WO2015003787A2 - Dispositif d'accumulation d'énergie pourvu de deux collecteurs de courant et procédé permettant de produire un dispositif d'accumulation d'énergie - Google Patents

Dispositif d'accumulation d'énergie pourvu de deux collecteurs de courant et procédé permettant de produire un dispositif d'accumulation d'énergie Download PDF

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Publication number
WO2015003787A2
WO2015003787A2 PCT/EP2014/001838 EP2014001838W WO2015003787A2 WO 2015003787 A2 WO2015003787 A2 WO 2015003787A2 EP 2014001838 W EP2014001838 W EP 2014001838W WO 2015003787 A2 WO2015003787 A2 WO 2015003787A2
Authority
WO
WIPO (PCT)
Prior art keywords
energy storage
contact
storage device
storage devices
parallel
Prior art date
Application number
PCT/EP2014/001838
Other languages
German (de)
English (en)
Other versions
WO2015003787A3 (fr
Inventor
Lasse LANDT
Alexander Langner
Jens Meintschel
Original Assignee
Li-Tec Battery Gmbh
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 Li-Tec Battery Gmbh, Daimler Ag filed Critical Li-Tec Battery Gmbh
Publication of WO2015003787A2 publication Critical patent/WO2015003787A2/fr
Publication of WO2015003787A3 publication Critical patent/WO2015003787A3/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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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

  • the present invention relates to an energy storage device with two current conductors and a method for producing the same
  • the invention is described in connection with lithium-ion batteries for the supply of motor vehicle drives. It should be noted that the invention can also be used regardless of the type of battery, the chemistry of the energy storage device or regardless of the type of powered drive.
  • the energy storage devices each have two current conductors of different polarity, at which the electrical voltage of the energy storage device can be tapped.
  • the energy storage devices with interconnecting devices, in particular busbars or printed circuit boards, electrically connected or interconnected.
  • an object of the invention is to improve the interconnection of multiple energy storage devices.
  • the object is achieved by an energy storage device according to claim 1.
  • Claim 8 describes an arrangement with at least two
  • Claim 9 describes a battery with at least two of these arrangements. The object is also achieved by a Hers part process for an energy storage device according to
  • Claim 1 The object is also achieved by a Herste II method for a battery according to claim 13. Preferred developments of the invention are the subject of the dependent claims.
  • Electrochemical electrode assembly for providing electrical energy and an enclosure for limiting the electrochemical
  • Electrode assembly relative to the environment of the energy storage device.
  • the energy storage device has at least two current conductors of different electrical polarity, which each extend at least in sections from the enclosure and to which the electrical voltage of the electrochemical electrode assembly can be tapped.
  • the at least two current conductors each have at least one first one
  • Energy storage devices are designed. The least two
  • Contact lugs each have a contact surface.
  • the contact surface is designed to contact, preferably one of these contact surfaces, an adjacent energy storage device.
  • a first normal vector is perpendicular to the first contact surface and a second normal vector is aligned perpendicular to the second contact surface.
  • the first normal vector is substantially perpendicular to the second
  • the energy storage device according to the invention or at least one of the current collector has two contact lugs, which for electrical
  • Interconnecting devices for interconnecting the energy storage devices are dispensed with. With the waiver of such electrical
  • Interconnection facilities can be the effort to interconnect the
  • the energy storage device according to the invention can be grouped with other identical energy storage devices to a substantially cuboidal battery.
  • the energy storage devices can be interconnected without further electrical interconnection devices.
  • the invention can provide the advantage of reduced expense in the manufacture of the battery by eliminating the need for preparation of electrical circuitry.
  • the invention may allow an energy storage device according to the invention to be electrically connected to at least two further energy storage devices at the same time.
  • the energy storage device is formed substantially cuboid.
  • an electrode assembly is to be understood as meaning a device which in particular serves to provide electrical energy or an electrical voltage.
  • the electrode assembly has at least two electrodes of different polarity. These electrodes of different polarity are spaced apart by an ion-conducting separator, the electron separator being nonconductive.
  • Electrode assembly is configured to convert stored chemical energy into electrical energy before the electrode assembly provides that electrical energy to a consumer.
