WO2012062396A1 - Batterie comportant un ensemble de cellules - Google Patents

Batterie comportant un ensemble de cellules Download PDF

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Publication number
WO2012062396A1
WO2012062396A1 PCT/EP2011/005182 EP2011005182W WO2012062396A1 WO 2012062396 A1 WO2012062396 A1 WO 2012062396A1 EP 2011005182 W EP2011005182 W EP 2011005182W WO 2012062396 A1 WO2012062396 A1 WO 2012062396A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
individual cells
angled
cooling plate
battery according
Prior art date
Application number
PCT/EP2011/005182
Other languages
German (de)
English (en)
Inventor
Norbert Bachmann
Martin Ertle
Rainer Kaufmann
Arnold Lamm
Jens Meintschel
Dirk Schröter
Original Assignee
Daimler Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Ag filed Critical Daimler Ag
Publication of WO2012062396A1 publication Critical patent/WO2012062396A1/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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a battery with a cell assembly according to the preamble of patent claim 1.
  • One pole of the single cell is electrically conductively connected to one arrester element each and forms a pole contact of the single cell.
  • Such a trained single cell is commonly referred to as Pouch- or Coffeebag- cell.
  • the respective arrester elements of a plurality of such individual cells are electrically conductively connected to one another and interconnected in series and / or in parallel.
  • the arrangement of individual cells thus formed is provided with a cooling and, for example, an electronic circuit arrangement and arranged in a housing.
  • Welding process such as an ultrasonic, laser and / or a
  • the sheet-like arrester elements are arranged between a die and a die and pressed together and at least one of the two Ableiteriata a recess for forming a positive and positive connection is formed.
  • the applicant's DE 10 2010 013 023 which has not yet been published, describes a battery having a cell network comprising a plurality of individual cells connected in series and / or in parallel with one another.
  • a cooling plate is arranged pole side on the individual cells.
  • the arrester lugs are by means of a force and
  • non-positive and positive connection clamping elements which are designed for example as screws and pressure bars.
  • the same clamping elements are used simultaneously for non-positive and positive connection of the Ableiterfahen with the
  • Cooling plate Between the cooling plate and the superposed Ableitfahen an electrically insulating heat conducting foil is arranged, so that the Ableitfahen are thermally coupled to the cooling plate by means of positive and positive compression.
  • At least one cooling plate is arranged on the pole side of the individual cells.
  • the arrester lugs electrical poles of the individual cells are thermally coupled to the cooling plate.
  • At least one of the collector lugs is angled in sections so that at least a first portion of the Ableitfahne runs parallel to the cooling plate.
  • the individual cells are in
  • Frame elements arranged which are so non-positively compressible by means of first clamping elements together that the Ableitfahen adjacent individual cells are electrically interconnected. So that are the formation of the cell network within the frame elements
  • the frame element is made at least in the contact region of the Ableitfahen of electrically insulating material, such as plastic and fiber-reinforced plastic in particular, to electrically isolate the live lead tabs of the frame elements pressed together, which form a housing of the cell assembly. This reduces the risk of injury from electrical shock during installation and use of the battery.
  • electrically insulating material such as plastic and fiber-reinforced plastic in particular
  • the arrester lugs of adjacent individual cells are by means of the frictional
  • the arrester lugs of the individual cells in the cell assembly are provided.
  • the first section of at least one of the discharge lugs of one of the individual cells is angled in the opposite direction to the first section of at least one other of the discharge lugs of this individual cell.
  • the arrester lugs have a flat surface due to the lack of cohesive connections for electrical contacting, such as welding, the cooling plate lies flat and flat on the first section of the arrester lug.
  • a large heat transfer surface between the cooling plate and Ableiterfahne is given, bringing a good thermal connection of the Ableiterfahen is ensured to the cooling plate for cooling the battery.
  • in an arrangement of an introduced between the Ableiterfahen and the cooling plate heat conducting due to the flat surface of the Ableitfahen damage to the heat conducting foil and thus electrical short circuits can be avoided.
  • the individual cells are arranged such that the respective first sections of the discharge lugs of adjacent individual cells overlap.
  • the two discharge lugs of the single cell are formed asymmetrically.
  • One of the two arrester lugs is flat and flat.
  • the other of the two collector lugs is so partially angled and thus multiple times that a second portion of the Ableitfahne is angled 90 degrees relative to the first portion of the Ableitfahne, so this
  • Ableiterfahne has a U-shaped cross-sectional profile.
