EP4320679A1 - Procédé de fabrication de module de batterie, module de batterie et appareil de fabrication de module de batterie - Google Patents

Procédé de fabrication de module de batterie, module de batterie et appareil de fabrication de module de batterie

Info

Publication number
EP4320679A1
EP4320679A1 EP22720995.4A EP22720995A EP4320679A1 EP 4320679 A1 EP4320679 A1 EP 4320679A1 EP 22720995 A EP22720995 A EP 22720995A EP 4320679 A1 EP4320679 A1 EP 4320679A1
Authority
EP
European Patent Office
Prior art keywords
battery cells
cell
battery
holding device
holding
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP22720995.4A
Other languages
German (de)
English (en)
Inventor
Jochen Hantschel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ElringKlinger AG
Original Assignee
ElringKlinger 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 ElringKlinger AG filed Critical ElringKlinger AG
Publication of EP4320679A1 publication Critical patent/EP4320679A1/fr
Pending legal-status Critical Current

Links

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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • 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 present invention relates to a method for producing a battery module.
  • the object of the present invention is to provide a method for producing a battery module with which a battery module, which preferably has increased durability, can be produced simply and inexpensively.
  • this object is achieved by a method for producing a battery module having the features of claim 1 .
  • the method for manufacturing a battery module preferably includes the following:
  • Potting the battery cells with a potting material the potting material preferably hardening and/or crosslinking after the potting and a potting body being formed by curing and/or crosslinking the potting material.
  • the potting material comprises or is formed from, for example, a polyurethane material or an epoxy resin material.
  • the potting material is a one-component material, a two-component material or a multi-component material.
  • the casting material is a two-component material with a hardener, in particular a crosslinking agent.
  • the potting material is heat-curing and/or moisture-curing.
  • the potting material preferably has high thermal conductivity.
  • a thermal conductivity of the potting material is preferably greater than approximately 0.5 W/m*K, for example greater than approximately 0.7 W/m*K.
  • the battery cells are preferably circular-cylindrical battery cells, in particular circular-cylindrical round cells.
  • the battery cells are preferably at least approximately rotationally symmetrical to a longitudinal axis thereof.
  • each of the battery cells preferably comprises two cell poles, which are arranged in the area of a cell head of the battery cells.
  • the battery cells preferably each comprise a cell head and a cell foot.
  • the cell head and the cell base of a respective battery cell are preferably arranged at opposite ends of the battery cells. It can be favorable if the battery cells each include a cell housing in which a cell coil is arranged.
  • the cell housing of a battery cell preferably includes a cell head cover, a cell floor and a cell casing.
  • the cell housing of a battery cell is preferably formed from a metallic material, for example steel.
  • the cell housing preferably has corrosion protection.
  • the battery cells are positioned relative to one another, in particular essentially parallel to one another, and/or relative to the holding device before they are cast by means of a holding device.
  • the battery cells are preferably positioned relative to one another by means of the holding device in such a way that the longitudinal axes of the battery cells are arranged essentially parallel to one another.
  • the battery cells are arranged parallel to one another in such a way that the battery cells are arranged as densely as possible.
  • the battery cells are arranged with a packing density in the range from approximately 60% to approximately 90%, for example with a packing density in the range from approximately 70% to approximately 80%.
  • the battery cells are guided in a direction running parallel to the longitudinal axes of the battery cells in order to position them in the holding device.
  • the battery cells are guided in particular by means of a guiding and/or aligning device of the holding device.
  • the battery cells are positioned by means of the holding device in such a way that the cell heads of the battery cells are arranged essentially in one positioning plane.
  • the battery cells can have length tolerances in a direction running parallel to their longitudinal axes.
  • the battery cells prefferably have length tolerances of approximately 0.5 mm in the direction running parallel to their longitudinal axes.
  • the cell heads of the battery cells in a positioning plane, electrical connection of the battery cells by means of cell connectors, in particular bonding of the battery cells, can be facilitated and/or accelerated.
  • a compensation of length tolerances of the battery cells in the area of the cell heads of the battery cells can thus preferably be achieved.
  • a length tolerance of the battery cells preferably only has an effect in the area of the cell bases of the battery cells.
  • the battery cells are positioned by means of the holding device in such a way that the cell head covers of the cell housings of the battery cells are arranged essentially in one positioning plane.
  • a deviation of the cell heads of the battery cells and/or the cell head covers of the cell housings of the battery cells from the positioning plane is preferably at most approximately 0.2 mm, in particular at most approximately 0.1 mm.
  • the battery cells of a battery module are preferably electrically connected to one another in parallel and/or in series by means of cell connectors.
  • a cell connector includes, for example, a bonded connection and/or a welded connection or is formed by these.
  • the distance between the cell poles of adjacent battery cells is constant and/or if the cell heads of the battery cells deviate from the positioning plane by the smallest possible amount.
  • the battery cells are held and/or gripped by their cell heads by means of the holding device.
  • an upper end area of the cell housing of the battery cells is understood to mean, in particular, an end area which encompasses the cell head of the battery cells or is adjacent to it.
  • the battery cells are held and/or gripped by the holding device only on the cell head cover and/or only on an upper end area of the cell casing of a respective cell housing, for example on at most approximately 25% of a surface of the cell casing on the upper end area of the cell housing.
  • the holding device preferably comprises a plurality of holding elements, with each holding element being designed in such a way that one battery cell can be held and/or gripped on the cell head cover of the cell housing of the battery cell.
  • a surface of a holding element of the holding device which is brought into contact with a cell head of the battery cell and/or with a cell head cover of a cell housing of the battery cell when holding and/or gripping a battery cell, is preferably essentially complementary to a surface of the battery cell on the cell head and/or or a surface of the cell head cover of the cell case of the battery cell.
  • the battery cells are held and/or gripped magnetically, electromagnetically, pneumatically or mechanically by means of the holding device.
  • the battery cells are held by the holding device until the casting material is crosslinked in such a way that a position of the battery cells is fixed relative to one another and/or relative to a casting mold.
  • the battery cells are held by the holding device for at least approximately 5 minutes, for example at least approximately 10 minutes, while the casting material hardens and/or crosslinks.
  • the battery cells are held by the holding device, for example, until the potting material is at least approximately 60%, for example at least approximately 70%, preferably at least approximately 80%, crosslinked and/or cured.
  • An orientation of the battery cells relative to each other and/or relative to the casting mold is preferably fixed by the curing and/or crosslinking of the casting material.
