WO2013023774A1 - Élément accumulateur d'énergie électrochimique à boîtier métallique et procédé de fabrication d'un élément accumulateur d'énergie électrochimique à boîtier métallique - Google Patents

Élément accumulateur d'énergie électrochimique à boîtier métallique et procédé de fabrication d'un élément accumulateur d'énergie électrochimique à boîtier métallique Download PDF

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Publication number
WO2013023774A1
WO2013023774A1 PCT/EP2012/003435 EP2012003435W WO2013023774A1 WO 2013023774 A1 WO2013023774 A1 WO 2013023774A1 EP 2012003435 W EP2012003435 W EP 2012003435W WO 2013023774 A1 WO2013023774 A1 WO 2013023774A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
molding
secondary cell
electrode assembly
electrode
Prior art date
Application number
PCT/EP2012/003435
Other languages
German (de)
English (en)
Inventor
Robert Matthes
Harald REICHE
Jens Meintschel
Claus-Rupert Hohenthanner
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 WO2013023774A1 publication Critical patent/WO2013023774A1/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
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H01M50/26—Assemblies sealed to each other in a non-detachable manner
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • 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
    • H01M10/052—Li-accumulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • 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 13 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 14 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 molded parts is provided to receive the electrode assembly in particular form-fitting and / or non-positively, and to clamp the electrode assembly preferably.
  • 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 L1C0O2, 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 conductor preferably has a supply contact region, which is essentially cylindrical and particularly preferably has an external thread. An eye or a hook at the end of a
  • Power cables can surround the lead contact area and be secured with a nut to be screwed on.
  • the lead contact area Preferably, the
  • Stromableiter a substantially plate-shaped electrode contact area, which in particular for contacting the electrode assembly or an electrode is used, 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 region with a substantially rectangular boundary surface within the housing.
  • Embodiment offers the advantage that the number of material transitions in the current path from the electrode to the load is reduced by the arrester lug is connected directly to the current collector.
  • Another advantage of this embodiment is the improved sealing of the housing by a possibly multi-part sealing device can be pushed over the bolt and secured. If 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 embodiment has the advantage that at the same time a sealing device or
  • Isolation device can be secured.
  • the term "force-fit reception of the electrode assembly” is understood to mean that the housing molding exerts a normal force on the electrode assembly, in particular on at least one lateral surface of the electrode assembly Formteilwandung follows a force, in particular a Frictional force in the plane of the lateral surface, which is counteracted in particular during operation of a relative movement between the electrode assembly and housing molding.
  • 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.
  • the housing molding is capable of heat removal from the electrode assembly, in particular due to its thermal conductivity of at least 40 W m "1 K " 1 .
  • 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.
  • a housing molding is substantially prismatic, more preferably parallelepiped with a
  • Cavity hereinafter referred molding part interior, and formed at least one molding opening.
  • This housing molding is used in particular for receiving the electrode assembly.
  • the molded part opening serves, in particular, as access to the molded part interior, wherein the electrode assembly can be inserted into the molded part interior through this molded part opening.
  • Forming a housing molding offers the advantage that an electrode stack or an electrode flat winding can be accommodated in particular in a form-fitting manner.
  • the housing molding, in particular the molding wall is dimensioned so that opposite lateral surfaces of the electrode assembly in the molding interior each with a normal force
  • Housing molding is held.
  • a housing molding is formed substantially plate-shaped. In particular, this serves
  • Housing molding for: Closing a molding opening of another housing molding
  • this housing molding corresponds to a molded part opening of a first housing molding to be closed, preferably this housing molding has a collar for insertion into the housing
  • this collar is used for aligning or centering this housing molding with respect to
  • this housing molding has a metal as stated above.
  • the housing molding is formed substantially as a housing cover.
  • a current conductor is connected in a material-bonded manner to this housing molding, particularly preferably by means of a welded connection electrical contact between current conductor and housing molding is given.
  • a current conductor is positively connected to this housing molding.
  • a current conductor is positively connected to this 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.
  • a housing molding more preferably a
  • the arrester housing housing molding 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 Ableiterausappelung.