  • the single cells are in the
  • the arrester lugs of adjacent individual cells can be electrically conductively connected to one another in a particularly simple manner by means of the axial compression of the individual cells.
  • the cooling plate which is arranged in particular above the cell assembly, can be frictionally and / or positively connected to the frame element by means of second clamping elements.
  • the first portion of the Ableitfahne non-positively and / or positively connected to the cooling plate to the Ableiterfahne to the cooling plate thermally conductive couple.
  • the example designed as a self-tapping plastic screws second clamping elements are feasible through corresponding recesses in the cooling plate and engage in each one of the frame elements, in each of which one of the individual cells is at least partially arranged.
  • the frame members thus serve in addition to the mechanical fixation of the individual cells in the cell assembly as an abutment in the non-positive and positive connection between Ableiterfahen and cooling plate. This eliminates additional components in the production of the battery, which costs are saved.
  • the frame element may have a further corresponding recess.
  • the cooling plate is electrically insulated from the live discharge lugs by means of an electrically insulating and thermally conductive heat conducting foil.
  • the heat-conducting foil is arranged in the intermediate region between the cooling plate and the first sections of the discharge lugs running parallel to the cooling plate.
  • the second clamping elements are also made of electrically insulating material to ensure the electrical insulation of the cooling plate.
  • the arrester lugs have a corrosion protection coating at least in the region of the first and / or the second section, so that corrosion can be avoided and, consequently, a constant electrical contact resistance between the current drainage lugs can be realized over the entire service life of the battery ,
  • nickel, tin, and / or gold coatings are used.
  • the arrester lugs are at least in the region of the first and / or the second portion against ingress of foreign substances sealed.
  • Sealing elements for. As finishes, silicones and / or potting compounds provided.
  • the compression of the frame elements with the individual cells arranged therein serves only for electrical interconnection of the individual cells with one another.
  • a non-positive and positive connection between the frame member and the cooling plate is not provided in this alternative embodiment of the invention.
  • the frame elements are arranged in the respective intermediate region of adjacent individual cells of the cell assembly in such a way that the discharge lugs of the individual cell are positively and / or positively clamped between in each case two frame elements.
  • individual cells which are formed according to the already described Coffeebag or Pouch construction, have a sealing seam protruding from the outer cell in the peripheral area of the individual cell and are welded together.
  • This protruding seal seam can be clamped in addition to the conductor tabs of the individual cells between the two frame elements for fixing the individual cell.
  • the individual cell can be arranged in each case half side in one of the two frame elements. A section of the discharge tabs which projects straight from the individual cells is passed through the films welded together. The frame element spaces the straight out standing
  • Sections of the collector lugs of adjacent single cells from each other are Sections of the collector lugs of adjacent single cells from each other.
  • the cell assembly thus formed from a plurality of adjacent individual cells uses a space available in a particularly advantageous manner and has a high mechanical stability.
  • the frame element consists of two half-frame elements, which have a respective width which corresponds to half the distance between the straight-standing sections of the discharge lugs of adjacent individual cells.
  • the frame elements and / or the half-frame elements are each provided with first recesses for receiving the / s first clamping elements / s, which are designed for example as clamping screws, tie rods, rivets and or spring clip, so that by means of the first clamping elements, the frame elements and / or the half-frame elements in the axial direction can be pressed together positively.
  • the axial direction runs along a surface normal of the individual cell designed in particular as a flat cell, wherein the individual cells are aligned parallel to one another in the cell assembly.
  • the individual cells can be fixed in a particularly simple manner in a cell composite.
  • the arrester lug of the single cell is angled on the outside around the frame element and / or the half frame element. It supports the frame element or the
  • Half frame element inside the first and / or the second portion of the Ableiterfahne from.
  • the angled portions of the Ableiterfahen on the frame element or the half-frame elements ensures that in the non-positive compression of the frame members or the half-frame elements, the Ableitfahen the individual cells are brought into an electrically conductive connection with each other.
  • Frame element or the half-frame element is connected to the cooling plate thermally conductive.
  • a spring element is provided to further improve the electrically conductive connection between the Ableiterfahen and / or to improve the thermally conductive connection between Ableiterfahne and cooling plate, which is designed for example as a tension mat, elastic fleece, leaf spring and / or plate spring.
  • the spring element is arranged between the first and / or the second portion of the Ableitfahne and the frame member and / or the half-frame member, so that the spring element exerts a spring force on the first and / or second portion of the Ableiterfahne.