  • the battery cells and the potting body are removed from the casting mold after the potting material has hardened and/or crosslinked; or b) the battery cells and the cast body remain in the casting mold after the casting material has hardened and/or crosslinked and form a composite component with it.
  • the casting mold is in particular removed from the battery module.
  • the casting mold is lined with a separating material, for example with a film material, before the casting material is introduced.
  • the casting mold is lined with a deep-drawn foil before the casting material is introduced, which remains on the battery module after the casting mold has been removed.
  • the separating material in particular the foil material, for example the deep-drawn foil, preferably forms part of the battery module.
  • the casting mold preferably forms part of the battery module.
  • the battery cells are positioned relative to a casting mold by means of the holding device prior to casting in such a way that the battery cells are spaced apart from a bottom of the casting mold.
  • the battery cells are positioned relative to the casting mold by means of the holding device before casting in such a way that a cell base of the battery cells and/or a cell base of the cell housing of the battery cells is at a distance from the base of the casting mold.
  • the casting mold is preferably formed by a trough, for example a metallic trough.
  • the trough comprises, for example, a base and/or a side wall that is closed in the form of a ring.
  • the bottom of the trough comprises, for example, a metallic material or is formed from this.
  • the trough comprises or be formed from a metallic material.
  • the holding device is struck directly or indirectly by means of a stop device in such a way that the holding device can be positioned in a predetermined position relative to the casting mold.
  • the stop device is preferably set in such a way that with a maximum length of the battery cells, in particular at an upper length tolerance range, a minimum distance of the battery cells from the bottom of the mold is maintained, in particular a minimum distance of a cell base of the battery cells and/or a cell base of the cell housing of the battery cells from the bottom of the mold.
  • a minimum distance of the battery cells from the bottom of the mold is maintained, in particular a minimum distance of a cell base of the battery cells and/or a cell base of the cell housing of the battery cells from the bottom of the mold.
  • the casting mold includes a stop on which the stop device can be struck.
  • the holding device is positioned relative to the casting mold by means of a positioning device.
  • the minimum distance of the battery cells from the bottom of the mold in particular the minimum distance of a cell foot of the battery cells and/or a cell bottom of the cell housing of the battery cells from the bottom of the mold, preferably corresponds to a minimum thickness of the potting material that is between the bottom of the mold and the Battery cells is arranged.
  • the minimum distance of the battery cells from the bottom of the mold is preferably at least approximately 0.3 mm, for example at least approximately 0.4 mm .
  • a maximum distance of the battery cells from the bottom of the mold is preferably at most approximately 1.5 mm, for example at most approximately 1.0 mm .
  • the maximum distance of the battery cells from the bottom of the mold in particular special the maximum distance of a cell foot of the battery cells and / or a
  • the cell floor of the cell housing of the battery cells from the bottom of the mold preferably corresponds to a maximum thickness of the potting material which is arranged between the bottom of the mold and the battery cells.
  • a thickness of the potting material, which is arranged between the bottom of the casting mold and the battery cells, is for example in a range from approximately 0.3 mm to approximately 1.5 mm, preferably in the range from approximately 0.4 mm to approximately 1.0 mm .
  • the battery cells are positioned using the holding device before they are cast in such a way that a minimum cell spacing between adjacent battery cells, in particular a minimum spacing between the cell casings of the cell housings of adjacent battery cells, is at least approximately 0.3 mm, preferably at least approximately 0.3 mm 0.7 mm, and/or at most about 2.0 mm, preferably at most about 1.3 mm.
  • a particularly high energy density of the battery module can preferably be achieved by such a minimum cell distance.
  • the minimum cell spacing between adjacent battery cells is preferably adapted to a capillary behavior of the potting material.
  • a minimum cell spacing between adjacent battery cells and/or a viscosity of the potting material are matched to one another in such a way that the potting material between the battery cells rises to the desired level before it hardens.
  • the potting material has a viscosity, in particular a mixed viscosity, of at most approximately 5000 mPas, preferably at most approximately 2000 mPas.
  • a closer arrangement of the battery cells and thus a higher energy density of a battery module can preferably be achieved by a small cell spacing.
  • forces acting on the battery module can preferably be transmitted from a cell housing of a battery cell to the cell housing of an adjacent battery cell.
  • the flexural rigidity of a battery module can preferably be increased by a factor of approximately 2 to approximately 10 compared to the prior art.
  • Natural resonance frequencies of a battery module are preferably also increased by a factor of approximately 2 to approximately 10 compared to the prior art.
  • the reliability and/or service life of bond connections and/or welded connections can be increased by means of which the battery cells of the battery module are electrically connected to one another.
  • the battery cells are electrically insulated from one another by means of the holding device, while the battery cells are held and/or gripped by means of the holding device; and/or b) the holding device is electrically insulated from the battery cells, while the battery cells are held and/or gripped by means of the holding device.
  • the holding device preferably comprises an electrical insulation device for electrically isolating the holding device from the battery cells.
  • the holding device and/or the electrical insulation device are preferably designed in such a way that the battery cells are electrically insulated from one another while the battery cells are held and/or gripped by means of the holding device.
  • the battery cells are encapsulated using the encapsulation material with one, preferably with several, for example two, assembly elements, which are preferably designed to fix a battery module to a housing of a battery device.
  • the battery cells are encapsulated in particular with the assembly elements when the battery cells and the encapsulation body are removed from the casting mold after the encapsulation material has been crosslinked and/or cured.
  • a battery module can be fixed to a housing of a battery device only by means of the mounting elements.
  • the mounting elements include a potting section, by means of which the mounting elements are potted with the potting material, and/or if the mounting elements include a mounting section, with which the mounting elements can be fixed to a housing of a battery device, for example to a mounting rail of the housing.
  • the cast section of an assembly element preferably comprises a plurality of undercut elements which are designed in such a way that the cast section of the assembly element and the cast body undercut one another after the battery cells have been cast.
  • the cast section of the mounting element and the cast body are preferably connected to one another in a form-fitting manner by means of the undercut elements.
  • a secure hold of the cast section in the cast body can preferably be made possible in this case.
  • undercut elements are passage openings in the cast section of the mounting element.
  • the mounting section of a mounting element preferably comprises one or more form-fitting elements which can be connected in a form-fitting manner, for example like a jigsaw puzzle, to a fastening rail of a housing of a battery device.
  • the mounting section of a mounting element comprises one or more fastening elements, which are designed, for example, as through-openings in the mounting section.