  • the current conductor is held with a sealing device or an insulating device positively and / or non-positively in the Ableiterausappelung.
  • the sealing device or the insulating device are formed with an electrically insulating material, particularly preferably made of a polymer or
  • the sealing device or the insulating device are multi-part and each formed with a recess for a substantially cylindrical and elongated region of a Stromableiters.
  • 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.
  • a current of at least 50A, 100A, 200A, 500A or more is provided.
  • 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 is particularly suitable in the combination of a battery for supplying a consumer of a motor vehicle, for outdoor operation or a non-tempered room.
  • 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
  • Vibrations from the operation of the motor vehicle is increased.
  • Electrode assembly one or two current conductors, one receiving Housing molding and a drain housing housing molding on. At least one current collector has a threaded bolt
  • Electrode assembly contact area 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.
  • the receiving housing molding is formed substantially as a cup, has a molding wall, possibly with a plurality of wall sections, a molding interior, as well as a molding opening, which provides access to the
  • the electrode assembly is received in the molding interior and is in particular of the molding wall
  • Housing molding has a Ableiterausnaturalung per current conductor.
  • the supply contact region of the current collector is guided through the Ableiterausappelung and held in particular by means of a sealing device in particular form-fitting and / or non-positively in the Ableiterausappelung.
  • a nut is for connecting current conductors,
  • the female housing mold part and the housing mold part holding the outlet are in particular materially connected to one another, preferably welded.
  • This embodiment has the advantage that mechanical loads on the electrically conductive connections of the electrode assembly and current conductors from relative movements in the
  • Electrode assembly one or two current conductors, one receiving
  • At least one current collector has a threaded bolt
  • Electrode assembly contact area and a substantially plate-shaped Electrode assembly contact area.
  • Two current conductors, in particular their electrode assembly contact areas, 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.
  • the receiving housing molding is substantially formed as a cup, has a molding part wall around a molding interior, and a molding opening, which provides access to the molding interior.
  • the electrode assembly is accommodated in the molding interior and is held therein in particular by the molding wall in a form-fitting and / or non-positive manner. Also, the female housing molding per Stromableiter a Stromableitencies Principleung.
  • Stromableiters is guided through the Ableiterausappelung and held in particular by means of a sealing device in particular form-fitting and / or non-positively in the Ableiterausappelung.
  • a sealing device in particular form-fitting and / or non-positively in the Ableiterausappelung.
  • a nut is screwed onto the threaded bolt for connection of the current conductor, the housing-holding part and the sealing device.
  • Closing housing molding is formed substantially as a housing cover.
  • the receiving housing molding and the closing housing molding are connected to each other in particular cohesively, preferably welded. This embodiment offers the advantage that mechanical loads on the electrically conductive connections of
  • Electrode assembly and current arresters from relative movements is counteracted in operation, causing aging of the electrically conductive
  • Another advantage of this embodiment is that a mechanical load of the electrically conductive
  • the female housing moldings are cold-extruded.
  • the advantage is that the dimensional accuracy of the receiving
  • Electrode assembly one or two current conductors, one receiving
  • Housing molding a drain housing housing molding and a
  • At least one current collector has a feed contact area formed as a threaded bolt and a substantially plate-shaped electrode assembly contact area.
  • 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.
  • the female housing part is in
  • Essentially tubular has a molding part wall around a molding interior, and two molding openings, which each have a
  • the molding wall surrounds the substantially cylindrical, prismatic or cuboidal
  • the electrode assembly is in
  • Molded part interior and is taken from the molding wall
  • arrester housing part has per each current conductor a
  • Stromableiters is guided through the Ableiterausappelung and held in particular by means of a sealing device in particular form-fitting and / or non-positively in the Ableiterausappelung.
  • a nut is screwed onto the threaded bolt for connection of the current conductor, the housing-holding part and the sealing device.
  • the Closing housing molding is formed substantially as a housing cover.
  • the receiving housing molding and the closing housing molding are connected to each other in particular cohesively, wherein a molding opening is closed.