  • the electrode assembly is configured to convert supplied electrical energy into chemical energy and store it as chemical energy.
  • an electrode has a particular metallic collector foil and an active mass.
  • the active composition is applied to the collector foil at least on one side.
  • electrons are exchanged between the collector foil and the active mass.
  • the collector foil at least one arrester lug,
  • an electrode has a particular metallic collector foil and two active materials of different polarity, which on
  • the separator is permeable to ions but not to electrons
  • the separator contains at least part of the electrolyte or
  • the electrolyte is preferably formed without liquid fraction after the energy storage device has been closed. With particular preference, lithium ions are stored or intercalated during charging into the negative electrode and are removed again during discharging.
  • the electrode assembly is formed as a substantially cuboid electrode stack.
  • the electrode stack has a predetermined sequence of stack sheets, with two electrode sheets of different polarity separated by a separator sheet.
  • each is
  • Electrode sheet with a Stromleit in particular cohesively connected, particularly preferably formed integrally with the Stromleit observed.
  • electrode sheets are of the same polarity
  • Electrode sheets can be increased in a simple manner by adding more electrode sheets.
  • at least two separator sheets are connected to one another and surround a delimiting edge of an electrode sheet arranged between these separator sheets.
  • Such an electrode assembly with a continuous, in particular meander-shaped separator is described in WO 201 1/020545. This embodiment offers the advantage that a parasitic current, starting from this limiting edge to an electrode sheet of a different polarity, is encountered.
  • an enclosure is to be understood as meaning a device which serves in particular to limit the electrode assembly to the surroundings of the energy storage device, which in particular is intended to counteract an exchange of substances between the electrode assembly and the surroundings of the energy storage device, which in particular results in an uncontrolled exchange of energy counteract with the electrode assembly.
  • the enclosure has a receiving space for
  • the sheath is closable around the electrode assembly.
  • the enclosure conforms to the electrode assembly.
  • the shape of the enclosure substantially conforms to the shape of the electrode assembly.
  • the enclosure has three pairs
  • the envelope is formed with a composite film, which composite film has at least one layer which an exchange of water or water vapor between the electrode assembly and the
  • this layer is formed with a metal foil.
  • the metal foil is formed with a metal foil.
  • the bag or the bag has at least one substantially gas-tight connection section, in which the composite film is bonded to a further one of these composite films, particularly preferably welded.
  • the composite film is folded or bent, and the composite film is at least partially laid twice. In this double-laid
  • the composite film is materially bonded to itself and thus forms at least one substantially gas-tight connection portion.
  • So-called pouch cells have at least one or two of these
  • This preferred embodiment can in particular offer the advantage that the envelope heat exchange with the
  • Electrode assembly a low thermal resistance
  • the envelope is formed with at least one, preferably metallic, envelope molding.
  • the envelope molding may at least partially receive the electrode assembly.
  • the envelope molding is formed with a polymeric material.
  • the envelope has two of these envelope shaped parts, which are preferably cohesively connectable to one another for forming the envelope, which preferably the electrode assembly in the connected state in Enclose substantially completely.
  • a current conductor means a device which in particular serves to exchange electrical energy with the electrode assembly, which in particular has the electrical connection to a consumer and / or to a current conductor of another
  • Energy storage device is used, which in particular the line of
  • Electrons serves.
  • the current collector is connected to one of the electrodes
  • Electrode assembly electrically, preferably cohesively, connectable, preferably within the enclosure.
  • the current collector extends at least partially from the enclosure.
  • the current collector has an electrically conductive section with a metallic material.
  • the current conductor is massively formed with a metallic material, more preferably with aluminum, copper, an aluminum alloy or with a copper alloy.
  • the current conductor is formed with a metal foil or a metal plate.
  • the material of the current conductor corresponds to the material of the collector foil of the electrode, with which the current conductor is connected in particular cohesively.
  • This embodiment offers the advantage of reduced contact corrosion between current collector and collector foil.
  • At least the portion of the current collector extending outside the enclosure is formed with a metal plate or a metallic molded part.