  • the mounting section of a mounting element can be screwed to a mounting rail of a housing of a battery device.
  • the mounting elements are, for example, profile elements, such as sheet metal angles.
  • the material thickness of the profile elements is at most approximately 2 mm.
  • the assembly elements are preferably fixed to the mold, for example by means of one or more hold-down devices.
  • the assembly elements it is possible for the assembly elements to be screwed to the casting mold in order to fix them to the casting mold.
  • a spacing of the mounting elements relative to the casting mold for example relative to a side wall of the casting mold and/or relative to a bottom of the casting mold, can preferably be fixed.
  • a mounting element includes or forms a temperature control device for temperature control of the battery cells.
  • a mounting element comprises a temperature control channel structure through which a temperature control medium can be conducted.
  • the casting material for casting the battery cells is introduced into a casting mold, with preferably a) first the casting material being introduced into the casting mold and then the battery cells being pressed into the casting material; or b) first the battery cells are at least partially arranged in the casting mold and then the casting material is introduced into the casting mold.
  • the battery cells are preferably pressed into the potting material or arranged in the casting mold in a direction running parallel to the longitudinal axes of the battery cells by means of the holding device.
  • the casting material is poured into the casting mold, preferably in liquid form.
  • the battery cells are preferably pressed into the casting material that is still liquid.
  • the potting material in liquid form is preferably poured into the mold so that it flows around the battery cells.
  • the casting material is subjected to a negative pressure after it has been introduced into the casting mold, in particular after the battery cells have been brought into contact with the casting material.
  • a vacuum is understood to mean, in particular, a pressure below the ambient pressure.
  • a vacuum is preferably applied to the potting material while the potting material is still liquid and/or flowable.
  • gas bubbles are preferably removed from the potting material.
  • a length of a battery cell is preferably a length taken parallel to the longitudinal axis of the battery cell.
  • a potting height of the potting material is preferably selected by considering the following optimization parameters:
  • a mechanical rigidity of the battery module can preferably be increased by increasing the encapsulation height.
  • Improved thermal coupling of the cell heads of the battery cells with the potting material means that heat can preferably be dissipated more effectively from the cell heads.
  • the present invention also relates to a battery module.
  • the present invention is based on the further object of providing a battery module which preferably has increased durability and can be produced easily and inexpensively.
  • this object is achieved by a battery module with the characterizing features of claim 17 .
  • the battery module is in particular a battery module which is produced according to the method according to the invention for producing a battery module.
  • the battery module preferably includes the following: a plurality of battery cells, which are preferably designed as round cells; a potting body made of a potting material, by means of which the battery cells are potted, with cell heads of the battery cells being arranged essentially in one plane.
  • the battery module according to the invention preferably has one or more of the features and/or advantages described in connection with the method according to the invention for producing a battery module.
  • the method according to the invention for producing a battery module preferably has one or more of the features and/or advantages described in connection with the battery module according to the invention.
  • the potting material and/or the potting body are preferably used to mechanically fix the battery cells and/or to electrically insulate the battery cells.
  • the potting material is designed to dissipate heat from the battery cells.
  • Battery cells of the battery module are preferably electrically connected to one another by means of a number of cell connectors, for example by means of a number of bonded connections and/or welded connections.
  • a battery module produced according to the invention is preferably designed to be rigid.
  • a high degree of flexural rigidity of the battery module can preferably increase the reliability of the bonded connections and/or welded connections.
  • the battery module comprises, for example, a trough in which the cast body is arranged and/or which covers the cast body on multiple sides, preferably on five sides.
  • the potting body is covered on several sides, preferably on five sides, by a foil material, for example by a thermoforming foil.
  • the cast body of the battery module is arranged in a casting mold and forms a composite component with the casting mold.
  • the potting body is positively connected to one or more, for example two, assembly elements.
  • a battery module can be fixed to a housing of a battery device only by means of the mounting elements.
  • the mounting elements include a casting section, by means of which the mounting elements are cast with the casting material, and/or if the mounting elements have a mounting section, by means of which the mounting elements can be fixed to a housing of a battery device, for example to a fastening rail of the housing.
  • the cast section of a mounting element is particularly embedded in the cast material of the cast body.
  • one mounting element is arranged parallel to a long secondary side of the battery module.
  • the cast section of an assembly element preferably comprises a plurality of undercut elements which are designed in such a way that the cast section of the assembly element and the cast body undercut one another after the battery cells have been cast.
  • the present invention also relates to a device for producing a battery module.
  • the present invention is based on the further object of providing a device for producing a battery module, by means of which a battery module, which preferably has increased durability, can be produced simply and inexpensively.
  • this object is achieved by a device for producing a battery module having the features of claim 20 .
  • the device according to the invention for producing a battery module is used in particular to carry out the method according to the invention for producing a battery module.
  • the device for producing a battery module preferably comprises the following: a holding device, which comprises one or more holding elements for holding and/or gripping one battery cell each, with a respective holding element being designed in such a way that a battery cell is held and/or gripped at a cell head thereof can be, for example magnetic, electromagnetic, pneumatic or mechanical.
  • the holding elements are magnetic holding elements or electromagnetic holding elements. If the holding elements are magnetic holding elements or electromagnetic holding elements, the potting material can preferably be subjected to a negative pressure, in particular without the battery cells falling off the holding elements of the holding device.
  • a surface of a holding element of the holding device which is brought into contact with the cell head of the battery cell and/or with a cell head cover of a cell housing of the battery cell when holding and/or gripping a battery cell, is essentially complementary to a Surface of the battery cell is formed on the cell head and / or a surface of the cell head cover of the cell housing of the battery cell.
  • the holding device is designed in such a way that the holding device switches between a switching state in which battery cells are held and/or gripped by means of a respective holding element and a release state in which battery cells are not held and/or gripped become switchable.
  • the holding device comprises electromagnetic holding elements, with a holding force of the electromagnetic holding elements being switchable.
  • the holding device comprises magnetic holding elements which comprise a switchable permanent magnet, for example a mechanically switchable permanent magnet or an electrically switchable permanent magnet.
  • the device comprises a testing device, by means of which a holding state of the one or more holding elements can be checked. If the holding device comprises electromagnetic holding elements, provision can be made, for example, for a change in a holding state of the one or more holding elements to be detectable by measuring a change in inductance using the testing device.
  • a change in inductance in particular a change in a gap between a battery cell, in particular between a cell head cover of the battery cell, and a respective holding element can be detected.
  • an alternating current component is preferably applied to the holding current of a respective electromagnetic holding element.
