral surface of the electrode assembly,
  • a preferred development of the manufacturing method according to the invention comprises step S1 1, according to which a current conductor is connected to at least one arrester lug, preferably to a plurality of collector lugs of the same polarity, particularly preferably by means of welding, roll seam welding, resistance welding, medium frequency welding,
  • step S1 1 is performed before step S2.
  • step S1 1 is performed before step S2.
  • step S4 offers the advantage of a simplified installation of the secondary cell, in particular a simplified implementation of step S4.
  • a preferred embodiment of the manufacturing method according to the invention comprises step S9, after which a current conductor is passed through a Ableiteraus fundamentalung.
  • a preferred development of the manufacturing method according to the invention comprises step S10, according to which a current collector is connected to a housing molding, preferably to a female housing molding.
  • step S10 is performed before step S6, more preferably before step S4.
  • This development offers the advantage of simplified assembly.
  • a preferred embodiment of the method comprises step S7, after which an electrode assembly clamping device is inserted into the first housing molding, wherein the electrode assembly clamping device a
  • the normal force actuator is relaxed.
  • Electrode assembly clamping device used simultaneously with the electrode assembly in a housing molding.
  • step S6 step S8 follows, after which the normal force actuator is transferred into its tensioned state.
  • step S5 Installation on step S5 can be omitted.
  • This embodiment offers the further advantage that at least one of the dimensions of the electrode assembly can be compensated for deviation from the desired dimension with the normal force actuator.
  • This preferred embodiment can preferably be combined with the further developments, steps S9 to S11.
  • FIG. 1 schematically shows a section through an assembly for a
  • FIG. 2 schematically shows a section through a secondary cell according to the first preferred embodiment using the assembly of FIG. 1,
  • FIG. 3 schematically shows a section through an assembly for a
  • Fig. 4 shows schematically a section through an assembly for a secondary cell according to the second preferred embodiment and this
  • FIG. 1 shows schematically a section through an assembly for a
  • the electrode flat winding 2 is surrounded by a polymer film, not shown, for electrical insulation with respect to the metallic housing moldings.
  • a polymer film not shown
  • the insides of the housing moldings could be coated electrically insulating.
  • the first housing molding 4 is thermoformed from a sheet metal to a shell with a rectangular base and with a raised edge. In the first housing molding 4 Ableiterausappelisme 10, 10 a are punched. The electrode flat winding 2 is inserted through the first molded part opening 9 into the first molded part interior 8.
  • the second housing molding 5 is thermoformed from a metal sheet to a shell and with a raised edge.
  • the second housing mold part 5 has a second mold part wall 7a, a second mold part interior 8a, a second mold part opening 9a and a mold part guide region 20.
  • the molded part guide region 20 is part of the second mold part wall 7a and is arranged adjacent to the second mold part opening 9a.
  • the first housing molding 4 is partially inserted into the molding guide section 20 through the second molding opening 9a. This is the result
  • Mold part guide portion 20 of the second mold part wall 7a surrounds parts of the first mold part wall 7.
  • the second mold part wall 7a is in
  • Mold part guide portion 20 so dimensioned that with the first molding part wall 7, a welding gap or soldering gap is formed.
  • the housing moldings 4, 5 are clamped by the force F around the electrode flat winding 2.
  • the electrode flat coil 2 has a separator of "separation.”
  • the electrode flat coil 2 also has a cathode with LiFePO 4 .
  • 2 schematically shows a section through a secondary cell according to the first preferred embodiment using the assembly of FIG. 1.
  • the housing moldings 4, 5 or their molding walls 7, 7a are circumferentially welded together, which by the black filled triangles 31, 32nd is indicated. This is a housing 14vum the
  • Electrode flat winding 2 is formed.
  • the current conductor 3 shown schematically, has a threaded contact pin 1 1 formed as a contact area and an electrode contact area 12. On the threaded bolt 1 1, a busbar or a supply line can be pushed.
  • the electrode contact region 12 serves the electrical
  • Threaded bolt 1 1 is sealed relative to the housing molding 4 by means of a sealing device, not shown, and electrically insulated.
  • a sealing device which is fixed by a nut, also not shown on the threaded bolt 1 1, the threaded bolt 1 1 with a
  • Friction force held substantially immovable in a Ableiterausappelung 10. 3 schematically shows a section through an assembly for a
  • Electrode Assembly Clamping Device 15 The housing moldings 4, 5 essentially correspond to those of FIG. 1.
  • the electrode assembly clamping device 15 has a contact plate 16 and a spring 17.
  • the contact plate 16 is located on a lateral surface of the Electrode stack 2 on.
  • the spring 17 is provided to be supported on the second mold part wall 7a and to urge the contact plate 16 with a normal force against the electrode stack 2. That is possible if the
  • FIG. 4 shows schematically a section through an assembly for a
  • Fig. 4a shows schematically an assembly for a secondary cell according to the second preferred embodiment.
  • the module corresponds to
  • the electrode assembly clamping device 15 is formed with gas pressure springs 17a, 17b as a normal force actuator.
  • the housing moldings 4, 5 are not yet connected to each other. The assembly is shown after step S4.
  • the current conductor 3 shown schematically, has a threaded contact pin 1 1 formed as a contact area and an electrode contact area 12. On the threaded bolt 1 1, a busbar or a supply line can be pushed.
  • the electrode contact region 12 serves the electrical
  • Threaded bolt 1 1 is sealed relative to the housing molding 4 by means of a sealing device, not shown, and electrically insulated.
  • a sealing device which is fixed by a nut, also not shown on the threaded bolt 1 1, the threaded bolt 1 1 with a
  • 4b schematically shows a section through a secondary cell according to the second preferred embodiment using the assembly according to FIG. 3.
  • the housing moldings 4, 5 and their Formteilwanditch 7, 7a are identical to The housing moldings 4, 5 and their Formteilwanditch 7, 7a.
  • the gas springs 17a, 17a have already been transferred to their tensioned state.
  • the gas springs 17a, 17a are supported on the contact plate 16 and the second molding part wall 7a.
  • the electrode assembly clamping device 15 exerts a normal force on the electrode stack 2.
  • the normal force causes a frictional force which makes the electrode assembly substantially immovable with respect to the