  • at least the portion of the current conductor extending within the enclosure has one or more
  • a contact lug is to be understood as meaning a device which in particular serves the electrical connection to a further one of these energy storage devices, which in particular the
  • the contact lug is integrally formed with the current collector.
  • the contact lug extends from the current collector in the environment of the energy storage device.
  • the contact lug is plate-shaped.
  • the contact lug extends substantially parallel to one of the lateral surfaces of the energy storage device or the envelope.
  • the contact lug is plate-shaped.
  • the contact lug extends substantially parallel to one of the lateral surfaces of the energy storage device or the envelope.
  • a contact surface is to be understood as meaning, in particular, a surface of one of these contact lugs, in particular a section of a lateral surface of one of these contact lugs.
  • the contact surface serves to contact an adjacent energy storage device or a contact lug of the adjacent energy storage device or one
  • the contact surface is used in particular for the electrical and / or material connection with an adjacent energy storage device or with a contact lug of the adjacent energy storage device or with a contact surface of the adjacent energy storage device.
  • the orientation of the contact surface can be described by means of a normal vector, the normal vector extending perpendicularly from the contact surface, from the contact surface into the contact surface
  • the Environment of the energy storage device is directed and the amount of the normal vector corresponds to the surface area of the contact surface.
  • the normal vector to one of these contact surfaces perpendicular to one of
  • the contact surface has at least one projection, in particular preferably for projection welding of the contact lug.
  • the contact surface is partially crowned, particularly preferred for improved weldability.
  • Energy storage devices can be electrically connected or interconnected.
  • This preferred development can in particular offer the advantage that both the electrical voltage and the charging capacity of a battery, designed with these energy storage devices, can be increased in the short term.
  • This preferred development can in particular offer the advantage that both the electrical voltage and the charging capacity of a battery configured with this energy storage device can be increased without further electrical interconnection devices.
  • the envelope has a first lateral surface and the first contact surface is arranged substantially parallel to the first lateral surface.
  • the first lateral surface corresponds to one of the largest lateral surfaces of the energy storage device or the
  • the first lateral surface of an adjacent one of these energy storage devices facing, if both
  • the first contact surface and the first lateral surface are arranged in the same plane.
  • the first contact lug extends or their first contact surface beyond the first lateral surface in the direction of an adjacent of these energy storage devices.
  • Jacket surfaces of adjacent energy storage devices within the same battery can be arranged parallel to each other. This preferred development can in particular offer the advantage that the first
  • Mantle surfaces of adjacent energy storage devices can touch each other.
  • This preferred development can in particular offer the advantage that the surface contact of the first contact surface of a first of these energy storage devices with the first contact surface of a further one of these energy storage devices is improved.
  • This preferred development can in particular offer the advantage that the joining of several of these energy storage devices of the same battery to a
  • This preferred development can in particular offer the advantage that the alignment of adjacent energy storage devices is simplified.
  • This preferred development can in particular offer the advantage that the cohesive connection of the first contact lug of a first of these
  • Energy storage devices with the first contact surface of another of these energy storage devices is simplified.
  • the envelope has a second lateral surface and the second contact surface is arranged substantially parallel to the second lateral surface.
  • the second lateral surface is smaller than the first lateral surface.
  • the second lateral surface is arranged substantially perpendicular to the first lateral surface.
  • the second lateral surface faces an adjacent one of these energy storage devices.
  • the second contact surface and the second lateral surface are arranged in the same plane.
  • the second contact lug or its second contact surface extends beyond the second lateral surface in the direction of an adjacent one of these energy storage devices.
  • Jacket surfaces of adjacent energy storage devices within the same battery can be arranged parallel to each other. This preferred development can in particular offer the advantage that the second
  • Mantle surfaces of adjacent energy storage devices can touch each other. This preferred development can in particular offer the advantage that the surface contact of the second contact surface of a first of these energy storage devices with the second contact surface of a further one of these energy storage devices is improved. This preferred
  • Aligning adjacent energy storage devices is simplified. This preferred development can in particular offer the advantage that the cohesive connection of the second contact lug of a first of these energy storage devices to the second contact surface of a further one of these energy storage devices is simplified.
  • the envelope is formed with a composite film.