  • the holding current is formed, for example, by a first holding current component and by a superimposed second holding current component, with the second holding current component preferably being in the form of a periodic alternating current component.
  • the first holding current component is preferably used essentially to apply the holding force of a respective electromagnetic holding element.
  • the second holding current component is preferably used as a measurement or signal variable, with an inductance of a coil of the electromagnetic holding element changing as a result of a change in the air gap between a respective electromagnetic holding element and a battery cell.
  • the change in inductance changes, in particular, a phase shift between the AC component and the AC voltage component of the second holding current component.
  • the holding device comprises a guiding and/or aligning device, by means of which several battery cells can be positioned relative to one another, in particular substantially parallel to one another, and/or relative to the holding device.
  • the guiding and/or aligning device is in particular designed in such a way that battery cells are guided in the area of their cell heads, for example in an upper quarter of a cell housing of the battery cells.
  • An upper quarter of a cell housing of a battery cell is in particular an upper quarter of the cell housing in relation to a length of the battery cell in the region of the cell head of the battery cell.
  • the guiding and/or aligning device preferably comprises a plurality of guiding and/or aligning elements.
  • the battery cells are guided between a plurality of guiding and/or aligning elements or if the battery cells are guided within a guiding and/or aligning element.
  • the guide and/or alignment elements are designed as guide pins.
  • a guide and/or alignment element in particular a guide pin, is preferably arranged between each three battery cells.
  • a battery cell is preferably arranged between each three guide and/or alignment elements, in particular between each three guide pins.
  • the guide pins are preferably arranged parallel to one another.
  • a length of the guide pins is preferably designed in such a way that the battery cells protrude beyond the guide pins when they are held or gripped by the holding device.
  • the length of the guide pins is smaller than the length of the battery cells.
  • the guide and/or alignment elements are designed as a recess, for example as a circular-cylindrical recess, it being possible for one battery cell to be guided in each recess.
  • a depth of such a recess is preferably less than a length of the battery cells.
  • the holding device comprises a stop device, the holding device being able to be directly or indirectly attached to a casting mold by means of the stop device in such a way that the holding device can be positioned in a predetermined position relative to the casting mold; and/or b) the device comprises a positioning device, wherein the holding device can be positioned relative to a casting mold by means of the positioning device.
  • the stop device is preferably designed in such a way that the holding device can be positioned in a predetermined position relative to the mold by hitting the stop device on a mold. In order to position the holding device in a predetermined position relative to the casting mold, it can be provided that the stop device is placed against an edge of the casting mold.
  • the casting mold includes a stop on which the stop device can be struck.
  • the positioning device preferably includes a positioning drive.
  • the positioning device comprises a path measuring device.
  • the displacement measuring device it can preferably be determined whether the holding device has been brought into a predetermined position by means of the positioning drive of the positioning device.
  • the holding device comprises an electrical insulation device, by means of which battery cells can be electrically isolated from one another, while the battery cells are held and/or gripped by means of the holding device, and/or by means of which the holding device is electrically insulated from the battery cells can be isolated while the battery cells are held and/or gripped by means of the holding device.
  • the electrical insulation device includes an electrically insulating coating, which is applied, for example, to a respective holding element of the holding device.
  • a surface of a holding element of the holding device which is brought into contact with the cell head of the battery cell and/or with the cell head cover of the cell housing of the battery cell when holding and/or gripping a battery cell, has an electrically insulating coating.
  • the electrical insulation device comprises one or more electrical insulation films.
  • a surface of guiding and/or aligning elements of a guiding and/or aligning device of the holding device preferably has an electrically insulating coating.
  • the device according to the invention for producing a battery module preferably has one or more of the features and/or advantages described in connection with the method for producing a battery module according to the invention and the features and/or advantages described in connection with the battery module according to the invention.
  • the method according to the invention for producing a battery module and the battery module according to the invention preferably have one or more of the features and/or advantages described in connection with the device according to the invention for producing a battery module.
  • FIG. 1 shows a schematic section through a casting mold at the start of a method for producing a battery module
  • FIG. 2 shows a representation of a casting mold corresponding to the schematic section from FIG. 1 , with a casting material being introduced into the casting mold to produce a battery module;
  • FIG. 3 shows a representation corresponding to the schematic section from FIG. 1 , a plurality of battery cells being brought into contact with the casting material to produce a battery module and being held and/or gripped by means of a holding device;
  • FIGS. 1 to 3 shows a schematic sectional illustration of an embodiment of a battery module which has been produced by the method according to FIGS. 1 to 3;
  • FIG. 5 shows a schematic sectional illustration of a further embodiment of a battery module which has been produced by the method according to FIGS. 1 to 3;
  • FIG. 6 shows a schematic perspective illustration of a holding device of an embodiment of a device for producing a battery module
  • FIG. 7 shows a schematic side view of a holding element of the holding device of the embodiment of the device for producing a battery module from FIG. 6;
  • FIG. 8 shows a schematic perspective illustration of the holding device of the embodiment of the device for producing a battery module from FIG. 6, a plurality of battery cells being held and/or gripped by means of the holding device in a method for producing a battery module
  • FIG. 9 shows a perspective illustration of the holding device of the embodiment of the device for producing a battery module from FIG. 6 corresponding to the method step from FIG. 3;
  • FIG. 10 shows a schematic perspective illustration of a further embodiment of a battery module
  • FIG. 11 shows a schematic perspective illustration of a method step of a method for producing a battery module, battery cells being encapsulated using an encapsulation material with two assembly elements;
  • FIG. 12 shows a schematic perspective representation of a further embodiment of a mounting element.
  • FIG. 1 shows a schematic section through a casting mold, designated as a whole by 100, at the beginning of a method for producing a battery module that is still to be described.
  • the casting mold 100 is preferably formed by a trough 102, for example a metallic trough.
  • the trough 102 comprises, for example, a base 104 and/or a side wall 106 closed in the form of a ring.
  • the bottom 104 of the trough 102 comprises or is formed from a metallic material, for example.
  • a potting material 108 is preferably initially introduced into the casting mold 100, preferably in liquid form (cf. FIG. 2).
  • the potting material 108 comprises or is formed from a polyurethane material or an epoxy resin material, for example.
  • the potting material 108 is a one-component material, a two-component material or a multi-component material.
  • the potting material 108 is a two-component material with a hardener, in particular a crosslinking agent.
  • the casting material 108 is heat-curing and/or moisture-curing.
  • the potting material 108 preferably has a high thermal conductivity.