Abstract

L'invention concerne une cellule électrochimique accumulatrice d'énergie désignée cellule secondaire ci-après et comportant un module électrodes. Le module électrodes comprend au moins un séparateur et deux électrodes de polarité différente. Le séparateur est disposé entre les deux électrodes. Le module électrodes est destiné à mettre à disposition de l'énergie électrique au moins par intermittence. La cellule secondaire comprend en outre un ou deux collecteurs de courant ou plus. Un collecteur de courant est destiné à être relié notamment de manière électroconductrice au module électrodes, de préférence avec une des électrodes et de préférence par liaison de matière, mieux encore par soudure. La cellule secondaire comprend en outre au moins deux parties moulées de boîtier, notamment métalliques. Les parties moulées de boîtier sont destinées à séparer le module électrodes de l'environnement de la cellule secondaire. Les parties moulées de boîtier sont également destinées à être reliées ensemble, notamment par liaison de forme et/ou de matière, les parties moulées de boîtier assemblées formant de préférence un boîtier autour du module électrodes. Au moins un et de préférence deux collecteurs de courant sont reliés notamment par liaison de forme et/ou de matière à une partie moulée de boîtier, de préférence avec la même partie moulée de boîtier. Au moins une des parties moulées de boîtier est prévue pour recevoir le module électrodes, notamment par liaison de forme et/ou à force.
PCT/EP2012/003411 2011-08-17 2012-08-09 Cellule électrochimique accumulatrice d'énergie à boîtier métallique, procédé de fabrication d'une cellule électrochimique accumulatrice d'énergie à boîtier métallique WO2013023767A1 (fr)

Applications Claiming Priority (2)

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DE102011110695.6 2011-08-17
DE102011110695A DE102011110695A1 (de) 2011-08-17 2011-08-17 Elektrochemische Energiespeicherzelle mit metallischem Gehäuse, Verfahren zur Herstellung einer elektrochemischen Energiespeicherzelle mit metallischem Gehäuse

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Publication number Priority date Publication date Assignee Title
DE102014225367A1 (de) * 2014-12-10 2016-06-16 Robert Bosch Gmbh Batterie und Verfahren zur Herstellung einer Batterie
DE102014225368A1 (de) 2014-12-10 2016-06-16 Robert Bosch Gmbh Batteriezelle
DE102015218695A1 (de) 2015-09-29 2017-03-30 Robert Bosch Gmbh Batteriezelle
DE102018202935A1 (de) * 2018-02-27 2019-08-29 Bayerische Motoren Werke Aktiengesellschaft Energiespeicherzelle und Verfahren zur Herstellung einer Energiespeicherzelle
DE102021131919A1 (de) 2021-12-03 2023-06-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Batteriezelle und Verfahren zu ihrer Herstellung
DE102022202055B3 (de) 2022-02-28 2023-07-06 Volkswagen Aktiengesellschaft Batteriezelle

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JPS6435871A (en) * 1987-07-31 1989-02-06 Nippon Telegraph & Telephone Lithium secondary cell
US5916709A (en) * 1993-12-03 1999-06-29 Bipolar Power Corporation Bipolar lead-acid battery
EP0948064A1 (fr) * 1998-03-30 1999-10-06 Renata AG Accumulateur ou pile prismatique avec container rigide et compressif
EP1341245A2 (fr) * 2002-02-27 2003-09-03 Nissan Motor Co., Ltd. Bloc de batteries
US20040033416A1 (en) * 2002-06-29 2004-02-19 Sang-Bum Kim Pouch type secondary battery
US20080241669A1 (en) * 2007-03-19 2008-10-02 Hitachi Maxell, Ltd. Flat-shaped battery
DE102009015687A1 (de) * 2009-03-31 2010-10-07 Li-Tec Battery Gmbh Galvanische Zelle mit Rahmen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435871A (en) * 1987-07-31 1989-02-06 Nippon Telegraph & Telephone Lithium secondary cell
US5916709A (en) * 1993-12-03 1999-06-29 Bipolar Power Corporation Bipolar lead-acid battery
EP0948064A1 (fr) * 1998-03-30 1999-10-06 Renata AG Accumulateur ou pile prismatique avec container rigide et compressif
EP1341245A2 (fr) * 2002-02-27 2003-09-03 Nissan Motor Co., Ltd. Bloc de batteries
US20040033416A1 (en) * 2002-06-29 2004-02-19 Sang-Bum Kim Pouch type secondary battery
US20080241669A1 (en) * 2007-03-19 2008-10-02 Hitachi Maxell, Ltd. Flat-shaped battery
DE102009015687A1 (de) * 2009-03-31 2010-10-07 Li-Tec Battery Gmbh Galvanische Zelle mit Rahmen

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