  • the composite foil has at least one of these connecting portions, which extends substantially perpendicular to the second lateral surface.
  • the second extends Contact lug or its second contact surface beyond the connecting portion in the direction of an adjacent of these energy storage devices.
  • This preferred development can offer the particular advantage that the adjacent arrangement of identical energy storage devices can be done with space-saving within the same battery.
  • Jacket surfaces of adjacent energy storage devices within the same battery can be arranged parallel to each other. This preferred development can in particular offer the advantage that the planar
  • At least one or two of these current conductors each have a conductor leg, wherein the at least one conductor leg extends substantially perpendicular to the first lateral surface, preferably in the direction of an adjacent one of these energy storage devices.
  • At least two of these contact lugs preferably at least one first of these contact lugs and at least one second of these contact lugs, extend from the conductor leg.
  • a normal vector to a lateral surface of the arrester arm during operation of the energy storage device is substantially vertical aligned.
  • the Ableiterschenkel extends substantially perpendicular to the first lateral surface.
  • This preferred development can in particular offer the advantage that both the current conductor and the arrester lugs are mechanically more stable. This preferred development can in particular the
  • a first of these current conductors and a second of these current conductors extend from opposite third lateral surfaces of the enclosure at least in sections into the
  • the third lateral surfaces extend substantially perpendicular to the first lateral surface and substantially perpendicular to the second lateral surface.
  • the third lateral surfaces are each smaller than the first lateral surface.
  • the third lateral surfaces do not face any of the adjacent energy storage devices.
  • At least one of these current conductors extends over more than half of, more preferably over the entire, width of the third lateral surface, wherein preferably the width of the third lateral surface is to be dimensioned in the plane of the first lateral surface.
  • This preferred development can in particular offer the advantage that the heat capacity of the current conductor is increased.
  • At least one or two of these current conductors each have at least two of these first contact lugs.
  • This preferred development can in particular offer the advantage that a plurality of electrical and / or bonded connections between the first contact lugs of adjacent energy storage devices can be formed.
  • This preferred development can in particular offer the advantage that the mechanical cohesion of two adjacent and thus connected energy storage devices is improved.
  • This preferred development can in particular offer the advantage that the current density per electrical connection is reduced.
  • This preferred development can in particular offer the advantage that the voltage of the battery can be increased more easily.
  • At least one or two of these current conductors each have at least two of these second contact lugs.
  • two of these second contact lugs extend adjacent to opposite second lateral surfaces of the envelope.
  • one of these second contact lugs extends adjacent to a first of these second lateral surfaces and a further one of these second contact lugs adjacent to an opposing second lateral surface.
  • Energy storage devices can be connected in parallel.
  • This preferred development can in particular offer the advantage that an arrangement of three parallel-connected energy storage devices is formed can be, whose first lateral surfaces are arranged substantially in the same plane.
  • This preferred development can in particular offer the advantage that the charging capacity of the battery can be increased more easily.
  • a parallel arrangement comprises at least a first of these energy storage devices and at least a second of these energy storage devices.
  • Energy storage device is electrically connected to one of these second contact lugs of the second energy storage device, preferably cohesively.
  • the first lateral surface of the first energy storage devices and the first lateral surface of the second energy storage device are in
  • the parallel arrangement according to the second aspect can in particular offer the advantage that the charging capacity of the parallel arrangement is increased compared to the charging capacity of a single energy storage device.
  • the parallel arrangement according to the second aspect can in particular offer the advantage that the charging capacity of the parallel arrangement can be increased by adding more of these energy storage devices with little effort.
  • the parallel arrangement according to the second aspect can in particular offer the advantage that it is possible to dispense with a separate electrical interconnection device for interconnecting the energy storage devices.
  • the first energy storage device and the second energy storage device are energy storage devices according to one of the preferred developments.
  • the first energy storage device and the second energy storage device are energy storage devices according to one of the preferred developments.
  • Energy storage device are connected in series.
  • One of these first Contact lugs of the first energy storage device is connected to one of these first contact lugs of the second energy storage device electrically, preferably cohesively.