  • a thermal conductivity of the potting material 108 is preferably greater than approximately 0.5 W/m*K, for example greater than approximately 0.7 W/m*K.
  • a plurality of battery cells 110 are preferably held and/or gripped by means of a holding device 112, which is shown only schematically in FIG. 3 (cf. FIG. 3).
  • the holding device 112 is preferably a component of a device 113 for producing a battery module, which in addition to the holding device 112 can also comprise further components or parts.
  • the battery cells 110 are preferably circular-cylindrical battery cells 110, in particular circular-cylindrical round cells 114, with only individual battery cells 100 being provided with the reference sign for circular-cylindrical round cells 114 in the figures for reasons of clarity.
  • the battery cells 110 are preferably at least approximately rotationally symmetrical to a longitudinal axis 116 thereof.
  • the battery cells 110 preferably each comprise a cell head 118 and a cell base 120.
  • the cell head 118 and the cell base 120 of a respective battery cell 110 are preferably arranged at opposite ends of the battery cells 110 .
  • the battery cells 110 each comprise a cell housing 122 in which a cell coil, not shown in the drawing, is arranged.
  • the cell housing 122 of a battery cell 110 preferably comprises a cell head cover 124, a cell floor 126 and a cell casing 128.
  • the cell housing 122 of a battery cell 110 is preferably formed from a metallic material, for example steel.
  • the cell housing 122 of a respective battery cell 110 preferably has corrosion protection.
  • each of the battery cells 110 preferably includes two cell poles 130, which are arranged, for example, in the region of the cell head 118 of the battery cells 110 and are only indicated schematically by an arrow.
  • the battery cells 110 are preferably held and/or gripped by their cell heads 118 by means of the holding device 112 .
  • the battery cells 110 are held and/or gripped by the holding device 112 only on the cell head cover 124 of a respective cell housing 122 .
  • the battery cells 110 can be held and/or gripped by means of the holding device 112 at an upper end region 132 of their cell housing 122 .
  • the upper end area 132 of the cell housing 122 preferably comprises the cell head 118 of the battery cells 110 or borders on it.
  • the battery cells 110 are preferably held and/or gripped by the holding device 112 only on the cell head cover 124 and only on the upper end region 132 of the cell casing 128 of a respective cell housing 122, for example on at most approximately 25% of a surface of the cell casing 128 on the upper End portion 132 of the cell housing 122.
  • the battery cells 110 are held and/or gripped by the holding device 112, for example magnetically, electromagnetically, pneumatically or mechanically.
  • the battery cells 110 are preferably positioned by means of the holding device 112 in such a way that the cell heads 118 of the battery cells 110, in particular the cell head covers 124 of the cell housing 122, are arranged essentially in a positioning plane 134.
  • the battery cells 110 can have length tolerances in a direction running parallel to their longitudinal axes 116 . It is possible, for example, for the battery cells 110 to have length tolerances of approximately 0.5 mm in the direction running parallel to their longitudinal axes 116 .
  • an electrical connection of the battery cells 110 by means of cell connectors, in particular a bonding of the battery cells 110, can preferably be facilitated and/or accelerated.
  • a compensation of length tolerances of the battery cells 110 in the area of the cell heads 118 of the battery cells 110 can be achieved, so that a length tolerance of the battery cells 110 preferably only has an effect in the area of the cell bases 120 of the battery cells 110 .
  • a deviation of the cell heads 118 of the battery cells 110 and/or the cell head cover 124 of the cell housing 122 of the battery cells 110 from the positioning plane 134 is preferably at most approximately 0.2 mm, in particular at most approximately 0.1 mm.
  • the potting material 108 is first introduced into the casting mold 100, the battery cells 110 preferably then being pressed into the potting material 108 and being potted with the potting material 108 in the process.
  • the battery cells 110 are preferably pressed into the potting material 108, which is still liquid.
  • the battery cells 110 are at least partially arranged in the casting mold 100 and then the casting material 108 is introduced into the casting mold 100, the battery cells 110 being cast with the casting material 108 in the process.
  • the casting material 108 is preferably poured into the casting mold 100 in liquid form, so that it flows around the battery cells 110 .
  • the battery cells 110 are preferably pressed into the potting material 108 or arranged in the casting mold 100 by means of the holding device 112 in a direction running parallel to the longitudinal axes 116 of the battery cells 110 .
  • the battery cells 110 are preferably positioned relative to the mold 100 by means of the holding device 112 in such a way that the battery cells 110 are spaced apart from the bottom 104 of the mold 100 .
  • Battery cells 110 are positioned by means of holding device 112 in particular relative to casting mold 100 in such a way that cell base 120 of battery cells 110 and/or cell base 126 of cell housing 122 of battery cells 110 is at a distance 135 from base 104 of casting mold 100.
  • a minimum cell spacing 137 of adjacent battery cells 110 is at least approximately 0.3 mm. preferably at least about 0.7 mm, and/or at most about 2.0 mm, preferably at most about 1.3 mm.
  • a particularly high energy density of the battery module 140 can preferably be achieved by such a minimum cell spacing 137 .
  • the minimum cell spacing 137 between adjacent battery cells 110 is preferably adapted to a capillary behavior of the potting material 108 .
  • a minimum cell spacing 137 between adjacent battery cells 110 and/or a viscosity of the Casting material 108 are matched to one another in such a way that the casting material 108 between the battery cells 110 rises to the desired height before it hardens.
  • the potting material 108 has a viscosity, in particular a mixture viscosity, of at most approximately 5000 mPas, preferably at most approximately 2000 mPas.
  • the battery cells 110 when they are cast, are at least approximately 10%, preferably at least approximately 25%, and/or at most approximately 90%, preferably at most approximately 75%, based on their length 136 in the casting material 108 be introduced.
  • the length 136 of a respective battery cell 110 is preferably a length taken parallel to the longitudinal axis 116 of the respective battery cell 110 .
  • the encapsulation material 108 preferably hardens and/or crosslinks after the encapsulation and a encapsulation body 138 is formed by curing and/or crosslinking of the encapsulation material 108 .
  • An alignment of the battery cells 110 relative to one another and/or relative to the casting mold 100 is preferably fixed by the curing and/or crosslinking of the casting material 108 .
  • the battery cells 110 are preferably held by the holding device 112 until the potting material 108 is crosslinked in such a way that a position of the battery cells 110 relative to one another and/or relative to the casting mold 100 is fixed.