  • the female housing mold part and the housing housing part holding the outlet are in particular one another
  • This embodiment has the advantage that mechanical loads on the electrically conductive connections of the electrode assembly and current conductors from relative movements during operation are counteracted, whereby an aging of the electrically conductive connections is encountered.
  • Another advantage of this embodiment is that the female housing molding is inexpensive to produce from a substantially plate-shaped starting material by means of cutting, bending, raising, roll forming, welding, soldering and / or gluing.
  • step S1 a first, in particular metallic housing molding, hereinafter referred to as step S1 wherein the housing molding has a molding part wall, a molded part interior and at least one molding opening. Subsequently, a first, in particular metallic housing molding, hereinafter referred to as step S1, wherein the housing molding has a molding part wall, a molded part interior and at least one molding opening. Subsequently, a first, in particular metallic housing molding, hereinafter referred to as step S1, wherein the housing molding has a molding part wall, a molded part interior and at least one molding opening. Subsequently, a first, in particular metallic housing molding, hereinafter referred to as step S1, wherein the housing molding has a molding part wall, a molded part interior and at least one molding opening.
  • Electrode assembly having at least two electrodes of different polarity and a separator inserted through the molding opening in the molding interior of the housing molding, hereinafter called step S2, whereupon
  • the electrode assembly is held by the molding wall form-fitting and / or non-positively.
  • the molding opening is closed with a second, in particular metallic housing molding, hereinafter referred to as step S3, preferably with joining the
  • a preferred development of the first preferred manufacturing method comprises step S4, after which a current collector is connected to the electrode assembly, preferably to an electrode of the electrode assembly. Preferably, an electrode assembly contact region of the current collector is connected to the electrode assembly. Preferably, step S4 takes place before step S3.
  • Manufacturing method includes step S5, after which a current collector is connected to a housing molding in particular positive and / or non-positive.
  • the current conductor is passed through a Ableiteraus originallyung of the housing molding and / or a sealing device, hereinafter called step S6.
  • step S5 or step S6 preferably take place before step S3.
  • Manufacturing method comprises step S5 ', after which a current collector is connected to a housing molding in particular cohesively, can be dispensed with a sealing device.
  • step S5 takes place before step S3.
  • Manufacturing method comprises step S7, according to which a particular
  • plate-shaped starting material is formed into a housing molding, particularly preferably by means of at least one method from the following group, which pressing, deep-drawing, embossing, cold forming, folding,
  • Hinges, roll forming, extrusion, cold extrusion, flanging and / or Combinations of these methods include.
  • This preferred development has the advantage that the housing molding can be produced inexpensively.
  • step S7 takes place before step S1 or step S3.
  • Manufacturing method includes step S8, according to which a particular
  • plate-shaped starting material is added to a housing molding, particularly preferably by means of at least one method from the following group, which welding, seam welding, resistance welding,
  • step S7 takes place before step S1 or step S3.
  • Manufacturing method includes step S9, according to which a particular
  • plate-shaped starting material is separated into a housing molding, more preferably by means of at least one method from the following group, which punching, fine blanking, sawing and / or combinations of these
  • Procedure includes.
  • at least one Ableiterauslangung is produced by means of a separation process, particularly preferably by means of punching.
  • This preferred development has the advantage that the housing molding can be produced inexpensively with high dimensional accuracy.
  • step S9 takes place before step S1 or step S3.
  • 1 shows schematically a secondary cell according to the invention
  • 2 shows schematically a preferred embodiment of a secondary cell according to the invention
  • Fig. 3 shows schematically a further preferred embodiment of a
  • FIG. 4 schematically shows a preferred embodiment of a housing molding of the secondary cell according to FIG. 3.
  • FIG. 1 shows a secondary cell 1 according to the invention, with a first
  • the first housing molding 4 is made of a metal sheet to a
  • the second housing molding 5 is thermoformed from a metal sheet to a cup.
  • the second housing molding 5 has a molding wall 7, a molded part interior 8 and a molding opening 9.
  • Formteilwandung 7 is coated electrically insulating towards the electrode assembly.
  • the electrode flat winding 2 is inserted through the molded part opening 9 in the molded part interior 8 and is frictionally held with a frictional force of the molding wall 7.