  • This preferred development can in particular offer the advantage that the electrical voltage of the series arrangement can be increased by adding more of these energy storage devices with little effort.
  • This preferred development can in particular offer the advantage that it is possible to dispense with a separate electrical interconnection device for interconnecting the energy storage devices.
  • a battery has at least two or more of these parallel arrangements according to the second aspect, wherein the at least two parallel arrangements are connected to each other in series. At least one or more of these first contact lugs of the first parallel arrangement are each electrically, preferably materially, connected to one of these first contact lugs of the second parallel arrangement.
  • the battery according to the third aspect may in particular offer the advantage that the voltage of the battery can be increased by adding further parallel arrangements with little effort.
  • the battery according to the third aspect can be used in particular Provide advantage that can be dispensed with the interconnection of the parallel arrangements on a separate electrical interconnection device.
  • the battery according to the third aspect may in particular offer the advantage that
  • Charging capacity and / or electrical voltage to the needs of a consumer to be supplied, in particular to the needs of a motor vehicle with electric motor, can be adjusted.
  • a battery according to the third aspect has at least two or more of these series arrangements, the at least two
  • Row arrangements are connected in parallel with each other. At least one or more of these second contact lugs of the first series arrangement are each electrically, preferably materially, connected to one of these second contact lugs of the second series arrangement.
  • the battery according to the third aspect can provide, in particular, the advantage that the charging capacity of the battery by
  • the battery according to the third aspect can offer the advantage that it is possible to dispense with a separate electrical interconnection device for interconnecting the row arrangements.
  • the battery according to the third aspect may in particular offer the advantage that
  • Charging capacity and / or electrical voltage to the needs of a consumer to be supplied, in particular to the needs of a motor vehicle with electric motor, can be adjusted.
  • the battery has a control device, which for monitoring the respective electrical Voltage of the parallel arrangement is designed, which is electrically connected to two current conductors of different polarity of the same energy storage device of the first parallel arrangement and with two current conductors of different polarity of the same energy storage device of the second parallel arrangement.
  • the control device is for compensation
  • Control device formed with a microprocessor or an integrated circuit.
  • the control device is for polling
  • the control device preferably has a data memory.
  • the control device preferably has a wireless communication element.
  • Energy storage devices of the battery is reduced by to compensate for various states of charge and / or electrical voltages of the
  • Control device with only one of the energy storage devices of the various parallel arrangements sufficient. This preferred
  • Energy storage devices of the battery is reduced by, for detecting the electrical voltage of one of these parallel arrangements, the electrical connection of the control device with only one of the
  • a Stromableiters with at least a first contact lug and at least one second contact lug, preferably with a separation process and / or with a forming process, more preferably with cutting, cutting and / or bending forming, whereupon the first normal vector perpendicular to one of the first contact surfaces and a second Normal vector is aligned perpendicular to one of the second contact surfaces, and the first normal vector is arranged substantially perpendicular to the second normal vector, whereupon the current conductor is present, preferably after step S1,
  • Electrode assembly preferably after step S2,
  • step S2 the first contact surface and the second contact surface are arranged substantially perpendicular to one another.
  • the metal sheet is first cut, preferably punched, during step S2.
  • the at least two contact lugs are bent or raised during step S2, particularly preferably from the conductor leg.
  • the cohesive bonding preferably takes place during a step S3 with a friction welding method or with an ultrasonic welding method.
  • the closure of the enclosure during step S5 is carried out by a thermal joining method or by a spot welding method or by a projection welding method or by a friction welding method or by an ultrasonic welding method or by a laser welding method.
  • the envelope is materially connected to the current conductor.
  • two of these cladding moldings are connected to each other, which preferably surround the electrode assembly.
  • the steps S1 and S2 are each performed twice, whereupon two of these current conductors each having at least a first
  • step S3 is performed twice to electrically connect one of these current conductors to at least one first polarity electrode of the electrode assembly and to electrically connect another of these current conductors to at least one second polarity electrode thereof
  • the energy storage device or at least one of the current collectors has two contact lugs, which for electrical connection with
  • adjacent energy storage devices of the same battery are designed which are designed to contact adjacent energy storage devices or for contacting contact lugs of adjacent energy storage devices can be dispensed with busbars, circuit boards or other electrical interconnecting devices for interconnecting the energy storage devices. With the waiver of such electrical
  • Interconnection facilities can be the effort to interconnect the
  • Energy storage devices to a substantially cuboid battery be grouped.