  • the battery cells 110 by means of the holding device 112 at least approximately 5 minutes, for example at least about 10 minutes, while the potting material 108 cures and/or cures.
  • Battery cells 110 are held by holding device 112, for example, until at least approximately 60%, for example at least approximately 70%, preferably at least approximately 80%, of potting material 108 is crosslinked and/or cured.
  • the battery cells 110 and the encapsulation body 138 are removed from the casting mold 100 after the encapsulation material 108 has hardened and/or crosslinked.
  • the battery cells 110 and the potting body 138 are part of a battery module 140, which is shown in FIG.
  • the casting mold 100 is lined with a separating material 142 before the potting material 108 is introduced, for example with a foil material 144.
  • the separating material 142 and the foil material 144 are indicated only schematically in FIGS. 1 to 4 by means of an arrow.
  • the separating material 142 in particular the foil material 144, for example the thermoforming foil, preferably forms part of the battery module 140.
  • the potting body 138 is in particular covered on several sides, preferably on five sides, by the foil material 144, for example by a thermoforming foil.
  • the battery cells 110 and the encapsulation body 138 are not removed from the casting mold 100 and remain in the casting mold 100 after the encapsulation material 108 has hardened and/or crosslinked and form a composite component 145 with it (see Fig. 5 ).
  • the casting mold 100 preferably forms part of the battery module 140.
  • the potting material 108 and/or the potting body 138 are preferably used to mechanically fix the battery cells 110 in place and/or to electrically insulate the battery cells 110.
  • the potting material 108 is preferably also designed to dissipate heat from the battery cells 110 .
  • the battery cells 110 of the battery module 140 are preferably electrically connected to one another by means of cell connectors that are not shown in the drawing, for example by means of a plurality of bonded connections and/or welded connections.
  • the battery module 140 is preferably designed to be rigid, with a high level of rigidity of the battery module 140 preferably making it possible to achieve increased reliability of the bonded connections and/or welded connections.
  • the encapsulation height of the encapsulation material 108 is therefore preferably selected taking into account the following optimization parameters:
  • a mechanical rigidity of the battery module 140 can preferably be increased by increasing the encapsulation height.
  • Improved thermal coupling of the cell heads 118 of the battery cells 110 to the potting material 108 can preferably dissipate heat from the cell heads 118 more effectively.
  • a flexural rigidity of the battery module 140 can preferably be increased by a factor of approximately 2 to approximately 10 compared to the prior art.
  • Natural resonance frequencies of the battery module 140 are preferably increased by a factor of approximately 2 to approximately 10 compared to the prior art.
  • the reliability and/or service life of bond connections and/or welded connections can be increased by means of which the battery cells 110 of the battery module 140 are electrically connected to one another.
  • 6 to 10 show an embodiment of a holding device 112 which can be used to produce an embodiment of a battery module 140, the method being analogous to FIGS. 1 to 5 Runaway leads can be.
  • the holding device 112 preferably comprises a plurality of holding elements 146, only individual holding elements 146 being identified by a reference number in the figures for reasons of clarity.
  • a respective holding element 146 is preferably designed in such a way that a battery cell 110 can be held and/or gripped on the cell head cover 124 of the cell housing 122 of the battery cell 110 .
  • Such a holding element 146 is shown in FIG. 7, for example.
  • a respective holding element 146 comprises, for example, a holding and/or gripping section 148, which is designed in such a way that a battery cell 110 can be held and/or gripped with it.
  • a holding element 146 shown in FIG. 7 preferably also includes a fastening section 150 by means of which the holding element 146 is fixed to a base body 152 of the holding device 112 .
  • a respective gripping section 148 preferably comprises a surface 154 which, when holding and/or gripping a battery cell 110, is brought into contact with the battery cell 110, in particular with the cell head 118 of the battery cell 110 and/or with the cell head cover 124 of the cell housing 11 of the battery cell 110
  • the surface 154 which is brought into contact with the cell head 118 of the battery cell 110 and/or with the cell head cover 124 of the cell housing 122 of the battery cell 110 when holding and/or gripping a battery cell 110, is preferably essentially complementary to a surface 156 the battery cell 110 on the cell head 118 of the cell head cover 124 of the cell housing 122 of the battery cell 110 is formed.
  • the holding elements 146 are preferably magnetic holding elements 158 or electromagnetic holding elements 160.
  • the potting material 108 can preferably be subjected to a vacuum, in particular without the battery cells 110 falling off the holding elements 146 of the holding device 112 .
  • Gas bubbles can preferably be removed from the potting material 108 by subjecting it to a vacuum.
  • holding device 112 is configured in such a way that holding device 112 can switch between a switching state, in which battery cells 110 are held and/or gripped by means of a respective holding element 146, and a release state, in which battery cells 110 are not held and/or be taken, is switchable.
  • the holding device 112 comprises electromagnetic holding elements 160, with a holding force of the electromagnetic holding elements 160 being switchable.
  • the holding device 112 comprises magnetic holding elements 158 which comprise a switchable permanent magnet, for example a mechanically switchable permanent magnet or an electrically switchable permanent magnet.
  • the device 113 for producing a battery module 140 preferably includes a testing device 162, by means of which a holding state of the holding elements 146 can be checked.
  • the testing device 162 is shown in FIGS. 6, 8 and 9 only schematically.
  • the holding device 112 comprises electromagnetic holding elements 160, it can be provided, for example, that a change in a holding state of the holding elements 146 can be detected by measuring a change in inductance using the testing device 162.
  • a change in a gap between a battery cell 110, in particular between a cell head cover 124 of the battery cell 110, and a respective holding element 146 can be detected by measuring a change in inductance.
  • An alternating current component is preferably applied to the holding current of a respective electromagnetic holding element 160 in order to detect a change in inductance.
  • the holding current is formed, for example, by a first holding current component and by a superimposed second holding current component, with the second holding current component preferably being in the form of a periodic alternating current component.
  • the first holding current component is preferably used essentially to apply the holding force of a respective electromagnetic holding element 160.
  • the second holding current component is preferably used as a measurement or signal variable, with a change in the air gap between a respective electromagnetic holding element 160 and a battery cell 110 changes an inductance of a coil of the electromagnetic holding element 160 .
  • the change in inductance changes, in particular, a phase shift between the AC component and the AC voltage component of the second holding current component.
  • This phase shift can preferably be detected and used to check a holding state of a respective holding element 146 .
  • holding device 112 includes a guiding and/or aligning device 164, by means of which a plurality of battery cells 110 can be positioned relative to one another, in particular substantially parallel to one another, and/or relative to holding device 112.