  • the spring force points away from the frame element and / or the half-frame element, so that the first and / or second section of the
  • Ableiterfahne is biased in this direction. This ensures that setting losses in the press fit of the non-positive and / or positive connections between the frame elements or half frame elements with each other and / or between the frame elements or half frame elements and the cooling plate can be compensated, whereby an electrically and / or thermally conductive coupling of the Ableiterfahen with each other and / or the Ableiterfahen is ensured with the cooling plate.
  • a stiffening element is arranged in the frame element in order to allow sufficiently high pressing forces in the press fit of the non-positively and / or positively connected parts comprising the frame elements or half-frame elements and / or the cooling plate.
  • the stiffening element is expediently in producing the frame element in the same way by means of a
  • the stiffening element has a higher rigidity than the suitably made of plastic frame member and is made for example of a metal.
  • the stiffening element has a bore, in particular in the form of a threaded bore, which accommodates the second clamping element designed in particular as a screw in order to further improve the strength of the non-positive and positive connection between frame element or half-frame element and cooling plate.
  • the battery is according to one embodiment of the invention to a vehicle battery, in particular a battery for a vehicle with electric drive, hybrid drive or a fuel cell vehicle.
  • the battery is a lithium-ion battery. Due to the low weight, the high safety and the reduced costs, the battery is preferably suitable for use in a vehicle.
  • Fig. 1 shows schematically an exploded view of a battery with a
  • a cooling plate is pole side attached to the cell assembly and is frictionally and positively connected with frame members
  • FIG. 2 schematically shows a perspective view of two individual cells according to the first exemplary embodiment, wherein the frame element is arranged between the individual cells and in which the arrester lugs of the two adjacent individual cells are angled in opposite directions in sections such that at least the respective first sections of the collector lugs of FIG overlap two adjacent single cells,
  • FIG. 3 is a schematic longitudinal view of the cell assembly according to the first embodiment
  • Fig. 4 shows schematically an exploded view of a battery with a
  • Cell composite according to a second embodiment wherein the cell composite is formed of a plurality of single cells and a Ableiterfahne the single cell is angled outside a frame element,
  • Fig. 5 schematically shows a perspective view according to the second
  • Embodiment of Figure 4 trained Einzelle which is half loaded in a frame member
  • Fig. 6 shows an exploded view of the according to the second
  • Embodiment of Figure 4 formed single cell with the adjacent frame member
  • Fig. 7 shows schematically a longitudinal sectional view of the according to the second
  • FIG. 8 shows schematically an enlarged detail of the longitudinal sectional view according to FIG. 7,
  • Fig. 9 schematically an exploded view of a third
  • Fig. 10 shows schematically an exploded view of the single cell according to the third
  • Fig. 11 shows schematically a longitudinal sectional view of one according to the third
  • Embodiment of Figure 9 formed cell composite of single cells
  • FIG. 12 is a schematic exploded view of a battery according to a
  • 13 is a schematic longitudinal sectional view of a cell assembly according to the fourth exemplary embodiment according to FIG. 12, in which the stiffening element is arranged in the respective frame element,
  • FIG. 14 is a schematic cross-sectional view of a cell assembly according to the fourth exemplary embodiment according to FIG. 12, in which the stiffening element is arranged in the respective frame element,
  • Fig. 15 shows schematically a detail of a longitudinal section of a
  • Figures 1 to 3 show a first embodiment of the invention, in which a plurality of designed as flat cells of Coffebag- or Pouch construction
  • Single cells 1 side by side and parallel to each other to form a cell composite Z of a battery is arranged.
  • the individual cells 1 are formed in accordance with the already described flat Coffeebag construction, in which the individual cell 1 has a foil-like and electrically insulating shell, which is closed after evacuation in the peripheral edge region by means of a weld and thus form a single cell housing 3.
  • Single cell housing 2 has in the peripheral edge region on a caused by the welding of the film-like envelope sealed seam 2.1.
  • the flat cell referred to below as a single cell 1 consists of an electrode stack 3 of electrochemically active and juxtaposed foils arranged in the interior of the individual cell 1, which, as shown in FIG.
  • Single cell housing 2 is surrounded.
  • the pole contacts of the electrode stack 3 of one polarity are electrically conductively connected to a respective electrically and thermally conductive Ableiterfahne 4, which thus form the poles of the single cell 1 in a manner not shown.
  • a heat generated within the individual cell 1, in particular during operation, charging and / or discharging, can be dissipated to the outside by means of the arrester lug 4 in order to save space.