  • the energy storage devices can be interconnected without further electrical interconnection devices.
  • the energy storage device produced by this method in particular, the advantage of a reduced cost in the manufacture of the battery allow by the preparation of electrical
  • Interconnection facilities can be dispensed with.
  • Energy storage device touches one of these second contact lugs of the second energy storage device
  • step S1 1, 13 arranging two of these parallel arrangements adjacent to each other such that a first lateral surface of the first parallel arrangement contacts a first lateral surface of the second parallel arrangement a first contact lug of the first parallel arrangement contacts a first contact lug of the second parallel arrangement, after step S12, S14 electrical, preferably cohesive, connecting one of the first contact lugs of the first parallel arrangement with one of the first
  • the energy storage devices to be used for step S1 1 are formed according to the first or fourth aspect of the invention or according to a preferred embodiment.
  • the at least two energy storage devices by means of their first
  • step S1 1 is performed several times, when the parallel arrangement more than two
  • the material-locking connection takes place during step S12 with a thermal joining method or with a spot welding method or with a projection welding method or with a friction welding method or with an ultrasonic welding method or with a laser welding method.
  • both the current collector of the first polarity of the energy storage devices arranged in step S1 1 and their current conductors of the second polarity are electrically and / or materially connected to one another during step S12.
  • step S12 is performed multiple times if the parallel arrangement is to have more than two energy storage devices.
  • step S13 a plurality of these parallel arrangements are combined to form a cuboid, wherein particularly preferably
  • Current conductors or contact lugs extend from a first lateral surface and from an opposite second lateral surface of the cuboid.
  • step S13 several of these parallel arrangements such that one of these second lateral surfaces of a first of these parallel arrangements and one of these second lateral surfaces of a second of these parallel arrangements lie substantially in the same plane.
  • step S13 is performed several times if the battery is to have more than two parallel arrangements.
  • the cohesive bonding preferably takes place during step S14 with a thermal joining method or with a spot welding method or with a projection welding method or with a friction welding method or with an ultrasonic welding method or with a laser welding method.
  • both the current conductors are first
  • step S14 is performed multiple times when the battery is to have more than two parallel arrangements.
  • the battery produced by this method can in particular offer the advantage that it is possible to dispense with electrical interconnection devices for interconnecting the energy storage devices.
  • the battery manufactured according to this method can in particular offer the advantage that the mechanical and / or electrical connection of the
  • step S23 electrical, preferably cohesive, connecting at least one of the second contact lugs of the first series arrangement with one of the second contact lugs of the second series arrangement, after step S23.
  • the energy storage devices to be used for step S21 are formed according to the first or fourth aspect of the invention or according to a preferred embodiment.
  • the at least two energy storage devices by means of their second
  • step S21 is performed multiple times if the series arrangement is more than two
  • the cohesive bonding preferably takes place during a step S22 with a thermal joining method or with a spot welding method or with a projection welding method or with a friction welding method or with an ultrasonic welding process or with a laser welding process.
  • both the first-polarity current conductors of the energy storage devices arranged at step S21 and their second polarity current collectors are electrically and / or materially connected to one another.
  • step S22 is performed multiple times if the series arrangement is to have more than two energy storage devices.
  • step S23 several of these series arrangements are assembled into a cuboid, wherein particularly preferred
  • Current conductors or contact lugs extend from a first lateral surface and from an opposite second lateral surface of the cuboid.
  • a plurality of these series arrangements are assembled such that one of these second lateral surfaces of a first of these series arrangements and one of these second lateral surfaces of a second of these series arrangements lie substantially in the same plane.
  • step S23 is performed multiple times if the battery is to have more than two rows.
  • the material-locking connection takes place during step S24 with a thermal joining method or with a spot welding method or with a projection welding method or with a friction welding method or with an ultrasonic welding method or with a laser welding method.