  • the battery cells 112 are preferably positioned relative to one another, in particular essentially parallel to one another, and/or relative to the holding device 112 by means of the holding device 112 .
  • the battery cells 110 are preferably positioned relative to one another by means of the holding device 112 in such a way that the longitudinal axes 116 of the battery cells 110 are arranged essentially parallel to one another.
  • the battery cells 110 In order to position the battery cells 110 , they are preferably guided in the holding device 112 in a direction running parallel to the longitudinal axes 116 of the battery cells 100 .
  • the battery cells 110 are arranged parallel to one another, for example, in such a way that the battery cells 110 are arranged as densely as possible. It can be favorable, for example, if the battery cells 110 are arranged with a packing density in the range from approximately 60% to approximately 90%, for example with a packing density in the range from approximately 70% to approximately 80%.
  • the guiding and/or aligning device 164 is in particular designed in such a way that the battery cells 110 are guided in the region of their cell heads 124, for example in an upper quarter of the cell housing 122 of the battery cells.
  • An upper quarter of the cell housing 122 of a battery cell 110 is in particular an upper quarter of the cell housing 122 in relation to the length 136 of the battery cell 110 in the region of the cell head 118 of the battery cell 110.
  • the guiding and/or aligning device 164 comprises a plurality of guiding and/or aligning elements 166.
  • the guiding and/or alignment elements 166 are preferably arranged in a regular pattern on the holding device 112 .
  • the guiding and/or aligning elements 166 are in the form of guiding pins 168 which are preferably arranged parallel to one another.
  • the battery cells 110 are preferably guided between a plurality of guide and/or alignment elements 166, in particular between a plurality of guide pins 168. Provision can preferably be made for a guide and/or alignment element 166, in particular a guide pin 168, to be arranged between three battery cells 110 in each case.
  • One battery cell 110 is preferably arranged between each three guide and/or alignment elements 166, in particular between each three guide pins 168.
  • a length 170 of the guide pins 168 is preferably formed in such a way that the battery cells 110 protrude beyond the guide pins 168 when they are held or gripped by the holding device 112 .
  • the guide pins 168 have a length 170 which is less than the length 136 of the battery cells 110.
  • the battery cells 110 are guided within a guiding and/or aligning element 166 .
  • the guiding and/or aligning elements 166 are designed, for example, as a recess, preferably as a circular-cylindrical recess, it being possible for one battery cell 110 to be guided in each recess.
  • a depth of such a recess is preferably less than the length 136 of the battery cells 110.
  • Holding device 112 preferably also includes an electrical insulation device 172 for electrically insulating holding device 112 from battery cells 110.
  • the electrical insulation device 172 is preferably also formed in such a way that the battery cells 110 are electrically insulated from one another, while the battery cells 110 are held and/or gripped by the holding device 112 .
  • the electrical insulation device 172 is indicated only schematically in FIGS. 6, 8 and 9 by means of an arrow.
  • an electrically insulating coating 174 has.
  • a surface of the guiding and/or aligning elements 166 of the guiding and/or aligning device 164 of the holding device 122 preferably has an electrically insulating coating 174 .
  • the electrical insulation device 172 comprises one or more electrical insulation films 176 .
  • the holding device 112 comprises a stop device 178, wherein the holding device 112 can be directly or indirectly attached to the casting mold 100 by means of the stop device 178 in such a way that the holding device 112 can be positioned in a predetermined position relative to the casting mold 100.
  • the stop device 178 is preferably designed in such a way that the holding device 112 can be positioned in a predetermined position relative to the casting mold 100 by striking the stop device 178 on the casting mold 100 . In order to position the holding device 112 in a predetermined position relative to the casting mold 100, it can be provided that the stop device 178 is placed against an edge of the casting mold 100.
  • the casting mold 100 includes a stop, not shown in the drawing, against which the stop device 178 can be struck.
  • the device 113 for producing a battery module 140 also includes, for example, a positioning device 180, which is shown only schematically in FIGS.
  • the holding device 112 can preferably be positioned relative to the mold 100 by means of the positioning device 180 .
  • Positioning device 180 preferably includes a positioning drive 182.
  • the positioning device 180 includes a displacement measuring device 184 .
  • the position measuring device 184 can preferably be used to determine whether the holding device 112 has been brought into a predetermined position by means of the positioning drive 182 of the positioning device 180 .
  • the stop device 178 is preferably adjusted in such a way that at a maximum length 136 of the battery cells 110, in particular at an upper length tolerance range, a minimum distance 135a of the battery cells 110 from the bottom 104 of the mold 100 is maintained, in particular a minimum distance 135a of the cell base 120 of the battery cells 110 and/or the cell floor 126 of the cell housing 122 of the battery cells 110 from the floor 104 of the casting mold 100.
  • a predetermined distance 135 between battery cells 110 and base 104 of casting mold 100 holding device 112 is placed against an edge of casting mold 100, for example, in particular by means of stop device 178.
  • the minimum distance 135a of the battery cells 110 from the base 104 of the mold 100 in particular the minimum distance 135a of a cell base 120 of the battery cells 110 and/or a cell base 126 of the cell housing 122 of the battery cells 110 from the base 104 of the mold 100, preferably corresponds to a minimum Thickness 186 of the potting material 108, which is arranged between the bottom 104 of the mold 100 and the battery cells 110 (see. Fig. 3 to 5).
  • the minimum distance 135a of the battery cells 110 from the base 104 of the mold 100 is preferably at least approximately 0.3 mm, for example at least about 0.4 mm.
  • a maximum distance 135b of the battery cells 110 from the base 104 of the mold 100 is preferably approximately at most 1.5 mm, for example at most about 1.0 mm.
  • the maximum distance 135b of the battery cells 110 from the bottom 104 of the mold 100 in particular the maximum distance 135b of a cell base 120 of the battery cells 110 and/or a cell base 126 of the cell housing 122 of the Battery cells 110 from the bottom 104 of the mold 100 preferably corresponds to a maximum thickness 188 of the potting material 108 which is arranged between the bottom 104 of the mold 100 and the battery cells 100 .
  • a thickness of the potting material 108, which is arranged between the bottom 104 of the mold 100 and the battery cells 110, is therefore preferably in a range from approximately 0.3 mm to approximately 1.5 mm, preferably in a range from approximately 0. 4 mm to about 1.0 mm.