  • Each individual cell 1 of the cell assembly Z has, as shown in particular in Figure 1, two sheet-shaped and electrically conductive Ableiterfahnen 4, which are performed by the film-like shell of the single cell housing 2.
  • One of the single cell 1 over an edge of the single cell housing 2 straight out standing section 4.1 each one of the arrester lugs 4 is flat and aligned parallel to the single cell 1.
  • the Ableiterfahne 4 is angled in sections by 90 degrees and has a first angled section 4.2, which are opposite to the straight out
  • Section 4.1 of the arrester lug 4 is angled 90 degrees.
  • the first angled section 4.2 of the arrester lug 4 runs parallel to at least one polar plate 5 mounted on the pole side, to which the arrester lug 4 is thermally coupled for cooling the battery.
  • the first angled section 4.2 of one of the two arrester lugs 4 of the single cell 1 in an opposite direction relative to the first angled section 4.2 of the other of the two Ableitfahnen 4 of
  • each two individual cells 1 of the cell composite Z is in each case a frame element 6, as shown in particular in Figure 2, respectively.
  • the frame element 6 is made either completely or at least in the contact region of the collector lugs 4 made of electrically insulating material and in particular plastic or fiber-reinforced plastic.
  • the arrester lug 4 of the single cell 1 is so partially to a
  • the frame element 6 has a width such that the sections 4.1 of the arrester lugs 4 which are just protruding out of two adjacent individual cells 1 in the cell network Z are spaced apart from one another at a corresponding distance B.
  • Each individual cell 1 of the cell assembly Z is, as shown in particular in FIGS. 1 and 3, arranged between two frame elements 6 and inserted into them.
  • Frame member 6 has an inner recess, which has a substantially rectangular cross-section and is dimensioned such that a raised portion of the single cell 1, the dimensions of which significantly in the Single cell 1 arranged electrode stack 3 is determined by the frame member 6 is included.
  • the single cell 1 is from both sides in each one of
  • Frame elements 6 is inserted, so that the single cell 1 can be arranged on one side in the respective one of the frame elements 6.
  • Two individual cells 1 adjacent in the cell assembly Z are, as shown in FIGS. 1 to 3, separated from one another by means of the frame element 6.
  • the arrester lug 4 of one of the two adjacent individual cells 1 is opposite the arrester lug 4 of the other of the two adjacent individual cells 1 in the opposite direction
  • Sections 4.2 given that produces an electrically and thermally conductive connection between the two Ableiterfahnen 4 adjacent single cells 1 for interconnection of the individual cells 1 with each other.
  • a corrosion protection coating for example, nickel, tin and / or gold provided.
  • the respective half-side inserted into the frame members 6 single cells 1 are by means of a positive compression of the frame members 6 with each other in the
  • first clamping elements 7 are provided, which are designed in particular as screws, tie rods, rivets and / or spring clips.
  • the frictional compression of the frame elements 7 takes place in a direction perpendicular to the single cell 1 axial direction A.
  • the frame member 6 has a continuous first recess 6.2, the inner dimensions for receiving the first clamping element 7 are formed accordingly.
  • the first recess 6.2 is arranged in a respective corner of the frame member 6.
  • the individual cells 1 are fixed in the cell assembly Z.
  • the peripheral region of the individual cell 1 circumferential sealing seam 2.1 and the straight out standing sections 4.1 of the Ableitfahen 4 of the single cell 1 are on both sides of each one of the frame members 6 at.
  • the sealed seam 2.1 and the sections 4.1 of the discharge lugs 4 that extend straight out of each individual cell 1 are jammed between the two adjacent frame elements 6.
  • a frame-shaped closing element 9 is arranged at each end of the cell assembly Z, which limits the cell assembly Z and serves as an abutment in the axial compression of the frame members 6.
  • the cooling plate 5 is parallel to the first angled portions 4.2 of
  • FIG. 1 shows a cell network Z in which each individual cell 1 has two respective collector lugs 4. The individual cells 1 are aligned parallel to one another, so that the respective first angled sections 4.2 of the collector lugs 4 form two mutually parallel rows, which are thermally coupled to a respective cooling plate 5 arranged above.
  • these joining regions and in particular the regions of the first angled sections are additionally not shown in detail 4.2 by introducing a potting compound, applying a coating and / or arranging a sealing element against the ingress of
  • Ableitfahnen 4 is in a manner not shown to avoid short circuits, a thermally conductive and electrically insulating heat conducting foil 12, which is made in particular of plastic, arranged.