  • Housing cover 4 and cup 5 are designed to be connected by crimping.
  • the current conductors 3, 3 a have a feed contact area designed as a threaded bolt 11 and an electrode contact area 12. On the threaded bolt 1 1 a perforated metal ashes of a supply line can be pushed.
  • the Electrode contact areas 12 are used for electrical connection to the electrodes of the electrode flat winding 2, in particular to the discharge lugs of the electrodes.
  • the threaded bolts 1 1 of the current collector 3, 3 a are guided by the AbleiterausEnglish Prof 10, 10 a.
  • the threaded bolts 1 1 are sealed relative to the housing cover 4 by means not shown sealing devices and electrically insulated.
  • the electrode flat coil 2 has a separator of "separation.”
  • the electrode flat coil 2 also has a cathode with LiFePO 4 .
  • Fig.2 shows a preferred embodiment of an inventive
  • the first housing molding 4 is made as a cup of a metallic material by means of cold extrusion.
  • the first housing molding 4 has a molding wall 7, a molded part interior 8 and a molding opening 9.
  • the molding wall 7 is coated electrically insulating towards the electrode assembly.
  • the electrode flat winding 2 is inserted through the molded part opening 9 into the molded part inner space 8 and is held in a force-fitting manner by the molded part wall 7.
  • the first housing molding 4 has two
  • the second housing molding 5 is pressed as a housing cover of a metal sheet. Housing cover 4 and cup 5 are designed to be welded together. When welding the housing moldings 4, 5, the mold part opening 9 to be closed is directed downwards.
  • the current conductors 3, 3 a have a feed contact area designed as a threaded bolt 11 and an electrode contact area 12.
  • the electrode contact regions 12 are used for the electrical connection to the electrodes of the electrode flat winding 2, in particular to the discharge lugs of the electrodes.
  • the threaded bolts 1 1 of the current collector 3, 3 a are guided by the Ableiterausappel traditions 10, 10 a.
  • the threaded bolts 1 1 are sealed relative to the cup 4 by means not shown sealing devices and electrically insulated. By means of the sealing means, which are each secured by a nut, also not shown on the threaded bolt, the threaded bolt is frictionally a Ableiteraus Principleung 10, 10 a held.
  • the electrode flat coil 2 has a separator of "separation.”
  • the electrode flat coil 2 also has a cathode with a mixture of lithium manganate, lithium cobaltate and lithium nickelate.
  • Fig. 3 shows schematically a further preferred embodiment of a secondary cell according to the invention, with three housing moldings 4, 5, 6, two Stromableitern 3, 3a and an electrode stack 2.
  • a housing molding 4 is pressed and punched to a housing cover of a metal sheet.
  • the first housing molding 4 has two
  • a third housing molding 6 is pressed to a bottom of a metal sheet.
  • a second housing molding 5 is formed as a tube with a substantially rectangular cross-section. For this purpose, a substantially rectangular sheet metal is bent several times, with two boundary edges come to lie parallel to each other. Subsequently, the boundary edges are brazed.
  • the second housing molding 5 has a molding wall 7, a molded part interior 8 and two molding openings 9, 9a.
  • Electrode flat winding 2 is through a molding opening 9, 9a in the
  • Form part interior 8 is inserted and is non-positively held by the Formteilwandung 7.
  • the housing cover 4 and the second housing molding 5 are designed to be soldered together, wherein a molding opening 9, 9a is closed.
  • Base 6 and second housing molding 5 are configured to be soldered together, with a molding opening 9, 9a being closed.
  • Shaped part opening 9, 9a directed downwards.
  • the secondary cell is turned after the first soldering operation, so that the to be closed during the next soldering molding opening is directed downwards.
  • the current conductor 3, 3a have a threaded bolt designed as
  • the electrode contact areas 12 are used for electrical connection with the
  • Electrodes of the electrode flat coil 2 in particular with the discharge lugs of the electrodes.
  • the threaded bolts of the current collector 3, 3a are guided by the Ableiterausappel traditions 10, 10a.
  • the threaded bolts 3, 3a are sealed relative to the cup 4 by means not shown sealing devices and electrically insulated.