  • the holding elements 146 are magnetic holding elements 158 or electromagnetic holding elements 160, it can be provided that the casting material 108 is subjected to a negative pressure after it has been introduced into the casting mold 100, in particular after the battery cells 110 have been brought into contact with the casting material 108 .
  • the device 113 for producing a battery module 140 preferably also includes a vacuum device 190, which is designed in particular in such a way that the potting material 108 can be subjected to a vacuum.
  • the vacuum device 190 is indicated only schematically in FIGS.
  • a vacuum is preferably applied to the potting material 108 by means of the vacuum device 190 while the potting material 108 is still liquid and/or flowable.
  • Gas bubbles are preferably removed from the casting material 108 by subjecting the casting material 108 to a negative pressure.
  • FIG. 10 shows a method step of a method for producing a battery module 140 , battery cells 110 being encapsulated with two assembly elements 192 using the encapsulation material 108 .
  • the assembly elements 192 are arranged parallel to a long secondary side of the battery module 140 .
  • the mounting elements 192 are preferably designed to fix the battery module 140 to a housing of a battery device, not shown in the drawing.
  • the battery cells 110 are encapsulated with the assembly elements 192 in particular in one embodiment of a battery module 140 in which the battery cells 110 and the encapsulation body 138 are removed from the casting mold 100 after the encapsulation material 108 has been crosslinked and/or cured.
  • the battery module 140 can be fixed to a housing of a battery device only by means of the mounting elements 192 .
  • casting body 138 is connected to the mounting elements 192 in a form-fitting manner.
  • the mounting elements 192 preferably include a casting section 194, by means of which the mounting elements 192 are cast with the casting material 108.
  • the mounting elements 192 preferably also include a mounting section 196, by means of which the mounting elements 192 can be fixed to a housing of a battery device, for example to a mounting rail of the housing.
  • the encapsulation section 194 of the mounting elements 192 is in particular embedded in the encapsulation material 108 of the encapsulation body 138 .
  • the cast portion 194 of the assembly elements 192 preferably includes a plurality of undercut elements 198 which are formed in such a way that the cast portion 194 of the respective assembly element 192 and the cast body 138 undercut one another after the battery cells 110 have been cast.
  • the cast section 194 of one of the mounting elements 192 and the cast body 138 are preferably connected to one another in a form-fitting manner by means of the undercut elements 198 .
  • a secure hold of the encapsulation section 194 in the encapsulation body 138 can preferably be made possible in this case.
  • undercut elements 198 are passage openings in the cast section 194 of the assembly elements 192 .
  • the mounting section 196 of the mounting elements 192 preferably includes a plurality of positive-locking elements 200 which can be positively connected, for example in the manner of a puzzle, to a fastening rail of a housing of a battery device.
  • the assembly section 196 of the assembly elements 192 each comprise a plurality of fastening elements, which are not shown in the drawing and which are designed, for example, as passage openings in the assembly section 196 .
  • the mounting section 196 of a mounting element 192 is attached by means of the fastening elements designed as passage openings a mounting rail of a housing of a battery device screwed ver.
  • the mounting elements 192 are, for example, profile elements 202, for example sheet metal angles 204.
  • a material thickness 206 of the profile elements 202, in particular the sheet metal angle 204 is at most approximately 2 mm.
  • the mounting elements 192 are preferably fixed to the casting mold 100, for example by means of one or more hold-down devices (not shown in the drawing).
  • the assembly elements 192 may be screwed to the casting mold 100 in order to fix them to the casting mold 100 .
  • a spacing of the mounting elements 192 relative to the casting mold 100 for example relative to the side wall 106 of the casting mold 100 and/or relative to the bottom 104 of the casting mold, can be fixed.
  • Precisely fitting installation of the battery module 140 can preferably be made possible in this way.
  • the mounting elements 192 include or form a temperature control device, not shown in the drawing, for temperature control of the battery cells 110 .
  • the assembly elements 192 include a temperature control channel structure through which a temperature control medium can be conducted.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Afin de fournir un procédé de fabrication d'un module de batterie qui permet la production simple et économique d'un module de batterie qui présente de préférence une durée de vie prolongée, il est proposé selon l'invention que le procédé comprend les étapes suivantes : L'invention concerne également une pluralité d'éléments de batterie qui se présentent de préférence sous la forme d'éléments ronds ; - encapsulation des éléments de batterie avec un matériau d'encapsulation, le matériau d'encapsulation durcissant et/ou réticulant de préférence après encapsulation, et durcissement et/ou réticulation du matériau d'encapsulation formant un corps encapsulé.
EP22720995.4A 2021-04-09 2022-04-05 Procédé de fabrication de module de batterie, module de batterie et appareil de fabrication de module de batterie Pending EP4320679A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021203549.3A DE102021203549A1 (de) 2021-04-09 2021-04-09 Verfahren zum Herstellen eines Batteriemoduls, Batteriemodul und Vorrichtung zum Herstellen eines Batteriemoduls
PCT/EP2022/059037 WO2022214503A1 (fr) 2021-04-09 2022-04-05 Procédé de fabrication de module de batterie, module de batterie et appareil de fabrication de module de batterie

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EP4320679A1 true EP4320679A1 (fr) 2024-02-14

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Publication number Priority date Publication date Assignee Title
US8519715B2 (en) 2010-11-29 2013-08-27 Volkswagen Ag Method and system for assembling a battery module
DE102015206182A1 (de) * 2014-05-06 2015-11-12 Robert Bosch Gmbh Isolieren von aneinanderliegenden Lithium-Ionen-Akkumulatoren durch komplettes Umspritzen/Ausgießen der Behälter in einer Vorrichtung
DE102014211032A1 (de) 2014-06-10 2015-12-17 Robert Bosch Gmbh Deckel mit vergossenen Lithium-Zellpads
DE102015219280A1 (de) 2015-10-06 2017-04-06 Robert Bosch Gmbh Batteriesystem mit Vergussmasse
JP2019032924A (ja) * 2015-12-24 2019-02-28 三洋電機株式会社 電池パックと電池パックの製造方法
DE102016214640A1 (de) * 2016-08-08 2018-02-08 Audi Ag Batteriemodul für eine Batterie eines Kraftfahrzeugs und Kraftfahrzeug
KR102317265B1 (ko) 2018-11-02 2021-10-22 주식회사 엘지에너지솔루션 로봇 아암을 포함하는 로봇
EP4005010A1 (fr) 2019-07-26 2022-06-01 ElringKlinger AG Dispositifs de batterie et procédé de fixation d'éléments de batterie

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