  • both the first polarity current collectors of the series arrangements arranged in step S23 and their current conductors of the second polarity are electrically and / or materially connected to one another.
  • step S24 is performed multiple times if the battery is to have more than two rows.
  • the battery produced by this method can in particular offer the advantage that it is possible to dispense with electrical interconnection devices for interconnecting the energy storage devices.
  • the battery manufactured according to this method can in particular offer the advantage that the mechanical and / or electrical connection of
  • Fig. 1 shows schematically an energy storage device according to the first
  • Fig. 2 shows schematically a preferred embodiment of
  • FIG. 3 shows further schematic views of the energy storage device according to FIG. 2, FIG.
  • Fig. 4 shows schematically two series arrangements
  • FIG. 5 schematically shows a battery with two series arrangements according to FIG. 4, FIG.
  • FIG. 6 is another schematic view of the battery of FIG. 5,
  • Fig. 7 shows schematically another battery.
  • the energy storage device 1 shows schematically an energy storage device 1 according to the first aspect.
  • the energy storage device 1 has a not shown
  • Electrode assembly a sheath 3, and two current collector 4, 4a.
  • the current collector 4 has a first contact lug 5 and a second
  • the first contact lug 5 has a first contact surface 6.
  • the second contact lug 5a has a second contact surface 6a.
  • the first normal vector ⁇ is oriented perpendicular to the first contact surface 5.
  • the second normal vector is perpendicular to the second contact surface aligned.
  • the first normal vector is oriented substantially perpendicular to the second normal vector.
  • the current collector 4a is formed in accordance with the current collector 4. It is not a mandatory part of the invention that the current conductors 4, 4a extend in the same direction from the enclosure 3. The current collector 4a could also extend in the opposite direction from the enclosure 3, but this is not shown.
  • FIGS. 1 a and 1 b show different views of the same
  • FIG. 2 shows schematically a preferred embodiment of
  • the illustrated energy storage device essentially corresponds to the energy storage device according to FIG. 1, but the current conductors 4, 4 a extend out of the sheath 3 in the opposite direction.
  • the current conductors 4, 4a are formed with a metal sheet, preferably with an aluminum sheet or with a copper sheet.
  • the current conductors 4, 4a each have a conductor leg 10, 10a.
  • the contact lugs 5, 5a extend from the arrester arm 10.
  • the arrester legs 10, 10a extend in the opposite direction with respect to the first lateral surface 7. As a result, the shading of the energy storage device is simplified.
  • the envelope 3 is formed with two composite films.
  • the envelope 3 has two connecting sections 8, 8a, in which the two composite films are connected to each other in sections cohesively.
  • the current conductors 4, 4 a are integrally connected to the enclosure 3.
  • the current collector 4 has two first contact lugs 5.
  • the first contact lugs 5 each have one first contact surface 6 for contacting a first contact surface of a
  • the two first contact lugs 5 extend from the same edge of the arrester arm 10.
  • the first two contact lugs 5 of the current collector 4 serve the more stable mechanical connection with another of these
  • the current collector 4 has two second contact lugs 5a.
  • the second contact lugs 5a each have a second contact surface 6a for contacting a second contact surface of an adjacent one of these energy storage devices.
  • the energy storage device 1 can be connected in parallel with two other of these energy storage devices in parallel.
  • FIG. 3 shows further schematic views of the energy storage device 1 according to FIG. 2.
  • FIG. 3b shows that the first contact surface 6 protrudes beyond the first lateral surface 7 in the direction of another, not shown, adjacent one of these energy storage devices.
  • the electrical, preferably cohesive, connection of the first contact surface 6 with a first contact surface of the adjacent energy storage device is simplified.
  • Figure 4 shows schematically two series arrangements 21, 21 a with
  • first contact lugs 5 and second contact lugs 5a apply the comments on the figures 2, 3rd , in each of the two series arrangements 21, 21 a, the second lateral surfaces 12 of the individual energy storage devices are arranged substantially in the same plane.
  • the two series arrangements 21, 21 a are provided to be connected in parallel with one another, to form a battery 30.
  • the energy storage devices 1, 1 a of the two series arrangements 21, 21 a are each connected in series.