  • the cooling plate 5 is connected to the frame members 6 positively and / or non-positively by means of second clamping elements 8, the
  • the frame member 6 has for receiving the second clamping element 8, a second recess 6.3 and is used in the non-positive and / or positive clamping of the frame member 6 with the cooling plate 5 as an abutment. Accordingly, the
  • Cooling plate 5 a third recess 5.1, through which the second clamping element 8 is feasible.
  • Sections 4.2 of the collector lugs 4 adjacent individual cells 1 are in the non-positive and positive clamping between the frame member 6 and the cooling plate 5 to each other pressed, whereby the Ableitfahnen 4 adjacent single cells 1 electrically connected non-positively and positively connected and simultaneously thermally conductively connected to the cooling plate 5.
  • the Ableitfahnen 4 adjacent single cells 1 electrically connected non-positively and positively connected and simultaneously thermally conductively connected to the cooling plate 5.
  • Cooling plate 5 disposed heat conducting foil 12, the frame member 6 between the second recesses 6.3 a stepped lowered portion 6.4, so that the frame member 6 is spaced from the cooling plate 5 in the lowered portion 6.4, whereby the degree of compression of the relatively soft
  • Heat-conducting foil 12 is limited.
  • a spacer element (not shown) may be provided which spaces the cooling plate 5 and the frame element 6 in the region of the first angled sections 4.2 and thus prevents excessive deformation of the heat-conducting film 12.
  • the second clamping element 8 is designed in particular as a self-tapping plastic screw to ensure the electrical insulation of the cooling plate 5.
  • the two individual cells 1 arranged on the end of the cell assembly Z each have an end-side arrester lug 4 'with an extended first angled section 4.2' which forms a pole contact of the cell assembly Z in each case.
  • FIGS. 4 to 8 show a second exemplary embodiment of the cell network Z formed from individual cells 1.
  • the single cell 1 formed according to the second embodiment has two, as shown in particular in Figure 6, asymmetrically formed Ableiterfahen 13, 14.
  • a Ableiterfahne 13 of the two Ableiterfahnen 13, 14 of the single cell 1 is flat and flat and has straight from the foil-like shell of the
  • the other Ableiterfahne 14 is partially angled away in each case by 90 degrees to the frame member 6 on the outside, so that two edges 14.3 of the Ableiterfahne 14 are formed, each parallel to one of
  • Frame edges 6.1 of the frame element 6 run.
  • the thus formed arrester lug 14 has three sections 14.1, 14.2, 14.4, wherein a first angled section 14.2 is angled at 90 degrees relative to a section 14.1 which projects straight from the individual cell 1, and a second angled section Section 14.4 is angled 90 degrees with respect to the first angled section 14.2.
  • the second angled section 14.4 runs parallel to the straight section 14.1.
  • the arrester lug 14 thus has, as shown in FIG. 6, a trough-shaped profile with a substantially U-shaped cross-sectional profile, as shown in FIG.
  • the individual cells 1 thus formed are arranged side by side and parallel to one another and in each case rotated through 180 degrees in the cell composite Z.
  • the frame member 6 supports the inside of the first and the second section 14.2, 14.4 of the Ableiterfahne 14 and serves as an abutment, so that in the power and
  • the cooling plate 6 can be arranged on the cell assembly Z, which, as in the already described first embodiment, parallel to the respective first angled portions 14.2 of the Ableiterfahen 14 extends.
  • the individual cells 1 arranged on the end of the cell assembly Z each have, as shown in FIGS. 4 and 7, an end-side arrester lug 14 'with an extended first angled portion 14.2' which forms the pole contact of the cell assembly Z.
  • Figures 9 to 11 show a third embodiment of the invention, in which the frame member 6 is formed of two half-frame elements 6.5.
  • the half-frame elements 6.5 have a respective width, which corresponds to half of the distance B.
  • the two collector lugs 14 of the single cell 1 of the third embodiment are angled in sections by 90 degrees.
  • the arrester lug 14, as shown in Figure 10 on the outside to the side of the single cell 1 adjacent Angled half frame element 6.5, so that the Ableiterfahne 14 has two edges 14.3 which extend parallel to the frame edges 6.1 of the half frame element 6.5.
  • Both collector lugs 14 of the single cell 1 have a trough-shaped profile with a substantially U-shaped cross-section.
  • the two Ableiterfahnen 14 of the single cell 1 are angled in the opposite direction, so that the first angled
  • Half frame elements 6.5 can be pressed together in such a way that the second angled sections 14.4 of the conductor lugs 14 of adjacent individual cells 1, as shown in Figure 11, abut each other and non-positively and positively and are electrically connected.