  • the sealing means which are each secured by a nut, also not shown on the threaded bolt, the threaded bolt is frictionally a Ableiteraus fundamentalung 10, 10 a held.
  • the electrode flat coil 2 has a separator of "separation.”
  • the electrode flat coil 2 also has a cathode with a mixture
  • Lithium manganate, lithium cobaltate and lithium nickelate Lithium manganate, lithium cobaltate and lithium nickelate.
  • FIG. 4 shows schematically a preferred embodiment of a housing molding of the secondary cell according to FIG. 3.
  • the illustrated housing molding 4 is as a tube with substantially
  • the housing molding 4 is first folded from a metal sheet, wherein two wall portions of the molding wall 7 overlap each other in regions. In the area of the overlap, the wall sections are connected by means of seam welding. This design allows a cost-effective production of the housing molding 4.
  • Another housing molding 6 is made of a metal sheet to a
  • Housing cover deep drawn with a raised edge.
  • the raised edge serves to center the housing cover 6 in the molded part opening 9a.
  • the housing moldings 4, 6 takes place while the mold part opening 9a is directed downwards.

Abstract

L'invention concerne un système accumulateur d'énergie électrochimique, ci-après appelé pile secondaire, qui présente un ensemble d'électrodes. L'ensemble d'électrodes possède au moins un séparateur et deux électrodes de polarités différentes. Le séparateur est disposé entre deux électrodes. L'ensemble d'électrodes est prévu pour fournir de l'énergie électrique au moins par intermittence. La pile secondaire présente en outre un, deux ou plusieurs dérivateurs de courant. Un dérivateur de courant est prévu pour être relié à l'ensemble d'électrodes, en particulier de manière électriquement conductrice, de préférence à l'une des électrodes, de préférence par liaison de matière et notamment par une liaison soudée. La pile secondaire présente également au moins deux parties de boîtier façonnées, en particulier métalliques. Les parties de boîtier façonnées sont prévues pour isoler l'ensemble d'électrodes de l'environnement de la pile secondaire. Les parties de boîtier façonnées sont elles aussi prévues pour être assemblées l'une avec l'autre, en particulier mécaniquement et/ou par liaison de matière, les parties de boîtier façonnées assemblées formant de préférence un boîtier qui entoure l'ensemble d'électrodes. Au moins un, de préférence deux dérivateurs de courant sont reliés à une partie de boîtier façonnée, en particulier mécaniquement et/ou par liaison de matière, en particulier à la même partie de boîtier façonnée. L'une au moins des parties de boîtier façonnées est prévue pour recevoir l'ensemble d'électrodes, en particulier par un assemblage mécanique et/ou par adhérence, et de préférence pour bloquer l'ensemble d'électrodes.
PCT/EP2012/003435 2011-08-17 2012-08-10 Élément accumulateur d'énergie électrochimique à boîtier métallique et procédé de fabrication d'un élément accumulateur d'énergie électrochimique à boîtier métallique WO2013023774A1 (fr)

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DE102011110815.0 2011-08-17
DE102011110815A DE102011110815A1 (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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EP3098874A1 (fr) 2015-05-29 2016-11-30 Lithium Energy and Power GmbH & Co. KG Boîtier pour cellules électrochimiques, cellule électrochimique, et procede de fabrication de un boîtier pour cellules électrochimiques
JP6536885B2 (ja) * 2015-06-15 2019-07-03 トヨタ自動車株式会社 電池容器の製造方法および電池容器
DE102017206989A1 (de) * 2017-04-26 2018-10-31 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines Zellgehäuses einer elektrochemischen Batteriezelle und elektrochemische Batteriezelle sowie Batteriemodul
CN113049854A (zh) * 2021-03-04 2021-06-29 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 一种多用高压试验线夹连接件

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US5618318A (en) * 1994-09-13 1997-04-08 Power Conversion, Inc. Method for forming a folded electrode configuration for galvanic cells
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US11664554B2 (en) 2014-08-19 2023-05-30 Varta Microbattery Gmbh Battery having a prismatic housing and production method thereof

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