  • first contact lugs 5 of adjacent energy storage devices 1, 1 a are electrically connected to each other, preferably cohesively. So are two adjacent each
  • Energy storage devices 1, 1a interconnected via two pairs of first contact lugs 5, whereby the current density per contact lug 5 is reduced.
  • Figure 5 shows schematically a battery 30 with two series arrangements 21, 21 a of FIG. 4. Concerning the individual energy storage devices 1, 1 a and the formation of the current conductors 4, 4a with Ableitschenkeln 10, first contact lugs 5 and second contact lugs 5a apply the statements to the figures 2, 3. Regarding the individual row arrangements 21, 21 a, the comments on Figure 4 apply.
  • the two series arrangements 21, 21 a are to a cuboid
  • the joining device 41 is configured with sonotrode and anvil for ultrasonic welding.
  • FIG. 6 schematically shows a further schematic view of the battery 30 according to FIG. 5.
  • the two row arrangements 21, 21a are electrically connected to one another.
  • FIG. 7 schematically shows a further battery 30 manufactured with three of these series arrangements 21, 21a, 21b. Compared to the battery according to the figure 6, the charge capacity of the illustrated battery is increased.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

L'invention concerne un dispositif d'accumulation d'énergie (1) pourvu d'un ensemble d'électrodes (2) électrochimique sensiblement parallélépipédique permettant de fournir de l'énergie électrique. Ce dispositif est pourvu d'une enveloppe (3) permettant de délimiter l'ensemble d'électrodes (2) par rapport aux zones environnantes, et d'au moins deux collecteurs de courant (4, 4a) de polarité électrique différente, lesquels s'étendent respectivement au moins sur certaines parties à partir de l'enveloppe (3), et au niveau desquels la tension électrique de l'ensemble d'électrodes électrochimiques (2) peut être prélevée. Les deux collecteurs de courant (4, 4a) ou plus présentent respectivement au moins une première languette de contact (5) et au moins une deuxième languette de contact (5a), et les deux languettes de contact (5, 5a) ou plus sont configurées chacune pour établir une connexion électrique, de préférence par liaison de matière, avec respectivement un autre de ces dispositifs d'accumulation d'énergie (1a, 1b), et les deux languettes de contact (5, 5a) ou plus présentent respectivement une surface de contact (6, 6a) permettant d'entrer en contact avec un dispositif d'accumulation d'énergie voisin de ces dispositifs d'accumulation d'énergie (1a, 1b). Un premier vecteur normal N1 est orienté perpendiculairement à la première surface de contact (6) et un deuxième vecteur normal N2 est orienté perpendiculairement à la deuxième surface de contact (6a), le premier vecteur normal étant orienté sensiblement perpendiculaire au deuxième vecteur normal.
PCT/EP2014/001838 2013-07-12 2014-07-03 Dispositif d'accumulation d'énergie pourvu de deux collecteurs de courant et procédé permettant de produire un dispositif d'accumulation d'énergie WO2015003787A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013011685.6A DE102013011685A1 (de) 2013-07-12 2013-07-12 Energiespeichereinrichtung mit zwei Stromableitern und Verfahren zum Herstellen der Energiespeichereinrichtung
DE102013011685.6 2013-07-12

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WO2015003787A3 WO2015003787A3 (fr) 2015-03-19

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EP3588614A1 (fr) * 2018-06-21 2020-01-01 Hilti Aktiengesellschaft Cellule en sachet et empilement

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CH86465A (de) * 1919-07-26 1921-02-01 Eugen Dr Alber Batterie aus leicht auswechselbaren Elementen.
JPS6319757A (ja) * 1986-07-11 1988-01-27 Yuasa Battery Co Ltd 鉛蓄電池
JP4617672B2 (ja) * 2003-12-26 2011-01-26 トヨタ自動車株式会社 ラミネート電池モジュールとその製造方法
DE102009037727A1 (de) 2009-08-17 2011-02-24 Li-Tec Battery Gmbh Verfahren zum Herstellen eines Elektrodenstapels
JP2012221804A (ja) * 2011-04-11 2012-11-12 Hitachi Maxell Energy Ltd 組電池

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