  • the half-frame elements 6.5 support the inside of each adjacent first and second sections 14.2, 14.4 and serve as an abutment in the axial compression.
  • the half-frame element 6.5 has a recess 6. 6, which has dimensions corresponding to the collector lug 14.
  • the second angled section 14.4 of the arrester lug 14 of the single cell 1 inserted in the half-frame element 6.5 closes flush with a surface of the
  • Half frame element 6.5 from, so that unwanted clamping forces in the axial
  • Frame member 6 has a stiffening element 11 which is made of a stronger material than the frame member 6 is shown.
  • the stiffening element 11 consists in particular of metal and is already introduced into the frame element 6 during the production of the frame element 6 by means of an injection molding process.
  • the stiffening element 11 has a to the second clamping element eighth
  • the electrically insulating and thermally conductive heat-conducting foil 12 is arranged.
  • Figure 15 shows a fifth embodiment of the invention, in which between the first angled portion 4.2 of Ableiterfahne 4 and the frame member 6, a spring element 10 is arranged, which is in particular designed as a tension mat, elastic fleece, leaf spring or disc spring.
  • the clamping element 10 exerts spring force on the overlapping and superimposed first angled sections 4.2, so that the first angled section 4.2 of the Ableiterfahne 4 in one of the
  • Frame element 6 is biased pathbreaking direction. So are setting losses in the interference fit of non-positive and positive connection between the cooling plate 5, heat-conducting foil 12, Ableiterfahne 4 and frame element 6 compensated.
  • FIGS. 1 to 15 can be combined with one another. In particular, it is conceivable between the second
  • Section 14.4 of the Ableitfahne 14 and the frame member 6 to arrange a spring element 1 1 to compensate for setting losses in the axial compression of the frame members 6 and to ensure an electrically conductive contact of the Ableiterfahen 14 in the axial compression.
  • the frame member 6 may be formed in a manner not shown from half-frame elements 6.5, the second recesses 6.3, in which engages the second clamping element 8 for fixing a cooling plate 5.

Abstract

Batterie comportant un ensemble de cellules (Z) qui contient une pluralité de cellules individuelles (1) montées en série et/ou parallèles, au moins une plaque de refroidissement (5) étant disposée sur les cellules individuelles (1) côté pôle. Des collecteurs de courant (4, 13, 14) de pôles électriques des cellules individuelles (1) sont thermiquement couplés à la plaque de refroidissement (5). Au moins un des collecteurs de courant (4,14) forme partiellement un angle de telle sorte qu'au moins une première partie (4.2, 14.2) du collecteur de courant (4, 14) s'étend parallèlement à la plaque de refroidissement (5). Selon l'invention, les cellules individuelles (1) sont disposées dans des éléments-cadre (6) qui peuvent être assemblés à force au moyen de premiers éléments de serrage (7) de telle sorte que les collecteurs de courant (4, 13, 14) de cellules individuelles (1) voisines sont électriquement reliés entre eux.
PCT/EP2011/005182 2010-11-10 2011-10-15 Batterie comportant un ensemble de cellules WO2012062396A1 (fr)

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DE201010050981 DE102010050981A1 (de) 2010-11-10 2010-11-10 Batterie mit einem Zellverbund
DE102010050981.7 2010-11-10

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WO2012062396A1 true WO2012062396A1 (fr) 2012-05-18

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DE102015007129A1 (de) * 2015-06-02 2016-12-08 Daimler Ag Einzelzelle, elektrochemischer Energiespeicher und Verfahren zur Herstellung einer Einzelzelle
DE102016005870A1 (de) 2016-05-10 2017-02-16 Daimler Ag Zellblock für eine Batterie mit zumindest einem Distanzelement
US10756315B2 (en) * 2016-05-30 2020-08-25 Amogreentech Co., Ltd. Heat-radiating cartridge and electric car battery pack using same
DE102017216471B4 (de) * 2017-09-18 2021-02-04 Audi Ag Montagevorrichtung zum elektrischen Kontaktieren mindestens einer Zellfahne mindestens eines elektrochemischen Speichers und Verfahren zum elektrischen Kontaktieren mindestens eines elektrochemischen Speichers
CN110176571A (zh) * 2019-06-20 2019-08-27 湖北金泉新材料有限责任公司 连接片、包含其的电池及电池的组装方法

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